Panasonic TH-L50B6A Service Manual
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Panasonic TH-L50B6A 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 ------------------------------------------------------ 8
5.1. How to enter into Service Modes ---------------------- 8
5.1.1. Contents of adjustment mode --------------------- 8
5.1.2. How to exit---------------------------------------------- 8
5.1.3. Display of SOS History ------------------------------ 9
5.1.4. POWER ON TIME/COUNT ------------------------ 9
5.1.5. Exit-------------------------------------------------------- 9
5.1.6. Self Check Mode-------------------------------------10
All manuals and user guides at all-guides.com
PAGE
TH-L50B6A
Model No.
Chassis:
KM21
Destination:
AUSTRALIA
5.1.7. Hotel Mode Adjustment ---------------------------- 10
5.1.8. 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
6.2. Power LED Blinking timing chart --------------------- 12
6.3. No Power--------------------------------------------------- 12
7.1. Speaker Bracket ----------------------------------------- 13
7.2. LCD Panel Assembly ----------------------------------- 14
7.4. LED Panel and Bracket Ass'y------------------------- 16
7.5. Vesa Metal ------------------------------------------------- 17
7.6. Side Metal Bracket--------------------------------------- 18
7.7. Metal Bracket 1 ------------------------------------------- 19
7.8. Metal Bracket 2 ------------------------------------------- 20
7.9. Metal Bracket Bottom ---------------------------------- 21
7.10. PCB Installation ------------------------------------------ 22
7.11. Pedestal Ass'y 1------------------------------------------ 23
ORDER NO. MTV1301098CE
LED TV
PAGE
© Panasonic Corporation 2013.

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Summary of Contents for Panasonic TH-L50B6A

  • Page 1: Table Of Contents

    5.1.3. Display of SOS History ------------------------------ 9 7.8. Metal Bracket 2 ------------------------------------------- 20 5.1.4. POWER ON TIME/COUNT ------------------------ 9 7.9. Metal Bracket Bottom ---------------------------------- 21 5.1.5. Exit-------------------------------------------------------- 9 7.10. PCB Installation ------------------------------------------ 22 5.1.6. Self Check Mode-------------------------------------10 7.11. Pedestal Ass’y 1------------------------------------------ 23 © Panasonic Corporation 2013.
  • Page 2 All manuals and user guides at all-guides.com TH-L50B6A 7.12. Pedestal Ass’y 2------------------------------------------ 24 7.13. Stand MTG Assy ----------------------------------------- 25 7.14. Back Cover Installation --------------------------------- 26 7.15. Handling SPEC ------------------------------------------- 27 8 Measurements and Adjustments -------------------------- 28 8.1. Voltage chart of A-board-------------------------------- 28 8.2.

  • Page 3: Safety Precautions

    All manuals and user guides at all-guides.com TH-L50B6A 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.

  • Page 4: Warning

    All manuals and user guides at all-guides.com TH-L50B6A 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)

    All manuals and user guides at all-guides.com TH-L50B6A 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.

  • Page 6: Service Navigation

    All manuals and user guides at all-guides.com TH-L50B6A 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 (For 32” include function SW) Repairable GK BOARD...

  • Page 7: Specifications

    All manuals and user guides at all-guides.com TH-L50B6A 4 Specifications Power Rating AC 220 - 240 V, 50/60 Hz 0.76 A Normal (Home) mode 74 W Standby power consumption 0.2 W Display panel Panel TFT LCD Module with LED Backlight...

  • Page 8: Service Mode

    All manuals and user guides at all-guides.com TH-L50B6A 5 Service Mode 5.1. How to enter into Service Modes While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds.

  • Page 9: Display Of Sos History

    All manuals and user guides at all-guides.com TH-L50B6A 5.1.3. 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 shipment setting].

  • Page 10: Self Check Mode

    All manuals and user guides at all-guides.com TH-L50B6A 5.1.6. 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. NOTE: After self check, the following process need to follow.

  • Page 11: Troubleshooting Guide

    All manuals and user guides at all-guides.com TH-L50B6A 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...

  • Page 12: Power Led Blinking Timing Chart

    All manuals and user guides at all-guides.com TH-L50B6A 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...

