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Toshiba 29AS42, Service Manual

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Toshiba 29AS42 Service Manual Download Page 25

A

B

C

D

E

F

G

H

A

B

C

D

E

F

G

H

2

1

3

4

5

6

7

8

2

1

3

4

5

6

7

8

IC303

M62420SP

TONE CONTROL IC

1

10

11

12

13

14

15

16

17

18

19

2

20

3

4

5

6

7

8

9

SPEAKER

SP1001

S0509F12-C

W/CONECTOR.2SPEAKER

IC1001

AN5276

SOUND AMP IC

1

10

11

12

2

3

4

5

6

7

8

9

AUDIO SIGNAL

HS1001

763WAA0215

CP1001

A2502WV2-4P

1

2

3

4

C304_1

22

16V

KANP

C305_1

22

16V

KANP

L301

47uH

L302

22uH

S801Y

S801X

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:

DESCRIBED IN PARTS LIST ONLY

CRITICAL FOR SAFETY,USE ONES

ARE

SINCE THESE PARTS MARKED BY

CAUTION:

DANS LA NOMENCLATURE DES PIECES

N’UTILISER QUE CELLS DECRITES

DANGEREUSES AN POINT DE VUE SECURITE

ETANT

LES PIECES REPAREES PAR UN

ATTENTION:

R1010

10K

R1011

10K

R1013

10K

R324

1.8K

R321

4.7K

R325

1.8K

R327

100K

R328

100

R326

100

R319

4.7K

R1009

10K

R314

2.7K

R320

2.7K

R322

1.5K

R323

1.5K

R1003

330

R1004

330

C330

0.022 B

C333

0.47 B

C331

0.022

B

C332

0.47

B

C334

0.033 B

C335

0.033 B

C339

0.01 B

C338

0.001

B

C336

100P

CH

C337

100P

CH

C325

0.01

B

C1006

220P

B

W809

C1011

100

25V

YK

C329_1

22

16V

KA

C328_1

22

16V

KA

C326

47

16V

YK

C303

47

16V

YK

C1009

2200

16V

YK

C1003

1000

25V

YK

C1004

2200

16V

YK

C1007

22

16V

KA

C1008

2.2

50V

KA

C315

220

16V

YK

Q1001

KRC111SRTK

MUTE

CAUTION: DIGITAL TRANSISTOR

SW_AUDIO-R

SW_AUDIO-L

SCL

SDA

TV_MUTE

P.CON+5V

P.CON+9V

SOUND+B

GND

SOUND_GND

FROM POWER

FROM AV

FROM/TO MICON/TUNER

(L)

(R)

8 OHM 2.5W

1

2

3

4

8 OHM 2.5W

VR6

S8

TONE

AMP1

AMP2

TONE

6.5K

S5

S3

S6

S4

S7

VR5

VR3

S1

S2

1.8K

1.8K

VR1

VR2

VR4

6.5K

6.5K

6.5K

VOLAMP2

SIMAMP2

VOLAMP1

SIMAMP1

136K

136K

REF
REF

-

+

-

+

-

+

-

+

REF

+

-

-

+

LOGIC

CONTROL

I2C BUS

INTERFACE

0

0

5.0

5.0

5.0

5.0

4.8

4.7

4.8

4.7

5.0

5.0

4.8

4.7

5.0

4.9

5.0

NC

RIPPLE
FILTER

+

-

+

NC

-

+

+

ATT.

VCC

GND

STAND

-BY

OUT

MUTE

OUT

ATT.CONT.

NC

CH2

CH1

GND

CH2

IN

IN

CH1

RF

22

23

10.0

3.6

0

0

13.9

0

0

0

0

0

0

6.7

14.9

12.1

6.7

4.8

4.8

0.7

27

26

NC

25

24

SOUND SCHEMATIC DIAGRAM

(MAIN PCB)

PCB010
TMA530

Summary of Contents for 29AS42

Page 1: ...SERVICE MANUAL COLOR TELEVISION 29AS42 FILE NO 050 200208 DOCUMENT CREATED IN JAPAN Jun 2002 ...

Page 2: ...de ray tube and the high voltage peripheral circuit etc Therefore when repairing the high voltage pe ripheral circuit use the designated parts and make sure not modify the circuit Repairing except indicates causes rising of high voltage and it emits an X ray from the cathode ray tube 7 PERFORM A SAFETY CHECK AFTER SERVICING Confirm that the screws parts and wiring which were removed in order to se...

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 125 W at AC 120 V 60 Hz Stand by at AC 3 W at AC 120 V 60 Hz Per Year ...

Page 4: ... Stream 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 Game Timer 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 ...

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: ...k Yes Game Timer Yes Energy Star No Favorite CH Yes 1 Tuner P in P No 2 Tuner P in P No G 12 Accessories Owner s Manual Language English Spanish 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 Instruc...

