Panasonic TC-32LX85N Service Manual
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Panasonic TC-32LX85N Service Manual

Panasonic TC-32LX85N Service Manual

32 inch class lcd hdtv lh70 chassis
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32 inch Class LCD HDTV
TC-32LX85N
Model No.
LH70 Chassis
© 2008 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
ORDER NO.MTNC080638CE
B05 Canada: B07

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Summary of Contents for Panasonic TC-32LX85N

  • Page 1 ORDER NO.MTNC080638CE B05 Canada: B07 32 inch Class LCD HDTV TC-32LX85N Model No. 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. Important Notice This service manual is for MANUFACTURING ID NO. TC-32LX85N as indicated in the label at the model name plate of the unit. 3.2. Service Hint Board Name Function A-Board Rear Terminal, AV Switch, MCU, Audio & Video...

  • Page 6: Applicable Signals

    3.3. Applicable signals * Mark: Applicable input signal for Component (Y, P ) and HDMI horizontal frequency (kHz) vertical frequency (kHz) COMPONENT HDMI 525 (480) / 60i 15.73 59.94 525 (480) /60p 31.47 59.94 750 (720) /60p 45.00 59.94 1,125 (1,080) /60i 33.75 59.94 Note:...

  • Page 7: Specifications

    4 Specifications Power Source AC 120 V, 60 Hz Power Consumption Maximum 142 W Standby Condition 0.6 W Display panel Aspect Ratio 16:9 Visible screen size 32 inch class (31.5 inches measured diagonally) (W × H × Diagonal) 27.5 inch × 15.4 inch × 31.5 inch (698 mm × 392 mm × 800 mm) 1,049,088 (1,366 (W) ×...

  • Page 8: 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 9: Power On Time/Count

    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 10: 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 11: 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 12: 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 13 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 14: Rear Cover

    7 Disassembly and Assembly Instructions 7.1. Rear cover 7.3. AC cord 1. Remove the 17 screws (A). 1. Remove the bushing of the AC cord from the tuner cover. 2. Remove the 3 screws (B), 2. Disconnect the connector (P1) of AC cord. 3.

  • Page 15: Control Panel Assy

    7.5. Control panel assy 7.7. P-Board 1. Disconnect the connector (A7). 1. Remove the 7 screws. 2. Remove the 2 screws. 2. Disconnect the connectors (P3/P7). 3. Remove the control panel assy. 3. Remove the P-Board. 7.6. Side AV bracket and Inverter shield 7.8.

  • Page 16: Chassis Frame

    7.9. V-Board 7.11. LCD MTG and Speaker 1. Remove the 2 screws. 1. Remove the 8 screws (G). 2. Disconnect the connector (V1). 2. Remove the 4 screws (H) 3. Remove the V-Board. 3. Remove the LCD MTG and Speaker. 4.

  • Page 17: Emi Processing

    7.12. EMI processing...

  • Page 21: 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 22: 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 23: Block Diagram

    SUB+1.8V PANEL TV_SOS TV_SOS BACK LIGHT +24V MAIN VOLTAGE OVP_DET INV SOS RECTIFIER INVERTER CIRCUIT DCDC SUB+5V NOISE FILTER SUB+5V PANEL_ON SWITCH PANEL+12V PANEL+12V +12V DTV+12V SUB+9V DCDC SUB+9V AC CORD +24V TC-32LX85N TC-32LX85N Block (1/3) Diagram Block (1/3) Diagram...
  • Page 24 R7053 IC7100 PC7100 C7044 POWER CONTROL IC R7050 NOISE LF7001 FILTER LF7002 IC7101 Norm ERROR DET R7054 high F7001 SHORT SOS Q7022 (LED (LED 3 TIMES) 3 TIMES) AC CORD AC120V 50/60Hz TC-32LX85N TC-32LX85N Block (2/3) Diagram Block (2/3) Diagram...
  • Page 25 SUB1.8V PANEL_ON IC5017 RESET IC4008 BUFFER INV_SOS LCD PANEL PANEL+12V PANEL PANEL CONTROL BACK LIGHT LVDS INV_ON INV_ON ADIM CURRENT INVERTER CIRCUIT INV_PWM INV+24V INV_PWM INV_SOS INV_SOS INV_SOS INV_SOS (LED 1 TIME) TC-32LX85N TC-32LX85N Block (3/3) Diagram Block (3/3) Diagram...

