Panasonic TX-28LDP4F Service Manual Download Page 29 | Manualshive

Page: 29 / 39

Panasonic TX-28LDP4F Service Manual Download Page 29

Description

Cct Ref

Parts Number

Description

Cct Ref

Parts Number

S.M. CAP

C3009 ECUV1H222JCX

50V

2.2nF

ELECT

C3010 ECA1CM470GB

16V

47µF

S.M. CAP

C3012 ECUV1H561JCX

50V

560pF

ELECT

C3013

ECJ3VB1C474K

3.5KV

470nF

S.M. CAP

C3014 ECUV1H222JCX

50V

2.2nF

S.M. CAP

C3015 ECUV1H222JCX

50V

2.2nF

S.M. CAP

C3016 ECUV1H222JCX

50V

2.2nF

ELECT

C3017 ECA1CM470GB

16V

47µF

S.M. CAP

C3019 ECUV1H561JCX

50V

560pF

ELECT

C3020

ECJ3VB1C474K

3.5KV

470nF

S.M. CAP

C3021 ECUV1H222JCX

50V

2.2nF

S.M. CAP

C3022 ECUV1H222JCX

50V

2.2nF

S.M. CAP

C3023 ECUV1H222JCX

50V

2.2nF

ELECT

C3024 ECA1CM470GB

16V

47µF

S.M. CAP

C3026 ECUV1H561JCX

50V

560pF

ELECT

C3027

ECJ3VB1C474K

3.5KV

470nF

S.M. CAP

C3028 ECUV1H222JCX

50V

2.2nF

ELECT

C3029 ECA1HM101GB

50V

100µF

S.M. CAP

C3032 ECUV1H271JCX

50V

270pF

S.M. CAP

C3033 ECUV1H271JCX

50V

270pF

S.M. CAP

C3034 ECUV1H271JCX

50V

270pF

S.M. CAP

C3035 ECUV1H271JCX

50V

270pF

S.M. CAP

C3101

ECUV1H104KBX

50V

270pF

S.M. CAP

C3102

ECUV1H104KBX

50V

270pF

S.M. CAP

C3103 ECUV1H561JCX

50V

560pF

S.M. CAP

C3104 ECUV1H561JCX

50V

560pF

S.M. CAP

C3105 ECUV1H561JCX

50V

560pF

S.M. CAP

C3106 ECUV1H561JCX

50V

560pF

ELECT

C3107 ECA1HM470GB

50V

47µF

ELECT

C3108 ECA1HM470GB

50V

47µF

S.M. CAP

C3111 ECUV1H391JCX

50V

390pF

S.M. CAP

C3112 ECUV1H271JCX

50V

270pF

FILM

C3401 ECQM1H224J

50V

220nF

S.M. CAP

C3402 ECUV1H101JCX

50V

100pF

ELECT

C3403 ECA1HM101GB

50V

100µF

FILM

C3404 ECQM1H224J

50V

220nF

S.M. CAP

C3405 ECUV1H180JCX

50V

18pF

S.M. CAP

C3406 ECUV1H271JCX

50V

270pF

S.M. CAP

C3407 ECUV1H271JCX

50V

270pF

ELECT

C3408 ECA1HM101GB

50V

100µF

ELECT

C3601 ECA1HM101GB

50V

100µF

S.M. CAP

JSE28

ECUV1H104KBX

50V

100µF

TERMINALS AND LINKS

RCA JACK

JK2401

LPR1250-1150

A.V. TERMINAL

JK3101

TJB16673

SWITCHES

SWITCH

S801

ESB92S11B

SWITCH

S1201 EVQ23405R

SWITCH

S1202 EVQ23405R

SWITCH

S1203 EVQ23405R

SWITCH

S1204 EVQ23405R

SWITCH

S1205 EVQ23405R

27

«
...
27
28
29
30
31
...
»

Summary of Contents for TX-28LDP4F

Page 1: ... PC to allow a number of diagnostic and control functions to be performed For more details contact your local Panasonic company BACK EXIT TX 28LDP4F 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 ...

Page 2: ...BACK BACK BACK K Schematic E Schematic N Schematic H Schematic Y Schematic E PCB Y PCB K PCB Audio Dolby Video Control Power supply ...

