Panasonic TH-42LRG20E Service Manual
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Panasonic TH-42LRG20E Service Manual

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Service Manual
Specifications
Power Source:
Rated Power Consumption:
Stand-by Power Consumption: 0.25W (Without monitor out recording)
Aerial Impedance:
Receiving System:
Receiving Channels:
Colour LCD Television
220-240V AC, 50Hz
182W
13W (With monitor out recording)
75Ω unbalanced, Coaxial Type
LRG20B
PAL-I
PAL-525/60 (AV only)
DVB-T (Digital terrestrial services via UHF aerial input)
M.NTSC (AV only)
NTSC (AV only)
LRG20E
PAL-I/H, B/G, D/K
SECAM B/G, D/K, L/L'
PAL-525/60 (AV only)
DVB-T (Digital Terrestrial Services (MPEG2 and MPEG4-AVC(H.264))
DVB-C (Digital Cable Services) (MPEG2 and MPEG4-AVC(H.264))
M.NTSC (AV only)
NTSC (AV only)
LRG20B
UHF E21-E68
TH-42LRG20E
TH-42LRG20B
GLP25 Chassis
LRG20E
VHF E2-E12
VHF A-H (ITALY)
VHF R3-R5
UHF E21-E69
CATV S1-S10 (M1-M10)
CATV S21-S41 (Hyperband)
© Panasonic Corporation 2010.
Unauthorized copying and
distribution is a violation of law.
ORDER No. PCZ1006081CE
REVISION 2
VHF H1-H2 (ITALY)
VHF R1-R2
VHF R6-R12
CATV (S01-S05)
CATV S11-S20 (U1-U10)

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Summary of Contents for Panasonic TH-42LRG20E

  • Page 1 VHF E2-E12 VHF H1-H2 (ITALY) VHF A-H (ITALY) VHF R1-R2 VHF R3-R5 VHF R6-R12 UHF E21-E69 CATV (S01-S05) CATV S1-S10 (M1-M10) CATV S11-S20 (U1-U10) CATV S21-S41 (Hyperband) © Panasonic Corporation 2010. Unauthorized copying and distribution is a violation of law.
  • Page 2 Type A Connector HDMI2 :HDMI (Version 1.4 with Audio Return Channel) SD CARD slot ×1 CARD SLOT Common Interface slot ×1 (TH-42LRG20E Complies with CI+) HIGH-DENSITY D_SUB 15PIN R,G,B: 700mV p-p 75Ω HD,VD/TTL Level 2-5V p-p (high impedance) DIGITAL AUDIO OUT...

  • Page 3: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ................4 GENERAL GUIDE LINES..............4 TOUCH – CURRENT CHECK.............. 4 PREVENTION OF ELECTROSTATIC DISCHARGE (ESD) TO ELECTROSTATICALLY SENSITIVE (ES) DEVICES ......5 ABOUT LEAD FREE SOLDER (PBF)............6 SUGGESTED PB FREE SOLDER............6 APPLICABLE SIGNALS................7 SERVICE HINTS ..................

  • Page 4: 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 5: 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 6: 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 7: Applicable Signals

    Applicable Signals Component (Y, Pb, Pr), HDMI Signal name COMPONENT HDMI 525 (480) / 60i 525 (480) / 60p 625 (576) / 50i 625 (576) / 50p 750 (720) / 60p 750 (720) / 50p 1,125 (1,080) / 60i 1,125 (1,080) / 50i 1,125 (1,080) / 60p 1,125 (1,080) / 50p 1,125 (1,080) / 24p...

  • Page 8: Service Hints

    Service Hints How to remove the backcover Lay the main unit face down. (see Fig.5) Fig.5 Remove the 4 fixing screws and the pedestal assembly. (see Fig.6) SCREWS (XYN4+F12FJK) Fig.6 Remove the 16 fixing screws. (see Fig.7) SCREWS SCREWS Fig.7...

