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Panasonic TH-L42ET5R Service Manual
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Panasonic TH-L42ET5R Service Manual

Panasonic TH-L42ET5R 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
5.2.3. POWER ON TIME/COUNT -----------------------10
Model No.
Chassis:
Destination:
PAGE
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. Control Button Fixing------------------------------------ 14
7.2. SP Bracket & Metal Bottom --------------------------- 16
7.3. LVDS & Metal Part Assembly ------------------------- 17
7.6. Screw Fixing----------------------------------------------- 20
7.7. Bracket Assembly 1 ------------------------------------- 21
7.8. Bracket Assembly 2 ------------------------------------- 22
ORDER NO. MTV1204035CE
TH-L42ET5R
LA35
IRAN
© Panasonic Corporation 2012. Unauthorized
copying and distribution is a violation of law.
LED TV
PAGE

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Summary of Contents for Panasonic TH-L42ET5R

  • Page 1: Table Of Contents

    7.6. Screw Fixing----------------------------------------------- 20 5.2.2. Display of SOS History -----------------------------10 7.7. Bracket Assembly 1 ------------------------------------- 21 5.2.3. POWER ON TIME/COUNT -----------------------10 7.8. Bracket Assembly 2 ------------------------------------- 22 © Panasonic Corporation 2012. Unauthorized copying and distribution is a violation of law.
  • Page 2 TH-L42ET5R 7.9. Fixing Gasket---------------------------------------------- 24 7.10. LVDS FFC / BTM Cover Fixing 1--------------------- 25 7.11. LVDS FFC / BTM Cover Fixing 2--------------------- 27 7.12. LVDS FFC / BTM Cover Fixing 3--------------------- 28 7.13. LVDS FFC / BTM Cover Fixing 4--------------------- 29 7.14.

  • Page 3: Safety Precautions

    TH-L42ET5R 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-L42ET5R 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-L42ET5R 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-L42ET5R 3 Service Navigation 3.1. Service Hint Board Name Main Device Remarks A BOARD TUN, OFDM, ADV, LD4, STBY EEP Repairable P BOARD Power Supply Repairable K BOARD LED/RM/CATS Repairable GK BOARD Function SW for LGD panel Repairable...

  • Page 7: Specifications

    TH-L42ET5R 4 Specifications Power Source AC 220-240 V, 50 / 60 Hz Power Consumption Power Rating 110 W Standby Condition 0.2 W Display panel Panel system IPS LED backlight Liquid Crystal Display Visible screen size (diagonal) 107 cm 2,073,600 (1,920 (W)  1,080 (H)) Number of pixels Dimensions (W ...
  • Page 8 TH-L42ET5R Connection Terminals RCA PIN Type  2 AV1 IN AUDIO L-R 0.5 V[rms] RCA PIN Type  1 1.0 V[p-p] (75 ) VIDEO RCA PIN Type  2 AUDIO OUT AUDIO L-R 0.5 V[rms] (high impedance) RCA PIN Type  2...

  • Page 9: Service Mode

    TH-L42ET5R 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-L42ET5R 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-L42ET5R 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 INPUT button on the remote control 3 times to enter Hotel Mode.

  • Page 12: Troubleshooting Guide

    TH-L42ET5R 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-L42ET5R 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-L42ET5R 7 Disassembly and Assembly Instructions 7.1. Control Button Fixing Fixing all screw at panel, bracket and metal part.
  • Page 15 TH-L42ET5R...

  • Page 16: Sp Bracket & Metal Bottom

    TH-L42ET5R 7.2. SP Bracket & Metal Bottom 1. Put the speaker bracket by inserting pins into the holes of the panel. 2. Insert the speakers on the speaker brackets.

  • Page 17: Lvds & Metal Part Assembly

    TH-L42ET5R 7.3. LVDS & Metal Part Assembly...

  • Page 18: Lcd Panel Fixing & Handling Method

    TH-L42ET5R 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 19: Led Panel And Bracket Assembly

    TH-L42ET5R 7.5. LED Panel and Bracket Assembly 1. Fixing LED panel to panel lens. 2. Fixing wire KA10 to KA print and fix to LED panel. 3. Fixing LED panel to cabinet and fix with cabinet rib. 4. Fixing LED/LCD panel to cabinet.

