Onkyo-K505TX-tape-sch维修电路原理图.pdf

K-505TX Ref. No . 3675 SERVICE MANUAL STEREO CASETTE DECK MODEL K-505TX R SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ON THE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBER APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE STEREO CASSETTE TAPE DECK CASSETTE LOADING MECHANISM STANDBY / ON STANDBY ALBUM FADE DOLBY NR REV. MODE COUNTER RESET REC LEVEL K- 505X SUPP,SUPT SUDT Silver models 230V AC,50Hz 120V AC,60Hz 052001 RadioFans.CN 收音机爱 好者资料库 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 Signal 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: 80 mV Input impedance: 50 kohms Output Jacks LINE OUT: 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 120 V, 60 Hz Power consumption 12 W (230-240 V, 50 Hz) 14 W (120 V, 60 Hz) Dimensions 205 mm 76 mm 278 mm (Width Height Depth) Weight 2.6 kg Specifications and external appearance are subject to change without notice as a result of product improvement. 1. Replacing the fuse This symbol located near the fuses indicates that the fuse used is fast operating type. For continued protection against fire hazard, replace with same type fuse. For fuse rating refer to the marking adjacent to the symbol. Ce symbole indique que le fusible utlise est a rapide. Pour une protection permanente, nuntiliser que fusibles de meme type. Ce darnier est la qu le present symbol est appse. CIRCUIT NO. PART NO. DESCRIPTION F901 2520742A-SE-EAK,Fuse SERVICE PROCEDURES SPECIFICATIONS K-505TX RadioFans.CN 收音机爱 好者资料库 BLOCK DIAGRAM Q101 Q103.Q104 R115.R116 Q102 P.B.AMP. P.B. LEVEL Q201 DOLBY NR. REC EQ. METER AMP DISPLAY Q709 KEY CONTROL MECHA AND DRIVER TAPE SPEED R716 S717 AUTO ADJUSTMENT START KEY MICROPROCESSOR Q701 Q905 5V (for MICROPROCESSOR) Q901 Q903 Q906 12V(for SIGNAL) 12V(for MECHA) -22V(for F.L. TUBE) D901.D902 T901 D905.D906 POWER TRANSFORMER AND REGULATOR Q401-Q405 L401.L402.L403 BIAS OSC AND HX PRO ERASE HEAD R/P HEAD IN OUT LINE 70/120 K-505TX RadioFans.CN 收音机爱 好者资料库 U1 U2 P101 T901 U3 U5 Z001 P705 P702 P902A U6 U4 P703 EXPLODED VIEW F901 K-505TX RadioFans.CN 收音机爱 好者资料库 REF.NO.PART NO.DESCRIPTION 127100334A Chassis 227175323 Leg 327175325 Leg 4838130088 3TTB+8B.Self tapping screw 527190897 KGLS-3S.Holder 627301394 HL-18-0.Clamp 727191045 KGPS-3.5S.Holder 828140020 9830440069 4TTC+6C(BC).Self tapping screw 1027150407B Shield plate 1127300750 S-RELIEF #2271.Bushing cord 1227191137 ML Holder 1327191138 MR Holder 14833130100 3TTP+10P.Self tapping screw 1527122849 Rear panel 16838430088 3TTB+8B(BC).Self tapping screw 1727111214 Front bracket 1828141456 Cushion 1927212314 Front panel 2028135247Y Badge 2128198864 Facet 2328191796A Clear plate 2428184795 Cover 2528141470 Cushion 26838930088 3TTB+8B(UN).Self tapping screw 2728148476 (TRAY).Door P101 2009990659 NSAS-14P0919.Socket AS P702 20022392635ANSAS-26P0918.Socket AS P703 2009990469 NSAS-10P0623.Socket AS P705 204319013 NCFC3-19013.F.F.C P902A253193HIT AS-CEE. Power supply cord 253277MIL AS-UC-2#18.Poewr supply cord T901 2301298 NPT-1314P.Power transformer 2301297 NPT-1314D.Power transformer U11N281546-1ANAAR-7146-1A.Main cuircuit PC board assy 1N281546-1BNAAR-7146-1B,Main circuit PC board assy U21N281547-1ANAAF-7147-1A,Playback amp. PC board assy 1N281547-1BNAAF-7147-1B,Playback amp. PC board assy U31N281548-1ANAAF-7148-1A,Dolby circuit PC board assy 1N281548-1BNAAF-7148-1B,Dolby circuit PC board assy U41N281549-1ANAAF-7149-1A,Recording amp. PC board assy 