Panasonic TC-L42U30 Service Manual
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Panasonic TC-L42U30 Service Manual

42 inch class 1080p lcd hdtv
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42 inch Class 1080p LCD HDTV
TC-L42U30
Model No.
LA14 Chassis
© Panasonic Corporation 2011.
Unauthorized copying and distribution is a violation
of law.
ORDER NO.MTNC110102CE
B32 Canada: B61

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Summary of Contents for Panasonic TC-L42U30

  • Page 1 ORDER NO.MTNC110102CE B32 Canada: B61 42 inch Class 1080p LCD HDTV TC-L42U30 Model No. LA14 Chassis © Panasonic Corporation 2011. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions -----------------------------------------------3 11.6. A-Board (4/8) Schematic Diagram ------------------ 47 1.1. General Guidelines ----------------------------------------3 11.7. A-Board (5/8) Schematic Diagram ------------------ 48 2 Warning --------------------------------------------------------------4 11.8. A-Board (6/8) Schematic Diagram ------------------ 49 2.1. Prevention of Electrostatic Discharge (ESD) 11.9.

  • 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 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 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 TC-Board Tcon, Double Speed KA-Board Remote Receiver, LED, Cat’s eye P-Board Power Supply Non serviceable P-Board should be exchanged for service. Control Panel Comp Control Panel Non serviceable Control Panel Comp should be exchanged for service. 3.2.

  • Page 7: Specifications

    4 Specifications Power Source AC 110-127 V, 60 Hz Power Consumption Rated Power Consumption 210 W Standby Condition 0.3 W Display panel Aspect Ratio 16:9 Visible screen size 42 inch class (42.0 inches measured diagonally) (W × H × Diagonal) 36.6 inch ×...

  • Page 8: Service Mode

    5 Service Mode 5.1. How to enter into Service Mode 5.1.1. 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. 5.1.2.
  • Page 9 Contents of adjustment mode 5.1.4. • Value is shown as a hexadecimal number. • Preset value differs depending on models. • After entering the adjustment mode, take note of the value in each item before starting adjustment. Main item Sub item Sample Data Remark ADJUST...

  • Page 10: Srv-Tool

    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 11: 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: 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

    5.4. Data Copy by SD Card 5.4.1. 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 5.4.3. 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 5.4.4. 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

    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 16: 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. Blinking Times Contents Check point...

  • Page 17: Disassembly And Assembly Instructions

    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 18: P-Board

    7.4. P-Board 7.5. Side AV bracket 1. Remove the 6 screws. 1. Remove the side AV bracket. 2. Disconnect the connectors (P1, P2, P3 and P4). 3. Remove the P-Board. 7.6. A-Board 1. Remove the 5 screws. 2. Disconnect the connector (A03, A04, A10, A11 and A21). 3.

  • Page 19: Control Panel Comp

    7.7. Control panel comp 7.9. Metal bracket right 1. Disconnect the connector (K1). 1. Remove the 2 screws. 2. Remove the 2 screws. 2. Remove the Metal bracket right. 3. Remove the control panel comp. 7.8. Speaker unit 7.10. VESA metal and Metal vertical 1.

  • Page 20: A-Board Bracket

    7.11. A-Board bracket 7.14. Barrier 1. Remove the 3 screws. 1. Remove the barrier. 2. Remove the A-Board bracket. 7.12. Metal bracket top 1. Remove the 3 screws. 2. Remove the Metal bracket top. 7.15. TC-Board 1. Disconnect the connector (TC01, TC04, TC05 and TC06).

  • Page 21: Lcd Top Mtg And Lcd Side Mtg

    7.16. LCD Top MTG and LCD side 1. Remove the 5 screws. 2. Remove the LCD Top MTG and LCD side MTG. 7.17. LCD Panel 1. Remove the 3 screws (E). 2. Remove the 2 screws (F). 3. Remove the LCD panel. 7.18.

  • Page 22: Emi Processing

    7.19. EMI processing...

  • Page 34: Measurements And Adjustments

    8 Measurements and Adjustments 8.1. VCOM Adjustment (Flicker Adjustment) 8.1.1. General information: When replacing LCD panel, TC board (T-CON) or both, [VCOM] Adjustment have to be done. Data for VCOM Adjustment is different depend on the LCD panel and the data is stored in TC board. Adjustment procedures are as follows.

