Toshiba 21VZ3E, Service Manual

Page 1: ...Nov 2002 FILE NO 060 200217 SERVICE MANUAL COLOUR TELEVISION S2ES Chassis 21VZ3E 21VZ3M 21VZ3MJ ...

Page 2: ...ODE 6 DESIGN MODE 9 ELECTRICAL ADJUSTMENTS 10 CIRCUIT CHECK 12 CHAPTER 2 SPECIFIC INFORMATIONS SETTING ADJUSTING DATA 13 LOCATION OF CONTROLS 14 PROGRAMMING CHANNEL MEMORY 15 CHASSIS AND CABINET REPLACEMENT PARTS LIST 17 PC BOARDS BOTTOM VIEW 23 TERMINAL VIEW OF TRANSISTORS 28 CIRCUIT BLOCK DIAGRAM 30 SPECIFICATIONS END APPENDIX CIRCUIT DIAGRAM ...

Page 3: ... 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 ha...

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: ...V TV reception mode V VIDEO input mode a Indicated color of mode now selected Green and Red Indicated color of other modes White Green Normal Red The microprocessor 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 NOTE Component which controls character display on screen is QT01 TELETEXT IC If this d...

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 13 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: ...een 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 CHANNEL s t...

Page 12: ...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 13 4 Vary the BRIGHTNESS control to both extremes to be sure the high voltage does not exceed the limit under any condition...

Page 13: ...et Data 21 Remarks Table 3 Item Adjustment Reference 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 TRAPE...

Page 14: ... up TV VIDEO select Remote Digit select Channel up down Menu select Menu open Sound mute Power ON standby Direct select TV VIDEO select Volume up down Menu adjust Picture control VIDEO AUDIO MENU CH CALL TXT TV CH CH MENU 5 4 6 2 1 3 8 7 0 9 Menu open Video input teminal Audio input teminal Headphone jack Remote sensor Power indicator ...

Page 15: ...Press the button and set POSITION to P12 Pressing and respectively decreases and in creases the Position number When Channel 12 is found press the CH t s button to select MEMORY Press the button to complete the presetting PROGRAMMING CHANNEL MEMORY For easy Channel selection the chosen Position should have the same number as Channel stored there For this operation you may use the SEARCH and SKIP f...

Page 16: ... skipping Position 13 Note When SKIP is ON the Position number is prefixed by Example 13 To confirm this select Position 13 using the button and 0 9 buttons If you want to restore a skipped position number select it using the button and 0 9 buttons then switch the SKIP setting to OFF as in step 2 above Manual fine tuning MFT Press the MENU button to display SET UP menu Press the CH t s and select ...

Page 17: ...14182 CERAMIC DISC 500V B 1800PF K C416 24678229 ELECTROLYTIC 200V 2 2UF M 3A C417 24214391 CERAMIC DISC 500V B 390PF K C420 24795220 ELECTROLYTIC 25V 22UF M C421 24666470 ELECTORLYTIC 16V 47UF M 3A C431 24797479 ELECTROLYTIC 50V 4 7UF M C432 24794100 ELECTROLYTIC 16V 10UF M C433 24232103 CERAMIC DISC 50V F 0 01UF Z C434 24232103 CERAMIC DISC 50V F 0 01UF Z C435 24794471 ELECTROLYTIC 16V 470UF M C...

Page 18: ...02 24212101 CERAMIC DISC 50V B 100PF K CA03 24353220 CERAMIC DISC 50V CH 22PF J CA04 24353220 CERAMIC DISC 50V CH 22PF J CA30 24353270 CERAMIC DISC 50V CH 27PF J CA42 24794100 ELECTROLYTIC 16V 10UF M CA45 24232103 CERAMIC DISC 50V F 0 01UF Z CA51 24212272 CERAMIC DISC 50V B 2700PF K CA52 24212152 CERAMIC DISC 50V B 1500PF K CA53 24353181 CERAMIC DISC 50V CH 180PF J CA54 24797330 ELECTROLYTIC 50V 3...

Page 19: ... OHM J R472 24366391 CARBON FILM 1 6W 390 OHM J R473 24366153 CARBON FILM 1 6W 15K OHM J R474 24376393 CARBON FILM 1 2W 39K OHM J R479 24366101 CARBON FILM 1 6W 100 OHM J R483 24552820 OXIDE METAL FILM 1 2W 82 OHM J R491 24366103 CARBON FILM 1 6W 10K OHM J R492 24366154 CARBON FILM 1 6W 150K OHM J R493 24366104 CARBON FILM 1 6W 100K OHM J R494 24366102 CARBON FILM 1 6W 1K OHM J R603 24366124 CARBO...

Page 20: ... FILM 1 6W 1K OHM J COILS TRANSFORMERS L101 23248229 COIL CHOKE TLN3040AC L103 23238558 COIL PEAKING TRF4R47AJ 21VZ3E L103 23238558 COIL PEAKING TRF4R47AJ 21VZ3M 21VZ3MJ L104 23289229 COIL PEAKING TRF4229AF L105 23289229 COIL PEAKING TRF4229AF L106 23238713 COIL PEAKING TRF4120AJ L107 23238713 COIL PEAKING TRF4120AJ L108 23238709 COIL PEAKING TRF4270AJ L115 23289100 COIL PEAKING TRF4100AF L162 232...

Page 21: ...73 23357341 DIODE 1SS133 D612 23357341 DIODE 1SS133 D622 23357341 DIODE 1SS133 D801 23357237 DIODE TS4B05G A1 D805 23118094 DIODE EU2A D806 23118094 DIODE EU2A D808 23118526 DIODE ZENER RD6 8ES B2 D809 23118529 DIODE ZENER RD5 6ES B2 D812 23118094 DIODE EU2A D818 23118507 DIODE ZENER RD13ESA B3 D872 23118511 DIODE ZENER RD12ES B2 D883 23357336 DIODE RL3A LF014 3 D885 23316714 DIODE RL2Z D901 23357...

Page 22: ...23788277 SIGNAL BOARD PD1026 21VZ3M 21VZ3MJ U903 23788051 POW DEF BOARD PD0909 PICTURE TUBE V901 23312954 PICTURE TUBE A51LVV896X 21FFG02 TUNER H001 23321428 TUNER ASIA MLT IICPLL SANYO ECA33LX8 ACCESSORIES K902 23306459 REMOCON HAND UNIT IR CTVPAL CT 90119 AT03 23588765 BATTERY COVER REMOCON CT 90119 Y101A 23565782 OWNER S MANUAL ENGLISH INDONESIAN 21VZ3E Y101A 23565842 OWNER S MANUAL ENGLISH ARA...

Page 23: ...6 T46 R311 R311 RT39 T39 RT32 T32 RT34 T34 RT33 T33 QV01 QV01 PV01 PV01 CV10 CV10 RV11 V11 GJ98 GJ98 GJ99 GJ99 CT18 CT18 R104 R104 Q111 Q111 R103 R103 GJ09 GJ09 GJ08 GJ08 Z105 Z105 Z107 Z107 Z106 Z106 R138 R138 R137 R137 GJ12 GJ12 GL512 GL512 R217 R217 C226 C226 D224 D224 Q114 Q114 R128 R128 C112 C112 L109 L109 R106 R106 C491 C491 Q113 Q113 R125 R125 C227 C227 C111 C111 R635 R635 GJ97 GJ97 GJ96 GJ...

Page 24: ... 25 26 POW DEF BOARD PD0909 BOTTOM FOIL SIDE ...

Page 25: ... 27 CRT D BOARD PD0906 BOTTOM FOIL SIDE ...

Page 26: ...569 2SC4544 2SA1788 2SA1306 2SA1186A 2SC752GTM 2SC2482 2SC2655 2SC4721P 2SC752 2SA562TM 2SA1015 2SC1815 2SC2878 2SC1740S 2SC2120 2SA9335 RN2203 RN2201 RN2004 RN1203 RN1204 RN2204 RN1205 RN1202 RN1201 2SD1554 2SD2253 2SD1556 2SC5143 2SD2553 E C B B C E BCE BCE E C B E C B B C E B C E ON4409 2SA1788 ...

Page 27: ...erance 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 otherwise noted as the ...

Page 28: ...8656 CONVERTER TRANS B VOLTAGE VIDEO OUT V OUT H OUT F B T H V D Y V H CRT AUDIO OUT L R BUS CONTROL BLOCK V A MONITOR OUTPUT V A V A CIRCUIT BLOCK DIAGRAM HEADPHONE JACK QT01 TEXT QV01 RGBIN RGB OUT IF IN MICROPROCESSOR VIDEO CHROMA DEF MONITOR OUT Ys U Y V IN VOUT HOUT HVcc SOUND Vcc POWER MUTE POWER REGU RESET EXT IN 5V ...

Page 29: ...5 mm Depth 475 7 mm 24 0 kg TYPE 21 549 1 mm Overall picture tube measured diagonally 505 5 mm 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 2 5 W 2 Input Video Audio monaural Monitor out put Video Audio monaural 6 12 cm 2 Remote Controller 1 Battery R03 AAA 2 VHF 2 12 1 12 2 12 1 12 ...

Page 30: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...