Panasonic TX-28MK1C/M Service Manual
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Panasonic TX-28MK1C/M Service Manual

Panasonic TX-28MK1C/M Service Manual

Euro-4 chassis
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SPECIFICATIONS
Power Source:
220-240V a.c., 50Hz
Power Consumption:
85W
Standby Power
Consumption:
1,8W
Aerial Impedance:
75Ω unbalanced, Coaxial Type
Receiving System:
PAL-B/G, H, D/K, PAL-525/60
SECAM B/G, D/K
M.NTSC
NTSC (AV only)
Receiving Channels:
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)
Intermediate Frequency:
Video
38,9MHz
Sound
33,4MHz, 33,16MHz,
32,4MHz (A2 STEREO)
32,66MHz, 32,4MHz (CZECH STEREO)
Colour
34,47MHz (PAL)
34,5MHz, 34,65MHz (SECAM)
Video/Audio Terminals:
AUDIO MONITOR OUT
Audio (RCAx2)
AV1 IN
Video (21 pin)
Audio (21 pin)
RGB (21 pin)
AV1 OUT
Video (21 pin)
Audio (21 pin)
AV2 IN
Video (21 pin)
Audio (21 pin)
S-Video IN
(21 pin)
AV2 OUT
Video (21 pin)
Audio (21 pin)
Selectable Output (21 pin)
AV3 IN
Audio (RCAx2)
Video (RCAx1)
28,2kV ± 1kV
High Voltage:
Picture Tube:
A66ECFX0X42 66cm
Audio Output:
2 x 15W (Music Power)
8Ω Impedance
Headphones
8Ω Impedance
Accessories supplied:
Remote Control
2 x R6 (UM3) Batteries
Dimensions:
Height:
580mm
Width:
666mm
Depth:
472mm
Net Weight:
31kg
Specifications are subject to change without notice.
Weights and dimensions shown are approximate.
NOTE: This Service Manual should be used in conjunction with the
EURO-4 technical guide.
500mV rms1kΩ
1V p-p 75Ω
500mV rms 10kΩ
1V p-p 75Ω
500mV rms 1kΩ
1V p-p 75Ω
500mV rms 10kΩ
Y: 1V p-p 75Ω
C: 0,3V p-p 75Ω
1V p-p 75Ω
500mV rms 1kΩ
500mV rms10kΩ
1V p-p 75Ω
Colour Television
EURO-4 Chassis
TECHNISCHE DATEN
Netzpannung:
220-240V a.c., 50Hz
Leistungsaufnahme:
85W
Standby
Leistungsaufnahme:
1,8W
Antennenimpedanz:
75Ω asymmetrisch, Koaxial-Typ
Empfangssystem:
PAL-B/G, H, D/K, PAL-525/60
SECAM B/G, D/K
M.NTSC
NTSC (nur AV Eingang)
Empfangsbereiche:
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)
Zwischenfrequenz:
Video
38,9MHz
Sound
33,4MHz, 33,16MHz,
32,4MHz (A2 STEREO)
32,66MHz, 32,4MHz (CZECH STEREO)
Colour
34,47MHz (PAL)
34,5MHz, 34,65MHz (SECAM)
Video/Audio Anschlüsse:
AUDIO MONITOR OUT
Audio (RCAx2)
AV1 EINGANG
Video (21 pin)
Audio (21 pin)
RGB (21 pin)
AV1 AUSGANG
Video (21 pin)
Audio (21 pin)
AV2 EINGANG
Video (21 pin)
Audio (21 pin)
S-Video IN
(21 pin)
AV2 AUSGANG
Video (21 pin)
Audio (21 pin)
Wählbarer Ausgang
AV3 EINGANG
Audio (RCAx2)
Video (RCAx1)
28,2kV ± 1kV
Hochspannung:
Bildrohre:
A66ECFX0X42 66cm
Ton Ausgangsleistung:
2 x 15W (Musikleistung)
Lautsprecher
8Ω Impedanz
Kopfhörer:
8Ω Impedanz
Mitgel. Zubehör:
Fernbedienung
2 x R6 (UM3) Batterien
Abmessungen:
Höhe:
580mm
Breite:
666mm
Tiefe:
472mm
Gewicht:
31kg
Änderungen der Technisichen Daten vorbehalten.
Gewichte und Abmessungen sind Näherungsangaben.
Hinweis: Bitte verwende Sie das Service Manual zusammen mit dem
Technical Guide.
ORDER No. SM-99044
TX-28MK1C/M
500mV rms1kΩ
1V p-p 75Ω
500mV rms 10kΩ
1V p-p 75Ω
500mV rms 1kΩ
1V p-p 75Ω
500mV rms 10kΩ
Y: 1V p-p 75Ω
C: 0,3V p-p 75Ω
1V p-p 75Ω
500mV rms 1kΩ
500mV rms10kΩ
1V p-p 75Ω

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Summary of Contents for Panasonic TX-28MK1C/M

  • Page 1 ORDER No. SM-99044 Colour Television TX-28MK1C/M EURO-4 Chassis SPECIFICATIONS TECHNISCHE DATEN Power Source: 220-240V a.c., 50Hz Netzpannung: 220-240V a.c., 50Hz Power Consumption: Leistungsaufnahme: Standby Power Standby Consumption: 1,8W Leistungsaufnahme: 1,8W Aerial Impedance: 75Ω unbalanced, Coaxial Type Antennenimpedanz: 75Ω asymmetrisch, Koaxial-Typ...

