Panasonic tx-p42u20b Service Manual
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Panasonic tx-p42u20b Service Manual

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Service Manual
Plasma Television
TX-P42U20B
Model No.
TX-P42U20E
TX-PR42U20
GPF13DE Chassis
IMPORTANT SAFETY NOTICE
Panasonic

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Summary of Contents for Panasonic tx-p42u20b

  • Page 1 Service Manual Plasma Television TX-P42U20B Model No. TX-P42U20E TX-PR42U20 GPF13DE Chassis WARNING IMPORTANT SAFETY NOTICE Panasonic...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1 Safety Precautions---------- 12 Wiring Connection Diagram 2 W arning--------------------------- 13 Schematic Diagram 3 Service Navigation--------------------------------------------------- 6 4 Specifications--------------------------------------------------------- 8 5 Technical Descriptions----------------------------------- 6 Service Mode---------------------------------------------------------- 11 7 Troubleshooting Guide--------------------------------------------18 8 Service Fixture & Tools------------------------------------------ 23 9 Disassembly and Assembly Instructions-----------------24 14 Printed Circuit Board 15 Exploded View and Replacement Parts List 10 Measurements and Adjustments...

  • Page 3: Safety Precautions

    1 Safety Precautions 1.1. General Guidelines 1.2. Touch-Current Check Note: Measuring network for TOUCH CURRENTS _ L Cs= 0.22| 1 - ------ 500Q = 0.022|jF...

  • Page 4: Warning

    Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices Caution...
  • Page 5 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). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

  • Page 6: Service Navigation

    3 Service Navigation 3.1. PCB Layout...

  • Page 7: Applicable Signals

    3.2. Applicable signals COMPONENT (Y, PB, PR), HDMI PC (from HDMI terminal) Note...

  • Page 8: Specifications

    4 Specifications Pow er Source Pow er Consum ption Pow er Consum ption in Standby mode Display panel Aspect Ratio Visible screen size Num ber o f pixels Sound Speaker Audio Output Headphones Receiving System s / Band nam e (B) PAL I PAL 525/60 DVB -T...
  • Page 9 Card slot Output AUDIO L - R DIGITAL A UDIO OUT Dim ensions (W Mass Note...

  • Page 10: Technical Descriptions

    5 Technical Descriptions 5.1. Specification of KEY for CI Plus, DTCP-IP and One-to-One 5.1.1. General information: 5.1.2. Replacement of ICs: 5.1.3. Model and Keys:...

  • Page 11: Service Mode

    6 Service Mode 6.1. How to enter into Service Mode * * * * * * * * * * * * * " a d j u s t * * * * * * * * * * * * * * * * * * * * * * * * * * * 6.1.1.
  • Page 12 6.1.2. Contents of adjustment mode 6.1.3. How to exit...
  • Page 13 6.2. Option - Mirror 6.3. Service tool mode 6.3.1. How to access 6.3.2. Display of SOS History 6.3.3. POWER ON Time, On/Off 6.3.4. Exit...

  • Page 14: Hotel Mode

    6.4. Hotel mode (within 2 second)

  • Page 15: Data Copy By Sd Card

    6.5. Data Copy by SD Card 6.5.1. Purpose (a) Board replacement (Copy the data when exchanging A-board): (b) Hotel (Copy the data when installing a number of units in hotel or any facility): 6.5.2. Preparation File name: Note:...
  • Page 16 6.5.3. Data copy from TV set to SD Card Note:...
  • Page 17 6.5.4. Data copy from to SD Card to TV set Note:...

  • Page 18: Troubleshooting Guide

    7 Troubleshooting Guide 7.1. Check of the IIC bus lines 7.1.1. How to access 7.1.1.1. Self-check indication only: 7.1.1.2. Self-check indication and forced to factory shipment setting: 7.1.2. Screen display * * * * * * * * 7.1.3. Check Point 7.1.4.
  • Page 19 7.2. Power LED Blinking timing chart...
  • Page 20 7.3. No Power...
  • Page 21 7.4. No Picture...
  • Page 22 7.5. Local screen failure...

  • Page 23: Service Fixture & Tools

    8 Service Fixture & Tools 8.1. SC jig Purpose: SC jig: Part number: How to use: Caution: Remove SC jig from SC board after inspection.

