Toshiba 27A41 Service Manual Download

Page: 26 / 36

Q1502

2SA1037AK

BUFFER

L1506

22uH

L1501

10uH

L1502

15uH

CP1501

6035B-06Z002-T

IC1501

TC90A45F

DIGITAL COMB FILTER

RECORD COLOR SIGNAL

RECORD LUMINANCE SIGNAL

TUNER VIDEO SIGNAL

C1520

470

6.3V

OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE

NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME

THE DC VOLTAGE AT EACH PART WAS MEASURED

WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST

WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.

NOTE:

R1516

R1510

27K

R1505

100

R1503

3.3K

R1506

820

R1509

180

R1512

R1513

1.2K

R1508

R1511

R1517

24K

R1518

560

R1501

100

R1504

R1502

6.8K

C1504

56P

C1503

100P

C1501

0.1 B

C1508

27P

C1507

0.01

C1509

0.01

C1512

0.01

C1506

0.01 B

C1516

100P

C1514

0.01

C1515

180P

C1513

0.01

C1510

0.01

C1526

47P

C1519

0.01

C1521

0.01

C1522

0.1

C1531

0.1 B

C1528

47P

C1505

0.1 B

W803

W807

W805

W802

W801

C1511

0.1

50V

C1525

3.3

50V

C1517

100

16V

Q1504

2SC2412K

BUFFER

Q1501

2SC2412K

BUFFER

Q1503

2SC2412K

BUFFER

L1503

820uH

DIGITAL COMB FILTER SCHEMATIC DIAGRAM

GND

FSC

Y IN

C IN

P.CON+5V

FROM/TO

MONITOR V.OUT

5.4

5.0

1.1

1.7

PCB330
TEAA70

VRB

VRT

ADIN

BIAS2

BIAS3

VFIL

CKIN

OUT

BIAS1

TEST

KILLER

2.4

3.0

2.6

5.5

5.4

3.8

1.4

4.2

3.6

2.2

2.5

2.1

2.4

4.4

5.0

2.8

4.4

(COMB PCB)

2.5

1.9

Summary of Contents for 27A41

Page 1: ...SERVICE MANUAL COLOR TELEVISION FILE NO 050 200109 27A41 ...

Page 2: ...t which has the same character Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark the designated parts must be used 4 PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING There are parts which use the insulation material such as a tube or tape for safety or which are assembled in the condition that these do n...

Page 3: ... Receive CH Destination Ohers Tuning System F Synth Input Impedance VHF UHF 75 ohm 2 69 4A A 5 A 1 CH Coverage A I J W W 1 W 84 Intermediate Picture FP 45 75MHz Frequency Sound FS 41 25MHz FP FS 4 50MHz Preset CH No Stereo Dual TV Sound Yes Tuner Sound Muting Yes G 3 Power Power Source AC 120V AC 60Hz DC Power Consumption at AC 120 W at AC 120 V 60 Hz Stand by at AC 4 W at AC 120 V 60 Hz Per Year ...

Page 4: ...eam DVD DTV Yes Control Level Yes Volume Yes Brightness Yes Contrast Yes Color Yes Tint NTSC Only Yes Sharpness Yes Tuning No Bass Yes Treble Yes Balance Yes Back Light No Stereo Audio Output SAP Yes Video Yes Color Stream Yes Channel TV Cable Yes CH Label Yes Sleep Timer Yes Sound Mute Yes P in P No V chip Rating Yes G 8 OSD Language English French Spanish OSD Language Setting English G 9 Clock a...

Page 5: ...n Yes Volume Up Yes Volume Down Yes TV Caption Text Yes CH1 CH2 Yes TV Video TV AV Yes CH RTN CH ENT Quick View Yes Sleep Yes RE Call Call Yes Reset Yes Menu Enter Yes Mute Yes Exit Yes MTS Audio Select Yes Fav Up Yes Fav Down Yes Set No Set No P in P Keys PIP No Swap No Locate No Still No 2 Tuner PIP CH Up No P in P Only PIP CH Down No Multi Brand Keys CH Up VCR Yes CH Down VCR Yes Pause Still Ye...

