Panasonic BT-LH900P Service Manual
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Panasonic BT-LH900P Service Manual

Panasonic BT-LH900P Service Manual

Liquid crystal video monitor
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Sec. 1
Service Information
Sec. 2
Electrical Adjustments
Sec. 3
Block Diagrams
Schematic Diagrams
Sec. 4
Exploded Views &
Sec. 5
Replacement Parts Lists
Liquid Crystal Video Monitor
BT-LH900P
© 2003 Matsushita Electric Industrial Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.
ORDER NO. BSD03100271
D06

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Summary of Contents for Panasonic BT-LH900P

  • Page 1 ORDER NO. BSD03100271 Sec. 1 Service Information Liquid Crystal Video Monitor Sec. 2 Electrical Adjustments BT-LH900P Sec. 3 Block Diagrams Schematic Diagrams Sec. 4 Exploded Views & Sec. 5 Replacement Parts Lists © 2003 Matsushita Electric Industrial Co., Ltd. All rights reserved.
  • Page 2 WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicans.
  • Page 3 SAFETY PRECAUTIONS GENERAL GUIDELINES ELECTROSTATICALLY SENSITIVE (ES) DEVICES 1. When servicing, observe the original lead dress. If a short Some semiconductor (solid state) devices can be damaged circuit is found, replace all parts which have been over- easily by static electricity. Such components commonly are heated or damaged by the short circuit.
  • Page 4 HCD0310NYNK102...

  • Page 5: Table Of Contents

    SERVICE INFORMATION CONTENTS 1. Maintenance......................INF-1 1-1Necessity for maintenance ......................INF-1 1-2Maintenance Schedule......................... INF-1 1-3Exchange method of the Backlight....................INF-2 2. Service Manu ......................INF-3 2-1Service Menu Operation Method....................INF-3 3. How to set the internal switches ................INF-4 4.

  • Page 6: Maintenance

    1. Maintenance 1-1. Necessity for maintenance A backlight power supply is used in this LCD monitor. This part (which is a consumable) will deteriorate over time and lead to a reduced level of performance and failure. For this reason, it involves periodic maintenance and servicing aimed at keeping up the performance that the monitor is designed to provide and preventing sudden failures caused by consumable part.

  • Page 7: 1-3Exchange Method Of The Backlight

    1-3.Exchange method of the When removing the Backlight, Slide the Backlight as indicated by the arrow while releasing the Backlight. Locking tab. 1. Unscrew the 4 Screw (A), and open the backcase by turning it to the direction of the arrow. NOTE Work carefully so as not to damage the Flexible cable when removing it.

  • Page 8: Service Manu

    2. Service menu 2-1. Service Menu Operation Method 1. While simultaneously pressing the [ INPUT] and [MENU/EXIT] button and the [ HD ZOOM/ ] button, switch on the unit's power . 2. Press the [MENU/EXIT] button once again. The service menu appears on the LCD. Press the [ button and [ ] button to select the item, then press [ENTER].

  • Page 9: How To Set The Internal Switches

    3. How to set the internal switches The table shows the functions of the switches on the Main and Sub board. Switches indicated "Factory use only" must be set to the "Factory Setting". MAIN P.C.BOARD Factory DIPSW6200 Function Setting Factory use only SUB P.C.BOARD Factory DIPSW3601...

  • Page 10: Software Version Upgrade Method

    4. Software Version Upgrade Method 4-1. Version Upgrade for the microprocessor with Flash Memory The microcomputers on the MAIN circuit board has bulit-in flash memory. Version up the software accrding to the following procedure. 4-2. Version Upgrade Preparations Items required to write to the flash memory 4-2-1.
  • Page 11 4-3. Writing steps Remove the maintenance cover, set DIP switch (SW3601) as follows. DIPSW3601 Position 2. Switch the unit's power on. 3. Start up the software for updating the flash memory. “mFlash.exe” 4. Press the “Open” button. 5. Select the floppy drive and then select the “jcf format file (***.jcf) on dialog box of Restore JCF” and then press the “Open”...
  • Page 12 6. After reading the memory, Check Sum value appears. 7. Press the “E,P,R,” button. Because the confirmation window of the note is displayed I push a button “Yes”. 9. “Read Check – Ok” appears if the program ends correctly. Press the OK button then Exit button to end Flash Starter.