  • Page 24: Disassembly And Assembly Instructions

    9 Disassembly and Assembly Instructions 9.1. Remove the Rear cover 9.4. Remove Side terminal cover and the Side shield metal 9.2. Remove the AC inlet Caution: 9.3. Remove the P-Board Caution:...
  • Page 25 9.5. Remove the Tuner unit 9.7. Remove the Speakers 9.8. Remove the SM-Board 9.6. Remove the A-Board...
  • Page 26 9.9. Remove the SC-Board 9.11. Remove the SS-Board 9.12. Remove the Hanger metals and 9.10. Remove the SS2-Board the Stand brackets...
  • Page 27 9.15. Remove the S-Board 9.13. Remove the C1-Board < = » ■ 9.14. Remove the C2-Board < = » ■...

  • Page 28: Replace The Plasma Panel

    9.16. Remove the Plasma panel sec­ tion from the Cabinet assy (glass) 9.18. Remove the K-Board 9.19. Replace the plasma panel Caution: A new plasma panel itself without Hanger metals is fragile. To avoid the damage to new plasma panel, carry a new plasma panel taking hold of the Hanger metals after assembling the Hanger metals and the Stand brackets.

  • Page 29: Measurements And Adjustments

    10 Measurements and Adjustments 10.1. Adjustment 10.1.1. Vsus selection Caution: Procedure...
  • Page 30 10.1.2. Sub-Contrast adjustment Ref.: RF signal m odulation spec. Note: B models: 80% O ther models: 90% Note: Sub-contrast adjustm ent is unadjusted for AV/ HD input. But, when needing the adjustm ent cho­ sen manually, please refer to [ alterna­ tive m ethod ].
  • Page 31 A nother procedure A nother procedure...
  • Page 32 10.1.3. White balance adjustment...

  • Page 33: Block Diagram

    11 Block Diagram 11.1. Main Block Diagram...
  • Page 34 11.2. Block (1/4) Diagram...
  • Page 35 11.3. Block (2/4) Diagram...
  • Page 36 11.4. Block (3/4) Diagram...
  • Page 37 11.5. Block (4/4) Diagram s c a n d r i v e...

  • Page 39: Wiring Connection Diagram

    12 Wiring Connection Diagram 12.1. Caution statement. Caution: 12.2. Wiring (1)
  • Page 40 12.3. Wiring (2)

  • Page 41: Schematic Diagram

    13 Schematic Diagram 13.1. Schematic Diagram Note Notes: Resistor Capacitor ( / )
  • Page 42 Remarks:...
  • Page 43 13.2. P-Board (1/4) Schematic Diagram...
  • Page 44 13.3. P-Board (2/4) Schematic Diagram...
  • Page 45 13.4. P-Board (3/4) Schematic Diagram...
  • Page 46 13.5. P-Board (4/4) Schematic Diagram...
  • Page 47 13.6. A-Board (1/19) Schematic Diagram...
  • Page 48 1 1 ....h h o h h i ' m - - m - ' m - - m - - m - i l l Q l l Q l l Q l l Q l l i BBBBBBBBBBBBBBBIIIBBBBBBBBBBBBB illllllBIIIIlBllllliilllllilill Б...
  • Page 49 Т 0 п61 Щ U .1 s S riU if i Ш а a ■^r t p . П, 4 4 6 6 6 4 4 4 4 4 6 6 4 4 4 S s s !§ § § § § § § § § § § § § § § § § § § § § § § Ш...
  • Page 50 13.9. A-Board (4/19) Schematic Diagram xecsi О R 8 6 2 1 -------- О -----4 О 3 О A -------- 0 ^ —1 xecs...
  • Page 51 13.10. A-Board (5/19) Schematic Diagram...
  • Page 52 13.11. А -Board (6/19) Schematic Diagram...
  • Page 53 . _ . ¥ к . . . j T 0 17/19 “ " I I T O 3 ,17/19 l > T O 17/19 J T O 3/19 .O N T O 12/19 T O 3/19 T O 14/19 T O 17/19 T O 3 /19 T O 3 ,12/19...
  • Page 54 13.12. А -Board (7/19) Schematic Diagram...
  • Page 56 13.13. А -Board (8/19) Schematic Diagram...
  • Page 58 13.14. A-Board (9/19) Schematic Diagram Y . Y...
  • Page 59 13.15. А -Board (10/19) Schematic Diagram 11/19 9/19 9/19 E _ A V 1 _ G N D (A U D IO )(_ 4F 9/1 9 E _A V 1_R IN (_2P IN yA _A V 2_R _ 9/1 9 E _A V 2 _L I N (_ в...
  • Page 61 13.16. A-Board (11/19) Schematic Diagram...
  • Page 62 13.17. А -Board (12/19) Schematic Diagram S U B * R S 1 1 K...
  • Page 63 F E _ V irtual_M odule...
  • Page 64 13.18. A-Board (13/19) Schematic Diagram...
  • Page 65 13.19. A-Board (14/19) Schematic Diagram...
  • Page 66 13.20. A-Board (15/19) Schematic Diagram J ®...
  • Page 67 13.21. А -Board (16/19) Schematic Diagram P E A K S -A V C P O W E R A -B O A R D (1 6 /1 9 )
  • Page 69 13.22. A-Board (17/19), K-Board and S-Board Schematic Diagram r ::;...
  • Page 70 13.23. А -Board (18/19) Schematic Diagram A -B O A R D (1 8 /1 9 ) P E A K S -C O M M O N...
  • Page 72 13.24. A-Board (19/19) Schematic Diagram...
  • Page 73 13.25. C1-Board (1/2) Schematic Diagram...
  • Page 74 13.26. C1-Board (2/2) Schematic Diagram...
  • Page 75 13.27. C2-Board (1/2) Schematic Diagram...
  • Page 76 13.28. C2-Board (2/2) Schematic Diagram 2—® © “ б IX X Г Г ■ ^ 1 / / / "I Ж...
  • Page 77 13.29. SC-Board (1/4) Schematic Diagram...
  • Page 78 13.30. SC-Board (2/4) Schematic Diagram...
  • Page 79 13.31. SC-Board (3/4) Schematic Diagram...
  • Page 80 13.32. SC-Board (4/4) Schematic Diagram...
  • Page 81 13.33. SS-Board (1/2) Schematic Diagram...
  • Page 82 13.34. SS-Board (2/2) and SS2-Board Schematic Diagram 1 1 1 1 X...