Page 6: ...s FBT Leak Test Protect Yes Favorite CH Yes 1 Tuner P in P No 2 Tuner P in P No G 12 Accessories Owner s Manual Language English W Warranty Yes Remote Control Unit Yes Rod Antenna No Poles Terminal Loop Antenna No Terminal U V Mixer No DC Car Cord Center No Guarantee Card No Warning Sheet No Circuit Diagram No Antenna Change Plug No Service Facility List No Important Safety Instruction Yes Dew AHC...

Page 7: ... x 2 S Input Yes Euro Scart No Color Stream RCA x 3 Diversity No Ext Speaker No DC Jack 12V Center No VHF UHF Antenna Input F Type AC Outlet No G 14 Set Size Approx W x D x H mm 650 x 500 5 x 560 G 15 Weight Net Approx 35kg 77 1 lbs Gross Approx 38Kg 83 7 lbs G 16 Carton Master Carton No Content Sets Material Dimensions W x D x H mm x x Description of Origin No Gift Box Yes Material Double Brown D...

Page 8: ... Flip up the sides of the Rubber Cap in the direction of the arrow and remove one side of the support Refer to Fig 1 2 2 DISASSEMBLY INSTRUCTIONS GND on the CRT Screwdriver Alligator Clip Support CRT GND on the CRT Rubber Cap CRT Support Fig 1 1 Fig 1 2 3 After one side is removed pull in the opposite direction to remove the other NOTE Take care not to damage the Rubber Cap INSTALLATION 1 Clean th...

Page 9: ...r FIG 1 Initial setting content of MEMORY IC POWER ON total hours 16 x 16 x 16 x thousands digit value 16 x 16 x hundreds digit value 16 x tens digit value ones digit value NOTE FOR THE REPLACING OF MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC the following steps should be taken to ensure correct data settings while making reference to TABLE 1 Tabl...

Page 10: ...es Receive the white 100 signal from the Pattern Generator Using the adjustment control set the brightness and contrast to normal position Activate the adjustment mode display of Fig 1 1 and press the channel button 13 on the remote control to select R BIAS Using the VOL UP DOWN button on the remote control adjust the R BIAS Press the CH UP DOWN button on the remote control to select the G DRV B D...

Page 11: ...ivate the adjustment mode display of Fig 1 1 and press the channel button 31 on the remote control to select SEP1 Press the VOL UP DOWN button on the remote control until the output of L CH and R CH become minimum Press the CH UP button once the set to SEP2 mode Press the VOL UP DOWN button on the remote control until the output of L CH and R CH become minimum Press the CH DOWN button once the set...

Page 12: ...el button 20 on the remote control to select TINT Press the VOL UP DOWN button on the remote control until the waveform becomes as shown in Fig 2 2 Connect the oscilloscope to TP804 Press the CH DOWN button 3 times to set to SUBCONT mode Press the VOL UP DOWN button on the remote control until the red color level is adjusted to 105 5 of the white level Refer to Fig 2 3 Receive the color bar patter...

Page 13: ...between the deflection yoke and CRT funnel to fix the deflection yoke Refer to Fig 3 2 b R G B R G B Fig 3 2 a WEDGE WEDGE WEDGE WEDGE POSITION Fig 3 2 b R G B R G B Receive the crosshatch pattern from the color bar generator Combine red and blue of the 3 color crosshatch pattern on the center of the screen by adjusting the pair of 4 pole magnets Combine red blue magenta and green by adjusting the...

Page 14: ...MAJOR COMPONENTS LOCATION GUIDE FOCUS VOLUME SCREEN VOLUME FB401 MAIN PCB VR502 CRT PCB J801 TP804 TP806 T501 TP002 J702 J701 J703 J704 J203 TP901 TP001 VR401 TU001 ...

