background image

Components Identified by        mark have special 
characteristics important for safety.
When replacing any of these components, use only 
manufacturers specified parts.
* In case of ordering these spare parts, please 
always add the complete Model-Type number to 
your order.

Teile, die mit einen Hinweis     gekennzeichnet sind 
wichtig für die Sicherhet. Solite ein Auswechsein 
erfordelrich sein, sind unbdingt Originalteile 
einzusetzen.
Bei der Bestellung von Ersatzteilen, di mit * 
gekennzeichnet sind, geben Sie bitte unbedingt die 
vollständige Typenbezeicnung mit an.

Important Safety Notice

ERSATZTEILLISTE

REPLACEMENT PARTS LIST

Wichtiger Sicherhitshinweis

Description

Cct Ref

Parts Number

Description

Cct Ref

Parts Number

COMMON PARTS

MECHANICAL PARTS

SPEAKER              

     1

EASG12D531P2

TUNER                

     2

ENG27507G   

REMOTE CONTROL     

     3

EUR511200   

DOOR LID             

     4

TKP8E1177   

CHASSIS FRAME    

     5

TMX8E023    

H P.C.B.             

     6

TNP8EH002AA 

BATTERY COVER (REMOTE)

     7

UR51EC904A  

MISCELLANEOUS COMPONENTS

FIX CLIP              

      

31221212478

I.C. SOCKET           

      

832AG11D-ESL

RELAY   

      

F9-4-220

84 PIN SOCKET        

      

PCS-084A-1  

PRESET LABEL     

      

TBM8E1879   

LID SWITCH       

      

TEK6935     

LED PANEL        

      

TKP8E1178   

LED TUBE             

      

TKP8E1179   

BATTERY PACK          

      

UM-3DJ-2P

RELAY                 

RL801 TSE1885-1

THERMISTOR            

R802  

232266296706

CRT SOCKET            

S351  

0330550049  

INSTRUCTION BOOKS

GERMAN                

      

TQB8E2567A  

DUTCH                 

      

TQB8E2567B  

ITALIAN               

      

TQB8E2567C  

I.C.s

AUDIO OUTPUT        

IC251 

LA4282      

R.G.B. AMPLIFIER     

IC351 TDA6103Q-N3 

VERTICAL OUTPUT       

IC451 

LA7845N     

VIDEO PROCESSOR     

IC601 VDP3108BPPB1

HORIZONTAL OUTPUT

IC701 

TEA2031A    

POWER SUPPLY        

IC801 STRF6654LF51

12V REGULATOR

IC851 L78M12MRB

8V REGULATOR          

IC853 AN78L08TA

TEXT MICRO        

IC1101

SDA5450C48GE

EPROM *               

IC1102

27C2001F01AA

DIODE                

IC1104

MN1381-R(TA)

DIODE                

IC1105

MN1381-T(TA)

