Page 1 Technical Publications Direction 46-018000 Revision 24 GE Medical Systems General Service Manual CT-9800 Quick System Copyright 1999 by General Electric Company Operating Documentation...
Page 3 WIRD DIESE WARNUNG NICHT BEACHTET, SO KANN ES ZU ALL’ADDETTO ALLA MANUTENZIONE, ALL’UTILIZZATORE ED AL VERLETZUNGEN DES KUNDENDIENSTTECHNIKERS, DES PAZIENTE PER FOLGORAZIONE ELETTRICA, PER URTI MECCANICI BEDIENERS ODER DES PATIENTEN DURCH ELEKTRISCHE OD ALTRI RISCHI. SCHLÄGE, MECHANISCHE ODER SONSTIGE GEFAHREN KOMMEN.
Page 4 STATEMENT All electrical installations that are preliminary to positioning of In performing all electrical work on these products, GE will the equipment at the site prepared for the equipment shall be use its own specially trained field engineers. All of GE’s performed by licensed electrical contractors.
Page 5 GENERAL ELECTRIC MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Rev. 24 Direction 46-018000 CT9800 QUICK SYSTEM CHAPTERS 4-8 REVISION HISTORY DATE REASON FOR CHANGE DATE REASON FOR CHANGE Feb. 21, 1986 Initial Production Release (SA Sept. 1, 1988 WA Software Release HTD Sftw) and HiLight Updates June 20, 1986...
Page 6 CT 9800 Q ENERAL LECTRIC EDICAL YSTEMS UICK YSTEM 46-018000 IRECTION List of Effective Pages PAGE REVISION PAGE REVISION PAGE REVISION NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER Title/Blank 4-4 to 4-8 omitted 4-12-25 to 4-12-28 deleted A to B 4-9-1 to 4-9-4 4-12-29 to 4-12-32 0-1 to 0-4 4-9-5 &...
Page 7 CT 9800 Q ENERAL LECTRIC EDICAL YSTEMS UICK YSTEM 46-018000 IRECTION PAGE REVISION PAGE REVISION PAGE REVISION NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER 6-9A-11 7-2-14 8-1-3 to 8-1-12 6-9A-12 7-2-14A & 7-2-14B 8-2-1 6-9A-13 7-2-15 8-2-2 to 8-2-4 6-9A-14 7-2-16 & 7-2-17 8-3-1 6-9A-14A to 14D 7-2-18 to 7-2-20...
Page 8 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM MANUAL Direction 18000 Rev. 24 THIS PAGE LEFT BLANK INTENTIONALLY...
Page 9 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM MANUAL Direction 18000 Rev. 1 TABLE OF CONTENTS CHAPTER TITLE HOW TO USE THE CT 9800 QUICK SYSTEM MANUAL FUNCTIONAL CHECKS THEORY CALIBRATION SCHEMATICS DIAGNOSTICS...
Page 10 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM MANUAL Direction 18000 Rev. 1 THIS PAGE LEFT BLANK INTENTIONALLY...
Page 11 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM MANUAL Direction 18000 Rev. 1 HOW TO USE THE 9800 MANUALS The CT9800 service manual set has been designed to aid in rapidly locating service information. The following pages describe the overall manual structure and where information regarding installation, tests, jumper settings, calibration, etc.
Page 12 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM MANUAL Direction 18000 Rev. 1 These System manual chapters (separate binders), are structured as stand alone documents, each having a specific purpose but include all system options etc. The purpose of each manual is as follows:...
Page 13 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM MANUAL Direction 18000 Rev. 1 The following chapters of the CT9800 Quick System Service manual are contained within the same binder. Direction 18000 Procedural guideline of how to test each function within FUNCTIONAL...
Page 14 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM MANUAL Direction 18000 Rev. 1 There are seven CT9800 Quick subsystem service manuals at this time. They are: • Direction18005 Table/Gantry Includes the TGGC (table/gantry/generator controller, table, and gantry. • Direction18006 X-Ray Includes A2 and A3 TGGC I/O boards, MPX, and tube.
Page 15 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM MANUAL Direction 18000 Rev. 1 FIELD FIELD FIELD FIELD FIELD CHAPTER 3 Procedural guide to removing covers and removal/- REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT REPLACEMENT placement of renewal part items. CHAPTER 4 Procedure for ensuring a subsystem is operational after FUNCTIONAL installation, repair, or during Periodic Maintenance.
Page 16 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM MANUAL Direction 18000 Rev. 1 THIS PAGE INTENTIONALLY LEFT BLANK i-A-6...
Page 17: Table Of Contents
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM rection 18000 Rev. 12 CHAPTER 4 FUNCTIONAL CHECK TABLE OF CONTENTS SECTION TITLE PAGE INTRODUCTION ......................4-1-1 Post-Installation....................4-1-1 System and Option Component Identification ............4-1-2 H.H.S. Certification; Field Tests; and Record Forms ..........4-1-2 ENVIRONMENTAL .......................4-2-1 Temperature ......................4-2-1...
Page 18: Section Title Page
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM rection 18000 Rev. 19 TABLE OF CONTENTS (Continued) SECTION TITLE PAGE X-RAY (Refer to Direction 18006 X-ray Chapter 4) DETECTOR/DAS/RDCP (Refer to Direction 18008 RDCS Chapter 4) SYSTEM INTEGRATION ....................4-9-1 X-ray Alignment Check (Refer to Chapter 8 of Direction 18000)......4-9-1 Laser Alignment Check ..................4-9-1...
Page 19: Introduction
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 SECTION 1 INTRODUCTION The 9800 Functional Check procedure is intended for the following purposes: 1. A thorough post-installation check to ensure the entire 9800 system is operating properly. 2. A procedural reference from Chapter 10 Periodic Maintenance that contains an abbreviated list of PM steps.
Page 20: System And Option Component Identification
CT system. Table 4-1-4 lists H.H.S. Field Tests for the CT-9800 and CT-9600. Use this table as a reference to locate the specific test procedure in the CT Service Documentation. Note that some tests are not applicable to systems which were manufactured before September, 1985;...
Page 21 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 NOTES TO TABLE 4-1-1 Gantry complete assembly serialized and H.H.S. certified after August, 1985 CODES FOR TYPE OF X-RAY CERTIFIED COMPONENT CT system model and serial number for systems manufactured after August 1985 and reported Beam Limiting Device in item 4e under ‘Beam Limiting Device’...
Page 22 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 TABLE 4-1-1 Sheet 2 COMPONENT NAMAEPLATES WITH MODEL #, SERIAL #, AND H.H.S. CERTIFICATION FOR CT 9800 SYSTEMS NOTES TO TABLE 4-1-1 Gantry complete assembly serialized and H.H.S. certified after August, 1985 CT system model and serial number for systems manufactured after August 1985 and reported in item 4e under ‘Beam Limiting Device’...
Page 23 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 10 TABLE 4-1-1 SHEET3 COMPONENT NAMEPLATES WITH MODEL #, SERIAL #, AND H.H.S CERTIFICATION FOR CT9800 SYSTEMS NOTES TO TABLE 4-1-1 Gantry complete assembly serialized and H.H.S. certified after August, 1985...
Page 24 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 10 TABLE 4-1-1 Sheet 4 COMPONENT NAMAEPLATES WITH MODEL #, SERIAL #, AND H.H.S. CERTIFICATION FOR CT 9800 SYSTEMS NOTES TO TABLE 4-1-1 Gantry complete assembly serialized and H.H.S. certified after August, 1985...
Page 25 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 10 THIS PAGE IS LEFT BLANK INTENTIONALLY. 4-1-5B...
Page 26 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 4 TABLE 4-1-2 Sheet 1 CT-9800 SYSTEM OPTIONS COMPONENT NAMAEPLATES WITH MODEL #, SERIAL #, AND H.H.S. CERTIFICATION 4-1-6...
Page 27 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 13 TABLE 4-1-2 Sheet 2 CT-9800 SYSTEM OPTIONS COMPONENT NAMAEPLATES WITH MODEL #, SERIAL #, AND H.H.S. CERTIFICATION 4-1-7...
Page 28 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 4 TABLE 4-1-3 MODIFICATION NAMEPLATES ADDED TO CT-9800 SYSTEM OR OPTION COMPONENTS 4-1-8...
Page 29 Not Applicable SM 9800B; Ch 4; Dir 18000; Ch 4; Sec 12-11* Sec 12-11 TABLE 4-1-4 H.H.S. FIELD TESTS FOR CT-9800 SYSTEMS *Refer to CT 9600 SUPPLEMENT, Direction 17079, for modified test procedure. ** Test requirement discontinued November, 1986 4-1-9...
Page 30 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 4 THIS PAGE LEFT INTENTIONALLY BLANK 4-1-10...
Page 31: Environmental
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 SECTION 2 ENVIRONMENTAL This section assumes all wiring and cabling is complete, and that equipment is installed and circuit breakers OFF, power input plugs and fuses removed according to the following: CAUTION: All power to the system Must be OFF and tagged until power is called for in a specific step.
Page 32 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3. Check that all electronic equipment dust filters are cleaned. It is recommended that this be done on a weekly basis initially due to excessive dust and dirt present at that stage. Over a period of time, the maintenance interval may be increased depending on site environment.
Page 33: Power Line Checks
Rev. 1 7. From the data collected, ensure the following temperature and humidity specifications are met. Should any specifications not be met, the air conditioning supplier or your local GE service dept. should be contacted. Temperature and Humidity Specifications a. Inlet air to computing subsystems Main &...
Page 34: Ground Continuity Check
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3. The Recommended Line Analyzer is the Dranitz Model 606-3 (3 channel) with the 101 frequency option or Dranitz Model 626 with PA 6003, 3-phase AC monitor and the PA 6006 neutral line monitor plug in modules.
Page 35 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3. Using a Microguard or equivalent device, measure the DC resistance between the following components in the system and verify the specifications given. Ground Specifications Max DC resistance of 0.01 ohm between:...
Page 36: System Power And Load Distribution
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 2-4 - System Power and Load Distribution Before attempting this power application and functional check, ensure that the breakers, fuses, and plug configuration is as indicated at the beginning of this Section 2.
Page 37 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 Switch OFF A1 Main Breaker. 12. Insert into the PDU the following fuses: A3 - F10, F11, F12, F13, F14, F15 A1 - F1, F2, F3, F5, F6 A4 - F2 13.
Page 38 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 25. At the REM panel, press the electronic circuits ON. Verify that the ON indicator/switch illuminates and that the X-Ray off switch illuminates. 26. At the PDU A3 panel, verify that the following relays are energized:...
Page 39 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 37. At the rear of the Gantry on TS14 terminal strip between connections 3, 4, measure and note the voltage. Ensure it is 120 ± 9.6 Volts. Verify connection 4 is neutral line.
Page 40 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 TABLE 4-2-2 MEASURED UNIT SIGNAL TERMINALS METER TOLER- SUBASSEMBLY/ NAME RANGE READING ANCE ACTION TERMINATION FROM ∅A A2TS1 AC 2000 V 219-277 ∅B AC 2000 V 219-277 ∅C AC 2000 V 219-277 ∅A - B...
Page 41 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 TABLE 4-2-2 Continued MEASURED UNIT SIGNAL TERMINALS METER TOLER- SUBASSEMBLY/ NAME RANGE READING ANCE ACTION TERMINATION FROM 120 ± 9.6 T1∅A AC200 V 120 ± 9.6 T1∅B AC200 V 120 ±...
Page 42: X-Ray Line Transformer And Jumper Settings
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 2-5 X-Ray Line Transformer and Jumper Settings Before changing taps or jumpers, insure power is isolated from the MPX pwr unit main input, L1E, L2E, L3E. Line Input Conditions Monitor during the workday the No Load Line to Line Voltage.
Page 43: Power Interlocks
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 2-6 Power Interlocks Computer Thermostat With the PDU fully powered, all breakers ON. At the REM, press the electronic circuit ON switch. Press the X- Ray drive ON switch. Verify both ON indicator switches are illuminated.
Page 44 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 THIS PAGE LEFT BLANK INTENTIONALLY 4-2-14...
Page 45: Data Processing
Plug in the following devices: CC1 to W1 CC2 to W7 OC to W6 DC to W12 Zebra Disk (if present) to W2 2nd Zebra Disk (if present) to W10 RDCP - Reconstruction Data Collection Processor (an Array Processor with additional GE capabilities) 4-3-1...
Page 46 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 ILLUSTRATION 4-3-1 CC1 POWER SWITCHES 4-3-2...
Page 47 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 ILLUSTRATION 4-3-2 OPERATOR’S CONSOLE POWER SWITCH 4-3-3...
Page 48 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-1 Power Checks (Continued) 1) Turn ON the CC1 circuit breaker (bottom rear of cabinet). The blower should begin to operate. 2) CPU Power (S140 and MV7800) S140 ONLY The Main and Expansion chassis power supplies are functionally the same except the Main chassis power supply has the capability of activating Battery Back-up (BBU).
