Panasonic TC-26LX85 Service Manual
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Panasonic TC-26LX85 Service Manual

26 inch/32 inch class lcd hdtv, lh70 chassis
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26 inch/32 inch Class LCD HDTV
TC-26LX85
Model No.
TC-32LX85
LH70 Chassis
© 2008 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
ORDER NO.MTNC080206CE
B05 Canada: B07

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Summary of Contents for Panasonic TC-26LX85

  • Page 1 ORDER NO.MTNC080206CE B05 Canada: B07 26 inch/32 inch Class LCD HDTV TC-26LX85 Model No. TC-32LX85 LH70 Chassis © 2008 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribu- tion is a violation of law.

  • Page 2: Safety Precautions

    1 Safety Precautions 1.1. General Guidelines 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

  • Page 3: Prevention Of Electrostatic Discharge (Esd) To Electrostatically Sensitive (Es) Devices

    2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor [chip] components.

  • Page 4: About Lead Free Solder (Pbf)

    2.2. About lead free solder (PbF) Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

  • Page 5: Service Navigation

    3 Service Navigation 3.1. Service Hint Board Name Function A-Board Rear Terminal, AV Swich, MCU, Audio & Video Processor, LVDS, Tuner V-Board Remote Receiver, LED P-Board Power (AC/DC), DC-DC Control Panel Assy Control Button, Power switch None serviceable Control Panel Assy should be exchanged for service. 3.2.

  • Page 6: Specifications

    32 inch class (31.5 inches measured diagonally) (TC-32LX85) (W × H × Diagonal) 22.7 inch × 12.8 inch × 26.0 inch (576 mm × 324 mm × 661 mm) (TC-26LX85) 27.5 inch × 15.4 inch × 31.5 inch (698 mm × 392 mm × 800 mm) (TC-32LX85) 1,049,088 (1,366 (W) ×...

  • Page 7: How To Enter Into Service Mode

    5 Service Mode 5.1. How to enter into Service Mode While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds. 5.1.1. Key command [1] button...Main items Selection in forward direction [2] button...Main items Selection in reverse direction [3] button...Sub items Selection in forward direction [4] button...Sub items Selection in reverse direction...

  • Page 8: How To Access

    5.2. SRV-TOOL 5.2.1. How to access 1. Select [SRV-TOOL] in Service Mode. 2. Press [OK] button on the remote control. 5.2.2. Display of SOS History SOS History (Number of LED blinking ) indication. From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment. This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory ship- ment setting].

  • Page 9: Hotel Mode

    5.3. Hotel mode 1. Purpose Restrict a function for hotels. item Function 2. Access command to the Hotel mode setup menu Mode Select hotel mode off/on In order to display the Hotel mode setup menu, please Input Select input signal modes. enter the following command (within 2 second).

  • Page 10: Troubleshooting Guide

    6 Troubleshooting Guide Use the self-check function to test the unit. 1. Checking the IIC bus lines 2. Power LED Blinking timing 6.1. Check of the IIC bus lines 6.1.1. How to access Self-check indication only: Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.

  • Page 11: Power Led Blinking Timing Chart

    6.2. Power LED Blinking timing chart 1. Subject Information of LED Flashing timing chart. 2. Contents When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
  • Page 12 6.3. No Power First check point There are following 2 states of No Power indication by power LED. 1. No lit 2. Red is lit then turns red blinking a few seconds later. (See 6.2.)

  • Page 13: Rear Cover

    7 Disassembly and Assembly Instructions 7.1. Rear cover 7.2. Pedestal assy 1. Remove the 17 screws (A). 1. Lay down the unit so that the rear cover faces upward. 2. Remove the 3 screws (B), 2. Remove the 4 screws. 3.

  • Page 14: Control Panel Assy

    7.4. VESA metal and Rear center 7.5. Control panel assy cover 1. Disconnect the connector (A7). 2. Remove the 2 screws. 1. Remove the 6 (32 inch) / 4 (26 inch) screws. 3. Remove the control panel assy. 2. Remove the VESA metal and Rear center cover. 32 inch 7.6.