AUDIO PROCESSOR     

IC2101

MSP3400CPOC8

AV SWITCHING     

IC3401

TEA2114     

FUSES

FUSE             

F802  

19181-3.15  

FUSE HOLDER

F8021 EYF52BC

FUSE HOLDER

F8022 EYF52BC

DIODES

DIODE                

D251  

MA2180TP    

DIODE   

D253  

MA700TA5

DIODE   

D254  

MA700TA5

DIODE                

D354  

1SR124-4AT82

DIODE                

D355  

1SR124-4AT82

DIODE                

D356  

1SR124-4AT82

DIODE

D357  

MA165TA5

DIODE

D358  

MA165TA5

DIODE

D359  

MA165TA5

DIODE                

D360  

MTZJT-7715A 

DIODE

D361  

MA165TA5

DIODE

D362  

MA165TA5

DIODE

D363  

MA165TA5

DIODE

D364  

MA165TA5

DIODE

D453  

MA165TA5

DIODE                 

D454  

ERA15-02V3  

DIODE                

D456  

MTZJT-775.6C

DIODE

D457  

MA165TA5

DIODE

D501  

MA165TA5

DIODE                

D502  

1SR124-4AT82

DIODE                

D511  

MA4047      

DIODE                

D551  

ERD07-15L7  

DIODE                 

D552  

RU3LFA1     

DIODE                

D553  

1SR124-4AT82

DIODE                

D554  

1SR124-4AT82

DIODE

D556  

MA165TA5

DIODE                

D557  

1SR124-4AT82

DIODE                

D558  

1SR124-4AT82

DIODE                

D601  

DAN217T146  

DIODE                

D603  

DAN217T146  

DIODE                

D605  

DAN212KT146 

DIODE

D606  

MA165TA5

DIODE   

D607  

MA4051

DIODE                

D609  

1SR124-4AT82

DIODE                

D615  

STZ6.2NT146 

DIODE                

D616  

STZ6.2NT146 

DIODE

D701  

MA165TA5

DIODE                 

D702  

MTZJT-775.1C

DIODE                

D704  

MA29TA5     

DIODE                

D705  

MTZJT-775.6C

DIODE                

D801  

RBV4-08     

DIODE                

D803  

1SR124-4AT82

DIODE                

D804  

1SR124-4AT82

PHOTO COUPLER        

D805  

TLP621GR-LF2

DIODE                

D806  

1SR124-4AT82

DIODE                

D850  

RU4BLF-L1   

DIODE                

D851  

MTZJT776.2B 

DIODE

D852  

MA165TA5

DIODE                

D853  

MA2180BLFS  

DIODE                 

D854  

TVSRU2AMLFA5

DIODE   

D855  

FML22SLF610

17

All manuals and user guides at all-guides.com

Summary of Contents for TX-21MD4C

Page 1: ...iagnostic and control functions to be performed For more details contact your local Panasonic company BACK EXIT TX 28 25 21MD4C Service Manual Safety Specifications Block Diagrams Schematic Diagrams PCB Views Self Check Service Information Parts List Service Hints Disassembly Location of Controls Waveforms Mechanical View Adjustments All manuals and user guides at all guides com ...

Page 2: ...all guides com ...

Page 3: ...BACK BACK BACK E Schematics H Schematic Y Schematics E PCB Y PCBs Audio Power supply Control Video All manuals and user guides at all guides com ...

Page 4: ...te NOTE This Service Manual should be used in conjunction with the EURO4 technical guide TECHNISCHE DATEN Werte in klammern gelten nur fur TX 25MD4C TX 21MD4C Netzpannung 220 240V AC 50Hz Leistungsaufnahme 85W 71W Antennenimpedanz 75Ω asymmetrisch Koaxial Typ Standby Leistungsaufnahme 1 8W 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 ...

Page 5: ...between 4M ohm and 20M ohm When the exposed metal does not have a return path to the chassis the reading must be infinite SICHERHEITSVORKEHRUNGEN ALLGEMEINE RICHTLINIEN 1 Es ist empfehlenswert einen Trenntransformator in die Stromversorgung zu schalten bevor Reparaturen an einem Gerät vorgenommen werden dessen Chassis unter Spannung steht 2 Bei der Durchführung von Servicearbeiten dürfen die urspr...

Page 6: ...X Radiation possibility it is essential to use the specified tube MESSUNG DES KRIECHSTROMS IM EINGESCHALTETEN ZUSTAND 1 Den Netzstecker direkt in eine Netsteckdose stecken Für diese Messung keinen Trenntransformator verwenden 2 Einen 2kΩ 10W Widerstand in Serie mit einem von außen zugänglichen Metallteil am Fernsehgerät und einer guten Erdung z B Wasserleitung anschließen 3 Ein Wechselstrom Voltme...

Page 7: ...ISE ENTFERNEN DER GERÄTERÜCKWAND 1 Die 9 Schrauben entfernen siehe Abb 2 LOCATION OF CONTROLS LAGE DER EINSTELLREGLER Screws Schrauben Fig 2 Abb 2 E Board Y Board Focus Fokusregler Screen Schirmgitterregler H Board 4 Fig 3 Abb 3 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 8: ...ve The screen will show 3 Press the BLUE button on the remote control The screen will show 4 Press the STR button on the remote control The screen will show 5 All the tuning information stored inside the TV will now be transferred to the Memory Pack This process will take 2 3 minutes to complete and when finished the screen will show Memory Pack to TV process 1 Plug the memory pack into the AV1 21...