  • Page 35: Voltage Chart Of A-Board

    8.2. Voltage chart of A-board VOLTAGE TEST POINT SPECIFICATION (Reception state) STB3.3V TP4716 3.3 ± 0.16 V SUB5V TP4723 5 ± 0.25 V PANEL12V TP8307 12 ± 0.6 V 8.3. Picture level adjustment (RF) Instrument Name Remarks 1. REMOTE TRANSMITTER 2.

  • Page 37: Block Diagram

    9 Block Diagram 9.1. Main Block Diagram MAIN FLASH CPU BUS SD CARD DATA SD CARD DATA CPU BUS SD CARD SLOT SUB3.3V IFD_OUT Nile-TCON DDR2 SIF_OUT TUNER EEPROM VIDEO_OUT STB5V STB1.2V STB3.3V SUB1.8V DET (LED:2 TIMES) (LED:2 TIMES) ANALOG-ASIC AV SW SUB1.2V DET (LED:3 TIMES)

  • Page 38: Block (1/3) Diagram

    9.2. Block (1/3) Diagram MAIN CONTROL PANEL COMP OPERATION KEYS MENU INPUT/OK KEY1 KEY1 KEY3 KEY3 POWER BUTTON POWER POWER SUPPLY COLD COLD AC CORD Fuse AC Vin PHOTO FILTER (Live) Detection COUPLER Sub converter T201 TUNER6V FET SW STB5.8V ON/OFF STR-6051M (with current...

  • Page 39: Block (2/3) Diagram

    9.3. Block (2/3) Diagram JK8502 SPEAKER_R SPEAKER_L SD CARD D2142 DIGITAL JK4502 JK4501 JK4500 TU8302 JK2101 JK2108A FACTORY AUDIO OUT HDMI1 HDMI2 HDMI3(SIDE) MAIN TUNER PC IN VIDEO/COMP. IN 24KEC_IIC0 24KEC_IIC1 24KEC_IIC2 MCU_IIC YAMON_TX/RX 24KEC_IIC1 IC2106 AUDIO AMP Q4515 F16V IC5613 SUB5V 3.3V...

  • Page 40: Block (3/3) Diagram

    9.4. Block (3/3) Diagram BACK LIGHT PANEL INVERTER CONTROL CIRCUIT INV_SOS INV_ON INV_PWM PANEL LCD PANEL TCON/DOUBLE SPEED LCD PANEL TC01 FOR RIGHT GMA3,4,6,7, 12,13,15,16 RMLV0N/P-RMLV5N/P IC9206 rDAC LVCC3.3V TC06 14pin Q9001 Q9003 LVCC3.3V Z_IIC H_VDD8V X9201 X9001 H_VDD8V IC9201 IC9006 LVDD16V TCON...

  • Page 41: 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...

  • Page 43: Schematic Diagram

    Model No. : TC-L42U30 Schematic Diagram Note...

  • Page 44: A-Board (1/8) Schematic Diagram

    Model No. : TC-L42U30 Replacement Parts List Note...

  • Page 45: A-Board (2/8) Schematic Diagram

    Model No. : TC-L42U30 A-Board (1/8)

  • Page 46: A-Board (3/8) Schematic Diagram

    Model No. : TC-L42U30 A-Board (2/8)

  • Page 47: A-Board (4/8) Schematic Diagram

    Model No. : TC-L42U30 A-Board (3/8)

  • Page 48: A-Board (5/8) Schematic Diagram

    Model No. : TC-L42U30 A-Board (4/8)

  • Page 49: A-Board (6/8) Schematic Diagram

    Model No. : TC-L42U30 A-Board (5/8)

  • Page 50: A-Board (7/8) Schematic Diagram

    Model No. : TC-L42U30 A-Board (6/8)

  • Page 51: A-Board (8/8) And Ka-Board Schematic Diagram

    Model No. : TC-L42U30 A-Board (7/8)

  • Page 52: Tc-Board (1/3) Schematic Diagram

    Model No. : TC-L42U30 A-Board (8/8) and KA-Board S-10...

