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Panasonic TH-L42U30R Service Manual
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Panasonic TH-L42U30R Service Manual

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TABLE OF CONTENTS

1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.1.1. Leakage Current Cold Check---------------------- 3
1.) --------------------------------------------------------- 3
2 Warning -------------------------------------------------------------- 4
2.2. About lead free solder (PbF)---------------------------- 5
3 Service Navigation ----------------------------------------------- 6
3.1. Service Hint ------------------------------------------------- 6
4 Specifications ----------------------------------------------------- 7
5 Service Mode ------------------------------------------------------ 9
5.1. How to enter into Service Mode ----------------------- 9
5.1.1. Contents of adjustment mode --------------------- 9
5.1.2. How to exit---------------------------------------------- 9
5.2. SRV-TOOL -------------------------------------------------10
5.2.1. How to access ----------------------------------------10
5.2.2. Display of SOS History -----------------------------10
Model No.
Chassis:
Destination:
PAGE
5.2.3. POWER ON TIME/COUNT ----------------------- 10
5.2.4. Exit ------------------------------------------------------ 10
5.2.5. Self Check Mode ------------------------------------ 11
5.2.6. Hotel Mode Adjustment ---------------------------- 11
5.2.7. Hotel Mode-------------------------------------------- 11
6 Troubleshooting Guide --------------------------------------- 12
6.1. Check of the IIC bus lines------------------------------ 12
6.1.1. How to access --------------------------------------- 12
6.1.2. Exit ------------------------------------------------------ 12
6.1.3. Screen display --------------------------------------- 12
6.2. Power LED Blinking timing chart --------------------- 13
6.3. No Power--------------------------------------------------- 13
7.1. AC Cord Dressing---------------------------------------- 14
Installation ------------------------------------------------- 15
ORDER NO. MTV1101102CE
TH-L42U30R
KM11
IRAN
© Panasonic Corporation 2011. Unauthorized
copying and distribution is a violation of law.
LCD TV
PAGE
&

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Summary of Contents for Panasonic TH-L42U30R

  • Page 1: Table Of Contents

    5.2.1. How to access ----------------------------------------10 7.4. LCD Panel Fixing & Handling Method -------------- 17 5.2.2. Display of SOS History -----------------------------10 7.5. LCD Bracket Install & Side AV Bracket Install ---- 18 © Panasonic Corporation 2011. Unauthorized copying and distribution is a violation of law.
  • Page 2 TH-L42U30R 7.6. LED Panel Installation ---------------------------------- 19 12.2. GK-BOARD ----------------------------------------------- 71 7.7. Metal Bracket & PCB Fixing --------------------------- 20 12.3. KA-BOARD------------------------------------------------ 72 7.8. Metal Bracket and Wire Install ------------------------ 21 12.4. P-BOARD-------------------------------------------------- 73 7.9. Disassembly P board and A Board Assembly ---- 22 13 Exploded View and Replacement Parts List----------- 75 7.10.

  • Page 3: Safety Precautions

    TH-L42U30R 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

    TH-L42U30R 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)

    TH-L42U30R 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).

  • Page 6: Service Navigation

    TH-L42U30R 3 Service Navigation 3.1. Service Hint Board Name Main Device Remarks A BOARD AVSW, TUN, OFDM, P-SLD2, EEP Repairable P BOARD Power Supply Repairable KA BOARD Remote, LED, Luminunce Sensor Repairable GK BOARD Power Switch, Keyscan Repairable...

  • Page 7: Specifications

    TH-L42U30R 4 Specifications Power Source AC 220 - 240 V, 50 / 60 Hz Power Consumption Power Rating 184 W Standby Condition 0.25 W Display panel Aspect Ratio 16:9 Visible screen size 106 cm (diagonal) 930 mm (W) × 523 mm (H) 2,073,600 (1,920 (W) ×...
  • Page 8 TH-L42U30R RCA PIN Type × 2 Audio Output AUDIO L-R 0.5 V [rms] (high impedance) Others HDMI 1 - 3 Input TYPE A Connectors • This TV supports ‘HDAVI Control 5’ function. R / G / B: 0.7 V[p-p] (75 Ω)

  • Page 9: Service Mode

    TH-L42U30R 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. Contents of adjustment mode 5.1.1. • Value is shown as a hexadecimal number.

  • Page 10: Srv-Tool

    TH-L42U30R 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.

