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SERVICE MANUAL

PRINTED IN UK. 2002 C

COLOUR TELEVISION

14N21NS

TOSHIBA

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Содержание 14N21DS

Страница 1: ...SERVICE MANUAL PRINTED IN UK 2002 C COLOURTELEVISION 14N21NS TOSHIBA ...

Страница 2: ...which has the same character Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark the designated parts must be used 4 PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING There are parts which use the insulation material such as a tube or tape for safety or which are assembled in the condition that these do not...

Страница 3: ...USED WHEN REPLACING EEPROM MEMORY IC ELECTRICAL ADJUSTMENTS BLOCK DIAGRAM PRINTED CIRCUIT BOARDS MAIN CRT SCHEMATIC DIAGRAMS MICON TUNER CHROMA SIF VIF 21PIN POWER DEFLECTION CRT SOUND AMP WAVEFORMS MECHANICAL EXPLODED VIEW MECHANICAL REPLACEMENT PARTS LIST ELECTRICAL REPLACEMENT PARTS LIST A1 1 A1 1 A1 1 A2 1 A3 1 A3 5 B1 1 B2 1 B2 2 C 1 C 1 C 2 D 1 D 5 E 1 E 2 F 1 F 4 G 1 G 2 G 3 G 4 G 5 G 6 G 7...

Страница 4: ...eceive CH Destination Ohers Tuning System F Synth Input Impedance VHF UHF 75 ohm E2 E4 X Z 2 S1 S10 E5 E12 CH Coverage S11 S41 E21 E69 Intermediate B G Frequency Picture FP 38 9 MHz Sound FS 33 4 MHz FP FS 5 5 MHz Preset CH 100 Stereo Dual TV Sound No Tuner Sound Muting Yes G 3 Power Power Source AC 230V 240V AC 50Hz DC Power Consumption at AC 44 W at AC 230 V 50 Hz Stand by at AC 3 W at AC 230 V ...

Страница 5: ...o Output Source No Source No Control Level Yes Volume Yes Brightness Yes Contrast Yes Colour Yes Tint NTSC Only Yes Sharpness Yes Tuning Yes Bass No Treble No Balance No Back Light No Nicam ST No Tone 1 2 A B No Surround On Off No Pin Code No AV Yes Skip No Channel Yes Hotel Lock No Sleep Timer No Wide Mode No Sound Mute Yes G 8 OSD Language English French Spanish Germany Italian Polski Turkey Swe...

Страница 6: ...ow Yes Cyan Yes TEXT F T B Yes Reveal Yes TIMED PAGE SUB PAGE Yes CALL TEXT INDEX Yes INPUT SELECT Yes TEXT HOLD Yes TIME TXCL Yes G 11 Features Auto Degauss Yes Auto Shut Off Yes Canal No CATV No Anti theft Back Up 30 Min No Memory Last CH Yes Memory Last Volume Yes BBE No Auto Search Yes CH Allocation Yes Just Clock Function No Game Position No CH Label No VM Circuit No Full OSD No Unitext No Fa...

Страница 7: ... Adapter No G 13 Interface Switch Front Power Tact Sw No System Select No Main Power SW Yes Sub Power No Channel Up Yes Channel Down Yes Volume Up Yes Volume Down Yes Rear AC DC No TV CATV Selector No Degauss No Main Power SW No Indicator Power No Stand by No Stand by ON On Timer Yes Red Green Stand by ON No On Timer No Terminals Front Video Input Yes Audio Input Yes Other Terminal EAR Phone Rear ...

Страница 8: ...s W x D x H mm x x Description of Origin Yes Gift Box Yes Material Double Brown Dimensions W x D x H mm 440 x 408 x 380 Design As per Buyer s Description of Origin Yes Drop Test Natural Dropping At 1 Corner 3 Edges 6 Surfaces Height cm 62 Container Stuffing 866 Sets 40 container A3 5 ...

Страница 9: ...ip 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 the s...

Страница 10: ...using 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...

Страница 11: ...2 8 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 insta...

Страница 12: ...AL DATA of MEMORY IC Refer to the WHEN REPLACING EEPROM MEMORY IC VOL MIN 8 Writing of EEPROM initial data NOTE Do not use this for the normal servicing VOL MIN Display of the Adjustment MENU on the screen Refer to the ELECTRICAL ADJUSTMENT On Screen Display Adjustment 9 CONFIRMATION OF HOURS USED POWER ON total hours can be checked on the screen Total hours are displayed in 16 system of notation ...

