Panasonic TX-W28R4F Service Manual
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Panasonic TX-W28R4F Service Manual

Panasonic TX-W28R4F Service Manual

Euro4 chassis
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TX-W28R4F Service Manual
Safety
Specifications
Parts List
Service
Information
Adjustments
Self Check
Service Hints
Mechanical
View
Disassembly
Location of
Controls
Waveforms
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
BACK

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Summary of Contents for Panasonic TX-W28R4F

  • Page 1 TX-W28R4F 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...
  • Page 2 Audio Control Power supply Video BACK E - PCB M - PCB E - Schematic H - Schematic Y - PCB M - Schematic Y - Schematic BACK BACK...

  • Page 3: Colour Television

    ORDER No. SM-98039 Colour Television TX-W28R4F EURO4 Chassis SPECIFICATIONS TECHNISCHE DATEN Power Source: 220-240V AC, 50Hz Netzpannung: 220-240V AC, 50Hz Power Consumption: 105W Leistungsaufnahme: 105W Aerial Impedance: 75 unbalanced, Coaxial Type Antennenimpedanz: 75 asymmetrisch, Koaxial-Typ Standby Power Consumption: 1,8W Standby Leistungsaufnahme:...

  • Page 4: Table Of Contents

    CONTENTS INHALT SAFETY PRECAUTIONS ............ 2 SICHERHEITSVORKEHRUNGEN ........2 SERVICE HINTS ..............4 SERVICE HINWEISE ............4 SERVICE MODE ..............5 ABGLEICHVERFAHREN............. 6 SELF CHECK ..............7 SELBSTDIAGNOSE ............7 ADJUSTMENT PROCEDURE ..........8 ABGLEICH ................8 WAVEFORM PATTERN TABLE .......... 9 SIGNAL TABELLE...............
  • Page 5 LEAKAGE CURRENT HOT CHECK MESSUNG DES KRIECHSTROMS IM EINGESCHALTETEN ZUSTAND Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check. Den Netzstecker direkt in eine Netsteckdose stecken. Connect a 2k 10W resistor in series with an Für diese Messung keinen Trenntransformator exposed metallic part on the receiver and an earth, verwenden.

  • Page 6: Service Hints

    SERVICE HINTS SERVICE HINWEISE HOW TO REMOVE THE REAR COVER ENTFERNEN DER GERÄTERÜCKWAND Remove the 11 screws as shown in Fig.2. Die 11 Schrauben entfernen, siehe Abb.2. Screws Schrauben Fig.2. Abb.2. LOCATION OF CONTROLS LAGE DER EINSTELLREGLER Y- Board Focus Fokusregler M-Board H- Board...

  • Page 7: Service Mode

    SERVICE MODE 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 CCU variants as well as the approx. setting values. The adjustment sequence for the service mode is indicated below.

  • Page 8: Abgleichverfahren

    ABGLEICHVERFAHREN Die Fernbedienung dient zum Eingeben und Abspeichern der Einstellwerte, mit Ausnahme der Sperrpunkteinstellung, die grundsätzlich vor den hier beschriebenen Einstellungen vorgenommen werden muss. Die Einstellungen erfolgen entsprechend dem Bildschirm-Display. Auf dem Bildschirm-Display erscheinen die ungefähren Einstellwerte. Die Einstellfolge für den Service-Modus ist nachstehend beschrieben. Um in den Service-Mode zu gelangen, gehen sie Die einzelnen Funktionen mit Hilfe der ROTEN und GRÜNEN Taste anwählen.

  • Page 9: Self Check

    SELF CHECK SELBSTDIAGNOSE Self-check is used to automatically check the bus Die Selbstdiagnose dient zum automatischen Prüfen lines and hexadecimal code of the TV set. der Bus-Leitungen sowie des Hexadezimalcodes des FS-Geräts. Zum Umschalten auf Selbstdiagnose To get into the Self-Check mode press the down zunächst die Taste "STATUS"...

  • Page 10: Adjustment Procedure

    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 B10 5 ± 0,25V Brightness Minimum ± 0,5V B11 33 ±...

  • Page 11: Waveform Pattern Table

    WAVEFORM PATTERN TABLE SIGNAL TABELLE Vert Drive VFLB Vert Out IC451 Pin 2 IC451 Pin 3 IC601 Pin 31 20mS 20mS 20mS H - Out H - Out H - Pulse IC601 Pin 50 IC701 Pin 5 Base Q503 64 S 64 S 64 S HFLB...