  • Page 13: Pld Version Upgrade Procedure

    2. Connect the CPLD WRITER Cable (VFK1590P2) between the connector for writing of each PLD (refer to below) and P2 connector of CPLD WRITER. 3. Turn on this model and Personal Computer (Windows mode). BT-LH900P D-SUB 25 pins CABLE CONNECTOR...
  • Page 14 C. Boot up the Ver. up Software and Ver. up Procedure Insert floppy disk (which is included all files of the VVVSI***) to floppy drive. Select “start button” on the Windows Screen and then “Program” and then boot up the “MAX+plus II *** programmer only”...
  • Page 15 If the following message appeared, Press “Yes” button. Click the “Program” button on Programmer dialog. 10. When Progress Bar reaches at point of 100, the message “Programming Complete” appears, then PLD version upgrade is completed. Click “OK” button on the Programming complete message Dialog. 11.

  • Page 16: Gamma Data Backup (/Restore) Method

    6. GAMMA Data Backup (/Restore) Method This unit memorizes gamma correction data in EEPROM (IC6203) on the MAIN circuit board. Therefore, when exchanging the MAIN circuit board or EEPROM (IC6203), backup the gamma correction data at the personal computer in advance and restore it data exchanged EEPROM. 6-1.

  • Page 17: 6-2Data Backup Procedure

    6-2. Data Backup Procedure 11. Turn ON the monitor and PC. 12. Execute the ”Corrector.exe” and boot up the gamma adjustment software. 13. Main window is displayed as follows. 14. Click the “MONITOR–>PC” button and download starts. PC–> MONITOR MONITOR–> PC NOT USED NOT USED 15.

