Toshiba 32A62 Service Manual Download Page 1

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TOSHIBA CORPORATION

1-1, SHIBAURA 1- CHOME, MINATO-KU, TOKYO 105-8001, JAPAN

FILE NO. 020-200204

SERVICE MANUAL

COLOR TELEVISION

N2S Chassis

32A62

PUBLISHED IN JAPAN,

May, 2002

(TAC0203)

Summary of Contents for 32A62

Page 1: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN FILE NO 020 200204 SERVICE MANUAL COLOR TELEVISION N2S Chassis 32A62 PUBLISHED IN JAPAN May 2002 So TAC0203 ...

Page 2: ...DE 8 DESIGN MODE 11 ELECTRICAL ADJUSTMENT 12 CIRCUIT CHECKS 15 CHAPTER 2 SPECIFIC INFORMATIONS SETTING ADJUSTING DATA 16 LOCATION OF CONTROLS 17 PROGRAMMING CHANNEL MEMORY 19 CHASSIS AND CABINET REPLACEMENT PARTS LIST 20 PC BOARDS BOTTOM VIEW 29 TERMINAL VIEW OF TRANSISTORS 34 CIRCUIT BLOCK DIAGRAM 36 SPECIFICATIONS END APPENDIX CIRCUIT DIAGRAM ...

Page 3: ... limit consti tutes a potential shock hazard and must be corrected im mediately WARNING Service should not be attempted by anyone unfa miliar with the necessary precautions on this receiver The fol lowing 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 serv ic...

Page 4: ...ASS CLOTH TAPES DEFLECTION YOKE TEMPORARY MOUNTING RUBBER WEDGE ADHESIVE DEFLECTION YOKE PURITY CONVERGENCE MAGNET ASS Y 14mm 13 14 19mm 19 20 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 3 Us...

Page 5: ... 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 ge...

Page 6: ...AST and BRIGHTNESS Controls to the maximum 3 Display built in green raster using the TEST SIGNAL SELECTION function 4 Loosen the clamp screw holding the deflection yoke and remove the Rubber Wedges 5 Slide the yoke forward or backward to provide vertical green belt zone in the picture screen 6 Rotate and spread the tabs of the purity magnet See figure 3 around the neck of the picture tube until th...

Page 7: ...ing the CENTER CONVERGENCE AD JUSTMENT tighten the tightening ring to fix the mag nets Figure 4 Xv COIL ADJUSTMENT Adjust the Xv coil on the deflection yoke to correct misconvergence at both sides on screen Use a hexagonal tip stick plastic to adjust the core of coil BLU BLU RED RED 6 POLE MAGNETS MOVEMENT 4 POLE MAGNETS MOVEMENT RED BLUE RED BLUE GRN GRN Center Convergence by Convergence Magnets ...

Page 8: ...splay of adjustment menu provides special functions A single horizontal line ON OFF TV ANT VIDEO button on TV Test signal selection TV ANT VIDEO button on Remote Selection of the adjustment items Channel s t on TV or Remote Change of the data value Volume s t on TV or Remote Adjustment menu mode ON OFF MENU button on TV Initialization of the memory QA02 RECALL Channel button on TV s Initialization...

Page 9: ...button will change the value of data in the range from 00H to FFH The variable range depends on the adjusting item 6 EXIT FROM SERVICE MODE 1 Pressing POWER button to turn off the TV once INITIALIZATION OF MEMORY DATA OF QA02 After replacing QA02 the following initialization is required 1 Enter the service mode then select any register item 2 Press and hold the RECALL button on the Remote then pre...

Page 10: ...ion circuit current limiter 000 is normal BUS line check OK Normal NG SCL GND or SAD GND short circuit BUS line ACK acknowledge check OK Normal Display of Location Number NG Display example QA02 NG H001 NG Q501 NG etc Note The indication of failure place is only one place though failure places are plural When repair of a failure place finishes the next failure place is indicated The order of prior...

Page 11: ...hanges 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 and OPT2 of DESIGN MODE are set to the data of the representative model of this chassis family Therefore because ...

Page 12: ... the RESET button 3 Connect oscilloscope to base of Q906 on CRT D board 4 Enter the service mode then select COLC 5 Adjust the SUB COLOR by pressing the VOLUME s or t button to achieve about 1V0 p of blue bar 6 Select TNTC register 7 Adjust the data value to obtain the blue bar to magenta bar ratio of 3 2 as shown 8 Select COLC register 9 Adjust the data value to achieve 1 8V0 p of blue bar on sco...

Page 13: ...imum 2 Call up the adjustment mode display and press the TV VIDEO button on Remote until the white and black pattern appears on the screen 3 Adjust the following item with the CHANNEL s t and VOLUME s t buttons 4 Press the TV VIDEO button on TV to display a single horizontal line on the screen 5 Turn the SCREEN control FBT fully counterclockwise and gradually rotate clockwise until the first horiz...

