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Canon LBP-1210 Service Manual

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SERVICE
MANUAL
REVISION 0
RY8-13A3-000
JUN. 2002
 
COPYRIGHT
2002 CANON INC.
CANON LBP-1210 REV. 0 JUN. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)

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  • Page 1 SERVICE MANUAL REVISION 0 RY8-13A3-000 JUN. 2002   COPYRIGHT 2002 CANON INC. CANON LBP-1210 REV. 0 JUN. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 Printed in Japan Imprimé au Japon Use of this manual should be strictly supervised to avoid disclosure of confi- dential information. Prepared by PERIPHERAL PRODUCTS QUALITY ADVANCEMENT DIV. PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT. CANON INC. 4202, Fukara, Susono-shi, Shizuoka 410-1196, Japan...

  • Page 3: Chapter 1 Product Information

    This Service Manual contains basic information required for after-sales service of the laser beam printer LBP-1210 (hereinafter referred to as the "printer"). This information is vital to the serv- ice technician in maintaining the high print quality and performance of the printer.
  • Page 4 DTP system This manual was produced on an Apple PowerMacintosh G4/500MHz personal computer and output by a Canon COLOR LASER SHOT LBP-2260PS laser beam printer; final pages were printed on AGFA Selectset avantra 25. All graphics were produced with Macromedia FreeHand (J), and all documents and page layouts were created with QuarkXPress (E).

  • Page 5: Table Of Contents

    SAFETY INFORMATION..1-4 BY THE CUSTOMER ....1-11 A. Handling the Laser/Scanner VII. OPERATION ......1-12 Unit ........1-4 A. Canon Advanced Printing B. Toner Caution...... 1-4 Technology (CAPT)....1-12 C. Ozone Safety ....... 1-4 B. Microsoft Windows NT4.0 ..1-14 IV.
  • Page 6 PREFACE B. Pick-up Roller ...... 3-13 G. Door Switch ......3-18 C. Separation Pad ....3-13 VI. MOTOR / FAN / SOLENOID ..3-19 D. Transfer Charging Roller..3-15 A. Locations......3-19 E. Fixing Film Unit ....3-15 B. Main Motor ......3-20 F.
  • Page 7 CHAPTER 1 PRODUCT INFORMATION FEATURES........ 1-1 INSTALLATION ......1-7 SPECIFICATIONS ...... 1-2 VI. MAINTENANCE AND CHECKS III. SAFETY INFORMATION..1-4 BY THE CUSTOMER ....1-11 IV. PARTS OF THE PRINTER ..1-5 VII. OPERATION ......1-12...

  • Page 9: Features

    (A4) and high resolution of 600 dpi. 2. Employment of Canon Advanced Printing Technology With Canon Advanced Printing Technology, data can be processed within a host computer. This frees the printer from the PDL conversion and image processing, increasing the speed perform- ance and reducing the cost.

  • Page 10: Specifications

    CHAPTER 1 II. SPECIFICATIONS A. Printer 1. Printer Engine 1) Type Desktop page printer 2) Printing method Electrophotography 3) Printing speed (Note1) 14 pages/minute (A4) 4) First print time (Note2) •Face-down 10 seconds or less •Face-up 9.4 seconds or less 5) Wait time (Note3) 8 seconds or less 6) Resolution...
  • Page 11 5. To print duplex manually, uncurl the face-up delivered paper and set it in the multi- purpose tray. 2. Interface controller 1) Printing System Canon Advanced Printing Technology 2) RAM capacity 2 KB 3) Interface Bi-directional 8 bit parallel interface (Centronics specifications) USB interface Specifications are subject to change with product improvement.

  • Page 12: Safety Information

    CHAPTER 1 III. SAFETY INFORMATION A. Handling the Laser/Scanner Unit An invisible laser beam is emitted within the laser/scanner unit. The laser beam can cause eye damage if exposed, so be sure not to disassemble the laser/scanner unit. It is not necessary to adjust the laser/scanner unit in this printer in the filed.

  • Page 13: Parts Of The Printer

    CHAPTER 1 IV. PARTS OF THE PRINTER A. External View 1: Multi-purpose tray 2: Front cover 3: Power on indication LED 4: Face-down tray 5: Rear cover 6: Left cover 7: USB port 8: Parallel port 9: Power receptacle 10: Power switch 11: Right cover 12: Paper size guides 13: Paper trailing edge guide...

  • Page 14: Cross Section

    CHAPTER 1 B. Cross Section 1: Fixing delivery roller 2: Face-down delivery roller 3: Fixing film unit 4: Primary charging roller 5: Laser/scanner unit 6: EP cartridge 7: Pick-up roller 8: Separation pad 9: Developing cylinder 10: Photosensitive drum 11: Transfer charging roller 12: Main motor 13: Pressure roller 14: Interface controller unit...

  • Page 15: Installation

    CHAPTER 1 V. INSTALLATION A. Outline The printer is packaged and shipped from the factory after careful adjustments and strict inspections. To ensure that it performs is intended, it is very important to install the printer it properly. The service engineer should have a complete knowledge of the printer, choose an appropriate location, install the printer according to the proper procedure, and conduct sufficient checks of the printer.
  • Page 16 CHAPTER 1 3. Space Place the printer at a suitable distance from the walls leaving enough room to operate it. (See figure 1-5-1) When placing the printer on a desk, be sure that the desk is large enough to accom- modate the printer's feet (rubber pads) and strong enough to stand its weight.
  • Page 17 CHAPTER 1 C. Notes for Storing and Handling the EP Cartridge The cartridge can be affected by the environment and change over time whether it is still sealed in the box or installed in the printer, regardless of the number of prints. Since the pace at which it changes depends on the installation and storage environments, be very careful in storing and handling the cartridge.
  • Page 18 CHAPTER 1 When the cartridge is removed from the printer, place it in the protection bag or wrap it with a thick cloth to avoid exposing it to light. 3) Keep the cartridge away from computer CRT displays, disk drives, and floppy disks. The magnet in the cartridge can corrupt the data in the memory of your computer or the data on disks.
  • Page 19 CHAPTER 1 VI. MAINTENANCE AND CHECKS BY THE CUSTOMER The customer should do the following maintenances to use the printer in its best condition at anytime. 1. Cartridge Rock the cartridge as necessary or replace it. 2. External cover Clean it as necessary. 3.

