Onkyo A-905TX Service Manual Download Page 2

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A-905TX

SPECIFICATIONS

PART-XX

SERVICE PROCEDURES

PART-XX

Replacing the fuses

REF.NO.

PART NO.

DESCRIPTION

This symbol located near the fuse indicates that the
fuse used is show operating type, For continued protection against
fire hazard, replace with same type fuse , For fuse rating, refer to
the marking adjest to the symbol.

Ce symbole indique que le fusible utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.

F901

252158

1.6A-UL/T-237, Fuse <DT>

252069

0.8A-SE-EAK, Fuse <PT>

F902-F904

2.5A-SE-EAK, Fuse <PT>

252075

NOTE:

<DT> : Asian model only for 120V

<PT> : Asian model only for 230V

www. xiaoyu163. com

QQ 376315150

TEL 13942296513

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

Summary of Contents for A-905TX

Page 1: ...0Hz STANDBY ON PHONES STANDBY A 905TX INTEGRATED STEREO AMPLIFIER TREBLE BASS BALANCE POWER OFF 1 2 L R PRESENCE ACOUSTIC CD MD TUNER LINE DVD TAPE CDR PC SOURCE DIRECT DIRECT DIRECT TONE INPUT ON OFF VOLUME WIDE RANGE AMP TECHNOLOGY CLOCK SLEEP EFFECT GRAPHIC EQ MODE 1 2 3 4 5 6 7 8 9 10 0 VOLUME PRESET FM AM PLAY MODE PLAY MODE REPEAT CLEAR SCROLL MEMORY REPEAT CLEAR DISC REPEAT CLEAR ACOUSTIC P...

Page 2: ...e fusible utilise est e lent Pour une protection permanente n utiliser que des fusibles de meme type Ce demier est indique la qu le present symbol est apposre F901 252158 1 6A UL T 237 Fuse DT 252069 0 8A SE EAK Fuse PT F902 F904 2 5A SE EAK Fuse PT 252075 NOTE DT Asian model only for 120V PT Asian model only for 230V www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 ...

Page 3: ...A28 A10 P701 A10 A10 A10 U3 U2 P402 P402 A46 A49 A49 A49 A49 U7 U1 U8 U5 A41 A27 A27 P801 A81 A40 A11 A11 A11 P901 P584A U10 F903 F904 F902 A47 www x i a o y u 1 6 3 c o m QQ 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 c...

Page 4: ...5531 4C NAAF 6631 4C Preamplifier circuit PC board ass y PT A54 28198925 Facet A U3 1A905532 4B NAAF 6632 4B Acoustic circuit PC board ass y DT A55 27268037 Guide A 1A905532 4C NAAF 6632 4C Acoustic circuit PC board ass y PT A56 28325133 Knob FM U4 1A905533 4B NAPS 6633 4B Power supply circuit PC board ass y DT A58 28191798 Clear plate RE 1A905533 4C NAPS 6633 4C Power supply circuit PC board ass ...

Page 5: ... 1 2W R353 1M R916 0 47 1 2W R543 100 1 2W R550 15 1 2W R582 10K R581 680 R556 82 1 2W R555 82 1 2W R351 2 2K R354 1M R352 2 2K R308 1M R307 1M R306 330 R305 330 R304 1M R303 1M R302 330 R301 330 R316 1M R315 1M R314 330 R313 330 R312 1M R311 1M R310 2 2K R309 2 2K R324 1M R323 1M R322 330 R321 330 R320 1M R319 1M R318 2 2K R317 2 2K R572 220 R568 1 8K R570 1 2K R574 220 R571 220 R567 1 8K R569 1 ...

Page 6: ... R514 3 3K R533 82 1 4W R529 1 2K 1 2W R522 22K R521 22K R731 100K R730 100K R502 56K R525 820 1 2W R598 1 2K 1 2W R597 1 2K 1 2W R450 100K R446 1M R460 10K R459 10K R721 10K R746 10K R744 560 R741 100K R504 1K R503 1K R590 33 R589 33 R578 56K R520 100K R457 100K R456 100K R455 100K R743 100K R727 330 R726 390 R577 56K R517 470 R527 820 1 2W R523 820 1 2W R501 56K R519 100K R515 2 7K R509 330 R505...