Page 7: ... RCA x 2 Video Output RCA Audio Output RCA 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 740 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 Orig...

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: ...ng a blower type IC desoldering machine Refer to Fig 2 2 2 Fig 2 2 NOTE Do not add the rotating and the back and forth directions force on the IC until IC can move back and forth easily after desoldering the IC leads completely When IC starts moving back and forth easily after desoldering completely pickup the corner of the IC using a tweezers and remove the IC by moving with the IC desoldering ma...

Page 10: ... Thin tip Soldering Iron NOTE When the IC leads are bent during soldering and or repairing do not repair the bending of leads If the bending of leads are repaired the pattern may be damaged So be always sure to replace the IC in this case Finally confirm the soldering status on four sides of the IC using a magnifying glass Confirm that no abnormality is found on the soldering position and installa...

Page 11: ... 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 WHEN REPLACING EEPROM 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 A9 C3 37 00 31 B3 27 16 2B 00 0...

Page 12: ...E BALANCE NOTE Adjust after performing CUT OFF adjustment 1 2 3 4 5 6 7 Place the set with Aging Test for more than 10 minutes Receive the gray scale pattern from the Pattern Generator Using the remote 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 Press the CH UP DOWN...

Page 13: ...ig 2 1 Connect the oscilloscope to TP804 Press the channel button 24 on the remote control to select COL CENT Adjust the VOLTS RANGE VARIABLE knob of the oscilloscope until the range between white 100 and 0 is set to 5 scales on the screen of the oscilloscope Press the VOL UP DOWN button on the remote control until the red color level is adjusted to 110 5 of the white level Refer to Fig 2 2 Receiv...

Page 14: ...UP DOWN button on the remote control to adjust it until the R ch output becomes minimum Set the multi sound signal generator L ch Non input R ch 1KHz and receive the RF Connect the oscilloscope to the Audio Out Jack L ch Activate the adjustment mode display of Fig 1 1 and press the channel button 38 on the remote control to select SEP 2 Press the VOL UP DOWN button on the remote control to adjust ...

Page 15: ...rforming adjustments in section 3 1 1 2 3 4 5 Receive the green raster pattern from color bar generator Adjust the pair of purity magnets to center the color on the screen Adjust the pair of purity magnets so the color at the ends are equally wide Move the deflection yoke backward to neck side slowly and stop it at the position when the whole screen is green Confirm red and blue color Adjust the s...

Page 16: ...ION L503 CP502 CRT CP1001 SPEAKER CRT PCB CRT CP401 CP702A VR401 VR502 FB401 TP002 W011 CP101 TU001 J702 J701 J703 J704 J708 CP801A J801 CP805 CP806 CP803 TP806 CP804 TP804 R804 R808 CRT CRT MAIN PCB CP702B J705 J706 J707 CD702 VIDEO JACK PCB CD801 CD805 CD803 TP001 CP501 AC IN CD501 ...

Page 17: ...MP Q802 Q811 GREEN RED AMP MEMORY IC IC199 S 24C16AFJA TB 01 5 6 Q803 Q812 BLUE AMP Q405 H OUT Q402 H DRIVE 27 36 35 34 33 30 31 SCL1 SDA1 9 BLANK RED R GREEN G BLUE B RESET REMOCON 3 RESET IC IC103 PST600C 1 OS101 Q601 Q603 PROTECT MICON IC101 OEC7074A 41 PROTECT 6 KEY 1 7 19 20 1 KEY 2 X101 8MHz X IN X OUT AUDIO MUTE VOL_UP CH UP VOL_DOWN CH DOWN POWER SOUND AMP IC1001 AN5276 7 R SPEAKER SP1001 ...

Page 18: ...052 R631 R426 W037 W039 W116 C713 L002 C735 C714 R741 R734 R728 R711 R723 R748 R749 R770 R717 R702 CD701A C715 R708 J702 IC701 R705 R707 C705 D711 C733 C1007 C1008 C1009 HS1001 IC1001 C1011 C1004 L201 L203 R221 W172 W181 W173 W201 C003 W183 W177 TU001 W197 W194 W093 W094 W187 W209 W203 W193 W133 W107 W100 W105 C002 C1003 C004 L701 W824 W818 W099 W101 W083 W085 L1512 C1530 W108 W110 C1525 W103 L151...

Page 19: ...1505 C1504 C1513 R1505 R1506 C1517 Q1503 C1519 R1507 C1514 R1504 C1512 C1515 C1516 R1508 Q1504 R1509 C1509 Q1505 R1514 Q1506 R1513 R1515 R1517 C1531 C1521 R1510 C1503 R320 C1535 R126 R101 R104 Q406 R150 C132 Q109 C526 R403 C554 R533 R532 R513 R516 R511 C524 R125 R139 C109 C108 R108 R109 C143 C121 C128 C139 C607 R640 Q603 R638 R751 Q701 C723 R722 R721 R740 C738 R715 C747 C745 C746 R726 Q709 C744 C7...