  • Page 2: Table Of Contents

    CONTENTS INHALT SAFETY PRECAUTIONS ............ 2 SICHERHEITSVORKEHRUNGEN ........2 SERVICE HINTS ..............4 SERVICE HINWEISE ............4 SELF CHECK ..............5 SELBSTDIAGNOSE ............5 ADJUSTMENT PROCEDURE ..........6 ABGLEICH ................6 WAVEFORM PATTERN TABLE .......... 7 SIGNAL TABELLE............... 7 ALIGNMENT SETTINGS ............. 8 ABGLEICHTABELLE ............
  • Page 3 LEAKAGE CURRENT HOT CHECK MESSUNG DES KRIECHSTROMS IM EINGESCHALTETEN ZUSTAND Plug the a.c. cord directly into the a.c. outlet. Do not use an isolation transformer for this check. Den Netzstecker direkt in eine Netsteckdose stecken. Connect a 2kΩ 10W resistor in series with an Für diese Messung keinen Trenntransformator exposed metallic part on the receiver and an earth, verwenden.

  • Page 4: Service Hints

    SERVICE HINTS SERVICE HINWEISE HOW TO REMOVE THE REAR COVER ENTFERNEN DER GERÄTERÜCKWAND Remove the 9 screws as shown in Fig.2. Die 9 Schrauben entfernen, siehe Abb.2. Screws Schrauben Fig.2. Abb.2. LOCATION OF CONTROLS LAGE DER EINSTELLREGLER Focus Fokusregler Screen Schirmgitterregler E - Board H - Board...

  • Page 5: 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 6: 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 1. Receive a Greyscale signal. 2. Confirm the following voltages. Set the controls:- ± 0,25V B10 5 ± 0,25V Brightness Minimum ±...

  • Page 7: 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 64µS 64µS 64µS HFLB...

  • Page 8: 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 9: 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 10: Block Diagrams

    VIDEO BLOCK DIAGRAM BILDSIGNAL BLOCKSCHEMA E - BOARD Y - BOARD Q906 Q908 COILS Q905 Q907 Q909 IC601 61 V IN 1 Q950 Q951 Q104 IC351 SVM OUT 34 VIDEO PROCESSOR B OUT 39 Q353 43 B IN Q105 OUTPUT 42 G IN G OUT 38 Q303...
  • Page 11 AUDIO BLOCK DIAGRAM TONSIGNAL BLOCKSCHEMA E - BOARD TUNER IC251 IC2101 AUDIO AUDIO OUTPUT PROCESSOR Q101 DACM_R 24 Q2102 Q252 HEADPHONE Q102 47 ANA_IN1+ DACM_L 25 L 11 Q2103 Q251 SC3_IN_R 38 1 R OUT SC1_OUT_R 30 2 R IN SC1_IN_R 42 SC1_OUT_L 31 3 L OUT...
  • Page 12 CONTROL BLOCK DIAGRAM STROMVERSORGUNGS BLOCKSCHEMA E - BOARD H - BOARD TUNER IC3401 VIDEO IC2101 SWITCHING AUDIO IC601 SDA 1 PROCESSOR VIDEO PROCESSOR SCL 1 SERVICE / TEST SDA 1 SCL 1 SDA 2 SCL 2 VPROT LOCAL KEYSCAN KEYS SWITCH IC1101 IC1103...
  • Page 13 POWER SUPPLY BLOCK DIAGRAM STROMVERSORGUNGS BLOCKSCHEMA E - BOARD 5V SBY Q852 D867 Q855 D868 Q853 Q854 IC251 AUDIO Y - BOARD D862 OUTPUT T802 RL801 R854 IC351 T801 D801 Line Filter T551 OUTPUT 150V 200V D850 R802 Q850 DEGAUSS COIL -14V IC451...