Page 7: ...D REC PLAY PROCESSOR IN OUT P304 P582 P303 P302 P301 P351A P351B P311A JL581A P591A P591B P912B P911B P592A P592B JL901B P307 P502B P502A P501B P501A P403A P401B P403B P405A P405C P461B P401A P405B SPEAKERS R L SPEARKER TERMINAL PC BOARD POWER SUPPLY PC BOARD MAIN CIRCUIT PC BOARD DISPLAY CIRCUIT PC BOARD TERMINAL PC BOARD PREAMPLIFIER CIRCUIT PC BOARD ACOUSTIC CIRCUIT PC BOARD POWER SWITCH PC BOA...

Page 8: ...150 CST4 00MGW C511 C512 354741009 10uF 16V Elect Coils C509 C510 393322217 220uF 6 3V Elect L503 L506 5597 45502 FR core C513 C514 393381007 10uF 50V Elect Capacitors C519 C522 393381017 100uF 50V Elect C301 C304 374721015 100pF 10 50V Plastic C501 C502 393382207 22uF 50V Elect C307 C308 374721015 100pF 10 50V Plastic Resistors C311 C312 374722215 220pF 10 50V Plastic R529 R530 443521224 1 2kohm ...

Page 9: ...11 L512P Power Cover DISPLAY CIRCUIT PC BOARD NADIS 6634 4B AC C951A 27301216 SB1925A PT CIRCUIT NO PART NO DESCRIPTION ICs Q707 222745955 74HC595P U701 241307 GP1U271X FUSE PC BOARD NAETC 6640 4C Transistors CIRCUIT NO PART NO DESCRIPTION Q409 Q410 2211945 2SK246 GR Fuse holders Q413 Q414 2211945 2SK246 GR F903 F904 25050065 YSH403T PT Q709 Q710 2213160 or DTC124ES or Q708 2213290 or DTC114ES or ...

Page 10: ...ight on and off when the muting circuit turns on 21 NC I No connection 22 NC 23 VOL UP O Volume control output pin 24 VOL DOWN O Volume control output pin 25 POWER 2 Power amplifier control output pin 26 INPMUT O Muting control output pin 27 NC Connect to the ground 28 NC Connect to the ground 29 NC 30 NC 31 SBASS 1 O Acoustic Presence control output pin 32 SBASS 2 O 33 SBASS 3 O 34 NC Connect to ...

Page 11: ...T SELECTOR R732 Q703 Q301 TC9273N 010 Q707 74HC595 GREEN RED Q702 TA7291S Q505 Q506 MICROPROCESSOR Q701 HD404316 E30H POWER S701 U701 D723 Q415 Q418 R459 SPEAKER RELAY SWITCH POWER FAILURE DETECTOR SOURCE DIRECT SWITCH PROTECTER DETECTOR CIRCUIT ACOUSTIC PRESENCE INDICATOR ACOUSTIC PRESENCE CIRCUIT VOLUME INDICATOR SOURCE INDICATOR DRIVER INPUT SELECTOR SYSTEM RESET BUFFER MOTOR VOLUME DRIVER IC P...

Page 12: ...ct the DC voltmeter to terminal P503 P504 3 After turn POWER to ON adjust the trimming resistors R575 R576 so that the reading of voltmeter becomes 2 0 mV 4 After adjustment attach the top cover 5 Confirm the voltage of above points after five minutes 6 When less than 2 5 mV Readjust the trimming resistors above so that the voltage becomes 3 0 mV When 2 6 mV to 4 0 mV It is not necessary to adjust...

Page 13: ...irection Line shows folding direction Procedures 1 to 5 Pin mark side Other side Pin mark www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 14: ... PAD ASSEMBLY PROCEDURES 2 ASSEMBLING OF PAD B Other side Pin mark side Pin mark www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 15: ...RES 3 INSERT PAD A TO PAD B www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 16: ...le 6 29110141 Tape 7 29053720 Carton box 8 29362820 Label EAN 10 24140456 RC 456S Remote controller 11 3010054 Battery UM 3 13 29343066 Instruction manual E 29343065 Instruction manual CT 14 29100180 Accessory bag Bottom side Bottom side www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ ...

Page 17: ... info onkyo de ONKYO CHINA LIMITED Units 2102 2107 Metroplaza Tower I 223 Hing Fong Road Kwai Chung N T HONG KONG Tel 852 2429 3118 Fax 852 2428 9039 Sales Product Planning Div 2 1 Nisshin cho Neyagawa shi OSAKA 572 8540 JAPAN Tel 072 831 8111 Fax 072 833 5222 ONKYO CORPORATION www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 Q...

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