  • Page 11: Self Check Mode

    TH-L42U30R 5.2.5. Self Check Mode 1. Press the ‘MENU’ button (on the remote control) and the ‘VOL DOWN’ button on the LCD panel. 2. Press ON/OFF button on the panel to Exit. 5.2.6. Hotel Mode Adjustment 1. Press the ‘VOLUME DOWN’ button on the TV panel and simultaneously press the AV button on the remote control 3 times to enter Hotel Mode.

  • Page 12: Troubleshooting Guide

    TH-L42U30R 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 13: Power Led Blinking Timing Chart

    TH-L42U30R 6.2. Power LED Blinking timing chart 1. Subject Information of LED Flashing timing chart. 2. Contents When an abnormality occurs, the protection circuit will operate and reset the unit to stand by mode. During this time, the defective block can be identified by the number of blinking times of the Power LED on the front panel of the unit as follow:...

  • Page 14: Disassembly And Assembly Instructions

    TH-L42U30R 7 Disassembly and Assembly Instructions 7.1. AC Cord Dressing...

  • Page 15: Control Panel Assembly & Clamper Installation

    TH-L42U30R 7.2. Control Panel Assembly & Clamper Installation 1. Put control panel Assy on the cabinet. 2. Fix the control panel with screws. Fix clamper at bottom mtg...

  • Page 16: Speaker Preparation & Installation

    TH-L42U30R 7.3. Speaker Preparation & Installation 1. SP bracket put on cabinet. 2. Fix them with screws. 3. Insert the SP rubber bush into the SP unit. 4. Insert the SP unit to the SP bracket.

  • Page 17: Lcd Panel Fixing & Handling Method

    TH-L42U30R 7.4. LCD Panel Fixing & Handling Method 1. Place down the cabinet as shown below. 2. Fix LCD panel into the cabinet by taking below precautions. Other general precautions 1. Do not press panel surface to avoid blue spot on the panel display.

  • Page 18: Lcd Bracket Install & Side Av Bracket Install

    TH-L42U30R 7.5. LCD Bracket Install & Side AV Bracket Install 1. Fix Vesa Metal (BC) and fix screw. 2. Fix screw at P-Board and A-Board. 3. Stick Side AV indi. Sheet at Side AV bracket. 4. Slot Side AV to A-Board.

  • Page 19: Led Panel Installation

    TH-L42U30R 7.6. LED Panel Installation 1. Fix LED Panel on CABINET. 2. Wire connecting. (V10) 3. Put V-PCB on CABINET. 4. Fix them with SCREW. 5. Stick felt at A10~V10 wire.

  • Page 20: Metal Bracket & Pcb Fixing

    TH-L42U30R 7.7. Metal Bracket & PCB Fixing 1. Fix A-Board to Chassis Frame Bracket. 2. Insert wire at A-Board and dressing wire. 1. Fix Metal Bracket Vertical (R). 2. Fix P-Board and insert wire at P-Board and A-Board. 3. Fix Metal Bracket Vertical (L).

  • Page 21: Metal Bracket And Wire Install

    TH-L42U30R 7.8. Metal Bracket and Wire Install 1. Insert CN1~P4 wire to inveter. 2. Insert CN201~P3 wire to inveter. 3. Fix LVDS cable to inveter (Remove dust of terminal of LVDS and PB connector. (by ion blow) 4. Fix Metal Bracket Top, Metal Bracket Bottom and fix screw.

  • Page 22: Disassembly P Board And A Board Assembly

    TH-L42U30R 7.9. Disassembly P board and A Board Assembly 1. Open A-board 5pcs screws. 2. Open P-board 6pcs screws.

  • Page 23: Back Cover Assembly

    TH-L42U30R 7.10. Back Cover Assembly 1. Fix the BACK COVER with SCREWS 14pcs and 1pcs at AV side. 2. Insert COVER (Adj.window)

  • Page 24: Disassembly Back Cover Assembly

    TH-L42U30R 7.11. Disassembly Back Cover Assembly 1. Open the BACK COVER with 14pcs and 1pcs screw at AV Side. 2. Open the COVER (Adj. window).

  • Page 25: Measurements And Adjustments

    TH-L42U30R 8 Measurements and Adjustments 8.1. Voltage chart of A-board Set A-Board to a dummy set and check the satisfaction with the specified voltage as following table. VOLTAGE TEST POINT SPECIFICATION SUB1.8V TP8700 1.74 - 1.90 V SUB1.2V TP8100 1.18 - 1.32 V SUB3.3V...

  • Page 26: Block Diagram

    TH-L42U30R 9 Block Diagram 9.1. Main Block Diagram...

  • Page 27: Wiring Connection Diagram

    TH-L42U30R 10 Wiring Connection Diagram 10.1. Wire Dressing 1. Stick felt at LVDS wire and wire. 2. Wiring No.1 ~ No.4. Clamper Wire No.1 A10 - V10 No.2 A02 - K01 No.3 A12 - SP (R) No.4 A12 - SP (L)

  • Page 28: Schematic Diagram

    TH-L42U30R 11 Schematic Diagram 11.1. Schematic Diagram Notes...

  • Page 29: A Board

    TH-L42U30R 11.2. A Board 11.2.1. A Board - Sheet : 002 (1 / 2) <1A> <2A> <3A>...

  • Page 30: A Board - Sheet : 002 (1 / 2)

    TH-L42U30R 11.2.2. A Board - Sheet : 002 (2 / 2) <1A> <2A> <3A>...

  • Page 31: A Board - Sheet : 003 (1 / 5)

    TH-L42U30R 11.2.3. A Board - Sheet : 003 (1 / 5) <1A> <2A> <3A>...

  • Page 32: A Board - Sheet : 003 (2 / 5)

    TH-L42U30R 11.2.4. A Board - Sheet : 003 (2 / 5) <1A> <2A> <1B> <2B> <3A>...

  • Page 33: A Board - Sheet : 003 (3 / 5)

    TH-L42U30R 11.2.5. A Board - Sheet : 003 (3 / 5) <1B> <1C> <2B> <2C> <3C>...

  • Page 34: A Board - Sheet : 003 (4 / 5)

    TH-L42U30R 11.2.6. A Board - Sheet : 003 (4 / 5) <1C> <1D> <2C> <3C>...

  • Page 35: A Board - Sheet : 003 (5 / 5)

    TH-L42U30R 11.2.7. A Board - Sheet : 003 (5 / 5) <1D>...

  • Page 36: A Board - Sheet : 004 (1 / 2)

    TH-L42U30R 11.2.8. A Board - Sheet : 004 (1 / 2) <1A> <2A>...

  • Page 37: A Board - Sheet : 004 (2 / 2)

    TH-L42U30R 11.2.9. A Board - Sheet : 004 (2 / 2) <1A> <2A>...

  • Page 38: A Board - Sheet : 005 (1 / 2)

    TH-L42U30R 11.2.10. A Board - Sheet : 005 (1 / 2) <1A>...

  • Page 39: A Board - Sheet : 005 (2 / 2)

    TH-L42U30R 11.2.11. A Board - Sheet : 005 (2 / 2) <1A>...

  • Page 40: A Board - Sheet : 008 (1 / 1)

    TH-L42U30R 11.2.12. A Board - Sheet : 008 (1 / 1)

  • Page 41: A Board - Sheet : 009 (1 / 1)

    TH-L42U30R 11.2.13. A Board - Sheet : 009 (1 / 1)

  • Page 42: A Board - Sheet : 010 (1 / 1)

    TH-L42U30R 11.2.14. A Board - Sheet : 010 (1 / 1)

  • Page 43: A Board - Sheet : 100 (1 / 3)

    TH-L42U30R 11.2.15. A Board - Sheet : 100 (1 / 3) <1A> <2A> <3A>...

  • Page 44: A Board - Sheet : 100 (2 / 3)

    TH-L42U30R 11.2.16. A Board - Sheet : 100 (2 / 3) <1A> <1B> <2A> <2B> <3A>...

  • Page 45: A Board - Sheet : 100 (3 / 3)

    TH-L42U30R 11.2.17. A Board - Sheet : 100 (3 / 3) <1B> <2B>...

  • Page 46: A Board - Sheet : 101 (1 / 3)

    TH-L42U30R 11.2.18. A Board - Sheet : 101 (1 / 3) <1A> <2A>...

  • Page 47: A Board - Sheet : 101 (2 / 3)

    TH-L42U30R 11.2.19. A Board - Sheet : 101 (2 / 3) <1B> <1A> <2A> <2B>...

  • Page 48: A Board - Sheet : 101 (3 / 3)

    TH-L42U30R 11.2.20. A Board - Sheet : 101 (3 / 3) <1B> <2B>...

  • Page 49: A Board - Sheet : 300 (1 / 1)

    TH-L42U30R 11.2.21. A Board - Sheet : 300 (1 / 1)

  • Page 50: A Board - Sheet : 301 (1 / 3)

    TH-L42U30R 11.2.22. A Board - Sheet : 301 (1 / 3) <1A> <2A>...

  • Page 51: A Board - Sheet : 301 (2 / 3)

    TH-L42U30R 11.2.23. A Board - Sheet : 301 (2 / 3) <1A> <1B> <2A> <2B>...

  • Page 52: A Board - Sheet : 301 (3 / 3)

    TH-L42U30R 11.2.24. A Board - Sheet : 301 (3 / 3) <1B> <2B>...

  • Page 53: A Board - Sheet : 302 (1 / 2)

    TH-L42U30R 11.2.25. A Board - Sheet : 302 (1 / 2) <1A> <2A> <3A>...

  • Page 54: A Board - Sheet : 302 (2 / 2)

    TH-L42U30R 11.2.26. A Board - Sheet : 302 (2 / 2) <1A> <2A> <3A>...

  • Page 55: A Board - Sheet : 700 (1 / 2)

    TH-L42U30R 11.2.27. A Board - Sheet : 700 (1 / 2) <1A> <2A> <3A>...

  • Page 56: A Board - Sheet : 700 (2 / 2)

    TH-L42U30R 11.2.28. A Board - Sheet : 700 (2 / 2) <1A> <2A> <3A>...

  • Page 57: A Board - Sheet : 701 (1 / 2)

    TH-L42U30R 11.2.29. A Board - Sheet : 701 (1 / 2) <1A> <2A> <3A> <4A>...

  • Page 58: A Board - Sheet : 701 (2 / 2)

    TH-L42U30R 11.2.30. A Board - Sheet : 701 (2 / 2) <1A> <2A> <3A> <4A>...

  • Page 59: A Board - Sheet : 702 (1 / 2)

    TH-L42U30R 11.2.31. A Board - Sheet : 702 (1 / 2) <1A> <2A> <3A> <4A>...

  • Page 60: A Board - Sheet : 702 (2 / 2)

    TH-L42U30R 11.2.32. A Board - Sheet : 702 (2 / 2) <1A> <2A> <3A> <4A>...

  • Page 61: A Board - Sheet : 703 (1 / 1)

    TH-L42U30R 11.2.33. A Board - Sheet : 703 (1 / 1)

  • Page 62: A Board - Sheet : 704 (1 / 1)

    TH-L42U30R 11.2.34. A Board - Sheet : 704 (1 / 1)

  • Page 63: Gk Board

    TH-L42U30R 11.3. GK Board 11.3.1. GK Board (1 / 1)

  • Page 64: Ka Board

    TH-L42U30R 11.4. KA BOARD 11.4.1. KA Board (1 / 2) <1A> <2A>...

  • Page 65: Ka Board (2 / 2)

    TH-L42U30R 11.4.2. KA Board (2 / 2) <1A> <2A>...

  • Page 66: P Board

    TH-L42U30R 11.5. P BOARD 11.5.1. P Board (1 / 3) <1A> <2A> <3A>...

  • Page 67: P Board (2 / 3)

    TH-L42U30R 11.5.2. P Board (2 / 3) <1A> <1B> <2A> <2B> <3A> <3B>...

  • Page 68: P Board (3 / 3)

    TH-L42U30R 11.5.3. P Board (3 / 3) <1B> <2B> <3B>...

  • Page 69: Printed Circuit Board

    TH-L42U30R 12 Printed Circuit Board 12.1. A-BOARD A-BOARD (TOP COMPONENT SIDE) TNP4G490 R 4 1 3 8 J S 0 0 3 0 J S 0 0 2 9 J S 0 0 0 7 J S 0 0 0 6...
  • Page 70 TH-L42U30R A-BOARD (BOTTOM COMPONENT SIDE) TNP4G490 R 2 0 1 6 Q 2 0 0 2 C 4 9 3 3 R 4 9 1 8 Q 4 1 2 0 Q 4 1 2 1 C 4 9 0 6...

  • Page 71: Gk-Board

    TH-L42U30R 12.2. GK-BOARD GK-BOARD (TOP COMPONENT SIDE) TNP4G502 C L 2 6 0 0 C L 2 6 0 1 C 2 6 0 1 C 2 6 0 0 D 2 6 0 0 C L 2 6 0 2...

  • Page 72: Ka-Board

    TH-L42U30R 12.3. KA-BOARD KA-BOARD (TOP COMPONENT SIDE) TNPA5378 R M 2 8 0 0 A A A C KA10 A B A D C2801 R2825 R2827 R2826 R2828 C2802 R2817 R2800 S U F F I X . RM2800 RM2800A...

