akira 21BHS3/CE Service Manual Download Page 1 | Manualshive

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Summary of Contents for 21BHS3/CE

Page 1: ...C C Co o ol l lo o ou u ur r r T T TV V V S S Se e er r rv v vi i ic c ce e e M M Ma a an n nu u ua a al l l...

Page 2: ...2 Model No 21BHS3CE Version 1 0 M M Mo o od d de e el l l 2 2 21 1 1B B BH H HS S S3 3 3 C C CE E E C C Ch h ha a as s ss s si i is s s U U UO O OC C C O O OM M M8 8 83 3 37 7 70 0 0...

Page 3: ...No 21BHS3CE Version 1 0 CONTENT SPECIFICATION 4 THE SURVEY 5 SIGNAL PROCESS 6 HORIZONTAL AND VERTICAL CIRCUIT 7 IC ILLUSTRATION 8 FACTORY MENU 15 CIRCUIT DIAGRAM 19 EXPLODED VIEW AND PART NAME 20 BOM...

Page 4: ...PAL Color AV NTSC System Sound B G VHF Low channel VL 48 25 to 147 25 MHz VHF high channel VH 154 25 to 463 25 MHz Channel coverage UHF channel U 471 25 to 863 25 MHz IF 38 9 MHz Video Audio L R 2set...

Page 5: ...ower supply KA5Q0765RT N611 2 CPU SIGNAL PROCESSER OM 8370 TDA9370 N301 3 Field driver STV9302A N401 4 Sound driver AN7522N N161 5 AV SWITCH TC4052BP N801 Video N121 sound 6 Memory AT24C08 N702 7 Phot...

Page 6: ...amplifier IF identify circuit and AFT circuit The demodulated signal CVBS comes from the pin 38 of OM8370 the sound signal comes from the pin 44 The internal CVBS signal needs norm identification then...

Page 7: ...ection circuit 2 Amperes for DC coupled 90 or 110 deflection systems with frame frequencies from 50 up to 120 Hz one supply voltage for the scanning and second voltage supply for the flyback are neede...

Page 8: ...8 Model No 21BHS3CE Version 1 0 IC ILLUSTRATION Fig 1 OM 8370 illustration...

Page 9: ...circuit provides a very stable and temperature independent reference voltage This reference voltage 4 0V ensures optimal performance of the analogue video processor part of the OM8370 and is used in a...

Page 10: ...in 40 CVBS input Pin 42 Y signal input Pin 43 C signal input Pin 44 Main audio output This pin is connected to the TDA9859 Pin 45 RGB signal input blanking Pin 46 Pin 47 Pin 48 RGB signal input Pin 49...

Page 11: ...11 Model No 21BHS3CE Version 1 0 Fig 2 HEF4052BP Illustration...

Page 12: ...Function table Input A1 A0 Channel On L L L Y0A ZA Y0B ZB L L H Y1A ZA Y1B ZB L H L Y2A ZA Y2B ZB L H H Y3A ZA Y3B ZB H X X NONE Notes H HIGH state the more positive voltage L LOW state the less posit...

Page 13: ...13 Model No 21BHS3CE Version 1 0 Fig 3 STV9302A Illustration Block diagram 1 Inverting input 5 VER output 2 Vcc 6 Output stage Vcc 3 Pump up out 7 Non inv Put 4 GND Fig 4 AN7522N Illustration...

Page 14: ...14 Model No 21BHS3CE Version 1 0 Fig 5 KA5Q0765RT Illustration...

Page 15: ...e ten menus totally Menu 1 to Menu 4 can be selected directly but Menu 5 to Menu 0 must be select by these steps 1 Press CALL key to call M 2 Press LOCK key then press any one numeric key from 5 to 0...

Page 16: ...nu 4 Preset value Item 50Hz 60Hz Definition OSD V 32 32 OSD vertical position OSD H 32 32 OSD horizontal position Menu 5 Item Preset value Definition MODE STANDARD Picture mode selection You can selec...

Page 17: ...he sensitivity of IF while search VOL PIN 0 0 OC gate output 1 PULL PUSH output SOFT CLIP 0 PEAK WHITE 0 CORING 0 Menu 7 Item Preset value Definition IFFS 38 9MHz IF Frequency selection DK OFF DK syst...

Page 18: ...E SCREEN ON Off Black screen On Blue screen S_VHS SW 1 0 S VHS switch 0 S VHS is independent 1 S VHS is paralleled to AV1 OFF SET 32 IF demodulator OFF SET value The default value is 32 Menu 0 Item Pr...

Page 19: ......

Page 20: ...20 Model No 21BHS3CE Version 1 0 EXPLODED VIEW AND PART NAME...

Page 21: ...ER SWITCH K501 XS1504 KDC A04 3 FUSE F501 RT1 20 AC 250V 2 5A LCLI 5 LCL 1623 LCLII 5 LCL 2012 LCL 07G LCLI 5 LCLII 5 LCL 07G LCL S1A LCL S1B LCL 07G UF2327L 253Y0R7 X01 UF1922S 133Y0R35 X01 LCL 07G 4...

Page 22: ...250V 100 4700PF 10 METALLIZED POLYERTER FILM INTERFERENCE SUPPRESSION CAPACITOR C501 C502 CBB62 AC250V 275V 300V 10nF 2 2uF PTDCA1BF7R0Q200 MZ73 11 THERMISTOR PS501 PDC7 RI40 1 2W 24M K 12 ISOLATED RE...

Page 23: ...1 0 NO PART NO LOC TYPE MODEL SPECIFICATION A51LYZ095X91 A51CPP01X01A A51LYG70X A51LYZ095X95 A51QDX993X 16 COLOUR PICTURE TUBE V901 A51QDJ420X 17 BACK COVER HIPS FRHIPS FH3 40mm min FVO HIPS FRHIPS FV...

Page 24: ......

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