  • Page 13: Disassembly And Assembly Instructions

    All manuals and user guides at all-guides.com TH-L50B6A 7 Disassembly and Assembly Instructions 7.1. Speaker Bracket 1. Fix Speaker Left & Right. 2. Fix Key button. 3. Stick SPONGE at speaker (Left & Right). Description Remarks SPEAKER UNIT KEY BUTTON BRACKET 10 ...

  • Page 14: Lcd Panel Assembly

    All manuals and user guides at all-guides.com TH-L50B6A 7.2. LCD Panel Assembly Install LCD panel to cabinet. Description LCD PANEL...

  • Page 15: Lcd Panel Fixing & Handling Method

    All manuals and user guides at all-guides.com TH-L50B6A 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 16: Led Panel And Bracket Ass'y

    All manuals and user guides at all-guides.com TH-L50B6A 7.4. LED Panel and Bracket Ass’y 1. Fixing wire A10 to K PCB. 2. Fixing K PCB to LED Panel. 3. Fixing LED Panel to cabinet. Description LED PANEL...

  • Page 17: Vesa Metal

    All manuals and user guides at all-guides.com TH-L50B6A 7.5. Vesa Metal 1. Fix Vesa Metal & screw. 2. Stick felt at all Vesa Metal - 4 pcs. Part No Description Remarks TKZ5ZX50531 VESA METAL 23  23  0.55t (8mm hole)

  • Page 18: Side Metal Bracket

    All manuals and user guides at all-guides.com TH-L50B6A 7.6. Side Metal Bracket Description METAL_BRACKET-SIDE (L/R)

  • Page 19: Metal Bracket 1

    All manuals and user guides at all-guides.com TH-L50B6A 7.7. Metal Bracket 1 Description METAL LED DRIVER METAL VERTICAL L METAL VERTICAL R METAL MTG A BOARD...

  • Page 20: Metal Bracket

    All manuals and user guides at all-guides.com TH-L50B6A 7.8. Metal Bracket 2 1. Fix screw all screw. 2. Stick felt at LCD Panel (Control Button & speaker area). Description Remarks SCREW (P10/A4/DRIVER4/VESA4) 6 ±1 kgf.cm 8  110  0.35t FELT 15 ...

  • Page 21: Metal Bracket Bottom

    All manuals and user guides at all-guides.com TH-L50B6A 7.9. Metal Bracket Bottom 1. Fix screw at bottom cover. 2. Fix screw at Metal Bracket Bottom. Description Remarks METAL BRACKET BOTTOM BOTTOM COVER SCREW (P10/A4/DRIVER4/VESA4) 6 ±1 kgf.cm SCREW (BTM MTG4) 7~8 kgf.cm...

  • Page 22: Pcb Installation

    All manuals and user guides at all-guides.com TH-L50B6A 7.10. PCB Installation 1. Install P & A-Board and fix it with screws. 2. Install Side AV Bracket and fix with screws. Description Remarks SCREW (P10/A4/DRIVER4/VESA4) 6 ±1 kgf.cm SCREW (SP4) 8 ±1 kgf.cm...

  • Page 23: Pedestal Ass'y

    All manuals and user guides at all-guides.com TH-L50B6A 7.11. Pedestal Ass’y 1 Fix Rubber foot 6 pc at base cover. Part No Description TBL5ZA34581 PEDESTAL BASE TBL5ZB33341 BASE COVER TMK4GA027 FELT TBL5ZA34511 NECK BASE...

  • Page 24: Pedestal Ass'y

    All manuals and user guides at all-guides.com TH-L50B6A 7.12. Pedestal Ass’y 2 Fix Rubber foot 6 pc at base cover. Part No Description Remarks TBL4GG3009 RUBBER FOOT XTS4 + 10GFJ SCREW 11 ± 2 kgf.cm XYN5 + F15FJ SCREW 14 ± 2 kgf.cm...

  • Page 25: Stand Mtg Assy

    All manuals and user guides at all-guides.com TH-L50B6A 7.13. Stand MTG Assy 1. Insert stand metal in plastic bag. 2. Insert screw in plastic bag (2 type). 3. Fold plactic bag and stick paper tape. 4. Stick barcode label at plastic bag.