Page 49 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 ILLUSTRATION 4-3-3 4-3-5...
Page 50 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-1 Power Checks (Continued) 3. Mag Tape Power The power supplies will be verified by checking operation of the tape drive in later parts of this section. If at any time there is a suspected fault, refer to the troubleshooting portion of DG’s 6026 Maintenance Manual,...
Page 51 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-1 Power Checks (Continued) ILLUSTRATION 4-3-5 DISK DRIVE BREAKERS d. Turn on the DC Power Switch on the front control panel, Illustration 4-34. The CHECK LED should go out, and the ON LED should light. If the CHECK LED stays lit or lights again, this indicates a power supply fault or blown fuse.
Page 52 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-1 Power Checks (Continued) h. Measure the +5V and -5V power supplies at the solder pads on the back of the disk adapter as shown in Illustration 4-3-6. The limits are:...
Page 53 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 ILLUSTRATION 4-3-8 ARGUS CABINET BREAKERS 4-3-9...
Page 54 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 ILLUSTRATION 4-3-9 ARGUS VOLTAGE & FREQUENCY CONFIGURATION 6. ACE Disk Unit Note: If an ACE Disk Drive is not present in your system, proceed to step 7. a. Turn “ON” the Power switch at the front of the ACE disk drive.
Page 55: Alpha-Numeric System
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 7. Operator’s Console Power Supply Check Refer to the CT 9800 Display Manual (Direction 18007), Chapter 6 for the procedure to check the power supplies in the Operator’s Console.
Page 56: Initial Mag Tape Check
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-4 Initial Mag Tape Check If a malfunction is found in the course of this check-out procedure, refer to the troubleshooting section of DG’s 6026 Maintenance Manual, which can be found in the 6026 Mag Tape Manual, Part 4.
Page 57 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-4 Initial Mag Tape Check (Continued) c. Verify that the tape loops line up with the center bolts of the vacuum columns. They should be even with the bolts and with each other or slightly overlapping (less than an inch). If an adjustment is required, refer to the “Reel Servo Adjustment”...
Page 58: Initial Zebra Disk Drive Check
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-4 Initial Mag Tape Check (Continued) The tape should start moving forward. To stop tape movement, go to the S/140 front console, hold the UNLOCK switch, and press the RESET switch. The tape should stop moving and the Virtual Console prompt (!) should reappear on the terminal.
Page 59 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-5 Initial ZEBRA Disk Drive Check (Continued) d. Close the pack cover on the drive, and press the START switch on the disk drive control panel (reference Illustration 4-3-5). Verify that the READY LED lights after about 30 seconds to show that the heads have loaded.
Page 60 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-5 Initial ZEBRA Disk Drive Check (Continued) e. When the format portion of the program is done, the program will write and read patterns to the entire pack looking for bad blocks. Each pass will take approximately 25 minutes, 50 minutes for Dual Drive.
Page 61 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-5 Initial ZEBRA Disk Drive Check (Continued) The status might then look like: RUN START TIME WAS 8/6/82 13:44 DRIVE 0 SECTORS READ 369410 SECTORS WRITTEN 743280 BAD SECTOR...
Page 62: S/140 Cpu Diagnostics
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-5 Initial ZEBRA Disk Drive Check (Continued) A limited number of ECC errors are acceptable, depending on the number of sectors that are written and read. An ECC error that has been corrected may be seen as a data error at the same address. No other errors are acceptable.
Page 63 1 - S200 TYPE 2 - S230 TYPE 3 - S250 TYPE k. Type: 0 ’CR’ Observe: TOP OF MEMORY = 077777 GE DTOS REV nn ==> ADES ONLY g. Type: 100022L h. FILENAME [ADES]? (Enter a Carriage Return) Observe: Copyright (C) Data General Corp., 1983,1984.
Page 64 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-6 S/140 CPU Diagnostics (Continued) DTOS ONLY 2. Run one pass of diagnostics (typing the underlined): ==> SWREG ’CR’ INPUT IN OCTAL AND ’CR’ SWREG = 000000 001000 ’CR’...
Page 65 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-6 S/140 CPU Diagnostics (Continued) DTOS ONLY The following programs will be run automatically: AINST V2 EAINST VI EAINST V2 (4 passes) AINST X EAINST X1 EAINST X2 EAINST X3...
Page 66 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-6 S/140 CPU Diagnostics (Continued) DTOS ONLY Reset the switch register by typing the underlined, as follows: ==> SWREG ’CR’ INPUT IN OCTAL AND ’CR’ SWREG = XXXXXX 000000 ’CR’...
Page 67 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-6 S/140 CPU Diagnostics (Continued) DTOS ONLY As each test comes up in the following table, the program will wait for you to type a space or some other character. A space will allow that test to run, while any other character will DELETE that test.
Page 68: Final Zebra Disk Drive Checkout
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-6 S/140 CPU Diagnostics (Continued) DTOS ONLY The switch register may be observed or changed by typing M as described in the DTOS Manual, Vol #1, Part 1. The switch settings for ECLMORT L may be found in the abstract in the DTOS Manual, Volume #2, Part 1.
Page 69: Argus Disk Drive Checkout
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 3-7 Final ZEBRA Disk Drive Checkout (Continued) DTOS ONLY At the prompt (==>), observe the following, and type the underlined responses: ==> LOAD ZDKP RELI ’CR’ LOAD: ZDKP RELI REV. nn STARTING ADDRESS = 505 SET SWPAK AS PER 8.0, HIT (CR) TO CONT.
Page 70 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 9 Mount and load Argus Diagnostics Tape “DGC Diagnostic Tape” . If necessary, refer to DTOS Vol #1, Part 1 for details. Place Tape Drive on-line, Low Density. Load 6236 DIAG to test controller.
Page 71 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 24 3-9 Final ACE Disk Check ACE Diagnostic Tape 46-266949G5 (or later revision) This section of the manual contains information for configuring, formatting and initializing the following: Single ACE Dual ACE ACE with HTD During a LFC (Load-From-Cold) procedure, you may be instructed to reformat the disk drive(s).
Page 72 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 14 The Controller Board has a Microprocessor based Self-Test that checks over 90% of the controller and interfaces at power up time. If a failure is detected during Self-Test, a corresponding LED is lit to report the failure status (Ill.
Page 73 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 14 The entire self-test takes approx. 1 second to execute. During execution, various LED’s will light and after the 1 second execution, all LED’s should be off. If a failure is detected, the RED LED’s will remain ON or will flash a specific number of times to indicate what the failure is (see note below).
Page 74 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 14 TABLE 4-3-2 SCSI MODULE ERROR CODES CODE TEST POSSIBLE FAILURE RESERVED DYNAMIC RAM TEST Data read from the dynamic RAM did not compare with data written. BMC DATA BUFFER Data read from the BMC data buffer did not compare with data written.
Page 75 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 24 Using the Software: The ACE disk or Winchester Disk does have to be formatted and have the software (microcode) properly loaded before RDOS can be installed and the disk used for scanning. The procedures that follow describe how this is accomplished.
Page 76 CFGESCSI-Configurator for GESCSI Controller Revision Level = 5.20 Copyright 1987, ZETACO, Inc. & 1999, GE, Co. The purpose of the configurator program is to allow you to tailor the GESCSI controller to your particular environment. The GESCSI controller includes an electrically erasable prom (EEPROM) which contains certain facts.
Page 77 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 14 The HELP Screen looks like this: Enter command H<CR> (? to see choices): OPERATIONS ---------- DEFAULTS - Whenever a question has a DEFAULT, the default value will be showing square brackets: []. NEW LINE or CARRIAGE RETURN is the same as entering the default value.
Page 78 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 24 The CHANGE ALL FACTS command should not be used except to reconfigure to a one or two drive configuration. The information is already entered into the firmware. If you do reconfigure, you must also write the changes to EEPROM to save them using the “U - Update EEPROM”...
Page 79 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 24 The following is the configuration information for a CT Dual ACE drive system: Enter command (? to see choices): A<CR> You must have a printer at device code 17 to log your dialogue to a printer.
Page 80 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 24 The following is the configuration information for an HTD system with dual ACE drives:0 Enter command (? to see choices): A<CR> You must have a printer at device code 17 to log your dialogue to a printer.
Page 81 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 24 The following is the configuration information for a CT system with a single ST34520N drive: Enter command (? to see choices): D<CR> Disk Selection CT - Computed Tomography C1 - CT using 1 ST34520N...
Page 82 GESCSI INITIALIZER MV7800 MICROCODE LOADER REV. 3 File Number? 3<CR> >>> GESCSI Disk Formatter Rev. 4.02 Copyright 1987, Zetaco Inc. Copyright 1999, GE Co. Command List ____________ [E]nter a device [D]elete a device [S]tart a device [H]alt a device [R]estart the program...
Page 83 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 24 The Format Program Continued: Format Errors:(Decoding) SAMPLE ERROR: Run time 0.hrs. 12.mins. 25.secs. 4.tenths. Device Code 24 SCSI dev. number Unit number State: Active Modes - FORMAT - ANALYZE REG A...
Page 84 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 COMPLETION STATUS The Completion Status bits (Status Register C; bits 4-5) indicate whether asynchronous or synchronous interrupt has occurred. See Table 4-3-5 to determine if an error has occurred. TABLE 4-3-5...
Page 85 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 INITIALIZER PROGRAM The Initializer program is used to initialize the controller and disk drive(s) as well as load ACE microcode. The Disk Initializer program has four modules. 1) ZDKINIT (does all also) 2) ANALYZE DISK.
Page 86 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 The INITIALIZER PROGRAM Continued: The following example is for an HTD Dual Ace system only: IMPORTANT: For HTD, you MUST select units 0, 1 and 3 and perform [Z]DKINIT on each.
Page 87 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 3-10 Final Mag Tape Check DTOS ONLY Run the 6026 Reliability program for one (1) hour as follows: a. Mount and load the DTOS tape. If necessary, refer to the DTOS Manual, Volume 1, Part 1, for details.
Page 88 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 3-10 Final Mag Tape Check (Continued) ADES ONLY a. Mount and load the DCG Diagnostic Tape. If necessary, refer to the DTOS Manual, Volume 1, Part 1, for details. b. At the prompt (ADES-CLI>.), observe the following and type the underlined responses: ADES-CLI>...
Page 89 CFGESCSI-Configurator for GESCSI Controller Revision Level = 4.02 Copyright 1987, ZETACO, Inc. Copyright 1999, GE Co. The purpose of the configurator program is to allow you to tailor the GESCS controller to your particular environment. The GESCSI controller includes an electrically erasable prom (EEPROM) which contains certain facts.
Page 90 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 14 Configurator Program Continued: The HELP Screen looks like this: Enter command (? to see choices): H<CR> OPERATIONS DEFAULTS - Whenever a question has a DEFAULT, the default value will be shown in square brackets: [].
Page 91 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 24 Configurator Program Continued: The CHANGE ALL FACTS command should not be used except to reconfigure to a one or two drive configuration. The information is already entered into the firmware. If you do reconfigure, you must also write the changes to EEPROM to save them using the “...
Page 92 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 24 THE FOLLOWING IS THE CONFIGURATION INFORMATION FOR A DUAL ACE DRIVE SYSTEM: Enter command (? to see choices): A<CR> You must have a printer at device code 17 to log your dialogue to a printer.
Page 93 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 24 THE FOLLOWING IS THE CONFIGURATION INFORMATION FOR AN HTD SYSTEM WITH DUAL ACE DRIVES: Enter command (? to see choices): A<CR> You must have a printer at device code 17 to log your dialogue to a printer.
Page 94 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 24 THE FOLLOWING IS THE CONFIGURATION INFORMATION FOR A CT SYSTEM WITH A SINGLE ST34520N DRIVE: Enter command (? to see choices): A<CR> You must have a printer at device code 17 to log your dialogue to a printer.
Page 95 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 24 This page left intentionally blank 4-3-49B...
Page 96 Previous “.SV” Files in RDOS DUMP Format File Number? 3 <CR> >>> GESCSI Disk Formatter Rev. 4.02 Copyright 1987, Zetaco Inc. Copyright 1999, GE Co. Command List [E]nter a device [D]elete a device [S]tart a device [H]alt a device [R]estart the program...
Page 97 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 1 ACE Drive example: Enter a Command Selection (C=Cmd List): L<CR> Run time 0.hrs. 14.mins. 18.secs. 0.tenths. Device Code 24 SCSI dev. number 0. Unit number 0. State: Active Modes - FORMAT - ANALYZE...
Page 98 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 The Format Program Continued: Format Errors: (Decoding) SAMPLE ERROR: Run time 0.hrs. 12.mins. 25.secs. 4.tenths. Device Code 24 SCSI dev. number 0. Unit number 0. State: Active Modes - FORMAT - ANALYZE...
