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Panasonic TX-W28R4DP Service Manual
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Panasonic TX-W28R4DP Service Manual

Panasonic TX-W28R4DP Service Manual

Euro4 chassis
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TX-W28R4DP Service Manual
Safety
Specifications
Parts List
Service
Information
Adjustments
Self Check
Service Hints
Mechanical
View
Disassembly
Location of
Controls
Waveforms
All manuals and user guides at all-guides.com
Block Diagrams
Schematic Diagrams
PCB Views
Service Support
Service and repair of
this product is
supported by
Panasonic's LUCI
interface.
This interface provides a
link between the TV and
a standard PC to allow a
number of diagnostic
and control functions to
be performed.
For more details contact
your local Panasonic
company.
EXIT
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Summary of Contents for Panasonic TX-W28R4DP

  • Page 1 All manuals and user guides at all-guides.com TX-W28R4DP Service Manual Safety Service Support Specifications Service and repair of Block Diagrams this product is Parts List supported by Panasonic's LUCI Service interface. Information This interface provides a Adjustments link between the TV and...
  • Page 2 All manuals and user guides at all-guides.com Audio Control Dolby Power supply Video C - Schematic E - Schematic BACK H - Schematic K - Schematic M - Schematic P - Schematic C - PCB E - PCB Y - Schematic K - PCB M - PCB Y - PCB...
  • Page 3 Selectable Output (21 pin) the EURO4 Technical Guide. AV3 IN S-Video IN Y: 1V p-p 75Ω (4-pin) C: 0,3V p-p 75Ω Audio(RCAx2) 500mV rms10kΩ Video (RCAx1) 1V p-p 75Ω Panasonic CS ( U.K. ) Ltd. WILLOUGHBY ROAD, BRACKNELL, BERKS., RG12 8FT.

  • Page 4: Table Of Contents

    All manuals and user guides at all-guides.com CONTENTS SAFETY PRECAUTIONS................................2 SERVICE HINTS ..................................3 SERVICE POSITION.................................4 ADJUSTMENT PROCEDURE..............................5 ADJUSTMENT PROCEDURE AND SELF-CHECK ........................6 WAVEFORM PATTERN TABLE ...............................7 ALIGNMENT SETTINGS................................8 BLOCK DIAGRAMS ..................................9 PARTS LOCATION .................................14 REPLACEMENT PARTS LIST ..............................15 SCHEMATIC DIAGRAMS ...............................27 CONDUCTOR VIEWS................................32 SAFETY PRECAUTIONS GENERAL GUIDE LINES...

  • Page 5: Service Hints

    All manuals and user guides at all-guides.com SERVICE HINTS How to remove the rear cover Remove the 9 screws as shown in Fig.2. SCREWS Fig.2. LOCATION OF CONTROLS Y - Board P - Board Focus C - Board Screen K - Board H - Board E - Board M - Board...

  • Page 6: Service Position

    All manuals and user guides at all-guides.com HOW TO MOVE THE CHASSIS INTO SERVICE POSITION Remove the bead clamper from the mains lead and affix, using back cover screw, into top right-hand cabinet rib (A), shown in Fig.4. Hold and lift the rear of the E-PCB chassis and gently pull the chassis toward you, as shown in Fig.4. Release the respective wiring clips and rotate the chassis vertically through 90°, anti-clockwise.

  • Page 7: Adjustment Procedure

    All manuals and user guides at all-guides.com ADJUSTMENT PROCEDURE The remote control is used for entering and storing adjustments, with the exception of Cut-off adjustments, which must always be done prior to service adjustment. Perform adjustments in accordance with screen display. The display on the screen also specifies the software version as well as the approx.

  • Page 8: Adjustment Procedure And Self-Check

    All manuals and user guides at all-guides.com ADJUSTMENT PROCEDURE Item / Preparation Adjustments Set the +B voltage up as follows:- +B SET-UP Adjust R811 so that B2 shows 148V±1V. Receive a Greyscale signal. Confirm the following voltages. Set the controls :- ±...

  • Page 9: Waveform Pattern Table

    All manuals and user guides at all-guides.com WAVEFORM PATTERN TABLE Vert Drive Vert Out VFLB IC451 Pin 2 IC601 Pin 31 IC451 Pin 3 20mS 20mS 20mS H - Out H - Out H - Pulse IC601 Pin 50 IC701 Pin 5 Base Q503 64µS 64µS...

  • Page 10: Alignment Settings

    All manuals and user guides at all-guides.com ALIGNMENT SETTINGS (The figures below are nominal and used for representative purposes only.) Alignment Function Settings / Special features H-Pos Horizontal Position Optimum setting. V-Pos Vertical Position Optimum setting. H-Amp Horizontal Amplitude Optimum setting. V-Amp Vert.