Page 15: ... IC1501 TC90A45F 180V 25V VIDEO3 LINE2 YUV IN Y S INPUT IF 11 SCL 4 SDA 5 39 37 SCL SDA SCL 24 SDA 25 18 19 18 17 12 7 2 5 14 7 19 2 24 23 21 22 30 32 31 25 22 20 27 29 9 6 3 5 2 4 1 7 14 15 13 8 10 C Y C L R V 4 1 9 12 3 5 T501 13 15 4 34 28 16 15 14 42 47 55 38 31 8 6 11 51 14 6 3 HV 1 7 9 F 10 S 1 5 6 7 R G B DY 7 F 10 L R V L R V V OUT FBP IN H OUT ABCL B OUT G OUT R OUT C IN CVBSLNT IN IF DET...

Page 16: ...813 C808 D809 D807 D808 W001 W804 W803 W807 L1503 CP1501 C1517 C1520 C1511 L1501 L1502 C1525 W802 L1506 W801 W805 R1503 R1504 R1502 Q1501 C1519 C1504 R1505 R1501 R1506 C1510 C1521 C1515 C1516 C1514 R1517 R1510 R1518 R1516 Q1504 C1506 C1507 C1509 C1508 C1512 Q1503 R1511 R1512 C1501 C1528 IC1501 C1513 R1513 Q1502 R1508 C1503 C1526 C1505 C1531 C1522 R1509 PRINTED CIRCUIT BOARDS CRT SOLDER SIDE COMB I...

Page 17: ...103 Q508 Q510 C529 IC502 C408 R413 R414 R428 C431 R430 R422 W105 R406 T401 W827 HS502 C501 C527 C531 D 5 0 5 W106 W107 W108 D512 D514 VR502 R554 B504 D510 C517_1 D509 C542 C521 C523 R527 C539 Q512 Q501 R537 C533 R553 D519 W110 Q507 R508 D508 D516 Q504 R515 W111 RY501 C506 CP502 W807 R509 IC504 D503 D531 D504 D529 CP504 T501 R502 B505 D507 IC501 D521 W112 HS501 D518 B502 C510 W113 R506 W114 C507 R5...

Page 18: ...R615 R623 R612 R610 R614 C618 C629 C222 C614 R632 C609 R602 R205 C605 R750 R747 C606 C607 R603 C638 C617 R607 C626 C632 C631 C623 R604 R636 Q603 R435 R751 R719 R701 Q701 C723 R722 R721 R740 Q107 C738 R715 C747 C745 C746 R726 Q709 C744 C727 C726 C743 R713 C731 R724 R725 C706 C734 C750 R714 C728 C720 C737 R716 C730 C748 C722 C721 C712 C739 C708 C707 R752 C1001 C1002 R1009 Q1001 R1013 C1010 C1012 R10...

Page 19: ...R122 4 7K R123 4 7K R126 2 7K R107 1K 1 4W R110 10K R109 2 2K R108 2 2K R144 10K R139 1K 1 4W R141 1K 1 4W R140 1K R001_1 2 7K 1 4W DANS LA NOMENCLATURE DES PIECES N UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETANT LES PIECES REPAREES PAR UN ATTENTION DESCRIBED IN PARTS LIST ONLY CRITICAL FOR SAFETY USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION THE DC VOLTAGE AT EACH PART ...

Page 20: ...68 R217 6 8K R638 1K R636 2 2K R907 100 1 4W R908 100 1 4W R906 220K R618 220K R207 1 5K R623 10K R615 1 8K R608 270 1 4W R601 180K R614 2 7K R612 2 7K R610 2 7K R619 33K R211 2 2K R214 270 R602 1K R212 3 3K R750 75 R747 75 R603 3 3K R607 2 2K R605 10K 1 4W R604 470 R202 1K R201 1K R215 470 R204 220 R205 100 R617 100 R616 100 R613 100 R611 100 R609 100 R209 33K R904 470 R905 470 R632 150K R624 680...