  • Page 20: Operation

    VII. OPERATION A. Canon Advanced Printing Technology (CAPT) Canon Advanced Printing Technology (hereafter referred to as CAPT) reduces the processing time and simplifies the operations for printing in the Microsoft Windows environment. The easy operations and speedy printing are supported by the following features of CAPT: •...
  • Page 21 CHAPTER 1 CAPT operates on Microsoft Windows NT4.0, Microsoft Windows 2000/XP, or Microsoft Windows 95/98/Me. The installation is done using the CD-ROM included with this printer. CAPT specifies paper sizes, document sizes, number of copies, and print quality on the com- puter screen.
  • Page 22 CHAPTER 1 B. Microsoft Windows NT4.0 1. Installation of CAPT A Canon Advanced Printing Technology installation disk is packed with this printer. The type and contents of the disc are as follows: Type : • A 5-inch CD-ROM disk Contents : •...
  • Page 23 CHAPTER 1 b. Installation Procedures G Connecting as a Local Printer This section describes how to install CAPT for using the printer as a local printer. Install it to the computer by following the procedures below. For details, see the User’s Manual packed with the printer. 1.
  • Page 24 CHAPTER 1 G Connecting to a Network Printer When used on a network as a network printer, the printer is linked to the computer designated as a network print server and is shared by clients on the network. This section will describe the installation of CAPT on a client computer. For details, refer to the User’s Manual packed with the printer.
  • Page 25 Create a shortcut and then select Properties by following one of the procedures below: 1) To create a shortcut, open the Printers folder, drag the Canon LASER SHOT LBP-1210 icon with the right mouse button to the desktop, and select the Create Shortcut(s) Here. (See the Microsoft Windows NT User’s Guide for details.)
  • Page 26 • Specified tabs used only in the printer driver; Page Setup, Finishing and Quality To open a tab and set the items in the tab, you can click on the tab or move the focus and then press right or left cursor. Canon LASER SHOT LBP-1210 Properties General Scheduling Sharing Security...
  • Page 27 The settings in this tab apply to the entire printer driver. This tab can be opened by clicking the General tab in the Properties dialog box. The General tab is shown in Figure 1-7-4. Canon LASER SHOT LBP-1210 Properties General Ports Scheduling Sharing Security...
  • Page 28 CHAPTER 1 N Print Processor Dialog Box In the Print Processor dialog box, you can specify the print processor and spool data type used for this printer. The Printer Processor dialog box can be opened by clicking on the Print Processor button in the General tab in the Properties dialog box.
  • Page 29 Use this tab to select the port to which the printer is connected. It can be opened by clicking the Ports tab in the Properties dialog box. The ports tab is shown in Figure 1-7-6. Canon LASER SHOT LBP-1210 Properties Ports General...
  • Page 30 CHAPTER 1 N Printer Ports Dialog Box Use this dialog box to add ports to which the printer is to be connected if necessary. It can be opened by clicking the Add Ports button in the Ports tab of the Properties dialog box. The printer Ports dialog box is shown in Figure 1-7-7.
  • Page 31 CHAPTER 1 N Configure LPT Port Dialog Box Use this dialog box to set the time-out period until the computer notifies the user that the print- er does not respond. It can be opened by clicking the Configure Port button in the Ports tab. The configure LPT Port dialog box is shown in Figure 1-7-8.
  • Page 32 Use this tab to schedule a set time for printing, to set printing priorities, and to specify the print data spooling method. It can be opened by clicking the Scheduling tab in the Properties dialog box. The Scheduling tab is shown in Figure 1-7-9. Canon LASER SHOT LBP-1210 Properties Scheduling Sharing General Ports Security Select Forms...
  • Page 33 Use this tab to designate whether or not the printer is shared on the network. It can be opened by clicking on the Sharing tab in the Properties dialog box. The sharing tab is shown in Figure 1-7-10. Canon LASER SHOT LBP-1210 Properties Scheduling Sharing General Ports...
  • Page 34 Use this tab to set the security for the printer such as Permissions, Auditing, and Ownership. It can be opened by clicking the Security tab in the Property dialog box. The security tab is shown in Figure 1-7-11. Canon LASER SHOT LBP-1210 Properties Scheduling Sharing Security Select Forms...
  • Page 35 It can be opened by clicking the Permissions button in the Security tab of the Properties dialog box. The Printer Permissions dialog box is shown in Figure 1-7-12. Printer Permissions Printer: Canon LASER SHOT LBP-1210 Owner: Administrators Name: Administrators Full Control...
  • Page 36 The Printer Auditing dialog box can be opened by clicking the Auditing button in the Security tab of the Properties dialog box. The Printer Auditing dialog box is shown in Figure 1-7-13. PrinterAuditing Printer: Canon LASER SHOT LBP-1210 Cancel Name: Add... Administrators...
  • Page 37 Use this tab to set user defined paper. It can be opened by clicking the Select Forms tab in the Property dialog box. The Select Forms tab is shown in Figure 1-7-14. Canon LASER SHOT LBP-1210 Properties Select Forms General Ports...
  • Page 38 Create a shortcut and then select Default by following one of the procedures below: 1) To create a shortcut, open the Printers folder, drag the Canon LASER SHOT LBP-1210 icon with the right mouse button to the desktop, and select the Create Shortcut(s) Here. (See the Microsoft Windows NT User’s Guide for details.)
  • Page 39 The dialog box consists of 3 tabs shown below. You can click each tab or move the cursor and then press the right or left cursor key to open the tab and make settings. Canon LASER SHOT LBP-1210 Default Page Setup Finishing Quality Figure 1-7-15 (1) Page Setup : Sets items frequently used for general printing.
  • Page 40 CHAPTER 1 • Profile The Profile reads and stores each item of the Page Setup tab, Finishing tab and Quality tab. This performs operations of Add, Edit, and Select. Profile stores up to 50 items for each login user. As it stores in each login user, each Profile cannot be referred among them. If the name of the printer driver is changed to another, all the profiles already registered will be unreadable.
  • Page 41 CHAPTER 1 N Add Profile Dialog Box The Add Profile dialog box adds new Profile. It can be opened by clicking the Add button in the Default dialog box. The Add Profile dialog box is shown in Figure 1-7-18. Add Profile Name : Icon : Comment :...
  • Page 42 CHAPTER 1 N Edit Profile Dialog Box The Edit Profile dialog box edits the Profile. It can be opened by clicking the Edit button in the Default dialog box. The Edit Profile dialog box is shown in Figure 1-7-19. Edit Profile Profile List : (11) Profile01...
  • Page 43 Use this tab to set items frequently used in general printing. The items set in the Page Setup tab can be opened by clicking the Page Setup tab in the Default dialog box. The Page Setup tab is shown in Figure 1-7-20. Canon LASER SHOT LBP-1210 Default Page Setup Finishing Quality Add...
  • Page 44 CHAPTER 1 N View Settings Dialog Box The View Settings dialog box displays information of the settings for each of the tabs. It can be opened by clicking the View Settings button in the Page Setup dialog box. The View Setup dialog box is shown in Figure 1-7-21. View Settings Page Setup Finishing Quality Page Size :...
  • Page 45 CHAPTER 1 N Overlay Dialog Box Use this dialog box to set overlays. It can be opened by clicking the Overly button in the Page Setup dialog box. The Overlay dialog box is shown in Figure 1-7-22. Overlay File Name : (11) c:\WIN95\Desktop\bmp\header.bmp Browse...
  • Page 46 The Finishing tab designates either the print is to be performed in collate or page. The Finishing tab can be opened by clicking on the Finishing tab in the Default dialog box. The Finishing tab is shown in Figure 1-7-23. Canon LASER SHOT LBP-1210 Default Page Setup Finishing Quality Add...
  • Page 47 CHAPTER 1 N Preferences Dialog Box The Preference dialog sets the printing environment. It can be opened by clicking the Preferences button in the Finishing dialog box. The Preferences dialog box is shown in Figure 1-7-24. Preferences Execute printing even when Paper Size Mismatch detected EMF Spooling Cancel Restore Defaults...
  • Page 48 The Quality tab sets image-related items. It can be opened by clicking the Quality tab in the Default dialog box. The Quality tab is shown in Figure 1-7-25. Canon LASER SHOT LBP-1210 Default Page Setup Finishing Quality Add... Profile : Edit...
  • Page 49 CHAPTER 1 N More Options Dialog Box The More Options dialog box sets the printing environment. The More Options dialog box can be opened by clicking the More Options dialog box in the Quality dialog box. The More Options dialog box is shown in Figure 1-7-26. More Options Toner Density : Light...
  • Page 50 Window for setting items frequently used for printers. The Printer Status Window opens when: • You double-click on the Canon LASER SHOT LBP-1210 Status Window icon in the Canon CAPT Tools group. • You left-click on the icon registered in the Indicator area of the task bar.
  • Page 51 CHAPTER 1 Red; Gives warning. (7) Tool bar : Consists of the following 3 buttons: Pause Job Resume Job Delete Job (8) Status bar : Displays the printer port to which the printer is connected. When performing a menu operation, it displays the status of the operation. 1 - 43...
  • Page 52 CHAPTER 1 • Options menu The Options menu sets the status options and ports, and prints a cleaning page. The Option menu is shown on Figure 1-7-28. Canon LASER SHOT LBP-1210 Options Help Status Options... Port Setting... Cleaning Printing Job...
