Panasonic TC-L55WT50 Service Manual
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Panasonic TC-L55WT50 Service Manual

55 inch class 1080p lcd hdtv
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See also: Owner's Manual
55 inch Class 1080p LCD HDTV
TC-L55WT50
Model No.
LA34 Chassis
© Panasonic Corporation 2012.
Unauthorized copying and distribution is a violation
of law.
Ver.1
ORDER NO.MTNC120562CE
B32 Canada: B61

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  • Page 1 ORDER NO.MTNC120562CE B32 Canada: B61 55 inch Class 1080p LCD HDTV TC-L55WT50 Model No. LA34 Chassis © Panasonic Corporation 2012. Unauthorized copying and distribution is a violation of law. Ver.1...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions -----------------------------------------------3 1.1. General Guidelines ----------------------------------------3 2 Warning --------------------------------------------------------------4 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices ----------4 2.2. About lead free solder (PbF) ----------------------------5 3 Service Navigation------------------------------------------------6 3.1. PCB Layout --------------------------------------------------6 4 Specifications ------------------------------------------------------7 5 Technical Descriptions------------------------------------------8 5.1.

  • Page 3: 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 4: Warning

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

  • Page 5: 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 6: Service Navigation

    3 Service Navigation 3.1. PCB Layout Board Name Function A-Board Main K-Board LED, Cat's eye P-Board Power supply, Power switch, Control Button Non serviceable. P-Board should be exchanged for service. LP-Board LOGO LED LD-Board LED Drive...

  • Page 7: Specifications

    Bluetooth Frequency Range 2,402 GHz - 2,480 GHz • Use Panasonic 3D Eyewear supporting Bluetooth wireless technology. • Up to 5 devices can be used simultaneously (except the Touch Pad Controller and the 3D Eyewear). Note Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.

  • Page 8: Technical Descriptions

    5 Technical Descriptions 5.1. Specification of KEY for DTCP-IP, WMDRM and Widevine 5.1.1. General information: 1. EEPROM (IC8902) for spare parts has the seed of KEY for each DTCP-IP for DLNA, WMDRM for Netflix and Widevine for CinemaNow. 2. The final KEY data will be generated by Peaks IC (IC8000) when SELF CHECK was done and are stored in both Peaks IC (IC8000) and EEPROM (IC8902).

  • Page 9: Service Mode

    6 Service Mode 6.1. How to enter into Service Mode 6.1.1. Purpose After exchange parts, check and adjust the contents of adjustment mode. While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds. 6.1.2.

  • Page 10: Srv-Tool

    6.2. SRV-TOOL 6.2.1. How to access 1. Select [SRV-TOOL] in Service Mode. 2. Press [OK] button on the remote control. 6.2.2. 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 shipment setting].

  • Page 11: Hotel Mode

    6.3. 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: Input Select input signal modes. While pressing [VOLUME (-)] button of the main unit, Set the input, when each time power is switched on.

  • Page 12: Data Copy By Sd Card

    6.4. Data Copy by SD Card 6.4.1. Purpose (a) Board replacement (Copy the data when exchanging A-board): When exchanging A-board, the data in original A-board can be copied to SD card and then copy to new A-board. (b) Hotel (Copy the data when installing a number of units in hotel or any facility): When installing a number of units in hotel or any facility, the data in master TV can be copied to SD card and then copy to other TVs.
  • Page 13 6.4.3. Data copy from TV set to SD Card 1. Turn on the TV set. 2. Insert SD card with a startup file (pwd file) to SD slot. On-screen Display will be appeared according to the startup file automatically. 3. Input a following password for (a) or (b) by using remote control. (a) For Board replacement : 2770 (b) For Hotel : 4850 Data will be copied from TV set to SD card.
  • Page 14 6.4.4. Data copy from SD Card to TV set 1. Turn on the TV set. 2. Insert SD card with Data to SD slot. On-screen Display will be appeared according to the Data folder automatically. 3. Input a following password for (a) or (b) by using remote control. (a) For Board replacement : 2771 (b) For Hotel : 4851 Data will be copied from SD card to TV set.