Страница 13: ...will blink Again step through the DATA using VOL button until required DATA value has been selected Pressing OK will take you back to ADDRESS for further selection if necessary Repeat steps 3 to 6 until all data has been checked When satisfied correct DATA has been entered turn POWER off return to STANDBY MODE to finish DATA input Fig 1 Note No need setting for the position of the mark due to the ...

Страница 14: ... 1 2 Press the MENU button on the remote control to end the adjustments NO 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 FUNCTION CUT OFF RF AGC AGC GAIN R DRIVE R CUTOFF G DRIVE G CUTOFF B DRIVE H POSI 50 V POSI 50 V POSI 60 V SIZE 50 V SIZE 60 VCO COARSE VCO FINE VCO COARSE L1 VCO FINE L1 BRIGHT CENT BRIGHT MAX BRIGHT MIN NO 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 ...

Страница 15: ...tness and contrast to normal position Place the set with Aging Test for more than 15 minutes Activate the adjustment mode display of Fig 1 1 and press the channel button 17 on the remote control to select BRIGHT CENT Press the VOL button on the remote control until the screen begin to shine Receive the PAL black pattern Audio Video Input Set to the AV mode Then perform the above adjustments 2 5 Th...

Страница 16: ...a straight line Refer to Fig 2 2 Fig 2 2 A 2 14 Confirmation of Fixed Value Step No Please check if the fixed values of the each adjustment items are set correctly referring below NO 02 04 06 07 09 10 18 19 20 21 23 24 26 27 30 31 32 33 34 35 36 37 38 FUNCTION AGC GAIN R CUTOFF G CUTOFF B DRIVE V POSI 50 V POSI 60 BRIGHT MAX BRIGHT MIN TINT SHARP CONTRAST MAX CONTRAST MIN COLOR MAX COLOR MIN M B C...

Страница 17: ...Switch the color bar generator from the green raster pattern to the crosshatch pattern Combine red and blue of the 3 color crosshatch pattern on the center of the screen by adjusting the pair of 4 pole magnets Combine red blue magenta and green by adjusting the pair of 6 pole magnets Adjust the crosshatch pattern to change to white by repeating steps 6 and 7 Turn the unit on and let it warm up for...

Страница 18: ... PARTS LOCATION GUIDE WIRING CONNECTION MAIN PCB J1001 J702 J703 FB401 VR501 TP501 R503 VR401 VR420 J701 CP101 TU001 TP001 SPEAKER CP1001 CD801 CP501 AC IN CD501 CRT CP502 CRT CP401 PH001 CP802A TP022 R803 TP023 R807 J801 CRT CP801 CP802B CD802 CRT PCB ...

Страница 19: ...UT PIFIN1 PIFIN2 VERT 47 SDA H_OUT 48 52 SCL 51 B OUT G OUT 31 30 R OUT 32 P CON 5V P CON 8V 3 TRIGGER INPUT 10 1 Vs POWER OUTPUT P CON 25V Q803 BULE OUT Q802 GREEN OUT Q801 RED OUT J801 9 3 7 F 8 Q402 H DRIVE Q401 H OUTPUT I2C DY 1 F S 2 3 HV B P CON 25V CRT V801 2 8 6 1 3 2 SPEAKER SP1001 5 12 9 SOUND B 15 B P CON 8V D Q501 POWER SW TR 56 KEY_IN CH DOWN CH UP CVBSIN2 20 AV1 7 J701 3 1 2 6 19 20 ...

Страница 20: ...47 R 5 0 3 W093 W087 D516 C521_1 C522 C515 D513 D510 C517 D511 Q504 R521 R506 R002 R001 R526 C506 W063 R517 D505 Q507 R512 D521 D518 D514 D502 R532 W027 D406 W072 W078 W081 W077 W079 W067 W068 D407 W048 R1009 R741 W055 W066 W059 W058 W057 C519 R514 W056 W065 OS101 C525 D517 W037 W034 C508 W062 W064 D509 C514 D515 D512 D519 R525 D525 W098 R003 R004 R619 IC199 X101 L101 C121 W007 W032 W820 W821 L102...