  • Page 27: 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 28 10.2. Wiring...

  • Page 29: Schematic Diagram

    11 Schematic Diagram 11.1. Schematic Diagram Notes...
  • Page 30 *R7162 C0DAEMZ00001 *C7153 *R7164 SHUNT REG 4.7k *Q7056 *Q7055 2SB0709ASL 2SB0709ASL *R7163 *R7165 COLD 4.7k *R7166 4.7k *R7143 *Q7054 *Q7057 *R7168 2SD0601ASL 2SD0601ASL *C7109 *R7161 *C7155 *R7167 4.7k AC CORD TC-32LX85N TC-32LX85N P-Board (1/2) Schematic Diagram P-Board (1/2) Schematic Diagram...
  • Page 31 RM1001 R7069 R_LED_ON PNA4701M07TV 37.4k C7060 470u C7057 R1028 220u 0.01u R7070 R1022 P-BOARD TXN/P10NGCS (2/2) C1006 C1007 R1029 6.3V 0.01u R1010 Q1006 2SD0601A0L R1008 JS1002 TC-32LX85N TC-32LX85N P-Board (2/2) and V-Board Schematic Diagram P-Board (2/2) and V-Board Schematic Diagram...
  • Page 32 MMDQ29 AA16 IC8001 0.1u 0.1u 0.1u IC8001 LVVDD12 R8020 CH0DQ30 IC8001 IC8001 AF21 MMDQ30 AD16 IC8001 R8021 CH0DQ31 C8076 C8075 IC8001 IC8001 AF24 MMDQ31 AF16 IC8001 C8080 R8022 0.1u 0.1u TC-32LX85N TC-32LX85N A-Board (1/8) Schematic Diagram A-Board (1/8) Schematic Diagram...
  • Page 33 TO 1/8 TP8548 AD_TCK TP8544 AD_TMS AD_TMS R8528 C8537 AD_TRST TP8547 AD_TRST TP8545 R8529 TRST AD_TO_BA01 R8530 2.2u TP8546 AD_TO_BA01 AD_TCK R8532 R5137 R5058 R5069 W.P. D.SW K1NA09E00080 SD CARD SLOT TC-32LX85N TC-32LX85N A-Board (2/8) Schematic Diagram A-Board (2/8) Schematic Diagram...
  • Page 34 12.7k ILIM OUT-2 D5605 F1J1A1050020 VJUMP1005-P MA22D3900L SUB9V R5612 +INC PGND TP3002 -INC DTV12V TP3017 TP3007 FL4703 F1J1A1050020 DTV12V PNL12V DTV12V L4704 J0JHC0000078 PANEL12V TP3001 PANEL12V C4660 C4659 0.1u 0.1u TC-32LX85N TC-32LX85N A-Board (3/8) Schematic Diagram A-Board (3/8) Schematic Diagram...
  • Page 35 Q2102 R2103 100k B1ABCF000231 R2106 Q2104 D2103 100k MA2J11100L JS2101 B1ADCE000022 VJUMP1005-P Q2101 R2101 B1ABCF000231 R2102 R2107 MUTE D2101 MA2J11100L OPERATE R2104 AG_AUDIO_MUTE R2108 Q2103 100k B1ABCF000231 R2105 MUTE OPERATE TC-32LX85N TC-32LX85N A-Board (4/8) Schematic Diagram A-Board (4/8) Schematic Diagram...
  • Page 36 C4798 J0JAD0000028 0.1u 0.1u 0.1u 1000p 1000p 1000p 1000p 1000p 1000p 1000p 1000p 1000p 1000p 1000p Rx3- TD1N Rx3+ TD1P Rx4- TE1N Rx4+ TE1P TP4812 TO 1/8 R4369 VI2P20 TP4234 TC-32LX85N TC-32LX85N A-Board (5/8) Schematic Diagram A-Board (5/8) Schematic Diagram...
  • Page 37 1 VSS C4008 Q4000 SPDIF_HUD R4001 SW_RST 100p R4032 DTV12V B1ADCE000022 R4039 R4004 R4152 AG_KEY3 DTV12V_SENSE R4025 C4000 Q4003 R4000 R4002 100k R4151 1000p B1ABCF000231 C4086 C4083 AG_KEY3_HUD R4031 100k TC-32LX85N TC-32LX85N A-Board (6/8) Schematic Diagram A-Board (6/8) Schematic Diagram...
  • Page 38 L4502 N.C. J0JHC0000078 R4508 RXB_CN CLK- TP4511 CLKG R4552 R4509 RXB_CP CLK+ R4510 RXB_0N R4511 RXB_0P R4512 RXB_1N D4628 R4513 RXB_1P EZAEG2A50AX R4514 RXB_2N A-BOARD TNPH0757S (7/8) R4515 RXB_2P HDMI TC-32LX85N TC-32LX85N A-Board (7/8) Schematic Diagram A-Board (7/8) Schematic Diagram...
  • Page 39 0.1u 0.01u 0.1u 0.01u 0.1u C8338 0.1u C8339 0.1u C8340 BT30V 0.1u C8370 C8371 C8380 1000p 0.1u 0.01u C8343 C8345 C8349 C8351 C8353 0.1u 0.1u 0.1u 0.1u 0.1u C8346 0.01u TC-32LX85N TC-32LX85N A-Board (8/8) Schematic Diagram A-Board (8/8) Schematic Diagram...