  • Page 83: Printed Circuit Board

    14 Printed Circuit Board 14.1. P-Board P-BOARD (FOIL SIDE) LSEP1287BEHB...
  • Page 84 Parts Location P -B O A R D (F O IL S ID E ) T R A N S IS T O R V O L U M E T E S T P O IN T...
  • Page 85 P a rts L o c a tio n P -B O A R D (C O M P O N E N T S ID E ) T R A N S IS T O R V O L U M E T E S T P O IN T...
  • Page 86 P-BOARD (COMPONENT SIDE) LSEP1287BEHB...
  • Page 87 14.2. K, S and SS2-Board SS2-BOARD (FOIL SIDE) K-BOARD (FOIL SIDE) S-BOARD (FOIL SIDE) TNPA4802 TXN/K1LUUE TNPA4858AB о о О d lS S lH P F ..О S E E R E V E R S E F O R O R D E R NO. C E O ) SS2-BOARD (COMPONENT SIDE) K-BOARD (COMPONENT SIDE)
  • Page 88 14.3. A-Board...
  • Page 89 A-BOARD (COMPONENT SIDE) A-P42U20B A-P42U20E A-PR42U20...
  • Page 90 14.4. C1-Board Го Л C1-BOARD (FOIL SIDE) TNPA5094 C1-BOARD (COMPONENT SIDE) TNPA5094...
  • Page 91 14.5. C2-Board C2-BOARD (FOIL SIDE) TNPA5095 C2-BOARD (COMPONENT SIDE) TNPA5095...
  • Page 92 14.6. SC-Board SC-BOARD (FOIL SIDE) TXNSC11DEK...
  • Page 93 SC-BOARD (COMPONENT SIDE) TXNSC11DEK...
  • Page 94 14.7. SS-Board SS-BOARD (FOIL SIDE) TXNSS11DEK...
  • Page 95 SS-BOARD (COMPONENT SIDE) TXNSS11DEK...