  • Page 20: Screw Fixing

    TH-L42ET5R 7.6. Screw Fixing 1. Do wire dressing follow below spec: 2. Cover panel label with pet tape. 001 THEJ036J SCREW(BTM4/VESA2/A10/P5) 002 XTV3+10JFJ SCREW(KEY2/SP BKT4) 003 THEJ024 SCREW(BTM METAL2) 004 TMME268 CLAMPER(BTM METAL2)

  • Page 21: Bracket Assembly

    TH-L42ET5R 7.7. Bracket Assembly 1...

  • Page 22: Bracket Assembly

    TH-L42ET5R 7.8. Bracket Assembly 2...
  • Page 23 TH-L42ET5R...

  • Page 24: Fixing Gasket

    TH-L42ET5R 7.9. Fixing Gasket...

  • Page 25: Lvds Ffc / Btm Cover Fixing

    TH-L42ET5R 7.10. LVDS FFC / BTM Cover Fixing 1 Fixing LVDS wire.
  • Page 26 TH-L42ET5R...

  • Page 27: Lvds Ffc / Btm Cover Fixing

    TH-L42ET5R 7.11. LVDS FFC / BTM Cover Fixing 2 Fixing felt at LVDS wire.

  • Page 28: Lvds Ffc / Btm Cover Fixing

    TH-L42ET5R 7.12. LVDS FFC / BTM Cover Fixing 3 Fixing LVDS wire.

  • Page 29: Lvds Ffc / Btm Cover Fixing

    TH-L42ET5R 7.13. LVDS FFC / BTM Cover Fixing 4 Fixing SPEAKER, SPENCER & BOTTOM COVER.

  • Page 30: Back Cover Assembly

    TH-L42ET5R 7.14. Back Cover Assembly...
  • Page 31 TH-L42ET5R Part Num Description 003 THTD030J SCREW(BC17/BTM_COVER2/B-CAS1) 20PCS 004 THEC1509 SCREW(BC12) 15PCS 005 TKKL5521 M6_CAP 4PCS...

  • Page 32: Measurements And Adjustments

    TH-L42ET5R 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 PANEL12V TP4004/TP4005 11.45V - 12.55V USB_5V TP5440 4.80V - 5.25V...

  • Page 33: Block Diagram

    TH-L42ET5R 9 Block Diagram 9.1. Main Block Diagram MAIN NAND NAND FLASH SD CARD DATA SD IF IFD_OUT SD CARD SLOT TUNER SIF_OUT SD3.3V DDR3 SUB5V Peaks PEAKS_EEPROM SUB1.1V V/COMP SUB1.5V OVP DET SUB3.3V SUB_AI_3.3V USB5V A-OUT A_OUT SUB9V P15V STB1.1V...

  • Page 34: Detailed Block Diagram (1/2)

    TH-L42ET5R 9.2. Detailed Block Diagram (1/2) JK3008 JK3001 JK3005 JK3051 PC IN MAIN HEADPHONES AUDIO OUT POWER IC7301, IC7502 STB6V IC7201, Q7301, 5.8VS T7202, Q7302 T7301 D7407 PA7406 D7106 Q7201 5.8VS RECTIFIER P15V CONVERTER Q7403 D7408,9 PA7402 +16V CF7101,2 +16V...

  • Page 35: Detailed Block Diagram (2/2)

    TH-L42ET5R 9.3. Detailed Block Diagram (2/2) CN8660 SPEAKER_R SPEAKER_L SD CARD D3006 JK8450 JK8451 JK8452 JK8600 JK4701 JK4700/A JK4702 JK4703/A FACTORY DIGITAL ANTENNA/ MAIN USB1 USB2 USB3 WiFi ETHERNET AUDIO OUT CABLE IN HDMI2 HDMI1 HDMI3 HDMI4 CN0100 DMC_IIC0 IIC0...

  • Page 36: Wiring Connection Diagram

    TH-L42ET5R 10 Wiring Connection Diagram 10.1. Wire Dressing Do wire dressing follow below spec: Clampers / Tapes Cables P4-LD/GK4 P2 - A02 SP (R) - A12 SP (L) - A12 A10 - K10...