  • Page 26: Back Cover Installation

    All manuals and user guides at all-guides.com TH-L50B6A 7.14. Back Cover Installation 1. Install Back Cover. 2. Fix screws. Description Remarks BACK COVER SCREW (B7) 6 ± 1 kgf.cm SCREW (TERMINAL5/L2/CTRL2) 6 ± 1 kgf.cm SCREW(BC17) 11 ± 2 kgf.cm SCREW (BC17) 9 ±...

  • Page 27: Handling Spec

    All manuals and user guides at all-guides.com TH-L50B6A 7.15. Handling SPEC ■ Moving the LCD module The module should be handle by two people and hold on that top and bottom long side by both hands without module warping. Never handle the module with keeping horizontal position when moving the module in order to avoid internal damage and deformation.

  • Page 28: Measurements And Adjustments

    All manuals and user guides at all-guides.com TH-L50B6A 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...

  • Page 29: Block Diagram

    All manuals and user guides at all-guides.com TH-L50B6A 9 Block Diagram 9.1. Main Block Diagram XERWE0 XERWE0 STB5/5VS S12/S5 CPU BUS XECS1 CTRL AAR/DATA ERXW S5/ S3.3 (SD-Data-VCC) BOOTSWAP S9 REG S9-REG Analog XRST 3.3/1.8 ASIC XRSTSTM UHS-1 < (SDVOLC)

  • Page 30: Wiring Connection Diagram

    All manuals and user guides at all-guides.com TH-L50B6A 10 Wiring Connection Diagram 10.1. Wire Dressing 1 Do wire dressing follow below spec. Description Remarks 0.07  8 PET TAPE (GREY W=15mm) 0.55 0.10  2 PET TAPE (GREY W=15mm) LVDS CABLE...

  • Page 31: Wire Dressing

    All manuals and user guides at all-guides.com TH-L50B6A 10.2. Wire Dressing 2 Stick sponge at LVDS cable. Description SPONGE SPONGE LVDS CABLE...

  • Page 32: Schematic Diagram

    All manuals and user guides at all-guides.com TH-L50B6A 11 Schematic Diagram Model No. : TH-L50B6A A-Board (1/18)
  • Page 33 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (2/18-1)

  • Page 34: Exploded View And Mechanical Replacement Parts List

    All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (2/18-2)
  • Page 35 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (3/18)
  • Page 36 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (4/18)
  • Page 37 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (5/18)
  • Page 38 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (6/18)
  • Page 39 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (7/18-1)
  • Page 40 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (7/18-2)
  • Page 41 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (8/18)
  • Page 42 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (9/18)
  • Page 43 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (10/18)
  • Page 44 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (11/18)
  • Page 45 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (12/18)
  • Page 46 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (13/18)
  • Page 47 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (14/18)
  • Page 48 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (15/18)
  • Page 49 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (16/18)
  • Page 50 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (17/18)
  • Page 51 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (18/18)
  • Page 52 All manuals and user guides at all-guides.com Model No. : TH-L50B6A GK-Board...
  • Page 53 All manuals and user guides at all-guides.com Model No. : TH-L50B6A K-Board...
  • Page 54 All manuals and user guides at all-guides.com Model No. : TH-L50B6A LD-Board...
  • Page 55 All manuals and user guides at all-guides.com Model No. : TH-L50B6A P-Board (1/2)
  • Page 56 All manuals and user guides at all-guides.com Model No. : TH-L50B6A P-Board (2/2)

  • Page 57: Printed Circuit Board

    All manuals and user guides at all-guides.com TH-L50B6A 12 Printed Circuit Board Model No. : TH-L50B6A A-Board (Top Component Side)
  • Page 58 All manuals and user guides at all-guides.com Model No. : TH-L50B6A A-Board (Bottom Component Side)
  • Page 59 All manuals and user guides at all-guides.com Model No. : TH-L50B6A GK-Board...
  • Page 60 All manuals and user guides at all-guides.com Model No. : TH-L50B6A K-Board...
  • Page 61 All manuals and user guides at all-guides.com Model No. : TH-L50B6A LD-Board...
  • Page 62 All manuals and user guides at all-guides.com Model No. : TH-L50B6A P-Board (Top Component Side)
  • Page 63 All manuals and user guides at all-guides.com Model No. : TH-L50B6A P-Board (Bottom Component Side)

