Onkyo-K501A-tape-sm维修电路原理图.pdf
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1、K-501A SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE MEAS
2、UREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. SERVICE MANUALSERVICE MANUAL CASSETTE TAPE DECK MODEL K-501A 230-240V AC, 50Hz 120V AC, 60Hz 220-230V AC, 50/60Hz UPP UDT UGT Ref. No. 3718 112001 RadioFans.CN 收音
3、机爱 好者资料库 K-501A SPECIFICATIONS Track format 4-tracks, 2-channels Erasing system AC erase Tape speed 4.8 cm/sec. Wow and flutter 0.1 % (WRMS) 0.2 % (DIN) Frequency response Metal position tape 30 to 15,000 Hz 3 dB High position tape 30 to 14,000 Hz 3 dB Normal position tape 30 to 13,000 Hz 3 dB Signa
4、l to noise ratio 54 dB (metal position tape, Dolby NR off) Noise reduction of 10 dB above 5 kHz and 5 dB at 1 kHz is possible with Dolby B NR. Noise reduction of 20 dB at 5 kHz is possible with Dolby C NR. Input Jacks LINE IN: 2 Input sensitivity: 500 mV Input impedance: 50 kohms Output Jacks LINE O
5、UT: 2 Standard output level: 500 mV Output load impedance: over 50 kohms Motors DC servo motor: 1 Heads REC/PB: Special Hard Permalloy: 1 Erase head: Ferrite: 1 Power supply rating AC 230-240 V, 50 Hz AC 220-230 V, 50/60 Hz AC 120 V, 60 Hz Power consumption 13 W (230-240 V, 50 Hz) (220-230 V, 50/60
6、Hz) 14 W (120 V, 60 Hz) Dimensions (W H D) 155 mm x 94 mm x 303 mm 6-1/8 x 3-11/16 x 11-15/16 (AC 230-240 V, 50Hz) (AC 220-230 V, 50/60Hz) 155 mm x 94 mm x 297.5 mm 6-1/8 x 3-11/16 x 11-11/16 (AC 120 V, 60Hz) Weight 2.5 kg, 5.5 lbs Specifications and external appearance are subject to change without
7、 notice as a result of product improvement. xx CIRCUIT NO. PART NO. DESCRIPTION F9012520742A-SE-EAK,Fuse SERVICE PROCEDURES .Europian model only .120V model only .220-230V model only RadioFans.CN 收音机爱 好者资料库 K-501A PANEL VIEW FRONT PANEL STANDBY / ON STANDBY FADEREV MODEDOLBY NR BC ALBUM CD DUBBING K
8、- 5 01A STEREO CASSETTE TAPE DECK CASSETTE LOADING MECHANISM STANDBY/ON button STANDBY indicator ALBUM button/ALBUM indicator REV MODE button FADE button/FADE indicator / Rec/Pause button , , Rec/Pause indicator Cassette in indicator Eject button Fast-forward/Rewind Skip button Forward/reverse side
9、play button Stop button Cassette slot Auto space button REV MODE indicator DOLBY NR indicator DOLBY NR button EXPLODED VIEW K-501A S1 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 U1 U2 U3 Z1 A2 A17 T901 P901A P101A P702AP702A P703A S1 S1 S1 S1 S1 S3 S4 S2 F901 K-501A PARTS LIST
10、 EXPLODED VIEW REF. NO. PART NO.DESCRIPTION A1 27111266Front bracket A2 27191165Holder (Door) A3 28198948Facet(IN) A4 28148505Door A5 27180583Spring A6 28325983Recording button assy A7 27100415Chassis A8 27191164Holder (Mechanism) A9 27300750#2271,Bushing A10 27212366Front panel A11 28198939Facet(S)
11、 A12 28198946Facet(PLAY) A13 28198947Facet(NR) A14 28184832Cover A15 28140079Cushion A16 28141492Cushion A17 28141489Cushion A18 27122947ARear panel 27122948ARear panel 27122949ARear panel A19 260208Binder F901 2520742A-SE-EAK,Fuse P101A2009990714NSAS-14P0999,Socket assy P702A20022392618NSAS-26P0998
12、,Socket assy P703A20022391010NSAS-10P0997,Socket assy P901A253334HRKAS-CEE,Power supply cord 253331HDK orAS-UC-2,Power supply cord 253330MILAS-UC-2,Power supply cord T901 2301571NPT-1434D,Power Transformer 2301572NPT-1434G,Power Transformer 2301573NPT-1434P,Power Transformer U11N283583-1BNAAF-7383-1
