Toshiba 21ARF45 Service Manual Download Page 19 | Manualshive

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SCHEMATIC DIAGRAM: MAIN-1 Unit

21ARF45

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Summary of Contents for 21ARF45

Page 1: ...EFORMS 18 SCHEMATIC DIAGRAMS 19 PRINTED WIRING BOARD ASSEMBLIES 24 REPLACEMENT PARTS LIST 27 PACKING OF THE SET 34 CONTENTS SPEAKER SIZE 5 x 12 cm 2pcs VOICE COIL IMPEDANCE 16 ohm at 400 Hz ANTENNA INPUT IMPEDANCE VHF UHF 75 ohm Unbalanced TUNING RANGES VHF Channels 2 thru 13 UHF Channels 14 thru 69 CATV Channels 1 thru 125 EIA Channel Plan U S A POWER INPUT AC 120 V 60 Hz POWER RATING 90W PICTURE...

Page 2: ...to be certain that the high voltage does not exceed the specified value and that it is regulating correctly 5 Do not use a picture tube other than that specified or make unrecommended circuit modifications to the high voltage circuitry 6 When trouble shooting and taking test measurements on a receiver with excessive high voltage avoid being unnecessarily close to the receiver Do not operate the re...

Page 3: ...s mechanical insulators etc 3 To be sure that no shock hazard exists check for leakage current in the following manner Plug the AC cord directly into a 120 volt AC outlet Do not use an isolation transformer for this test Using two clip leads connect a 1 5k ohm 10 watt resistor paralleled by a 0 15µF capacitor in series with all exposed metal cabinet parts and a known earth ground such as electrica...

Page 4: ... operation of the horizontal oscillator does not stop in step 5 the circuit must be repaired before the set is returned to the customer HIGH VOLTAGE CHECK High voltage is not adjustable but must be checked to verify that the receiver is operating within safe and efficient design limitations as specified checks should be as follows 1 Connect an accurate high voltage meter between ground and anode o...

Page 5: ... as follows by key input MENU SERVICE MODE 6 AFT processing is disabled during service mode PLL setting data is set to fo data 7 All user data are set to default during service mode FAO and SPEAKER user settings are off and on respectively in service mode Energy Save is off 8 Sleep timer View timer and Off timer are inactivated in Service mode 9 Sound is muting in service mode except at Adjustment...

Page 6: ...27 64 V18 CC POS Micron 0 255 32 V19 Vertical mode 1 Chip V MUTE SERVICE 0 1 2 0 V20 SUB VOL 1 Chip A ATT 0 127 127 V21 H VCO 1 Chip H VCO 0 7 4 M01 MTS ATT MTS ATT 0 15 10 M02 MTS VCO MTS VCO 0 63 32 M03 MTS FILTER MTS FILTER 0 63 28 M04 MTS WIDEBAND MTS WIDEBAND 0 63 27 M05 MTS SPECTRAL MTS SPECTRAL 0 63 32 M06 SUB VOL MTS VOL 0 63 63 ADJUSTMENT METHOD Caution to get into the service mode one of...

Page 7: ... Increase RF AGC 1chip data when AFT input voltage is at max 0 3V point adjustment is completed 6 When adjustment completed OSD display and RF AGC self adjustment status data of EEPROM are updated 7 Intelligent monitor output and IM input mode are recovered PIF VCO 1 When there is PIF VCO self adjustment key input for adjustment item PIF VCO self adjustment is performed 2 VIF DEF 1chip is set to 1...

Page 8: ...I OFFSET 32 32 0 F23 B DRI B OFFSET B DRI OFFSET 32 32 0 F24 V FREE 1chip V FREE 0 1 0 F25 GAMMA 1chip GAMMA 0 3 0 F26 TRAP TV 1chip TRAP FINE 0 3 2 F27 TRAP AV 1chip TRAP FINE 0 3 2 F28 H FREE 1chip H FREE 0 1 0 F29 1W TV 1chip V Window 0 1 0 F30 1W AV 1chip V Window 0 1 0 F31 YLPF 1chip YSW LPF 0 1 1 F32 BS D 1chip BS DISCHARGE 0 3 0 F33 BS C 1chip BS CHARGE 0 3 0 F34 SL TV 1chip S SLICE DOWN 0 ...

Page 9: ... COL COL TEMP 1 O12 COMPONENT Without COMPONENT With COMPONENT 1 O13 AV Without AV With AV 1 O14 AV2 AV1 system AV2 system 1 O15 MTS Without MTS With MTS 1 O16 TONE CTRL Without S ADJ With S ADJ 1 O17 AUTO OFF Without AUTO OFF With AUTO OFF 1 O18 INIT LANG ENGLISH SPANISH 1 O19 SETUP FLAG NO SETUP AUTO SETUP 1 O20 FR AV Front 3 Rear AV 3 Display FRONT A V INPUTS and REAR A V INPUTS in DEMO mode 2 ...

Page 10: ...10 MODEL 21ARF45 CHASSIS LAYOUT 21ARF45 ...

Page 11: ...11 MODEL 21ARF45 BLOCK DIAGRAM MAIN Unit 21ARF45 ...

Page 12: ...12 21ARF45 ...

Page 13: ...MODEL 21ARF45 BLOCK DIAGRAM MTS MODULE Unit 21ARF45 13 ...

Page 14: ...14 21ARF45 ...

Page 15: ...15 MODEL 21ARF45 BLOCK DIAGRAM CRT Unit 21ARF45 ...

Page 16: ...tages measured with 1000µ V B W or Color signal WAVEFORM MEASUREMENT CONDITIONS 1 Photographs taken on a standard gated color bar signal the tint setting adjusted for proper color The wave shapes at the red green and blue cathodes of the picture tube depend on the tint color level and picture control 2 indicates waveform check points See chart waveforms are measured from point indicated to chassis...

