Onkyo-TX-8255-Schematic 电路图 维修手册.pdf
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1、TX-8255 BLOCK DIAGRAM TX-8255 SPA SPBTHERM PRO -B1 E +B1 UP DOWN STB DATA CL TUNL FLAC2 FLAC1 -VP MUT REMIN FLDRST FLDCS FLDCLK FLDSDO +B3 -B3 TMUT PLLCLK PLLSDO STEREO SD RDSCLK RDSDAT POW +5.6V +5V_MPU +5V_CPU +5V_CPU +12V -12V TU-L RI IRIN IROUT K0 K1 K2 KEYINT0 KETINT1 KEYINT2 K3 KEYINT3 LEDSTBY
2、 FLAC1 FLAC2 +5.6V Q525, 526 Q581, 582 PROTECT TO POWER AMP 120V PRIMARY THERMAL SENSOR Q855 VOLTAGE REGURATOR PHONO EQULIZER Q301 PHONO OUT IN TAPE 1 CD PLAY1 V1 LINE 1 /DVD IN V2REC V2PLAY TUNER PLAY2 REC2 OUT IN TAPE 2 LINE 2 IN AUDIO IN / OUT MOTOR DRIVE Q481 DISPLAY CONTROL MAIN MICROPROCESSOR
3、Q601 FL DRIVER Q851 FL DISPLAY Q852 FM/AM(RDS) TUNER UNIT CONTROL KEYS TO SELECTOR & PHONO EQ. Q302 PHONO CD REC1 SELECTOR 240V Q591 RELAY DRIVE Q592 RELAY DRIVE POWER AMP. RL901 PRI. RELAY F903 OUTLET AC IN P501 SPEAKERS A SPEAKERS B RL591 SP. A RELAY RL592 SP. B RELAY P503 PHONES C916 D911 Q921 Q9
4、22 D920 F901 Q912 R641 VOLUME Q491 MUTING R393 BALANCE F902 D920 T902 SUB TRANS. C915 REMOTE SENSOR RI IR IN IR OUT STANDBY Q402 R409 BASS Q401 R415 TREBLE S901 NC THERMAL FUSE T901 Q706 D915 - 918 MAIN TRANS. +12V -12V M30622MWP U851 M66005 TC9273CNG TA7291S NJM2068 NJM2068 F902 - MPP type only F90
5、1 - MDC type only P910 P901 Q701 C709 C704 BACKUP A 1 2 3 4 5 BCDEFGH RadioFans.CN 收音机爱 好者资料库 http:/receiverfaq.ru/ TX-8255 BLOCK DIAGRAM TX-8255 SPA SPBTHERM PRO -B1 E +B1 UP DOWN STB DATA CL TUNL FLAC2 FLAC1 -VP MUT REMIN FLDRST FLDCS FLDCLK FLDSDO +B3 -B3 TMUT PLLCLK PLLSDO STEREO SD RDSCLK RDSDA
6、T POW +5.6V +5V_MPU +5V_CPU +5V_CPU +12V -12V TU-L RI IRIN IROUT K0 K1 K2 KEYINT0 KETINT1 KEYINT2 K3 KEYINT3 LEDSTBY FLAC1 FLAC2 +5.6V Q525, 526 Q581, 582 PROTECT TO POWER AMP 120V PRIMARY THERMAL SENSOR Q855 VOLTAGE REGURATOR PHONO EQULIZER Q301 PHONO OUT IN TAPE 1 CD PLAY1 V1 LINE 1 /DVD IN V2REC
7、V2PLAY TUNER PLAY2 REC2 OUT IN TAPE 2 LINE 2 IN AUDIO IN / OUT MOTOR DRIVE Q481 DISPLAY CONTROL MAIN MICROPROCESSOR Q601 FL DRIVER Q851 FL DISPLAY Q852 FM/AM(RDS) TUNER UNIT CONTROL KEYS TO SELECTOR & PHONO EQ. Q302 PHONO CD REC1 SELECTOR 240V Q591 RELAY DRIVE Q592 RELAY DRIVE POWER AMP. RL901 PRI.