Page 3: ...e approximate NOTE This Service Manual should be used in conjunction with the EURO4 technical guide TECHNISCHE DATEN Netzpannung 220 240V AC 50Hz Leistungsaufnahme 90W Antennenimpedanz 75Ω asymmetrisch Koaxial Typ Standby Leistungsaufnahme 1 8W Empfangssystem PAL I B G H D K PAL 525 60 SECAM L L 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 ...

Page 4: ... the reading should be 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 Servicear...

Page 5: ...ilure 3 To prevent any 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 ...

Page 6: ...hown in Fig 2 SERVICE HINWEISE ENTFERNEN DER GERÄTERÜCKWAND 1 Die 16 Schrauben entfernen siehe Abb 2 LOCATION OF CONTROLS LAGE DER EINSTELLREGLER Screws Schrauben Fig 2 Abb 2 4 Fig 3 Abb 3 K Board E Board Y Board Focus Fokusregler Screen Schirmgitterregler H Board N Board ...

Page 7: ...e Mode as explained above 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 memo...

Page 8: ...auf Service Modus umschalten 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 vo...

Page 9: ...raktive Multimedia Hinweise und 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 O K PCB O K Cab O K Sum Factory use only Nur für Herstellung OPTION 1 39 OPTION 2 0C OPTION 3 1F OPTION 4 03 OPTION 5 EF OPTION 6 25 7 Service Ai...

Page 10: ...e oscilloscope Select Ug2 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 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 B...

Page 11: ... Pin 39 275mV 64µS 64µS 3V H Out IC601 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 ...

Page 12: ...l Linearity V Lin 006 Optimum 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 l...

Page 13: ...tät V Lin 006 Optimale 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 anschliess...

Page 14: ...T 59 B IN 47 B OUT 39 Q305 Q303 Q301 E8 4 3 5 Q353 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 H BOARD IC3401 Q3402 8 6 3 VIDEO SWITCHING ...

Page 15: ...A_IN1 44 MONO IN 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 HEADPHONE 2 R 3 L 21 DACA_R 22 DACA_L E12 3 4 5 6 7 I2S_DA_IN_2 18 I2S_DA_IN_1 12 I2S_DA_OUT 11 I2S_WS 10 I2S_CL 9 I2S_DA_IN_2 I2S_DA_IN_1 I2S_DA_OUT I2S_WS I2S_CL E23 3 1 To K3 From K8 H_LEFT H_RIGHT R L E BOARD X101 X102 5 R R 7 2 L L 11 IC251 AUDIO OUTPUT AUDIO PROCESSOR 3 ...

Page 16: ... 3 K8 To E23 1 3 IC2404 1 3 5 7 Q2410 Q2409 Audio Left Audio Right Headphone Left Headphone Right Surround L Centre Out Left Front Surround R Right Front Q2419 Q2418 Q2417 Q2421 Q2420 I2S_DA_OUT_2 I2S_DA_OUT_1 I2S_DA_IN 6 7 I2S_WS I2S_CL K BOARD OPERATIONAL AMPLIFIER HEADPHONE AMPLIFIER 19 11 12 IC2401 25 24 22 21 27 10 9 DOLBY PROCESSOR ...

Page 17: ... Q853 74 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 IC2101 8 7 4 AUDIO PROCESSOR MICRO PROCESSOR VIDEO PROCESSOR EAROM N BOARD N1 4 E19 4 8 8 D1071 K2 3 E11 3 4 4 K BOARD Q3401 IC2401 7 8 IC1071 LED RECEIV...

Page 18: ...67 Q852 Q854 Q855 1 D805 R805 R814 IC850 1 2 D862 R854 33V 16 LED RECEIVER N BOARD RESET MICRO PROCESSOR AUDIO PROCESSOR VIDEO PROCESSOR EPROM EAROM RESET ERROR AMPLIFIER REG REG IC3401 7 VIDEO SWITCHING IC701 6 EW CORRECTION POWER SUPPLY IC451 6 3 1 V OUTPUT AUDIO OUTPUT D801 E BOARD Y BOARD E3 2 Y3 2 N1 2 E19 2 E1 4 1 E2 2 1 R802 DEGAUSS COIL Line Filter E62 1 H3 2 IC351 6 RGB OUTPUT E11 7 K2 7 ...

Page 19: ...22 1 10 5 6 7 21 4 19 9 8 14 12 2 15 3 17 16 13 NOTE The numbers on the exploded 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 ...

