Panasonic TH-L42E3S Service Manual
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Panasonic TH-L42E3S Service Manual

Chassis: km11
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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
7.4. LCD Support Mold Fixing ------------------------------ 17
7.5. LED Panel Installation ---------------------------------- 18
ORDER NO. MTV1101044CE
TH-L42E3S
KM11
SINGAPORE
© 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-L42E3S

  • Page 1: Table Of Contents

    7.3. LCD Panel Fixing & Handling Method -------------- 16 5.2.1. How to access ----------------------------------------10 7.4. LCD Support Mold Fixing ------------------------------ 17 5.2.2. Display of SOS History -----------------------------10 7.5. LED Panel Installation ---------------------------------- 18 © Panasonic Corporation 2011. Unauthorized copying and distribution is a violation of law.
  • Page 2 TH-L42E3S 7.6. Metal Bracket & Barrier Assembly ------------------- 19 13.1. Exploded View and Mechanical Replacement 7.7. Gasket Installation --------------------------------------- 20 Parts List --------------------------------------------------- 72 7.8. Assembly P Board and A Board Assembly-------- 21 13.2. Electrical Replacement Parts List ------------------- 72 7.9.

  • Page 3: Safety Precautions

    TH-L42E3S 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-L42E3S 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-L42E3S 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-L42E3S 3 Service Navigation 3.1. Service Hint Board Name Main Device Board Name A BOARD AVSW, TUN, OFDM, P-SLD2, EEP Repairable P BOARD Power Supply Repairable KA BOARD Remote, LED, Luminunce Sensor Repairable TC BOARD FHD LVDS signal board Repairable...

  • Page 7: Specifications

    TH-L42E3S 4 Specifications Power Source AC Auto 110 - 240 V, 50 / 60 Hz Power Consumption Power Rating 125 W Standby Condition 0.3 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-L42E3S RCA PIN Type × 2 AV3 Input AUDIO L-R 0.5 V [rms] RCA PIN Type × 1 1.0 V [p-p] (75 Ω) VIDEO RCA PIN Type × 2 Audio Output AUDIO L-R 0.5 V [rms] (high impedance) Others HDMI 1 - 3 Input TYPE A Connectors •...

  • Page 9: Service Mode

    TH-L42E3S 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-L42E3S 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-L42E3S 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-L42E3S 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-L42E3S 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-L42E3S 7 Disassembly and Assembly Instructions 7.1. AC Cord Dressing 1. AC cord is wrapped in the Protection Sheet. 2. It fixes to the Back cover in the re-use band.

  • Page 15: Av Bracket, Control Panel And Speaker Installation

    TH-L42E3S 7.2. AV Bracket, Control Panel and Speaker Installation 1. Install Control Btn Assy. 2. Install side AV bracket. 3. Install Speaker Bracket (4). 4. Fix all parts with screw.

  • Page 16: Lcd Panel Fixing & Handling Method

    TH-L42E3S 7.3. 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 17: Lcd Support Mold Fixing

    TH-L42E3S 7.4. LCD Support Mold Fixing Fix the LCD SUPPORT MOLD to Panel as follow.

  • Page 18: Led Panel Installation

    TH-L42E3S 7.5. LED Panel Installation 1. Insert an A10-K10 lead connector in KA-Print 2. Put KA-Print on LED PANEL. 3. Fix LED PANEL assy with SCREW. 4. Fix LED PANEL on CABINET. 1. A10-K10 wire must allocate behind hooks. 2. A10-K10 wire cannot allocate more than LCD panel area.

  • Page 19: Metal Bracket & Barrier Assembly

    TH-L42E3S 7.6. Metal Bracket & Barrier Assembly 1. Stick gasket at T-con shield case. 2. Stick felt at Bottom Cover. 3. Fix Metal Bracket Vesa, Metal Bracket Bottom with screw. 4. Fix Bottom Cover to Metal Bracket Bottom with screw.

  • Page 20: Gasket Installation

    TH-L42E3S 7.7. Gasket Installation Stick the GASKET to Panel as follow...

