Panasonic TX-21AS1P Service Manual Download Page 1

Colour Television

TX-21AS1P

EURO-4 Chassis

SPECIFICATIONS

Power Source:

220-240V a.c., 50Hz

Power Consumption:

106W

Stand-by Power
Consumption:

1,4W

Aerial Impedance:

75

 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/Audio
Video

38,9MHz

Audio

33,16MHz, 33,4MHz
32,4MHz (A2 Stereo)
33,05MHz (NICAM)
32,66MHz, 32,4MHz (Czech Stereo)

Colour

34,47MHz (PAL)
34,5MHz, 34,65MHz (SECAM)

Terminals:
AUDIO MONITOR OUT

Audio (RCAx2) 500mV rms 1k

AV1 IN

Video (21 pin)

1V p-p 75

Audio (21 pin)

500mV rms 10k

RGB (21 pin)

AV1 OUT

Video (21 pin)

1V p-p 75

Audio (21 pin)

500mV rms 1k

AV2 IN

Video (21 pin) 

1V p-p 75

Audio (21 pin) 

500mV rms 10k

S-Video IN

Y: 1V p-p 75

(21-pin)

C:0,3V p-p 75

AV2 OUT

Video (21 pin) 

1V p-p 75

Audio (21 pin)

500mV rms 1k

Selectable output (21 pin)

AV3 IN

S-Video IN

Y: 1V p-p 75

(4-pin)

C: 0,3V p-p 75

Audio (RCAx2)

500mV rms 10k

Video (RCAx1)

1V p-p 75

High Voltage:

28kV 

±

 1kV

Picture Tube:

A51LSK955X05

51cm

Audio Output:

2 x 15W (Music Power)
8

 Impedance

Headphones:

8

 Impedance

3,5mm

Accessories
supplied :

Remote Control
2 x R6 (UM3) Batteries

Dimensions:
Height:

470mm

Width:

550mm

Depth:

480mm

Net weight:

25kg

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.

ORDER No. SM-00044

Summary of Contents for TX-21AS1P

Page 1: ...kΩ 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 1V p p 75Ω Audio 21 pin 500mV rms 1kΩ Selectable output 21 pin AV3 IN S Video IN Y 1V p p 75Ω 4 pin C 0 3V p p 75Ω Audio RCAx2 500mV rms 10kΩ ...

Page 2: ...lic cabinet part on the 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 a c cord directly into the a c outlet Do not use an isolation tr...

Page 3: ...SERVICE HINTS How to remove the rear cover 1 Remove the 8 screws as shown in Fig 2 LOCATION OF CONTROLS 3 Fig 2 SCREWS SCREWS M Board Y Board E Board H Board Focus Screen Fig 3 ...

Page 4: ...5 3 Release the respective wiring clips and move the EHT lead around to the left side of the CRT neck 4 Elevate the chassis as shown in Fig 6 5 Using a speaker screw screw the chassis frame into the top speaker fixing rib B as shown in Fig 6 6 After servicing replace the speaker and ensure all wiring is returned to its original position before returning the receiver to the customer 4 A Fig 5 Fig 4...

Page 5: ...n on the remote control To exit Self Check switch off the TV set at the power button 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 Interface Part number TZS6EZ002 This co...

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: ...mplitude H Amp 055 Optimum setting Vert Amplitude V Amp 054 Optimum setting EW amplitude E W Amp1 128 Optimum setting EW amplitude E W Amp2 006 Optimum setting Trapezium comp Trapez 1 047 Optimum setting Trapezium comp Trapez 2 128 Optimum setting Vertical Linearity V Lin 006 Optimum setting Vertical Symmetry V Sym 002 Optimum setting DVCO DVCO 005 Receive a PAL Colour Bar Pattern For DVCO alignme...

Page 8: ... 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 E15 6 8 H1 H3 E61 1 1 6 8 H BOARD IC3401 8 6 3 VIDEO SWITCHING 2 4 2 4 Q3201 Q3202 Q3203 Q3204 Q3206 Q3205 Q3207 M2 E17 6 6 AV3 C Y M BOARD M3 4 2...

Page 9: ... 6 L IN 47 ANA_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 E BOARD AUDIO PROCESSOR Q2303 Q2301 AUDIO MONITOR OUT Q2302 22 DACA_L Q2304 21 DACA_R E16A 1 M1 1 2 2 AV3 R 6 R 4 L HEADPHONE 7 R 5 L M4 1 M5 3 E17 10 M2 10 8 8 M BOARD IC251 Q2102 Q2103 5 R R 7 Q252 Q251 2 L L 11 AUDIO OUTPUT L ...

