Panasonic TX-L55DT50E Service Manual
Panasonic TX-L55DT50E Service Manual

Panasonic TX-L55DT50E Service Manual

La35 chassis
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Service Manual
Specifications
Power Source:
Rated Power Consumption:
Stand-by Power Consumption: 0.20W
Aerial Impedance:
Receiving System:
220-240V AC, 50 / 60Hz
149W
75 unbalanced, Coaxial Type
DVB-T
Digital terrestrial services
DVB-C
Digital cable services
DVB-S/S2
Digital satellite services
Receiver frequency range – 950 MHz to 2,150MHz
LNB Power and Polarisation – Vertical: +13V
22 kHz Tone – Frequency: 22kHz ± 2kHz
Symbol Rate – Max. 30MS/s
FEC Mode – 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10
Demodulation – QPSK, 8PSK
DiSEqC – Version 1.0.
PAL I/H, B/G,
SECAM B/G, L/L'
VHF E2-E12
VHF A-H ( ITALY )
CATV (S01-S05)
CATV S11-S20 (U1-U10)
PAL D/K,
SECAM D/K
VHF R1-R2
VHF R6-R12
PAL 525/60
(AV only)
M.NTSC
(AV only)
NTSC
(AV only)
LCD Television
TX-L55DT50E
LA35 Chassis
(MPEG2 and MPEG4-AVC(H.264))
(MPEG2 and MPEG4-AVC(H.264))
(MPEG2 and MPEG4-AVC(H.264))
Horizontal: +18V
Current: Max. 500mA (overload protection)
Amplitude: 0.6V ± 0.2V
VHF H1-H2 ( ITALY )
UHF E21-E69
CATV S1-S10(M1-M10)
CATV S21-S41 (HYPERBAND)
VHF R3-R5
UHF E21-E69
© Panasonic Corporation 2012.
Unauthorized copying and
distribution is a violation of law.
ORDER No. PCZ1204079CE

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Summary of Contents for Panasonic TX-L55DT50E

  • Page 1 CATV S11-S20 (U1-U10) CATV S21-S41 (HYPERBAND) PAL D/K, SECAM D/K VHF R1-R2 VHF R3-R5 VHF R6-R12 UHF E21-E69 PAL 525/60 (AV only) M.NTSC (AV only) NTSC (AV only) © Panasonic Corporation 2012. Unauthorized copying and distribution is a violation of law.
  • Page 2 Aerial - Rear: VHF/UHF Satellite dish input: Female F-type 75 Operating Conditions: 0°C  35°C Temperature: 20%  80% RH (non condensing) Humidity: Terminals: AV1 IN Video (21 pin) 1V p-p 75 Audio (21 pin) 500mV rms 10k RGB (21 pin) 0.7V p-p 75...
  • Page 3 Dimensions: Width: Height: Depth: Including TV stand 1,237mm 773mm 290mm TV set only 1,237mm 726mm 27mm Mass: Including TV stand 22.5kg TV set only 17.0kg Design and Specifications are subject to change without notice. Mass and dimensions shown are approximate. This equipment complies with the EMC standards listed below: EN55013, EN61000-3-2, EN61000-3-3, EN55020, EN55022, EN55024 Warning...
  • Page 4: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ........... 5 GENERAL GUIDE LINES........5 TOUCH – CURRENT CHECK....... 5 PREVENTION OF ELECTROSTATIC DISCHARGE (ESD) TO ELECTROSTATICALLY SENSITIVE (ES) DEVICES ..............6 ABOUT LEAD FREE SOLDER (PBF)......7 SUGGESTED PB FREE SOLDER......7 APPLICABLE SIGNALS..........8 SERVICE HINTS ............
  • Page 5: Safety Precautions

    Safety Precautions General Guide Lines 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. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
  • Page 6: Prevention Of Electrostatic Discharge (Esd) To Electrostatically Sensitive (Es) Devices

    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"...
  • Page 7: About Lead Free Solder (Pbf)