  • Page 53 CHAPTER 1 N Status Options Dialog Box The Status Options dialog box displays the Status Window, and sets the items in the Voice mes- sages. It can be opened by selecting the Status Options command in the Options menu of the Status Window.
  • Page 54 CHAPTER 1 N Port Setting Dialog Box The Port Setting dialog box sets the port(s). The Port Setting dialog box can be opened by select- ing the Port Setting command in the Option menu of the Status Window. It can be opened only when the printer is connected to the local parallel port. The Port Setting dialog box is shown in Figure 1-7-30.
  • Page 55 It does not operate on the Network client computer. <Starting the Trouble Shooter> To start Trouble Shooter, double-click on the Canon LASER SHOT LBP-1210 Trouble Shooter icon in the Canon CAPT Tools group. N Trouble Shooter Dialog Box (start-up) The following dialog box appears when the Trouble Shooter is started.
  • Page 56 CHAPTER 1 Executing the Trouble Shooter by clicking the Yes button verifies the items below: Local Checks ; • Displays the free disk and free memory. • Installed files. • Selected ports. • Registry. • RapidPort communication device driver (Only Microsoft Windows NT/2000.) •...
  • Page 57 N Trouble Shooter Dialog Box (Exiting) Canon LASER SHOT LBP-1210 Trouble Shooter Canon LASER SHOT LBP-1210 on LPT1:[local] settings are correct. Result: Canon LASER SHOT LBP-1210 on LPT1:[local] trouble shooting - 5/5/02 2:19:55 AM Free Disk Space: 23MB Free Memory. 0KB LPT1CECPStandard parallel port All files are expected versions.
  • Page 58 CHAPTER 1 C. Microsoft Windows 2000/XP 1. Installation of CAPT The printer includes the installing disc of Canon Advanced Printing System. The type and con- tents are as follows: Type : • A 5 inch CD-ROM disk Contents : •...
  • Page 59 CHAPTER 1 b. Installation Procedures G Connecting as a Local Printer This section describes how to install CAPT for using this printer as a local printer. Install it by following the procedures below. For details, see the User’s Manual packed with this printer. 1.
  • Page 60 CHAPTER 1 15. End of Installation When the installation is completed, restart Microsoft Windows. If the printer is connected to the printer, the test page dialog box will appear to ask whether to print a test page. Print a test page and confirm the installation has been successful. 1 - 52...
  • Page 61 CHAPTER 1 G Connecting to a Network Printer When used on a network as a network printer, the printer is linked to the computer designated as a network print server and is shared by clients on the network. This section will describe the installation of CAPT on a client computer. For details, refer to the User’s Manual packed with the printer.
  • Page 62 Create a shortcut and then select Properties by following one of the procedures below: 1) To create a shortcut, open the Printers folder, drag the Canon LASER SHOT LBP-1210 icon with the right mouse button to the desktop, and select the Create Shortcut(s) Here. (See the Microsoft Windows 2000/XP User’s Guide for details.)
  • Page 63 • Specified tabs used only in the printer driver To open a tab and set the items in the tab, you can click on the tab or move the focus and then press right or left cursor. Canon LASER SHOT LBP-1210 Properties General Sharing...
  • Page 64 This tab sets the forms defined by the user. This tab can be opened by clicking the Select Forms tab in the Properties dialog box. The Select Forms tab is shown in Figure 1-7-35. Canon LASER SHOT LBP-1210 Properties General Sharing...
  • Page 65 Create a shortcut and then select Printing Preferences by following one of the procedures below: 1) To create a shortcut, open the Printers folder, drag the Canon LASER SHOT LBP-1210 icon with the right mouse button to the desktop, and select the Create Shortcut(s) Here. (See the Microsoft Windows 2000/XP User’s Guide for details.)
  • Page 66 CHAPTER 1 The Printing Preferences is configured with the following three tabs shown in Figure 1-7-36: Canon LASER SHOT LBP-1210 Printing Preferences Page Setup Finishing Quality Figure 1-7-36 (1) Page Setup : Set the items frequently used for general printing.
  • Page 67 You can sets the printer-specified items using the Status Window. The Status Window opens when: • You double-click on the Canon LASER SHOT LBP-1210 Status Window icon in the Canon CAPT Tools Group. • You left-click on the icon registered in the Indicator area of the task bar.
  • Page 68 CHAPTER 1 3. Trouble Shooter When troubles occur in the printer, the Trouble Shooter checks the Microsoft Windows 2000/XP configuration settings. If misconfiguration is found, the Trouble Shooter reports it to the user, and self-corrects it if possible. The Trouble Shooter cannot detect problems with the hardware such as printer cable and parallel port failures.
  • Page 69 CHAPTER 1 D. Microsoft Windows 95/98/Me 1. Installation of CAPT A Canon Advanced Printing System disk is packed with this printer. Type and contents are as follows: Type : • A 5 inch CD-ROM disk Contents : • CAPT driver •...
  • Page 70 CHAPTER 1 b. Installation Procedures G Connecting the printer as a local server This section describes how to install CAPT for using the printer as a local printer. Install it to the computer by following the procedures below. For details, see the User’s Manual packed with this printer. 1.
  • Page 71 CHAPTER 1 G Connecting to a Network Printer When used on a network as a network printer, the printer is linked to the computer designated as a network print server and is shared by clients on the network. This section will describe the installation of CAPT on a client computer. For details, refer to the User’s Manual packed with the printer.
  • Page 72 How to open the Properties varies in each application. See the application manual. From the Microsoft Windows Shortcut 1) To create a shortcut, open the Printers folder, drag the Canon LASER SHOT LBP-1210 icon to the desktop pressing the CTRL key, (See the Microsoft Windows 95/98/Me User’s Guide for details.)
  • Page 73 • Specified tabs used only in the printer driver; Page Setup, Finishing and Quality To open a tab and set the items in the tab, you can click on the tab or move the focus and then press right or left cursor. Canon LASER SHOT LBP-1210 Properties General Details Sharing...
  • Page 74 Use this tab to set items frequently used in general printing. The Page Setup tab can be opened by clicking the Page Setup tab in the Properties dialog box. The Page Setup tab is shown in Figure 1-7-40. Canon LASER SHOT LBP-1210 Properties Page Setup Finishing Quality General Details Sharing Add...
  • Page 75 CHAPTER 1 N Custom Paper Size Dialog Box The Custom Paper Size dialog sets user defined paper. The Paper Size dialog box can be opened by clicking on the Custom Paper Size button in the Page Setup dialog box. The Custom Paper Size dialog box is shown in Figure 1-7-41. Custom Paper Size Setting Costom Paper List : Form 1...
  • Page 76 The Finishing tab specifies whether printing is performed in collate or page. The Finishing tab can be opened by clicking on the Finishing tab in the Properties dialog box. The Finishing tab is shown in Figure 1-7-42. Canon LASER SHOT LBP-1210 Properties Page Setup Finishing Quality General Details Sharing Add...
  • Page 77 CHAPTER 1 N Preferences Dialog Box The Preferences dialog box sets the printing environment. It can be opened by clicking the Preferences button in the Finishing dialog box. The Preferences dialog box is shown in Figure 1-7-43. Preferences Execute printing even when Paper Size Mismatch detected Cancel Restore Defaults Help...
  • Page 78 The Quality tab sets items for printing image. It can be opened by clicking the Quality tab in the Properties dialog box. The Quality tab is shown in Figure 1-7-44. Canon LASER SHOT LBP-1210 Properties Page Setup Finishing Quality General Details Sharing Add...
  • Page 79 You can set the printer-specified items using the Status Window. The Status Window opens when: • You double-click on the Canon LASER SHOT LBP-1210 Status Window icon in the Canon CAPT Tools Group. • You left-click on the icon registered in the Indicator area of the task bar.
  • Page 80 CHAPTER 1 3. Trouble Shooter When troubles occur in the printer, the Trouble Shooter checks the Microsoft Windows 95/98/Me configuration settings. If misconfiguration is found, the Trouble Shooter reports it to the user, and self-corrects it if possible. The Trouble Shooter cannot detect problems with the hardware such as printer cable and parallel port failures.
  • Page 81 CHAPTER 1 E. Printing Environment Setting and Test Printing 1. Printing Environment Setting The tables below show the printing environment that can be set from the CAPT dialog boxes. Note: The values in bold are the default values at the time of shipment from the factory. Table 1-7-1 Page Setup tab Overlay tab...
  • Page 82 (normally "Canon LASER SHOT LBP-1210.") ICROSOFT INDOWS (3) Printer model: Name of the printer (in case of this printer "Canon LASER SHOT LBP-1210.") (4) Color support: Whether or not color printing is supported (in case of this printer, "No.") Congratulations! (5) Port name(s): Name of the port to which the printer is connected.
  • Page 83 (1) Printer name: Name of the printer driver specified when the printer was installed Windows (normally "Canon LASER SHOT LBP-1210.") Printer Test Page (2) Printer model: Name of the printer (in case of this printer "Canon LASER SHOT LBP-1210.") Microsoft Windows (3) Driver name: File name of the graphics driver.
  • Page 84 CHAPTER 1 1 - 76...
  • Page 85 CHAPTER 2 OPERATION AND TIMING 1. This chapter describes the printer functions, the relationships between mechanisms and cir- cuits, and the timing of operations. Mechanical linkages are indicated by black and white lines ( ), the flow of control signals by solid arrows ( ), and the flow of groups of signals by outline arrows ( 2.