  • Page 11: Block Diagrams

    All manuals and user guides at all-guides.com VIDEO BLOCK DIAGRAM Y - BOARD E - BOARD Q906 Q908 COILS Q905 Q907 Q909 IC601 Q104 61 V IN 1 Q950 Q951 TUNER IC351 SVM OUT 34 VIDEO PROCESSOR B OUT 39 Q353 Q305 Q306...
  • Page 12 All manuals and user guides at all-guides.com AUDIO BLOCK DIAGRAM M - BOARD E - BOARD TUNER IC2101 E16A M1 AUDIO IC251 PROCESSOR Q101 Q2102 DACM_R 24 AUDIO Q252 OUTPUT 47 ANA_IN1+ Q102 HEADPHONE Q2103 L 11 DACM_L 25 Q251 SC3_IN_L 37 21 DACA_R DACA_R...
  • Page 13 All manuals and user guides at all-guides.com DOLBY BLOCK DIAGRAM C - BOARD K - BOARD IC2704 Q2705 JK2702 Surround AUDIO Surround L Q2423 AMPLIFIER Centre Surround R Q2425 IC2703 Woofer Centre JK2402 AUDIO Q2426 Q2428 AMPLIFIER Woofer Q2703 Q2427 Q2704 IC2702 AUDIO...
  • Page 14 All manuals and user guides at all-guides.com CONTROL BLOCK DIAGRAM E - BOARD H - BOARD TUNER IC3401 VIDEO IC2101 SWITCHING AUDIO IC601 Q3401 SDA 1 PROCESSOR VIDEO PROCESSOR SCL 1 SERVICE / TEST SDA 1 SCL 1 M - BOARD SDA 2 M2 E17 SCL 2...
  • Page 15 All manuals and user guides at all-guides.com POWER SUPPLY BLOCK DIAGRAM C - BOARD R2714 Q2702 E - BOARD 5V SBY T2701 R2715 Q852 D2720 Q2701 D867 Q855 -18V D868 Q853 Q854 IC251 IC2702 IC2703 IC2704 AUDIO IC2701 AUDIO AUDIO AUDIO D862 OUTPUT...

  • Page 16: Parts Location

    All manuals and user guides at all-guides.com PARTS LOCATION NOTE: The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List.

  • Page 17: Replacement Parts List

    IC351 TDA6103Q-N3 R.G.B. OUTPUT ENG27506G TUNER IC451 LA7845N VERTICAL OUTPUT EUR511210 REMOTE CONTROL IC601 VDP3120BPPB1 VIDEO PRCESSOR TBM8E1728 PANASONIC BADGE IC701 TEA2031A E/W CORRECTION TBX8E049 POWER BUTTON IC801 STRF6654LF51 POWER SUPPLY THT1062 CRT FIXING SCREW IC850 SE140N ERROR AMPLIFER TKP8E1141...
  • Page 18 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description D456 MTZJT-775.6C DIODE D2402 MA165TA5 DIODE D457 MA165TA5 DIODE D2403 MTZJT-7712C DIODE D501 MA165TA5 DIODE D2404 MTZJT-7712C DIODE D502 1SR124-4AT82 DIODE D2405 MTZJT-7712C DIODE D511 MA4047...
  • Page 19 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description Q1104 BC847B TRANSISTOR L302 TLTACT4R7K COIL Q1105 BC847B TRANSISTOR L451 EXCELSA35T COIL Q1106 BC847B TRANSISTOR L501 EXCELSA35T COIL Q1107 BC847B TRANSISTOR L552 ELH5L6110 COIL Q1108 BC847B...
  • Page 20 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description C101 ERJ6GEY0R00 S.M.CARB 0.1W JA23 ERJ8GEY0R00 S.M.CARB .125W JA38 ERJ6GEY0R00 S.M.CARB 0.1W JA46 ERJ8GEY0R00 S.M.CARB .125W JA55 ERJ6GEY0R00 S.M.CARB 0.1W ERJ8GEY0R00 S.M.CARB .125W JA54 ERJ6GEY0R00 S.M.CARB...
  • Page 21 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R363 ERD25TJ103 CARBON 0.25W R650 ERJ6GEYJ750 S.M.CARB 0.1W R364 ERD25TJ103 CARBON 0.25W R651 ERJ6GEYJ750 S.M.CARB 0.1W R365 ERD25TJ103 CARBON 0.25W R652 ERJ6GEYJ102 S.M.CARB 0.1W R366 ERDS1TJ152...
  • Page 22 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R924 ERDS1FJ390 CARBON 0.5W R1167 ERJ6GEYJ100 S.M.CARB 0.1W R925 ERJ6GEY0R00 S.M.CARB 0.1W R1168 ERJ6GEYJ473 S.M.CARB 0.1W R926 ERJ6GEY0R00 S.M.CARB 0.1W R1169 ERJ6GEYJ472 S.M.CARB 0.1W R927 ERD25TJ471...
  • Page 23 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description R2429 ERJ6GEYJ101 S.M.CARB 0.1W R2530 ERJ6GEYJ473 S.M.CARB 0.1W R2430 ERJ6GEYJ101 S.M.CARB 0.1W R2531 ERJ6GEYJ103 S.M.CARB 0.1W R2431 ERJ6GEYJ471 S.M.CARB 0.1W R2532 ERJ6GEYJ103 S.M.CARB 0.1W R2432 ERJ6GEYJ471...
  • Page 24 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description 100nF R3020 ERJ6GEYJ153 S.M.CARB 0.1W C103 ECJ2VF1H104Z ELECT 350V 56pF R3021 ERJ6GEYJ750 S.M.CARB 0.1W C106 ECUV1H560JCX S.M. CAP 100nF R3022 ERJ6GEYJ102 S.M.CARB 0.1W C107 ECJ2VF1H104Z ELECT...
  • Page 25 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description 27nF C556 ECQF4273JZH FILM 400V C814 ECKC3D102J CERAMIC 470pF 470pF C557 ECKC2H471J CERAMIC 500V C815 ECKC1H471J CERAMIC 470µF 82pF C558 ECA1HHG471E ELECT C816 EEUFB1E820B CERAMIC 820nF...
  • Page 26 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description 27pF 10µF C1129 ECUV1H270JCX S.M. CAP C2429 ECA1CM100GB ELECT C2101 ECUV1H102JCX S.M. CAP C2430 ECUV1H010CCX S.M. CAP C2102 ECUV1H102JCX S.M. CAP C2431 ECUV1H010CCX S.M.
  • Page 27 All manuals and user guides at all-guides.com Cct Ref Parts Number Description Cct Ref Parts Number Description 100pF 10nF C2734 ECUV1H101JCX S.M. CAP C3213 ECUV1H103KBX S.M. CAP 33µF 100nF C2735 ECA1HM330B ELECT C3214 ECJ2VB1C104K ELECT 350V 10nF 10nF C2736 ECJ2VF1H103Z ELECT 350V C3215...
  • Page 28 All manuals and user guides at all-guides.com NOTES...