  • Page 37: Schematic Diagram

    TH-L42ET5R 11 Schematic Diagram Model No. : TH-L42ET5R A-Board (1/14)
  • Page 38 Model No. : TH-L42ET5R A-Board (2/14)
  • Page 39 Model No. : TH-L42ET5R A-Board (3/14)
  • Page 40 Model No. : TH-L42ET5R A-Board (4/14)
  • Page 41 Model No. : TH-L42ET5R A-Board (5/14)
  • Page 42 Model No. : TH-L42ET5R A-Board (6/14)
  • Page 43 Model No. : TH-L42ET5R A-Board (7/14)
  • Page 44 Model No. : TH-L42ET5R A-Board (8/14)
  • Page 45 Model No. : TH-L42ET5R A-Board (9/14)
  • Page 46 Model No. : TH-L42ET5R A-Board (10/14)
  • Page 47 Model No. : TH-L42ET5R A-Board (11/14)
  • Page 48 Model No. : TH-L42ET5R A-Board (12/14)
  • Page 49 Model No. : TH-L42ET5R A-Board (13/14)
  • Page 50 Model No. : TH-L42ET5R A-Board (14/14)
  • Page 51 Model No. : TH-L42ET5R GK-Board...
  • Page 52 Model No. : TH-L42ET5R K-Board...
  • Page 53 Model No. : TH-L42ET5R P-Board (1/2)
  • Page 54 Model No. : TH-L42ET5R P-Board (2/2)

  • Page 55: Printed Circuit Board

    TH-L42ET5R 12 Printed Circuit Board Model No. : TH-L42ET5R A Board (Top Component Side)
  • Page 56 Model No. : TH-L42ET5R A Board (Bottom Component Side)
  • Page 57 Model No. : TH-L42ET5R GK-Board...
  • Page 58 Model No. : TH-L42ET5R K-Board...
  • Page 59 Model No. : TH-L42ET5R P-Board (Top Component Side)
  • Page 60 Model No. : TH-L42ET5R P-Board (Bottom Component Side)