Page 20: ...D HOLDER TMW8E027 OUTER CARTON TPC8E4659 TOP CUSHION TPD8E655 BOTTOM CUSHION TPD8E656 BATTERY PACK UM 3DJ 2P ANODE LEAD ZTUZAE550A RELAY RL801 TSE1885 1 THERMISTOR R802 232266296706 CRT SOCKET S351 0330550049 INSTRUCTION BOOKS GERMAN TQB8E2581A DUTCH FRENCH TQB8E2581BD ITALIAN SWEDISH TQB8E2581CF I C s AUDIO OUTPUT IC251 LA4282 R G B OUTPUT IC351 TDA6103Q N3 VERTICAL OUTPUT IC451 LA7845N VIDEO PRO...

Page 21: ...DE D3102 MTZJT 778 2C TRANSISTORS TRANSISTOR Q101 BC847B TRANSISTOR Q102 BC847B TRANSISTOR Q104 BC847B TRANSISTOR Q105 BC847B TRANSISTOR Q251 2SD1328STX TRANSISTOR Q252 2SD1328STX TRANSISTOR Q253 BC847B TRANSISTOR Q254 BC847B TRANSISTOR Q301 BC847B TRANSISTOR Q302 FMY4T148 TRANSISTOR Q303 BC847B TRANSISTOR Q304 FMY4T148 TRANSISTOR Q305 BC847B TRANSISTOR Q306 FMY4T148 TRANSISTOR Q351 2SA1767 TRANSI...

Page 22: ...RB JA45 ERJ6GEY0R00 0 1W 5 0 S M CARB JA55 ERJ6GEY0R00 0 1W 5 0 S M CARB JA54 ERJ6GEY0R00 0 1W 5 0 S M CARB JA52 ERJ6GEY0R00 0 1W 5 0 S M CARB JA5 ERJ6GEY0R00 0 1W 5 0 S M CARB JA49 ERJ6GEY0R00 0 1W 5 0 S M CARB JA48 ERJ6GEY0R00 0 1W 5 0 S M CARB JA37 ERJ6GEY0R00 0 1W 5 0 S M CARB JSE33 ERJ6GEY0R00 0 1W 5 0 S M CARB JA44 ERJ6GEY0R00 0 1W 5 0 S M CARB JA40 ERJ6GEY0R00 0 1W 5 0 S M CARB JA4 ERJ6GEY0...

Page 23: ...330 S M CARB R309 ERJ6GEYJ391 0 1W 5 390 S M CARB R310 ERJ6GEYJ102 0 1W 5 1K S M CARB R311 ERJ6GEYJ750 0 1W 5 75 S M CARB R312 ERJ6GEYJ331 0 1W 5 330 S M CARB R351 ERJ6GEYJ302 0 1W 5 3K S M CARB R352 ERJ6GEYJ302 0 1W 5 3K S M CARB R353 ERJ6GEYJ302 0 1W 5 3K S M CARB R354 ERJ6GEYJ102 0 1W 5 1K S M CARB R355 ERJ6GEYJ102 0 1W 5 1K S M CARB R356 ERJ6GEYJ102 0 1W 5 1K CARBON R357 ERDS1TJ114 0 5W 5 110K...

Page 24: ...ARB R914 ERJ6GEYJ822 0 1W 5 8K2 S M CARB R915 ERJ6GEYJ152 0 1W 5 1K5 S M CARB R916 ERJ6GEYJ391 0 1W 5 390 FUSIBLE R919 ERQ14AJW390 0 25W 5 39 FUSIBLE R920 ERQ14AJW390 0 25W 5 39 CARBON R921 ERD25TJ471 0 25W 5 470 CARBON R922 ERD25TJ393 0 25W 5 39K CARBON R923 ERD25TJ393 0 25W 5 39K CARBON R924 ERDS1FJ390 0 5W 5 39 S M CARB R925 ERJ6GEY0R00 0 1W 5 0 S M CARB R926 ERJ6GEY0R00 0 1W 5 0 CARBON R927 ER...

Page 25: ...0 1W 5 2K2 S M CARB R2413 ERJ6GEYJ562 0 1W 5 5K6 S M CARB R2414 ERJ6GEYJ473 0 1W 5 47K S M CARB R2415 ERJ6GEYJ682 0 1W 5 6K8 S M CARB R2416 ERJ6GEYJ472 0 1W 5 4K7 S M CARB R2417 ERJ6GEYJ821 0 1W 5 820 S M CARB R2418 ERJ6GEY0R00 0 1W 5 0 S M CARB R2419 ERJ6GEYJ470 0 1W 5 47 S M CARB R2420 ERJ6GEYJ332 0 1W 5 3K3 S M CARB R2421 ERJ6GEYJ472 0 1W 5 4K7 S M CARB R2422 ERJ6GEYJ103 0 1W 5 10K S M CARB R24...