Page 9: ...alten Auf dem Bildschirm erscheint 3 Nun die BLAUE Taste an der Fernbedienung betätigen Auf dem Bildschirm erscheint 4 Nun die STR Taste an der Fernbedienung betätigen Der Bildschirm meldet nun 5 Die im FS Gerät abgespeicherten Kanal Einstelldaten werden nun in das Memory Pack überspielt Bei abgeschlossener Datenübertragung meldet der Bildschirm Kopieren der Einstelldaten vom Memory Pack in das FS...

Page 10: ...d Notizen Genauso wie dieses Produkt einen ersten Schritt in Richtung erweitertes interaktives Training bereitstellt ermöglicht es einen noch schnelleren Zugang zu technischen Informationen VDP O K TUN O K E2 O K MSP O K DPL PCB O K Cab O K Sum Factory use only Nur für Herstellung OPTION 1 3D 3D OPTION 2 0C 0E OPTION 3 1D 1D OPTION 4 00 00 OPTION 5 EF EF OPTION 6 23 23 7 Service Aids To aid in the...

Page 11: ...g2 adjustment and adjust the screen VR until the display shows O K ABGLEICH Vorbereitungen Abgleich B Abgleich 1 Testbild empfangen Helligkeit auf Minimum Kontrast auf Minimum Lautstärke Minimum 1 Mit R811 muß die B2 auf 148V 1V 130V 1V TX 21MD4C eingestellt werden 2 Folgende Spannungen sind zu überprüfen B9 5 0 25V B10 5 0 25V B5 12 0 5V B11 33 1 5V B4 16 1V B7 8 0 5V B12 26 1V B8 5 5 0 5V B3 35 ...

Page 12: ...601 Pin 50 Vert Out IC601 Pin 31 20mS 0 7V 13µS 3 7V SCL IC1201 Pin 3 R Out E8 Pin 5 64µS 4 6V HFLB IC601 Pin 13 64µS 6 2V R Out IC601 Pin 37 64µS 275mV G Out IC601 Pin 38 275mV 64µS Vert Drive IC451 Pin 2 20mS 57V HFLB IC701 Pin 8 64µS 1 5V G Out E8 Pin 3 64µS 4 4V SVM Out IC601 Pin 34 88mV 64µS H Out IC701 Pin 5 30mV 64µS All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 13: ...ptimum setting Vertical Symmetry V Sym 002 Optimum setting DVCO DVCO 005 Receive a PAL Colour Bar Pattern For DVCO alignment press Blue button wait until the colours are changing slowly and press STR Cut off DC Cut off 0171 Ug2 Test Ug2 055 O K To adjust Cutoff connect an oscilloscope to the blue cathode adjust cutoff value using the Yellow and Blue buttons until the black level is 160V 5V press S...

Page 14: ...Einstellung Vertikale Symmetrie V Sym 002 Optimale Einstellung DVCO DVCO 005 Ein Farbbalken Testbild empfangen Zum Abgleich des Farboszillators DVCO die blau Taste drücken Nachdem ein leichtes Flackern in den Farbbalken zum Stillstand gekommen ist die STR Taste drücken Cut off Cut off 0171 Ug2 Test Ug2 055 O K Einen Oszillographen an die blaue Katode der Bildröhre anschliessen Mit der gelben und b...

Page 15: ...Q352 Q351 CRT 3 2 1 7 8 9 Y2 4 3 5 IC351 TUNER Q104 5HG OXH UHHQ 9LGHR Q 9 9LGHR 2XW G OUT 38 R OUT 37 G IN 46 R IN 45 Q306 Q304 Q302 Q354 7 7 VM COILS Q905 Q907 Q909 Q908 Q906 SVM OUT 34 Q950 Q951 Q3001 G 38 B 39 Y BOARD E BOARD RGB OUTPUT VIDEO PROCESSOR MICRO PROCESSOR H3 E61 E15 1 6 8 H1 1 6 8 IC3401 Q3402 8 6 3 H BOARD VIDEO SWITCHING TX 28MD4C TX 25MD4C ONLY TX 28MD4C TX 25MD4C ONLY 12 All m...