13、B,Main circuit PC board 1N283583-1CNAAF-7383-1C,Main circuit PC board 1N283583-1DNAAF-7383-1D,Main circuit PC board U21N283584-1BNAPS-7384-1B,Power supply PC board 1N283584-1CNAPS-7384-1C,Power supply PC board 1N283584-1DNAPS-7384-1D,Power supply PC board U31N283585-1BNADIS-7385-1B,Display circuit P
14、C board 1N283585-1CNADIS-7385-1C,Display circuit PC board 1N283585-1DNADIS-7385-1D,Display circuit PC board Z1 244248ACMAL2Z815A,Cassette Mechanism S1 8381300883TTB+8B,Self tapping screw S2 8304400894TTC+8C(BC),Self tapping screw S3 8389300883TTB+8B(UN),Self tapping screw S4 8384300883TTB+8B(BC),Sel
15、f tapping screw Note .Europian model only .120V model only .220-230V model only THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED. C F REC PACK R REC METAL REF.NO PART NO.DESCRIPTION 1FF18W-F/R belt 2FF19Y-Main belt 3F567-626S
16、witch PC board assy 4FF26K-Flywheel assy 5F513-891Recording/Play head assy 6F514-129Pinch roller R 7F514-130Pinch roller L 8F522-064Clutch 9F522-052Clutch 10FD52Y-Master cam PARTS LIST K-501A EXPLODED VIEW CASETTE MECHANISM X X D 8 0 1 - D 8 1 0 K E Y C O N T R O L & D I S P L A Y Q 7 0 4 Q 7 0 3 Q
17、7 1 3 Q 7 1 2 Q 7 0 6 Q 7 0 5 S T A R T K E Y A D J U S T M E N T A U T O S 7 1 7 E R A S E H E A D R / P H E A D M E C H A a n d D R I V E R R 7 1 6 T A P E S P E E D Q 1 0 1 L I N E O U T I N Q 7 0 1 M I C R O P R O C E S S O R L 4 0 1 , L 4 0 2 , L 4 0 3 Q 4 0 1Q 4 0 5 B I A S O S C a n d H X P R
18、 O D 9 0 5 , D 9 0 6 D 9 0 1 , D 9 0 2 T 9 0 1 a n d R E G U L A T O R P O W E R T R A N S F O R M E R Q 9 0 6 - 2 2 V ( f o r F L t u b e ) 7 0 / 1 2 0 Q 1 0 3 , Q 1 0 4 R 1 1 5 , R 1 1 6 P . B . L E V E L D O L B Y N R , R E C E Q , M E T E R A M P Q 2 0 1Q 1 0 2 P . B . A M P . Q 9 0 5Q 9 0 3 Q 9
19、 0 1 5 V ( f o r M I C R O P R O C E S S O R ) 1 2 V ( f o r M E C H A ) 1 2 V ( f o r S I G N A L ) K-501A BLOCK DIAGRAM K-501A A 1 2 3 4 5 BCD K-501A SCHEMATIC DIAGRAM 1 U1Main circuit PC board U2 Power supply circuit PC board F 9 0 1 B F U S E _ B F 9 0 1 A F U S E _ A 1 2 V 1 2 V E 8 5 4 2 2 V 1
20、 2 V 5 . 6 V P 9 0 3 P 9 0 3 A C 1 0 2 6 8 1 C 1 0 1 6 8 1 Q 2 0 1 H A 1 2 1 6 9 F B 6 1 6 2 6 3 6 4 6 6 7 5 7 7 7 8 7 9 8 0 B I A _ T R A P L1B I A _ T R A P R6 0 C C R L5C C R R 5 6 C O N T L 7 3 C O N T R 6 8 D G N D4 7 E Q C O N T L 1 3E Q C O N T R 4 8 E Q I N L 1 2E Q I N R 4 9 E Q O U T L 1 5
21、E Q O U T R 4 6 G N D 17 1 G N D 27 0 H L S L6H L S R 5 5 I R E F1 4 L L S L7L L S R5 4 L M D E T L 1 0L M D E T R 5 1 L M I N L 9L M I N R 5 2 L M O U T L 1 1L M O U T R 5 0 N N O R M1 6N RO N / O F F 4 5 P B O U T L 2P B O U T R 5 9 R E C O U T L 8R E C O U T R 5 3 R P I L P B I N7 6 R P I R P B I
22、 N6 5 S S 1 L3S S 1 R5 8 S S 2 L4S S 2 R5 7 V R I 1 L L I N E I N7 2 V R I 1 R L I N E I N6 9 V R I 2 L A C C U I N7 4 V R I 2 R A C C U I N6 7 T 9 0 1 N P T - 1 4 3 4 * 2 4 5 6 7 P 9 0 1 A X X X P 2 0 4 54 L 2 0 4 N M C - 6 0 7 9 123 6 54 L 2 0 3 N M C - 6 0 7 9 123 6 L 4 0 1 N C H - 4 1 8 3 123 46
23、 L 4 0 2 N C H - 4 1 8 3 123 46 L 4 0 3 N L O - 2 0 5 9 123 456 Q 9 0 5 7 8 M 0 5 G IO Q 9 0 3 7 8 M 1 2 G IO Q 9 0 1 7 8 M 1 2 G IO P 7 0 6 A P 7 0 6 P 9 0 2 P 9 0 1 P 4 0 1 P Q 1 0 1 M P C 1 3 3 0 H A 1 2 3 4 5 6 7 8 9 P P 1 0 1 Q 2 0 4 D T A 1 1 4 Y S Q 2 0 3 D T A 1 1 4 Y S Q 7 1 1 D T A 1 1 4 Y
24、 S D 2 0 3 U D Z S 4 . 7 B D 9 1 0 U D Z S 5 . 6 B D 9 0 2 G P 1 N 4 0 0 3 D 9 0 1 G P 1 N 4 0 0 3 D 9 0 8 1 S S 3 5 2 D 9 0 9 1 S S 3 5 2 D 7 0 6 1 S S 3 5 2 Q 4 0 3 2 S A 9 5 0 Q 2 0 5 2 S D 6 5 5 Q 2 0 6 2 S D 6 5 5 Q 4 0 4 2 S C 1 2 1 3 C Q 4 0 5 2 S C 1 2 1 3 C R 4 1 04 7 Q 7 1 0 D T C 1 1 4 Y
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