Page 21: ...00V MKT C415 330P 500V B C418 0 47 200V FHS C438 0 001 B C439 0 001 B C416 470P 500V B C419 0 001 500V B C411 10P 500V SL C402 0 0022 500V B C405 560P CH C431 0 001 500V B R430 68K 1 2W R443 68K 1 2W R152 1K 1 4W R419 1K R435 2 2K R408 220 1 2W R429 680 1 2W R425 680 1 2W R421 680 1 2W R409 680 1 2W R437 1 1 2W R404 180 1 2W R432 8 2K 1 2W R403 330 R406 4 7K 1 2W R412 8 2K R424 2 2K 1 2W R415 820 ...

Page 22: ...07 1SS133 D516 1SS133 D502 1N4005 EIC D503 1N4005 EIC C542 470 50V YK C539 2 2 100V MHE C533 10 16V KA C501 1000 35V YK C510 100 35V MHE D513 MTZJ5 6B D528 MTZJ5 6B W801 W817 C534 0 0012 2KV YR C520 0 0022 500V B C541 0 0022 500V B C513 470P 250V KH C522 0 0033 250V KH C535_1 0 0022 2KV YR C517_1 0 0022 2KV YR C518 0 0022 500V B C516 100P 500V B C526 0 001 B C512 0 001 B C524 0 001 B C509 0 0056 B...

Page 23: ...10K R321 4 7K R322 5 6K R324 1 8K R1013 10K DANS LA NOMENCLATURE DES PIECES N UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETANT LES PIECES REPAREES PAR UN ATTENTION DESCRIBED IN PARTS LIST ONLY CRITICAL FOR SAFETY USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDI...

Page 24: ...C722 1 B C720 33P CH C743 0 0056 B C744 0 0056 B C726 0 0056 B C727 0 0056 B C748 0 1 B C750 1 B C742 0 0056 B C740 0 0056 B C706 8P CH C731 0 01 B C723 150P CH C753 33P CH R716 470 R752 1K R751 1K R748 3 9K 1 4W R717 470 1 4W R715 1K R749 3 9K 1 4W R711 3 9K 1 4W R723 470 1 4W R741 75 1 4W R713 68 R702 75 1 4W R708 75 1 4W R707 75 1 4W R705 75 1 4W R734 10K 1 4W R714 470 R728 3 9K 1 4W R738 220K ...

Page 25: ...W R801 100 1 4W R814 220 1 4W R809 100 1 4W C804 390P B C805 390P B C806 470P B C815 330P B C820 0 001 500V B C808 0 001 2KV B C813 0 0022 M C823 330P B W804 C809 2 2 250V YK D801 1SS133 D802 1SS133 D803 1SS133 D808 1SS133 D809 1SS133 D807 1SS133 Q801 2SC2621 RED AMP Q810 2SC1740SP RED AMP Q811 2SC1740SP GREEN AMP Q803 2SC2621 BLUE AMP Q812 2SC1740SP BLUE AMP Q802 2SC2621 GREEN AMP R804 12K 2W R80...

Page 26: ...509 180 R1512 1K R1513 1 2K R1508 47 R1511 1K R1517 24K R1518 560 R1501 100 R1504 1K R1502 6 8K C1504 56P CH C1503 100P CH C1501 0 1 B C1508 27P CH C1507 0 01 B C1509 0 01 B C1512 0 01 B C1506 0 01 B C1516 100P CH C1514 0 01 B C1515 180P CH C1513 0 01 B C1510 0 01 B C1526 47P CH C1519 0 01 B C1521 0 01 B C1522 0 1 B C1531 0 1 B C1528 47P CH C1505 0 1 B W803 W807 W805 W802 W801 C1511 0 1 50V KA C15...

Page 27: ...v 2 0V 50µs div 1 0V 5ms div 2 0V 50ns div 2 0V 50µs div 200mV 10µs div 500mV 10µs div 200mV 10µs div 7 8 15 1 2 3 4 5 6 9 10 11 12 13 14 1 0V 20µs div WAVEFORMS MICON TUNER CHROMA IF The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTE ...

Page 28: ...ing waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTE WAVEFORMS 50V 20µs div 19 1 0V 2ms div 1 0V 2ms div 20mV 1ms div 22 23 25 20mV 1ms div 24 500mV 1ms div 26 200mV 20µs div 500mV 1ms div 100mV 10µs div 27 28 30 200mV 20µs div 29 AV DEFLECTION ...