  • Page 40: Printed Circuit Board

    Q7028 TP7054 Q7054 LF7001 LF7002 TP7055 Q7055 TP7056 Q7056 TP7057 Q7057 Q7027 TP7058 Q7058 TP7059 Q7059 TP7061 Q7060 R7000 TP7070 D7011 Q7100 TP7071 Q7101 Q7028 TP7072 Q7112 Q7115 D7017 R7008 TC-32LX85N TC-32LX85N P-BOARD TXN/P10NGCS P-BOARD TXN/P10NGCS V-BOARD TNPA4483ACS V-BOARD TNPA4483ACS...
  • Page 41 Q7101 D7003 J415 FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE ONLY WITH "Littel fuse " TYPE " 215 ". CF7000 J409 T5AH 250V LF7001 F7001 LF7002 C7003 R7000 RL7005 TC-32LX85N TC-32LX85N P-BOARD TXN/P10NGCS P-BOARD TXN/P10NGCS V-BOARD TNPA4483ACS V-BOARD TNPA4483ACS...
  • Page 42 I F D O U T 2 I F D O U T 2 R4026 TP4002 TP4001 R4025 Q 4 0 0 3 C4013 R4031 TP4004 D2251 JK3001 D 2 2 5 1 J K 3 0 0 1 TC-32LX85N TC-32LX85N A-BOARD TNPH0757S A-BOARD TNPH0757S...
  • Page 43 I F D O U T 2 JS3078 JS3077 D2251 JK3001 T N P H 0 7 5 7 1 A C4004 S3020 FL3030 FL3031 R2251 R2252 C2251 J K 3 0 0 1 C4773 D3052 TC-32LX85N TC-32LX85N A-BOARD TNPH0757S A-BOARD TNPH0757S...

