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Panasonic TX-21MD4P, Service Manual

The Panasonic TX-21MD4P Service Manual is a comprehensive guide that ensures you maximize the functionality of your TX-21MD4P television. This user-friendly manual is available for free download at manualshive.com, providing detailed instructions and troubleshooting tips to enhance your viewing experience. Get your copy now and unlock the full potential of your Panasonic TV.

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Description

Cct Ref

Parts Number

Description

Cct Ref

Parts Number

DIODE                 

D854  

TVSRU2AMLFA5

DIODE   

D855  

FML22SLF610

DIODE   

D856  

RU4AMLF-M1

DIODE                 

D857  

MTZJT-775.1C

DIODE

D858  

MA165TA5

DIODE

D859  

MA165TA5

DIODE

D861  

MA165TA5

DIODE   

D862  

MTZJT-7736A

DIODE

D863  

MA165TA5

DIODE

D865  

MA165TA5

DIODE

D866  

MA165TA5

DIODE                

D867  

EK06-V0     

DIODE                

D868  

1N4150T-77  

DIODE                

D869  

1N4150T-77  

DIODE

D870  

MA165TA5

DIODE                

D871  

1N4150T-77  

DIODE                

D873  

MTZJT-775.6C

DIODE                

D874  

1SR124-4AT82

DIODE                

D875  

BZX79A75A26A

LED                   

D1051 SLR56UR3FLF 

DIODE

D1101 MA165TA5

DIODE

D1102 MA165TA5

DIODE   

D2101 MA723TA5

DIODE   

D2102 MA723TA5

DIODE   

D2103 MA723TA5

DIODE   

D2104 MA723TA5

DIODE                

D2105 MTZJT-778.2C

DIODE   

D2303 MA723TA5

DIODE   

D2304 MA723TA5

DIODE                

D3101 MTZJT-778.2C

DIODE                

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     

TRANSISTOR            

Q352  

2SA1767     

TRANSISTOR            

Q353  

2SA1767     

TRANSISTOR            

Q354  

BC857B      

TRANSISTOR            

Q451  

BC857B      

TRANSISTOR            

Q503  

2SD2398-M2  

TRANSISTOR            

Q551  

BU2508AXLB  

TRANSISTOR            

Q552  

2SC1473-RN

TRANSISTOR            

Q701  

BC857B      

TRANSISTOR            

Q850  

2SD1273PLB  

TRANSISTOR            

Q851  

BC857B      

TRANSISTOR        

Q852  

2SC1383-S   

TRANSISTOR            

Q853  

BC847B

TRANSISTOR            

Q854  

BC847B

TRANSISTOR            

Q855  

BC847B

TRANSISTOR            

Q856  

BC847B

TRANSISTOR            

Q857  

2SA1018QTA

TRANSISTOR            

Q950  

BC847B

TRANSISTOR        

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 BC847B

TRANSISTOR            

Q3006 BC847B

TRANSISTOR            

Q3007 BC847B

TRANSISTOR            

Q3401 BC847B

TRANSISTOR            

Q3402 BC847B

TRANSISTOR            

Q3601 BC847B

TRANSFORMERS

TRANSFORMER        

T501  

ETH19Y173AY 

F.B.T.               