  • Page 73: P-Board

    TH-L42U30R 12.4. P-BOARD P-BOARD (TOP COMPONENT SIDE) TNP4G498 Parts Location Ref.No Location Ref.No Location IC803 D800 D801 D807 D808 D809 D813 D814 D823 D824 D836 D837 D838 D839...
  • Page 74 TH-L42U30R P-BOARD (BOTTOM COMPONENT SIDE) TNP4G498 Parts Location Ref.No Location Ref.No Location Ref.No Location Ref.No Location IC800 D800 D820 D835 IC801 D802 D821 D836 IC802 D805 D822 D837 IC803 D806 D823 D838 D807 D824 D839 D809 D825 D840 D811 D826...

  • Page 75: Exploded View And Replacement Parts List

    TH-L42U30R 13 Exploded View and Replacement Parts List 13.1. Exploded View and Mechanical Replacement Parts List Please click the radio button for ‘Diagrams ll/Parts List’ on the menu bar. 13.2. Electrical Replacement Parts List 13.2.1. Replacement Parts List Notes...

  • Page 76: Electrical Replacement Parts List

    TH-L42U30R 13.2.2. Electrical Replacement Parts List Note: All part will be supplied by PAVCKM. Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C4548 F1G1A105A047 C 1UF , 10V C4800 F1G1H220A565 C 22PF , 50V...
  • Page 77 TH-L42U30R Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C5623 F1G1C104A077 C 0.1UF , 16V C8208 F1G1C104A077 C 0.1UF , 16V C5624 F1J1A106A087 C 10UF , 10V C821 F1J1H474A757 C 0.47UF , 50V C5625 F1G1C104A077 C 0.1UF , 16V...
  • Page 78 TH-L42U30R Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C8703 F1K0J226A049 C 22UF , 6.3V D812 DA2J10100L DIODE C8705 F1G1E1030005 C 0.01UF , 25V D813 B0HAGQ000001 DIODE C8707 F1G1E1030005 C 0.01UF , 25V...
  • Page 79 TH-L42U30R Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks L4700 J0JYC0000311 BEAD CORE RESISTORS L4701 J0JYC0000311 BEAD CORE R0800 D0GA472JA023 C 4.7KOHM ,J, 1/16W L4703 J0JYC0000311 BEAD CORE R0900 D0GA272JA023 C 2.7KOHM ,J, 1/16W...
  • Page 80 TH-L42U30R Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R2603 D1BD6651A044 C 6.65KOHM , 1/8W R4029 EXB28VR000X 0OHM , 1/10W R2604 D1BD1432A044 C 14.3KOHM , 1/8W R4034 EXB28VR000X 0OHM , 1/10W...
  • Page 81 TH-L42U30R Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R5003 D0GA103JA023 C 10KOHM ,J, 1/16W R829 D0B1106JA033 10MOHM ,J, 1/16W R5006 D0GA563JA023 56KOHM ,J, 1/16W R830 D0GD301JA052 C 300OHM ,J, 1/16W...
  • Page 82 TH-L42U30R Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R8703 D1BB4301A055 C 4.3KOHM , 1/16W R925 ERJ8ENF2204 C 2.2MOHM ,J, 1/16W R8704 D1BB2002A055 C 20KOHM , 1/16W R926 ERJ8ENF2204 C 2.2MOHM , 1/16W...
  • Page 83 TH-L42U30R Safety Ref. Part No. Part Name & Description Remarks ZA058 K4ZZ01000267 SHIELD CHIP ZA059 K4ZZ01000267 SHIELD CHIP ZA060 K4ZZ01000267 SHIELD CHIP ZA065 K4ZZ01000267 SHIELD CHIP ZA066 K4ZZ01000267 SHIELD CHIP ZA067 K4ZZ01000267 SHIELD CHIP ZA068 K4ZZ01000267 SHIELD CHIP ZA069 K4ZZ01000267 SHIELD CHIP...
  • Page 84 Model No. : TH-L42U30R Parts Location...
  • Page 85 Model No. : TH-L42U30R Packing Exploded View...
  • Page 86 Model No. : TH-L42U30R Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks K1PY51Y00048 LVDS CABLE K2CQ2YY00062 AC CORD L0AA14B00008 SPEAKER L5EDDAT00008 LCD PANEL N2QAYB000604 REMOTE TRANSMITTER TBL5ZX0113 PEDESTAL ASSY TBL5ZX0115 STAND MOUNTING TBM4GC691 MODEL NAME PLATE...

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