Page 99 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 The INITIALIZER Program The initializer program is used to initialize the controller and disk drive(s) as well as load ACE microcode. The Disk initializer program has four modules to it. 1) ZDKINIT (does all also) 2) ANALYZE DISK. 3) RELOCATE BLOCKS 4) MICROCODE INSTALL ONLY.
Page 100 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 The INITIALIZER PROGRAM Continued: The initializer program error display is as follow: PIO ERRORS: (Same as the Reliability program). See PIO Errors (later in this section) for more information. CB ERRORS: Run time 0.hrs.
Page 101: Final Mag Tape Check
GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 3-10 Final Mag Tape Check DTOS ONLY Run the 6026 Reliability program for one (1) hour as follows: Mount and load the DTOS tape. If necessary, refer to the DTOS Manual, Volume 1, Part 1, for details.
Page 102 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 3-10 Final Mag Tape Check (Continued) ADES ONLY Mount and load the DCG Diagnostic Tape. If necessary, refer to the DTOS Manual, Volume 1, Part 1, for details. At the prompt (ADES-CLI>), observe the following and type the underlined responses: (Be sure to enter DMTR_RELI with no spaces) ADES-CLI>...
Page 103: Optical Disk Self-Test Checks
GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 3-12 Optical Disk SELF-TEST Checks This section assumes the Optical disk is physically installed (per Direction 18002 - Installation) but has not been powered up. You will need the following tools to perform the procedures contained in this direction: •...
Page 104 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 If the YELLOW LED remains steadily ON, this indicates the SCSI interface failed. If both RED LED’s remain steadily ON, this indicates the + 5V from the backplane is ≤4.75Vdc.
Page 105 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 TABLE 4-11-2 ODC MODULE ERROR CODES CODE TEST POSSIBLE FAILURE RESERVED DYNAMIC RAM TEST Data read from the dynamic RAM did not compare with data written. BMC DATA BUFFER Data read from the BMC data buffer did not compare with data written.
Page 106 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 WARNING: BEFORE EXECUTING THE CONFIGURATOR OR OTHER DIAGNOSTIC SOFTWARE, BE SURE TO SAVE ALL DIRECTORY INFORMATION & DATA FROM THE MDD. ANY TIME YOU EXPERIENCE DIFFICULTY WITH THE ODSS AND SUSPECT THAT THE MDD MAY HAVE TO BE REFORMATTED OR THAT DIAGNOSTICS HAVE TO BE EXECUTED, LOAD AND RUN THE “SAVEWINCH”...
Page 107 Do you have such a printer (Y or [N])? N<CR> Enter whatever name you wish Enter the Platter ID [GE service: John Doe Enter BMC Priority (0=lowest, 7=highest: S280 and MV4000 0-3 only)[4]: <CR> What is the throttle burst rate [32]? <CR>...
Page 108 14670 Heads Offset Usable Blocks 1877632 1877632 1877632 1877632 Platter ID GE service: John Doe BMC Priority Throttle burst rate Break count Base Platter number Number of Optical Drives Running in RDOS system Enter Command (? to see choices): U<CR>...
Page 109 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 This function will erase the data currently on the magnetic disk. You should only run it if you DO NOT have an active platter associated with the magnetic disk. Any Platters which have been “completed” are not active.
Page 110 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 GUIDELINES FOR USAGE The following are a few guidelines and warnings to remember when you are running service programs on the Optical Disk subsystem. WARNING: YOU CAN DESTROY PATIENT IMAGES (BY OVERWRITING IMAGE AREAS ON THE OD MEDIA) OR DELETE IMAGE DIRECTORIES ON THE MDD IF THE PLATTER HAS NOT BEEN CLOSED (AT M LEVEL).
Page 111 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 CONTROLLER ERROR LOG The ODC SCSI processor uses an error logging system to save detailed failure related information in a reserved area of the MDD. The log saves 24 words (48 bytes) of information for each error. The disk space reserved for this log is limited to six 512 byte sectors beginning at block address 78 Hex on the MDD.
Page 112 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 INTERFACE ERROR WORD C contains error status set by the ODC driver routine to indicate error conditions detected while executing the SCSI command. All bits = 0 indicates no errors detected.
Page 113 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 Examining an Error Log To examine the error log, execute the UTILITY program and use the READ/WRITE MAGNETIC DISK BLOCK command. The log starts at location 78Hex and is up to 6 blocks in length. The program displays 8 words/line (each 24 word entry is three lines long).
Page 114 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 ERROR CODE DESCRIPTION Configuration parameter block checksum error Error reading primary magnetic key or checksum error Error reading backup magnetic key or checksum error Magnetic key invalid Magnetic key does not match parameter block data & magnetic is active, closed or...
Page 115 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 14 ERROR CODE DESCRIPTION Close attempted while cache disabled and in a non-error state Model select command to Optical failed Optical write error; SCRUB area full Optical write error; Excessive drive faults Optical write error;...
Page 116 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 14 THIS PAGE IS INTENTIONALLY LEFT BLANK 4-3-70...
Page 117: System Integration
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 SECTION 9 SYSTEM INTEGRATION 9-1 X-Ray Alignment Check Refer to Chapter 6 of SM9800B for the X-Ray Alignment Check Procedure. 9-2 Laser Alignment Check Verify presence of nameplates on gantry regarding laser precautions. Refer to Illustration 4-9-1.
Page 118: Final Table-Gantry Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 Press the MOVE TO SCAN button, until movement stops. Check that the phantom has advanced 31 cm and that the internal reference planes coincide with the marks made on the phantom ± 1.5mm Axial, ± 3mm Sagital and Coronal.
Page 119 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 ILLUSTRATION 4-9-1 LASER WARNING AND PRECAUTIONS 4-9-3...
Page 120: Alignment Light Visualization
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 9-4 Alignment Light Visualization H.H.S. Requirements state that if a light is used to define the tomographic plane, it must be visible under ambient light conditions up to 500 lux. This procedure assumes that the alignment lights are aligned and that the final Table-Gantry alignment has been performed.
Page 121: Keyboard Layouts
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 4 9-6 KEYBOARD LAYOUTS The correct installation of keycap configuration is shown in the following illustrations. Reconfigure the keycaps for your configuration. 9800 QB,QC or FCO SC FCO SD KEY #...
Page 122 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 4 4-9-6...
Page 123: Load-From-Cold Procedure (Software Load)
GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 24 SECTION 10 LOAD-FROM-COLD PROCEDURE (SOFTWARE LOAD) FOR REV WI SOFTWARE INTRODUCTION This section describes the Load-from-Cold (LFC) procedure for a full software load of the CT operating system with a S140 or MV7800 from Magnetic Tape to a Zebra, Argus, or Ace disk drive. This LFC procedure will handle systems with or without High Throughput Dynamic (HTD), and system with Xenon or HiLight detectors.
Page 124 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. Save patient files and customer default data. Patient files should all be archived prior to starting the Load- From-Cold procedure. Customer default data must be st or ed onto tape since the Load-from-Cold will destroy any information on the disk.
Page 125 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. Save Customer Data : a. Save patient files. Before proceeding, existing patient data files must be archived to magnetic tape, if possible, or the data will be lost. If the system has ‘crashed’, contact Headquarters for help in saving patient data files.
Page 126 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. DUMP/A/V/MT0:0 -.XT ‘CR’ After the tape has stopped, type: RELEASE MT0 ‘CR’ The default files are now in file 0 of the tape. Label is accordingly. Remove tape from drive. e. Save the Calibration Files (SCCAL.XC): When doing a Load-From-Cold or after a system crash, it is convenient to have a copy of the calibration files (SCCAL.XC) on mag tape.
Page 127 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 16 (XENON DETECTOR) (HILIGHT DETECTOR) --CURRENT CT NUMBERS OF PHANTOMS-- --CURRENT CT NUMBERS OF PHANTOMS PHANTOM: SMALL MEDIUM LARGE PHANTOM: SMALL MEDIUM LARGE 80KV 80KV -134 -134 120KV 120KV -100 -100...
Page 128 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. conditions are met: Disk drive has not been experiencing problems, this can be checked with STATE$REP.TM (Chapter 8, Section 1-3 of Dir. 18000). Pack is still properly formatted. 3. Disk Initialization: Disk initialization records information related to the recording integrity of the magnetic media, and for the alternate placement of data that falls on a Bad Block area of the media.
Page 129 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 16 NOTE: Load DKINIT for systems with Argus or Zebra disk drives, only. For ACE disk drives, skip this step. To initialize ACE, refer to chapter 4, section 3-9 for the procedure for running the initializer on the ACE General Diagnostic Tape.
Page 130 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 16 Command? FULL ‘CR’ Command destroys any previous RDOS disk structure RDOS INIT/F must be done on the disk after the command Type CONTROL-A now to abort without loss Do you want a co-resident diagnostic area? NO ‘CR’...
Page 131 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. HEAD SECTOR CYLINDER / BAD BLOCK NUMBER 000000 000016 000156 / 141776 (for example) 000000 000017 000156 / 141777 000012 000004 000111 / 101374 000012 000005 000111 / 101375 Record the Bad Block information for future reference. Label the disk pack for ZEBRA systems with the date and bad block information.
Page 132 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. STAND BY..DATE mm/dd/yy* (Date automatically displayed for MV7800. Type in date for S140, i.e., M/D/Y ‘CR’ * For Year greater than 1999, type 4 digits, or 1XX (e.g. 2005 = 105).
Page 133 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 24 INSTALL ‘CR’ * * * LOADING INSTALLATION WORK FILES STATION TYPE (1=SCAN 2=INDEP): (The station you are presently at) DOES YOUR SYSTEM HAVE AN HTD OPTION (YIN) XENON OR HILIGHT DETECTOR (X/H):...
Page 134 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. (This sequence of questions is repeated n times) STATION 1 (Is Station 1 a Scanner or IC?) STATION TYPE (1=SCAN 2=INDEP): STATION n (Is Station n a Scanner or IC?) STATION TYPE (1=SCAN 2=INDEP):...
Page 135 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 16 (System searches for contiguous disk space GENERATING FILE SLCF00.XR and generates the number (XX) of Scan Data SCLF00.XR IS OK Files requested.) etc. THRU NUMBER REQUESTED GENERATING FILE SLCFXX.XR SLCFXX.XR IS OK...
Page 136 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. The system then lists all of the above MCOORD assignments, e.g. CX CTEX$xx etc. ================================================================================== ..This version of the system software is configuration.......Rev CLFC_WD.....VT# 13....21-MAY-90......Here at the ‘R’ level the following options exist UP -------------- Prerequisite for ‘M’...
Page 137 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 17 UP, UPAP, and M to R Timing Changes WF Change: The time it takes to run UP, UPAP and to drop from M-level to R-level , all have increased for WF software release. Refer to Table 1 for a list of timing increases for WF.
Page 138 Page Left Intentionally Blank...
Page 139 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 16 For EMI ARCHIVE feature perform the following procedure on the operating system pack. Use Load-From-Cold Rev WD or later revision tape set. NOTE: Step 5d is optional, perform if customer desires EMIARCHIVE feature (the ability to retrieve EMI (Scanner) archived image tapes on to the 9800 system pack).
Page 140 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. SYSTEM PACK INSTALL WORKSHEET LOCAL REMOTE 1 REMOTE 2 STATION TYPE (1 = SCAN 2 + INDEP): __________ __________ __________ DOES YOUR SYSTEM HAVE AN HTD OPTION? (Y/N) __________ __________ __________...
Page 141 DIR DA0 ‘CR’ DIR DZ0 ‘CR’ UPSYS ‘CR INIT MT0 ‘CR MT0:0 ‘CR’ (type <ctnrl>shift><p> simultaneously when instructed) Copyright GE 1990, all rights reserved Licensed Material. Property of GE MSBG Please wait, Initialization in progress... !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 9800 CT/T Proprietary Diagnostics LOAD PROCEDURE...
Page 142 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 19 THIS PAGE LEFT BLANK INTENTIONALLY 4-10-18...
Page 143 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. M -------------- Is the actual CT 9800 Scan-Display-Reconstruction program TAPES ---------- 8800-to-9800 archive-tape conversion program EMIARCHIVE -8800 program. Use 8800 ARCHIVE and REMOVE also DOWN ----------- Allows orderly shutdown of the operating environment CLEANUP -------- Allows cleanup of DATABASE if problems.
Page 144 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 THIS PAGE IS LEFT BLANK INTENTIONALLY 4-10-20...
Page 145 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 19 Restore the CT number for Phantoms using the REGEN program at R-level: REGEN ‘CR’ (XENON DETECTOR) (HILIGHT DETECTOR) - CURRENT CT NUMBERS OF PHANTOMS - - CURRENT CT NUMBERS OF PHANTOMS-...