  • Page 45: 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 46: Mechanical Replacement Parts List

    13.1.2. Mechanical Replacement Parts List...
  • Page 47 Ref. Safety Part No. Part Name & Description Q'ty Remarks 10030-0042000 BATTERY DOOR 1 PAVCA EAS16S07AS SPEAKER W/BUSH K0RB00700010 CONTROLE PANEL ASSY 1 CIRCUIT BOARD&PANERL PAVCA K1PY30Y00023 LVDS LEAD 1 PAVCA K2CB2YY00002 AC CORD 1 PAVCA L5EDD8Q00043 LCD PANEL 1 PAVCA N2QAYB000221 REMOTE CONTROL 1 PAVCA...

  • Page 48: Electrical Replacement Parts List

    13.2. Electrical Replacement Parts List 13.2.1. Replacement Parts List Notes...
  • Page 49 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 C4030 F2G0G101A007 E 100UF 6.3V Description C4031,32 F1G1C104A116 C 0.10UF, K, 16V C4033 F1G1C1030008 C 0.010UF, K, K1KB30B00044 30P CONNECTOR K1KY23AA0607 23P CONNECTOR C4036...
  • Page 50 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C4522 F1H0J1050012 C 1UF, K, 16V C5628,29 ECGRL0G680ER C 68PF, J, 4V C4523 EEEHB0G470R C 47PF, J, 4V C5631 F2G1C470A022 E 47UF, 16V C4526-30...
  • Page 51 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C7148 F2A1H221A115 E 220UF, 50V C8345 F1G1C104A116 C 0.10UF, K, 16V C7149 F2A1E471A102 E 470UF, 25V C8346 F1G1C1030008 C 0.010UF, K, C7150 F1J1H682A834 C 6800UF, 50V PAVCA...
  • Page 52 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description D7003 B0FBAT000008 DIODE IC7001 C0DAEMZ00001 IC IC7005 C0DBAFG00018 IC D7004 B0BA01600007 ZENER DIODE PAVCA IC7006 C0CBCYE00001 IC D7005 B0BA03600021 ZENER DIODE IC7100 C0DABYY00014 IC...
  • Page 53 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R2302 D1BB6192A055 M61.9KOHM, 1/10W PAVCA Q1006 2SD0601ARL TRANSISTOR R2303,04 ERJ3EKF2212 M 22KOHM, 1/16W Q2101-03 B1ABCF000231 TRANSISTOR R2350,51 ERJ2GEJ103 M 10KOHM, J,0.063W Q2104,05...
  • Page 54 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R4058 ERJ2GEJ473 M 47KOHM, R4138 ERJ2GEJ562 M 5.6KOHM, J,0.063W J,0.063W R4059 ERJ2GEJ221 M 220 OHM, R4139,40 ERJ2GEJ103 M 10KOHM, J,0.063W J,0.063W R4060...
  • Page 55 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R4552 ERJ2GEJ220 M 22 OHM, R5647 ERJ2GEJ473 M 47KOHM, J,0.063W J,0.063W R4561 ERJ2GEJ473 M 47KOHM, R5747 ERJ2GEJ103 M 10KOHM, J,0.063W J,0.063W R4564,65...
  • Page 56 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R7126 ERJ6ENF7151 M7.15KOHM, 1/10W R8101 ERJ2GEJ103 M 10KOHM, J,0.063W R7127 ERJ6ENF3742 M37.4KOHM, 1/10W R8106 ERJ2GEJ202 M 2KOHM, R7128 D0GDR00Z0002 M 0 OHM, 1/10W J,0.063W R7129...
  • Page 57 Safety Ref. No. Part No. Part Name & Pcs Remarks Description R8589 ERJ2GEJ473 M 47KOHM, J,0.063W R8593 ERJ2GEJ473 M 47KOHM, J,0.063W R8597-01 ERJ2GEJ473 M 47KOHM, J,0.063W R8602 ERJ2GEJ222 M 2.2KOHM, J,0.063W R8604 ERJ2GEJ103 M 10KOHM, J,0.063W R8661 ERJ2GEJ103 M 10KOHM, J,0.063W R8663 ERJ2GEJ103...

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