Page 14: ...to pin 34 of QG01 4 Change data by VOLUME s t button to minimize AC output level on scope 5 Resolder SL02 STEREO 300Hz 30 mod R channel only ANT 1 Display item WBAN on screen 2 Connect oscilloscope to pin 35 of QG01 3 Change data by VOLUME s t buttons so that 300Hz element on scope becomes minimum STEREO 3kHz 30 mod R channel only ANT 1 Display item SPEC on screen 2 Connect oscilloscope to pin 35 ...

Page 15: ...HTNESS and CON TRAST 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 con ditions FS CIRCUIT CHECK The Fail Safe FS circuit check is indispensable for the final check in servicing Che...

Page 16: ...T SAP VCO ATTENUATOR SAP FILTER STEREO VCO STEREO FILTER SPECTRAL STEREO SEPARATION HORIZ POSITION VERT POSITION Item Name of adjustment Data HIT LIN VSC VPS VCP WID DPC CNR TRAP HCP VFC PCOL PHUE DAC PGOF PROF PBOF RGBB HEIGHT V LINEARITY V S CORRECTION V SHIFT V COMPENSATION PICTURE WIDTH E W PARABOLA DPC E W CORNER TRAPEZIUM H COMPENSATION V F CORRECTION PIP COLOR PIP TINT DAC PIP PIP PIP RGB B...

Page 17: ... Rear view TV VIDEO CHANNEL t s VOLUME T S MENU POWER Remote sensor POWER indicator AUDIO MENU VIDEO 3 IN INSIDE DOOR L MONO R VIDEO TV VIDEO VOLUME CHANNEL S VIDEO IN DVD IN ANT 75 VIDEO VIDEO COLOR STREAM INPUT VIDEO2 VIDEO1 MONO AUDIO R L OUT AUDIO R L PB Y PR MONO AUDIO R L ...

Page 18: ... PLAY PIP REC STILL LOCATE SWAP TV VCR REW FF STOP SOURCE FAV FAV C CAPT EXIT MENU RESET 1 4 7 2 5 8 3 6 9 0 100 ENTER LIGHT TV CABLE VCR switch Set to TV to control the TV MUTE Channel Number C CAPT ENTER FAV t RESET PIP CH t RECALL POWER TV VIDEO CHANNEL s t VOLUME s t CH RTN PIP CH s FAV s EXIT PIP functions For TV and CABLE modes s t T S TIMER MENU ...

Page 19: ...nnel you want to erase using the CHAN NEL s or t button or select the channel you want to add using the Channel Number buttons 2 Press MENU then press S or T until the SET UP menu appears 3 Press t or s until ADD ERASE is highlighted 4 Press S or T To erase the channel Press the button until ERASE is highlighted To add the channel Press the button until ADD is highlighted 5 Repeat steps 1 to 4 for...

Page 20: ... C403 24591103 PLASTIC FILM 50V 0 01UF J C404 24797010 ELECTROLYTIC 50V 1UF M C407 24503041 PLASTIC FILM 63V 0 1UF J C408 24591273 PLASTIC FILM 50V 0 027UF J C409 24763221 ELECTROLYTIC 16V 220UF M C410 24232103 CERAMIC DISC 50V F 10000PF Z C413 24214821 CERAMIC DISC 500V B 820PF K C415 24539224 PLASTIC FILM 50V 0 22UF J C416 24678229 ELECTROLYTIC 200V 2 2UF M 3A C417 24214391 CERAMIC DISC 500V B 3...

Page 21: ...IC DISC 2KV 0 001UF K C904 24436391 CERAMIC DISC 50V SL 390PF J C905 24436391 CERAMIC DISC 50V SL 390PF J C907 24436391 CERAMIC DISC 50V SL 390PF J C909 24679220 ELECTROLYTIC 250V 22UF M 3A C910 24797478 ELECTROLYTIC 50V 0 47UF M C911 24794100 ELECTROLYTIC 16V 10UF M C912 24763471 ELECTROLYTIC 16V 470UF M C913 24794100 ELECTROLYTIC 16V 10UF M C914 24232103 CERAMIC DISC 50V F 10000PF Z C920 2421410...

Page 22: ...0UF M 7L 3A CZ31 24092730 CERAMIC CHIP 16V B 0 1UF K CZ32 24105150 CERAMIC CHIP 50V CH 15PF J CZ33 24105390 CERAMIC CHIP 50V CH 39PF J CZ34 24105150 CERAMIC CHIP 50V CH 15PF J CZ35 24105390 CERAMIC CHIP 50V CH 39PF J CZ37 24203100 ELECTORLYTIC 16V 10UF M 7L 3A CZ38 24203100 ELECTORLYTIC 16V 10UF M 7L 3A CZ41 24105470 CERAMIC CHIP 50V CH 47PF J CZ42 24105470 CERAMIC CHIP 50V CH 47PF J CZ45 24105100...