Page 16: ...R OUT 3 L OUT 1 R OUT 3 L OUT 2 R IN 6 L IN 2 R IN 6 L IN 47 ANA_IN1 DACM_L 25 SC3_IN_R 38 SC1_IN_R 42 SC1_IN_L 41 SC2_OUT_R 27 SC2_OUT_L 28 SC2_IN_R 40 SC2_IN_L 39 Q252 Q251 2 L L 11 4 L HEADPHONE 7 R 5 L E6 1 E7 3 Q2304 Q2302 21 DACA_R 22 DACA_L E BOARD AUDIO PROCESSOR AUDIO OUTPUT AUDIO MONITOR OUT Q2303 Q2301 13 All manuals and user guides at all guides com ...

Page 17: ...IX 60 Q854 52 Q853 74 IC1051 Q1052 81 AV2 8 10 AV1 8 10 12 Q856 75 Q851 Q1106 Q1105 Q1107 Q1104 51 72 73 AV LINK SLOW 2 SLOW 1 SCL 1 SDA 1 59 58 Q3006 Q3007 55 VPROT KEYSCAN ON OFF R C L E D PROT 1 SLOW 2 OUT IN SLOW 1 SERVICE SCL SDA H BOARD E BOARD VIDEO SWITCHING AUDIO PROCESSOR MICRO PROCESSOR VIDEO PROCESSOR EAROM REMOTE CONTROL RECEIVER Q1051 D1051 14 Q3401 3 All manuals and user guides at a...

Page 18: ...S4 B1 P2 P1 S5 S2 S7 10 9 6 8 5 6 2 6 3 1 6 12V 200V 33V 14V 14V 27V 150V 29V 7V 15V 5V D867 Q852 Q854 Q855 1 D805 R805 R814 IC850 1 2 D862 R854 33V 16 REMOTE CONTROL RECEIVER RESET MICRO PROCESSOR AUDIO PROCESSOR VIDEO PROCESSOR EPROM EAROM RESET REG REG REG IC3401 7 VIDEO SWITCHING EW CORRECTION POWER SUPPLY RGB OUTPUT V OUTPUT AUDIO OUTPUT D801 E BOARD Y BOARD E3 2 Y3 2 E1 4 1 E2 2 1 R802 DEGAU...

Page 19: ...ploded view below refer to the mechanical section of the Replacement Parts List Anmerking Die Nummer auf den mechanischen Teilen Zeigt die Bezugsnummer der Ersatzteilliste an 17 18 12 11 9 10 16 15 4 7 3 14 8 13 5 1 6 2 All manuals and user guides at all guides com ...

Page 20: ...ESSOR IC601 VDP3108BPPB1 HORIZONTAL OUTPUT IC701 TEA2031A POWER SUPPLY IC801 STRF6654LF51 12V REGULATOR IC851 L78M12MRB 8V REGULATOR IC853 AN78L08TA TEXT MICRO IC1101 SDA5450C48GE EPROM IC1102 27C2001F01AA DIODE IC1104 MN1381 R TA DIODE IC1105 MN1381 T TA AUDIO PROCESSOR IC2101 MSP3400CPOC8 AV SWITCHING IC3401 TEA2114 FUSES FUSE F802 19181 3 15 FUSE HOLDER F8021 EYF52BC FUSE HOLDER F8022 EYF52BC D...

Page 21: ...STOR Q951 FMY4T148 TRANSISTOR Q1051 BC847B TRANSISTOR Q1052 BC847B TRANSISTOR Q1101 BC847B TRANSISTOR Q1104 BC847B TRANSISTOR Q1105 BC847B TRANSISTOR Q1106 BC847B TRANSISTOR Q1107 BC847B TRANSISTOR Q1108 BC847B TRANSISTOR Q2101 BC857B TRANSISTOR Q2102 BC857B TRANSISTOR Q2103 BC857B TRANSISTOR Q2301 BC847B TRANSISTOR Q2302 BC857B TRANSISTOR Q2303 BC847B TRANSISTOR Q2304 BC857B TRANSISTOR Q3001 BC84...

