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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 a standard PC to allow a...
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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 BACK BACK...
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 It is advisable to insert an isolation transformer in the Reverse the AC plug at the outlet and repeat each of AC supply before servicing a hot chassis.
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 Fig.3.
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.
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. setting values. The adjustment sequence for the service mode is indicated below.
ADJUSTMENT PROCEDURE Item / Preparation Adjustments +B SET-UP Set the +B voltage up as follows:- Adjust R811 so that B2 shows 148V±1V. Receive a Greyscale signal. Confirm the following voltages. Set the controls :- ± 0,25V ± 0,25V Brightness Minimum 12 ±...
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 64µS HFLB HFLB Video Out...
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. Amplitude Optimum setting. E/W-Amp1 EW-amplitude Optimum setting.
VIDEO BLOCK DIAGRAM Y - BOARD E - BOARD Q906 Q908 COILS Q905 Q907 Q909 IC601 61 V IN 1 Q950 Q951 TUNER Q104 IC351 SVM OUT 34 VIDEO PROCESSOR B OUT 39 Q353 Q305 Q306 43 B IN Q105 OUTPUT 42 G IN G OUT 38...
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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 C107 ECJ2VF1H104Z ELECT 350V R3022 ERJ6GEYJ102 S.M.CARB 0.1W 10µF R3023 ERJ6GEYJ123 S.M.CARB 0.1W C108...
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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 100nF C559 ECWF2824JBB FILM 200V C817 ECQE6104K...
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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. CAP 100pF C2103 ECUV1H102JCX S.M. CAP C2432 ECUV1H101JCX S.M.
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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 ECUV1H103KBX S.M. CAP 33pF C2737 ECA1VM102GB ELECT...
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.