Page 10: ... 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 48 49 SCL SDA H BOARD E BOARD 5 IC3401 VIDEO SWITCHING IC2101 8 7 4 AUDIO PROCESSOR MICRO PROCESSOR VIDEO PROCESSOR IC1103 6 5 EAROM Q3401 Q1051 M1 8 E16A 8 7 7 M2 5 E17 5 IC1061 REMOTE CONTROL RECEIVER D1061 Q1062 LOCAL KEYS SWITCH MATRIX M ...

Page 11: ... 27V 150V 29V 7V 15V 5V D867 Q852 Q854 Q855 1 D805 R805 R814 IC850 1 2 D862 R854 33V 16 IC1104 2 RESET MICRO PROCESSOR AUDIO PROCESSOR VIDEO PROCESSOR EPROM EAROM IC1105 2 RESET REG 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 E1 4 1 E2 2 1 R802 Line Filter E62 1 H3 2 IC351 6 RGB OUTPUT Degauss Coil Mains In M1...

Page 12: ...PARTS LOCATION 12 NOTE The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List 20 4 16 11 2 7 1 10 8 6 5 18 17 9 19 13 12 15 3 14 22 21 ...

Page 13: ...INSTRUCTION BOOKS RUSSIAN BULGARIAN TQB8E2979LM POLISH HUNGARIAN TQB8E2979PQ CZECH ENGLISH TQB8E2979RU I C s AUDIO OUTPUT IC251 LA4282 R G B OUTPUT IC351 TDA6103Q N3 VERTICAL OUTPUT IC451 LA7845N VIDEO PROCESSOR IC601 VDP3112BPPC2 E W CORRECTION IC701 TEA2031A POWER SUPPLY IC801 STRF6654LF57 ERROR AMPLIFIER IC850 SE130N 12V REGULATOR IC851 AN78M12 LB 8V REGULATOR IC853 AN78L08TA LED RECEIVER IC106...

Page 14: ... Q352 2SA1767 TRANSISTOR Q353 2SA1767 TRANSISTOR Q354 BC857B TRANSISTOR Q451 BC857B TRANSISTOR Q503 2SD2398 M2 TRANSISTOR Q551 2SC5517000LB TRANSISTOR Q552 2SC1473ATA TRANSISTOR Q701 BC857B TRANSISTOR Q850 2SD2396K M3 TRANSISTOR Q851 BC857B TRANSISTOR Q852 2SD1858TV2 TRANSISTOR Q853 BC847B TRANSISTOR Q854 BC847B TRANSISTOR Q855 BC847B TRANSISTOR Q856 BC847B TRANSISTOR Q857 2SA1018QTA TRANSISTOR Q9...

Page 15: ...ERJ6GEY0R00 0 1W 5 0 S M CARB JA43 ERJ8GEY0R00 125W 5 0 S M CARB JA44 ERJ6GEY0R00 0 1W 5 0 S M CARB JA45 ERJ6GEY0R00 0 1W 5 0 S M CARB JA46 ERJ8GEY0R00 125W 5 0 S M CARB JA47 ERJ6GEY0R00 0 1W 5 0 S M CARB JA48 ERJ6GEY0R00 0 1W 5 0 S M CARB JA49 ERJ6GEY0R00 0 1W 5 0 S M CARB JA50 ERJ8GEY0R00 125W 5 0 S M CARB JA51 ERJ8GEY0R00 125W 5 0 S M CARB JA52 ERJ6GEY0R00 0 1W 5 0 S M CARB JA53 ERJ8GEY0R00 125...

Page 16: ...1K S M CARB R464 ERJ6GEYJ182 0 1W 5 1K8 S M CARB R465 ERJ6GEYJ391 0 1W 5 390 S M CARB R502 ERJ6GEYJ511 0 1W 5 510 CARBON R506 ERD25TJ560 0 25W 5 56 METAL R507 ERG2FJ391H 2W 5 390 CARBON R509 ERDS1TJ152 0 5W 5 1K5 CARBON R510 ERDS1FJ152 0 5W 5 1K5 METAL R553 ERG1SJ152 1W 5 1K5 METAL R554 ERG1SJ101 1W 5 100 METAL R555 ERQ12HKR33 0 5W 5 R33 CARBON R558 ERDS1TJ124 0 5W 5 120K METAL R559 ERQ12HKR33 0 5...