  • Page 18: 6-3Data Restore Procedure

    6-3. Data Restore Procedure 1. Execute ”Corrector.exe” and boot up the gamma adjustment software start. 2. Main window is displayed. 3. Click the “File” tab and select the ”Open”, and then read the gamma correction data, which saved in advance. 4.
  • Page 19 ELECTRICAL ADJUSTMENTS CONTENTS 1. ADC level adjustment.................... EAD-1 1-1Preparations..........................EAD-1 1-2ADC level adjustment........................EAD-2 2. TP and VR Location / Parts Location Table............EAD-4...
  • Page 20 VIDEO IN  NOTE:Use cable less than 3 meters. 1. Follow the diagram to connect the signal generator and the rear terminal of BT-LH900P with the BNC cables. 2. Switch on the signal generator and LCD monitor. Allow the LCD monitor to warm for 10 minutes after switching it on before making adjustment.
  • Page 21 1-2. ADC level adjustment 1. Open the service menu. (While simultaneously pressing the [INPUT]+[MENU/EXIT]+[HD ZOOM/Ú] buttons, switch on the unit’s power. And press the [MENU/EXIT] button once again.) 2. Select “ADC CHECK” and press the [ENTER] button to go to the item’s sub menu. [ADC AUTO CHECK]  YpbPr 480I 480P 1080...
  • Page 22 6. All the measuring signals on the LCD monitor change to green letters and the following message appears when measurement is complete. ADJUST--COMPLETE!! PRESS ENTER KEY 7. Press the [ENTER] button to save the measurement data. The following message appears on the LCD when saving is complete.
  • Page 23 2.TP and VR Location / Parts Location Table MAIN P.C.BOARD COMPONENT SIDE IC6100 IC6402 IC6807 P6105 Q6803 TP6803 IC6101 IC6403 IC6808 P6300 Q6804 VR6800 IC6102 IC6404 IC6810 P6700 Q6805 VR6801 IC6103 IC6503 IC6811 P6800 QR6802 VR6802 IC6104 IC6602 IC6812 P6801 QR6803 X6200 IC6203...
  • Page 24 MAIN P.C.BOARD FOIL SIDE IC6105 IC6502 Q6102 QR6105 TP6400 IC6106 IC6600 Q6304 QR6106 TP6401 IC6200 IC6601 Q6305 QR6800 TP6402 IC6201 IC6604 Q6306 QR6801 TP6403 IC6202 IC6700 Q6307 TP6101 TP6404 IC6300 IC6804 Q6806 TP6102 TP6405 IC6301 IC6809 Q6807 TP6105 TP6600 IC6400 IC6814 QR6100 TP6300...
  • Page 25 SUB P.C.BOARD COMPONENT SIDE IC3101 IC3303 Q3109 Q3306 IC3102 IC3304 Q3202 Q3308 IC3201 P3402 Q3206 Q3311 IC3202 P3403 Q3208 Q3313 IC3203 P3605 Q3211 Q3315 IC3204 Q3102 Q3213 SW3601 IC3301 Q3105 Q3217 TG3601 IC3302 Q3107 Q3302 TG3603 TG3601 GND A TG3603 GND D SW3601 (COMPONENT SIDE)
  • Page 26 SUB P.C.BOARD FOIL SIDE IC3403 Q3106 Q3207 Q3303 Q3316 P3101 Q3108 Q3209 Q3304 Q3317 P3602 Q3110 Q3210 Q3305 TG3602 P3603 Q3111 Q3212 Q3307 TP3101 P3604 Q3201 Q3214 Q3309 TP3102 Q3101 Q3203 Q3215 Q3310 TP3201 Q3103 Q3204 Q3216 Q3312 TP3301 Q3104 Q3205 Q3301 Q3314...
  • Page 27 CVBS DEC P.C.BOARD TG100 A GND TP206 TP200 TP202 TP201 TP208 TP207 TP300 TP301 TP302 TP303 TP304 TP305 TP306 TP307 TG300 D GND (COMPONENT SIDE) (FOIL SIDE) FRONT P.C.BOARD (FOIL SIDE) SDI P.C.BOARD REF.NO.3000 SERIES +1.8V +3.3V (COMPONENT SIDE) EAD-8...
  • Page 28 BLOCK DIAGRAMS CONTENTS BLOCK DIAGRAM ..................... BLK-1...
  • Page 29 BLOCK DIAGRAM P6104 MAIN P.C.BOARD JTAG IC6405<4> IC6700<7> THC63LVDM83R SUB P.C.BOARD +3.3V P6700 P3605 P6105 P3602 (+5V) D+3.3V N.C. DPSR N.C. LVDS TEST3 SW3601 (D+3.3V) TCLK+ CNVSS TCLK- SYS RST IC6602<6> IC6603<6> IC6403<4> P3604 EPC2TC32 EPC2TC32 Serial ROM Serial ROM Serial ROM TEST1 (D+3.3V)
  • Page 30 SCHEMATIC DIAGRAMS About indication of a circuit name Circuit Name COMPONENT Circuit Board No. F1:SERVO (CTL) NAME CIRCUIT BOARD NO. DRAWING NO. KR2D53 (1/17) VEP82230A-1 Drawing No. SCM001 Page No. NOTE: BE SURE TO MAKE YOUR ORDERS OF REPLACEMENT PARTS ACCORDING TO PARTS LIST...
  • Page 31 CONTENTS OVER ALL (1/1).......................SCM001 MAIN (CONNECT (1/8)....................SCM002 MAIN (LCD) (2/8).....................SCM003 MAIN (A/D) (3/8) ......................SCM004 MAIN (FPGA1) (4/8) ....................SCM005 MAIN (LSI43) (5/8)....................SCM006 MAIN (FPGA2) (6/8) ....................SCM007 MAIN (LVDS) (7/8)....................SCM008 MAIN (REG) (8/8) ....................SCM009 SUB (Y IN) (1/5).......................SCM010 SUB (PR IN) (2/5) ....................SCM011 SUB (PB IN) (3/5) ....................SCM012 SUB (GPI IN) (4/5) ....................SCM013 SUB (CONNECT) (5/5) ....................SCM014...
  • Page 32 VR FLEX. P.C.BOAD x 4 LCD PANEL COMPONENT OVER ALL 01/01 NAME CIRCUIT BOARD NO. DRAWING NO. KR9A0026 ***** NOTE : The parts number of cable refer to the parts list (PRT-4) SCM001...
  • Page 33 COMPONENT MAIN (CONNECT) 01/08 NAME CIRCUIT BOARD NO. DRAWING NO. KR6W56 VEP16104A SCM002...
  • Page 34 COMPONENT MAIN (LCD) 02/08 NAME CIRCUIT BOARD NO. DRAWING NO. KR6W56 VEP16104A SCM003...
  • Page 35 COMPONENT MAIN (A/D) 03/08 NAME CIRCUIT BOARD NO. DRAWING NO. KR6W56 VEP16104A SCM004...
  • Page 36 COMPONENT MAIN (FPGA1) 04/08 NAME CIRCUIT BOARD NO. DRAWING NO. KR6W56 VEP16104A SCM005...
  • Page 37 COMPONENT MAIN (LSI43) 05/08 NAME CIRCUIT BOARD NO. DRAWING NO. KR6W56 VEP16104A SCM006...
  • Page 38 COMPONENT MAIN (FPGA2) 06/08 NAME CIRCUIT BOARD NO. DRAWING NO. KR6W56 VEP16104A SCM007...
  • Page 39 COMPONENT MAIN (LVDS) 07/08 NAME CIRCUIT BOARD NO. DRAWING NO. KR6W56 VEP16104A SCM008...
  • Page 40 COMPONENT MAIN (REG) 08/08 NAME CIRCUIT BOARD NO. DRAWING NO. KR6W56 VEP16104A SCM009...
  • Page 41 COMPONENT SUB (Y IN) 01/05 NAME CIRCUIT BOARD NO. DRAWING NO. KR30558 VEP13114A SCM010...
  • Page 42 COMPONENT SUB (PR IN) 02/05 NAME CIRCUIT BOARD NO. DRAWING NO. KR30558 VEP13114A SCM011...
  • Page 43 COMPONENT SUB (PB IN) 03/05 NAME CIRCUIT BOARD NO. DRAWING NO. KR30558 VEP13114A SCM012...
  • Page 44 COMPONENT SUB (GPI IN) 04/05 NAME CIRCUIT BOARD NO. DRAWING NO. KR30558 VEP13114A SCM013...
  • Page 45 COMPONENT SUB (CONNECT) 05/05 NAME CIRCUIT BOARD NO. DRAWING NO. KR30558 VEP13114A SCM014...
  • Page 46 COMPONENT CVBS DEC 01/03 NAME CIRCUIT BOARD NO. DRAWING NO. KR3A003 VEP13115A SCM015...
  • Page 47 COMPONENT CVBS DEC 02/03 NAME CIRCUIT BOARD NO. DRAWING NO. KR3A003 VEP13115A SCM016...
  • Page 48 COMPONENT CVBS DEC 03/03 NAME CIRCUIT BOARD NO. DRAWING NO. KR3A003 VEP13115A SCM017...
  • Page 49 COMPONENT 01/01 NAME CIRCUIT BOARD NO. DRAWING NO. KR0A0040 VEP10120A SCM018...
  • Page 50 COMPONENT SDI SUB 01/01 NAME CIRCUIT BOARD NO. DRAWING NO. KR0A0039 VEP10119A SCM019...
  • Page 51 COMPONENT POWER SUB 01/01 NAME CIRCUIT BOARD NO. DRAWING NO. KR1G76 VEP11110A SCM020...
  • Page 52 COMPONENT TALLY 01/01 NAME CIRCUIT BOARD NO. DRAWING NO. KR0T92 VEP10117A SCM021...
  • Page 53 COMPONENT FRONT 01/01 NAME CIRCUIT BOARD NO. DRAWING NO. KR0T90 VEP10115A SCM022...
  • Page 54 COMPONENT 01/01 NAME CIRCUIT BOARD NO. DRAWING NO. KR0T91 VEP10116A SCM023...
  • Page 55 EXPLODED VIEWS & REPLACEMENT PARTS LISTS CONTENTS CASING PARTS ASSEMBLY ................PRT-1 PACKING PARTS ASSEMBLY ..............PRT-3 CABLE LIST…....................PRT-4 ELECTRICAL REPLACEMENT PARTS LIST ..........PRT-5...