  • Page 61: Exploded View And Replacement Parts List

    TH-L42ET5R 13 Exploded View and Replacement Parts List Model No. : TH-L42ET5R Parts Location...
  • Page 62 Model No. : TH-L42ET5R Packing Exploded View 1...
  • Page 63 Model No. : TH-L42ET5R Packing Exploded View 2...
  • Page 64 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks CAPACITORS C1958 F1G1E1030005 C 0.01UF 25V C2000 F1G1A105A047 C 1UF 10V C2014 F1K1E106A134 C 10UF, 25V C2023 F1G1C104A077 C 0.1UF 16V C2802 F1G1C1030008 C 0.01UF 16V...
  • Page 65 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks C5318 F1G1H182A830 C 1800PF 50V C5319 F1K1E106A134 C 10UF, 25V C5320 F1K1E106A134 C 10UF, 25V C5321 F1K1E106A134 C 10UF, 25V C5322 F1K1E106A134 C 10UF, 25V...
  • Page 66 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks C7302 F1J1H473A835 C 0.047UF, 50V C7303 F1J1H104A902 C 0.1UF, 50V C7304 F1A3A221A060 C 220PF 1KV C7305 F1J1H104A902 C 0.1UF, 50V C7306 F1J1H104A902 C 0.1UF, 50V...
  • Page 67 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks C8208 F1G1C104A077 C 0.1UF 16V C8210 F1G1C104A077 C 0.1UF 16V C8212 F1G1C104A077 C 0.1UF 16V C8215 F1G1C104A077 C 0.1UF 16V C8216 F1J1A106A087 C 10UF, 10V...
  • Page 68 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks C8765 F1J1A475A039 C 4.7UF, 10V C8850 F1G1E1030005 C 0.01UF 25V C8900 F1G1C104A077 C 0.1UF 16V C8901 F1G1C104A077 C 0.1UF 16V C8902 F1G1C104A077 C 0.1UF 16V...
  • Page 69 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks C9256 F1G1A104A069 C 0.1UF 10V C9259 F1G1A104A069 C 0.1UF 10V C9260 F1G1A104A069 C 0.1UF 10V C9261 F1G1A104A069 C 0.1UF 10V C9262 F1G1A104A069 C 0.1UF 10V...
  • Page 70 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks D7302 B0HAGQ000001 DIODE D7303 DZ2J039M0L DIODE D7304 B0HAGQ000001 DIODE D7305 B0ADCK000001 DIODE D7306 B0BC02500002 DIODE D7307 B0BC02500002 DIODE D7308 B0BC02500002 DIODE D7309 B0JAME000091...
  • Page 71 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks L3120 J0JYC0000156 INDUCTOR L4901 G1C150MA0533 INDUCTOR L4902 G1C150MA0533 INDUCTOR L4903 G1C150MA0533 INDUCTOR L4904 G1C150MA0533 INDUCTOR L5300 G1C150MA0445 INDUCTOR L5400 G1C4R7ZA0311 INDUCTOR L5420 G1C6R8MA0533...
  • Page 72 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks Q7402 B1CHRE000015 TRANSISTOR Q7403 B1CHRE000015 TRANSISTOR Q9350 B1ADCE000022 TRANSISTOR Q9351 B1ABCF000231 TRANSISTOR RESISTORS R0900 D0GA220JA023 M22 OHM, J.1/16 W R0901 D0GA220JA023 M22 OHM, J.1/16 W...
  • Page 73 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R3103 D0GD750JA052 M 75 OHM,J,1/8W R3104 D0GD750JA052 M 75 OHM,J,1/8W R3105 D0GD750JA052 M 75 OHM,J,1/8W R3121 D0GB104ZA041 M 100KOHM,J.1/10W R3123 D1HY2204A012 C 22OHM ,J, 1/16W...
  • Page 74 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R4752 D1BA1600A023 M 160 OHM,F.1/16 W R4753 D1BA82R0A014 M 82 OHM,F.1/16 W R4763 D0GA473JA023 M 47KOHM, J,1/16W R4764 D0GA473JA023 M 47KOHM, J,1/16W R4765...
  • Page 75 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R5402 D0GB911ZA037 M 910 OHM,1/10W R5403 D1BB2871A106 M 2.87 KOHM,F.1/10 W R5420 D0GAR00J0005 M 0 OHM, 1/16W R5421 D1BA3302A023 M 33KOHM,F. 1/16 W...
  • Page 76 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R7407 D0GD102JA052 M 1.0KOHM,J,1/8W R7408 D1BD1822A066 M 18.2KOHM,F.1/8W R7409 D0GD473JA052 M 47KOHM,J,1/8W R7410 D0GD153JA052 M 15KOHM,J,1/8W R7411 D0GD104JA052 M 100KOHM,J,1/8W R7412 D0GD153JA052 M 15KOHM,J,1/8W...
  • Page 77 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R8502 D0GAR00J0005 M 0 OHM, 1/16W R8503 D0GAR00J0005 M 0 OHM, 1/16W R8517 D0GAR00J0005 M 0 OHM, 1/16W R8518 D0GAR00J0005 M 0 OHM, 1/16W...
  • Page 78 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R8876 D0GA473JA023 M 47KOHM, J,1/16W R8877 D0GA473JA023 M 47KOHM, J,1/16W R8878 D0GA103JA023 M10KOHM, J.1/16 W R8880 D0GA103JA023 M10KOHM, J.1/16 W R8881 D0GA103JA023 M10KOHM, J.1/16 W...
  • Page 79 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R9302 D0GA223JA023 M 22K OHM J 1/16W R9307 D1BB2001A197 M 2 KOHM,F.1/10 W R9309 D1BB2001A197 M 2 KOHM,F.1/10 W R9311 D1BB6800A087 M 680 OHM,J.1/10W...
  • Page 80 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks JS0057 D0GAR00J0005 CHIP RESISTOR K1KA07A00292 CONNECTOR LF7103 G0B153G00003 LINE FILTER LF7104 G0B153G00003 LINE FILTER LF7105 G0B350HA0036 LINE FILTER K1KY15BA0386 CONNECTOR K1KA12BA0062 CONNECTOR PA7401 K5H502YA0063...
  • Page 81 Model No. : TH-L42ET5R Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks Exploded View K2CQ2YY00107 AC CORD K2KYYYY00204 AV CABLE COMPONENT K2KYYYY00205 AV CBVS CABLE L0EYAA000006 SPEAKER L0EYAA000007 SPEAKER L5EDDYY00366 LCD PANEL N2QAYB000585 REMOTE TRANSFORMER...

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