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Toshiba 21AZ5VX, Service Manual

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Toshiba 21AZ5VX Service Manual Download Page 30

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31

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32

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POWER/DEF  BOARD  PB0676

BOTTOM  (FOIL)  SIDE

MCL-437F

CAUTION

LIVE AREA

T461

P497

P803B

SA03

SA06

SA05

SA04

SA02

SA01

RA73

S801

C802

P910

R810

Z801

Q840

C884

Q801

T862

L885

F802

D801

C810

Q826

T802

F470

D883

R899

C806

C805

L811

R829

R818

C817

D809

D815

C822

C829

C808

D805

R823

R819

D806

G812

C821

C819

Q802

R822

D804

D818

R814

C811

C813

C814

Q430

L883

C893

R470

R890

C843

C842

C841

R841

C472

G828

G815

C823

G810

R805

D810

R804

R807

R809

D819

D817

R815

C818

R824

R803

R415

P903B

C467

Q301

L441

P401

Q404

T401

D461

L461

Q460

C444

D406

C445

C447

C440

Q461

R430

C210

C441

C449

R447

D441

CB20

D408

C443

R328

R448

D308

C310

L463

C464

D467

R441

C442

R416

Q402

C413

C417

R411

R413

C416

RB28

RB27

CB21

QB21

G402

R429

C463

G406

D319

D301

G320

C308

C311

L301

C315

C314

R340

R338

R332

D305

C320

D332

R307

R303

R333

R336

C363

R363

R304

R306

C305

C307

C306

R312

C313

R327

TP82

R308

R305

R463

C318

R466

R101

R315

D306

R314

C304

Q340

R344

C341

R342

R343

R217

R228

G472

R471

R827

D811

D828

R820

C833

C846

R846

P704B

055

Z889

D885

L886

C885

D896

L896

C887

C889

C895

L889

G814

G817

R889

G894

DB30

R341

R349

C342

R842

C470

C847

C883

G865

D340

QB30

RB30

R847

QB02

RB02

RB11

RB12

RB01

CB01

RB09

RA71

R432

D443

D478

C439

Q431

R436

R437

R435

D431

TP81

C898

G806

G805

C448

R802

P498

GJ89

GJ88

GJ86

GJ87

GJ95

GJ94

GJ92

GJ93

Q462

QB20

RB20

CB22

D807

DB01

C436

KB01

R811

R808

L801

C465

GJ03

GJ04

C460

BB12B

BB11B

D444

P602B

P499

P496

GJ34

GJ35

CH UP

CH DN

V

OL   UP

V

OL DN

VIDEO

MENU

T800mA L/250V

T3.15A L/250V

B

C

E

+

+

+

B

E

B

E

B

E

B

E

+

+

+

+

+

1

5

7

+

+

1

2

4

5

+

+

+

+

+

+

1

2

3

4

+

B

E

B

E

1

3

5

17

10

+

+

+

3

5

23

24

25

26

27

28

5

6

7

8

9

10

59

58

57

56

B

E

+

+

+

+

E

B

E

B

+

1

16

1

16

60

61

62

63

64

A-VCC

A-VCC

A-GND

A-GND

32V

B

E

5

10

5

10

6

7

C

R828

GJ06

G

J0

5

Q

88

0

R880

R881

B

E

C

R460

R462

D463

RA72

P495

R485

R484

R480

Q463

R489

R483

R486

R461

Q465

Q464

R464

C461

B

B

B

E

E

E

R468

DEG

AC

FUSE

B

E

QB01

R469

R365

D310

C499

C

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Summary of Contents for 21AZ5VX

Page 1: ...Dec 2003 FILE NO 040 200217 SERVICE MANUAL COLOUR TELEVISION S0ES Chassis 21AZ5VX ...

Page 2: ...ODE 6 DESIGN MODE 9 ELECTRICAL ADJUSTMENTS 10 CIRCUIT CHECK 15 CHAPTER 2 SPECIFIC INFORMATIONS SETTING ADJUSTING DATA 16 LOCATION OF CONTROLS 17 PROGRAMMING CHANNEL MEMORY 18 CHASSIS AND CABINET REPLACEMENT PARTS LIST 20 PC BOARDS BOTTOM VIEW 29 TERMINAL VIEW OF TRANSISTORS 35 CIRCUIT BLOCK DIAGRAM 38 SPECIFICATIONS END APPENDIX CIRCUIT DIAGRAM ...