8、RELAY F903 OUTLET AC IN P501 SPEAKERS A SPEAKERS B RL591 SP. A RELAY RL592 SP. B RELAY P503 PHONES C916 D911 Q921 Q922 D920 F901 Q912 R641 VOLUME Q491 MUTING R393 BALANCE F902 D920 T902 SUB TRANS. C915 REMOTE SENSOR RI IR IN IR OUT STANDBY Q402 R409 BASS Q401 R415 TREBLE S901 NC THERMAL FUSE T901 Q7
9、06 D915 - 918 MAIN TRANS. +12V -12V M30622MWP U851 M66005 TC9273CNG TA7291S NJM2068 NJM2068 F902 - MPP type only F901 - MDC type only P910 P901 Q701 C709 C704 BACKUP A 1 2 3 4 5 BCDEFGH RadioFans.CN 收音机爱 好者资料库 TX-8255 BLOCK DIAGRAM SPA SPBTHERM PRO -B1 E +B1 UP DOWN STB DATA CL TUNL FLAC2 FLAC1 -VP
10、MUT REMIN FLDRST FLDCS FLDCLK FLDSDO +B3 -B3 TMUT PLLCLK PLLSDO STEREO SD RDSCLK RDSDAT POW +5.6V +5V_MPU +5V_CPU +5V_CPU +12V -12V TU-L RI IRIN IROUT K0 K1 K2 KEYINT0 KETINT1 KEYINT2 K3 KEYINT3 LEDSTBY FLAC1 FLAC2 +5.6V Q525, 526 Q581, 582 PROTECT TO POWER AMP 120V PRIMARY THERMAL SENSOR Q855 VOLTA
11、GE REGURATOR PHONO EQULIZER Q301 PHONO OUT IN TAPE 1 CD PLAY1 V1 LINE 1 /DVD IN V2REC V2PLAY TUNER PLAY2 REC2 OUT IN TAPE 2 LINE 2 IN AUDIO IN / OUT MOTOR DRIVE Q481 DISPLAY CONTROL MAIN MICROPROCESSOR Q601 FL DRIVER Q851 FL DISPLAY Q852 FM/AM(RDS) TUNER UNIT CONTROL KEYS TO SELECTOR & PHONO EQ. Q30
12、2 PHONO CD REC1 SELECTOR 240V Q591 RELAY DRIVE Q592 RELAY DRIVE POWER AMP. RL901 PRI. RELAY F903 OUTLET AC IN P501 SPEAKERS A SPEAKERS B RL591 SP. A RELAY RL592 SP. B RELAY P503 PHONES C916 D911 Q921 Q922 D920 F901 Q912 R641 VOLUME Q491 MUTING R393 BALANCE F902 D920 T902 SUB TRANS. C915 REMOTE SENSO
13、R RI IR IN IR OUT STANDBY Q402 R409 BASS Q401 R415 TREBLE S901 NC THERMAL FUSE T901 Q706 D915 - 918 MAIN TRANS. +12V -12V M30622MWP U851 M66005 TC9273CNG TA7291S NJM2068 NJM2068 F902 - MPP type only F901 - MDC type only P910 P901 Q701 C709 C704 BACKUP A 1 2 3 4 5 BCDEFGH RadioFans.CN 收音机爱 好者资料库 TX-8
14、255 SCHEMATIC DIAGRAMS-1 AMPLIFIER SECTION TX-8255 DATA CLK POFF2 TU_L TU_R SE1H PROTECT PROTECT STB VOL_UP SP_A SP_B SP_A SP_B DIRECT +12VA DIRECT VOL_DN AMUT MON-A MON-B +12VA 5.6V -12VA VOL_DN VOL_UP STB AMUT DATA MON-A +12VS MON-B +12VR CLK +10S FLAC2 FLAC1 FLAC1 FLAC2 -VP SE1H L2 R2 E R3 E E L3
15、 MTR+ MTR- MTRG R L R L L VIDEO TREBLE BASS VS NC OUT1 VREF IN1 GND MOTOR DRIVE BALANCE PHONO EQUALIZER SEL STB DATACL GND T2 REC T2 PLAY VSSVDD PHONO CD T1 PLAY DVD V REC V PLAY TUNER PHONO L R R L R L CD OUT TAPE 1 IN TAPE 2 R L R L R L RLGND T1 REC P918 BUS RLGND +12V -12V TU_GND TS_GND SPEAKERS
16、R LL R AB IN2 OUT2 VCC IN LINE 1/DVD IN LINE-2 IN R V_GND RLGND MPUGND RL1N4003 1SR139-100 D915,D921: GP104003E NC NAAF-8886 MPUGND To NADG-8876 SD-2 : G3 MICROPROCESSOR PCBNC D401-D404 : 1SS133 or 1SS270 Q401-Q402 : NJM2068L-D C915, 916 : 8200/56 NC ID+ ID- 2SC5197 2SA1940 +0.6V -0.6V -0.6V -55.8V