T551  

ZTFL94002A  

TRANSFORMER        

T802  

ETP35KAN619U

COILS

COIL

L104  

EXCELSA35T

COIL                  

L106  

TLTACT100K  

COIL                 

L107  

TLTACT6R8K  

COIL                 

L301  

TLTACT4R7K  

COIL                 

L302  

TLTACT4R7K  

COIL

L451  

EXCELSA35T

COIL

L501  

EXCELSA35T

COIL                 

L553  

ELC08D682E  

COIL                 

L601  

TLTACT4R7K  

COIL                 

L602  

TLTACT4R7K  

COIL                 

L603  

TLTACT4R7K  

COIL                 

L604  

TLTACT4R7K  

COIL                 

L606  

TLTACT4R7K  

COIL                 

L607  

ELJFC2R2KF  

COIL                 

L701  

ELC10D822E  

COIL

L850  

EXCELSA35T

COIL

L851  

EXCELSA35T

COIL             

L852  

ELEIN470KA  

COIL

L853  

EXCELSA35T

COIL

L854  

EXCELSA35T

COIL

L855  

EXCELSA35T

COIL

L856  

EXCELSA39V

COIL                  

L1103 TLTACT100K  

COIL

L1104 EXCELSA35T

COIL                 

L1105 ELJFC2R2KF  

COIL                  

L2101 TLTACT100K  

COIL

L2103 EXCELSA35T

COIL                 

L2104 TLTACT4R7K  

COIL                 

L3001 ELEMV1R5MA  

COIL                 

L3002 ELEMV1R5MA  

COIL                 

L3003 ELEMV1R5MA  

COIL                 

L3004 ELEMV1R5MA  

COIL                 

L3005 ELEBR2R2KA  

COIL                 

L3006 ELEBR2R2KA  

COIL                 

L3007 TLTACT2R2K  

COIL                 

L3101 ELEBT6R8KA  

COIL                 

L3102 ELEBT6R8KA  

COIL    

L3401 ELESN2R2KA  

COIL    

L3402 ELESN2R2KA  

14

Summary of Contents for TX-21MD4P

Page 1: ...500mV rms 1kΩ AV1 IN Video 21 pin 1V p p 75Ω Audio 21 pin 500mV rms 10kΩ RGB 21 pin AV1 OUT Video 21 pin 1V p p 75Ω Audio 21 pin 500mV rms 1kΩ AV2 IN Video 21 pin 1V p p 75Ω Audio 21 pin 500mV rms 10kΩ S Video IN Y 1V p p 75Ω 21 pin C 0 3V p p 75Ω AV2 OUT Video 21 pin 1Vp p 75Ω Audio 21 pin 500mV rms 1kΩ Selectable output 21 pin AV3 IN Audio RCAx2 500mV rms 10kΩ Video RCAx1 1V p p 75Ω High Voltage...

Page 2: ...e receiver such as screw heads aerials connectors control shafts etc When the exposed metallic part has a return path to the chassis 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 LEAKAGE CURRENT HOT CHECK 1 Plug the AC cord directly into the AC outlet Do not use an isolation transformer for this check...

Page 3: ...SERVICE HINTS How to remove the rear cover 1 Remove the 9 screws as shown in Fig 2 LOCATION OF CONTROLS 3 SCREWS Fig 2 E BOARD Y BOARD FOCUS SCREEN H BOARD Fig 3 ...

Page 4: ...ch the TV on 2 Go into Service 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 TV 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 proces...

Page 5: ...ls at the front of the set at the same time pressing the STATUS button on the remote control and the screen will show If the CCU ports have been checked and found to be incorrect or not located then will appear in place of O K Service Aids To aid in the service of our current chassis there are a number of Service Aids which have been made available LUCI interface kit Linked Utility Computer Interf...

Page 6: ...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 7: ...al 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 ...

Page 8: ... 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 TX 28MD4P TX 25MD4P ONLY TX 28MD4P TX 25MD4P ONLY 8 IC3401 Q3402 8 6 3 VIDEO SWIT...

Page 9: ...R R 7 6 R 1 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 9 ...

Page 10: ...OCAL KEYS SWITCH MATRIX 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 10 Q3401 3 ...

Page 11: ... 4 2 1 3 1 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...

Page 12: ...PARTS LOCATION 12 NOTE The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List 17 18 12 11 9 10 16 15 4 7 3 14 8 13 5 1 6 2 ...

Page 13: ...12MRB 8V REGULATOR IC853 AN78L08TA LED RECEIVER IC1051 RPM 637CBRL MICRO PROCESSOR IC1101 SDA5450C47 EPROM IC1102 27C2001 G01 DIODE IC1104 MN1381 R TA DIODE IC1105 MN1381 T TA AUDIO PROCESSOR IC2101 MSP3410DPOB4 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 1SR...

Page 14: ...R Q853 BC847B TRANSISTOR Q854 BC847B TRANSISTOR Q855 BC847B TRANSISTOR Q856 BC847B TRANSISTOR Q857 2SA1018QTA TRANSISTOR Q950 BC847B TRANSISTOR 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 TR...

Page 15: ...0 ERJ8GEY0R00 125W 5 0 S M CARB JA23 ERJ8GEY0R00 125W 5 0 S M CARB R101 ERJ6GEY0R00 0 1W 5 0 S M CARB R102 ERJ6GEYJ103 0 1W 5 10K S M CARB R103 ERJ6GEYJ222 0 1W 5 2K2 S M CARB R104 ERJ6GEYJ332 0 1W 5 3K3 S M CARB R105 ERJ6GEYJ101 0 1W 5 100 S M CARB R106 ERJ6GEYJ681 0 1W 5 680 S M CARB R107 ERJ6GEYJ102 0 1W 5 1K S M CARB R111 ERJ6GEY0R00 0 1W 5 0 S M CARB R112 ERJ6GEYJ101 0 1W 5 100 S M CARB R113 ...

Page 16: ...GEYJ393 0 1W 5 39K S M CARB R710 ERJ6GEYJ273 0 1W 5 27K METAL R711 ERG1SJ101 1W 5 100 S M CARB R712 ERJ6GEYJ102 0 1W 5 1K SOLID R803 ERC12ZGK335D 0 5W 10 3M3 CARBON R805 ERD25TJ473 0 25W 5 47K CARBON R806 ERD25TJ100 0 25W 5 10 CARBON R807 ERD25TJ332 0 25W 5 3K3 CARBON R809 ERD25TJ681 0 25W 5 680 WOUND R810 ERW2PKR33 2W 20 R33 WOUND R811 ERW2PKR33 2W 20 R33 CARBON R812 ERD75TAJ825 0 75W 5 8M2 WOUND...