Page 146 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 19 ERROR CORRECTION CHECKERBOARD RANDOM TEST EIS MRI TEST ARITHMETIC TEST ADDRESS TEST EXTENDED ADDRESSING TEST CHARACTER/COMMERCIAL INSTR. TEST FLT PT. TEST LEF INSTR/MMPU1 ERROR TEST SC MEMORY TEST REAL TIME CLOCK...
Page 147 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 19 STATIONARY SCAN #1 FILTER = AIR = 80 SCAN FO = XXXX = 20 TOMOGRAM THICKNESS = 1.5 SCAN TIME = 2.0 COLLECTING FIRST 12 SCANS [*** WAITING FOR FILTER/APERTURE ***]...
Page 148 GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM Direction 18000 Rev. 16 inaccurate. Here are 2 methods to get the phantom positioned properly. Use a or b. a. After the 2 air scans, leave (DC) and enter MGTEST (mg). Perform functions “1” (open TGGC), “33”...
Page 149 GE tubes. Failure to heed this caution may lead to patient images with artifacts and cause longer scanning delays.
Page 150 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 THIS PAGE LEFT BLANK INTENTIONALLY 4-10-26...
Page 151: Regen
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 SECTION 11 REGEN The REGEN program can be used to change a number of system parameters without performing a complete Load-from-Cold procedure. Parameters which can be changed include: Exam number, phantom CT numbers, or line printer option...
Page 152 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 REGEN ***REGENERATION OF INSTALLATION INFORMATION*** [RETURN] INDICATES NO CHANGE CURRENT EXAM NUMBER: NEW EXAM NUMBER (1-320000): (XENON DETECTOR) (HILIGHT DETECTOR) - CURRENT CT NUMBERS OF PHANTOMS - -- CURRENT CT NUMBERS OF PHANTOMS --...
Page 153 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 3D Options The following prompts appear only if the 3D Option is installed. CURRENT 3D SHADING PARAMETERS AMBIENT LIGHT DEPTH SHADING NEW AMBIENT LIGHT (0 - 1000): NEW DEPTH SHADING (0 - 1):...
Page 154 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 FASTCAL Selection IS _____ KV, _____ MM THICKNESS A PREFERRED FASTCAL? (Y/N) (CURRENTLY ____ (above prompt repeated 11 times for KV = 80, 120, 140, APERTURE = 1.3, 3.0, 5.0, 10.0 MM)
Page 155: Image Performance Verification
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 SECTION 12 IMAGE PERFORMANCE VERIFICATION 12-1 General Requirements This section describes the procedure for evaluating image performance on the 9800 CT system using WG software. Perform sections 12-2 through 12-9 for new installations. Perform section 12-10 for periodic maintenance checks and troubleshooting on existing systems.
Page 156 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change When scanned on itself, a phantom shall not be moved between calibration and scanning. No overranges will be allowed in detector channels within the specified channels. Perform a Cal Check on all calibrations prior to image performance data collection. For Cal Check, scan at 35 cm/L, 35 cm/M and 20 cm/S (for 20 cm, use the water portion of the QA phantom).
Page 157: Required Phantoms
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change 12-2 Required Phantoms The following phantoms will be used for image performance: Polyethylene phantom (48cm), 46-229361G2. Polyethylene phantom (35cm), 46-229361G3. Quality Assurance and Performance (QA) Phantom, 46-241852G1. (20 cm is no longer available).
Page 158: Phantom Self Calibration
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change 12-4 Phantom Self Calibration Phantom Self Cals for the 35cm and 48cm polys must be performed prior to image performance for new installations. In addition, if you have doubt whether the phantom CT numbers are good, or not, redo the phantom self cals.
Page 159 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change 4. First, perform center ROI’s on the 3 sets of scans that were performed for the small cal in step 3, i.e.,: 20cm/S/80 kV/300 mA/10mm/4S (2 Scans)
Page 160: Phantom Calibation
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change 5. Next, perform center ROI’s on the 2 sets of scans that were performed for the medium cal and large cal, i.e.,: 20cm/M/120 kV/200 mA/10mm/4S (2 Scans)
Page 161 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 14 Don’t forget to center each phantom to within 0.12mm of isocenter using the Calibration Program (under Utilities). * NOTE: One should use 140 MA for HiLight systems instead of 170 MA indicated for the XENON systems.
Page 162: Means And Standard Deviations
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change ILLUSTRATION 4-12-2 PHANTOM CALIBRATION PROCEDURE 12-6 Means and Standard Deviations Manipulate the ROI function at the console to determine the mean CT number and the standard deviation (i.e., image noise) using a box cursor with dimensions listed on the data sheets (rear of section).
Page 163 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change Mean CT number for the outside of the phantom image derived by averaging the mean CT number value for all of the specified outside coordinates (see data sheets).
Page 164 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change THIS PAGE IS LEFT BLANK INTENTIONALLY 4-12-10...
Page 165 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change THIS PAGE IS LEFT BLANK INTENTIOANLLY 4-12-11...
Page 166 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change THIS PAGE IS LEFT BLANK INTENTIONALLY 4-12-12...
Page 167: Data Sheets For Image Performance
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change 12-9 Beam Hardening This section describes the procedure for measuring beam hardening correction. The following phantom will be used for these tests: • 35cm poly • 20cm water section of the QA phantom Scan the 35cm phantom listed on the Data/Work sheet for that technique.
Page 168: Quality Assurance
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 12-9 Quality Assurance The 46-241852G1 Quality Assurance and Performance Phantom is used by both the customer and service person to assess image quality in accordance with BRH requirements ( 21CFR,section 1030.33). Use of this phantom is described i.0n CT 9800 Quick Operator’s Manual.
Page 169 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change Scan the polystyrene membrane which contains 5 different sized holes (10 mm., 7.5 mm., 5 mm., 3 mm., and 1.5 mm.). For instance, with the axial alignment light on the circumferential reference line of the phantom, the polystyrene membrane can be located 35 mm.
Page 170 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change 12-9-3 MTF Determination LOCATION LINE PAIRS RESOLUTION PER CM. (MM.) 6.25 ILLUSTRATION 4-12-5 RESOLUTION BAR PATTERNS The Modulation Transfer Function (MTF) is the ratio of the modulation of a test image produced by the system to the modulation present in the original image.
Page 171 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change To measure the MTF we will use an empirical method which uses the standard deviation of an ROI within a set of bar patterns in the QA phantom. This standard deviation of the bar patterns is proportional to the modulation. The following relationships shall be used to determine MTF: «...
Page 172 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Indicates Change THIS PAGE IS LEFT BLANK INTENTIONALLY 4-12-18...
Page 173 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 MEAN CT NUMBER AND NOISE (WH SOFTWARE) DATA SHEET 48cm PHANTOM/LARGE CALIBRATION CT9800 N-NUMBER: RUN NUMBER: TECHNIC SPECIFICATIONS SLICE 1 SLICE 2 Phantom σ 0 σ c σ 0 σ...
Page 174 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 THIS PAGE LEFT INTENTIONALLY BLANK 4-12-20...
Page 175 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 MEAN CT NUMBER AND NOISE (WH SOFTWARE) DATA SHEET 48cm PHANTOM/LARGE CALIBRATION CT9800 N-NUMBER: RUN NUMBER: TECHNIC SPECIFICATIONS SLICE 1 SLICE 2 Phantom σ 0 σ c X 0 σ 0 X c σ...
Page 176 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 THIS PAGE LEFT INTENTIONALLY BLANK 4-12-22...
Page 177 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 HIGH CONTRAST RESOLUTION IN AIR (DATA SHEET) * LIST PATTERNS THAT ARE VISIBLE SLICE TECHNIQUE ALGORITHM * NORMAL * TARGET RECON RECON S/120/200/5/4 Standard S/120/200/5/4 Standard S/120/200/5/4 Standard S/120/200/5/4...
Page 178 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 THIS PAGE LEFT BLANK INTENTIONALLY 4-12-24...
Page 179 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 BEAM HARDENING (WH SOFTWARE) DATA/WORK SHEET 20cm WATER SECTION OF THE QA PHANTOM RUN NUMBER: TECHNIC SLICE 1 SLICE 2 SLICE 3 SLICE 4 SLICE 5 Phantom AVX 01...
Page 180 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 RECON MATRIX: 512 X 512 COORDINATES: X 0 : 256, 95, 256, 417; 417, 256, 95, 256 X c : 256, 256 ROI BOX: 31 X 31 PIXELS AVX 0 AVX 0 = ? AVX 0 ±...
Page 181 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 BEAM HARDENING (WH SOFTWARE) DATA/WORK SHEET 35cm POLYETHYLENE PHANTOM/LARGE CALIBRATION CT9800 RUN NUMBER: TECHNIC SLICE 1 SLICE 2 SLICE 3 SLICE 4 SLICE 5 Phantom AVX 01 AVX 02...
Page 182 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 RECON MATRIX: 512 X 512 COORDINATES: X 0 : 256, 110, 402, 256; 110, 256, 256, 402 X C : 256, 256 ROI BOX: 19 X 19 PIXELS AVX 0 AVX 0 = ? AVX 0 ±...
Page 183: Slope Calibration
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 SECTION 13 SLOPE CALIBRATION 13-1 Slope Calibration Theory Slope Calibration is a software processing step in the image reconstruction cycle to identify and correct slope artifacts that may be created by changes in the HiLight Detector over time. A slope artifact may appear as a spot, smudge, band or ring artifact centered around iso-center.
Page 184 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 13-2 Advisory and Caution Messages Your first indication of a potential artifact problem will be from the Advisory message written to the system error log when the image has a high potential of containing center artifacts but not sufficient enough to degrade image quality.
Page 185 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 A secondary message posted after the Advisory & Caution messages indicates whether slope calibration was applied to the reconstruction of the identified image. If the ‘Slope Calibration was not applied’ message is posted, this means that there was a low correlation between the reconstruction data and expected slope artifact conditions.
Page 186 13-8 Auto Test The AutoTest function logs reconstruction data during a special service mode where you complete 24 scans of the GE slope & the GE flat phantoms. When Should You Run AutoTest • When the clinicians report artifact Caution messages frequently during regular patient scanning. Please note that it is not abnormal for these messages to occur occasionally on the top slices of head studies.
Page 187 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 13-11 Center Sloped Phantom Set the sloped phantom on the phantom holder and center it using the alignment lights and adjusting the dials on the phantom holder. The flat faced side of the phantoms must be parallel to the plane of rotation within +/- 0.5mm in both the x and y axis.
Page 188 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 (d) At the Exam Parameters, type in the following entries: Retain Scan data Files [Y / N]: Type Y . Head or Feet First: Press RETURN. Supine, Prone, Decubitus Left or Right: Press RETURN.
Page 189 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 13-13 Center Flat Phantom Next, center the 5” flat poly crosstalk phantom to within ± 0.5 mm. 13-14 Scan Flat Phantom Repeat the 12 scans as depicted for the slope phantom in section 13-12, except enter “Flat Phantom” when the system asks for “Name”...
Page 190 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 THIS PAGE IS LEFT BLANK INTENTIONALLY. 4-13-8...
Page 191 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 APPENDIX A SLICEF IMAGE FILE SPACE DETERMINATION The precise selection of raw data files will be established with experience and operational considerations. To aid in selecting the quantity of Raw data files at the time of the Load-From-Cold process, the approximate file size...
Page 192 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 DIR R00 (Dual Drive systems will need to check DIR R00 and DIR R01) LIST/A/E/S SLCF-.- SLCF00.XR 216096 09/23/83 16:59 09/23/83 [000000] • • • • • • (DATE • •...
Page 193 TABLE/GANTRY ADJUSTMENTS (Refer to Direction 18005 Table/Gantry, Chapter 6) DETECTOR/DAS/AP ADJUSTMENTS (Refer to Direction 18008 RDCS, Chapter 6) MULTIFORMAT CAMERA ADJUSTMENTS (Refer to SM B7800GA/GE CT Multiformat Camera, Chapter 6 or MI-10 Camera manual - Adjustment procedures) RESERVED FOR FUTURE USE...
Page 194: Section Title Page
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 13 TABLE OF CONTENTS (Continued) SECTION TITLE PAGE X-RAY ALIGNMENT FOR XENON DETECTOR SYSTEMS..........6-9-1 Requirements......................6-9-1 Adjustment of Components for X-Ray Alignment ..........6-9-4 Procedure Outline & Loading Software..............6-9-9 Plane of Rotation Test..................6-9-11 Detector Z Axis....................
Page 195: Introduction & Device Codes
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 SECTION 1 INTRODUCTION & DEVICE CODES 1-1 Introduction The numerous adjustments, device code settings, jumper settings, etc. within the CT 9800 system are included or referenced in this chapter. These adjustments should be performed: •...