Page 26: ...3108 ERJ6GEYJ153 0 1W 5 15K S M CARB R3402 ERJ6GEYJ750 0 1W 5 75 S M CARB R3403 ERJ6GEYJ101 0 1W 5 100 S M CARB R3404 ERJ6GEYJ242 0 1W 5 2K4 S M CARB R3405 ERJ6GEYJ104 0 1W 5 100K S M CARB R3406 ERJ6GEYJ301 0 1W 5 300 S M CARB R3407 ERJ6GEYJ123 0 1W 5 12K S M CARB R3408 ERJ6GEYJ472 0 1W 5 4K7 S M CARB R3409 ERJ6GEYJ750 0 1W 5 75 S M CARB R3601 ERJ6GEYJ101 0 1W 5 100 S M CARB R3602 ERJ6GEYJ101 0 1W...

Page 27: ...38 ECUV1H471JCX 50V 470pF S M CAP C639 ECUV1H332KBM 50V 470pF ELECT C701 ECA1HHG101B 50V 100µF S M CAP C702 ECUV1H103KBX 50V 10nF ELECT C703 ECEA1HGE100 50V 10µF FILM C704 ECQB1H223K 50V 22nF FILM C705 ECQB1H222J 50V 2 2nF FILM C804 ECQE2A474MWB 100V 470nF CERAMIC C806 ECKWNA101MBC 400V 100µF CERAMIC C807 ECKC2H472J 500V 4 7nF CERAMIC C808 ECKC2H472J 500V 4 7nF CERAMIC C809 ECKC2H472J 500V 4 7nF C...

Page 28: ...A1HM101GB 50V 100µF ELECT C2407 ECA1CM471GB 16V 470µF ELECT C2408 ECA1HM010GB 50V 1µF ELECT C2409 ECA1CM100GB 16V 10µF S M CAP C2410 ECUV1H152KBX 50V 10µF S M CAP C2411 ECUV1H221JX 50V 10µF S M CAP C2412 ECUV1H471KBX 50V 470pF S M CAP C2413 ECUV1H102KBX 50V 1nF S M CAP C2414 ECUV1H102KBX 50V 1nF S M CAP C2415 ECUV1H102KBX 50V 1nF S M CAP C2416 ECUV1H102KBX 50V 1nF ELECT C2418 ECA1CM220GB 16V 22µF ...

Page 29: ...034 ECUV1H271JCX 50V 270pF S M CAP C3035 ECUV1H271JCX 50V 270pF S M CAP C3101 ECUV1H104KBX 50V 270pF S M CAP C3102 ECUV1H104KBX 50V 270pF S M CAP C3103 ECUV1H561JCX 50V 560pF S M CAP C3104 ECUV1H561JCX 50V 560pF S M CAP C3105 ECUV1H561JCX 50V 560pF S M CAP C3106 ECUV1H561JCX 50V 560pF ELECT C3107 ECA1HM470GB 50V 47µF ELECT C3108 ECA1HM470GB 50V 47µF S M CAP C3111 ECUV1H391JCX 50V 390pF S M CAP C31...

Page 30: ...er Supply 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 All...

Page 31: ......

Page 32: ......

Page 33: ......

Page 34: ......

Page 35: ......

Page 36: ... I9 IC1104 C9 Q855 J5 D864 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 ...

Page 37: ...4 A7 Q353 G6 Q352 F6 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 32 H G F E D C B A 1 2 3 4 5 6 7 8 9 ...

Page 38: ...D2 Q2424 C1 Q2423 C1 Q2422 G6 Q2421 G6 Q2420 G5 Q2419 G5 Q2418 G5 Q2417 F4 Q2416 D2 Q2410 D2 Q2409 B4 Q2407 C4 Q2406 C4 Q2405 D2 Q2404 F1 Q2403 D2 Q2402 E1 Q2401 IC S C5 IC2404 A4 IC2403 E5 IC2402 G2 IC2401 DIODES E4 D2409 G5 D2408 F5 D2406 F5 D2405 A3 D2402 B4 D2401 33 1 2 3 4 5 6 A B C D E F G H ...

Page 39: ...NOTES 34 ...

Reviews:

No comments