    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). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
  • Page 8: Applicable Signals

    Applicable Signals Component (Y, Pb, Pr) (from AV2 terminal), HDMI Signal name COMPONENT HDMI 525 (480) / 60i,60p 625 (576) / 50i, 50p 750 (720) / 60p, 50p 1,125 (1,080) / 60i, 50i 1,125 (1,080) / 60p 1,125 (1,080) / 50p 1,125 (1,080) / 24p PC (from D-sub 15P) Applicable input signal for PC is basically compatible to VESA standard timing.
  • Page 9: Service Hints

    Service Hints How to remove the backcover Remove the 1 fixing screw and WIFI DONGLE. (see Fig.5) Remove the 1 fixing screw and BT DONGLE. (see Fig.5) SCREWS (2) THEC1509 /2pcs/ Fig.5 Remove the 31 fixing screws, 4 caps and the backcover. (see Fig.6) SCREWS (1) THEC1509 /31pcs/ (3) TKKL55351 /4pcs/...
  • Page 10: Chassis Board Layout

    Chassis Board Layout P-Unit A-Board LD-Board TC-Unit on panel RM-Unit K-Board LP-Board Board Name Function A-Board AV Terminal, HDMI, HDMI Switch, USB, USB HUB, Digital Audio Out, Tuner DVB-T/T2/C/S/S2, SD Card, CI slot, PC, Ethernet, Wireless LAN, Bluetooth, Peaks IC, Speakers out, EEPROM, Flash Memory, DDR SDRAM P-Unit Main Input, Power Supply, Key control, Power switch LD-Board...
  • Page 11: Technical Description

    CI PLUS DTCP-IP Widevine Netflix (for USB Rec.) TX-L55DT50E USB HDD Recording: General information: Digital TV programmes can be recorded in USB HDD. A One-to-One key generated in A-board by SELF CHECK binds TV and USB-HDD for communication. That key is only one key for them. If the key is difference, TV can not access USB-HDD.
  • Page 12: Setting Inspection

    Setting Inspection Voltage Confirmation A board Description Test point Voltage SUB1.1V TP8100 1.10V - 1.22V SUB 1.5 V TP8101 1.435V - 1.585V SUB1.8V TP8700 1.7V – 1.9V SUB3.3V TP5400 3.17V – 3.43V SUB5V TP5420 4.80V - 5.25V USB5V TP5440 4.94V – 5.40V FE1.2V TP5780 1.14V –...
  • Page 13: Self Check

    Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To enter Self-Check mode, keep pressing the down (-/v) button on the TV set and press the STATUS button on the remote control. To exit Self Check, switch off the TV set at the power button. TX-L55DT50E 55FHD Panasonic 2012LCD Self Check Complete C1C9 O.K.
  • Page 14: Power Led Blinking Timing Chart

    Power LED blinking timing chart Subject Information of LED Flashing timing chart. Contents When abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by number of blinking of the Power LED on the front panel of the unit. Blinking Blinking timing Contents...
  • Page 15: Service Mode Function

    Service Mode Function MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Service Menu How to enter SERVICE While pressing (-/v) button on the TV unit, press on the remote control for 3 times within 2 seconds.
  • Page 16: Service

    SERVICE SERVICE Peaks SOFT 1.213 OPTION 1 34 Key Command ADJUST Peaks EEP 01.04.0010 OPTION 2 ee S e r v i c e 1 WB-ADJ LSI PACKAGE 2.424 OPTION 3 OPTION LSI DATA 1.00.08 OPTION 4 11 SRV-TOOL STBY SOFT 1.03.02 MODEL ID 09 ...
  • Page 17: Service Tool Mode

    Service Tool Mode How to access Select [SRV-TOOL] in Service Mode. Press [OK] button on the remote control. SRV-TOOL Display of TD2Microcode version TD2Microcode:005a0910 Flash ROOM: AD – F1 Display of Flash ROM maker code POWER ON TIME/COUNT PTCT:00.00.00.00.00 Time 00051:30 On/Off 0000042 Display of SOS History Press [MUTE] button (3sec)
  • Page 18: Hotel Mode