  • Page 9: Chassis Board Layout

    Chassis Board Layout P-BOARD A-BOARD V-BOARD Board Name Function AV Terminal, HDMI, Digital Audio Out, TV tuner, SD A-Board Card, DVB-T/C Dem, sLD, AV Switch, EEPROM, Flash Memory, Speaker out, Hotel RS232, Hotel IR P-Board Power Supply, Main Input V-Board Remote Receiver, Cats, R/G LED Location of Lead Wiring To find the Part Number of required wire in Replacement Parts List click on the wire name in red box.

  • Page 10: Technical Description

    Technical Description Specification of KEY for CI Plus, DTCP-IP and One-to-One General information: 1. EEPROM (IC8950) for spare parts has the seed of KEY for each. 2. The final KEY data will be generated by sLD IC (IC8001) when SELF CHECK was done and are stored in both sLD IC (IC8001) and EEPROM (IC8950).

  • Page 11: Setting Inspection

    Setting Inspection Voltage Confirmation A board Description Test point Voltage SUB1.8V TP5601 1.76V – 1.87V SUB1.2V TP5600 1.18V – 1.29V SUB3.3V TP5602 3.19V – 3.39V SUB5V TP5200 4.9V – 5.1V SUB9V TP5220 8.82V – 9.27V STB5V TP5400 4.9V – 5.1V P board Description Test point...

  • Page 12: 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. Panasonic 2010LCD 42FHD Self Check Complete TH-42LRG20E C860 O.K.

  • Page 13: 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 14: 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 TV unit, press on the remote control for 3 times within 2 seconds.

  • Page 15: Service

    SERVICE SERVICE Peaks SOFT 1.015 OPTION 1 Key Command ADJUST Peaks EEP 01.02.0027 OPTION 2 WB-ADJ LSI PACKAGE 0.030 OPTION 3 OPTION LSI DATA 1.00.05 OPTION 4 • SRV-TOOL STBY SOFT 1.00.00 Model ID Press the 3/4 button to change the adjustment values or function. STBY EEP 1.06.3602 03326100...

  • Page 16: 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 17: 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 18: 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 19: 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 20: Data Copy From Tv Set 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 21: Option Description

    Option Bytes Description OPTION1 ATP Search Speed Slow (1) / Fast (0) TXT Ch Refresh On (1) / Off (0) ID-1 On (1) / Off (0) Macrovision Auto-Judge On (1) / Off (0) Surround enable low bit (*1) On (1) / Off (0) Surround enable low bit (*1) On (1) / Off (0) Pre Emphasis...

  • Page 22: 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 CS-1000A equivalent) CA-210 or equivalent Comunication jig Computer for external control Procedure Remarks Let the panel standfor more than 3 hours at more than 20 °C.

  • Page 23: Wiring Diagram

    Wiring Diagram LCD PANEL...

  • Page 24: Block Diagrams

    SP_L SP_R Block (1/2) Diagram TU2901A JK8850 CN0100 TUNER SD CARD SLOT SERVICE A-BOARD V-BOARD 20 19 IIC2 (EXCHANGE UNIT) SN2500 RS232C_RXD IC3350 SUB5V SUB5V RS232 DRIVER RS232C_TXD STB3.3V STB3.3V D2500 G_LED G_LED Q2501 41,42 36,37 30,31 25,26 R_LED R_LED Q2500 IC2301 REMOTE/...
  • Page 25 Block (2/2) Diagram TO INVERTER TO INVERTER TO A09 MAIN IN...

  • Page 26: Parts Location

    Parts Location NOTE: The numbers on the exploded view below refer to the exploded view section of the Replacement Parts List. (UK) (CONTINENTAL)
  • Page 27 NOTE: The numbers on the exploded view below refer to the exploded view section of the Replacement Parts List. only „B“ model...