  • Page 87: Functions

    CHAPTER 2 I. BASIC OPERATION A. Functions Printer functions can be divided into five groups: the engine control system, video control sys- tem, image formation system, laser/scanner system, and paper pick-up/feed system. To external device (host computer, etc.) VIDEO CONTROL SYSTEM Face-down tray Interface controller PCB LASER/SCANNER SYSTEM...
  • Page 88 CHAPTER 2 B. Basic Operation Sequences The operation sequences of this printer are controlled by the microprocessor on the engine con- troller PCB. The purposes of periods from power ON until the main motor stops after the com- pletion of printing are described below. See the appendix for timing chart. Table 2-1-1 Periods Purposes...
  • Page 89 CHAPTER 2 C. Power ON Sequence The sequence from power-ON until the printer enters the STANDBY mode is shown below. 1) Power-ON 2) CPU initialization 3) Video interface communication start 4) Residual paper check Checks each sensor for the detection of paper presence 5) Main motor initial rotation 6) Fixing heater initial drive Drives for 0.5 seconds.

  • Page 90: Outline

    CHAPTER 2 II. ENGINE CONTROL SYSTEM A. Outline This system controls the laser/scanner system, image formation system, and pick-up/feed sys- tem according to commands from the video control system. These systems are controlled by the engine controller PCB. The figure below illustrates the block diagram of this system. LASER/SCANNER ENGINE CONTROL SYSTEM SYSTEM...

  • Page 91: Outline

    CHAPTER 2 B. Engine Controller 1. Outline The engine controller controls the operational sequences of this printer. It consists of the fixing control circuit, high-voltage power supply circuit, low-voltage power supply circuit and fan motor drive circuit. According to instructions from the CPU (IC201), the fixing control circuit performs temperature control for the fixing unit, whereas the high-voltage power supply circuit generates high-voltage power.
  • Page 92 CHAPTER 2 2. CPU (IC201) The CPU is an 8-bit-single-chip microcomputer IC. It comes with built-in ROM and RAM, and controls the following operations according to the control programs stored in the ROM. 1) Printer sequence 2) Communications with the interface controller 3) High-voltage power supply circuit 4) Laser/scanner 5) Sensors...
  • Page 93 CHAPTER 2 3. Fixing Control Circuit a. Outline Thermal fuse (FU1132) Fixing film unit Main thermistor Sub thermistor (TH701) (TH702) Fixing heater Pressure (H701) roller Engine controller PCB +3.3V FU101 Fixing heater drive circuit RL101 Q101 AC input SSR101 Fixing heater safety circuit +3.3V +3.3V...
  • Page 94 CHAPTER 2 The thermal fuse (FU1132) is installed in the center of the fixing heater. When the fixing heater temperature rises abnormally, the fuse melts and interrupts power to the fixing heater. The temperature of the fixing unit, structured with the above mentioned parts, is controlled by the fixing control circuit on the engine controller on the instruction from the CPU (IC201).
  • Page 95 CHAPTER 2 Table 2-2-1 Target temperature Print speed (page/min.) Paper size recognition Normal Small Normal Small 271.4 - 249 249 - 127 Paper length (mm) 356 - 271.4 271.4 - 127 356 - 271.4 Plain Paper 170 - 180˚C Transparencies 150˚C 170˚C Special Paper 1...
  • Page 96 CHAPTER 2 If the temperature of the thermal fuse (FU1132) exceeds about 228 °C due to the abnormal tem- perature rise of the fixing heater, the thermal fuse melts, thus power to the fixing heater is inter- rupted. d. Fixing unit failure detection The CPU assesses a fixing unit failure under the conditions a) to g) indicated below and it per- forms the following three procedures: 1.
  • Page 97 CHAPTER 2 4. High-Voltage Power Supply Circuit a. Outline Engine controller PCB High-voltage power supply circuit IC201 Primary charging bias circuit Developing cylinder IC301 DC voltage J305 Primary generation PRDCC charging /DCPWM circuit roller J304 Combined IC202 IC301 Fixing AC voltage PRACC /PRAC film unit...
  • Page 98 CHAPTER 2 The transfer charging bias circuit generates positive or negative DC voltage applies either of them to the transfer charging roller. These circuits are controlled by the CPU (IC201) on the engine controller. The following section discusses each of the circuits. b.
  • Page 99 CHAPTER 2 4) Fixing bias generation The fixing bias prevents toner from adhering to the fixing film. This bias is generated by divid- ing the primary charging DC bias. At the timing of primary charging DC bias application to the primary charging roller, the bias is applied to the fixing film through the pressure roller.
  • Page 100 CHAPTER 2 5. Low-voltage Power Supply Circuit a. Outline Engine Controller PCB Inlet Low-voltage power supply circuit Fixing heater Relay Triac (RL101) Power switch (SW101) Fixing heater safety circuit Fuse (FU101) High-voltage power supply circuit Noise DOSNS filter (IC201) Door switch (SW301) Noise +24U...
  • Page 101 CHAPTER 2 AC power is supplied to the low-voltage power supply circuit on the engine controller by turn- ing ON the power switch (SW101). The AC power is converted into +24VDC, +5VDC, and +3.3VDC in this circuit, required in the printer.
  • Page 102 CHAPTER 2 6. Fan motor control circuit This circuit controls the fan motor on the instruction from the CPU. The circuit is illustrated below. Engine Controller PCB Air intake fan Fan motor drive circuit +24V IC201 J203-1 FANON J203-2 +3.3V J203-3 FLOCK Figure 2-2-6...
  • Page 103 CHAPTER 2 7. Engine controller input/output Engine controller PCB +3.3V Delivery paper sensor PCB PS401 J410-1 J210-1 Delivery paper sensor /POSNS "L" when the sensor detects paper. +3.3V Top of page sensor PCB PS402 J411-1 J211-1 Top of page /PISNS "L"...
  • Page 104 CHAPTER 2 Engine controller PCB Laser/scanner unit Intermediate PCB J201 J907 J802 J905 +24V M801 The scanner motor accelerates when "L." /ACC Scanner motor /DEC The scanner motor decelerates Scanner when "L." motor driver circuit J801 J901 +3.3V Laser diode CNT0 Laser control signals See Page 2-27 for details.
  • Page 105 CHAPTER 2 Fixing unit Engine controller PCB Fixing film unit Thermal fuse J1102-1 J102-1 FU1132 H701 Fixing heater Main thermistor J206-2 FSRTH As the fixing heater temperature rises, the voltage increases. TH701 Sub thermistor As the fixing heater temperature rises, FSRSTH the voltage decreases.
  • Page 106 CHAPTER 2 III. VIDEO CONTROL SYSTEM A. Outline The video control system is configured with the interface controller, which sends various instruc- tions to the engine controller in the engine control system through the video interface, and the intermediate PCB. The video interface implements communications between the interface con- troller and the engine controller.
  • Page 107 CHAPTER 2 Printer Interface controller Intermediate PCB Engine controller PCB +24V J907-4 J201-19 J2-1 J902-12 +3.3V -8/-22 -1/-15 +3.3V IC201 BDO:HC /RESET /RESETO SCO:HC /SCLK SCLK CNT0 /CNT0 CNT1 /CNT1 /BDI /BDI /ACC /ACC /DEC /DEC To external device (host computer, etc.) J905-3...
  • Page 108 CHAPTER 2 B. Video Interface Signals Interface controller Engine controller PCB Intermediate PCB J2-8 J902-5 J907-11 J201-12 /RESET /SCLK Laser driver J901-8 /VDO J801-3 Figure 2-3-2 • /BD (laser beam detection) signal This signal is a synchronous signal of the horizontal scanning (main scanning): it is a reference signal of a laser beam in the horizontal direction.
  • Page 109 CHAPTER 2 This signal is sent to the engine controller from the BD sensor on the laser driver PCB through the intermediate PCB. Refer to “IV. LASER/SCANNER SYSTEM” for more details. • /VDO / VDO (video) signals These are differential signals output from the interface controller to the laser driver PCB through the intermediate PCB.
  • Page 110 CHAPTER 2 C. Operation Unlike the conventional video interfaces, which use a specified signal line for each signal, the video interface of this printer uses command status. When the power is turned ON, the printer enters a wait (WAIT) state. After this state, the engine controller sends a ready status that indicates the printer is ready to print.
  • Page 111 CHAPTER 2 D. Interface Controller PCB 1. Outline The interface controller receives print information from an external device such as a host com- puter through an interface cable. Print information is divided into two types: CAPT commands used for the printer status and information on the printer, and dot data that is converted from the resource-typed print data by the host computer.
  • Page 112 CHAPTER 2 Figure 2-3-3 INTENDP0 X'tal INTSETUP 48MHz BDOUT_N EEPROM WR_N RD_N USB I/F AD[7 .. 0] MD[15 .. 0] CPUCLK RAMWR_N INTSTS RAS_N CPURST_N DRAM CAS_N SCIN DRA[9 .. 0] SCLKIN SCOUT ASIC USB RST nSELIN nERROR X'tal nINIT 16.349637MHz nAUTOFD SELECT...
  • Page 113 CHAPTER 2 E. Other Functions 1. Cleaning page sequence This printer has the cleaning page sequence to remove dirt on the pressure roller in the fixing unit. It is implemented by a command sent from the interface controller. Receiving a cleaning page command from the interface controller, the engine controller picks up a cleaning sheet.
  • Page 114 CHAPTER 2 IV. LASER/SCANNER SYSTEM A. Outline The laser/scanner unit is structured with the laser driver, the scanner motor, etc. It is con- trolled by the signals input from the engine controller and the interface controller. The laser driver forces the laser diode to emit according to the LASER CONTROL (CNT0, CNT1) signals output from the engine controller and the VIDEO (/VDO, VDO) signals output from the interface controller.
  • Page 115 CHAPTER 2 Interface controller PCB /VDO Engine controller PCB /BDI CNT0 CNT1 /ACC /DEC Intermediate PCB Cylindrical lens Scanning mirror BD sensor Laser driver PCB Mirror Scanner motor Focusing lens Photosensitive dram Figure 2-4-1 2 - 29...