Page 17: ...RB R2120 ERJ6GEYJ222 0 1W 5 2K2 S M CARB R2302 ERJ6GEYJ104 0 1W 5 100K S M CARB R2303 ERJ6GEYJ101 0 1W 5 100 S M CARB R2304 ERJ6GEYJ471 0 1W 5 470 S M CARB R2305 ERJ6GEYJ102 0 1W 5 1K S M CARB R2306 ERJ6GEYJ103 0 1W 5 10K S M CARB R2308 ERJ6GEYJ104 0 1W 5 100K S M CARB R2309 ERJ6GEYJ101 0 1W 5 100 S M CARB R2310 ERJ6GEYJ471 0 1W 5 470 S M CARB R2311 ERJ6GEYJ102 0 1W 5 1K S M CARB R2312 ERJ6GEYJ103...

Page 18: ...IC C557 ECKC2H471J 500V 470pF ELECT C558 ECA1HHG471E 50V 470µF ELECT C560 ECA2GHG2R2B 400V 470µF ELECT C561 ECA1EHG102B 25V 470µF CERAMIC C562 ECKC2H101J 500V 100pF ELECT C563 ECA2EHG220B 250V 20µF ELECT C564 ECEA2AU2R2 100V 20µF FILM C565 ECQP1H273J 100V 20µF CERAMIC C566 ECKC2H471J 500V 470pF ELECT C567 ECA1EHG102B 25V 470pF CERAMIC C568 ECKC2H471J 500V 470pF CERAMIC C569 ECKC2H102J 500V 1nF S M...

Page 19: ...C2116 ECUV1H221JCX 50V 220pF S M CAP C2117 ECUV1H221JCX 50V 220pF S M CAP C2118 ECUV1H221JCX 50V 220pF S M CAP C2119 ECUV1H221JCX 50V 220pF S M CAP C2120 ECUV1H221JCX 50V 220pF ELECT C2121 ECA1CM100GB 16V 10µF ELECT C2122 ECJ2VF1H104Z 350V 100nF S M CAP C2123 ECUV1H221JCX 50V 220pF S M CAP C2124 ECUV1H070DTX 50V 70pF S M CAP C2125 ECUV1H470JCX 50V 47pF S M CAP C2126 ECUV1H070DTX 50V 70pF S M CAP C...

Page 20: ...7 METAL R377 ERQ1ABJP5R6S 0 5W 5 5R6 S M CARB R378 ERJ6GEY0R00 0 1W 5 0 S M CARB R379 ERJ6GEY0R00 0 1W 5 0 S M CARB R380 ERJ6GEY0R00 0 1W 5 0 WOUND R461 ERW2PK2R2 2W 10 2R2 METAL R702 ERQ12HJ220 0 5W 5 22 CAPACITORS ELECT C365 ECA1CM100GB 16V 10µF CERAMIC C551 ECKC3D561J 2KV 10µF FILM C555 ECWH15H822J 1500V 8 2nF FILM C556 ECQF4123JZH 400V 12nF FILM C559 ECWF2474JBB 500V 470nF ELECT C811 ECOS2GA15...

Page 21: ... TNP8EY012AF MISCELLANEOUS COMPONENTS OUTER CARTON TPC8E4685 TOP CUSHION TPD8E639 BOTTOM CUSHION TPD8E640 ANODE LEAD ZTUZAE550A I C s ERROR AMPLIFER IC850 SE140N EAROM IC1103 XGL2 01FP 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 22: ...CAP C906 ECUV1H471KBX 50V 470pF S M CAP C908 ECUV1H151JCX 50V 150pF CERAMIC C909 ECKC2H472J 500V 4 7nF CERAMIC C910 ECKC2H472J 500V 4 7nF S M CAP C911 ECUV1H151JCX 50V 150pF ELECT C912 ECEA2CU100 160V 10µF ELECT C913 ECA1HM101GB 50V 100µF ELECT C914 ECA1HM101GB 50V 100µF ELECT C916 ECEA2CGE100 160V 10µF 22 ...

Page 23: ...of printing and are subject to change without notice REMARKS a Do not touch the hot part or the hot and cold parts at the same time as you are liable to a shock hazard b Do not short circuit the hot and cold circuits as electrical components may be damaged c Do not connect an instrument such as an oscilloscope to the hot and cold circuits simultaneously as this may cause fuse failure Connect the e...

Page 24: ......

Page 25: ......

Page 26: ......

Page 27: ......

Page 28: ......

Page 29: ... Q856 F9 D865 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 T...

Page 30: ...354 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 H G F E D C B A 1 2 3 4 5 6 7 8 9 ...

Page 31: ...G5 D355 F6 D356 G5 D357 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 ...

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