  • Page 53: Tc-Board (2/3) Schematic Diagram

    Model No. : TC-L42U30 TC-Board (1/3) S-11...

  • Page 54: Tc-Board (3/3) Schematic Diagram

    Model No. : TC-L42U30 TC-Board (2/3) S-12...

  • Page 55: Printed Circuit Board

    Model No. : TC-L42U30 TC-Board (3/3) S-13...
  • Page 56 Model No. : TC-L42U30 A-Board (Foil Side) S-14...
  • Page 57 Model No. : TC-L42U30 A-Board (Component Side) S-15...

  • Page 58: Tc-Board

    Model No. : TC-L42U30 KA-Board S-16...

  • Page 59: Exploded View

    Model No. : TC-L42U30 TC-Board S-17...
  • Page 60 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks N0AE3GK00002 CIRCUIT BOARD P 1 PAVCA TXN/A1MYUUS CIRCUIT BOARD A 1 (RTL)PAVCA TXNKA1MYUU CIRCUIT BOARD KA 1 (RTL)PAVCA TXNTC1MYUU CIRCUIT BOARD TC 1 (RTL)PAVCA...

  • Page 61: Electrical Replacement Parts List

    Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C2283 F1G1C104A077 C 0.1UF 16V C2296 F1H1A225A051 C 2.2UF, 10V C2297 F1H1A225A051 C 2.2UF, 10V C2303 F1G1C104A077 C 0.1UF 16V C2304 ECJ1VB0J105K C 1UF, 6.3V...
  • Page 62 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C5694 F1G1E1030005 C 0.01UF 25V C5695 F1G1E1030005 C 0.01UF 25V C5696 F1G1E472A059 C 4700pF 25V C5700 F1H0J475A041 C 4.7UF, 16V C5701 F1H0J475A041 C 4.7UF, 16V...
  • Page 63 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C8025 F1G1C5R0A118 C 5.0PF 16V 1 PAVCA C8026 F1G1E1030005 C 0.01UF 25V C8027 F1G1C104A077 C 0.1UF 16V C8028 F1G1C104A077 C 0.1UF 16V C8029 F1G1E153A103 C 0.015UF 25V...
  • Page 64 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C8130 F1G1C104A077 C 0.1UF 16V C8131 F1G1H1020008 C 1000PF 50V C8132 ECJ1VB0J105K C 1UF, 6.3V C8133 F1G1H1020008 C 1000PF 50V C8136 F1G1C104A077 C 0.1UF 16V...
  • Page 65 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C8506 F1G1C104A077 C 0.1UF 16V C8512 F1J1A106A087 C 10UF, 10V C8513 F1G1C104A077 C 0.1UF 16V C8514 F1G1E1030005 C 0.01UF 25V C8515 F1J1A106A087 C 10UF, 10V...
  • Page 66 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C9083 ECJ1VB0J105K C 1UF, 6.3V C9084 F1G1C104A116 C 0.1UF 16V C9085 F1G1C104A116 C 0.1UF 16V C9086 F1G1C104A116 C 0.1UF 16V C9087 F1G1C104A116 C 0.1UF 16V...
  • Page 67 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C9204 F1G1C104A116 C 0.1UF 16V C9205 F1G1C104A116 C 0.1UF 16V C9206 F1G1C104A116 C 0.1UF 16V C9207 F1G1C104A116 C 0.1UF 16V C9208 F1G1C104A116 C 0.1UF 16V...
  • Page 68 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks C9270 F1H1E104A129 C 0.1 uF 25V C9271 F1G1H102A730 C 1000PF 50V C9272 F1K1E106A136 C 10UF, 25V C9273 F1G1H102A730 C 1000PF 50V C9274 F1H1H104A970 C 0.1UF, , 50V...
  • Page 69 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks D2142 K7AAAY000006 PHOTO LINK D2800 B3AAB0000343 D4101 EZJZ0V120JA VARISTOR D4102 EZJZ0V120JA VARISTOR D4504 DZ2J056M0L ZENER DIODE D4505 DZ2J056M0L ZENER DIODE D4509 DZ2J056M0L ZENER DIODE...
  • Page 70 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks IC8002 C3ABSY000068 1 PAVCA IC8004 TVRR986S 1 PAVCA IC8301 C0DBAYY01058 1 PAVCA 1 PAVCA IC8502 TVRR984ACS 1 PAVCA IC8503 TVRR987ABS IC8850 C0DBGYY00930 1 PAVCA...
  • Page 71 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks L8000 J0JHC0000045 CHIP INDUCTOR L8002 J0JHC0000045 CHIP INDUCTOR L8003 J0JHC0000045 CHIP INDUCTOR L8004 J0JHC0000045 CHIP INDUCTOR L8005 J0JHC0000045 CHIP INDUCTOR L8006 J0JHC0000045 CHIP INDUCTOR...
  • Page 72 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks Q4704 DSC2001S0L TRANSISTOR Q4770 B1ADGJ000008 TRANSISTOR 1 PAVCA Q4771 DSC2001S0L TRANSISTOR Q5605 B1ADCE000022 TRANSISTOR Q5612 B1ABCF000231 TRANSISTOR Q5613 B1ABCF000231 TRANSISTOR Q8002 B1ABCF000231 TRANSISTOR Q8003...
  • Page 73 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R2311 D0GA151JA023 M 150 OHM, J,1/16W R2314 D0GA303JA023 M 30K OHM J 0.063W 1 PAVCA R2324 D1BA1501A014 M 1.5KOHM,J.1/16 W R2325 D1BA6801A014 M6.8 KOHM,J.1/16 W...
  • Page 74 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R4526 D0GA472JA023 M 4.7KOHM, J,1/16W R4527 D0GA472JA023 M 4.7KOHM, J,1/16W R4548 D0GA220JA023 M22 OHM, J.1/16 W R4549 D0GA151JA023 M 150 OHM, J,1/16W R4550 D0GA151JA023...
  • Page 75 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R5669 D1BA3901A014 M 3.9KOHM,J.1/16 W 1 PAVCA R5670 D0GA223JA023 M 22K OHM J 1/16W R5671 D0GA683JA023 M 68KOHM, J,1/16W R5672 D0GA103JA015 M 10KOHM,J,1/16W R5673...
  • Page 76 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R8050 D0GA101JA015 M 100 OHM, J,1/16W R8051 D0GA101JA015 M 100 OHM, J,1/16W R8053 D0GA102JA023 M1KOHM, J.1/16 W R8054 D0GA122JA023 M 1.2KOHM, J,1/16W R8055 D0GA222JA023 M 2.2KOHM, J,1/16W...
  • Page 77 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R8512 EXB2HV680J M 68 OHM 1/16 W R8513 EXB2HV680J M 68 OHM 1/16 W R8514 EXB2HV680J M 68 OHM 1/16 W R8515 EXB2HV680J M 68 OHM 1/16 W...
  • Page 78 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R9096 ERJ2GEJ103 M 10KOHM, J,1/16 W R9097 D0GA680JA015 M 68 OHM, J,1/16W R9098 D0GA680JA015 M 68 OHM, J,1/16W R9099 D0GA680JA015 M 68 OHM, J,1/16W...
  • Page 79 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R9237 D1BA1001A014 M 1KOHM,J. 1/16 W R9238 D0GAR00Z0001 M 0 OHM, 1/16W R9239 D0GAR00Z0001 M 0 OHM, 1/16W R9240 D1BA10R0A014 M 10 OHM,J. 1/16 W...
  • Page 80 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks R9322 ERJ8ENF9101V M 9100 OHM, 0.25W 1 PAVCA R9324 D1BA1001A014 M 1KOHM,J. 1/16 W R9327 D0GAR00Z0001 M 0 OHM, 1/16W R9328 D0GAR00Z0001 M 0 OHM, 1/16W...
  • Page 81 Model No. : TC-L42U30 Exploded View S-39...
  • Page 82 Model No. : TC-L42U30 Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks 10030-0061100 BATTERY COVER 1 PAVCA K0RB00700018 CONTROL PANEL COMP 1 CIRCUIT BOARD&PANEL PAVCA K1PY51Y00054 LVDS FFC (A21-TC05) 1 PAVCA K2CB2YY00031 AC CORD (42) 1 PAVCA...

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