Page 3: ...e attempted by anyone unfamiliar with the necessary precautions on this receiver The following are the necessary precautions to be observed before servicing this chassis 1 An isolation transformer should be connected in the power line between the receiver and the AC line before any service is performed on the receiver 2 Always discharge the picture tube anode to the CRT conductive coating before h...

Page 4: ...ECTION YOKE TEMPORARY MOUNTING RUBBER WEDGE ADHESIVE DEFLECTION YOKE PURITY CONVERGENCE MAGNET ASS Y 29 1mm 28 29 25mm 25 19mm 19 20 21 14mm 13 14 Figure 1 COLOR PURITY ADJUSTMENT NOTE Before attempting any purity adjustments the receiver should be operated for at least fifteen minutes 1 Demagnetize the picture tube and cabinet using a degauss ing coil 2 Set the brightness and contrast to maximum ...

Page 5: ...1 Do not remove cover paper on adhesive part of the wedge 3 Tilt front of the deflection yoke up or down to obtain better convergence in circumference See figure 3 Push the mounted wedge into the space between picture tube and the yoke to fix the yoke temporarily 4 Put other wedge into bottom space and remove the cover paper to stick 5 Tilt front of the yoke right or left to obtain better conver g...

Page 6: ...data value Volume on TV or Remote Adjustment menu mode ON OFF MENU button on TV Initialization of the memory QA02 CALL Channel button on TV s Reset the count of operating protect circuit to 00 CALL Channel button on TV t RCUT selection 1 button GCUT selection 2 button BCUT selection 3 button CNTX or SCNT selection 4 button COLC selection 5 button TNTC selection 6 button Test audio signal ON OFF 1k...

Page 7: ... item 2 Press and hold the CALL button on the Remote then press the CHANNEL s button on the TV The initialization of QA02 has been complated 3 Check the picture carefully If necessary adjust any adjustment item above Perform Auto search Memory on the owner s manual CAUTION Never attempt to initialize the data unless QA02 has been replaced 7 TEST SIGNAL SELECTION 1 Every pressing of a button on the...

Page 8: ...ated color of mode now selected Green and Red Indicated color of other modes White Green Normal Red The microcomputer operates to provide judgement of no video signal The red color is still indicated though the signal is input failure may exist in input signal line including QV01 QV01 In case of indication green Normal In case of indication red with input signal Failure may exist in output line in...

Page 9: ...ign mode changes the adjustment items in the order of table 3 s button for reverse order Refer to table 3 for data of design mode See SETTING ADJUSTING DATA on page 16 3 ADJUSTING THE DATA Pressing of VOLUME s or t button will change the value of data When QA02 is initialized items OPT0 and OPT1 of DESIGN MODE are set to the data of the representative model of this chassis family Therefore because...

Page 10: ... the difference between the belt of vertical retrace and the border of black portion of inside pattern is visible After that return vertical height and contrast ITEM ADJUSTMENT PROCEDURE Belt of vertical retrace HORIZONTAL POSITION ADJUSTMENT HPOS VERTICAL POSITION ADJUSTMENT VPOS 1 Set the TV in service mode and get black or white cross bar signal with VIDEO button on remote hand unit 2 Select ei...

Page 11: ...on screen Note Every pressing of button provides Horizontal line picture and Normal picture alternately 5 Press button to release horizontal line picture and select the two other colors which did not light in the above step with CHANNEL s t buttons Then tap VOL UME buttons so that three colors slightly light in the same level X To correct white balance in light area select GDRV and BDRV with CHANN...

Page 12: ...s by eye check SPEC 4 1 5 bars Note This ITEM Adjust at last 3 SUB COLOUR CENTER COLP Measuring point Q501 22 B OUT Adjusting signal Sub Bright PAL signal Adjusting method 1 Set user control to the standard 1 2 Change COLP data COLC Difference data to adjust the 6th peak amplitude of rainbow color bar Adjust the amplitude of color bar p p value of the upper half 1 4 0 2V p p Note This ITEM Adjust ...

Page 13: ...H 3 Set the mode to the one horizontal line mode 4 Change SCREEN VR to set it so that one of the line R G and B will light slightly 5 Change CUT OFF data to set it so that each one of R G and B will light slightly for about white 6 Release the H Line mode 7 Change B G drive data and R G B CUT OFF data to adjust white balance in bright area and dark area Bright area High light area 103cd m2 Dark ar...

