hit counter script
Panasonic TH-L42E5A Service Manual
  1. Manuals
  2. Brands
  3. Panasonic Manuals
  4. LCD TV
  5. Viera TH-L42E5A
  6. Service manual

Panasonic TH-L42E5A Service Manual

Hide thumbs Also See for TH-L42E5A:
Table of Contents

Advertisement

Quick Links

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 ------------------------------------------------------ 8
5.1. How to enter into Service Mode ----------------------- 8
5.1.1. Contents of adjustment mode --------------------- 8
5.1.2. How to exit---------------------------------------------- 8
5.2. SRV-TOOL -------------------------------------------------- 9
5.2.1. How to access ----------------------------------------- 9
5.2.2. Display of SOS History ------------------------------ 9
5.2.3. POWER ON TIME/COUNT ------------------------ 9
Model No.
Chassis:
Destination:
PAGE
5.2.4. Exit --------------------------------------------------------9
5.2.5. Self Check Mode ------------------------------------ 10
5.2.6. Hotel Mode Adjustment ---------------------------- 10
5.2.7. Hotel Mode-------------------------------------------- 10
6 Troubleshooting Guide --------------------------------------- 11
6.1. Check of the IIC bus lines------------------------------ 11
6.1.1. How to access --------------------------------------- 11
6.1.2. Exit ------------------------------------------------------ 11
6.1.3. Screen display --------------------------------------- 11
6.2. Power LED Blinking timing chart --------------------- 12
6.3. No Power--------------------------------------------------- 12
7.1. Control Button Fixing------------------------------------ 13
7.2. Speaker Bracket & Metal Bottom -------------------- 14
7.3. LCD Panel Assembly ----------------------------------- 15
7.6. Screw Fixing----------------------------------------------- 18
7.7. Bracket Assembly---------------------------------------- 19
7.8. LVDS FFC 1 ----------------------------------------------- 21
ORDER NO. MTV1204026CE
TH-L42E5A
LA35
AUSTRALIA
© Panasonic Corporation 2012. Unauthorized
copying and distribution is a violation of law.
LCD TV
PAGE

Advertisement

Table of Contents
loading

Related Manuals for Panasonic TH-L42E5A

Summary of Contents for Panasonic TH-L42E5A

  • Page 1: Table Of Contents

    7.6. Screw Fixing----------------------------------------------- 18 5.2.2. Display of SOS History ------------------------------ 9 7.7. Bracket Assembly---------------------------------------- 19 5.2.3. POWER ON TIME/COUNT ------------------------ 9 7.8. LVDS FFC 1 ----------------------------------------------- 21 © Panasonic Corporation 2012. Unauthorized copying and distribution is a violation of law.
  • Page 2 TH-L42E5A 7.9. LVDS FFC 2 ----------------------------------------------- 22 7.10. Barrier and Metal CH Frame Assembly ------------ 23 7.11. Shading Sheet Sticking --------------------------------- 25 7.12. Shading Plate Sticking ---------------------------------- 26 7.13. Bottom Cover Fixing------------------------------------- 27 7.14. Back Cover Assembly----------------------------------- 28 8 Measurements and Adjustments -------------------------- 29 8.1.

  • Page 3: Safety Precautions

    TH-L42E5A 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-L42E5A 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-L42E5A 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-L42E5A 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 GK BOARD Function SW for LGD panel Repairable K BOARD LED/RM/CATS Repairable...

  • Page 7: Specifications

    TH-L42E5A 4 Specifications Sound (75 mm × 22 mm) × 2, 8 Ω Speaker Audio Output 20 W (10 W + 10 W) M3 (3.5 mm) stereo mini Jack × 1 Headphones Receiving systems / Band name PAL B / G...

  • Page 8: Service Mode

    TH-L42E5A 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 9: Srv-Tool

    TH-L42E5A 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 10: Self Check Mode

    TH-L42E5A 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 11: Troubleshooting Guide

    TH-L42E5A 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 12: Power Led Blinking Timing Chart

    TH-L42E5A 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 13: Disassembly And Assembly Instructions

    TH-L42E5A 7 Disassembly and Assembly Instructions 7.1. Control Button Fixing Fixing all screw at panel, bracket and metal part. Part Num Description Remarks TBX5ZA00601 KEY_BUTTON XTW3+8TFJ SCREW (KEY BUTTON 2) 6 ± 1 Kgfcm XTV3+10JFJ SCREW (SP BKT4/KEY2) 6 ± 1 Kgfcm...