  • Page 64: Exploded View And Replacement Parts List

    All manuals and user guides at all-guides.com TH-L50B6A 13 Exploded View and Replacement Parts List Model No. : TH-L50B6A Parts Location...
  • Page 65 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Packing Exploded View 1...
  • Page 66 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Packing Exploded View 2...
  • Page 67 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks CAPACITORS C1958 F1G1E103A059 C 0.01UF 25V C2000 F1G1A105A047 C 1UF 10V C2014 F1K1E106A134 C 10UF, 25V...
  • Page 68 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks C5402 F1G1C104A077 C 0.1UF 16V C5403 F1J0J2260004 C 22 UF 6.3 V C5404 F1J0J2260004 C 22 UF 6.3 V...
  • Page 69 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks C7304 F1A3A221A060 C 220PF 1KV C7305 F1J1H104A902 C 0.1UF, 50V C7306 F1J1H104A902 C 0.1UF, 50V C7307...
  • Page 70 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks C8105 F1G1E332A144 C 3300PF , 25V C8107 F1J0G2260001 C 22 UF 4 V C8108 F1J0G2260001 C 22 UF 4 V...
  • Page 71 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks D3006 K7AAAY000016 DIODE D3101 DZ2J140M0L DIODE D3102 DZ2J140M0L DIODE D3103 DZ2J140M0L DIODE D3104 DZ2J140M0L DIODE D3105...
  • Page 72 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks D9816 DA2JF2300L DIODE INTEGRATED CIRCUITS IC3052 C0ABBB000179 IC4900 C1AB00003984 IC5000 AN34043AAVF IC5400 C0DBAYY01299 IC5420 C0DBAYY01299 IC5421 C0DBAYY01300...
  • Page 73 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks Q2013 B1ABCE000015 TRANSISTOR Q3102 B1ABCE000015 TRANSISTOR Q3103 B1ABCE000015 TRANSISTOR Q4702 B1ABCF000231 TRANSISTOR Q4709 B1ABCF000231 TRANSISTOR Q4981...
  • Page 74 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R2010 D0GDR00J0004 M 0 OHM, 1/8W R2013 D0GA101JA039 M 100OHM,J.1/10W R2014 D0GA101JA039 M 100OHM,J.1/10W R2016 D0GA302JA023...
  • Page 75 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R4752 D1BA1600A023 M 160 OHM,F.1/16 W R4753 D1BA82R0A023 M 82KOHM , 1/8W R4764 D0GA473JA039 M 47KOHM J. 1/10W...
  • Page 76 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R5429 D1BA1402A023 M 14KOHM,F. 1/16 W R5430 D1BA1001A023 M 1 KOHM,F.1/16 W R5431 D0GA473JA039 M 47KOHM J. 1/10W...
  • Page 77 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R7401 D0GD472JA052 M 4.7KOHM,J,1/8W R7402 D0GD103JA052 M 10KOHM,J,1/8W R7403 D0GD102JA052 M 1.0KOHM,J,1/8W R7404 D0GD104JA052 M 100KOHM,J,1/8W...
  • Page 78 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R8307 D0GA360JA023 M 36 OHM, J,1/16W R8450 D0GA103JA039 M 10KOHM,F,1/16W R8451 D0GA103JA039 M 10KOHM,F,1/16W R8455 D0GA103JA039...
  • Page 79 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks R9831 D0GD2R2JA059 M 2.2 OHM,J.1/4W R9832 D0GD103JA052 M 10KOHM,J,1/8W R9833 D0GD123JA052 M 12KOHM,J,1/8W R9834 D0GD184JA052 M 180KOHM,J,1/8W...
  • Page 80 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks PA7406 ERBRE5R00V FUSE RESISTOR PC7301 B3PAA0000674 PHOTO COUPLER PC7302 B3PAA0000674 PHOTO COUPLER PC7303 B3PAA0000674 PHOTO COUPLER...
  • Page 81 All manuals and user guides at all-guides.com Model No. : TH-L50B6A Parts List Ref. Change Safety Part No. Part Name & Description Q'ty Remarks Exploded View K2CJ2YY00087 AC CORD L0EYAA000026 SPEAKER UNIT L5EDDYY00474 LCD PANEL N2QAYB000817 REMOTE TRANSMITTER TBL5ZX06661 PEDESTAL ASSY...

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