Page 14: ...not use French SECAM Measuring place On Picture Setting Contrast Max Bright Center Color Center Adjusting method Adjust VPOS upper and lower position on Philips pattern may become a center Turn the direction of CPT to the south or the north when adjusting Adjust the amount offsetting if it is not possible to do 12 VERTICAL HEIGHT Input signal WG Philip Pattern Do not use French SECAM Measuring pla...

Page 15: ...n accurate high voltage meter to the second anode of the picture tube 2 Turn on the receiver Set the BRIGHTNESS and CONTRAST controls to minimum zero beam current 3 High voltage must be measured below B kV Refer to table 1 for high voltage B See SETTING ADJUSTING DATA on page 16 4 Vary the BRIGHTNESS control to both extremes to be sure the high voltage does not exceed the limit under any condition...

Page 16: ... data RCUT GCUT BCUT GDRV BDRV BRTC COLC TNTC COLP COLS SCNT HPOS VPOS HIT VLIN WID PARA CNR TRAP SRY SBY R CUTOFF B W G CUTOFF B W B CUTOFF B W G DRIVE B DRIVE SUB BRIGHT CEN SUB COLOR CEN NTSC SUB TINT CEN SUB COLOR CEN PAL SUB COLOR CEN SECAM SUB CONTRAST 50Hz H POSITION V POSITION HEIGHT V LINEARITY PICTURE WIDTH E W PARABOLA E W CORNER TRAPEZIUM SECAM R Y SECAM B Y 20H 20H 20H 40H 40H 40H 40H...

Page 17: ...Level down in each function t s Menu select o Sound Mute f Power on standby Volume down up Channel select Position down up a TV VIDEO select h Picture control 8 Sound control Level up in each function Video Input 2 Audio Input 2 Infrared Receiving Window Power Indicator Power Switch Channel Up Channel Down Volume Up Volume Down TV Video MENU Remote Head Phone Jack Digit select ...

Page 18: ...matically When programming is complete the initial position number will reappear After presetting Check the preset channels by pressing the position down up buttons If the picture or sound of a certain channel is not good fine tune the channel using the MFT function If the colour of a certain channel is abnormal automatic colour system selection AUTO may malfunction or sound system selection is wr...

Page 19: ... Press the MENU button repeatedly to call up the SET UP menu on the screen Press the t s buttons to move the cursor S to AFT Press the buttons to select the ON indication Note When position is set to AFT OFF status the R mark appears to the left of the position number When the channel is set to AFT ON status the posi tion number is displayed without the R mark 1 2 3 4 1 2 3 After presetting the ch...

Page 20: ...50V F 0 01UF Z C433 24666100 ELECTROLYTIC 10V 10UF M 3A C436 24665102 ELECTROLYTIC 10V 1000UF M 3A C439 24232103 CERAMIC DISC 50V F 0 01UF Z C440 24082934 PLASTIC FILM 1500VH 1500PF H C441 24693472 PLASTIC FILM 100V 4700PF J C442 24082995 PLASTIC FILM 250V 0 36 UF J C443 24667102 ELECTROLYTIC 25V 1000UF M 3A C444 24082963 PLASTIC FILM 1500VH 9100PF H C445 24828563 PLASTIC FILM 200V 56000PF J C447 ...

Page 21: ... M C842 24794100 ELECTROLYTIC 16V 10UF M C843 24590104 PLASTIC FILM 50V 0 1UF J C846 24538224 PLASTIC FILM 50V 0 22UF J C883 24538474 PLASTIC FILM 50V 0 47UF J C884 24086916 ELECTROLYTIC 160V 330UF M 3D C885 24214471 CERAMIC DISC 500V B 470PF K C887 24214471 CERAMIC DISC 500V B 470PF K C889 24668222 ELECTROLYTIC 35V 2200UF M 3A C893 24092337 CERAMIC DISC 2KV 220PF K C895 24676470 ELECTROLYTIC 100V...

Page 22: ...LM 1 6W 820K OHM J R308 24366471 CARBON FILM 1 6W 470 OHM J R312 24552272 OXIDE METAL FILM 1 2W 2 7K OHM J R314 24366105 CARBON FILM 1 6W 1M OHM J R315 24366824 CARBON FILM 1 6W 820K OHM J R316 24366154 CARBON FILM 1 6W 150K OHM J R327 24321109 OXIDE METAL FILM 1 2W 1 OHM J R328 24988033 METAL FILM 1W 1 5 OHM J R330 24366471 CARBON FILM 1 6W 470 OHM J R331 24366104 CARBON FILM 1 6W 100K OHM J R333...