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Page 197: System Power
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 SECTION 2 SYSTEM POWER The information for transformer Voltage strap connections, Phase balance, etc. are all provided in Chapter 4 of this manual along with the appropriate Functional Check procedure. Therefore, if system or subsystem power is in question, refer to Chapter 4 of this manual for the appropriate checks and corrective actions.
Page 198 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 THIS PAGE LEFT BLANK INTENTIONALLY 6-2-2...
Page 199: Data Processing Adjustments
Computer Manual Vols. 1 and 2, the 6026 Mag Tape Manual, and Data General Documentation #11, 12, & 13 (the Disk Drive Manuals). GE part numbers for service tools may be found in the CT 9800 System Manual, Direction 18003 (Renewal Parts). Information on diagnostic and exercisor programs from the DTOS tape may be found in the DTOS Manuals.
Page 200 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-3 Mag Tape Adjustments (Continued) 2. At the prompt (==>), observe the following, and type the underlined responses: ==> LOAD 6026 RELI ’CR’ LOAD: 6026 RELI REV. nn DUAL MODE TAPE RELIABILITY REV. nn...
Page 201: Tape Path Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-3 Mag Tape Adjustments (Continued) The Read, Write and Spacing commands specify the number of records to be read, written, etc. If the word count (WC) is 37777, 100 records can be read, written or spaced in approximately 40 seconds.
Page 202: Capstan Shimming
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-3 Mag Tape Adjustments (Continued) C. Capstan Shimming Refer to the procedure in the 6026 Manual, Part 4, Chapter V. This procedure also relies on the Tape Path Alignment as previously described in Part B.
Page 203: Eot/Bot Sensor Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-3 Mag Tape Adjustments (Continued) E. EOT/BOT Sensor Alignment Refer to the procedure in the 6026 Manual, Part 4, Chapter V. F. Head Alignment Refer to the procedure in the 6026 Manual, Part 4-Maintenance Manual, Chapter V. When necessary load the Command String Interpreter as described in procedure A.
Page 204: Read Gain Master Level Adjustment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-3 Mag Tape Adjustments (Continued) G. Read Gain Master Level Adjustment Refer to the 6026 Manual, Part 4, Chapter V for details of the procedure. When necessary, the command string may be loaded as described in Procedure A.
Page 205: Supply Hub Tension Adjustment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-3 Mag Tape Adjustments (Continued) J. Supply Hub Tension Adjustment The “Push-lock Tension Adjustment” in the 6026 Manual, Part 3, Chapter V, describes a type of hub no longer used on the 6026 Mag Tape. The current models employ a push-pull button mechanism for which there is no adjustment.
Page 206 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) Install the 190 MByte CE alignment pack (46-183005P27). Be sure the alignment pack is at room temperature. Bring up the drive and allow pack to spin at least 20 minutes.
Page 207 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) 4. Adjust the Servo Null: Command a single seek to cylinder 760(8) as follows: ’CR’ UNIT: ’CR’ DATA: ’CR’ COMMAND STRING: REC, SEE 760 ’CR’ (Double Density) Allow the drive to run with the heads at the alignment cylinder, 760 ,for 10 minutes.
Page 208: Head Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) F. Head Alignment This adjustment may make it impossible to retrieve patient data from the disks. Archive patient data, Q Cal and characterization files from all disk packs prior to making this adjustment.
Page 209 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) This procedure assumes that the Servo Null adjustment in the previous section has been done. The Servo Null adjustment should be done immediately prior to every alignment.
Page 210 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) Verify that the WRITE ENABLE/DISABLE switch is still in the DISABLE position. Re-install the CE pack and bring up the drive. Allow the pack to spin for 5 minutes.
Page 211 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) ILLUSTRATION 6-3-3 6-3-13...
Page 212 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) At the terminal, command the heads to seek the alignment cylinder. The following assumes the command string interpreter of ZDKP RELI is still running from the Servo Null adjustment.
Page 213 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) ILLUSTRATION 6-3-4 6-3-15...
Page 214 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) Read each head, as follows, comparing the waveform on CH #2 of the scope to Illustration 6-3-4 for each head. UNIT: ’CR’ DATA: ’CR’...
Page 215 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) ILLUSTRATION 6-3-5 At the terminal, command a read for the head to be aligned (refer to Step 2d), and physically locate the head to be aligned, referencing Illustration 6-3-6.
Page 216 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) 6-3-18...
Page 217 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) Rotate the thumb wheel to move the head until the correct wave form is achieved on the scope as shown in Illustration 6-3-8. Because there is some spring in the adjustment, always verify the waveform after the alignment tool is removed.
Page 218: Velocity (Tach Cal) Adjustment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) Perform Steps 3b thru 3d for each head needing alignment. Re-torque each head to 5 in/lbs. Check the alignments again, since they may have moved in Step f, and realign if necessary.
Page 219 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) 3. At the DTOS prompt (==>), observe the following, and type the underlined responses: ==> LOAD ZDKP RELI ‘CR’ LOAD: ZDKP RELI REV. nn STARTING ADDRESS = 505 SET SWPAK AS PER 8.0, HIT ’CR’...
Page 220: Spindle Carriage Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-4 Disk System Adjustments (Continued) H. Spindle Carriage Alignment Refer to DG #11, Part 2, for the procedure. Adapter Power Supply Adjustment Because Data General purchases the adapter power supplies from outside sources, it is possible that more than one type of power supply may be encountered.
Page 221 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 Sections 4, 5, 6, 7 and 8 are not included in this chapter. For reference information, refer to the Table of Contents at the beginning of this Chapter. 6-4-1...
Page 222 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 THIS PAGE IS LEFT BLANK INTENTIONALLY 6-4-2...
Page 223 GE tubes. Failure to heed this caution may lead to patient images with artifacts and cause longer scanning delays.
Page 224 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 THIS PAGE LEFT INTENTIONALLY BLANK 6-9-0A...
Page 225: X-Ray Alignment For Xenon Detector Systems
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 SECTION 9 X-RAY ALIGNMENT FOR XENON DETECTOR SYSTEMS If you are performing alignments on a system with HiLight detector, skip this section and perform section 9A instead. 9-1 Requirements 1.
Page 226 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Directions in the gantry geometry are defined as follows: • Theta- Along the tangent to gantry rotation; i.e., clockwise (+) or counter clockwise (-) on the rotating structure. 0° theta is defined with the tube unit at bottom dead center.
Page 227 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9-2 6-9-3...
Page 228: Adjustment Of Components For X-Ray Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 5. For proper alignment, the following conditions must be achieved: • To maintain uniform slice thickness across the reconstruction circle, the plane of rotation of the X-Ray fan beam must be parallel with the plane of gantry rotation.
Page 229 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9-3 Adjustment of tube position is done with the gantry at a theta position of -90° or +270° (tube at 3:00 O’clock position). In this position, the tube is accessible through the right side of the gantry without opening the front gantry cover.
Page 230 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9-4 2. Collimator Refer to Illustration 6-9-5. The 46-198380G2/G802 collimator assembly mounts directly to a rotating surface in the gantry. It is designed so that the plane of the fan beam is centered 2.16” (54.86mm) from this mounting surface.
Page 231 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 The collimator is located to the gantry by two pins in slotted holes which allow shift in the theta direction. It is secured with (4) 1/4-20 Hex cap screws with flat washers through slotted holes. A special screw at the top of the collimator with the gantry at -90°...
Page 232 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 3. Xenon Detector Refer to Illustration 6-9-7. The detector is supported to the gantry mounting plate with three shock mounts. Each shock mount has an adjustable positioning screw to move the detector in the Z direction. The detector is not adjustable in the theta or radial direction.
Page 233 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 The software program “Detector Alignment” with the three V block tools (46-229269G1) has been discontinued. The detector is now aligned using polaroid film. To adjust the detector Z position, loosen the 1/4-20 Hex socket cap screw, then loosen the .75” Hex lock nut.
Page 234 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9-8 6-9-10...
Page 235 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 9-4 Plane Of Rotation (Requires a cold tube) This procedure checks and adjusts the plane of rotation of the X-Ray fan beam so that it is perpendicular to the axis of gantry rotation within 0.010”...
Page 236 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 5. Remove and develop the film. Mark a “T” on the film to identify the table side as in Illustration 6-9-10. Verify that the narrow exposure lies within the wider X-Ray exposure.
Page 237 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9-11 XENON DETECTOR BEAM ON WINDOW 6-9-13...
Page 238 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 9-5 Xenon Detector Beam On Window (Requires a cold tube) This procedure checks and adjusts the position of the Xenon detector window so that it intercepts the entire width of the X-Ray fan beam under worst case conditions.
Page 239 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 6. Be sure that no X-Ray exposures have been made for at least 5 minutes. The remainder of this procedure must be done with a cold tube. Enter CTDS •...
Page 240 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9-12 6-9-16...
Page 241 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 9-6 Tube Output and Detector Channel Check This check is used to verify tube output as well as normal channel output relative to the reference channels. It is also useful when comparing reference channel output to verify that there is nothing partially blocking the outermost reference channels.
Page 242 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 3. The average value of the 5 reference channels (i.e., channels 2, 3, 734, 735 and 736) must be greater than or equal to 115,000 and the other signal channels (i.e., channels 4 through 733) must be 40%-60% of the average of the 5 reference channels.
Page 243: Iso Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ISO Alignment (Requires a cold tube) ILLUSTRATION 6-9-13 ISO ALIGNMENT 6-9-19...
Page 244 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 This procedure aligns the tube focal spot with the detector center. Refer to Illustration 6-9-13 for procedure flow and perform the following calibration scan. NOTE: Verify that the Tube Unit is “cold”; i.e., that it has had no more than 25 kilojoules exposure •...
Page 245 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 4. Calculate ISO center using CTDS alignment program. Enter CTDS • (AL) Alignment • (1) Isocenter • (xx) Input Exam # recorded in step 3. • (ISOCAL) Enter Air calibration filename from step 1.
Page 246: Cbf Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9-14 CBF ALIGNMENT 6-9-22...
Page 247 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 9-8 Xenon Detector CBF Alignment (Requires a cold tube) This procedure aligns the center of the body filter coincident with ISO alignment on Xenon detector systems. Refer to Illustration 6-9-14 for the procedure flow.
Page 248 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 4. Review CBF projection • CBF must equal Isocenter + 0.20 channels. • If OK, this procedure is done, otherwise proceed to Step 5. 5. At gantry • Check for 0° tilt and table at load home normal •...
Page 249: System Sag
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9-15 SYSTEM SAG 6-9-25...
Page 250 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 4) Review sag data. • Channel difference must be less than 3.0 channels for an unblocked detector and less than 0.3 channels for a blocked detector. • The corresponding tube positions should be approximately 180° apart. They represent the gantry positions where the extreme positions of sag were reported.
Page 251: Q Cal Intensity
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 9-11 Xenon Detector Q Cal Intensity Channel 1 of the Xenon detector has a wedge located in the X-Ray beam. Its purpose is to provide a reference signal proportion of the Z position of the fan beam. This procedure checks the intensity of the signal from channel 1 and is used to verify detector wedge.
Page 252 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 9-12 The following records and data should be saved for H.H.S. purposes after completing x-ray alignment Xenon Detector Beam on Window, Section 9-5 The 10mm beam must be contained within the detector window.
Page 253 GE tubes. Failure to heed this caution may lead to patient images with artifacts and cause longer scanning delays.
Page 254 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 20 THIS PAGE LEFT INTENTIONALLY BLANK 6-9A-0A...
Page 255 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 SECTION 9A - X-RAY ALIGNMENTS FOR HILIGHT DETECTOR SYSTEMS 1. This section describes the requirements for X-Ray alignment on a HiLight detector system, position of the critical components and procedures to achieve the required alignment specifications. The critical components for alignment are the tube unit, collimator, and the detector.
Page 256 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Directions in the gantry geometry are defined as follows: • Theta - Along the tangent to gantry rotation; i.e., clockwise (+) or counter clockwise (-) on the rotating structure. 0° theta is defined with the tube unit at bottom dead center.
Page 257: Requirements
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 NOTE: There is no radial adjustment of the tube or collimator. This dimension is adjusted by rocking the detector. The tube unit is adjustable in the theta and the Z dimensions.
Page 258 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9A-3 Adjustment of tube position is done with the gantry at a theta position of -90° or +270° (tube at 3:00 O’clock position). In this position, the tube is accessible through the right side of the gantry without opening the front gantry cover.
Page 259 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9A-4 2. Collimator Refer to Illustration 6-9A-5. the 46-198380G2/G802 collimator assembly mounts directly to a rotating surface in the gantry. It is designed so that the plane of the fan beam is centered 2.16” (54.86mm) from this mounting surface.
Page 260 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 13 The collimator is located to the gantry by two pins in slotted holes which allow shift in the theta direction. It is secured with (4) 1/4-20 Hex cap screws with flat washers through slotted holes. A special screw at the top of the collimator with the gantry at -90°...