  • Page 15: Chassis Frame

    7.7. P-Board 7.9. V-Board 1. Remove the 7 (32 inch) / 6 (26 inch) screws. 1. Remove the 2 screws. 2. Disconnect the connectors (P3/P7). 2. Disconnect the connector (V1). 3. Remove the P-Board. 3. Remove the V-Board. 32 inch 26 inch 7.10.
  • Page 16 26 inch 26 inch 7.11. LCD MTG and Speaker 1. Remove the 8 (32 inch) / 6 (26 inch) screws (G). 2. Remove the 4 (32 inch) / 2 (26 inch) screws (H) 3. Remove the LCD MTG and Speaker. 32 inch 4.

  • Page 17: Emi Processing (32 Inch)

    7.12. EMI processing (32 inch)
  • Page 21 7.13. EMI processing (26 inch)

  • Page 24: Measurements And Adjustments

    8 Measurements and Adjustments 8.1. Voltage chart of P-board VOLTAGE TEST POINT SPECIFICATION TP7070 24.0±1.2V SUB_5V TP7015 5.13±0.25V SUB_9V TP7055 9.27±0.45V BT_30V TP7072 31.5±2.5V SOUND_15V TP7050 15.0V±1.2V DTV12V TP7057 12.0±1.2V PANEL_12V TP7058 12.0±0.6V STB_5V TP7061 5.0±0.5V 8.2. Voltage chart of A-board VOLTAGE TEST POINT SPECIFICATION...

  • Page 25: Picture Level Adjustment (Video)

    8.4. Picture level adjustment (VIDEO) Instrument Name Remarks 1. REMOTE TRANSMITTER 2. Video signal generator (Standard) Adjustment or Inspection Procedure Remarks <procedure> 1. Receive the CVBS standard signal. (Need standard sync signal). (ASPECT: ZOOM or FULL, Picture mode: VIVID, AI Picture: OFF) * BACK LIGHT MAX VALUE <Inspection>...

  • Page 27: Block Diagram (1 Of 3)

    9 Block Diagram 9.1. Block Diagram (1 of 3) A-BOARD 27MHz IFD1/2 TS Serial FRONT END Digital/Analog CLOCK Tuner 74MHz EEPROM EEPWP DDR2 SDRAM 27MHz IIC3 TV-V TS Serial HDMI1 TV-L,R RESET HDMI2 SWICH Digital Video signal FLASH HDMI3 MEMORY HUDSON2 RESET V,Y,C...

  • Page 28: Block Diagram (2 Of 3)

    9.2. Block Diagram (2 of 3) MONITOR OUT A-BOARD JK3005 IC4505 SUB5V Q4503 HDMI_5V_DET1 JK4501 +5V(HDMI) EEPROM DET1 EEPROM IC4003 HDMI1 DDC IIC1 EEPROM Video front-end, SUB9V IC4500 Audio processor, IC4501 IC4002 Q4502 IC4503 Micom,HDMI-Receiver M_OUT HDMI_5V_DET2 +5V(HDMI) JK4500 HDMI MULTIPLEXR IC4506 Analog Audio signal DET2...

  • Page 29: Block Diagram (3 Of 3)

    9.3. Block Diagram (3 of 3) A-BOARD IC2301 SOUND15V AUDIO AMP +15V L(+) SPEAKER(L) L(-) SPEAKER R(+) IC4007 R(-) SPEAKER(R) SUB3.3V SELECT D2251 OPT.Audio out IC8001 Peaks-Lite2p (MAIN MCU+VIDEO SIGNAL PROCESSOR) Digital Video signal SUB3.3V SD CARD SLOT HDMI_OPT_ENB Digital Audio signal AUIDO SPDIF +3.3V(S)

  • Page 31: Wiring Connection Diagram

    10 Wiring Connection Diagram 10.1. Caution statement. Caution: Please confirm that all flexible cables are assembled correctly. Also make sure that they are locked in the connectors. Verify by giving the flexible cables a very slight pull.