  • Page 28: Replacement Parts List

    TBL0E0107 PEDESTAL ASSY FIX IC800 C0DBBYY00019 IC FOR POWER SUPPLY TBL0E0124 STAND MTG ASSY IC801 C0DABYY00017 REGULATOR TBMA352 PANASONIC BADGE IC802 C0DAZYY00028 IC FOR POWER SUPPLY TKP0E16001 CONNECTOR COVER IC803 C0DAEMZ00007 IC FOR POWER SUPPLY TKP0E39001 AC CORD BRACKET IC804...
  • Page 29 Cct Ref Parts Number Description Cct Ref Parts Number Description PA5260 ERBSE5R00U FUSE D5200 B0ACCJ000048 DIODE D5400 B0ACCJ000048 DIODE DIODES D5401 B0ACCJ000048 DIODE D800 ERZV10V621T2 VARISTOR D5420 B0BC01700015 DIODE D801 B0HCMM000014 DIODE D5421 B0ACCJ000048 DIODE D803 B0JCPE000028 DIODE D5422 B0BC010A0007 DIODE D804 B0HCMM000014...
  • Page 30 Cct Ref Parts Number Description Cct Ref Parts Number Description L2754 J0JYC0000065 COIL FILTERS L2755 J0JYC0000065 COIL FL4800 EXC28CE201U FILTER L2756 J0JHC0000078 COIL FL4801 EXC28CE201U FILTER L2900 J0JCC0000278 CHIP INDUCTOR FL4802 EXC28CE201U FILTER L2901 J0JCC0000278 CHIP INDUCTOR FL4804 EXC28CE201U FILTER L2904 J0JCC0000278 CHIP INDUCTOR...
  • Page 31 Cct Ref Parts Number Description Cct Ref Parts Number Description R835 ERJ6GEYJ333 S.M.CARB 0.1W 33K Ω R0959 ERJ2GEJ220X .063W 22 Ω R837 ERJ12YJ514U 0.5W 510K Ω R0966 D0GA472JA015 .063W 4K7 Ω R838 ERJ12YJ514U 0.5W 510K Ω R0967 D0GA472JA015 .063W 4K7 Ω R839 ERJ6GEYJ623 S.M.CARB...
  • Page 32 Cct Ref Parts Number Description Cct Ref Parts Number Description R2321 ERJ8GEYJ3R3V 0.25W 3R3 Ω R3142 ERJ8ENF75R0 0.25W 75 Ω R2322 ERJ6GEY0R00 S.M.CARB 0.1W 0 Ω R3143 ERJ8ENF75R0 0.25W 75 Ω R2323 ERJ6GEY0R00 S.M.CARB 0.1W 0 Ω R3147 ERJ8ENF75R0 0.25W 75 Ω...
  • Page 33 Cct Ref Parts Number Description Cct Ref Parts Number Description R4554 ERJ2GEJ102X .063W 1K Ω R4993 ERJ2GEJ102X .063W 1K Ω R4556 ERJ2GEJ103X .063W 10K Ω R4994 ERJ2GEJ102X .063W 1K Ω R4557 D0GAR00Z0001 .063W 0 Ω R4999 D0GAR00Z0001 .063W 0 Ω R4560 D0GA473JA015 .063W...
  • Page 34 Cct Ref Parts Number Description Cct Ref Parts Number Description R5616 D0GB100JA041 0.1W 10 Ω R8413 D0GA680JA015 .063W 68 Ω R5617 D0GB100JA041 0.1W 10 Ω R8414 EXB28V151JX .031W 150 Ω R5618 D1BB3301A055 0.1W 3K3 Ω R8415 EXB28V104JX CHIP RES 100K Ω R5620 D1BB1001A055 0.1W...
  • Page 35 Cct Ref Parts Number Description Cct Ref Parts Number Description R8493 D0GA680JA015 .063W 68 Ω R8875 D0GA330JA015 .063W 33 Ω R8494 D0GA680JA015 .063W 68 Ω R8876 D0GA330JA015 .063W 33 Ω R8495 D0GA680JA015 .063W 68 Ω R8877 D0GA330JA015 .063W 33 Ω R8496 D0GA680JA015 .063W...
  • Page 36 Cct Ref Parts Number Description Cct Ref Parts Number Description C856 F2A1A102B297 ELECT 1000µF C2756 F1G1H102A730 S.M.CAP C857 F1J1H103A834 S.M.CAP 10nF C2757 F1G1H102A730 S.M.CAP C858 F1J1H105A830 S.M.CAP 1000nF C2761 F1G1C104A116 S.M.CAP 100nF C860 F2A1C1020112 ELECT 1000µF C2762 F1G1H102A730 S.M.CAP C862 F2A1E102B457 ELECT 1000µF...
  • Page 37 Cct Ref Parts Number Description Cct Ref Parts Number Description C3162 F1J1A106A043 S.M.CAP 10µF C5635 F1H1C105A145 S.M.CAP 1000nF C3163 F1J1A106A087 S.M.CAP 10µF C5641 F1K0J226A008 S.M.CAP 6.3V 22µF C3164 F1J1A106A087 S.M.CAP 10µF C5642 F1K0J226A008 S.M.CAP 6.3V 22µF C3165 F1J1A106A087 S.M.CAP 10µF C5643 F1K0J226A008 S.M.CAP...
  • Page 38 Cct Ref Parts Number Description Cct Ref Parts Number Description C8070 F1G1C104A116 S.M.CAP 100nF C8314 F1G1C104A116 S.M.CAP 100nF C8071 F1G1C104A116 S.M.CAP 100nF C8315 F1G1C104A116 S.M.CAP 100nF C8072 F1G1C104A116 S.M.CAP 100nF C8316 F1G1C104A116 S.M.CAP 100nF C8073 F1H0J1050013 CERAMIC 6.3V 1µF C8317 F1G1C104A116 S.M.CAP 100nF...
  • Page 39 Cct Ref Parts Number Description Cct Ref Parts Number Description P4-INV TXJP4SQWB-2 P4-INV WIRE K1KA08B00270 8P CONNECTOR RELAYS RL800 K6B1AYY00050 RELAY RL801 K6B1AYY00050 RELAY DIFFERENCES FOR MODEL TH--42LRG20B EXPLODED VIEW A-42LRG20B A P.C.B. TXASX01QXB-3 AC CORD TBM0E1709 CI SLOT COVER SHEET TBM0E2334 MODEL LABEL MISCELLANEOUS COMPONENTS...