  • Page 116: Laser Control Circuit

    CHAPTER 2 B. Laser Control circuit 1. Outline Laser driver PCB Engine controller PCB Intermediate PCB +3.3V J201-15 J907-8 J901-3 J801-8 BD sensor /BDI /BDI /BDI IC201 (laser diode) (photodiode) /CNT1 CNT1 CNT1 Comparator /CNT0 CNT0 CNT0 /BDO:HC Sample hold circuit Logic circuit...
  • Page 117 CHAPTER 2 sample mode (in which the APC is performed), forcing the LD to emit. The intensity of the LD is detected by the photo diode (PD) and fed back to the sample hold circuit through the comparator. The laser drive IC controls the output current of the drive circuit to bring the fed-back laser intensity to its target value set in the IC.
  • Page 118 CHAPTER 2 4. Horizontal sync control This control determines the writing position in the horizontal direction on an image. The CPU generates the UNBLANKING signal based on the BD INPUT (/BDI) signal sent from the BD sensor installed in the laser/scanner unit. During this unblanking period, the CPU con- trols the LASER CONTROL signals to force the laser diode (LD) to emit.

  • Page 119: Scanner System

    CHAPTER 2 C. Scanner System Figure 2-4-4 shows the scanner motor control circuit. Engine controller PCB Intermediate PCB Laser/scanner unit J201-16 /BDI J907-7 J901-7 J801-7 BD sensor IC201 +24VA +24VA J201-19 J907-4 J905-1 J802-1 Scanner driver IC J201-22 /ACC J907-1 J905-2 J802-2 /ACC...
  • Page 120 CHAPTER 2 The CPU determines a failure or an error under the following conditions and notifies it to the interface controller. 1) Scanner failure If the /BDI signal is not detected within 1.5 seconds after the scanner motor is forcibly driv- en, the CPU extends the time to 120 seconds.

  • Page 121: Image Formation System

    CHAPTER 2 V. IMAGE FORMATION SYSTEM A. Outline The image formation system is the central hub of the printer. This system consists of the car- tridge, transfer charging roller, fixing unit, etc. When a print command is sent from the interface controller, the engine controller drives the main motor to rotate the photosensitive drum, developing cylinder, primary charging roller, transfer charging roller, and pressure roller.

  • Page 122: Print Process

    CHAPTER 2 B. Print Process A major portion of the image formation system is contained in the cartridge as shown in Figure 2-5-2. Laser beam Primary charging roller Cleaning blade Cartridge Photosensitive drum Static charge eliminator Blade Transfer charging roller Developing cylinder Figure 2-5-2 This printer uses a double-layered seamless drum shown in Figure 2-5-3.
  • Page 123 CHAPTER 2 Electrostatic latent image formation block 2. laser beam exposure Paper path Direction of drum rotation 1. Primary charging 3. Developing Developing block Drum cleaning 7. Drum cleaning block Paper delivery Fixing block Pick-up 5. Separation 4. Transfer 6. Fixing Transfer block Figure 2-5-4 1.
  • Page 124 CHAPTER 2 Step 1: Primary charging Primary chargingroller AC bias Photosensitive drum DC bias Figure 2-5-6 In preparation for the latent image formation, a uniform negative potential is applied to the pho- tosensitive drum surface. For primary charging, the printer uses the charging method which directly charges the drum.
  • Page 125 CHAPTER 2 Step 3: Developing Blade Photosensitive drum Stirrer Cylinder AC bias Developing cylinder Magnet DC bias Figure 2-5-8 Note: Charges in the exposed areas of the photosensitive drum are shown as positive in the figure, even though they are actually negative. It means that the photosensitive drum potential is higher as compared with that of the cylinder.
  • Page 126 CHAPTER 2 (1460Vp-p) varies with the DC bias voltage. The change in the DC bias changes the potential difference between the cylinder and drum so the density of the print can be adjusted. The adjustment is made through a command from the interface controller. This printer has a stirring mechanism in the cartridge to ensure that toner is applied smooth- ly to the cylinder.
  • Page 127 CHAPTER 2 As the toner image transferred onto the paper in the transfer block is adhered only by electro- static attraction, even a light touch will smear the image. The toner particles are fused to the paper to make a permanent image by applying pressure and heat to the paper and toner.
  • Page 128 CHAPTER 2 5. Drum cleaning block In the transfer block, not all the toner is transferred to the paper, but some remains on the pho- tosensitive drum. In this block, the residual toner is cleaned off so that the next print image will be clear and distinct.
  • Page 129 CHAPTER 2 This page intentionally left blank 2 - 43...