  • Page 32: Wiring (32 Inch)

    10.2. Wiring (32 inch)
  • Page 33 10.3. Wiring (26 inch)

  • Page 35: Schematic Diagram

    11 Schematic Diagram 11.1. Schematic Diagram Notes...
  • Page 36 11.2. P-Board (1 of 2) Schematic Diagram INVERTER P-BOARD TXN/P10NGCS (1/2) COLD COLD CF7000 D4CAY2R20001 390V C7005 *C7100 2200p 200V 470u D7003 D7124 B0FBAT000008 B0JBSL000024 *R7113 C7125 C7126 D7106 D7105 2200u 2200u R7171 Q7100 MA2J11100L MAZ82700ML 1/2W B1CERM000018 T7002 G4DYA0000132 D7092 8 NC B0JCPG000005...
  • Page 37 11.3. P-Board (2 of 2) and V-Board Schematic Diagram PANEL12V D7062 R7127 MA2J11100L 37.4k IC7112 R7126 7.15k C0DAAZG00014 D7064 R7138 D7066 MA2J11100L MA2J11100L TP7070 L7026 JS7062 R7152 R7135 R7102 R7115 < D7091 1/2W C7102 C7103 C7152 Q7022 B0HCMM000014 R7123 D7067 R7139 D7069 C7148...
  • Page 38 11.4. A-Board (1 of 8) Schematic Diagram IC8001 MN2WS0047 Peaks-Lite2 IC8002 POD,CI I/F LOSD OUT (for HQ1) FOR HQ1L VIDEO FOR ADV7493 B PORT (Sub Video Input or Address) C3ABSY000014 CPU BUS I/F TO 2/8 TO 8/8 TO 2/8 TO 2/8 DDR2 IC8001 VOP21...
  • Page 39 11.5. A-Board (2 of 8) Schematic Diagram SUB3.3V SUB5V R8661 R8663 R8505 TO 1/8 FACTORY USED TP8502 XECS4 EXB2HV560JV AA_ED0 XECS2 AA_ED1 TP8501 AA_SBI0 AA_ED2 SBI0 TP8500 AA_ED3 AA_SBO0 AA_ED4 SBO0 AA_ED5 AA_ED6 AA_ED7 AA_ED8 SUB3.3V AA_ED9 AA_ED10 ED10 AA_ED11 R8504 ED11 AA_ED12...
  • Page 40 11.6. A-Board (3 of 8) Schematic Diagram A-BOARD (3/8) TNPH0719S (32inch) TNPH0719ABS (26inch) POWER SUPPLY DTV12V L5604 L5605 G1C100MA0203 J0JHC0000075 C5619 C5611 C5631 C5632 R5637 R5622 100k TO 5/8 SUB1.8V/1.2V R5614 C5626 C5617 AG_TV_SUB_ON C5616 C5612 AG_TV_SUB_ON CUVP 0.1u R5630 C5624 TP5602 SUB1.8V...