17、-22.8V +55.8V +55.8V +56.3V +56.3V -55.7V 0.6V -O ID+ ID- 2SC5197 2SA1940 +0.6V -0.6V -0.6V -55.8V -22.8V +55.8V +55.8V +56.3V +56.3V -55.7V +0.6V -O NAPS-8889 8A/125V NAPS-8887 VOLUME NAAF-8888 R413 100K C424 223Z R311 39K R313 100K R314 100K R417 1K R418 1K R575 220K C342 223Z R335 330 R336 330 R3
18、37 1M R338 1M R344 330 R345 1M R346 1M R302 1K R349 22K R343 330 R435 220K R301 1K C313 10/50 R304 56K R303 56K R305 220K R306 220K C307 100/10 R312 39K C312 182J Q301:B NJM4565D-X 6 5 7 Q301:A NJM4565D-X 3 2 8 1 4 C314 10/50 C345 223Z R350 22K C308 100/10 R318 1M R317 1M R316 330 R322 1M R321 1M R3
19、19 2.2K R324 330 R326 1M R325 1M R323 330 R330 1M R329 1M R327 2.2K R328 2.2K R331 330 R332 330 R333 1M R334 1M R407 3.3K C311 182J C301 471K C302 471K C309 682J C310 682J R307 820 R308 820 R309 470K R310 470K R401 1K C421 223J C422 223J C403 47/25 C407 47/25 R404 220K R405 22K R406 22K C392 101K C3
20、91 101K C404 47/25 R391 1K C416 220/16 C971 223Z R951 (1/2W) 2.2 C928 100/50 C931 223Z R491 47K R492 47K R436 2.2K D952 1SS133 Q302 TC9273CNG-010 1 2 3 4 5 6 7 8 9 10 11 12 13 1415 16 17 18 19 20 21 22 23 24 25 26 27 28 C423 223Z C443 NC R44210 C401 47/25 R44110 R461 100K R462 100K R451 3.3K R459 3.
21、3K R460 3.3K R452 3.3K D450 P916B D981 NC D982 NC Q492 RN1241-A Q592 DTC123JS Q591 DTC123JS R411 1.2K R595 10(1/2W) C402 47/25 R402 1K R408 3.3K C408 47/25 R392 1K R599 390(1W) R598 390(1W) R457 3.3K C455 47/25 C435 NC Q402:A 3 2 8 1 4 Q491 RN1241-A C456 47/25 R458 3.3K C428 NC C429 NC Q401:B 6 5 7
22、Q401:A3 2 8 1 4 R403 220K P301 P302 D983 C981 NC C591 103J C592 103J D591D592 RL592 5 2 16 3 4 P501 R414 100K C442 4.7/50 C436 NC R315 330 R320 2.2K C319 NC C320 NC C323 NC C324 NC P915B P917A NC C341 223Z J594 NC P917C NC R952 (1/2W)2.2 P917D NC J593 D951 NC J591 J592 Q925 NC C433 103J C434 103J C4
23、12 47/25R4121.2K C411 47/25 P914B RL450 RL921 C343 223Z J596 NC R339 330 R340 330 R341 1M C329 LIST R342 1M C330 LIST P303 C459 103J C953 4.7/50 + RL922 R925 10(1/2W) JL261B 1 2 3 4 D921 RL1N4003 GP104003E D922 MTZJ33D Q924 2SA965-Y D954 MTZJ4.7B Q493 KRA102M D491 1SS133 C941 10/50 J103 R953 100K J1
24、01 C925 334J C919 330/35 C918 1000/35 C918A NC J902 NC J900 NC R903 NC C912 334J/50V C911 334J/50V P917B NC C305 152J C306 152J C303 47/25 C304 47/25 C441 100/16 R924 560(1/2W) R455 22K R456 22K C415 220/16 C527 47/63 C528 47/63 J102 C534 102J C532 102J C531 102J C533 102J C535 102J C536 102J Q452 D
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