  • Page 130: Pick-Up/Feed System

    CHAPTER 2 VI.PICK-UP/FEED SYSTEM A. Outline This printer utilizes two paper pick-up sources, the cassette and multi-purpose tray, and two delivery slots, the face-up tray and face-down tray. Print paper, loaded in either the universal paper feed tray or manual the feed tray, is picked up by the pick-up roller.
  • Page 131 CHAPTER 2 Engine controller PCB Face-up delivery roller Face-down delivery roller Fixing film unit Photosensitive PS401 Face-up drum cover Multi-purpose tray Pressure Pick-up roller Cassette roller Transfer charging roller PS402 Separation pad PS201 M001 SL001 PS201: Paper out sensor PS401: Delivery paper sensor PS402: Top of page sensor M001: Main motor SL001: Pick-up solenoid...

  • Page 132: Pick-Up/Delivery

    CHAPTER 2 B. Pick-up/delivery The main motor (M001) starts rotating in 0.5 seconds after the engine controller receives a print command from the interface controller. This drives all the rollers other than the pick-up roller. When the printer enters the initial rotation ready state (see Note), the pick-up solenoid (SL001) is turned ON for 0.2 seconds.

  • Page 133: Paper Jam Detection

    CHAPTER 2 C. Paper Jam Detection The following paper sensors are installed to detect paper presence and paper feed condition. • Top of page sensor (PS402) • Delivery paper sensor (PS401) The CPU determines a paper jam by checking whether or not paper is present on the sensor at the timing stored in the CPU.
  • Page 134 CHAPTER 2 2 - 48...
  • Page 135 CHAPTER 3 THE MECHANICAL SYSTEM PREFACE........3-1 SENSORS / SWITCHES ..... 3-17 EXTERNALS ......3-2 VI. MOTOR / FAN / SOLENOID ..3-19 III. MAIN UNITS ......3-7 VII. PCBs......... 3-22 IV. MAIN PARTS ......3-12...
  • Page 137 CHAPTER 3 I. PREFACE This chapter describes disassembly and reassembly procedures of the printer. The service technician is to find the cause of the failure according to the "Chapter 4 Troubleshooting" and to follow the disassembly procedures in this chapter to replace the defec- tive part(s).
  • Page 138 CHAPTER 3 II. EXTERNALS A. Locations ➃ ➆ ➅ ➁ ➀ ➂ ➄ Rear cover unit Right cover Left cover unit Top cover unit Front cover Cartridge cover unit Front guide unit Figure 3-2-1 3 - 2...
  • Page 139 CHAPTER 3 B. External Covers <Note for reassembly> 1. Rear cover unit When reassembling the rear cover unit, be 1) Open the face-up cover. sure that the retainer for the interface con- 2) Remove the two screws and unhook the nector with the rear cover unit.
  • Page 140 CHAPTER 3 3. Left cover unit 5. Front cover 1) Remove the rear cover unit. 1) Remove the rear cover unit. 2) Remove the screw and unhook the 2) Remove the right cover. claw. Remove the left cover unit. 3) Remove the left cover unit. 4) Remove the two screws.
  • Page 141 CHAPTER 3 6) Unhook the left claw and remove the 7. Front guide unit front cover. 1) Remove the cartridge cover unit. 2) Remove the two screws. ➀ ➁ ➀ ➀ Left claw ➁ Front cover ➀ Screws Figure 3-2-10 Figure 3-2-12 6.
  • Page 142 CHAPTER 3 4) Unhook the two left claws and remove the front guide unit. ➁ ➀ ➀ Left claws ➁ Front guide unit Figure 3-2-14 3 - 6...
  • Page 143 CHAPTER 3 III. MAIN UNITS 7) Remove the cables from the cable guide. 8) Remove the screw. A. Laser/Scanner Unit 9) Unhook the four claws and remove the 1) Remove the top cover unit. lid. 2) Open the cartridge cover. 10) Disconnect the connector inside.

  • Page 144: Pick-Up Unit

    CHAPTER 3 B. Pick-up Unit 7) Remove the two TP screws and the 1) Remove the engine controller unit (page three tapping screws. 3-23; 1-8). 2) Remove the fixing unit (page 3-9; 1-2). 3) Remove the air intake fan and the pick- up solenoid.

  • Page 145: Fixing Unit

    CHAPTER 3 8) Remove the intermediate PCB (page 3- C. Fixing Unit 23; 1-3). 1) Remove the rear cover unit, right cover, 9) Remove the TP screw and the left cor- left cover unit, and top cover unit. ner cover. 2) Remove the interface PCB unit (page 3- 10) Remove the three TP screws and the 23;...
  • Page 146 CHAPTER 3 5) Remove the screw with washer. 8) Remove the screw with washer. 6) Remove the two TP screws and the 9) Remove the two TP screws and the plate. plate. 7) Remove the tapping screw. 10) Remove the tapping screw. ➀...

  • Page 147: Left Side Plate Unit

    CHAPTER 3 12) Disconnect the connector and remove D. Left Side Plate Unit the cables from the cable guide. 1) Remove the pick-up unit (page 3-8; 1- Remove the fixing unit. 11). ➃ ➁ E. Right Side Plate Unit 1) Remove the pick-up unit (page 3-8; 1- 2) Unhook the claw and remove the gear.