  • Page 14: Speaker Bracket & Metal Bottom

    TH-L42E5A 7.2. Speaker 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. Part Num Description TKX5ZA02501 SP BRACKET L0EYAA000006 SPEAKER UNIT L L0EYAA000007...

  • Page 15: Lcd Panel Assembly

    TH-L42E5A 7.3. LCD Panel Assembly Part Num Description L5EDDYY00359 LCD PANEL T4FP1505J PET TAPE 0.14 TKZ5ZX5006-1 VESA METAL...

  • Page 16: Lcd Panel Fixing & Handling Method

    TH-L42E5A 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 17: Led Panel And Bracket Assembly

    TH-L42E5A 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 18: Screw Fixing

    TH-L42E5A 7.6. Screw Fixing Fix all screw & clampers as indicate in below picture. Part Num Description Remarks THEJ036J SCREW (BTM6/VESA2/A10/P5) 60 ± 10 N.cm XTV3+10JFJ SCREW (KEY2/SP BKT4) 60 ± 10 N.cm THEJ024 SCREW (BTM METAL2) 60 ± 10 N.cm...

  • Page 19: Bracket Assembly

    TH-L42E5A 7.7. Bracket Assembly...
  • Page 20 TH-L42E5A Part Num Description TKZ5ZF50034 METAL_AV_BRACKET_SIDE TKZ5ZF50072 METAL_AV_BRACKET_BTM TEWB877 GASKET (AT BTM BRCT) TEWB386 GASKET...

  • Page 21: Lvds Ffc 1

    TH-L42E5A 7.8. LVDS FFC 1 Fixing LVDS wire. Part Num Description TSCFF0030023 LVDS FFC (41PIN) T4FP1505J PET TAPE (0.07X2) 0.14...

  • Page 22: Lvds Ffc

    TH-L42E5A 7.9. LVDS FFC 2 Fixing felt at LVDS wire. Part Num Description TSCFF0030023 LVDS CABLE TMK4GG049 SPONGE (AT BACK SIDE LVDS) TMK4GG050 SPONGE (AT BACK SIDE LVDS) TMK4GG051 SPONGE (AT BACK SIDE LVDS) TMK4GG052 SPONGE (AT BACK SIDE LVDS)

  • Page 23: Barrier And Metal Ch Frame Assembly

    TH-L42E5A 7.10. Barrier and Metal CH Frame Assembly...
  • Page 24 TH-L42E5A Part Num Description Remarks TMK4GX098 BARRIER P-PCB TUA5ZA04301 METAL_CH_FRAME_R TUA5ZA03201 METAL_CH_FRAME_L THEJ036J SCREW ( BTM6/VESA2/A10/P5) 6 ± 1 Kgfcm TEWB770 GASKET (AT CHASSIS METAL SCREW)

  • Page 25: Shading Sheet Sticking

    TH-L42E5A 7.11. Shading Sheet Sticking Part Num Description TMK4GX107 SHADING SHEET 42 (W7*L485*T0.085) 2 PC...

  • Page 26: Shading Plate Sticking

    TH-L42E5A 7.12. Shading Plate Sticking Part Num Description TMK4GX109 SHADING PLATE T4FP2005B BLACK TAPE 0.12 TEWF107 PET+AL tape (W20 x L30)

  • Page 27: Bottom Cover Fixing

    TH-L42E5A 7.13. Bottom Cover Fixing Fixing SPEAKER, SPENCER & BOTTOM COVER. Part Num Description TMME399 SPACER (P_PCB) TKP5ZA13801 BOTTOM COVER...

  • Page 28: Back Cover Assembly

    TH-L42E5A 7.14. Back Cover Assembly Part Num Description Remarks TKU5ZX04005 BACK COVER TMK4GX099 BARRIER BACK COVER THTD030J SCREW (BC17/BTM_COVER2) 100 ± 20 N.cm THEC1509 SCREW (BC15) 60 ± 10 N.cm TKKL5521 M6_CAP...

  • Page 29: Measurements And Adjustments

    TH-L42E5A 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. Power Supply Name Measurement Point Specification SUB1.1V TP8100 1.10V - 1.22V SUB1.5V TP8101 1.435V - 1.585V...