Страница 21: ... R611 R612 R613 R641 R221 I C 1 0 1 R102 C1009 C704 IC703 C746 R104 R139 R108 C1004 R1003 R1004 R135 Q102 C1006 Q604 Q602 R504 R513 R519 R515 R524 Q510 R507 Q506 R508 Q509 R541 Q508 IC102 C108 C109 Q601 C119 R114 R115 R617 R615 R616 R614 C112 C111 R113 C116 C113 R111 C106 C104 C103 R110 C102 R116 R128 R117 R124 R123 R138 R134 R106 R105 C120 R120 R142 C114 R112 C805 C806 C804 R816 R809 R813 R815 R8...

Страница 22: ...RC FK010 BT001 R03 AB 2PXGPI BT002 R03 AB 2PXGPI TP001 VCO IC102 R3111N311A C RESET 1 2 3 4 5 Q102 KRC111SRTK LED SW CAUTION DIGITAL TRANSISTOR Q103 KRA102SRTK LED SW G R D105_1 LTL 1BEFJ IC101 OECF005A MICON 1 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 25 26 27 28 29 3 30 31 32 33 34 35 36 37 38 39 4 40 41 42 43 44 45 46 47 48 49 5 50 51 52 53 54 55 56 57 58 59 6 60 61 62 63 64 7 8 9 Vout B G...

Страница 23: ...205 0 001 B C609 0 1 B C614 1 B C605 1 B C201 3P CH C213 1 B C203 0 01 B C212 0 001 B C630 0 1 B C202 0 001 B C218 0 022 B C615 1 B C603 1 F C607 1 F C624 0 01 B C221 0 1 B C204 0 0022 B X601 4 433619MHz X602 3 579545MHz CF303 MKT41 5MA110P D602 1SS133 D603 1SS133 D604 11E1 EIC D609 1SS133 D610 1SS133 D611 1SS133 L601 10uH 0305 L202 3 3uH 0305 W838 W835 W822 W829 D607 MTZJ6 8B D608 MTZJ6 8B D606 M...

Страница 24: ...0P 500V B C509 470P 500V B C529 0 001 250V KX C528 470P 250V KX C541 0 022 B C502 0 001 2KV B C530 0 1 B C503 0 001 2KV B C513 0 01 B C505 0 1 275V PHE840 C518 0 22 275V PHE840 C524 1000P 2KV R C543 0 33 B C501 2200P 250V KX C532 220P B C517 0 001 2KV R D516 SB290S D507 1SS133 D508 1N4937 D510 RU2AM EIC D519 1SS133 D521 1SS133 D518 1SS133 D514 1SS133 D513 SB290S D511 1N4937 D512 SB10 03A3 D515 SB1...

Страница 25: ... C803 1 250V YK C446 22 50V MHE C403 470 35V YK C448 10 250V YK C414 100 35V YK C819 0 001 2KV B C412_1 0 047 MMTV C435 0 1 100V MKT C437 0 39 250V PMS C443 0 0082 1 25KV MPP C401 220P B C805 470P B C806 680P B C413 0 082 B C422 0 22 100V MKT C440 0 01 100V MKT C804 470P B D410 AU02A EIC D405 AU02A EIC D407 1SS133 D406 1SS133 D403 11E1 EIC L401 4 7mH 0909 W815 W810 TP401 TP402 C417 10 50V YK C410 ...

Страница 26: ...005 68K 1 4W R1004 150K R1009 47K 1 4W R1010 33 1 2W R712 820 1 4W R710 75 1 4W R740 220 1 4W R741 1K 1 4W C711 100 10V KA C1001 470 16V YK C1002 10 16V KA C1007 10 16V KA C1005_1 1 50V KA C740 10 16V KA C1009 0 0047 B C1004 820P B C746 0 01 B C1006 470P B C704 0 001 B L714 10uH 0305 OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME WAS RECEIVED...

Страница 27: ... following waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTH 0 2ms 1 00V 0 2ms 1 00V 0 5µs 1 00V 0 5µs 1 00V 10ms 1 00V 20us 1 00V 20us 0 50V 20µs 1 00V 2ms 0 50V 20µs 1 00V 20µs 200mV 100ns 20mV 20µs 1 00V 20µs 1 00V 11 500µs 50mV ...