  • Page 148: Main Parts

    CHAPTER 3 IV. MAIN PARTS A. Locations ➃ ➀ ➄ ➂ ➁ 1: Pick-up roller 2: Separetion pad 3: Transfer charging roller 4: Fixing film unit 5: Pressure roller Figure 3-4-1 3 - 12...
  • Page 149 CHAPTER 3 B. Pick-up Roller C. Separation Pad 1) Open the right and left claws outward. 1) Remove the rear cover unit, right cover, left cover unit, and then the pick-up ➀ tray. 2) Remove the screw. ➀ ➀ Right and left claws ➀...
  • Page 150 CHAPTER 3 4) As pressing down the sensor lever, arm, <Note for reassembling> and the claw, slide the pick-up roller When reassembling the separation pad, be unit in the direction of the arrow. sure the projections on the back of the pad aligns with the holes on the holder.
  • Page 151 CHAPTER 3 D. Transfer Charging Roller E. Fixing Film Unit 1) Open the cartridge cover. 1) Remove the fixing unit (page 3-9; 1-12). 2) Unhook the two claws and remove the 2) Remove the two screws and the face- transfer charging roller. down delivery roller unit.
  • Page 152 CHAPTER 3 6) Turn the spring retainer in the direc- F. Pressure Roller tion of the arrow as pressing it down 1) Remove the fixing film unit (page 3-15; and remove it and the spring. 1-7). 7) Remove the plate and the fixing film 2) Unhook the claw and remove the gear.
  • Page 153 CHAPTER 3 V. SENSORS/SWITCHES A. Locations ➃ ➁ ➂ ➀ ➄ ➅ 1: Paper out sensor (PS201) 2: Delivery paper sensor (PS401) 3: Top of page sensor (PS402) 4: Power switch (SW101) 5: Test print switch (SW201) 6: Door switch (SW301) Figure 3-5-1 3 - 17...
  • Page 154 CHAPTER 3 B. Paper Out Sensor 1) Remove the engine controller unit (page 3-23; 1-8). C. Delivery Paper Sensor 1) Remove the delivery paper sensor PCB (page 3-25; 1-5). D. Top of Page Sensor 1) Remove the top of page sensor PCB (page 3-25;...
  • Page 155 CHAPTER 3 VI.MOTOR/FAN/SOLENOID A. Locations ➀ ➁ ➂ 1: Main motor (M001) 2: Air intake fan (FAN1) 3: Pick-up solenoid (SL001) Figure 3-6-1 3 - 19...
  • Page 156 CHAPTER 3 B. Main Motor C. Air Intake Fan Unit 1) Remove the rear cover unit, right cover, 1) Remove the rear cover unit, right cover, and left cover unit. and left cover unit. 2) Remove the engine controller unit (page 2) Remove the engine controller unit (page 3-23;...
  • Page 157 CHAPTER 3 D. Pick-up Solenoid 1) Remove the rear cover unit, right cover, and left cover unit. 2) Remove the engine controller unit (page 3-23; 1-8). 3) Remove the cables from the cable guide. ➁ ➀ ➀ Cable guide ➁ Cables Figure 3-6-5 4) Remove the screw and the pick-up sole- noid.
  • Page 158 CHAPTER 3 VII. PCBs A. Locations ➂ ➃ ➀ ➄ ➁ 1: Interface PCB unit 2: Engine controller unit 3: Delivery paper sensor PCB 4: Top of page sensor PCB 5: Intermediate PCB Figure 3-7-1 3 - 22...
  • Page 159 CHAPTER 3 B. Interface PCB Unit C. Engine Controller Unit 1) Remove the rear cover unit and left 1) Remove the rear cover unit, right cover, cover unit. and left cover unit. 2) Disconnect the flat cable and remove 2) Remove the interface PCB unit. the two screws with washers and four 3) Remove the two screws and the PCB screws.
  • Page 160 CHAPTER 3 5) Disconnect the three connectors. 8) Remove the two screws and the engine controller unit. ➀ ➁ ➀ ➀ Connectors ➀ Screws ➁ Engine controller unit Figure 3-7-5 Figure 3-7-7 6) Disconnect the flat cable. 7) Remove the two screws. ➀...
  • Page 161 CHAPTER 3 D. Delivery Paper Sensor PCB E. Top of Page Sensor PCB 1) Remove the rear cover unit. 1) Remove the engine controller unit. 2) Remove the interface PCB unit. 2) Remove the screw and the top of page 3) Remove the PCB fixing plate.
  • Page 162 CHAPTER 3 F. Intermediate PCB 1) Remove the rear cover unit, right cover, left cover unit, and top cover unit. 2) Disconnect the three flat cables and the connector. 3) Remove the three screws and the inter- mediate PCB. ➁ ➀...
  • Page 163 CHAPTER 4 TROUBLESHOOTING PREFACE........4-1 TROUBLESHOOTING....4-17 IMAGE DEFECTS ...... 4-5 VII. MEASUREMENT AND III. JAMS........4-12 ADJUSTMENT......4-20 IV. TRANSPORT DEFECTS ..... 4-15 VIII. MAINTENANCE AND MALFUNCTION SERVICING ....... 4-22 TROUBLESHOOTING....4-16 IX. LOCATION OF CONNECTORS..4-26 VI. MALFUNCTION STATUS...

  • Page 165: Preface

    CHAPTER 4 I. PREFACE A. Malfunction Diagnosis Flowchart The malfunctions that occur in the printer are mainly classified to five factors; “image defects”, “jams”, “transport defects”, “malfunction”, and “malfunction status”. If a malfunction occurred in the printer, the service technician is to identify the factor accord- ing to the flowchart and then to rectify the problem according to the action procedures of each malfunction.
  • Page 166 CHAPTER 4 Initial check execution Power ON Refer to the item, "malfunction Displays "operator call" Displays "READY"? troubleshooting" or "service call"? Do you make Refer to the item, "malfunction test print? (Note 1) status troubleshooting" Make a test print Refer to the item, "jams" Occurs paper jam? Delivers paper Refer to the item,...
  • Page 167 CHAPTER 4 Notes: 1. Before executing a test print, make sure to select the pickup source and delivery source that were used when the malfunction occurred according to the information given by the user. If the information is not available, make test prints with all feasible combination of paper source and delivery source in the printer, and find out the factor.
  • Page 168 CHAPTER 4 B. Initial Check Check the following items before making a diagnosis of malfunction. If any failure is found, the service technician is to clear problems and to give instructions to the user. 1. Installation environment Make sure that the requirements stated below meet when installing the printer. a.

  • Page 169: Image Defects

    CHAPTER 4 II. IMAGE DEFECTS Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If an “image defect” is found, the defective part must be located and rectified by the following proce- dures. Table 4-2-1 • II-1 Light: Output very light image •...
  • Page 170 CHAPTER 4 Action: Replace the laser/scanner unit. 8) Defective engine controller PCB Action: Replace the engine controller PCB. 9) Defective interfece controller PCB Action: Replace the interfece controller PCB. II-2. Dark <Possible causes> 1) The image density is improperly adjusted. Action: Adjust the image density by operating the external device.
  • Page 171 CHAPTER 4 II-4. All black <Possible causes> 1) Poor contact in the primary charging bias contact on the engine controller PCB and the car- tridge contact. Action: Clean the contacts if dirty. If the problem still remains after cleaning, or parts are deformed or damaged, replace any defective parts.
  • Page 172 CHAPTER 4 cannot be removed, replace the dirty roller. 4) The transfer guide, feed guide or fixing unit entrance guide is dirty. Action: Clean any dirty areas. 5) The face-down or face-up delivery roller is dirty. Action: Clean the dirty part. If dirt cannot be removed, replace the dirty roller. II-7.
  • Page 173 CHAPTER 4 1) The toner cartridge is running out of toner. Action: Remove the cartridge from the printer. Rock the cartridge in the manner described in Chapter 1 on Page 1-9, and then install it back to the printer. If the problem still remains, replace the cartridge.
  • Page 174 CHAPTER 4 2) The fixing film unit is defective. Action: Replace the fixing film unit. II-13. Poor fixing <Possible causes> 1) The nip width of the fixing unit is not within the specification. Action: Measure the nip width of the fixing unit according to “Checking the nip width of the pressure roller”...
  • Page 175 CHAPTER 4 is worn. 2. Dirty or worn feed roller. Action: Clean the feed roller. Replace the roller if the dirt cannot be removed or the roller is worn. 3. Defective top of page sensing lever. Action: Replace the lever if it does not move smoothly or is damaged. Table 4-2-2 Periodical dirt and spots appearing on the image Phenomenon...

  • Page 176: Jams

    CHAPTER 4 III. JAMS Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If a “jam” is found, the defective part must be located and rectified by the following procedures. The paper path can be divided into two sections: 1) paper pickup and feed block, and 2) fix- ing and delivery block.
  • Page 177 CHAPTER 4 III-1. Paper pick-up and feed block <Possible causes> 1) The top of page sensor lever is not moving smoothly or is damaged. Action: Replace the top of page sensor lever if damaged. If this does not rectify the situa- tion, replace the sensor.
  • Page 178 CHAPTER 4 Action: Replace the fixing pressure unit. 4) The pressure roller is not rotating smoothly. Action: Check the gears, and replace any worn or fractured gear(s). If the roller is worn or fractured, replace it. 5) The fixing film unit or pressure roller is deformed or damaged. Action: If the unit or roller is deformed or damaged, replace it.