  • Page 21: Assembly P Board And A Board Assembly

    TH-L42E3S 7.8. Assembly P Board and A Board Assembly 1. Place P-Board and A board to LCD PANEL. 2. Fix them with screws.

  • Page 22: Disassembly P Board And A Board Assembly

    TH-L42E3S 7.9. Disassembly P Board and A Board Assembly 1. Remove the screws from A-board 6pcs screws. 2. Remove the screws from P-board 6pcs screws.

  • Page 23: Back Cover Installation

    TH-L42E3S 7.10. Back Cover Installation 1. Install Back Cover 2. Fix Back Cover with screw.

  • Page 24: Measurements And Adjustments

    TH-L42E3S 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 25: Block Diagram

    TH-L42E3S 9 Block Diagram 9.1. Main Block Diagram...

  • Page 26: Wiring Connection Diagram

    TH-L42E3S 10 Wiring Connection Diagram 10.1. Wire Dressing 1. Wiring No1~No16. 2. Dressing all wire. 3. Insert AC cord connecter to P board. Clamper Wire No.1 CN1-P4 No.2 P2-A09 No.3 P4-LD4 No.4 P1 (AC CORD) No.5 A12-SP(L) No.6 A12-SP(R) No.7 A02-GK01 No.8 A10-KA10...

  • Page 27: Schematic Diagram

    TH-L42E3S 11 Schematic Diagram 11.1. Schematic Diagram Notes...

  • Page 28: A Board

    TH-L42E3S 11.2. A Board 11.2.1. A Board - Sheet : 002 (1 / 2) <1A> <2A> <3A>...

  • Page 29: A Board - Sheet : 002 (2 / 2)

    TH-L42E3S 11.2.2. A Board - Sheet : 002 (2 / 2) <1A> <2A> <3A>...

  • Page 30: A Board - Sheet : 003 (1 / 5)

    TH-L42E3S 11.2.3. A Board - Sheet : 003 (1 / 5) <1A> <2A> <3A>...

  • Page 31: A Board - Sheet : 003 (2 / 5)

    TH-L42E3S 11.2.4. A Board - Sheet : 003 (2 / 5) <1A> <2A> <1B> <2B> <3A>...

  • Page 32: A Board - Sheet : 003 (3 / 5)

    TH-L42E3S 11.2.5. A Board - Sheet : 003 (3 / 5) <1B> <1C> <2B> <2C>...

  • Page 33: A Board - Sheet : 003 (4 / 5)

    TH-L42E3S 11.2.6. A Board - Sheet : 003 (4 / 5) <1C> <1D> <2C>...

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

    TH-L42E3S 11.2.7. A Board - Sheet : 003 (5 / 5) <1D>...

  • Page 35: A Board - Sheet : 004 (1 / 2)

    TH-L42E3S 11.2.8. A Board - Sheet : 004 (1 / 2) <1A> <2A>...

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

    TH-L42E3S 11.2.9. A Board - Sheet : 004 (2 / 2) <1A> <2A>...

  • Page 37: A Board - Sheet : 005 (1 / 3)

    TH-L42E3S 11.2.10. A Board - Sheet : 005 (1 / 3) <1A>...

  • Page 38: A Board - Sheet : 005 (2 / 3)

    TH-L42E3S 11.2.11. A Board - Sheet : 005 (2 / 3) <1B> <1A> <2B>...

  • Page 39: A Board - Sheet : 005 (3 / 3)

    TH-L42E3S 11.2.12. A Board - Sheet : 005 (3 / 3) <1B> <2B>...

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

    TH-L42E3S 11.2.13. A Board - Sheet : 008 (1 / 1)

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

    TH-L42E3S 11.2.14. A Board - Sheet : 009 (1 / 1)

  • Page 42: A Board - Sheet : 100 (1 / 2)

    TH-L42E3S 11.2.15. A Board - Sheet : 100 (1 / 2) <1A> <2A>...

  • Page 43: A Board - Sheet : 100 (2 / 2)

    TH-L42E3S 11.2.16. A Board - Sheet : 100 (2 / 2) <1A> <2A>...