Page 23: ...819 24988018 METAL FILM 1 2W 3 9 OHM J R820 24366101 CARBON FILM 1 6W 100 OHM J R822 24552103 OXIDE METAL FILM 1 2W 10K OHM J R823 24552392 OXIDE METAL FILM 1 2W 3 9K OHM J R824 24569689 CERAMIC COVERED 10W 6 8 OHM J R827 24366472 CARBON FILM 1 6W 4 7K OHM J R828 24366222 CARBON FILM 1 6W 2 2K OHM J R829 24321399 OXIDE METAL FILM 1 2W 3 9 OHM J R830 24322229 OXIDE METAL FILM 1W 2 2 OHM J R831 2436...

Page 24: ...66102 CARBON FILM 1 6W 1K OHM J RN24 24366822 CARBON FILM 1 6W 8 2K OHM J RN25 24366101 CARBON FILM 1 6W 100 OHM J RN31 24366333 CARBON FILM 1 6W 33K OHM J RN32 24366333 CARBON FILM 1 6W 33K OHM J RN33 24366332 CARBON FILM 1 6W 3 3K OHM J RN34 24366332 CARBON FILM 1 6W 3 3K OHM J RS01 24366103 CARBON FILM 1 6W 10K OHM J RS02 24366104 CARBON FILM 1 6W 100K OHM J RS03 24366103 CARBON FILM 1 6W 10K O...

Page 25: ...23 TRANSISTOR 2SC2878 A TEM Q610 23906582 IC AN5277 Q610C 70391355 SCREW BIND HEAD TAP TITE B BITTB 3X8 SZN Q612 23314962 TRANSISTOR KTA1266 Y Q623 23114478 TRANSISTOR RN2004 Q706 23314965 TRANSISTOR KTC3198 Y Q707 23114437 TRANSISTOR 2SC752GTM Y Q709 23314965 TRANSISTOR KTC3198 Y Q710 23314962 TRANSISTOR KTA1266 Y Q711 23314909 TRANSISTOR 2SA1837 Q712 23314912 TRANSISTOR 2SC4793 Q719 23314965 TRA...

Page 26: ...C G117 24232103 CERAMIC DISC 50V F 0 01UF Z G202 23238714 COIL PEAKING TRF4100AJ G402 23103894 FILTER FERRITE BEAD TEM2011AW G472 24531680 FUSIBLE 1 2W 68 OHM J G616 24366103 CARBON FILM 1 6W 10K OHM J G620 24794101 ELECTROLYTIC 16V 100UF M G714 24545220 FUSIBLE 1 4W 22 OHM J G805 23248234 COIL CHOKE TLN3481AC G806 23248234 COIL CHOKE TLN3481AC G810 23103894 FILTER FERRITE BEAD TEM2011AW G828 2310...

Page 27: ...X Y120 23943846 BAG POLY Y125 23142083 ADAPTOR Y126 23124081 ANTENNA ROD TT ANT07 TB CABINET PARTS A201 23530276 COVER FRONT COVER 21AZ5VX TSP2001112911 A265 23445415 BUTTON POWER BUTTON 21D7 C005001E A270 23445416 BUTTON CONTROL BUTTON 21D7 C005002E A272 23428093 DOOR DOOR PROPER 21AZ5VX TSP2002010401 A283 23451204 PUSH CATCH A401 23540203 COVER BACK COVER PROPER 21D7XHV Z005008E A510 23030988 SC...

Page 28: ... 28 SPECIFIC INFORMATIONS THIS PAGE IS INTENTIONALLY LEFT BLANK ...

Page 29: ...54 C482 Q452 R453 RA14 RA64 RA65 RA15 RB26 CA34 RA26 RA27 RA34 RB22 QA10 RA74 RA75 CA70 CA71 RA76 C451 R459 Q451 R451 R452 Q422 Q423 R439 R427 R426 R423 R442 Q424 G616 Q612 D612 C612 R612 D610 C610 R610 G620 Q830 Q420 Z424 R830 RA37 RA38 CA38 CA37 RA68 RA67 RB42 RB41 RB40 RB46 RB45 QB40 R425 D420 D421 R477 CC24 D477 C421 C420 C831 D830 G300 CC23 R831 RB44 RB47 RB43 DA31 DA32 202 R525 R301 GA60 C69...