  • Page 179: Transport Defects

    CHAPTER 4 IV. TRANSPORT DEFECT Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If a “transport defect” is found, the defective part must be located and rectified by the following pro- cedures. IV-1. Multi-feed <Possible causes> 1) The separation pad surface is dirty or worn. Action: Clean the separation pad surface.

  • Page 180: Malfunction Troubleshooting

    CHAPTER 4 V. MALFUNCTION TROUBLESHOOTING Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If an “malfunction” is found, the defective part must be located and rectified by the following proce- dures. V-1. No AC power <Possible causes> 1) Blown fuse (FU101) Action: Replace the fuse (FU101).

  • Page 181: Malfunction Status

    CHAPTER 4 VI. MALFUNCTION STATUS TROUBLESHOOTING Perform troubleshooting according to the malfunction diagnosis flowchart (Figure 4-1-1). If an “malfunction status” is found, the defective part must be located and rectified by the following procedures. VI-1. Scanner motor/BD failure <Possible causes> 1) The laser shutter cannot open due to the damaged claw of the cartridge cover.
  • Page 182 CHAPTER 4 Action: Replace the engine controller PCB. VI-3. The printer cannot enter the ready mode and a “jam status” is output, although a paper jam has not occurred. <Possible causes> 1) The top of page sensor lever is not moving smoothly, or damaged. Action: Set the lever to move smoothly.
  • Page 183 CHAPTER 4 although the cartridge is installed. <Possible causes> 1) Poor contact between the primary charging bias contact on the engine controller PCB and the cartridge contact. Action: Clean the contacts if dirty. If the problem still remains after cleaning, or parts are deformed or damaged, replace the defective parts.

  • Page 184: Measurement And Adjustment

    CHAPTER 4 VII. MEASUREMENT AND ADJUSTMENT A. Mechanical Adjustment 1. Checking the nip width of the lower fixing roller The fixing unit is not designed to allow adjustment of the pressure (nip width); however, the incorrect nip width can cause fixing problems. Follow the procedures below to check the nip width: 1) Make an all-black print of A4 size using an EP cartridge, and bring the print to the cus- tomer’s site.
  • Page 185 CHAPTER 4 C. LEDs, Test Pins, Jumpers and Switches on PCBs Only the LEDs, test pins, jumpers, and switches required during the after-sales service in the field are listed below. All other test pins, etc. are for the factory use only. The adjustment and check using these test pins, etc.

  • Page 186: Maintenance And Servicing

    CHAPTER 4 VIII. MAINTENANCE AND SERVICING A. Periodic Replacement Parts This printer does not have any periodic replacement parts. Note: Periodic replacement parts are the parts that must be replaced at regular intervals, even if they are functioning properly and show no signs of wear. (Failure of these parts can seriously affect printer performance.) These parts should be replaced during a regular service visit closest to the end of the parts expected life.
  • Page 187 CHAPTER 4 D. Cleaning During a Service Visit ➀ ➁ ➂ ➃ ➄ 1: Fixing entrance guide 2: Transfer charging roller 3: Feed roller 4: Separetion pad 5: Pick-up roller Figure 4-8-1 Clean the printer during a service visit, follo 1.
  • Page 188 CHAPTER 4 E. Standard Tools The table below lists the standard tools required to service the printer. Table 4-8-1 Tool No. Remark Tool name Tool case TKN-0001 Jumper wire TKN-0069 With a clip Clearance gauge CK-0057 0.02 to 0.3mm Phillips screwdriver CK-0101 M4, M5 Length : 363mm Phillips screwdriver...
  • Page 189 CHAPTER 4 F. Special Tools No special tools are required other than standard tools for servicing. G. Lubricants and Cleaners List Table 4-8-2 Name Components Remarks Ethyl alcohol Cleaning: oil and • Purchase locally toner stains • Flammable: keep away from flame Lubricant Special oil...

  • Page 190: Location Of Connectors

    CHAPTER 4 IX. LOCATION OF CONNECTORS A. Printer J411 J801 J206 J101 J102 J901 J210 J905 J401 J410 J902 J204 J907 J201 J211 J203 Figure 4-9-1 4 - 26...
  • Page 191 APPENDIX GENERAL TIMING CHART ..A-1 III. LIST OF SIGNALS ..... A-3 GENERAL CIRCUIT DIAGRAM ... A-2 IV. MESSAGES TABLE ....A-5...
  • Page 193 APPENDIX I. GENERAL TIMING CHART A. Timing Chart for Printing Two A4-size Sheet Continuously Power ON (Unit: Seconds) Sequence STBY PRINT LSTR STBY WAIT INTR Between-page temperature control About 1.3 About 1.3 Print temperature control 100°C control Fixing heater (H701) About 1.3 30.0 Air intake fan (FAN1)
  • Page 194 APPENDIX II. GENERAL CIRCUIT DIAGRAM To host computer Fixing unit Thermal fuse Fixing heater Delivery paper sensor Cartridge FU1132 H701 J1102 Delivery paper sensor PS401 Bi-Directional Parallel I/F Main thermistor Sub thermistor Pressure roller TH701 TH702 1 2 3 J410 Interface controller PCB Fixing film unit J102F...
  • Page 195 APPENDIX III. LIST OF SIGNALS A. Engine Controller PCB Connector Abbreviation I/O Logic Signal name INL101 AC power input AC power input J102 AC power output AC power output J201 +3.3V N.C. N.C. N.C. N.C. /RSTO RESET signal /SCLK Palus SERIAL CLOCK signal STATUS/COMMAND signal Palus BD OUTPUT signal +3.3V...
  • Page 196 APPENDEX Connector Abbreviation I/O Logic Signal name /POSNS DELIVERY PAPER DETECTION signal J211 +3.3V /PISNS TOP OF PAGE signal J301 DEVELOPING BIAS OUTPUT signal Analog J302 TRANSFER CHARGING BIAS OUTPUT signal Analog J303 DRGND J304 PRIMARY CHARGING BIAS OUTPUT signal Analog J305 FIXING BIAS OUTPUT signal...
  • Page 197 • Idling Status • Printing Status • Status Not Available • Error Status Also, the descriptions and procedures for the messages are displayed in the Error message area. Canon LASER SHOT LBP-1210 Job Options Help Message area Printer Raedy Error message area...
  • Page 198 APPENDEX 1. Idling status Indicates the printer contains no print jobs, and no problems for the printing operation. The following three messages are indicated for the idling status: Message area: Printer Ready Error message area: None Content: The printer is ready to print. Message area: Printing Completed Error message area: None Content: The printer has completed the print job.
  • Page 199 Error message area: The wrong printer is connected. Content: The printer is not LBP-1210. Action: When you use a printer other than LBP-1210, make sure to switch to the driver to which you are to connect. Message area: Printer Busy Error message area: The printer is being used by another port job.
  • Page 200 APPENDEX Message area: Service Error Error message area: Printer error. Contact the store where you bought the printer. Content: Service errors occur in the printer engine. Perform the Trouble Shooting in Chapter 4. Message area: Clear Paper Jam Error message area: 1.Open cover 2.Remove toner cartridge 3.Remove jammed paper Content: A paper jam has occurred in the printer.
  • Page 201 Prepared by PERIPHERAL PRODUCTS QUALITY ADVANCEMENT DIV. PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT. CANON INC Printed in Japan REVISION 0 ( JUN. 2002 ) 4202, Fukara, Susono-shi, Shizuoka 410-1196, Japan...
  • Page 202 The printing paper contains 70% waste paper. PRINTED IN JAPAN (IMPRIME AU JAPON) CANON INC.

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