Page 261 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 3. Detector Refer to Illustration 6-9A-7. The detector is supported to the gantry mounting plate with three mounts. Each mount has an adjustable positioning screw to move the detector in the Z direction. In addition, the HiLight detector’s radial alignment is adjustable through the use of a cam on the high channel end of the detector.
Page 262 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 Note: The detector adjustment hardware works such that CW adjustment moves the detector toward the gantry. This is the opposite of Xenon. While holding the adjustment stud with a 7/16” wrench, re-tighten the adjustment locking nut. Torque the inside detector mounting nuts to 25 ft-lbs.
Page 263 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9A-8 1. For a system functional check, perform all of the steps listed in Illustration 6-9A-8. 2. For a previously aligned system, one or more of the steps may be omitted on checkout following replacement of the tube, collimator or detector.
Page 264 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 13 9A-4 Plane OF Rotation (Requires a cold tube) This procedure checks and adjusts the plane of rotation of the X-Ray fan beam so that it is perpendicular to the axis of gantry rotation within ±...
Page 265 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9A-9 ILLUSTRATION 6-9A-10A ILLUSTRATION 6-9A-10B BAD P.O.R. GOOD P.O.R. 5. Remove and develop the film. Mark a “T” on the film to identify the table side as in Illustration 6-9A-10.
Page 266 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 13 NOTE: A positive tube shift moves the tube toward the table, a negative shift towards the gantry. In the example of Illustration 6-9A-10A, the X-Ray tube should be moved toward the table to shift the wide beam to be better centered over the narrow beam.
Page 267 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 7) Note the position of each film and remove all three pieces of film. Press heavily on the film and draw a line on the film between the marks you made previously. This line must show on the film after it is developed.
Page 268 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 15) Turn the mounting studs the specified amount to bring the detector into alignment. One turn of the mounting adjustment moves the detector 0.071” (1.81mm) Note: The detector adjustment hardware works such that CW adjustment moves the detector toward the gantry.
Page 269 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 g) Check that flex circuits are not defective h) Check that the DAS is performing normally In addition: Images should be free of artifacts, for the DOSE MEASUREMENT check Fix anything which is not correct.
Page 270 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 detector type XENON HILIGHT low limit 115,000 80,000 counts high limit 158,000 185,000 counts channels 734-736 748-750 Note: Channel 1 will, have an output approximately 55% to 60% of the 5 reference channel average.
Page 271 QA phantom image noise measurements. ( ref. OMB98901) Center the QA phantom (water portion) in the aperture. Axial Scan: GE - QA head phantom 120KVP, 340 mas = 170 ma x 2 sec. scan ( published dose = 4 RADS ) 10 mm.
Page 272 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 CT GUIDE FOR TROUBLESHOOTING LOW SIGNAL OUTPUT 6-9A-14D...
Page 273: Radial Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 9A-7 Radial Alignment If this is a detector installation, perform Radial alignment. Otherwise, skip this section and go directly to ISO center. Radial alignment need only be done for detector installations or if the detector has been removed from the gantry for any reason.
Page 274 GENERAL ELECTRIC MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Rev. 22 Direction 18000 NOTE: Some detectors may be slightly warped as evidenced by space between the adjoining legs of the rotational alignment tool. If this occurs, switch the legs of the tool. ILLUSTRATION 6–9A–11 ROTATIONAL ALIGNMENT TOOL Enter option 7 (Centroid).
Page 275 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 18 7) Install a dial indicator on the side of the detector with the rotational adjustment hardware. Set it to .000”. See figures 6-9A-12 and 6-9A-12A. ILLUSTRATION 6-9A-12 ILLUSTRATION 6-9A-12A...
Page 276 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 13 8) Loosen all three sets of the large detector mounting nuts slightly, so that they are finger tight. See figure 6-9A-7. 9) Loosen the allen head rotational adjustment locking screws. See figure 6-9A-7.
Page 277: Iso Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 9A-7 ISO Alignment (Requires a cold tube) ILLUSTRATION 6-9A-13 ISO ALIGNMENT 6-9A-19...
Page 278 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 This procedure aligns the tube focal spot with the detector center. Refer to Illustration 6-9A-13 for procedure flow and perform the following calibration scan. NOTE: Verify that the Tube Unit is “cold”; i.e., that it has had no more than 25 kilojoules exposure [KV•mA•Sec/1000] within the last 30 minutes.
Page 279 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 4. Calculate ISO center using CTDS alignment program. Enter CTDS • (AL) Alignment • (1) Isocenter • (xx) Input Exam # recorded in step 3. • (ISOCAL) Enter Air calibration filename from step 1.
Page 280: Cbf Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 ILLUSTRATION 6-9A-14 CBF ALIGNMENT 6-9A-22...
Page 281 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 9A-8 HiLight CBF Alignment (Requires a cold tube) This procedure aligns the center of the body filter coincident with ISO alignment. Refer to Illustration 6-9A-14 for the procedure flow.
Page 282 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 12 4. Review CBF projection • CBF must equal Isocenter ± 0.20 channels. • If OK, this procedure is done, otherwise proceed to Step 5. 5. At gantry ° •...
Page 283: System Sag
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 13 ILLUSTRATION 6-9A-15 SYSTEM SAG 6-9A-25...
Page 284: 13 Steps Following X-Ray Alignment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 23 4) Review sag data. Channel difference must be less than or equal to 1.1 channels. The corresponding tube positions should be approximately 180 apart. They represent the gantry positions where the extreme positions of sag were reported. Typically they will be 280 to 300 and 100 .
Page 285: Alignment Light Adjustment
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 SECTION 10 ALIGNMENT LIGHT ADJUSTMENT 10-1 Introduction DANGER: LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAM TO PREVENT EYE INJURY. CAUTION: Laser radiation do not stare into beam.
Page 286: Recommended Alignment Sequence
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 10-2 Recommended Alignment Sequence ° Ensure gantry tilt = 0 (use gantry tilt tool) ° Ensure gantry azimuth = 0 (when lights selected at table) (use Azimuth pins + C pulse)
Page 287 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 10-3 Table To Gantry Alignment Before adjusting the alignment lights, verify that the table and gantry are properly aligned per section 11. 10-4 Laser Alignment Tool Setup To properly align and center the alignment tool in the scan plane, proceed as follows: 1.
Page 288 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 Ending Location : 50 mm. kV : 120 mA : 100 ° Tilt : 0 10. After the scout scan of step 9 is completed, select Axial Scan from the group - prompts at the bottom of the screen.
Page 289 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 NOTE: Do not use the black centerline stripe which traverses the length of the cradle as a reference for Sagittal Light alignment. For most cradles, this stripe will not pass through the center of the cradle.
Page 290 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 ILLUSTRATION 6-10-2 LASER LIGHT ALIGNMENT TOOL 6-10-6...
Page 291 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 ILLUSTRATION 6-10-3 SCOUT IMAGE OF ALIGNMENT TOOL SHOWING LINE CURSOR 6-10-7...
Page 292 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 ILLUSTRATION 6-10-4 LOCATING THE CROSS HAIR IN THE TEFLON END OF THE LASER ALIGNMENT TOOL 6-10-8...
Page 293 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 10-5 - Alignment of Internal Axial Laser Lights, Left and Right ILLUSTRATION 6-10-5 INTERNAL AXIAL LASER LIGHT CAUTION: The alignment light adjustment screws must be handled carefully, i.e., do not overtorque the screws.
Page 294 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 Proceed as follows to align the internal axial lights: 1. Turn on the alignment lights via the gantry test switch. 2. Verify that the collimator blades are closed. 3. Back off the “D” locking screw. (Illustration 6-10-5) 4.
Page 295 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 10-6 - Alignment of Sagittal Laser Light ILLUSTRATION 6-10-6 SAGITTAL LASER LIGHT CAUTION: The alignment light adjustment screws must be handled carefully, i.e., do not overtorque the screws. Failure to heed this caution, may cause damage to the alignment light adjustments.
Page 296 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 --- Screws “A”, “B” and “C” can be turned the same amount in the same direction to move the mirror into the beam --- Screw “C” moves the beam into and out of the gantry.
Page 297 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 10-7 - Alignment of Coronal Laser Light, left and right ILLUSTRATION 6-10-8 CORONAL LENS ALIGNMENT 6-10-13...
Page 298 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 Maximum allowable ISO height to coronal plane should be ± 3mm. CAUTION: The alignment light adjustment screws must be handled carefully, i.e., do not overtorque the screws. Failure to heed this caution, may cause damage to the alignment light adjustments.
Page 299 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 8. If necessary, use the 2 “H” screws to adjust the spring tension on the end of the brake lever opposite the solenoid for the left or right coronal light.
Page 300 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 10-8 Alignment of External Axial Laser Lights, Left and Right ILLUSTRATION 6-10-9 EXTERNAL AXIAL ALIGNMENT LIGHTS Maximum allowable external axial to 31 cm parallel to scan axis misalignment is ± 1.5mm.
Page 301 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 CAUTION: The alignment light adjustment screws must be handled carefully, i.e., do not overtorque the screws. Failure to heed this caution, may cause damage to the alignment light adjustments.
Page 302 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 THIS PAGE IS LEFT INTENTIONALLY BLANK 6-10-18...
Page 303 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 SECTION 11 TABLE TO GANTRY ALIGNMENT ILLUSTRATION 6-11-1 TABLE TO GANTRY ALIGNMENT Proper installation of the table and gantry using the floor templates will not always insure proper alignment between the table and gantry.
Page 304: Vertical Plane Of Table Perpendicular To Scan Plane
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 11-1 Vertical Plane Of Table Perpendicular To Scan Plane To verify that the table is perpendicular to the scan plane, scan the Laser Light Alignment Tool as follows: 1. Install the alignment tool on the phantom holder.
Page 305 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 3. Mount the patient headholder to the end of the cradle. 4. Turn on the alignment lights. 5. Advance the table into the gantry until the internal alignment light cuts the headholder at the point where you want to scan (arbitrary).
Page 306 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 ILLUSTRATION 6-11-1 DISPLAYED IMAGE OF HEADHOLDER 6-11-4...
Page 307 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 ILLUSTRATION 6-11-2 MEASURING THE HEADHOLDER OFF - CENTERING 6-11-5...
Page 308 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 6 THIS PAGE IS LEFT INTENTIONALLY BLANK 6-11-6...
Page 309 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 APPENDIX A BMC / ERCC & HIB Switch & Jumper Settings NOTE: Before beginning this installation or if the HIB or BMC/ERCC boards are replaced, the following dip switch settings must be checked and verified.
Page 310 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 ILLUSTRATION 6-A-1 ARGUS DISK INTERFACE SWITCHES/JUMPERS 6-A-2...
Page 311 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 ILLUSTRATION 6-A-2 S140 BMC/ERCC SWITCHES/JUMPERS 6-A-3...
Page 312 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 THIS PAGE LEFT BLANK INTENTIONALLY 6-A-4...
Page 313 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 CHAPTER 7 SCHEMATICS TABLE OF CONTENTS SECTION TITLE PAGE SYSTEM INTERCONNECT (DRAWING)................7-1-1 SYSTEM INTERCONNECT (CONTRACTOR FURNISHED)..........7-2-1 SYSTEM GROUNDING ....................7-3-1 SYSTEM POWER MODULE SCHEMATIC..............7-4-1 Not Applicable 7-5-1 OVER TEMPERATURE SENSOR SCHEMATICS ............7-6-1...
Page 314 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 THIS PAE LEFT BLANK INTENTIONALLY 7-ii...
Page 315 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 2 7-1-1...
Page 316 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 7-1-2...
Page 317 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 15 7-1-3...
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Page 319 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 7-2-1...
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Page 385 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 OVERTEMPERATURE SENSOR SCHEMATIC (COMPUTER CABINET) 7-6-1...
Page 386 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 OVERTEMPERATURE SENSOR UNIT (COMPUTER CABINET) 7-6-2...
Page 387 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 REMOTE CONTROL STATION POWER 7-7-1...
Page 388 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 REMOTE CONTROL STATION POWER 7-7-2...
Page 389 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 CHAPTER 8 DIAGNOSTICS TABLE OF CONTENTS SECTION TITLE PAGE HOW TO USE 9800 DIAGNOSTICS................8-1-1 R Level .......................8-1-1 CTDS Programs ....................8-1-2 STATEREP.TM ....................8-1-16 CTEX SERVICE PROGRAMS ..................8-2-1 RECON Shutdown ....................8-2-1 Release Notices ....................8-2-2...
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Page 391: How To Use 9800 Diagnostics
The CTDS diagnostics are loaded from tape to the system disc pack Directory CTDS as described in Chapter 4 of Direction 18000. These diagnostics are operated under the RDOS operating system and are intended for GE Medical Systems Personnel Use Only. These diagnostics must be deleted from the system pack after use.