Page 20: ...2 R812 R811 R819 R821 R815 C805 C806 D803 D802 R829 R814 R801 R830 TP805 TP804 TP806 CP803 L802 R803 CP804 C809 C820 C815 CP806 C808 D807 D808 J801_2 R828 Q812 Q810 R810 W001 R813 W002 W003 CP805_1 C823 C813 D809 Q811 W804 W802 W803 PRINTED CIRCUIT BOARDS CRT SOLDER SIDE ...

Page 21: ... 100uH TU001 ENV56DB6G3 1 10 11 12 13 14 15 2 3 4 5 6 7 8 9 IC103 PST600C RESET IC 1 2 3 SW103 SKHVBED010 VOL UP SW102 SKHVBED010 CH DOWN SW104 SKHVBED010 VOL DOWN SW101 SKHVBED010 CH UP SW105 SKHVBED010 POWER IC199 S 24C16AFJA TB 01 MEMORY IC 1 2 3 4 5 6 7 8 Q103 KRC102SRTK X RAY TEST X101 EFOEC8004T4 1 2 3 D109 SLR 342VCT32 POWER ON CAUTION DIGITAL TRANSISTOR TM101 SBKMOP006B IC101 OEC7074A MICO...

Page 22: ...W838 W840 W805 W842 W843 W813 W808 W802 W839 D201 MTZJ12B D602 MTZJ6 2B D604 MTZJ6 2B D603 MTZJ6 2B D606 MTZJ5 6B C615 100 16V YK C640 1000 16V YK C616 47 16V YK C214 10 16V KA C211 0 22 50V KA C213 100 10V YK C203 100 16V YK C935 4 7 50V KA C608 1 50V KA C604 1 50V KA C216 10 16V KA D605 11E1 EIC D611 1SS133 D613 1SS133 D614 1SS133 D608 1SS133 D612 1SS133 D615 1SS133 Q201 2SC2412K AUDIO BUFFER Q6...

Page 23: ... BY CAUTION DANS LA NOMENCLATURE DES PIECES N UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETANT LES PIECES REPAREES PAR UN ATTENTION R437 1 1 2W R416 3 9 1 2W R420 2 7 1 2W R417 33K R407 3 9K 1 4W R424 2 2K 1 2W R432 8 2K 1 2W R409 680 1 2W R421 680 1 2W R425 680 1 2W R429 680 1 2W R408 220 1 2W R443 68K 1 2W R428 100 1 4W R406 220 1 2W R403 330 R430 68K 1 2W R460 1K 1 4W R415...

Page 24: ...53 27K 1 2W R508 6 8K 1 4W R554 100K 1 2W R519 1K 1 2W R511 22K R535 18K 1 4W R539 1 2M 1 4W R540 1 2M 1 4W R532 1 5K R510 100 1 4W R520 390 1 4W R513 10K R507 220K 1 4W R516 10K R505 10K 1 4W R524 2 2K 1 4W R545 150 1 4W R544 270 1 4W R543 1K 1 2W R547 100 R533 270 R500 2 7M 1 2W 10 R546 100 1 4W R537 150K 1 4W R512 1K 1 4W R525 47K R503 10K 1 4W C512 0 047 TF C505_1 0 22 250V ECQUL C513 0 001 25...

Page 25: ... 8K R327 100K R328 100 R326 100 R319 4 7K R1009 10K R314 2 7K R320 2 7K R322 1 5K R323 1 5K R1003 330 R1004 330 C330 0 022 B C333 0 47 B C331 0 022 B C332 0 47 B C334 0 033 B C335 0 033 B C339 0 01 B C338 0 001 B C336 100P CH C337 100P CH C325 0 01 B C1006 220P B W809 C1011 100 25V YK C329_1 22 16V KA C328_1 22 16V KA C326 47 16V YK C303 47 16V YK C1009 2200 16V YK C1003 1000 25V YK C1004 2200 16V...

Page 26: ... 1 4W R748 3 9K 1 4W R716 470 R735 75 1 4W R770 470 1 4W R751 680 R740 1 2K R721 1 2K R722 1 5K R752 680 R727 1K R739 3 9K R731 220K R737 180K R730 180K R736 1K R738 220K R720 100 1 4W R732 3 9K C731 0 01 B C727 0 0056 B C726 0 0056 B C744 0 0056 B C743 0 0056 B C730 0 1 B C706 8P CH C728 1 B C708 1 B C734 0 01 B C750 1 B C748 0 1 B C720 33P CH C722 1 B C745 1 B C746 1 B C747 1 B C712 1 B C737 1 B...