  • Page 97: Exploded View And Replacement Parts List

    15 Exploded View and Replacement Parts List 15.1. Exploded View and Mechanical Replacement Parts List 15.1.1. Exploded View 1...
  • Page 98 15.1.2. Exploded View 2...
  • Page 100 15.1.4. Packing 2...
  • Page 101 15.1.5. Mechanical Replacement Parts List...
  • Page 102 TBLA3 685 STAND POLE R 1 PAVCCZ TBLA3 68 6 STAND POLE L 1 PAVCCZ TBLX0160 PEDESTAL STAND(ROUND GB) 1 PAVCCZ TBM3EA002 PANASONIC SHEET BADGE 1 PAVCCZ TBX3EA00101 POWER BUTTON THEJ033 9 SCREW(BC-TUNER:1 SIDE COVER:2) THEL0429 SCREW THEL052Z SCREW (BC TOP:4)
  • Page 103 Re f . | Safety Part No. Part Name & Description Q ’ty Remarks TPD0E2131 BOTTOM CUSHION 1 PAVCCZ TPD0E2139 PEDESTAL CUSHION 1 PAVCCZ TPDX0016-1 JOINT FOR PEDESTAL TPE0E4047 SET BAG 1 PAVCCZ TPE0E9002 ACCESSORIES BAG 1 PAVCCZ TPE0E9003 BAG FOR AC CORD 1 PAVCCZ TPEB336 BAG (STAND POLE R)
  • Page 104 R e f . Safety Part No. Part Name & Description Q ’ty Remarks TTU0E0750 REAR COVER 1 PAVCCZ R д & TTU0E0753 REAR COVER 1 PAVCCZ B TUX0E152 42HANGER METAL 2 PAVCCZ TXFEA01LWUE SPEAKER ASSY 2 PAVCCZ TXFKP01LGUE SIDE TERMINAL COVER ASSY 1 PAVCCZ TXFKY01LUUE CABINET ASSY...
  • Page 105 15.2. Electrical Replacement Parts List 15.2.1. Replacement Parts List Notes RTL (Retention Time Limited) Note:...