Page 29: ... 1 0V 1ms div 1 0V 1ms div 32 33 1 0V 10µs div 34 50V 10µs div 37 50V 10µs div 50V 10µs div 38 39 The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTE CRT ...

Page 30: ...1 201 111 204 204 108 J801 PCB110 CRT PCB 105 203 V801 203 203 203 L503 114 114 114 101 107 106 109 113 110 204 204 204 PCB170 VIDEO JACK PCB 112 SP1001 202 104 205 113 206 206 205 205 206 206 PCB330 COMB PCB PCB010 MAIN PCB TU001 FB401 102 204 104 ...

Page 31: ...TION 113 AD300767 735WPB0134 BUTTON ASS Y 114 AD300768 762WPA0009 HOLDER CRT WIRE 201 BZ710036 8117540B04 SCREW TAPPING B0 TRUSS 4x20 202 AD300769 8117330A04 SCREW TAPPING B0 FLAT 3x10 203 BZ710033 8111J50D05 SCREW TAPPING A GW22 5x35 204 BZ710031 8110630A04 SCREW TAP TITE P BRAZIER 3x10 205 BZ710239 8109I30A04 SCREW TAP TITE B WH7 3x10 206 BZ710019 8109630802 SCREW TAP TITE B BRAZIER 3x8 AD300770...

Page 32: ...713K CC 0 001 UF 2KV B C504 BZ110074 E50HU5010M CE 1 UF 50V C505 BZ110145 P2472B104M CMP 0 1 UF 275V PHE840 C506 BZ110145 P2472B104M CMP 0 1 UF 275V PHE840 C507 BZ110012 E51CGC471M CE 470 UF 200V C508 AD300726 CB3LB0MQ2K CC 470 PF 250V C510 BZ110018 E5EZT4101M CE 100 UF 35V C513 AD300726 CB3LB0MQ2K CC 470 PF 250V C517 BZ110115 C0JLYR7H3K CC 0 0022UF 2KV YR C519 AD300726 CB3LB0MQ2K CC 470 PF 250V C...

Page 33: ...SS133T 77 D613 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D614 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D615 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D711 BZ410066 D97U06R21B DIODE ZENER MTZJ6 2B T 77 D801 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D802 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D803 BZ410006 D1VT001330 DIODE SILICON 1SS133T 77 D807 BZ410006 D1VT001330 DIODE SILICON ...

Page 34: ...L501 AD300402 029X000098 COIL LINE FILTER SS28H 20075 L503 AD300735 028R270008 COIL DEGAUSS 8R270008 L601 BZ310003 021673470K COIL 47 UH L602 BZ310002 021673101K COIL 100 UH L603 BZ310040 02167F470J COIL 47 UH L604 BZ310040 02167F470J COIL 47 UH L701 BZ310005 02167D101K COIL 100 UH L703 BZ310040 02167F470J COIL 47 UH L802 AD300123 021673151K COIL 150 UH L803 AD300123 021673151K COIL 150 UH L804 AD...

Page 35: ...2 06CH243001 CORD CONNECTOR CH243001 CP1001 AD300097 069W14T299 CONNECTOR PCB SIDE TID X04P Z1 CP1501 AD300102 069J160260 CONNECTOR PCB SIDE 6035B 06Z002 T CP702A AD300752 069S250629 CONNECTOR PCB SIDE A2001WV2 5P CP702B BZ614276 067U005049 WIRE HOLDER B2013H02 5P CP801A BZ614273 067U010049 WIRE HOLDER B2013H02 10P CUS011 BZ710279 800WFAA006 CUSHION A or BZ710001 800WF00004 CUSHION A EL001 BZ61404...

Page 36: ...TOSHIBA AMERICA CONSUMER PRODUCTS INC HEAD OFFICE 82 TOTOWA ROAD WAYNE NEW JERSEY 07470 U S A ...

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