Page 27: ...B C1505 1 B C1508 0 1 B C1503 0 1 B C1515 0 1 B C1533 22P CH C1521 0 1 B C1526 0 01 B C1523 0 001 B C1514 0 1 B C1516 0 1 B C1512 0 1 B C1509 0 01 B C1513 0 1 B C1517 100P CH C1519 0 1 B C1531 0 01 B C1535 0 1 B C1522 8P CH C1524 20PCH C1527 470P CH C1506 0 1 B C1507 0 1 B W848 W859 C1501 100 6 3V YK C1525 100 6 3V YK C1520 100 16V YK C1502 100 6 3V YK C1510 100 6 3V YK C1528 100 16V YK C1530 3 3 ...

Page 28: ...REES PAR UN ATTENTION R817 270 1 4W R819 270 1 4W R802 100 1 4W R815 220 1 4W R803 100 1 4W R821 270 1 4W R811 1 8K 1 4W R812 1 8K 1 4W R810 1 8K 1 4W R813 220 1 4W R801 100 1 4W R814 220 1 4W R809 100 1 4W R829 2 7K 1 4W R828 2 7K 1 4W R830 2 7K 1 4W C806 470P B C804 390P B C805 390P B C815 330P B C820 0 001 500V B C813 0 0022 M C823 330P B C808 0 001 2KV B W804 W802 W803 C809 2 2 250V YK D808 1S...

Page 29: ...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 30: ...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 31: ... 1ms div 1 0V 1ms div 32 33 1 0V 10µs div 34 The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTE WAVEFORMS 50V 10µs div 37 CRT 50V 10µs div 50V 10µs div 38 39 ...

Page 32: ...02 202 114 114 114 MECHANICAL EXPLODED VIEW 201 201 201 201 201 201 111 204 108 204 201 104 206 205 205 203 203 PCB010 MAIN PCB 102 204 104 103 203 205 206 112 204 PCB170 VIDEO JACK PCB 101 106 109 107 113 204 115 110 204 204 204 ...

Page 33: ... CAUTION 113 AD301474 735WPBA416 BUTTON ASS Y 114 AD300768 762WPA0009 HOLDER CRT WIRE 115 AD301475 723549A007 AV LABEL 201 BZ710036 8117540B04 SCREW TAPPING B0 TRUSS 4x20 202 BZ710033 8111J50D05 SCREW TAPPING A GW22 5x35 203 BZ710019 8109630802 SCREW TAP TITE B BRAZIER 3x8 204 BZ710031 8110630A04 SCREW TAP TITE P BRAZIER 3x10 205 BZ710239 8109I30A04 SCREW TAP TITE B WH7 3x10 206 BZ710018 810763080...

Page 34: ... BZ110195 E02LU8220M CE 22 UF 100V C501 AD300067 E02LF4102M CE 1000 UF 35V C502 AD300078 C0JBB0713K CC 0 001 UF 2KV B C503 AD300078 C0JBB0713K CC 0 001 UF 2KV B C504 AD301348 E02LU5100M CE 10 UF 50V C505 BZ110025 P2122B224M CMP 0 22 UF 250V ECQUL or BZ110138 P2472B224M CMP 0 22UF 275V PHE840 C506 BZ110035 P2122B104M CMP 0 1 UF 250V ECQUL or BZ110145 P2472B104M CMP 0 1 UF 275V PHE840 C507 BZ110012 ...

Page 35: ... 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 1SS133...

Page 36: ... R S Q1505 BZ510002 T8YJ2412K0 TRANSISTOR SILICON 2SC2412KT146 R S Q1506 BZ510001 T6YJ1037K0 TRANSISTOR SILICON 2SA1037AKT146R S Q1507 BZ510002 T8YJ2412K0 TRANSISTOR SILICON 2SC2412KT146 R S Q1508 BZ510002 T8YJ2412K0 TRANSISTOR SILICON 2SC2412KT146 R S COILS TRANSFORMERS L002 BZ310002 021673101K COIL 100 UH L201 BZ310041 02167F101J COIL 100 UH L203 BZ310112 021LA61R2K COIL 1 2 UH L204 BZ310043 021...

Page 37: ...CONNECTOR PCB SIDE A3963WV2 3PD CP502 AD300687 069S420110 CONNECTOR PCB SIDE A1561WV2 2P CP803 BZ614269 069S320010 CONNECTOR PCB SIDE A2361WV2 2P CP804 BZ614058 069W010010 CONNECTOR PCB SIDE 005P 2100 CP805 BZ614213 069S2A0629 CONNECTOR PCB SIDE A2001WV2 10P CP806 BZ614269 069S320010 CONNECTOR PCB SIDE A2361WV2 2P CD701A AD300622 06CH243001 CORD CONNECTOR CH243001 CP1001 AD301045 069S140419 CONNEC...

Page 38: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...

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