  • Page 44: A Board - Sheet : 101 (1 / 3)

    TH-L42E3S 11.2.17. A Board - Sheet : 101 (1 / 3) <1A> <2A>...

  • Page 45: A Board - Sheet : 101 (2 / 3)

    TH-L42E3S 11.2.18. A Board - Sheet : 101 (2 / 3) <1B> <1A> <2B> <2A>...

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

    TH-L42E3S 11.2.19. A Board - Sheet : 101 (3 / 3) <1B> <2B>...

  • Page 47: A Board - Sheet : 300 (1 / 1)

    TH-L42E3S 11.2.20. A Board - Sheet : 300 (1 / 1)

  • Page 48: A Board - Sheet : 301 (1 / 3)

    TH-L42E3S 11.2.21. A Board - Sheet : 301 (1 / 3) <1A> <2A>...

  • Page 49: A Board - Sheet : 301 (2 / 3)

    TH-L42E3S 11.2.22. A Board - Sheet : 301 (2 / 3) <1A> <1B> <2A> <2B>...

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

    TH-L42E3S 11.2.23. A Board - Sheet : 301 (3 / 3) <1B> <2B>...

  • Page 51: A Board - Sheet : 302 (1 / 2)

    TH-L42E3S 11.2.24. A Board - Sheet : 302 (1 / 2) <1A> <2A> <3A> <4A>...

  • Page 52: A Board - Sheet : 302 (2 / 2)

    TH-L42E3S 11.2.25. A Board - Sheet : 302 (2 / 2) <1A> <2A> <3A> <4A>...

  • Page 53: A Board - Sheet : 700 (1 / 2)

    TH-L42E3S 11.2.26. A Board - Sheet : 700 (1 / 2) <1A> <2A> <3A>...

  • Page 54: A Board - Sheet : 700 (2 / 2)

    TH-L42E3S 11.2.27. A Board - Sheet : 700 (2 / 2) <1A> <2A> <3A>...

  • Page 55: A Board - Sheet : 701 (1 / 2)

    TH-L42E3S 11.2.28. A Board - Sheet : 701 (1 / 2) <1A> <2A> <3A>...

  • Page 56: A Board - Sheet : 701 (2 / 2)

    TH-L42E3S 11.2.29. A Board - Sheet : 701 (2 / 2) <1A> <2A> <3A>...

  • Page 57: A Board - Sheet : 702 (1 / 2)

    TH-L42E3S 11.2.30. A Board - Sheet : 702 (1 / 2) <1A> <2A>...

  • Page 58: A Board - Sheet : 702 (2 / 2)

    TH-L42E3S 11.2.31. A Board - Sheet : 702 (2 / 2) <1A> <2A>...

  • Page 59: A Board - Sheet : 703 (1 / 1)

    TH-L42E3S 11.2.32. A Board - Sheet : 703 (1 / 1)

  • Page 60: A Board - Sheet : 704 (1 / 1)

    TH-L42E3S 11.2.33. A Board - Sheet : 704 (1 / 1)

  • Page 61: A Board - Sheet : 708 (1 / 1)

    TH-L42E3S 11.2.34. A Board - Sheet : 708 (1 / 1)

  • Page 62: Ka Board

    TH-L42E3S 11.3. KA Board 11.3.1. KA Board (1 / 2) <1A> <2A>...

  • Page 63: Ka Board (2 / 2)

    TH-L42E3S 11.3.2. KA Board (2 / 2) <1A> <2A>...

  • Page 64: P Board

    TH-L42E3S 11.4. P Board 11.4.1. P Board (1 / 3) <1A> <2A> <3A>...

  • Page 65: P Board (2 / 3)

    TH-L42E3S 11.4.2. P Board (2 / 3) <1A> <1B> <2A> <2B> <3A> <3B>...

  • Page 66: P Board (3 / 3)

    TH-L42E3S 11.4.3. P Board (3 / 3) <1B> <2B> <3B>...

  • Page 67: Printed Circuit Board

    TH-L42E3S 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 68 TH-L42E3S 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 69: Ka-Board

    TH-L42E3S 12.2. 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 . RM2800A RM2800...