Page 392: Ctds Programs
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 CTDS Programs Additional 9800 diagnostic programs are available by entering “CTDS”, return, at R level (Directory CTDS). (These diagnostic programs are available on CTDS tape. DIR CTDS CTDS 9800 CT DIAGNOSTICS: REVISION..TAPE 04 MADE ..
Page 393 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 (DL) DATA LINK TEST HELP PPI STATUS REPORT THE HELP FUNCTION MAY BE USED TO GAIN MORE INFORMATION ABOUT THE STRUCTURE AND OPERATION OF THE DIAGNOSTICS SHIPPED WITH THE 9800 CT/T PRODUCT.
Page 394 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 SECTION 1-3 STATE$REP.TM The STATE$REP.TM file is located at in directory DZ0 at R level. This file tracks “ON-LINE” disk drive STATUS and ECC errors. It is useful for finding:...
Page 395 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 NON-RECOVERABLE ERRORS= The number of Disk errors the System couldn’t recover from. A non-zero number means the system probably had a system panic. Note: The system may have non-recoverable errors but have 0 ECC or Uncorrected errors. This means that the system detected a non-recoverable error and retried;...
Page 396 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 TABLE 8-1 DIA STATUS BITS DECODE NAME WHAT TO DO Control Full The adapter is talking to another disk drive and the rest of the status word should be ignored.
Page 397 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 TABLE 8-1 (Continued) DIA STATUS BIT DECODE NAME WHAT TO DO Illegal Sector A sector address that was too large ws transferred between the controller and adapter. Most likely causes: •...
Page 398 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 TABLE 8-1 (Continued) DIA STATUS BIT DECODE NAME WHAT TO DO Surface/Sector A Surface/sector Error was detected during a header check. This bit should Error never be a 1. Possible problems are: •...
Page 399 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 TABLE 8-2 DIB STATUS BITS DECODE NAME WHAT TO DO Invalid Status The command channel is busy, ignore this status word. (Reference DIA STATUS bit 0) Reserved The drive is reserved by another computer. This bit should always be a 0. If it is set, the most likely causes are: •...
Page 400 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 TABLE 8-2 (Continued) DIB STATUS BITS DECODE NAME WHAT TO DO NOT USED Should be a 0. If always = 1, the DISK CONTROLLER Board is at fault. Illegal Address An illegal Cylinder or Surface address was received by the Disk Drive.
Page 401 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 TABLE 8-2 (Continued) DIB STATUS BITS DECODE NAME WHAT TO DO Clock Fault The servo clock failed. This bit should always be a 0. Possible problems are: • Bad Disk pack servo surface •...
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Page 403: Ctex Service Programs
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18033 Rev. 1 SECTION 2 CTEX SERVICE PROGRAMS Several R level programs exist within CTEX (CT EXECUTIVE or User Software) at Directory T13. These programs, except for ERLG and FK, should only be used as a last resort as data may be deleted.
Page 404: Release Notices
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 WARNING: USE OF RCLEAN (OR RCLEANP) IS DANGEROUS AS LOSS OF IMAGE DATA WILL RESULT. TO AVOID UNNECESSARY RE-EXPOSURE OF THE PATIENT TO X-RAY, USE THESE PROGRAMS ONLY AS A LAST RESORT AS EXPLAINED IN THIS SECTION.
Page 405 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18033 Rev. 3 1. CTEX Release Notice This release notice is called from DIR DZO at R level by entering TYPE 9800.RN return. The following example print out will appear on the A/N CRT (if a line printer is available, enter PRINT 9800.RN return). 9800.RN describes software changes that have been made and problems that still remain.
Page 406 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18033 Rev. 3 Service Release Notice This release notice is called from DIR CTDS at R level by entering TYPE SCDG.RN return. The following example print out will appear on the A/N CRT (if a line printer is available, enter PRINT 9800S.RN return).
Page 407: Error Log
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 SECTION 3 ERROR LOG Entering the Log A log of all system errors is available for review. At R Level type M/S return and press the “MANAGE” key (M/S is for Service Use Only,) not for Customer use.
Page 408 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 _____________________________________________________________ This displays the vari- ERROR LOG FILE DISPLAY ous options to examine the error log. DISPLAYING CTEXER.LG POSITIONED AT: BOTTOM MOVE UP n LINES (n DEFAULTS TO PREVIOUS VALUE)
Page 409 GE MEDICAL SYSTEMS CT 9800 QUICK SYSETM Direction 18000 Rev. 1 _____________________________________________________________ ERROR LOG OPENED: 11/17/82 12:12:45 MESSAGE: MGERR LOGGED: 11/17/82 12:12:56 MQERR ERROR: PS-00000K ES-000017K IER= 5301 CALLED FROM LOCATION: 834646 MESSAGE: LDDIDAS LOGGED: 11/17/82 12:12:56 DAS CALL ERROR...
Page 410: Examining The Error Report
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-2 - Examining An Error Report Determine the approximate time the customer experienced a system problem. Enter the error log, move to the bottom of the log, then move up thru the log to find the errors that were logged at that time. Note that a value for n is entered the first time and that the key, or enter key, can be hit repeatedly without re-entering the same value of n.
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Page 412: Identify Error Type
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 Identify Error Type There are several types of error messages that are recorded in the error log. The following examples describe how to identify the type of error and where to find additional information to decode the error.
Page 413: Error Interpretation
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 3-3-2 Error Interpretation The troubleshooting method of error interpretation is as follows: 1. Record the Software Group information contained in Field 5 including the sub-routine name that may be in Field 1.
Page 414 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 • PS is the PERIPHERAL STATUS WORD. PS normally = 0. • UPS is the UNEXPECTED PERIPHERAL STATUS WORD. (If two words are returned from the peripheral device to the PPI, the PS is the first word and the UPS is the second word.) UPS normally = •...
Page 415: Error Log Breakpoints
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 Error Log Breakpoints Error Logs can become quite lengthy and periodically should be entered to partition the old logs from the new. A breakpoint is entered in the utility programs menu and performs the following example: When you enter the Error Log, with the current log selected, you will be at the bottom of the current log.
Page 416 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 ! ! ! ! ERLG error year month → L = December This name is assigned on the day the breakpoint is set (error log closed).
Page 417 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 To set a breakpoint, the following procedure is used: From DIR DA0 (or DZ0) go to “M” level and hit the “MANAGE” key to display this menu: ___________________________________________________ MANAGE MENU Enter option 6 SPECIFY SELECTION =>...
Page 418 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 ___________________________________________________ This screen appears while breakpoint is being set. = BREAKPOINTING LOG FILE ← ← This is the name of the old OLD LOG FILE CALLED: ERLG86B06A.LG log created by breakpoint.
Page 419 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 NOTE: After many months of accumulating errors, it is possible to fill the disk so that RECON cannot occur due to insufficient disk space. (Certain errors may also cause the disk to be filled quite rapidly with error messages).
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Page 421: System Errors
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 SECTION 4 SYSTEM ERRORS The following section describes system level error codes. Error codes which are specific to an individual subsystem will be described in the subsystem manuals. These error codes are posted to the master terminal (the Operator’s Console alphanumeric) when a fault occurs and is identified by the system.
Page 422 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 1X0004 PROBLEM: Inconsistent system data (e.g., illegal device address, partial system overwirte by user program, etc.). RECOMMENDATION: Perform a partial initialization. 1X0005 PROBLEM: Master device data error. RECOMMENDATION: Run disk reliability test.
Page 423 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 1X0023 PROBLEM: Power supply fault (S-280 Only). RECOMMENDATION: Does Not Apply. 1X0024 PROBLEM: Argus (Acorn) in Dual processor configuration- contention problem. RECOMMENDATION: Does Not Apply. 1X0070 PROBLEM: PPI has given an invalid interrupt status response or interrupt w/ no status.
Page 424 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 00032 ERADR No Starting Address 00033 ERRD Attempt to Read Into System Space 00034 ERDI0 Direct I/O Access Only 00035 ERDIR Files Must Exist in the Same Directory 00036...
Page 425 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 RDOS OR SYSTEM FORTRAN ERROR PARAMETER ERROR CODE CODE 00110 ERABT Task Not Found For Abort 00111 ERDOP Device Previously Opened 00112 EROVF System Stack Overflow 00113 ERNMC No MCA Receive Request Outstanding...
Page 426: System Hang Crash Tape
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 4-3 - System Hang Crash Tape A “System Hang” is when the system console keyboard becomes non-responsive and you have determined that the CPU is not busy in some normal activity. It does not include ’Offline line printers’ or ‘rewinding magnetic tapes’.
Page 427 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 4. Then we will Read Switch Register and force a ’PANIC’ by typing ------------------------------------ <LF> (PANIC HANDLER ADDR) ------------------------------------ Type a capital I to reset the S140. Type the panic handler address followed by a capital R.
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Page 429: Data Processing Subsystem
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 SECTION 5 DATA PROCESSING SUBSYSTEM 5-1 - Problem Isolation Most of the documentation and diagnostics treat the computer, disk drive, and mag tape drive as separate, independent units, so the first step in troubleshooting a data processing problem will be to isolate the prob- lem to one of the above three units.
Page 430: S/140 Computer
Manual in the S/140 Manual Volume 1, Part 2, Chapter 7. Note that the callable names of the diagnostics are not necessarily the same as those used on GE’s DTOS tape. If in doubt, match the 096- number of the diagnostic in the F.E.
Page 431: Disk Drive
Direction 18000 Rev. 1 A list of diagnostics on GE’s DTOS tape and the equipment the diagnostic tests is in the DTOS Manual Volume #1, Part 1. Cross references to other documentation is also contained in the program list. Abstracts of the DTOS programs which contain operating instructions may be found in the DTOS Manual Volume #2.
Page 432 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 DATA TRANSFER STATUS SEEK DONE 2 3 4 5 Bits Name Meaning when 1 Control full The drive command initiated by the previous IOPULSE OR ORESET has has not yet been issued to the selected drive.
Page 433 Invalid status The command channel is busy and bits 5-6 and 8-15 should be ignored. Reserved The drive is reserved by the other processor (there is no other processor in a GE CT 9800 system). Trespassed One of the drives was trespassed upon by the other processor (there is no other processor in a GE CT 9800 system).
Page 434 Guide”. The information given for the 6236_FMTR program is accurate for the 6239_FMTR program. However, the diagnostic program 6236_FMTR is not present on the distribution tape because it applies only to controller that is not used in the GE Argus configuration. The updated version of that program is 6239_FMTR.
Page 435 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 ARGUS GENERAL INFORMATION: The Argus drive contains 16 extra sectors for every cylinder to allow handling of bad blocks. When a new bad sector is detected, the defective sector is written with a code to skip that sector. When the Argus Micro-Eclipse encounters the bad sector, it skips that sector and finds the next good replacement.
Page 436: Mag Tape Drive
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 5-4 - Mag Tape Drive The primary reference for the Mag Tape Drive is the 6026 Mag Tape Manual. The 6026 Manual contains Tech. Manuals which have good functional descriptions, a Maintenance Manual with an excellent troubleshooting section, and the schematics.
Page 437 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 DRIVE STATUS ERROR DATA REWIND ILLEGAL HIGH PARITY END OF END OF BEGIN SEND FIRST WRITE UNIT LATE DENSITY ERROR TAPE FILE OF TAPE TRACK TAPE CLOCK CHAR LOCK...
Page 438 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 1 Bits Name Meaning when 1 Write Lock The tape on the selected transport is write-protected. Odd Character The record just read or written contains an odd number of bytes.
Page 439 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 SECTION 6 AP DIAGNOSTICS ( ST-CT) The purpose of this section is to communicate troubleshooting hints for problems that have been observed repeatedly at the factory. 6-1 Can we talk - at all? A good place to begin ST-CT AP troubleshooting is to determine if the S140 and ST-CT processors can communicate at all.
Page 440 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 ELECTRO - STATIC DISCHARGE STATIC KILLS ELECTRONIC CIRCUITS! 46-194427P231 ESD Control Kit - Available thru PRO. If you don’t have one in your tool kit, order one today Always wear an ESD wrist strap when handling or touching electronic devices. Put the wrist strap ON...
Page 441 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 The following screen is observed when you execute “UPAP” from the CTDS menu. This is only the first portion of the screens that are displayed during UPAP and display the DeadStarts results. The remainder of the screens are described later in this chapter under “Common Kernel Abort Codes &...
Page 442 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 1) CONFIGURATION INFORMATION Description: (reads and displays information contained within the AP configuration file stored on the disk drive). • No AP related failure can occur here 8-6-4...
Page 443 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 2) BREAKOUT POLLING Description: (SB software does not use Breakout Polling in the UPAP process. Rev. “SC” does). Breakout polling is a software method to resynchronize the RS232 communications port (6809) to the HIB.
Page 444 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 At this point, doing RAP’s in WTERM will also fail, and failure points are the same. Failure points are: 1) The 6809 processor on the IOC is “HUNG” in a byte count loop - To correct this error condition, cycle AP power or run many RAP’s.
