Panasonic TC-L37X1 Service Manual
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Panasonic TC-L37X1 Service Manual

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37 inch/32 inch Class 720p LCD HDTV
Model No.
LH90 Chassis
© Panasonic Corporation 2009.
Unauthorized copying and distribution is a violation
of law.
ORDER NO.MTNC090212CE
TC-L32X1
TC-L37X1
B05 Canada: B07

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Summary of Contents for Panasonic TC-L37X1

  • Page 1 ORDER NO.MTNC090212CE B05 Canada: B07 37 inch/32 inch Class 720p LCD HDTV TC-L32X1 Model No. TC-L37X1 LH90 Chassis © Panasonic Corporation 2009. Unauthorized copying and distribution 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 Switch, MCU, Audio & Video Processor, LVDS, Tuner V-Board Remote Receiver, LED P-Board Power (AC/DC), DC-DC None serviceable P-Board should be exchanged for service. Control Panel Assy Control Button, Power switch None serviceable Control Panel Assy should be exchanged for service.

  • Page 6: Specifications

    27.5 inch × 15.4 inch × 31.5 inch (698 mm × 392 mm × 800 mm) (TC-L32X1) 32.2 inch × 18.1 inch × 37.0 inch (819 mm × 460 mm × 940 mm) (TC-L37X1) 1,049,088 (1,366 (W) × 768 (H)) [4,098 × 768 dots] (No.

  • 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 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. Pedestal 7.3. AC cord 1. Lay down the unit so that the rear cover faces upward. 1. Remove the screw and Remove the AC cord bracket. 2. Remove the 4 screws. 2. Remove the bushing of the AC cord from the AC cord 3.

  • Page 14: Side Av Bracket

    7.4. P-Board 7.5. Side AV bracket 1. Remove the 2 (37 inch) / 5 (32 inch) screws. 1. Remove the 1 screw (C). 2. Disconnect the connectors (P1, P2, P3, P4, P5, P6). 2. Remove the 1 screw (D). 3. Remove the P-Board. 3.

  • Page 15: Control Panel

    7.7. Control panel 7.9. A-P-MTG Metal (32 inch only) 1. Disconnect the connector (K1). 1. Remove the 6 screws. 2. Remove the 2 screws. 2. Remove the A-P-MTG metal R/L/S. 3. Remove the control panel. 7.8. Speaker 1. Remove the 4 screws. 2.

  • Page 16: Vesa Metal

    7.11. P PCB plastic frame 7.13. LCD MTG (37 inch only) 1. Remove the 4 screws (G). 2. Remove the 4 screws (H). 1. Remove the 4 screws. 3. Remove the LCD BTM MTG and LCD bottom corner 2. Remove the P PCB plastic frame. BTG.
  • Page 17 7.15. V-Board 1. Remove the 1 screw. 2. Disconnect the connector (V10). 3. Remove the V-Board.

  • Page 18: Emi Processing (37 Inch)

    7.16. EMI processing (37 inch)

  • Page 22: Emi Processing (32 Inch)

    7.17. EMI processing (32 inch)

  • Page 25: Measurements And Adjustments

    8 Measurements and Adjustments 8.1. Voltage chart of A-board VOLTAGE TEST POINT SPECIFICATION (Reception state) STB3.3V TP2843 3.3 ± 0.16 V STB1.8V TP7006 1.84 ± 0.09 V SUB1.2V TP5602 1.26 ± 0.06 V SUB1.8V TP5601 1.84 ± 0.09 V SUB3.3V TP5600 3.3 ±...

  • Page 26: Picture Level Adjustment (Video)

    8.3. Picture level adjustment (VIDEO) Instrument Name Remarks 1. REMOTE TRANSMITTER 2. Video signal generator (100% Color bar) Adjustment or Inspection Procedure Remarks <procedure> 1. Receive 100% Color bar. (ASPECT: ZOOM or FULL, Picture mode: VIVID, AI Picture: OFF) * BACK LIGHT MAX VALUE <Inspection>...
  • Page 27 9 Block Diagram 9.1. Main Block Diagram...
  • Page 28 9.2. Block (1/2) Diagram...
  • Page 29 9.3. Block (2/2) Diagram...

  • 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. 10.2. Wiring (32 inch)

  • Page 32: Wiring (37 Inch)