  • Page 41: A-Board (4 Of 8) Schematic Diagram

    11.7. A-Board (4 of 8) Schematic Diagram JK3005 K2HA204A0038 A-BOARD (4/8) D3077 R2209 R2201 C2201 1.8k EZJZ0V120JA MON_L MOUT_L MON_L WHITE TNPH0719S (32inch) PROG OUT D3078 R2210 R2202 EZJZ0V120JA MON_R C2202 MOUT_R TNPH0719ABS (26inch) MON_R Q2201 1.8k D3051 2SD0601A0L EZJZ0V120JA TO 5/8 R2211 *Q2203...
  • Page 42 11.8. A-Board (5 of 8) Schematic Diagram A-BOARD (5/8) IC4002 SUB9V TNPH0719S (32inch) C0ABBB000230 C4014 TO 1/8 L4001 R4027 R4036 C4069 TNPH0719ABS (26inch) TO 4/8 J0JHC0000045 MOUT_L C4028 R4049 C4045 VI1P9 VI1P19 HUDSON2 MOUT_R VI1P9 UVIN9 VI1P19 YIN9 VI1P25 VI1P25 RIN3 180p 4.7u...
  • Page 43 11.9. A-Board (6 of 8) Schematic Diagram SUB5V C4526 C4520 C4522 C4523 6.3V 0.1u R4570 STB5V 38.3k TO 5/8 Vadj HDMI_MUX_SEL2 IC4506 HDMI_MUX_SEL2 R4571 HDMI_MUX_SEL1 C0CBCYE00001 HDMI_MUX_SEL1 HPD3 HPD3 HDMI3.3V DDC_SDA0 DDC_SDA0 DDC_SCL0 DDC_SCL0 HDMI_RXCN HDMI_RXCN C4532 HDMI_RXCP HDMI_RXCP HDMI_RX0N HDMI_RX0N HDMI_MUX_SEL2 HDMI_RX0P...
  • Page 44 11.10. A-Board (7 of 8) Schematic Diagram A-BOARD (7/8) TNPH0719S (32inch) TNPH0719ABS (26inch) Front End SUB5V TO 5/8 TU_AFT R8331 AG_RF_AFT1 L8308 J0JHC0000045 TP8300 TU_L_ANALOG R8300 RF_L R8313 5.0V TP8301 R8311 TU_R_ANALOG R8301 RF_R *Q8300 TP8302 B1ADCE000022 TU_V R8332 RF_V SUB1.2V SUB3.3V TU8300...
  • Page 45 11.11. A-Board (8 of 8) Schematic Diagram A-BOARD (8/8) TNPH0719S (32inch) TNPH0719ABS (26inch) Q4303 MHQICTRL9V SUB9V R4326 B1ADCE000022 *JS3077 INV PWM R4346 ZA4006 LVDS etc TESA169 ZA4007 R4348 TO 1/8 TESA169 R4345 ZA4008 IS0DATA TESA169 Q4302 AG_PWM_POW_ON ZA4009 2SD0601A0L R4347 TESA169 MHQICTRL9V L4313...

  • Page 46: Printed Circuit Board

    12 Printed Circuit Board 12.1. P-Board and V-Board P-BOARD (FOIL SIDE) TXN/P10NGCS TP7022 C7104 ZA7005 R7121 R7111 L7032 C7159 D7097 C7060 R7152 TP7055 R7069 R7120 C7117 D7101 C7102 R7112 D7066 D7045 C7163 C7051 TP7015 R7114 L7033 PA7001 R7144 C7050 R7091 TP7057 D7103 Q7009...
  • Page 47 P-BOARD (COMPONENT SIDE) TXN/P10NGCS C7104 SUB9V C7159 C7060 D7097 D7036 C7102 ZA7004 J119 IC7105 PA7001 C7130 J106 J131 J130 D7095 JS7075 J127 PA7002 C7113 J108 D7094 D7098 C7134 J117 J321 C7160 L7041 C7115 JS7066 J129 C7112 C7149 PA7003 JS7076 BT30V C7148 C7158 D7108...
  • Page 48 12.2. A-Board A-BOARD (FOIL SIDE) TNPH0719S(TC-32LX85) TNPH0719ABS(TC-26LX85) TNPH0719 B Q4308 TP8502 ZA4004 JS4002 JS4003 TP4811 TP4234 R4372 TP1222 FL4035 TP1223 FL4032 R8037 C8035 TP3002 TP4812 TP8501 TP8500 TP3001 C5631 C8013 C8014 R4366 C5632 L5605 R8074 TP2608 TP2606 TP2604 TP2602 TP2600...
  • Page 49 A-BOARD (COMPONENT SIDE) TNPH0719S(TC-32LX85) TNPH0719ABS(TC-26LX85) TNPH0719 A I C 8 0 0 2 A 1 6 C4717 C4719 C2693 C4716 C4718 FL2616 FL2615 FL2614 R8734 A 1 3 A 1 4 C2694 L4301 C2692 C4700 IC8002 I C 8 0 0 3...

  • Page 51: Exploded View And Replacement Parts List

    13 Exploded View and Replacement Parts List 13.1. Exploded View and Mechanical Replacement Parts List 13.1.1. Exploded View...

  • Page 52: Mechanical Replacement Parts List

    13.1.2. Mechanical Replacement Parts List...
  • Page 53 10030-0042000 BATTERY DOOR 1 PAVCA EAS16S07A SPEAKER W/BUSH K0RB00700010 CONTROL PANERL ASSY 1 CIRCUIT BOARD&PANEL PAVCA K1PY30Y00022 LVDS LEAD 1 PAVCA TC-26LX85 K1PY30Y00023 LVDS LEAD 1 PAVCA TC-32LX85 K2CB2YY00002 AC CORD 1 PAVCA TC-32LX85 K2CB2YY00003 AC CORD 1 PAVCA TC-26LX85...