  • Page 30: Block Diagram

    TH-L42E5A 9 Block Diagram 9.1. Main Block Diagram MAIN NAND NAND FLASH SD CARD DATA SD IF SD CARD SLOT SUB3.3V IFD_OUT DDR3 TUNER SIF_OUT SUB5V Peaks PEAKS_EEPROM SUB1.1V SUB1.5V OVP DET SUB3.3V Y/PB/PR SUB_AI_3.3V USB5V COMP SUB9V P15V R/G/B/H/V STB1.1V...

  • Page 31: Detailed Block Diagram (1/2)

    TH-L42E5A 9.2. Detailed Block Diagram (1/2) MAIN POWER IC7301, IC7502 STB6V IC7201, Q7301, 5.8VS T7202, Q7302 T7301 D7407 PA7403 D7106 Q7201 5.8VS RECTIFIER P15V CONVERTER Q7403 D7408,9 PA7402 +16V CF7101,2 +16V Q7402 +16V DETECT D7401,2 IC7401 PC7301 PHOTO ERROR COUPLER...

  • Page 32: Detailed Block Diagram (2/2)

    TH-L42E5A 9.3. Detailed Block Diagram (2/2) CN8660 SPEAKER_R SPEAKER_L SD CARD JK3005B D3006 JK3001 JK8450 JK8451 JK8600A JK4701A JK4700A JK4702A JK4703A FACTORY DIGITAL PC IN COMPONENT USB1 USB2 ETHERNET AUDIO OUT MAIN MAIN HDMI2 HDMI1 HDMI3 HDMI4 CN0100 DMC_IIC0 IIC0...

  • Page 33: Wiring Connection Diagram

    TH-L42E5A 10 Wiring Connection Diagram 10.1. Wire Dressing Do wire dressing follow below spec: Part Num Description T4FP1505J PET TAPE (0.07X6) 0.42 TMME268 CLAMPER (BTM METAL1) Clampers / Tapes Cables P4-LD/GK4 P2 - A02 SP (R) - A12 SP (L) - A12...

  • Page 34: Schematic Diagram

    TH-L42E5A 11 Schematic Diagram 11.1. Schematic Diagram Notes...

  • Page 35: A-Board (1/17) Schematic Diagram

    TH-L42E5A 11.2. A-Board (1/17) Schematic Diagram...

  • Page 36: A-Board (2/17) Schematic Diagram

    TH-L42E5A 11.3. A-Board (2/17) Schematic Diagram...

  • Page 37: A-Board (3/17) Schematic Diagram

    TH-L42E5A 11.4. A-Board (3/17) Schematic Diagram...

  • Page 38: A-Board (4/17) Schematic Diagram

    TH-L42E5A 11.5. A-Board (4/17) Schematic Diagram...

  • Page 39: A-Board (5/17) Schematic Diagram

    TH-L42E5A 11.6. A-Board (5/17) Schematic Diagram...

  • Page 40: A-Board (6/17) Schematic Diagram

    TH-L42E5A 11.7. A-Board (6/17) Schematic Diagram...

  • Page 41: A-Board (7/17) Schematic Diagram

    TH-L42E5A 11.8. A-Board (7/17) Schematic Diagram...

  • Page 42: A-Board (8/17) Schematic Diagram

    TH-L42E5A 11.9. A-Board (8/17) Schematic Diagram...

  • Page 43: A-Board (9/17) Schematic Diagram

    TH-L42E5A 11.10. A-Board (9/17) Schematic Diagram...

  • Page 44: A-Board (10/17) Schematic Diagram

    TH-L42E5A 11.11. A-Board (10/17) Schematic Diagram...

  • Page 45: A-Board (11/17) Schematic Diagram

    TH-L42E5A 11.12. A-Board (11/17) Schematic Diagram...

  • Page 46: A-Board (12/17) Schematic Diagram

    TH-L42E5A 11.13. A-Board (12/17) Schematic Diagram...

  • Page 47: A-Board (13/17) Schematic Diagram

    TH-L42E5A 11.14. A-Board (13/17) Schematic Diagram...

  • Page 48: A-Board (14/17) Schematic Diagram

    TH-L42E5A 11.15. A-Board (14/17) Schematic Diagram...

  • Page 49: A-Board (15/17) Schematic Diagram

    TH-L42E5A 11.16. A-Board (15/17) Schematic Diagram...

  • Page 50: A-Board (16/17) Schematic Diagram

    TH-L42E5A 11.12. A-Board (11/17) Schematic Diagram...

  • Page 51: A-Board (17/17) Schematic Diagram

    TH-L42E5A 11.18. A-Board (17/17) Schematic Diagram...