Страница 28: ...9 The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram NOTH H 2 20µs 5 00V 10ms 1 00V 10ms 10 0V 10ms 10 0V 20µs 10 0V 20µs 50V 20µs 50V 20µs 50V 2us 200V 20µs 5 00V 500us 100mV 10us 200mV 500us 500mV 16 20µs 1 00V ...

Страница 29: ...MECHANICAL EXPLODED VIEW 201 201 201 114 201 PCB110 CRT PCB 110 112 202 202 202 202 202 204 101 105 106 107 109 108 111 203 115 102 103 104 207 206 206 205 113 PCB010 MAIN PCB I 1 ...

Страница 30: ...W TAPPING B0 TRUSS 4x16 203 8110630A04 SCREW TAP TITE P BRAZIER 3x10 204 8110630804 SCREW TAP TITE P BRAZIER 3x8 205 8107630804 SCREW TAP TITE S BRAZIER 3x8 206 8109I30804 SCREW TAP TITE B WH7 3x8 207 8109630802 SCREW TAP TITE B BRAZIER 3x8 A3L804N975 INSTRUCTION BOOK KIT JB5XDA00 POLYBAG INSTRUCTION RED CAUTION J3L80401 INSTRUCTION BOOK SWE J3L80407 QUICK SET UP SHEET SWE J3L80410 INSTRUCTION BOO...

Страница 31: ...101J RC 100 OHM 1 10W R605 R002T4221J RC 220 OHM 1 4W R143 R801R7101J RC 100 OHM 1 10W R606 R801R7101J RC 100 OHM 1 10W R144 R801R7103J RC 10K OHM 1 10W R607 R801R7223J RC 22K OHM 1 10W R145 R801R7271J RC 270 OHM 1 10W R608 R801R7473J RC 47K OHM 1 10W R146 R801R7103J RC 10K OHM 1 10W R610 R801R7122J RC 1 2K OHM 1 10W R201 R801R7820J RC 82 OHM 1 10W R611 R801R7332J RC 3 3K OHM 1 10W R202 R801R7331J...

Страница 32: ...PF 50V CH C603 CS0RF0316Z CC 1 UF 25V F C109 CS0RCH4H1J CC 22 PF 50V CH C604 E50HU5010M CE 1 UF 50V C110 CS0RB02Q5K CC 0 47 UF 16V B C605 CS0RB0216K CC 1 UF 16V B C111 CS0RCH4W1J CC 82 PF 50V CH C607 CS0RF0316Z CC 1 UF 25V F C112 CS0RB02Q5K CC 0 47 UF 16V B C608 CS0RB0315K CC 0 1 UF 25V B C113 CS0RCH4H1J CC 22 PF 50V CH C609 CS0RB0315K CC 0 1 UF 25V B C114 CS0RB0315K CC 0 1 UF 25V B C610 E02LU2101...

Страница 33: ...5 6B T 77 SW107 0504201T31 SWITCH TACT SKHVBED010 D602 D1VT001330 DIODE SILICON 1SS133T 77 SW501 0530205016 SWITCH SDKVA30100 D603 D1VT001330 DIODE SILICON 1SS133T 77 VARIABLE RESISTORS D604 D2WT011E10 DIODE SILICON 11E1 EIC VR401 V1163H3BTC VOLUME SEMI FIXED EVNCYAA03BE3 D606 D97U06R81B DIODE ZENER MTZJ6 8B T 77 VR420 V1163Q2BTC VOLUME SEMI FIXED EVNCYAA03BQ2 D607 D97U06R81B DIODE ZENER MTZJ6 8B ...

Страница 34: ...EMENT B59104 J80 A10 TM101 076N0FK010 TRANSMITTER RC FK010 TU001 0145517006 TUNER VHF UHF TUWRF4EG 778F2 V801 098P1404B2 CRT W DY A34AGT13X98 L X101 100CT4R013 CRYSTAL HC 49 U S X601 100CT4R408 CRYSTAL HC 49 U X602 100CT3R509 CRYSTAL HC 49 U RESISTOR RC CARBON RESISTOR CAPACITORS CC CERAMIC CAPACITOR CE ALUMI ELECTROLYTIC CAPACITOR CP POLYESTER CAPACITOR CPP POLYPROPYLENE CAPACITOR CPL PLASTIC CAP...

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