  • Page 54: Electrical Replacement Parts List

    13.2. Electrical Replacement Parts List 13.2.1. Replacement Parts List Notes...
  • Page 55 13.2.2. Electrical Replacement Parts List Safety Ref. No. Part No. Part Name & Pcs Remarks Description Safety Ref. No. Part No. Part Name & Pcs Remarks C2332 ECJ2VB1C224K C 0.22UF, K, 16V Description 26LX85 C2335 F1H1E104A129 E 0.1UF, 25V TU8300 ENG36E15KF TUNER PAVCA...
  • Page 56 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C4088,89 F1G1C104A116 C 0.10UF, K, 16V C4761-63 F1H1H103A970 C 0.001UF, K, C4090-92 ECJ0EB1C103K C 0.010UF, K, C4771 F1G1H102A730 E 1000UF, 50V C4093 F1J0G2260001 C 0.001UF, 6.3V C4772...
  • Page 57 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C7062 F1G1C104A116 C 0.10UF, K, 16V C8056,57 F1G1C104A116 C 0.10UF, K, 16V C7065 F1J1C474A104 C 0.47UF, Z, 16V C8058 F1J1A106A043 C 0.010UF, K, C7088...
  • Page 58 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description D3815 EZJZ0V120JA VARISTOR PAVCA D7112 B0JAPK000011 DIODE D4000 MA2J72800L DIODE D7115 B0JAPK000011 DIODE D4001-03 MA2J11100L DIODE D7124 B0JBSL000024 DIODE PAVCA D4005 MA2J72800L...
  • Page 59 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description JS4007-10 D0YAR0000007 M 0.0 OHM, Q2203 B1ADCE000022 TRANSISTOR J,0.063W Q2350 2SD0601ARL TRANSISTOR JS7001 D0GDR00Z0002 M 0 OHM, 1/10W Q4000 2SB0709ARL TRANSISTOR...
  • Page 60 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R2640 ERJ2GEJ912 M 9.1KOHM, R4059 ERJ2GEJ221 M 220 OHM, J,0.063W J,0.063W R2641,42 ERJ2RHD682X M 22KOHM, J, 2W R4060 ERJ2GEJ102X M 1KOHM, J,0.063W...
  • Page 61 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R4138 ERJ2GEJ562 M 5.6KOHM, R4540 ERJ2GEJ473 M 47KOHM, J,0.063W J,0.063W R4139,40 ERJ2GEJ103 M 10KOHM, R4541-43 ERJ2GEJ680 M 68 OHM, J,0.063W J,0.063W R4143,44...
  • Page 62 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R5625-28 D0YAR0000007 M 0.0 OHM, R7103,04 ERJ6GEYF473 M 47KOHM,J,1/10W J,0.063W R7105 ERJ14YJ222 M 22KOHM, J,1/4W R5629 D1BB2802A055 M 28KOHM, 1/10W R7108,09 ERJ6GEYJ224 M 220KOHM,J,1/...
  • Page 63 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R8056-73 ERJ2GEJ470 M 47 OHM, R8505-07 D1HG5608A002 NETWORK RESISTER J,0.063W R8508 EXB2HV473JV RESISTOR ARRAY R8074 ERJ2GEJ221 M 220 OHM, R8509,10 D1HG5608A002 NETWORK RESISTER J,0.063W...
  • Page 64 Safety Ref. No. Part No. Part Name & Pcs Remarks Description RM1001 PNA4701M07TV REMOCON RECEIVER TNPH0719S CIRCUIT BOARD A PAVCA 32LX85 TNPH0719ABS CIRCUIT BOARD A PAVCA 26LX85 TXN/P10NGCS CIRCUIT BOARD P PAVCA TNPA4483S CIRCUIT BOARD V PAVCA T7001 ETS15AB136AH SWITCHING TRANS- FORMER T7002 G4DYA0000132 SWITCHING TRANS...

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