  • Page 52: Gk-Board Schematic Diagram

    TH-L42E5A 11.19. GK-Board Schematic Diagram...

  • Page 53: K-Board Schematic Diagram

    TH-L42E5A 11.20. K-Board Schematic Diagram...

  • Page 54: P-Board Schematic Diagram

    TH-L42E5A 11.21. P-Board Schematic Diagram...

  • Page 55: Printed Circuit Board

    TH-L42E5A 12 Printed Circuit Board 12.1. A-BOARD A-BOARD (TOP COMPONENT SIDE) TNPH0993 I C 9 9 8 0 R 2 7 1 2 C N 0 1 0 0 I C 9 9 8 0 R 0 9 2 2...
  • Page 56 TH-L42E5A A-BOARD (BOTTOM COMPONENT SIDE) TNPH0993 T P 0 9 1 1 T P 0 9 0 9 T P 0 9 0 7 T P 0 9 0 5 T P 0 9 0 3 T P 0 9 0 1...

  • Page 57: K-Board

    TH-L42E5A 12.2. K-BOARD K-BOARD (TOP COMPONENT SIDE) TNPA5604 S U F F I X . C R N O . 2 R 2 8 0 3 R 2 8 0 9 D 2 8 0 3 R 2 8 0 4...

  • Page 58: P-Board

    TH-L42E5A 12.3. P-BOARD P-BOARD (TOP COMPONENT SIDE) TNPA5608 Z A 7 1 0 1 Z A 7 1 0 2 T N P A 5 6 0 8 1 3 2 C 7 4 2 3 O R D E R N O .
  • Page 59 TH-L42E5A P-BOARD (BOTTOM COMPONENT SIDE) TNPA5608 Z A 7 1 0 2 Z A 7 1 0 1 C 7 4 2 3 1 3 2 1 0 3 C 7 4 2 2 1 3 1 2 0 7...

  • Page 60: Exploded View And Replacement Parts List

    TH-L42E5A 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 61: Electrical Replacement Parts List

    TH-L42E5A 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 C5305 F1K1E106A134 C 10UF , 25V C5308 F1G1H1020008 C 1000PF , 50V...
  • Page 62 TH-L42E5A Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks C7313 F1J1H102A909 C 1000PF , 50V C8310 F1G1A105A047 C 1UF , 10V C7314 F1J1H101A906 C 100PF , 50V C8311 F1G1A105A047 C 1UF , 10V...
  • Page 63 TH-L42E5A Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks D7216 B0HASR000018 DIODE L7401 J0JKB0000034 EMI FILTER D7217 B0BC02500002 DIODE L7402 J0JKB0000034 EMI FILTER D7301 DZ2J039M0L DIODE L7403 EXCELSA39V BEAD CORE...
  • Page 64 TH-L42E5A Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R1953 D0GA103JA023 C 10KOHM ,J, 1/16W R4723 D0GA473JA023 C 47KOHM ,J, 1/16W R2000 D0GA433JA023 C 43KOHM ,J, 1/16W R4724 D0GA102JA023 C 1KOHM ,J, 1/16W...
  • Page 65 TH-L42E5A Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R5303 D0GB102ZA038 1KOHM , 1/16W R7408 D1BD1822A066 C 18.2KOHM , 1/16W R5304 D0GA473JA023 C 47KOHM ,J, 1/16W R7409 D0GD473JA052 C 47KOHM ,J, 1/16W...
  • Page 66 TH-L42E5A Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R8629 D0GA472JA023 C 4.7KOHM ,J, 1/16W FL4000 J0ZZB0000147 COIL R8630 D0GA680JA023 C 68OHM ,J, 1/16W FL4001 J0ZZB0000147 COIL R8631 D0GA680JA023 C 68OHM ,J, 1/16W...
  • Page 67 Model No. : TH-L42E5A Parts Location...
  • Page 68 Model No. : TH-L42E5A Packing Exploded View 1...
  • Page 69 Model No. : TH-L42E5A Packing Exploded View 2...
  • Page 70 Model No. : TH-L42E5A Parts List Ref. Safety Part No. Part Name & Description Q'ty Remarks K2CJ2YY00089 AC CORD K2KYYYY00204 AV CABLE COMPONENT K2KYYYY00205 AV CBVS CABLE L0EYAA000006 SPEAKER L0EYAA000007 SPEAKER L5EDDYY00359 LCD PANEL N2QAYB000748 REMOTE CONTROL TBL5ZX03641 PEDESTAL ASSY...

Table of Contents