Page 17: ...Vp p Vert Rate 7 6 56 Vp p Horiz Rate 8 6 40 Vp p Horiz Rate 9 4 88 Vp p Horiz Rate 0 158 Vp p Horiz Rate q 1140 Vp p Horiz Rate w 48 Vp p Vert Rate e 3 8 Vp p Vert Rate r 118 Vp p Horiz Rate t 440 Vp p Horiz Rate y 5 04 Vp p Horiz Rate u 5 12 Vp p Vert Rate i 112 8 Vp p Horiz Rate o 94 4 Vp p Horiz Rate p 109 6 Vp p Horiz Rate 21ARF45 ...

Page 18: ...6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit 21ARF45 18 ...

Page 19: ...A B C D E F G H 10 9 8 7 6 5 4 3 2 1 SCHEMATIC DIAGRAM MAIN 1 Unit 21ARF45 19 ...

Page 20: ...17 16 19 18 15 14 13 12 11 10 21ARF45 20 ...

Page 21: ...A B C D E F G H 10 9 8 7 6 5 4 3 2 1 SCHEMATIC DIAGRAM MTS Unit 21ARF45 21 ...

Page 22: ...00578 IC1001 RH IXA983WJZZ X RU3AMLF C4 AD500513 IC1003 VHIBR24L04F 1Y X BR24L04F WE2 AD500575 Q201 VS2SC2735 1EY X 2SC2735 AD500430 Q601 VS2SC2235Y 1E X 2SC2235 Y AD500617 U Q602 VSTT2140 F X TT2140LS AD500621 Q603 VS2SC3198 G 1 X 2SC3198 G AD500431 Q604 VS2SD601AR 1Y X 2SD601AR AD500434 Q751 VS2SD468 C 1 X 2SD468ACTZ AD500619 Q752 VS2SD468 C 1 X 2SD468ACTZ AD500619 Q753 VS2SC3198 G 1 X 2SC3198 G...

Page 23: ...500533 C436 VCKYCY1EF104ZY X 0 1 25V Ceramic AD500292 C437 VCE9GA1HW106M X 10 50V EL AD500535 C438 VCEA0A1CW106M X 10 16V EL AD500261 C439 VCKYCY1HF103ZY X 0 01 50V Ceramic AD500304 C452 VCE9GA1CW106M X 10 16V EL AD500533 C505 VCEA0A1HW107M X 100 50V EL AD500271 C508 VCFYAA2AA224J X 0 22 100V M Poly AD500555 C511 VCEA0A1VW477M X 470 35V EL AD100136 C512 VCKYPA2HB102K X 1000p 500V Ceramic AD500309 ...

Page 24: ...0 VRS CY1JF000JY X 00 1 16W M Ox AD100552 RJ101 VRS CY1JF000JY X 00 1 16W M Ox AD100552 R201 VRS CY1JF101JY X 100 1 16W M Ox AD500383 R202 VRS CY1JF101JY X 100 1 16W M Ox AD500383 R205 VRS CY1JF680JY X 68 1 16W M Ox AD500411 R206 VRS CY1JF122JY X 1 2k 1 16W M Ox AD500388 R207 VRS CY1JF221JY X 220 1 16W M Ox AD500393 R208 VRS CY1JF331JY X 330 1 16W M Ox AD100268 R209 VRS CY1JF392JY X 3 9k 1 16W M O...

Page 25: ... RA2BE271JY X 270 1 8W Carbon AD500586 Ref No Part No Description Code R1024 VRS CY1JF101JY X 100 1 16W M Ox AD500383 R1027 VRS CY1JF104JY X 100k 1 16W M Ox AD500386 R1031 VRD RA2BE101JY X 100 1 8W Carbon AD500335 R1032 VRS CY1JF103JY X 10k 1 16W M Ox AD500385 R1034 VRS CY1JF103JY X 10k 1 16W M Ox AD500385 R1035 VRD RA2BE101JY X 100 1 8W Carbon AD500335 R1036 VRS CY1JF103JY X 10k 1 16W M Ox AD5003...

Page 26: ...N0561CEZZ X plug 5 pins AD500173 SC851 QSOCV0933CEZZ X Socket CRT AD500490 IC3001 VHICXA2194Q 1Y X CXA2194Q AD500576 Q3001 VS2SD601AR 1Y X 2SD601AR AD500434 Q3002 VS2SD601AR 1Y X 2SD601AR AD500434 Q3004 VS2SD601AR 1Y X 2SD601AR AD500434 Q3005 VS2SD601AR 1Y X 2SD601AR AD500434 Q3006 VS2SD601AR 1Y X 2SD601AR AD500434 Q3007 VS2SD601AR 1Y X 2SD601AR AD500434 C3001 VCE9GA1HW475M X 4 7 50V EL AD500256 C...

Page 27: ... VRS CY1JF103JY X 10k 1 16W M Ox AD500385 R3084 VRS CY1JF103JY X 10k 1 16W M Ox AD500385 R3085 VRS CY1JF103JY X 10k 1 16W M Ox AD500385 P3007 QPLGZ0610CEZZ X plug 6Pin AD500489 P3008 QPLGZ0610CEZZ X plug 6Pin AD500489 P3009 QPLGZ0810CEZZ X plug 32 AD500175 U ACC701 QACCZA020WJPZ X AC Cord AD500146 VSP1205PB09WA X speaker AD500620 LHLDK0014PEZZ X AC Cord holder AD500450 LHLDZA096WJZZ X BONDING RIB ...

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