  • Page 106: Electrical Replacement Parts List

    15.2.2. Electrical Replacement Parts List Note: Safety Ref. No. Part No. Part Name & Pcs Remarks Description Safety Ref. No. Part No. Part Name & Pcs Remarks C2324 F1J1E105A231 C 1 UF 25V Description C2325 F1G1H102A730 C 1000UF, 50V C2334 F1J1H474A757 C 0.47UF, 50V LSEP1287BEHB...
  • Page 107 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C3019 F1G1C104A116 C 0.10UF, K, 16V C3161 F1J1A106A087 C 0.010UF, K, C3020 ECJ1VB1A105K C 0.01UF, Z, 10V C3162 F1J1A106A087 C 0.010UF, K, C3021...
  • Page 108 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C5632 F1J1A475A087 C 4.7UF, K, 10V C8076 F1G1C104A116 C 0.10UF, K, 16V C5633 F1H1C104A143 C 0.1UF, K, 16V C8077 F1G1E103A123 C 0.010UF, K,...
  • Page 109 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C8414 F1G1E103A123 C 0.010UF, K, C9374 F1G1C104A116 C 0.10UF, K, 16V C9375 F1G1C104A116 C 0.10UF, K, 16V C8415 F1G1C104A116 C 0.10UF, K, 16V C9380...
  • Page 110 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description D9804 B0JCPG000030 DIODE L3116 J0JYC0000331 CHIP INDUCTOR PAVCCZ D9805 B0JCPG000030 DIODE L3117 J0JYC0000331 CHIP INDUCTOR PAVCCZ D9806 B0ADCJ000100 DIODE L3118 J0JYC0000331...
  • Page 111 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description Q2511 DSC200100L TRANSIST0R R0985 D0GA472JA015 M 4.7K0HM, J,0.063W Q2512 DSC200100L TRANSIST0R R1179 D1BB7151A055 M7.15K0HM, 1/10W Q3100 B1AAFB000002 TRANSIST0R PAVCCZ R1180 ERJ2GEJ102X...
  • Page 112 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R2310 D0GA222JA015 M 2.2K0HM, R3138 ERJ6ENF1500 M 150 0HM, 1/10W J,0.063W R3139 ERJ6ENF1500 M 150 0HM, 1/10W R2318 ERJ8GEYJ3R3V M 3.3 0HM, J,1/ R3140 ERJ6ENF1500...
  • Page 113 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R3205 D1BA1302A014 M 13K0HM, 0.063W PAVCCZ R4717 D0GA473JA015 M 47K0HM, J,0.063W R3206 D1BA1302A014 M 13K0HM, 0.063W PAVCCZ R4721 ERJ2GEJ103 M 10K0HM, R3207...
  • Page 114 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R5481 ERJ2GEJ221 M 220 0HM, R8017 D0GA471JA015 M 4700HM, J,0.063W J,0.063W R5485 ERJ6GEYJ104V M 100K0HM,J,1/ R8031 D0GA222JA015 M 2.2K0HM, J,0.063W R5486 ERJ6GEYJ102V M 1K 0HM J 1/10W...
  • Page 115 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R8436 D0GA223JA015 M 22K 0HM J R8497 D0GA680JA015 M 68 0HM, 0 .063W J,0.063W R8437 D0GA223JA015 M 22K 0HM J R8498 D0GA680JA015 M 68 0HM,...
  • Page 116 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R8861 D0GA680JA015 M 68 0HM, R9145 D0GA101JA015 M 100 0HM, J,0.063W J,0.063W R8862 D0GA680JA015 M 68 0HM, R9190 D0GA101JA015 M 100 0HM, J,0.063W...
  • Page 117 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description TU2901A ENG37F03KF TUNER PAVCCZ C16491 F1L2J1020001 C 1000UF, K,6.3V C16501 F1K1E105A029 C 1UF, Z, 25V C16502 F1K1E475A134 C 4.7UF, Z, 25V X8000 H0J245500101 CRYSTAL...
  • Page 118 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C16864 F1J1H104A835 C 0.10UF, 50V D16281 DZ2J051M0L ZENER DIODE C16891 F1K1E105A029 C 1UF, Z, 25V D16282 DZ2J068M0L ZENER DIODE PAVCCZ C16902 F1E2J332A002...
  • Page 119 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description D16791 DZ2J200M0L ZENER DIODE D16792 B0ACCJ000048 DIODE Q16001 B1JBEN000002 TRANSISTOR PAVCCZ D16820 B0ACCJ000048 DIODE Q16002 B1JBEN000002 TRANSISTOR PAVCCZ D16821 DZ2J330M0L ZENER DIODE...
  • Page 120 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R16023 D0GF7R5JA047 M 7.5 OHM,J, R16288 D0GF334JA047 0.33W 330KOHM,F,0.33W R16031 ERJ6ENF8202 M 82KOHM, 1/10W R16289 D0GF334JA047 330KOHM,F,0.33W R16032 ERJ6ENF8202 M 82KOHM, 1/10W R16290...
  • Page 121 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R16521 ERJ6GEYJ101V M 100 OHM,J,1/ R16659 ERJ6GEY0R00V M 0 OHM J 1/10W R16660 ERJ6GEYJ222V M 2.2K OHM J 1/ R16522 ERJ6GEYJ101V M 100 OHM,J,1/ R16661...
  • Page 122 м о т / т ' г ' и н о о о т и т ^ о ч г г т о т а э о а е ^ т г .т н /Т Г WHO HZ.** И л г г .^ г л я о 9 г н я 8S69TH MS*0 и...
  • Page 123 £ U 00£D лодг 'лпогг T£TVTZzava^ M O T T Aog 'н 'лаооот о нготнталтгэа ZTZO /т'г'ино оот и TfrovrTOiasoa ttZLTd Л П Z'Z D бо^дггатгтл TTZO мот Л05 '.UlZ.fr 3 iSOOOLfrHTV^ OTZD /т'г'ино оот и TfrovrTOiasoa £bZLTd Аодг 'лпогг э T£Tviz^va^ 60ZD мот...
  • Page 124 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C301 ECKD3A101KBP C 100PF, K, 1KV C302 F1BAF221A131 C 220UF, 250V D100 B0FBAT000006 DIODE C314 ECWH8333HA P 0.033PF, J, D102 B0ACDD000001 DIODE...
  • Page 125 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R119 D0GB103JA057 M 10K OHM J 1/ L100 G0B103J00003 CHOKE COIL R121 ERJ3GEYJ333 M 33KOHM,J,1/16W L101 G0B103J00003 CHOKE COIL R122 ERX12SJ4R7 M 4.7 OHM, J,1/...
  • Page 126 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R414 D0GB105JA057 M 1M OHM F 1/10W R663 ERJ3GEYJ104 M 100KOHM,J,1/ R415 ERJ6GEYJ103V M 10K OHM J 1/ R700 D 0GD4 R7JA059 R416...
  • Page 127 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R784 ERJ6ENF3303 M 330KOHM, 1/10W R950 ERJ6ENF4702 M 47KOHM, 1/10W R785 ERJ6GEYJ102V M 1K OHM J 1/10W R786 ERJ6GEYJ104V M 100KOHM,J,1/ RL101 K6B1AYY00057...

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