Page 22: ...J6GEY0R00 0 1W 5 0 S M CARB R112 ERJ6GEYJ101 0 1W 5 100 S M CARB R113 ERJ6GEYJ223 0 1W 5 22K S M CARB R114 ERJ6GEYJ331 0 1W 5 330 S M CARB R115 ERJ6GEYJ331 0 1W 5 330 S M CARB R116 ERJ6GEYJ562 0 1W 5 5K6 S M CARB R117 ERJ6GEYJ222 0 1W 5 2K2 S M CARB R118 ERJ6GEYJ102 0 1W 5 1K S M CARB R120 ERJ6GEYJ332 0 1W 5 3K3 S M CARB R121 ERJ6GEYJ471 0 1W 5 470 S M CARB R251 ERJ6GEYJ101 0 1W 5 100 S M CARB R25...

Page 23: ...ARBON R812 ERD75TAJ825 0 75W 5 8M2 WOUND R813 ERF7ZK2R7 7W 20 2R7 CARBON R814 ERD25TJ473 0 25W 5 47K CARBON R815 ERD25TJ222 0 25W 5 2K2 CARBON R850 ERD25TJ122 0 25W 5 1K2 S M CARB R852 ERJ6GEY0R00 0 1W 5 0 S M CARB R853 ERJ6GEYJ102 0 1W 5 1K METAL R854 ERG2FJ223 2W 5 22K S M CARB R855 ERJ6GEYJ752 0 1W 5 7K5 S M CARB R857 ERJ6GEYJ752 0 1W 5 7K5 S M CARB R858 ERJ6GEYJ752 0 1W 5 7K5 S M CARB R859 ERJ...

Page 24: ... CARB R2310 ERJ6GEYJ471 0 1W 5 470 S M CARB R2311 ERJ6GEYJ102 0 1W 5 1K S M CARB R2312 ERJ6GEYJ103 0 1W 5 10K S M CARB R3001 ERJ6GEYJ101 0 1W 5 100 S M CARB R3002 ERJ6GEYJ471 0 1W 5 470 S M CARB R3003 ERJ6GEYJ101 0 1W 5 100 S M CARB R3004 ERJ6GEYJ153 0 1W 5 15K S M CARB R3005 ERJ6GEYJ101 0 1W 5 100 S M CARB R3006 ERJ6GEYJ471 0 1W 5 470 S M CARB R3007 ERJ6GEYJ101 0 1W 5 100 S M CARB R3008 ERJ6GEYJ1...

Page 25: ...V 470pF CERAMIC C568 ECKC2H471J 500V 470pF CERAMIC C569 ECKC2H102J 500V 1nF S M CAP C601 ECUV1H104KBX 50V 1nF ELECT C602 ECA1HM101GB 50V 100µF S M CAP C603 ECUV1H102JCX 50V 1nF S M CAP C604 ECUV1H223ZFX 50V 22nF ELECT C605 ECA1HM101GB 50V 100µF ELECT C606 ECA1HM3R3GB 50V 3 3µF ELECT C607 ECJ2VF1H104Z 350V 100nF S M CAP C608 ECUV1H153KBX 50V 15nF S M CAP C609 ECUV1H153KBX 50V 15nF S M CAP C610 ECUV...

Page 26: ...9 ECA1CM102B 16V 1pF ELECT C2130 ECA1CM331B 16V 330µF S M CAP C2131 ECUV1H103ZFX 50V 10nF S M CAP C2132 ECUV1H103ZFX 50V 10nF S M CAP C2134 ECUV1H103ZFX 50V 10nF ELECT C2135 ECA1HM101GB 50V 100µF ELECT C2136 ECJ2VF1H104Z 350V 100nF ELECT C2137 ECA1CM100GB 16V 10µF S M CAP C2138 ECUV1H471KBX 50V 470pF S M CAP C2139 ECUV1H221JCX 50V 220pF ELECT C2140 ECA1HM101GB 50V 100µF S M CAP C2141 ECUV1H152JCX ...