Page 17: ...RB R1141 ERJ6GEYJ471 0 1W 5 470 S M CARB R1145 ERJ6GEYJ101 0 1W 5 100 S M CARB R1146 ERJ6GEYJ101 0 1W 5 100 S M CARB R1147 ERJ6GEYJ101 0 1W 5 100 S M CARB R1148 ERJ6GEYJ101 0 1W 5 100 S M CARB R1149 ERJ6GEYJ223 0 1W 5 22K S M CARB R1151 ERJ6GEYJ101 0 1W 5 100 S M CARB R1152 ERJ6GEYJ101 0 1W 5 100 S M CARB R1156 ERJ6GEYJ101 0 1W 5 100 S M CARB R1157 ERJ6GEYJ103 0 1W 5 10K S M CARB R1158 ERJ6GEYJ101...

Page 18: ...301 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 5 100 S M CARB R3603 ERJ6GEYJ101 0 1W 5 100 S M CARB R3604 ERJ6GEYJ101 0 1W 5 100 S M CARB R3605 ERJ6GEYJ101 0 1W 5 100 S M CARB R3606 ERJ6GEYJ101 0 1W 5 100 S M CARB R3607 ERJ6GEYJ472 0 1W 5 4K7 S M CA...

Page 19: ... 1 5nF CERAMIC C850 ECKC3D471JB 2KV 470pF ELECT C851 ECA2CM221E 160V 220µF ELECT C852 ECA2CHG101E 160V 100µF CERAMIC C853 ECKC2H471J 500V 470pF ELECT C854 ECA1EM102GB 25V 100µF CERAMIC C855 ECKC2H471J 500V 470pF ELECT C856 ECA1AHG222B 10V 2200µF CERAMIC C857 ECKC2H471J 500V 470pF ELECT C858 ECEA1HGE102 50V 1000µF ELECT C859 ECJ2VF1H104Z 350V 100nF ELECT C860 ECEA1HU101 50V 100µF ELECT C862 ECJ2VF1...

Page 20: ...C3026 ECUV1H561JCX 50V 560pF ELECT C3027 ECJ3VB1C474K 3 5KV 470nF S M CAP C3028 ECUV1H222JCX 50V 2 2nF ELECT C3029 ECEA1HU101 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 100nF S M CAP C3102 ECUV1E104KBX 25V 100nF S M CAP C3111 ECUV1H391JCX 50V 390pF S M C...

Page 21: ...g 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 earth of th...

Page 22: ......

Page 23: ......

Page 24: ......

Page 25: ......

Page 26: ...3 IC2101 H8 Q857 J4 D866 I9 IC1105 F7 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 IC853 J9 Q701 J5 D859 H5 IC852 I10 Q552 N3 D858 E5 IC851 G5 Q551 K1 D857 E5 IC850 H4 Q503 I2 D856 F4 IC801 G2 Q451 F8 D855 F4 IC701 K5 Q305 K9 D854 G4 IC601 L7 Q304 K9 D853 H3 IC451 L5 Q303 K9 D852 I4 IC251 D6 Q...

Page 27: ...5 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 26 ...

Page 28: ...1 B8 Q1062 B8 Q1900 B1 Q1901 B1 Q3201 B2 Q3202 B2 Q3203 B2 Q3204 B2 Q3205 B2 Q3206 B2 Q3207 B2 Q3208 B2 Q3209 B2 DIODES D1055 C8 D1061 C8 D1900 C1 D3201 B4 D3202 B4 D3203 B4 IC S IC1061 C8 IC1900 B1 IC1901 B1 C B A 1 2 3 4 5 6 7 8 9 27 ...

Page 29: ...H BOARD TNP8EH002 TRANSISTORS Q3401 C3 Q3402 A2 I C S IC3401 C2 1 2 3 A C B 28 ...

Page 30: ...NOTES 29 ...

Page 31: ...NOTES 30 ...

Page 32: ......

Page 33: ......

Page 34: ...2 13 24 3 14 25 4 15 26 5 16 27 6 17 28 7 18 29 8 19 30 9 20 31 10 21 32 11 22 33 12 23 34 35 36 37 38 39 40 ...

Reviews: