Toshiba 21A3E Service Manual Download | Manualshive

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MAIN BOARD PD0302
MAIN BOARD PD0303
MAIN BOARD PD0158

BOTTOM (FOIL) SIDE

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Summary of Contents for 21A3E

Page 1: ...SERVICE MANUAL COLOUR TELEVISION S1E Chassis FILE NO 060 200105 21A3E 21A3TR 21A3M 21A3MJ PRINTED IN JAPAN Jun 2001 T ...

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 CIRCUIT BLOCK DIAGRAM 20 CHASSIS AND CABINET REPLACEMENT PARTS LIST 21 PC BOARDS BOTTOM VIEW 29 TERMINAL VIEW OF TRANSISTORS 32 SPECIFICATIONS 33 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: ...ted 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 inc...

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: ...a 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 TRAPEZIUM S...

Page 17: ... off Video In Audio Input Left Main Power On Off Power Ind Infra red Sensor Channel Up Channel Down MENU Open Remote CALL 1 4 7 2 5 8 0 3 6 9 MENU Digit Select Position down up Level down up Menu open mute Power ON OFF Direct Select TV VIDEO Select Volume down up Level down up Picture control Menu Selectg Audio Input Right ...

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 position number is displayed without the R mark 1 2 3 4 1 2 3 After presetting the cha...

Page 20: ...Q901 Q903 Q905 Q610 Q840 AV IN 1 AV IN 2 MEMORY QT01 TEXT 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 ...

Page 21: ...MIC DISKCK45 B500V1000PF K C420 24666220 ELECTROLYTICCE04Q16V 22UF M 3A C421 24666470 ELECTORLYTOC CE04Q16V 47UF M 3A C431 24794102 ELECTROLYTICCE04G16V 1000UF M C433 24666100 ELECTROLYTICCE04Q10V 10UF M 3A C435 24797479 ELECTROLYTICCE04G50V 4 7UF M C440 24082951 PLASTIC FILMCF92T 1500VH 6000PF H C442 24082694 PLASTIC FILMCF92T 250VR33UFJ C444 24082934 PLASTIC FILMCF92T 1500VH 1500PF H C445 248285...

Page 22: ...6V 47UF M CA01 24473220 CERAMIC 50V 22PF J CA02 24473330 CERAMIC CC141SL 50V 33PF J CA22 24473150 CERAMIC CC141SL 50V 15PF J CA23 24473150 CERAMIC CC141SL 50V 15PF J CA24 24473150 CERAMIC CC141SL 50V 15PF J CA25 24473150 CERAMIC CC141SL 50V 15PF J CA37 24212101 CERAMIC DISKCK45 B50V 100PF K CA38 24212101 CERAMIC DISKCK45 B50V 100PF K CA42 24794100 ELECTROLYTICCE04G16V 10UF M CA43 24591104 PLASTIC ...

Page 23: ... J R336 24383331 OXIDEFILM2W330J R370 24321189 METAL FILM1 2W1R8 J R371 24366562 CARBON FILMSB 1 6W5 6K J R372 24366392 CARBON FILMSB 1 6W3 9K J R373 24366102 CARBON FILM 1 6W1K OHM J R374 24366163 CARBON FILMSB 1 6W16K J R402 24366102 CARBON FILM 1 6W1K OHM J R405 24366104 CARBON FILMSB 1 6W100KJ R408 24366472 CARBON FILM 1 6W4 7K OHM J R409 24366822 CARBON FILM 1 6W8 2K OHM J R410 24366181 CARBO...

Page 24: ...80 OHM J RA21 24366222 CARBON FILM 1 6W2 2K OHM J 21A3TR RA22 24366472 CARBON FILM 1 6W4 7K OHM J RA23 24366472 CARBON FILM 1 6W4 7K OHM J RA24 24366472 CARBON FILM 1 6W4 7K OHM J RA25 24366152 CARBON FILM 1 6W1 5K OHM J RA26 24366102 CARBON FILM 1 6W1K OHM J RA27 24366102 CARBON FILM 1 6W1K OHM J RA31 24366101 CARBON FILM 1 6W100 OHM J RA32 24366101 CARBON FILM 1 6W100 OHM J RA33 24366471 CARBON ...

Page 25: ...66151 CARBON FILM 1 6W150 OHM J 21A3TR RT43 24366151 CARBON FILM 1 6W150 OHM J 21A3TR RT46 24366332 CARBON F1LM 1 6 3 3K OHM J 21A3TR RT47 24366332 CARBON F1LM 1 6 3 3K OHM J 21A3TR RT48 24366332 CARBON F1LM 1 6 3 3K OHM J 21A3TR RV01 24366750 CARBON FILM 1 6W75 OHM J RV02 24366101 CARBON FILM 1 6W100 OHM J RV03 24366103 CARBON FILM 1 6W10K OHM J RV08 24366102 CARBON FILM 1 6W1K OHM J RV09 2455210...

Page 26: ...30 23314141 TRANSISTOR 2SC3852 Q830B 70391355 SCREW 3X8MM Q840 23318299 IC L78MR05 FA Q843 23114459 TRANSISTOR RN1205 Q846 23114540 TRANSISTOR VCBO250V IC50MA TO922SC3333 Q862 23906937 IC PHOTO COUPLER ON3171 R Q901 23114756 TRANSISTOR 2SC2482 Q903 23114756 TRANSISTOR 2SC2482 Q905 23114756 TRANSISTOR 2SC2482 Q907 23314962 TRANSISTOR KTA1266 Y Q908 23114429 TRANSISITOR 2SC2120 Y TE QA01 23000877 IC...

Page 27: ...33 21A3TR GA23 23357341 DIODE VF 1 2V DO 34 1SS133 21A3TR GA24 23357341 DIODE VF 1 2V DO 34 1SS133 21A3TR GJ07 24366472 CARBON FILM 1 6W4 7K OHM J GJ08 24366472 CARBON FILM 1 6W4 7K OHM J KB01 23906805 IC REMOTE PHOTO RECIEVERPIC TB17 N724 23965900 TAPE GLASS CLOTH W ADHESIVE W 18 T 0 18 P661 23363607 JACK HEAD PHONE 3 5MM P801 23372159 POWER CORD CEE 250V2 5A 21A3E 21A3TR P801 23372160 POWER CORD...

Page 28: ...KNOB CONTROLBUTTON A270 23836867 SPRING A275 23035412 SCREW A276 23035412 SCREW A277 23035412 SCREW A401 23540631 COVER BACK COVER A403 23553194 LABEL 21A3E A403 23553240 LABEL 21A3TR A403 23553238 LABEL 21A3M A403 23553239 LABEL 21A3MJ A511 23035412 SCREW A512 23035412 SCREW A525 23037312 SCREW A701 23064567 CARTON CASE 21A3E 21A3E A701 23064596 CASE 21A3TR A701 23064594 CASE 21A3M A701 23064595 ...

Page 29: ... 29 30 MAIN BOARD PD0302 MAIN BOARD PD0303 MAIN BOARD PD0158 BOTTOM FOIL SIDE ...

Page 30: ... 2SC5243 2SC3852 2SD1763A 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 ON4409 ...

Page 31: ...0 mm Height 456 mm Depth 485 mm 24 0 kg Approx 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 5 W 10 THD 120 60 mm 2 pcs Remote Controller 1 Battery R6 AA 2 VHF 2 12 1 12 2 12 1 12 2 13 UHF 21 69 ...

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