  • Page 14: 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 15: Replacement Parts List

    SPEAKER IC1102 27C2001-L03 EPROM * ENG27507GR TUNER IC1103 XDG2-01CC EAROM * EUR511200 REMOTE CONTROL IC1104 MN1381-R(TA) RESET TBM8E1929 PANASONIC BADGE IC1105 MN1381-T(TA) RESET TBX8E069 POWER BUTTON IC2101 MSP3400CPOC8 AUDIO PROCESSOR TKP8E1289 LID DOOR IC3401 TEA2114 VIDEO SWITCHING TKU8E00350 BACK COVER...
  • Page 16 Cct Ref Parts Number Description Cct Ref Parts Number Description D705 MTZJT-775.1A DIODE Q551 2SD1577LB TRANSISTOR D801 RBV4-08 DIODE Q552 2SC1473-RN TRANSISTOR D803 1SR124-4AT82 DIODE Q701 BC857B TRANSISTOR D804 1SR124-4AT82 DIODE Q850 2SD1273PLB TRANSISTOR D805 TLP621GR-LF2 PHOTO COUPLER Q851 BC857B TRANSISTOR D806 1SR124-4AT82...
  • Page 17 Cct Ref Parts Number Description Cct Ref Parts Number Description L901 EXCELSA24T COIL JA45 ERJ6GEY0R00 S.M.CARB 0.1W L902 EXCELSA24T COIL JA46 ERJ8GEY0R00 S.M.CARB .125W L1103 TLTACT100K COIL JA47 ERJ6GEY0R00 S.M.CARB 0.1W L1104 EXCELSA35T COIL JA48 ERJ6GEY0R00 S.M.CARB 0.1W L1105 ELJFC2R2KF COIL JA49 ERJ6GEY0R00...
  • Page 18 Cct Ref Parts Number Description Cct Ref Parts Number Description R269 ERQ14AJ101 METAL 0.25W R566 ERJ6GEYJ563 S.M.CARB 0.1W R271 ERJ6GEYJ103 S.M.CARB 0.1W R601 ERJ6GEYJ101 S.M.CARB 0.1W R272 ERF7ZK4R7 WOUND 7W 10% R602 ERJ6GEYJ821 S.M.CARB 0.1W R301 ERJ6GEYJ391 S.M.CARB 0.1W R603 ERJ8GEYJ103 S.M.CARB .125W...
  • Page 19 Cct Ref Parts Number Description Cct Ref Parts Number Description R869 ERJ6GEY0R00 S.M.CARB 0.1W R1140 ERJ6GEYJ471 S.M.CARB 0.1W R870 ERJ6GEYJ272 S.M.CARB 0.1W R1141 ERJ6GEYJ471 S.M.CARB 0.1W R871 ERJ6GEYJ153 S.M.CARB 0.1W R1145 ERJ6GEYJ101 S.M.CARB 0.1W R872 ERG1SJ183 METAL R1146 ERJ6GEYJ101 S.M.CARB 0.1W R873 ERG1SJ223...
  • Page 20 Cct Ref Parts Number Description Cct Ref Parts Number Description 220µF R3006 ERJ6GEYJ471 S.M.CARB 0.1W C120 ECA1CM221GB ELECT 560pF R3007 ERJ6GEYJ101 S.M.CARB 0.1W C121 ECUV1H561KBX S.M. CAP 22pF R3008 ERJ6GEYJ153 S.M.CARB 0.1W C124 ECUV1H220JCX S.M. CAP 10pF R3009 ERJ6GEYJ750 S.M.CARB 0.1W C125 ECUV1H100DCX...
  • Page 21 Cct Ref Parts Number Description Cct Ref Parts Number Description 470pF 470pF C567 ECA1EHG102B ELECT C856 ECA1AHG222B ELECT 470pF 470pF C568 ECKC2H471J CERAMIC 500V C857 ECKC2H471J CERAMIC 500V 470pF C569 ECKC2H102J CERAMIC 500V C858 ECEA1HGE102 ELECT 100nF 100nF C601 ECUV1H104KBX S.M.
  • Page 22 Cct Ref Parts Number Description Cct Ref Parts Number Description 3.3µF 560pF C2113 ECA1HM3R3GB ELECT C3106 ECUV1H561JCX S.M. CAP 100nF 47µF C2114 ECJ2VF1H104Z ELECT 350V C3107 ECA1HM470GB ELECT 220pF 47µF C2115 ECUV1H221JCX S.M. CAP C3108 ECA1HM470GB ELECT 220pF 390pF C2116 ECUV1H221JCX S.M.
  • Page 23 SCHEMATIC DIAGRAMS FOR MODEL ZEICHENERKLÄRUNG FÜR MODELL TX-28MK1C/M TX-28MK1C/M (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 27 CONDUCTOR VIEWS ANSICHT DER LEITERBAHNEN E-BOARD TNP8EE009 TRAN’S DIODES D558 Q3601 L8 D3102 B7 D557 Q3007 M9 D3101 B7 D556 Q3006 N10 D2304 G7 D555 Q3001 N8 D2303 G7 D554 Q2304 I7 D2161 G9 D553 Q2303 M6 D2105 G10 D552 Q2302 I7 D2104 F9 D551...

  • Page 28: Conductor Views

    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 29 H - BOARD TNP8EH002 TRANSISTORS Q3401 Q3402 I.C.’S IC3401 C2...

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