  • Page 70: P-Board

    TH-L42E3S 12.3. P-BOARD P-BOARD (TOP COMPONENT SIDE) TNPA5364 Parts Location Ref.No Location Ref.No Location IC7301 D7102 D7103 D7203 D7204 D7205 D7302 D7303 D7332 D7333 D7501 D7502...
  • Page 71 TH-L42E3S P-BOARD (BOTTOM COMPONENT SIDE) TNPA5364 Parts Location Ref.No Location Ref.No Location Ref.No Location Ref.No Location D7326 D7341 IC7201 D7101 D7327 D7342 IC7301 D7102 IC7502 D7103 D7328 D7343 D7329 D7402 IC7601 D7201 D7202 D7330 D7403 D7203 D7331 D7404 D7332 D7501...

  • Page 72: Exploded View And Replacement Parts List

    TH-L42E3S 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 73 TH-L42E3S 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 74 TH-L42E3S Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C5623 F1G1C104A077 C 0.1UF , 16V C8037 F1J1A106A087 C 10UF , 10V C5624 F1J1A106A087 C 10UF , 10V C8038 F1G1H1020008 C 1000PF , 50V C5625 F1G1C104A077 C 0.1UF , 16V...
  • Page 75 TH-L42E3S Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C8630 F1G1H220A565 C 22PF , 50V D7332 B0HAGQ000001 DIODE C8644 F1G1C104A077 C 0.1UF , 16V D7333 B0JAME000126 DIODE C8700 F1G1E1030005 C 0.01UF , 25V...
  • Page 76 TH-L42E3S Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks L4800 J0JGC0000020 CHIP BEADS Q8102 B1MBEDA00027 TRANSISTOR L4801 J0JGC0000020 CHIP BEADS RESISTORS L4802 J0JGC0000020 CHIP BEADS R0800 D0GA472JA023 C 4.7KOHM ,J, 1/16W...
  • Page 77 TH-L42E3S Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R2753 D0GDR00J0004 C 0OHM ,J, 1/8W R4048 EXB28VR000X 0OHM , 1/10W R2772 D0GAR00J0005 C 0OHM ,J, 1/16W R4049 EXB28VR000X 0OHM , 1/10W...
  • Page 78 TH-L42E3S Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R5009 D1BA5602A023 C 56KOHM ,J, 1/16W R7389 D0GD162JA052 C 1.6KOHM ,J, 1/8W R5012 D1BA2202A023 C 22KOHM ,J, 1/16W R7392 D0GD392JA052 C 3.9KOHM ,J, 1/8W...
  • Page 79 TH-L42E3S Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R8616 D0GA101JA023 C 100OHM ,J, 1/16W R8925 EXB28V680JX 68OHM ,J, 1/10W R8617 D0GA101JA023 C 100OHM ,J, 1/16W R8965 EXB28V103JX 68OHM ,J, 1/10W...
  • Page 80 TH-L42E3S Safety Ref. Part No. Part Name & Description Remarks ZA069 K4ZZ01000267 SHIELD CHIP ZA7001 K4AD01A00003 TERMINAL ZA7003 K4AD01A00003 TERMINAL ZA8800 K4AD01D00008 TERMINAL ZA8801 K4AD01D00008 TERMINAL ZA8802 K4AD01D00008 TERMINAL ZA8803 K4AD01D00008 TERMINAL...
  • Page 81 Model No. : TH-L42E3S Parts Location...
  • Page 82 Model No. : TH-L42E3S Packing Exploded View 1...
  • Page 83 Model No. : TH-L42E3S Packing Exploded View 2...
  • Page 84 Model No. : TH-L42E3S Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks K2CQ2YY00090 AC CORD L0AA16C00006 SPEAKER L5EDDYY00248 LCD PANEL N2QAYB000604 REMOTE TRANSMITTER TBL5ZX0113 PEDESTAL ASSY TBL5ZX0188 STAND MOUNTING ASSY TBM4GC635 MODEL NAME PLATE THE4GJ001J SCREW...

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