  • Page 40: 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 (Ω) (k=1,000, M=1,000,000) CAPACITORS All capacitors are ceramic 50V unless marked otherwise.

  • Page 63: Conductor Views

    Conductor Views A-BOARD TNP8EA106 - TOP IC’S Q4512 IC1101 4B Q4513 IC2301 1B Q5000 IC3350 6B Q5240 IC5000 6C Q5600 IC5200 1A Q5601 IC5220 1A Q5605 IC5416 1A Q8400 IC8001 3D Q8401 IC8402 5C IC8921 4D DIODE’S D3300 TRAN’S Q2101...
  • Page 64 A-BOARD TNP8EA106 - BOTTOM IC’S Q2253 IC2950 Q2254 IC2952 Q2301 IC3000 Q2750 IC5600 Q2751 IC5601 Q2752 IC5603 Q3102 IC5604 Q3103 IC8300 Q3104 IC8302 Q3105 IC8400 Q4700 IC8401 Q4702 IC8950 Q5053 IC9980 Q5054 Q5055 TRAN’S Q5241 Q2252...
  • Page 65 P-BOARD TNP8EP103 - TOP IC’S D808 IC801 D814 IC802 D815 IC803 D816 IC804 D818 D819 TRAN’S D823 Q801 D824 Q804 D825 Q805 D827 D829 DIODE’S D830 D800 D834 D805 D837 D806 D841 D807...
  • Page 66 P-BOARD TNP8EP103 - BOTTOM IC’S D803 IC800 D804 D809 TRAN’S D810 Q800 D811 Q802 D812 Q803 D813 Q806 D821 Q807 D822 D826 DIODE’S D835 D801 D836...
  • Page 67 V-BOARD TNP8EV102 - TOP IC’S RM2500 1A TRAN’S Q2500 Q2501 Q2504 DIODE’S D2500...

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