Page 27: ...NP8EY012AA MISCELLANEOUS COMPONENTS OUTER CARTON TPC8E4675 TOP CUSHION TPD8E608 1 BOTTOM CUSHION TPD8E609 ANODE LEAD ZTUZAE550A I C s ERROR AMPLIFER IC850 SE140N EAROM IC1103 XGL2 01EC DIODES DIODE D901 MA165TA5 DIODE D902 MA165TA5 DIODE D904 MA165TA5 DIODE D905 MA165TA5 DIODE D906 RLS72TE 11 TRANSISTORS TRANSISTOR Q905 BC847B TRANSISTOR Q906 BC847B TRANSISTOR Q907 BC857B TRANSISTOR Q908 2SA1535AR...

Page 28: ...1W 5 0 S M CARB JA2 ERJ6GEY0R00 0 1W 5 0 S M CARB JA1 ERJ6GEY0R00 0 1W 5 0 CARBON R363 ERD25TJ103 0 25W 5 10K CARBON R364 ERD25TJ103 0 25W 5 10K CARBON R365 ERD25TJ103 0 25W 5 10K S M CARB R370 ERJ6GEYJ102 0 1W 5 1K METAL R377 ERQ1ABJP5R1 0 5W 5 5R1 WOUND R461 ERW2PK1R2 2W 10 1R2 FUSIBLE R702 ERQ12HJ8R2 0 5W 5 8R2 S M CARB R913 ERJ6GEYJ473 0 1W 5 47K S M CARB R914 ERJ6GEYJ822 0 1W 5 8K2 S M CARB R...

Page 29: ...upply Circuit contains a circuit area which uses a separate power supply to isolate the earth connection The circuit is defined by HOT and COLD indications in the schematic diagram All circuits except the Power Circuit are COLD Take the following precautions 1 Das Schaltnetzteil enthält Bereiche die direkt mit dem Netz verbunden sind Diese Bereiche sind im Schaltplan mit HOT gekennzeichnet Alle an...

Page 30: ...All manuals and user guides at all guides com ...

Page 31: ...All manuals and user guides at all guides com ...

Page 32: ...All manuals and user guides at all guides com u i d e s c o m ...

Page 33: ...All manuals and user guides at all guides com ...

Page 34: ...All manuals and user guides at all guides com ...

Page 35: ...864 I10 IC1103 F8 Q854 B4 D863 G9 IC1102 D10 Q853 B4 D862 N10 IC1101 D8 Q852 B5 D861 J9 IC1051 A10 Q850 F5 D860 I10 IC852 I10 Q701 J5 D859 H5 IC851 G5 Q552 N3 D858 E5 IC850 H4 Q551 K1 D857 E5 IC801 G2 Q503 I2 D855 F4 IC701 K5 Q451 F8 D854 G4 IC601 L7 Q394 K9 D853 H3 IC451 L5 Q305 K9 D852 I4 IC251 D6 Q303 K9 D851 I4 TP S Q302 J9 D850 H4 TPE14 M5 Q301 K9 D806 G2 TPE13 M4 Q253 C4 D805 H2 TPE12 K4 Q25...

Page 36: ...Q351 F6 DIODES D906 F1 D905 G4 D904 D3 D902 G4 D901 G3 D364 C9 D363 C8 D362 B9 D361 B7 D360 D8 D359 G6 D358 E7 D357 F7 D356 G7 D355 F7 D354 G7 TEST POINTS TPY6 B8 TPY5 D5 TPY4 E5 TPY3 F6 TPY2 E7 TPY1 G6 IC S IC351 E8 H G F E D C B A 1 2 3 4 5 6 7 8 9 All manuals and user guides at all guides com ...

Page 37: ... G5 D358 F5 D359 G5 D360 C6 D361 B6 D362 D7 D363 D7 D364 D7 TEST POINTS TPY1 E4 TPY2 F5 TPY3 F4 TPY4 E3 TPY5 D3 TPY6 B6 TRANSISTORS Q351 G4 Q352 F4 Q353 G4 Q354 C7 I C S IC351 E6 1 2 3 4 5 6 7 A C B D E F G H All manuals and user guides at all guides com ...

Page 38: ...all guides c om ...

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