  • Page 12: Alignment Settings

    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.

  • Page 13: Abgleichtabelle

    ABGLEICHTABELLE (Die angegebenen Werte sind Mittelwerte und Können individuell nach oben oder unten nach dem korrekten Abgleich abweichen.) Abgleichfunktion Einstellung / Besondere Merkmale H-Pos Horizontale position Optimale Einstellung. V-Pos Vertikale Position Optimale Einstellung. H-Amp Horizontale Amplitude Optimale Einstellung. V-Amp Vertikale Amplitude Optimale Einstellung.

  • Page 14: Block Diagrams

    VIDEO BLOCK DIAGRAM BILDSIGNAL BLOCKSCHEMA 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...
  • Page 15 AUDIO BLOCK DIAGRAM TONSIGNAL BLOCKSCHEMA M - BOARD E - BOARD TUNER IC251 IC2101 E16A M1 AUDIO AUDIO OUTPUT PROCESSOR Q103 DACM_R 24 Q2102 Q252 HEADPHONE X101 DACM_L 25 Q2103 L 11 Q251 SC3_IN_L 37 X102 SC3_IN_R 38 44 MONO IN Q101 1 R OUT SC1_OUT_R 30...
  • Page 16 CONTROL BLOCK DIAGRAM STROMVERSORGUNGS BLOCKSCHEMA E - BOARD H - BOARD TUNER IC3401 L/L’ POS/NEG VIDEO IC2101 SWITCHING AUDIO Q3401 IC601 SDA 1 PROCESSOR VIDEO PROCESSOR SCL 1 SERVICE / TEST SDA 1 SCL 1 M - BOARD SDA 2 M2 E17 SCL 2 VPROT...

  • Page 17: Power Supply Block Diagram

    POWER SUPPLY BLOCK DIAGRAM STROMVERSORGUNGS BLOCKSCHEMA E - BOARD 5V SBY Q852 D867 Q855 Q254 Q253 D868 Q853 Q854 IC251 Y - BOARD AUDIO D862 T802 RL801 OUTPUT R854 IC351 T801 D801 Line Filter T551 OUTPUT 150V 200V D850 R802 DEGAUSS Q850 COIL...

  • Page 18: Parts Location

    PARTS LOCATION EXPLOSIONSZEICHNUNG NOTE: Anmerking: The numbers on the exploded view below Die Nummer auf den mechanischen Teilen refer to the mechanical section of the Zeigt die Bezugsnummer der Ersatzteilliste Replacement Parts List.