  • Page 29: Schematic Diagrams

    All manuals and user guides at all-guides.com SCHEMATIC DIAGRAMS FOR MODEL TX-W28R4DP (EURO-4 CHASSIS) IMPORTANT SAFETY NOTICE Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturer's specified parts. NOTE RESISTOR All resistors are carbon ¼W resistor, unless marked otherwise.
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  • Page 37: Conductor Views

    All manuals and user guides at all-guides.com CONDUCTOR VIEWS E - BOARD TNP8EE009 TRAN’S DIODES D558 Q3601 L8 D3103 B7 D557 Q3007 M9 D3101 B7 D556 Q3001 N8 D3102 B7 D555 Q3006 N10 D2161 G9 D554 Q2304 I7 D2105 G10 D553 Q2303 M6 D2104 F9...
  • Page 38 All manuals and user guides at all-guides.com Y - BOARD TNP8EY012 TRANSISTORS Q909 Q908 Q907 Q906 Q905 Q354 Q353 Q352 Q351 DIODES D906 D905 D904 D902 D901 D364 D363 D362 D361 D360 D359 D358 D357 D356 D355 D354 TEST POINTS TPY6 B8 TPY5 D5 TPY4 E5...
  • Page 39 All manuals and user guides at all-guides.com K - BOARD TNP8EK005 TRAN’S Q2432 Q2431 Q2430 Q2429 Q2428 Q2427 Q2426 Q2425 Q2424 Q2423 Q2422 Q2421 Q2420 Q2419 Q2418 Q2417 Q2416 Q2410 Q2409 Q2407 Q2406 Q2405 Q2404 Q2403 Q2402 Q2401 IC’S IC2404 IC2403 IC2402 IC2401...
  • Page 40 All manuals and user guides at all-guides.com C - BOARD TNP8EC003 TRAN’S Q2706 G10 Q2705 H6 Q2704 G7 Q2703 G9 Q2702 F9 Q2701 F9 DIODES D2720 E6 D2719 H10 D2718 G10 D2717 F3 D2716 F2 D2715 F6 D2714 F5 D2713 F8 D2712 F8 D2711 E7 D2710 C8...
  • Page 41 All manuals and user guides at all-guides.com M - BOARD TNP8EM013 TRANSISTORS Q1061 Q1062 Q3201 Q3202 Q3203 Q3204 Q3205 Q3206 Q3207 Q3208 Q3209 DIODES D1061 D3201 D3202 D3203 IC’S IC1601...
  • Page 42 All manuals and user guides at all-guides.com NOTES...

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