    Hotel Mode 1. Purpose Restrict a function for hotels. 2. Access command to the Hotel mode setup menu. In order to display the Hotel mode setup menu, please enter the following command (within 2 second). [TV] : Vol.[Down] + [REMOTE] : AV (3 times) Then, the Hotel mode setup menu is displayed.
  • Page 19: Data Copy By Sd Card

    Data Copy by SD Card Purpose a) Board replacement (Copy the data when exchanging A-board): When exchanging A-board, the data in original A-board can be copied to SD card and then copy to new A-board. Following data can be copied. (Before exchanging) User setting data Copy to SD card...
  • Page 20: Data Copy From Tv Set To Sd Card

    Data Copy from TV set to SD Card Turn on the TV set. Insert SD card with a startup file (pwd file) to SD slot. On-screen Display will be appeared according to the startup file automatically. Input a following password for (a) or (b) by using remote control. (a) For Board replacement: 2770 (b) For Hotel: 4850 Data will be copied from TV set to SD card.
  • Page 21: Data Copy From Sd Card To Tv Set

    Data Copy from SD Card to TV set Turn on the TV set. Insert SD card with Data to SD slot. On-screen Display will be appeared according to the Data folder automatically. Input a following password for (a) or (b) by using remote control. (a) For Board replacement: 2771 (b) For Hotel: 4851 Data will be copied from SD card to TV set.
  • Page 22: Option Bytes Description

    Option Bytes Description OPTION1 TEXT Ch Refresh ON (1) / OFF (0) ID-1 ON (1) / OFF (0) Macrovision Auto-judge ON (1) / OFF (0) Surround enable low bit ON (1) / OFF (0) Surround enable high bit ON (1) / OFF (0) Enable HDMI force reset ON (1) / OFF (0) TINT_Component_HDMI...
  • Page 23: Adjustment Method

    Adjustment Method Sub-Contrast/White Balance Adjustment Instrument Name Connect to Remarks Remote controller Correlation can be also taken by LCD WB meter (Minolta CA-210 or equivalent) CS-1000A or equivalent Comunication jig Computer for external control Procedure Remarks Let the panel standfor more than 3 hours at more than 20 C.
  • Page 24: Wiring Diagram

    Wiring Diagram LCD PANEL...
  • Page 25: Block Diagram (1 Of 2)

    SP_R SP_L Woofer Block Diagram (1/2) JK1070 CN8660 CI SLOT SD SLOT 17,18 51,52 A-BOARD [EXCHANGE UNIT] LNB_PWR Wo- Wo+ IC6851 DISEQC_IIC1 [C1AB00003807] DMD_ IIC1 SUB1.8V SI_3.3V 11,12 14,15 26,27 29,30 11,12 14,15 12,13,14, IC8900 IC8902 FE_1.2V/2.5V NAND FLASH EEPROM LDA4 TU_1.2V HS1BCLKIN IC4900...
  • Page 26 Block Diagram (2/2) K-BOARD LP-BOARD SUB3.3V SN2800 R LED G LED LP10 STBY 3.3V STBY 3.3V SUB3.3V D2880 D2881 D2882 D2883 D2800 R LED G LED LD-BOARD LED-K16 LED-K15 LED-K14 LED-K13 LED-K12 LED-K11 LED-K10 LED-K9 10,12 14,16 LED-K8 PWMRST 64-71 LED-K7 PWM_CLK LED-K6...
  • Page 27: Parts Location

    Parts Location NOTE: The numbers on the exploded view below refer to the exploded view section of the Replacement Parts List. TEWF383 TEWF383 TMK0EG079 TMK0EG081 TEWF386 TMK0EG079 TMK0EG083 TEWF387 TEWF385 TEWB433 TEWB890...
  • Page 28 Parts Location NOTE: The numbers on the exploded view below refer to the exploded view section of the Replacement Parts List.
  • Page 29: Replacement Parts List