Page 445 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 4) MASTER TESTS Description: This section of the deadstarts executes diagnostics to test the functionality of the MASTER processor card. The onboard ROM, RAM, and hardware TIMER are checked. The MASTER cards ability to access the PUBLIC memory card using the public bus is also tested.
Page 446 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 Failure points are: 1) Cable break 2) Loss of ± 12 volts at drivers in AP (IOC) or S140 (HIB) 3) Loss of + 5v at AP 4) Wrong baud rate settings on IOC card (DIP switch) 5) Wrong baud rate setting or device select on HIB (DIP switches) 6) Bad RS232 driver / receiver IC’s on IOC or HIB...
Page 447 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 8) IOP0 TEST Description: This test performs a token bi-directional DMA transfer between public memory and main memory (each direction). This test also does the main memory sizing that is reported in section 12 of the DEADSTART list.
Page 448 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 11) INITIALIZE GATE ARRAYS WITH SCAN SET STRING SPIN Description: SCAN SET is a function of all gate arrays (except IOP) that allows all internal flip-flops and registers to be tied together in a 1 bit serial string that forms a long shift register.
Page 449 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 12) MAIN MEMORY SIZING Description: This section is just a report of the MAIN MEMORY size that was calculated from the IOP0 test. Most systems are configured with 1 MEG x 40 bits of MAIN MEMORY (2 stacks high on the Maxi Card).
Page 450 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 Failure to recognize the DGIOP means the the DGIOP identification code was not read from public memory. Failure points are: 1) Bad DGIOP cable / cable not or improperly connected to HIB. IF IMPROPERLY CONNECTED, EXTENSIVE DAMAGE TO DGIOP WILL RESULT.
Page 451 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 1-3 DEADSTART EXAMPLES The following examples illustrate how board failures effect the DEADSTARTS results. These examples were obtained by removing the indicated board and running DEADSTARTS. They may prove useful if you encounter similar failures when running Deadstarts.
Page 452 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 *** NO IOC BOARD *** *** Deadstart Program (DS) *** Revision 1.05 Configuration Information Processor Type = ST-X 01 Compute Head(s) 02 Back Projector Board(s) ACU Rounding Mode = ST-100 SMP MUX NOT PRESENT Main Memory 1.0 Mega words...
Page 453 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 *** NO PUBLIC MEMORY BOARD *** *** Deadstart Program (DS) *** Revision 1.05 Configuration Information Processor Type = ST-X 01 Compute Head (s) 02 Back Projector board(s) ACU Rounding Mode = ST-100 SMP MUX NOT PRESENT Main Memory 1.0 Mega words...
Page 454 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 *** Deadstart Program (DS) *** Revision 1.05 *** NO DASIOP BOARD *** Configuration Information Processor Type = ST-X 01 Compute Head (s) 02 Back Projector board(s) ACU Rounding Mode = ST-100 SMP MUX NOT PRESENT Main Memory 1.0 Mega words...
Page 455 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 *** NO ACP BOARD *** *** Deadstart Program (DS) *** Revision 1.05 Configuration Information Processor Type = ST-X 01 Compute Head (s) 02 Back Projector board(s) ACU Rounding Mode = ST-100 SMP MUX NOT PRESENT Main Memory 1.0 Mega words...
Page 456 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 *** NO CACHE MEMORY BOARD *** *** Deadstart Program (DS) *** Revision 1.05 Configuration Information Processor Type = ST-X 01 Compute Head(s) 02 Back Projector board(s) ACU Rounding Mode = ST-100 SMP MUX NOT PRESENT Main Memory 1.0 Mega words...
Page 457 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 IOP’s are = DAS CHI --- *** Deadstarts Complete *** *** NO BPC BOARD *** *** Deadstart Program (DS) *** Revision 1.05 Configuration Information Processor Type = ST-X 01 Compute Head(s)
Page 458 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 *** NO BP1 BOARD *** *** Deadstart Program (DS) *** Revision 1.05 Configuration Information Processor Type = ST-X 01 Compute Head(s) 02 Back Projector board(s) ACU Rounding Mode = ST-100 SMP MUX NOT PRESENT Main Memory 1.0 Mega words...
Page 459 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 *** NO MAIN MEMORY BOARD *** *** Deadstart Program (DS) *** Revision 1.05 Configuration Information Processor Type = ST-X 01 Compute Head(s) 02 Back Projector board(s) ACU Rounding Mode = ST-100 SMP MUX NOT PRESENT Main Memory 1.0 Mega words...
Page 460 Deadstarts and should NOT be used. CAUTION: DO NOT RUN RAPI IN PLACE OF UPAP FOR SETTING MODE BITS. GE SOFTWARE IS TESTED WITH UPAP, AND REVISIONS HAVE TAKEN PLACE WITH REGARDS TO DEADSTART MODE BITS. THE PROPER MICROCODE MAY NOT BE DOWNLOADED WITH RAPI.
Page 461 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 6-5 COMMUNICATIONS FAILURES AND THEIR SOLUTIONS Reboot and bring to “R” Level. If system will not come up to “R”, remove HIB and try again. If system comes up to ”R” with the HIB removed, replace the HIB.
Page 462 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 THIS PAGE LEFT BLANK INTENTIONALLY 8-6-24...
Page 463 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 6-6 UPAP FAILURES AND SOLUTIONS BMC/ERCC, BMC Cables, BMC Terminator, ZSLMM - failure on parallel write of main memory - BMC Parity DIP Switch (on HIB), HIB, DGIOP, or Capacitor C94 ON...
Page 464 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 6-8 COMMON KERNEL ABORT CODES AND THEIR SOLUTIONS A kernel abort trap (KAT) is an indication that the AP has detected a failure in its internal hardware, (e.g. a parity error on a data transfer between two memories).
Page 465 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 All ”bug check” error codes produced by the slave APM operating system that reference the ACP or SMP are caused by the ACP or SMP not running, acontrol store parity error, or the parameter load sequencer error condition.
Page 466 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 10303 283F MPSESR SMP, MMC SMP macro (FPSMM2M) timed out while moving main memory to main memory. (ESR read main) 10304 2840 MPSESR SMP, MMC SMP macro (FPSMM2M) timed out while moving...
Page 467 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 0068 MPKERNL MASTER, PM, IOC Load error memory overwrite. 0069 MPKERNL MASTER, PM, IOC IORP bounds error on QUE call. AMPKERNL MASTER, PM, IOC IORP bounds error on QUEW call.
Page 468 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 01F7 MPIOUTL CONFIG. FILE ERROR, MASTER, PM Insufficient memory for short IORP’s (master). 01F8 MPIOUTL CONFIG. FILE ERROR, MASTER, PM Insufficient memory for long IORP’s (master). 01F9 MPIOUTL CONFIG. FILE ERROR, MASTER, PM Insufficient memory for buffers (master).
Page 469 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 02CD MPIBMCM IOP, IOC, PM, MMC IOP-5 not responding. 02CE MPIBMCM IOP, IOC, PM, MMC IOP-6 not responding. 02CF MPIBMCM IOP, IOC, PM, MMC IOP-7 not responding. 0320 MPC7CCM BAD APM LOAD, MASTER, PM No memory available to allocate DCB.
Page 470 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 1013 03F5 MPPGCM HOST TO IOP ERRORS, SELF EXPLANATORY IOP-4 not responding 1014 03F6 MPPGCM HOST TO IOP ERRORS, SELF EXPLANATORY IOP-5 not responding 1015 03F7 MPPGCM HOST TO IOP ERRORS, SELF EXPLANATORY...
Page 471 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 3 20106 4E8A MPCBUF BAD APM LOAD, MASTER, PM Illegal FC received. 20200 4EE8 MPDASCM MASTER, PM No memory available. 20201 4EE9 MPDASCM MASTER, PM Device misconfigured. 20202 4EEA MPDASCM MASTER, PM Multible dasiop configured.
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Page 473: Troubleshooting Hints
GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 SECTION 7 TROUBLESHOOTING HINTS INTRODUCTION The purpose of this section is to include troubleshooting procedures for some unique problems that have occurred on the system. The suggestions to the problems have been provided by field engineers and technicians who have, through experience, come into contact with a variety of situations.
Page 474 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 Symptoms The problem exists in a CT9800 HiLight/HTD system. The problem is image artifact streaks. Ten images are taken with raw data. A streak appears in image five. After performing re-reconstruction of all ten images, a good image five appears but a streak appears in a later image.
Page 475 An Imaging Test to Verify ISO Results A scan of the resolution bar pattern section of the GE 46-241852G1 QA phantom provides a good test to verify the proper ISO alignment. Section 12-9-3 of Chapter 4 in the System Manual Direction 18000 describes the scan and analysis for the MTF determination of the system.
Page 476 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 7-5 ZETACO Controller Hanging the System Symptoms The ZETACO optical disk controller can hang the MV7800 CT computer chassis. Troubleshooting Suggestion If the computer chassis is powered up with some peripherals already powered up, a small voltage can appear on the CPU backplane causing the controller’s RAM to remain intact.
Page 477 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 16 7-7 Image Artifacts (Streaks) Symptoms The Scan Enable light is lit on a 9800 Quick, Argus drive and S140 Computer. When the button is pressed nothing happens. The keyboards are locked out and no entries are in the error logs. All OEM diagnostics and related diagnostics are passing.
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Page 479 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 SECTION 8 AUTOTEST and AUTOTSUMMARY Introduction To facilitate identification of whether a center artifact is due to the HiLight Detector, analysis procedures have been developed for you, called AutoTest and AutoSummary. The AutoTest function is described in Chapter 4, Section 13-8.
Page 480 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 AutoSummary Format An example of the AutoTest Summary File is shown below. The first portion of the file contains header information, system name and ID, Qcal dates, etc. Any fields marked ‘not available’ indiate that this information is not contained within th autotest.log file.
Page 481 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 Interpreting AutoSummary Results The final “Detector Result” represents the combined results for each group of scans, for both phantoms. The result will fall into one of the following categories.
Page 482 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 Artifact Troubleshooting Tips There are many system problems that can induce image artifacts. In order for AutoSummary to provide a definitive pass or fail result for the slope detector issues, your system must be in good working order, and any outstanding image quality issues must be resolved.
Page 483 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 ILLUSTRATION A POSITIONING THE DETECTOR 8-8-5...
Page 484 GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM Direction 18000 Rev. 19 4. As shown in Illustration B, the model rating plate is located at the end of the detector. In order to see the rating plate, you must look between the external alignment light and the coronal / internal alignment light box with the detector between 12 and 1 o’clock position.
Page 485: Appendix A Error Codes
GE MEDICAL SYSTEMS CT 9800 WF RELEASE ERRATA Direction 18000 Rev. 17 M.EM ERROR CODE FILE WF Change Improved M.EM Error Code listing. Description WF release provides an enlarged listing of error (IER, ERR, Status) codes (Illustration 1). More software categories (Illustration 1) have been added to the range of error codes.
Page 486 GE MEDICAL SYSTEMS CT 9800 WF RELEASE ERRATA Direction 18000 Rev. 17 ILLUSTRATION 1 SOFTWARE TYPE AND IER CODE RANGES 8-A-2...
Page 487 GE MEDICAL SYSTEMS CT 9800 WF RELEASE ERRATA Direction 18000 Rev. 17 8-A-3...
Page 488 GE MEDICAL SYSTEMS CT 9800 WF RELEASE ERRATA Direction 18000 Rev. 17 ILLUSTRATION 2 IER ERROR CODES LISTED NUMERICALLY 8-A-4...
Page 489 GE MEDICAL SYSTEMS CT 9800 WF RELEASE ERRATA Direction 18000 Rev. 17 8-A-5...
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Page 499 GE MEDICAL SYSTEMS CT 9800 WF RELEASE ERRATA Direction 18000 Rev. 17 8-A-15...
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Page 502 GE MEDICAL SYSTEMS CT 9800 WF RELEASE ERRATA Direction 18000 Rev. 17 8-A-18...
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Page 504 GE MEDICAL SYSTEMS CT 9800 WF RELEASE ERRATA Direction 18000 Rev. 17 8-A-20...
Page 505 GE MEDICAL SYSTEMS CT 9800 WF RELEASE ERRATA Direction 18000 Rev. 17 MGE$2.IR ;[ **** TABLE MANAGER ERROR CODES **** PARAMETER MGENONF = 6000 ;{ TGGC ERROR } SPECIFIC FATAL ERRORS ********* PARAMETER MGEES = 6001 ;{ ES= PPI BPARD ERROR } PARAMETER .MGEHFLT...
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GE CT-9800 Technical Publications

Table of Contents

Chapter 4

Section Title Page

Chapter 6

Table of Contents

Chapter 8

Appendix A ERROR CODES

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