Page 30: ...3 R327 TP82 R308 R305 R463 C318 R466 R101 R315 D306 R314 C304 Q340 R344 C341 R342 R343 R217 R228 G472 R471 R827 D811 D828 R820 C833 C846 R846 P704B 055 Z889 D885 L886 C885 D896 L896 C887 C889 C895 L889 G814 G817 R889 G894 DB30 R341 R349 C342 R842 C470 C847 C883 G865 D340 QB30 RB30 R847 QB02 RB02 RB11 RB12 RB01 CB01 RB09 RA71 R432 D443 D478 C439 Q431 R436 R437 R435 D431 TP81 C898 G806 G805 C448 R80...

Page 31: ... R719 D720 Q905 Q901 Q903 P903A B C E KG G2 KR G1 H H KB E B C B E C B E B E B C E E B B E E B B E B E 26 09 P905 R905 C911 Q907 E C B R977 R925 D903 R904 R934 D910 R909 L903 R943 14 C9 05 C9 R924 R922 R946 D908 R935 Q904 R919 D905 B C E L905 D907 R917 R915 04 C9 R918 R916 D904 Q902 R912 R921 R914 R928 R945 D906 B C E E C B Q906 R929 R930 R937 C907 R926 GL08 P902B C913 R932 C C Q908 E C B D901 C91...

Page 32: ...01 CZ02 CZ07 LZ03 CZ11 LZ04 LZ01 CZ01 CZ13 CZ14 CZ04 CZ08 CZ12 CZ09 CZ10 RZ05 QZ04 RZ07 RZ08 RZ09 QZ03 RZ03 RZ04 RZ01 RZ02 QZ02 CZ03 CZ06 CZ05 LZ02 CZ15 CZ LZ05 LZ LZ07 7 5 4 3 8 6 1 1 8 9 16 B E B E E C MCL 437F CZ20 RZ GZ01 CZ21 CZ18 CZ17 10 16 06 ...

Page 33: ...763A 2SC1569 2SC4544 2SA1788 2SA1306 2SA1186A 2SC752GTM 2SC2482 2SC2655 2SC4721P 2SC752 2SA562TM 2SA1015 2SC1815 2SC2878 2SC1740S 2SC2120 2SA9335 2SA1788 RN2203 RN2201 RN2004 RN1203 RN1204 RN2204 RN1205 RN1202 RN1201 2SD1554 2SD2253 2SD1556 2SC5143 2SD2553 E C B B C E B CE B CE E C B E C B B C E B C E ON4409 ...

Page 34: ... 36 GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS THIS PAGE IS INTENTIONALLY LEFT BLANK ...

Page 35: ...e 1 6W and 5 tolerance carbon resistor unless otherwise noted as the following marks 1 2R Metal or Metal oxide of 1 2 watt 1 2S Carbon compsistion of 1 2 watt 1RF Fuse resistor of 1 watt 10W Cement of 10 watt K 10 G 2 F 1 2 CAPACITOR Unless otherwise noted in schematic all capacitor values less than 1 are expressed in F and the values more than 1 in pF All capacitors are ceramic 50V unless otherwi...

Page 36: ...905 Q610 Q840 L R VIDEO L R AV IN 1 AV IN 2 MEMORY QZ01 DIG COMB REGULATOR RESET µ COM I 2 C BUS R G B HYBRID CONVERTER TRANS B VOLTAGE C Y CHROMA VIDEO DEF VIDEO OUT V OUT H OUT ERROR AMP F B T H V D Y V H CRT AUDIO OUT L R AV SW BUS CONTROL BLOCK SV V L R R MONITOR OUTPUT V L R V L CHASSIS BLOCK DIAGRAM HEADPHONE JACK ...

Page 37: ...Hz 125 W Approx Width 654 mm Height 462 mm Depth 471 mm 26 kg TYPE 21 54 cm Overall picture tube measured diagonally 51 cm Viewable picture tube measured diagonally 90 deflection Colour system Sound system 4 43NTSC 5 5 6 0 6 5 MHz PAL 60Hz 5 5 6 0 6 5 MHz PAL SECAM NTSC4 43 NTSC3 58 60 Hz PAL 50 Hz 3 58NTSC 5 W 2 10 THD 120 60 mm 2 pcs Remote Controller 1 Battery R6 AA 2 VHF 2 12 1 12 2 12 1 12 2 ...

Page 38: ...TOSHIBA CORPORATION ...

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