  • Page 19: Replacement Parts List

    IC601 VDP3120BPPB1 VIDEO PRCESSOR ENG29505G TUNER IC701 TEA2031A E/W CORRECTION EUR511210 REMOTE CONTROL IC801 STRF6654LF51 POWER SUPPLY TBM8E1728 PANASONIC BADGE IC850 SE140N ERROR AMPLIFER TBX8E049 POWER BUTTON IC851 L78M12MRB 12V REGULATOR THT1062 CRT FIXING SCREW IC852 L78M09MRB 9V REGULATOR TKK8E026...
  • Page 20 Cct Ref Parts Number Description Cct Ref Parts Number Description D601 DAN217T146 DIODE Q252 2SD1328STX TRANSISTOR D603 DAN217T146 DIODE Q253 BC847B TRANSISTOR D605 DAN212KT146 DIODE Q254 BC847B TRANSISTOR D606 MA165TA5 DIODE Q301 BC847B TRANSISTOR D607 MA4051 DIODE Q302 FMY4T148 TRANSISTOR D609 1SR124-4AT82 DIODE...
  • Page 21 Cct Ref Parts Number Description Cct Ref Parts Number Description T801 ETS42AE226AD TRANSFORMER RESISTORS T802 ETP35KAN619U TRANSFORMER ERC12GK825 SOLID 0.5W 10% COILS JA40 ERJ6GEY0R00 S.M.CARB 0.1W J164 TLT331K991R COIL JA15 ERJ6GEY0R00 S.M.CARB 0.1W J208 EXCELSA35V COIL JA44 ERJ6GEY0R00 S.M.CARB 0.1W L101 TLT100K991R COIL...
  • Page 22 Cct Ref Parts Number Description Cct Ref Parts Number Description R102 ERJ6GEYJ103 S.M.CARB 0.1W R372 ERQ12AJ121 FUSIBLE 0.5W R103 ERJ6GEYJ102 S.M.CARB 0.1W R373 ERJ6GEYJ220 S.M.CARB 0.1W R104 ERJ6GEYJ331 S.M.CARB 0.1W R374 ERD25TJ274 CARBON 0.25W 270K R105 ERJ6GEYJ101 S.M.CARB 0.1W R375 ERJ6GEYJ684 S.M.CARB 0.1W...
  • Page 23 Cct Ref Parts Number Description Cct Ref Parts Number Description R704 ERJ6GEYJ563 S.M.CARB 0.1W R951 ERJ6GEYJ391 S.M.CARB 0.1W R705 ERJ6GEYJ104 S.M.CARB 0.1W 100K R952 ERJ6GEYJ102 S.M.CARB 0.1W R706 ERJ6GEYJ822 S.M.CARB 0.1W R953 ERJ6GEYJ750 S.M.CARB 0.1W R707 ERJ6GEYJ391 S.M.CARB 0.1W R954 ERJ6GEYJ391 S.M.CARB 0.1W...
  • Page 24 Cct Ref Parts Number Description Cct Ref Parts Number Description R1174 ERJ6GEYJ221 S.M.CARB 0.1W R3046 ERJ6GEYJ101 S.M.CARB 0.1W R1175 ERJ6GEYJ225 S.M.CARB 0.1W R3047 ERJ6GEYJ101 S.M.CARB 0.1W R1177 ERD25TJ101 CARBON 0.25W R3048 ERJ6GEYJ103 S.M.CARB 0.1W R1178 ERD25TC0T CARBON 0.25W R3049 ERJ6GEYJ101 S.M.CARB 0.1W R1251...
  • Page 25 Cct Ref Parts Number Description Cct Ref Parts Number Description 47µF 1.5nF C108 ECA1CM470GB ELECT C554 ECWF2H514J FILM 500V 12nF C109 ECUV1H102JCX S.M. CAP C555 ECWH15H123JN CAPACITO 1500V 10nF 27nF C110 ECUV1H103ZFX S.M. CAP C556 ECQF4273JZH FILM 400V 10nF 470pF C111 ECA1HMR33GB ELECT...
  • Page 26 Cct Ref Parts Number Description Cct Ref Parts Number Description 180µF 100pF C811 ECOS2GG181NG ELECT 400V C1126 ECUV1H101JCX S.M. CAP 220pF C814 ECKC3D102J CERAMIC C1127 ECUV1H221JCX S.M. CAP 470pF 22nF C815 ECKC1H471J CERAMIC C1128 ECUV1H223KBX S.M. CAP 82pF 27pF C816 EEUFB1E820B CERAMIC C1129...
  • Page 27 Cct Ref Parts Number Description Cct Ref Parts Number Description 2.2nF C3021 ECUV1H222JCX S.M. CAP 2.2nF C3022 ECUV1H222JCX S.M. CAP 2.2nF C3023 ECUV1H222JCX S.M. CAP 47µF C3024 ECA1CM470GB ELECT 560pF C3026 ECUV1H561JCX S.M. CAP 470nF C3027 ECJ3VB1C474K ELECT 3.5KV 2.2nF C3028 ECUV1H222JCX S.M.

  • Page 28: Schematic Diagrams

    SCHEMATIC DIAGRAMS FOR MODEL ZEICHENERKLÄRUNG FÜR MODELL TX-W28R4F TX-W28R4F (EURO-4 CHASSIS) (EURO-4 CHASSIS) IMPORTANT SAFETY NOTICE WICHTIGER SICHERHEITSHINWEIS Components identified by mark have special Teile, die mit einen Hinweis gekennzeichnet sind, characteristics important for safety. When replacing any of sind wichtig für die Sicherheit, Sollte ein Auswechsein these components, use only manufacturer's specified parts.
  • Page 33 CONDUCTOR VIEWS ANSICHT DER LEITERBAHNEN 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 D552 Q2301 I7 D2103 G10...
  • Page 34 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 TPY3 F6 TPY2 E7 TPY1 G6 IC’S...
  • Page 35 M - BOARD TNP8EM013 TRANSISTORS Q1061 Q1062 Q3201 Q3202 Q3203 Q3204 Q3205 Q3206 Q3207 Q3208 Q3209 DIODES D1061 D3201 D3202 D3203 IC’S IC1601...

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