Page 23: ...E METAL FILM 1 2W 470 OHM J R861 24366104 CARBON FILM 1 6W 100K OHM J R862 24366104 CARBON FILM 1 6W 100K OHM J R898 24010001 CARBON FILM 1 2W 3 9M J R901 24552102 OXIDE METAL FILM 1 2W 1K OHM J R902 24552102 OXIDE METAL FILM 1 2W 1K OHM J R903 24552102 OXIDE METAL FILM 1 2W 1K OHM J R904 24366103 CARBON FILM 1 6W 10K OHM J R905 24366101 CARBON FILM 1 6W 100 OHM J R911 24366150 CARBON FILM 1 6W 15...

Page 24: ...OHM J RG41 24366103 CARBON FILM 1 6W 10K OHM J RG43 24366472 CARBON FILM 1 6W 4 7K OHM J RG44 24366222 CARBON FILM 1 6W 2 2K OHM J RR01 24366102 CARBON FILM 1 6W 1K OHM J RR02 24366472 CARBON FILM 1 6W 4 7K OHM J RR03 24366102 CARBON FILM 1 6W 1K OHM J RR04 24366472 CARBON FILM 1 6W 4 7K OHM J RR05 24366102 CARBON FILM 1 6W 1K OHM J RR06 24366472 CARBON FILM 1 6W 4 7K OHM J RR07 24366681 CARBON FI...

Page 25: ...AKING TRF4100AJ LZ05 23238714 COIL PEAKING TRF4100AJ LZ08 23238707 COIL PEAKING TRF4390AJ LZ11 23238710 COIL PEAKING TRF4220AJ LZ12 23238710 COIL PEAKING TRF4220AJ T401 23224380 TRANSFORMER HORIZ DRIVE TLN1098GH T461 23236746 TRANSFORMER FBT TFB4192ZD T801 23211739 COIL LINE FILTER TRF3229AL T840 23217572 TRANSFORMER POWER EI28 1 TPW1571AT T862 23217558 TRANSFORMER CONV TRS EER TPW3498AE SEMICONDU...

Page 26: ... D810 23316269 DIODE AK04 D830 23316673 DIODE ZENER MTZJ5 6C D840 23316962 DIODE S1WBA20 D845 23118859 DIODE 1SS133 D855 23118859 DIODE 1SS133 D883 23357344 DIODE VRM 600V IF AV 1 5A RU3AM D885 23118094 DIODE EU2A D899 24019485 VARISTOR TNR10V431K D901 23118859 DIODE 1SS133 D902 23118859 DIODE 1SS133 D903 23118859 DIODE 1SS133 D904 23118859 DIODE 1SS133 D905 23118859 DIODE 1SS133 D906 23118859 DIO...

Page 27: ...564 RELAY DC12V TV5 DG 3 V901A 23902068 SOCKET CRT 10P HOSIDEN HPS0360 W661 23351088 SPEAKER SPK1360 60X120 8 OHM 5W W662 23351088 SPEAKER SPK1360 60X120 8 OHM 5W X401 23153721 CERAMIC RESONATOR 503KHZ X501 23153961 CRYSTAL 3 58MHZ XA01 23153504 CERAMIC RESONATOR 8 00MHZ 25OHM ZY01 23148771 MULTI PICTURE MODULE PNT 6MW PC BOARD ASSEMBLIES U801 23787513 POW DEF BOARD PD0701A U901 23787511 CRT D BOA...

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

Page 29: ... 29 30 SIGNAL BOARD PD0654C BOTTOM FOIL SIDE ...

Page 30: ... 31 32 POWER DEF BOARD PD0701 BOTTOM FOIL SIDE ...

Page 31: ... 33 CRT DRIVE BOARD PD0655 BOTTOM FOIL SIDE 3L BOARD PB9398 BOTTOM FOIL SIDE ...

Page 32: ...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 2SD2553 2SC5143 E C B B C E BCE B CE B C E E C B E C B ON4409 B C E ...

Page 33: ...sistor 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 following marks Electolytic capacitor Mylar capacitor 3 The parts indicated with have special characteristics and should be replaced with identical parts ...

Page 34: ... 36 GENERAL ADJUSTMENTS SPECIFIC INFORMATIONS QG01 DIG Comb ZY01 PIP Module QZ01 3L DIG CIRCUIT BLOCK DIAGRAM ...

Page 35: ... 120V AC 60Hz 102W AUDIO POWER 5W 5W SPEAKER TYPE 2 3 8 x 4 3 4 inches 60 x 120 mm VIDEO AUDIO TERMINALS S VIDEO INPUT Y 1V p p 75 ohm negative sync C 0 286V p p burst signal 75 ohm VIDEO AUDIO INPUT VIDEO 1V p p 75 ohm negative sync AUDIO 150mV rms 30 modulation equivalent 47k ohm ColorStream Color Difference VIDEO AUDIO INPUT Y 1V p p 75 ohm Cr 0 7V p p 75 ohm Cb 0 7V p p 75 ohm AUDIO 2V p p 1 k...

Page 36: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN FILE NO 020 200204 SERVICE MANUAL COLOR TELEVISION N2S Chassis 32A62 PUBLISHED IN JAPAN May 2002 So TAC0203 ...

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