  • Page 56: Casing Parts Assembly

    Components identified with the mark have the special characteristics for safety. When replacing any of these components, use only the same type. CASING PARTS ASSEMBLY Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks VYP8852 FRONT CASE ASS'Y...
  • Page 57 CASING PARTS ASSEMBLY SUB C.B.A. POWER SUB C.B.A. TALLY C.B.A. SDI SUB C.B.A. MAIN C.B.A. CVBS-DEC EXTDC C.B.A. C.B.A. SWITCH C.B.A. FRONT C.B.A. SDI C.B.A.

  • Page 58: Packing Parts Assembly

    Components identified with the mark have the special characteristics for safety. When replacing any of these components, use only the same type. PACKING PARTS ASSEMBLY Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks VQT0F30 OPERATING INSTRUCTIONS...

  • Page 59: Cable List

    CABLE LIST CONNECTION BETWEEN Parts No. P.C.B. Name Connector No. P.C.B. Name Connector No. J1, J2 SDI SUB J505, J502 VEE0E13200 MAIN P6101 TQLL Y P401 VEE0Y85 P500 P3604 VEE0Y86 MAIN P6120 P3603 VEE0Y87 MAIN P6800 POWER SUB P104 VEE0Y88 POWER SUB P102 POWER SW...

  • Page 60: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks C6331 ECUX1C274KBN C.CAPACITOR CH 16V 0.27U VEP16104A MAIN P.C.BOARD 1 (RTL) C6332 ECUX1H331JCV C.CAPACITOR CH 50V 330P C6333 ECUX1C334KBN C.CAPACITOR CH 16V 0.33U VEP13114A SUB P.C.BOARD...
  • Page 61 Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks C6636 F1H1H104A783 C.CAPACITOR CH 50V 0.1U FL6800 F1J1A105A013 C.CAPACITOR CH 10V C6637 ECUX1C106VBP C.CAPACITOR CH 16V C6700-05 ECJ1VF1E104Z C.CAPACITOR CH 25V 0.1U IC6100 TLCX04F C6706 EEVHB0J470 E.CAPACITOR...
  • Page 62 Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks L6810 VLQ0859M330 COIL 33UH R6242,43 ERJ3GEY0R00 M.RESISTOR CH 1/16W L6812 J0JBC0000041 FILTER R6244 EXB24V103J COMBI.R-R L6813 J0JKC0000009 FILTER R6245 ERJ3GEYJ330 M.RESISTOR CH 1/16W R6300-02 ERJ3GEY0R00 M.RESISTOR CH 1/16W P6100...
  • Page 63 Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks R6629 ERJ6RED220 M.RESISTOR CH 1/10W R6630 ERJ3GEY0R00 M.RESISTOR CH 1/16W SW6200 VSS0367-08B SWITCH R6631,32 ERJ3GEYG102 M.RESISTOR CH 1/16W R6700-05 D1H833040002 COMBI.R-R TP6100-05 EYF6CU TEST POINT R6706 ERJ3GEYJ330 M.RESISTOR CH 1/16W...
  • Page 64 Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks C3401 EEVHB1A330 E.CAPACITOR R3101 ERJ14NF75R0 M.RESISTOR CH 1/4W C3402 F1H1H104A783 C.CAPACITOR CH 50V 0.1U R3102 ERJ3GEYJ560 M.RESISTOR CH 1/16W C3405-09 F1H1H104A783 C.CAPACITOR CH 50V 0.1U R3103 ERJ3GEYG682...
  • Page 65 Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks R3306 ERJ3GEYJ100 M.RESISTOR CH 1/16W R3307 ERJ3GEYG471 M.RESISTOR CH 1/16W L200 J0JBC0000041 FILTER R3308,09 ERJ3GEYJ101 M.RESISTOR CH 1/16W R3310 ERJ3GEYG471 M.RESISTOR CH 1/16W P100 VJP3950F008 CONNECTOR (MALE) R3311...
  • Page 66 Components identified with the mark have the special characteristics for safety. When replacing any of these components, use only the same type. Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks J1,J2 VJP4131 CONNECTOR (MALE) 2 K1QZB1AD0003 VEP11110A...
  • Page 67 Ref.No. Part No. Part Name & Description Remarks Ref.No. Part No. Part Name & Description Remarks VEP10116A SW P.C.BOARD 1 (RTL) C301 F1H1H104A783 C.CAPACITOR CH 50V 0.1U D301-04 B3ADA0000065 DIODE D305 HLMP1790S02 1 B3AAA0000298 P301 VJP3950A012D CONNECTOR (MALE) R301 ERJ3GEYJ681 M.RESISTOR CH 1/16W SW301-05 VSP1031...

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