  • Page 15: Troubleshooting Guide

    7 Troubleshooting Guide Use the self-check function to test the unit. 1. Checking the IIC bus lines 2. Power LED Blinking timing 7.1. Check of the IIC bus lines 7.1.1. 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 16: Power Led Blinking Timing Chart

    7.2. 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. Blinking Times Contents Check point...

  • Page 17: Disassembly And Assembly Instructions

    8 Disassembly and Assembly Instructions 8.1. Disassembly Flow Chart for the Unit This is a disassembly chart. When assembling, perform this chart conversely. 8.2. Disassembly Procedure for the Unit 8.2.1. Pedestal 8.2.2. WiFi dongle 1. Lay down the unit so that the rear cover faces upward. 1.

  • Page 18: Rear Cover

    8.2.3. BT dongle 8.2.5. P-Board 1. Remove the 1 screw. 1. Remove the 1 screw and 1 tab. 2. Remove the BT dongle. 2. Remove the key button. 3. Remove the 6 screws. 4. Disconnect the connectors (P2 and P4). 8.2.4.
  • Page 19 8.2.6. A-Board 5. Remove the 3 screws. 6. Disconnect the connectors (A02, A10, A12 ,A16 ,A20 and 1. Remove the 2 screws. A21). 2. Remove the metal AV bracket bottom. 7. Remove the A-Board. 8.2.7. LD-Board 3. Remove the 1 screw. 1.
  • Page 20 8.2.8. LP-Board 8.2.9. K-Board 1. Remove the 1 screw (A). 1. Remove the bottom cover L assy. 2. Remove the 8 screws (B). 3. Remove the metal bracket bottom. 2. Disconnect the connector (K10). 3. Remove the K-Board. 4. Remove the bottom cover C. 8.2.10.
  • Page 21 8.2.12. Speaker thin box 2. Disconnect the connector (RM10). 3. Remove the IR Receiver. 1. Remove the speaker thin box. 8.2.13. Connector bracket BT 1. Remove the 2 tabs and the connector bracket BT. 8.2.11. Speaker SQ 1. Remove the 4 screws. 2.
  • Page 22 8.2.15. Rear Panel T/L/R assy 1. Remove the 6 screws and Rear Panel T/L/R assy. 8.2.16. Rear Panel B assy and LCD Panel 1. Remove the 2 screws. 2. Remove the Rear Panel B assy and the LCD Panel.
  • Page 23 EMI processing 8.2.17.

  • Page 32: Measurements And Adjustments

    9 Measurements and Adjustments 9.1. Voltage chart of A-board VOLTAGE TEST POINT SPECIFICATION PANEL12V TP4004/TP4005 11.5V - 12.9V USB_5V TP5440 4.94V - 5.40V SUB5V TP5420 5.05V - 5.40V SUB3.3V TP5400 3.17V - 3.43V SUB1.8V TP8700 1.7V - 1.9V SUB1.5V TP8101 1.435V - 1.585V SUB1.1V TP8100...

  • Page 33: Block Diagram

    10 Block Diagram 10.1. Main Block Diagram MAIN NAND NAND FLASH SD CARD DATA SD IF SD CARD SLOT SD3.3V IFD_OUT DDR3 TUNER SUB5V Peaks PEAKS_EEPROM SUB1.1V PRO4 SUB1.5V OVP DET SUB3.3V Y/PB/PR RGB/YPbPr/CVBS SUB_AI_3.3V USB5V V/COMP HS,VS AV SW SUB9V P15V R/G/B/H/V...

  • Page 34: Block (1/2) Diagram

    10.2. Block (1/2) Diagram JK3005B JK3001 PC IN COMPONENT/VIDEO MAIN POWER SUPPLY COLD COLD POWER SW KEY3(POWER ON) KEY3 KEY1 KEY1 CONTROL PANEL KEY POWER CIRCUIT TRANS MODULE CURRENT DETECT CONTROL P15V IC3001 VOLTAGE +16V DETECT IIC3 AV SW IIC3 +16V VOLTAGE /CURRENT...

  • Page 35: Block (2/2) Diagram

    10.3. Block (2/2) Diagram CN8660 SPEAKER_R SPEAKER_L WOOFER SD CARD D3006 JK8450 JK8451 JK8452 JK8600A JK4701D JK4700D JK4702D JK4703D FACTORY DIGITAL BLUETOOTH USB1 USB2 USB3 WiFi ETHERNET AUDIO OUT HDMI2 HDMI1 HDMI3 HDMI4 MAIN MAIN CN0100 BT3.3V DMC_IIC0 IIC0 IIC1 STM_IIC SBO0/SBI0 IC8600...

  • Page 37: Wiring Connection Diagram

    11 Wiring Connection Diagram 11.1. 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. 11.2. Wiring 1...

  • Page 38: Wiring

    11.3. Wiring 2...

  • Page 39: Wiring

    11.4. Wiring 3...
  • Page 40 Model No. : TC-L55WT50 Schematic Diagram Note...
  • Page 41 Model No. : TC-L55WT50 Replacement Parts List Note...
  • Page 42 Model No. : TC-L55WT50 A-Board (1/8)
  • Page 43 Model No. : TC-L55WT50 A-Board (2/8)
  • Page 44 Model No. : TC-L55WT50 A-Board (3/8)
  • Page 45 Model No. : TC-L55WT50 A-Board (4/8)
  • Page 46 Model No. : TC-L55WT50 A-Board (5/8), K-Board and LP-Borad...
  • Page 47 Model No. : TC-L55WT50 A-Board (6/8)
  • Page 48 Model No. : TC-L55WT50 A-Board (7/8)
  • Page 49 Model No. : TC-L55WT50 A-Board (8/8) S-10...
  • Page 50 Model No. : TC-L55WT50 LD-Board S-11...
  • Page 51 Model No. : TC-L55WT50 A-Board (Foil Side) S-12...
  • Page 52 Model No. : TC-L55WT50 A-Board (Component Side) S-13...
  • Page 53 Model No. : TC-L55WT50 K-Board S-14...
  • Page 54 Model No. : TC-L55WT50 LP-Board S-15...
  • Page 55 Model No. : TC-L55WT50 LD-Board S-16...
  • Page 56 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks N0AE3HJ00015 POWER SUPPLY 1 PAVCA TXN/A1RKUUS CIRCUIT BOARD A 1 (RTL) PAVCA TXN/K1RNUUS CIRCUIT BOARD K 1 (RTL) PAVCA TXNLD1RMUUS CIRCUIT BOARD LD 1 (RTL) PAVCA...
  • Page 57 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C4921 F1J1E105A287 C 1UF, 25V 1 PAVCA C4922 F1J1E105A287 C 1UF, 25V 1 PAVCA C4923 F1J1E105A287 C 1UF, 25V 1 PAVCA C4924 F1J1E105A287 C 1UF, 25V...
  • Page 58 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C6744 F1G1C104A077 C 0.1UF 16V C6745 F1G1C104A077 C 0.1UF 16V C6746 F1G1C104A077 C 0.1UF 16V C6747 F1G1C104A077 C 0.1UF 16V C6770 F1G1C104A077 C 0.1UF 16V...
  • Page 59 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C8229 F1G1A105A047 C 1UF 10V C8230 F1G1C104A077 C 0.1UF 16V C8231 F1G1C104A077 C 0.1UF 16V C8232 F1G1C104A077 C 0.1UF 16V C8233 F1G1C104A077 C 0.1UF 16V...
  • Page 60 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C8489 F1G1C104A077 C 0.1UF 16V C8490 F1G1C104A077 C 0.1UF 16V C8491 F1G1C104A077 C 0.1UF 16V C8492 F1G1C104A077 C 0.1UF 16V C8600 F1L3D1020008 C 1000PF 2000V...
  • Page 61 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C9586 F2AZZ560A036 1 PAVCA C9587 F1L2E104A028 C 0.10UF, 250V C9588 F1L2E104A028 C 0.10UF, 250V C9590 F2A2C270A235 160V 1 PAVCA C9591 F2A2C270A235 160V 1 PAVCA...
  • Page 62 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks D9527 B0FCAM000001 DIODE 1 PAVCA D9528 B0BC6R2A0337 DIODE 1 PAVCA D9529 DB2J41100L DIODE D9530 DB2J41100L DIODE D9531 B0BC6R2A0337 DIODE 1 PAVCA D9532 DZ2J039M0L ZENER DIODE...