    Replacement Parts List Important Safety Notice Components Identified by mark have special characteristics important for safety. * When replacing any of these components, use only manufacturers specified parts. In case of ordering these spare parts, please always add the complete Model-Type number to your order. RTL (Retention Time Limited) Note: The marking (RTL) indicates that the Retention Time is Limited for this item.
  • Page 30 Cct Ref Parts Number Description Cct Ref Parts Number Description TQB0E2280I LITHUANIAN D4702 DA2J10100L DIODE TQB0E2280J PORTUGUESE D4704 DB2J30900L DIODE TQB0E2280K DANISH D4719 DA2J10100L DIODE TQB0E2280M BULGARIAN D4735 DA2J10100L DIODE TQB0E2280N ROMANIAN D4770 DA2J10100L DIODE TQB0E2280O LATVIAN D4785 DB2J30900L DIODE TQB0E2280P POLISH D5172...
  • Page 31 Cct Ref Parts Number Description Cct Ref Parts Number Description Q4972 B1ABKE000001 TRANSISTOR L8464 J0JHC0000045 COIL BLM18PG121SN1D Q4981 B1ABCE000015 TRANSISTOR L8466 J0JYC0000464 COIL Q5301 B1CFRD000100 TRANSISTOR L8467 J0JHC0000045 COIL BLM18PG121SN1D Q5302 B1CFRD000100 TRANSISTOR L8660 J0JBC0000115 FILTER Q9501 B1CFRL000021 TRANSISTOR L8662 J0JHC0000045 COIL BLM18PG121SN1D Q9502...
  • Page 32 Cct Ref Parts Number Description Cct Ref Parts Number Description R0955 D0GA272JA023 .063W 2K7 Ω R3167 D0GA333JA023 .063W 33K Ω R0956 D0GA332JA023 .063W 3K3 Ω R3168 D0GA333JA023 .063W 33K Ω R0957 D0GA332JA023 .063W 3K3 Ω R3171 D0GA101JA023 .063W 100 Ω 68 Ω...
  • Page 33 Cct Ref Parts Number Description Cct Ref Parts Number Description R4771 D0GA152JA023 .063W 1K5 Ω R5780 D0GAR00J0005 .063W 0 Ω R4772 D0GA152JA023 .063W 1K5 Ω R5782 D1BA2001A023 .063W 2K Ω R4774 D0GA473JA023 .063W 47K Ω R5783 D1BA1001A023 .063W 1K Ω 47K Ω...
  • Page 34 Cct Ref Parts Number Description Cct Ref Parts Number Description R8426 D0GA473JA023 .063W 47K Ω R8667 D1HY5604A012 .063W 56 Ω R8427 D0GA473JA023 .063W 47K Ω R8668 D1HY5604A012 .063W 56 Ω R8429 D0GA473JA023 .063W 47K Ω R8669 D0GA220JA023 .063W 22 Ω 10K Ω...
  • Page 35 Cct Ref Parts Number Description Cct Ref Parts Number Description R9530 D1BB3R30A055 0.1W 3.3 Ω C2000 F1G1A105A047 S.M.CAP 1000nF R9531 D0GD105JA052 .125W 1M Ω C2003 F1G1H1020008 S.M.CAP R9548 D0GD1R0JA035 .125W 1 Ω C2012 F1L0G1070001 S.M.CAP 100µF 4K7 Ω R9549 D0GA472JA023 .063W C2014 F1K1E106A134...
  • Page 36 Cct Ref Parts Number Description Cct Ref Parts Number Description C5000 F1G1A105A047 S.M.CAP 1000nF C6722 F1G1H101A834 S.M.CAP 100pF C5001 F1K1E106A134 S.M.CAP 10µF C6723 F1G1H330A834 S.M.CAP 33pF C5002 F1G1A105A047 S.M.CAP 1000nF C6724 F1G1H330A834 S.M.CAP 33pF C5004 F1G1A105A047 S.M.CAP 1000nF C6725 F1G1C104A077 S.M.CAP 100nF C5006...
  • Page 37 Cct Ref Parts Number Description Cct Ref Parts Number Description C8301 F1G1H9R0A831 S.M.CAP C8714 F1J1A106A087 S.M.CAP 10µF C8304 F1G1A105A047 S.M.CAP 1000nF C8715 F1J1A106A087 S.M.CAP 10µF C8305 F1G1A105A047 S.M.CAP 1000nF C8764 F1J1A475A039 S.M.CAP 4.7µF C8306 F1G1A105A047 S.M.CAP 1000nF C8765 F1J1A475A039 S.M.CAP 4.7µF C8307 F1G1A105A047...
  • Page 38 Cct Ref Parts Number Description Cct Ref Parts Number Description JK4703D K1FY119E0053 HDMI TERMINAL JK8450 K1FY104B0081 USB TERMINAL JK8451 K1FY104B0081 USB TERMINAL JK8452 K1FY104B0081 USB TERMINAL JK8600 K2LC1YYE0003 ETHERNET TERMINAL K1KA08A00506 8P CONNECTOR K1KY20BA0394 20P CONNECTOR K1KY16BA0394 16P CONNECTOR K1MN20BA0231 20P CONNECTOR LD3-CN10 TSCKZ0010055 LD FFC...
  • Page 39: Schematic Diagrams