    10.3. Wiring (37 inch)
  • Page 33 11 Schematic Diagram 11.1. Schematic Diagram Notes...
  • Page 34 11.2. A-Board (1/10) Schematic Diagram...
  • Page 35 11.3. A-Board (2/10) Schematic Diagram...
  • Page 36 11.4. A-Board (3/10) Schematic Diagram...
  • Page 37 11.5. A-Board (4/10) Schematic Diagram...
  • Page 38 11.6. A-Board (5/10) Schematic Diagram...
  • Page 39 11.7. A-Board (6/10) Schematic Diagram...
  • Page 40 11.8. A-Board (7/10) Schematic Diagram...
  • Page 41 11.9. A-Board (8/10) Schematic Diagram...
  • Page 42 11.10. A-Board (9/10) Schematic Diagram...
  • Page 43 11.11. A-Board (10/10) Schematic Diagram...
  • Page 44 11.12. V-Board Schematic Diagram...
  • Page 45 12 Printed Circuit Board 12.1. A-Board A-BOARD (FOIL SIDE) TXN/A10NCSS(32 inch) TXN/A10PTGS(37 inch) TP4209 TP4234 TP1220 R8722 R8721 C4252 R4359 TP4237 TP8501 TP8500 TP8502 R4214 R4358 C4718 TP1223 C4777 ZA5409 C4700 TP1222 R4405 TP4208 TP8516 TP4239 TP4856 TP4221 TP4219 TP4217 TP4215 TP4213 TP1221...
  • Page 46 Parts Location Parts Location A-BOARD (FOIL SIDE) A-BOARD (COMPONENT SIDE) TRANSISTOR TRANSISTOR IC3100 Q4004 IC2301 Q2033 IC3200 Q4005 IC3201 Q2035 IC4500 Q4007 IC3202 Q2036 IC4501 Q4201 IC4001 Q2040 IC4505 Q4502 IC4003 Q2101 IC4506 Q4503 IC4004 Q2106 IC4700 Q4602 IC4005 Q2350 IC5480 Q4607 IC4007...
  • Page 47 A-BOARD (COMPONENT SIDE) TXN/A10NCSS(32 inch) TXN/A10PTGS(37 inch) C5702 C5701 R4406 R8566 A 2 0 A 1 1 C8379 C4720 C4251 R4329 R4401 R4403 ZA5408 R4305 PA4201 C4785 C4250 R4216 FL4201 FL4202 FL4203 C8506 C4241 Q4807 R4565 IC8503 R4141 R8555 R8557 R4328 Q4800 R4564...
  • Page 48 12.2. V-Board V-BOARD (FOIL SIDE) TNPA4834ABS T P 5 0 7 T P 5 0 2 T P 5 0 4 T P 5 0 1 P b F TNPA4834 1 S E E R E V E R S E F O R S U F F I X .

  • Page 49: 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 50 13.1.2. Accessory...
  • Page 51 13.1.3. Mechanical Replacement Parts List...
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  • 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 C3216,17 F1J1A106A043 C 0.010UF, K, Description C3218 F1G1H101A731 C 100PF, K, 50V K1FY124D0001 12P CONNECTOR PAVCA C3219 F1G1H330A731 C 33UF, 50V...
  • Page 56 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C4239,40 F1J1A106A043 C 0.010UF, K, C5488 F1G1C473A081 C 0.047UF, K, C4241 F2G0J220A019 E 100UF 6.3V C5489 F1J1A106A043 C 0.010UF, K, C4243 F1G1C104A116 C 0.10UF, K, 16V C5492...
  • Page 57 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C8035,36 F1J1A106A043 C 0.010UF, K, D3050 K7AAAY000005 PHOTO LINK D3064,65 EZJP0V080GA VARISTOR C8037-41 F1G1C104A116 C 0.10UF, K, 16V D3101-03 EZJP0V080GA VARISTOR...
  • Page 58 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description IC5600,01 C0DBAYY00480 IC Q4007 B1ABCF000231 TRANSISTOR IC7005 C0DBAFG00018 IC Q4201 B1ABCF000231 TRANSISTOR IC7006 C0CBCYE00001 IC Q4202 B1ADCE000022 TRANSISTOR IC8001 MN2WS0047 Q4203...
  • Page 59 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R3175,76 ERJ6RED750 M 75 OHM, 1/10W R4012 ERJ2GEJ474 M 470KOHM, J,0.063W R3178 ERJ6RED750 M 75 OHM, 1/10W R4014 ERJ2GEJ101 M 100 OHM, R3200,01...
  • Page 60 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R4102 ERJ2GEJ103 M 10KOHM, R4317,18 ERJ2GEJ103 M 10KOHM, J,0.063W J,0.063W R4103-07 ERJ2GEJ473 M 47KOHM, R4319 ERJ2GEJ473 M 47KOHM, J,0.063W J,0.063W R4108...
  • Page 61 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R4639 ERJ2GEJ680 M 68 OHM, R5499 ERJ2GEJ472 M 4.7KOHM, J,0.063W J,0.063W R4640,41 ERJ2GEJ220 M 22 OHM, R5500 ERJ2GEJ473 M 47KOHM, J,0.063W J,0.063W...
  • Page 62 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R8098,99 ERJ2GEJ103 M 10KOHM, R8554,55 ERJ2GEJ220 M 22 OHM, J,0.063W J,0.063W R8100 ERJ2GEJ470 M 47 OHM, R8556 ERJ2GEJ103 M 10KOHM, J,0.063W J,0.063W...
  • Page 63 Safety Ref. No. Part No. Part Name & Pcs Remarks Description ZA5400-03 TESA169 SHIELD CLIP ZA5409-11 TESA169 SHIELD CLIP...
  • Page 64 If new part numbers are shown, be sure to use them when ordering parts. Please file and use this manual together with the service manual for Model No. TC-L32X1,TC-L37X1 : ORDER NO. MTNC090212CE Reason for Change *The circled item indicates the reason. If no marking, see the Notes in the bottom column.
  • Page 65 If new part numbers are shown, be sure to use them when ordering parts. Please file and use this manual together with the service manual for Model No. TC-L32X1,TC-L37X1 : ORDER NO. MTNC090212CE Reason for Change *The circled item indicates the reason. If no marking, see the Notes in the bottom column.
  • Page 66 If new part numbers are shown, be sure to use them when ordering parts. Please file and use this manual together with the service manual for Model No. TC-L32X1,TC-L37X1 : ORDER NO. MTNC090212CE Model No. TC-L37S1,TC-L32S1 : ORDER NO. MTNC090213CE Model No.

  • Page 67: Remote Control

    Interchangeability Code **The circled item indicates the interchangeability. If no marking, see the Notes in the bottom column. Parts Set Production C Original Early New parts only may be used in early or late production sets. Late Stock new parts. D Original Early Original parts may be used in early production sets only.

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