  • Page 63 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks L2300 J0JHC0000045 CHIP INDUCTOR L3007 G1C100MA0072 INDUCTION COIL L3119 J0JYC0000156 FILTER 1 PAVCA L3120 J0JYC0000156 FILTER 1 PAVCA L4901 G1C100MA0533 INDUCTION COIL 1 PAVCA...
  • Page 64 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks LP10 K1KA03A00632 3P CONNECTOR Q2001 B1ADCF000194 TRANSISTOR Q2006 B1ABCE000015 TRANSISTOR Q2011 B1ABCE000015 TRANSISTOR Q2013 B1ABCE000015 TRANSISTOR Q2014 B1ABCE000015 TRANSISTOR Q2015 B1ADCF000194 TRANSISTOR Q4000 B1ABCE000015...
  • Page 65 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R0953 D0GA272JA023 M 2.7KOHM, J.1/16W R0954 D0GA272JA023 M 2.7KOHM, J.1/16W R0955 D0GA272JA023 M 2.7KOHM, J.1/16W R0956 D0GA332JA023 M 3.3KOHM, J,1/16W R0957 D0GA332JA023 M 3.3KOHM, J,1/16W...
  • Page 66 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R4092 D0GA473JA023 M 47KOHM, J,1/16W R4702 D0GA103JA023 M10KOHM, J.1/16 W R4708 D0GA103JA023 M10KOHM, J.1/16 W R4709 D0GA103JA023 M10KOHM, J.1/16 W R4710 D0GA473JA023 M 47KOHM, J,1/16W...
  • Page 67 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R5152 D0GA222JA023 M 2.2KOHM, J,1/16W R5175 D0GA680JA023 M 68 OHM, J,1/16W R5181 D0GA103JA023 M10KOHM, J.1/16 W R5182 D0GA104JA023 M100KOHM, J.1/16 W R5302 D1BB1962A055 M 19.6KOHM,J.1/10W...
  • Page 68 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R8251 D1BA2700A023 M 270 OHM,F.1/16 W 1 PAVCA R8252 D1BA2700A023 M 270 OHM,F.1/16 W 1 PAVCA R8253 D1BA2700A023 M 270 OHM,F.1/16 W 1 PAVCA...
  • Page 69 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R8630 D0GA680JA023 M 68 OHM, J,1/16W R8631 D0GA680JA023 M 68 OHM, J,1/16W R8634 D0GA472JA023 M 4.7KOHM, J,1/16W R8635 D0GA680JA023 M 68 OHM, J,1/16W R8636...
  • Page 70 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R8863 D0GA473JA023 M 47KOHM, J,1/16W R8864 D0GA473JA023 M 47KOHM, J,1/16W R8865 D0GA473JA023 M 47KOHM, J,1/16W R8866 D0GA473JA023 M 47KOHM, J,1/16W R8867 D0GA473JA023 M 47KOHM, J,1/16W...
  • Page 71 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R9572 D1BD2003A066 M 200KOHM.F.1/8W 1 PAVCA R9573 D1BD2003A066 M 200KOHM.F.1/8W 1 PAVCA R9574 D1BD2003A066 M 200KOHM.F.1/8W 1 PAVCA R9575 D0GD103JA052 M 10KOHM,J,1/8W R9576 D1BA3003A014 M 300KOHM,F.
  • Page 72 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks X8300 H0J245500110 CRYSTAL X8450 H0J120500062 CRYSTAL X8600 H0J250500120 CRYSTAL 1 PAVCA ZA0054 K4AD01D00008 TERMINAL S-33...
  • Page 73 Model No. : TC-L55WT50 Exploded View S-34...
  • Page 74 Model No. : TC-L55WT50 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks 10030-0066000 BATTERY COVER 1 PAVCA EAK1H05A SPEAKER_SQ 2 PAVCA K1HY05YY0025 USB CABLE (A20-WIFI) K2CB2YY00065 AC_CORD 1 PAVCA K2KYYYY00199 AV CABLE 1 PAVCA L0EYAA000012 SPEAKER_THIN_BOX...

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