    Schematic Diagrams IMPORTANT SAFETY NOTICE Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturers' specified parts. NOTE RESISTOR All resistors are carbon ¼W resistor, unless marked otherwise. Unit of resistance is OHM () (k=1,000, M=1,000,000) CAPACITORS All capacitors are ceramic 50V unless marked otherwise.
  • Page 62: Conductor Views

    Conductor Views A-BOARD TNPH0993 - TOP I C 9 9 8 0 R2712 CN0100 R0922 IC9980 R0923 C0074 TP8912 TP8915 TP8917 C N 0 1 0 0 C2701 C5408 TP8913 TP8914 TP8916 R8666 R5403 VJ5400 C2703 TP8671 C2702 C0068 C5410 C N 8 6 6 0 A 0 8 R8902...
  • Page 63 A-BOARD TNPH0993 - BOTTOM TP0911 TP0909 TP0907 TP0905 TP0903 TP0901 TP0900 TP0912 TP0908 TP0906 TP0904 TP0902 TP0910 TP8397 TP8665 TP8910 TP8911 TP8360 TP8362 TP8361 TP8668 TP8358 TP8662 TP8359 TP8404 TP8390 TP8388 TP8663 TP8667 TP8357 TP8392 TP8401 TP8356 TP8393 TP8355 TP8666 TP8396 TP8387 TP8664...
  • Page 64 LD - BOARD TNPA5691 - TOP C9587 C9571 Q 9 5 1 1 Q 9 5 1 0 Q 9 5 0 9 Q 9 5 0 8 Q 9 5 0 7 Q 9 5 0 6 L9518 Q 9 5 2 9 Q 9 5 2 7 R9604 Q9529...
  • Page 65 LP-BOARD TNPA5645 - TOP D2880 D2881 D2882 D2883 R2884 R2885 C2880 D2884 T N P A 56 4 5 1 L P S U F F I X . LP-BOARD TNPA5645 - BOTTOM LP10...
  • Page 66 K-BOARD TNPA5605 - TOP K-BOARD TNPA5605 - BOTTOM TP2802 TP2803 TP2807 D2804 R2808 R2801 D2811 D2810 D2808 R2807 C2809 R2802 C2806 C2808 C2803 D2803 R2805 TP2801 T N P A 5 6 0 5 TP2806 TP2808 TP2809 C2801 R2809 R2803 A D A B TP2800 D2806...

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