1N281549-1BNAAF-7149-1B,Recording amp. PC board assy U51N281550-1ANAPS-7150-1A,Power transformer PC board assy 1N281550-1BNAPS-7150-1B,Power transformer PC board assy U61N281551-1ANADIS-7151-1A,Display circuit PC board assy 1N281551-1BNADIS-7151-1B,Display circuit PC board assy Z001 244247 CMAL2Z7.Deck mechanism F901 252074 2A-SE-EAK,Fuse PARTS LIST K-505TX RadioFans.CN 收音机爱 好者资料库 C F REC PACK R REC METAL Loading mechanism Cassette mechanism MECHANISM EXPLODED VIEW PARTS LIST REF. NO PART NO.DESCRIPTION 1 FF18W-12 Belt F/R 2 FF19H-11Main belt 3 F567-626 Control circuit PC board 4 FR24S-11 Flywheel assy 5 F513-870 Recording/Play head 6 F514-129 Pinch roller R 7 F514-130 Pinch roller L 8 F522-048 Clutch(Flywheel) 9 F522-052 Clutch 10 F525-327 Main motor 21 F564-640 Loading motor 22 UE15S-14 SPPB11,Micro switch 23 UE18P-21 SPPB2A,Leaf switch 24 FF19L-12 Loading belt 25 F527-078 Cassette holder MECHANISM EXPLODED VIEW K-505TX RadioFans.CN 收音机爱 好者资料库 MAIN CIRCUIT PC BOARD(NAAR-7146-1A/1B)CIRCUIT NO. PART NO.DESCRIPTION CIRCUIT NO. PART NO.DESCRIPTIONC913 374721044ECQ-V50V-104J ICsC914,C915354741019 Q701 22241605R3TMP87CH14F-3CV2C916354741009 Q702 22241609R2BR93LC46F-WE2Resistors Q707 22240239TA7291SR716 5210258N06HR1KBC,Trimming Q905 22278005578M05HFR723,R72849163272404RM1/10IJ-2.7K*4,Array TransistorsR901,R9024535347945%,1/2W,Metal Q601,Q7032213354 or2SA933S-R orR909,R91044352100410 22133552SA933S-SPush switches Q704,Q710221281 orDTC114YS orS71725035699NPS-111-S662 Q712,Q7132213570RN1207Sockets Q705,Q7062212853 or2SB1068-K orJL901B25050269NSCT-5P97 22128552SB1068-UP1022009990473NSAS-12P0627 Q708,Q7112213090 orDTA114YS orP705A25051826NSCT-19P1613 2213590RN2207P601 2009990499NSAS-6P0653 Q901,Q9032202724 or2SB1569A-D orPlugs 22027252SB1569A-EP201A25055806NPLG-17P762 Q902,Q9042213284 or2SC1740S-R orP202A25055706NPLG-10P662 22132852SC1740S-SP203A25055701NPLG-5P657 Q90622115042SA950-YP204 25045305NPJ-4PDBL164 Q907,Q9082211705 or2SD655-E orP402A25055709NPLG-13P665 22117062SD655-FP701 25045330NPJ-2PDBL184 DiodesP702A25055157NPLG-13P141 D701,D703223163 or1SS133 orP703A25055149NPLG-5P133 D7062232051SS270AP704B25055444NPLG-6P426 D702224470472MTZJ4.7BHeat sink D708,D910224470562MTZJ5.6BQ901A,Q903A27160211-1RAD-68B D901,D90222380035 orGP104003E orPan head 22380260RL1N4003Q901B,Q903B821430103P+10FN(BC) D903,D904224471203MTZJ12C D905,D90622380035 orGP104003E orPLAYBACK AMP.PC BOARD(NAAF-7147-1A/1B) 22380260RL1N4003ICs D907 224471603MTZJ16CQ101 22240147MPC1330HA D908,D909223163 or1SS133 orQ102 222905MPC1228HA 2232051SS270ATransistors OscillatorQ103,Q104221299 orDTC114TS or X701 3010190CST8.00MTW2213600RN1211 CapacitorsCapacitors C701,C912354780479C101,C102374726814ECQ-B50V-681J C705354741019C103,C104391980227 C903,C904374721044C105,C106374728224 C905 391954727C107,C108391941017 C906,C908354742219C109,C110354741009 C907391941027C111,C112374721834 C909 391941027C113 391944717 C910 354762209C114 354741009 C911 354781019Resistors R115,R1165210265N06HR50KBC,Trimming R117 443521214 Sockets P102,P1032009990473NSAS-12P0627 Plugs P101A25055136NPLG-6P120 K-505TX NOTE : THE COMPONENTS IDENTI FIED BY MARK ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK . REPLACE ONLY WITH PART NUMBER SPECIFIED. PARTS LIST e RadioFans.CN 收音机爱 好者资料库 DOLBY CIRCUIT PC BOARD(NAAF-7148-1A/1B) CIRCUIT NO. PART NO.DESCRIPTIONCIRCUIT NO. PART NO.DESCRIPTION ICsCapacitors Q201 22241144R3HIHA12169FBC401-C408371121034MY92-50V-103J TransistorsC409,C410370131014APS100V-101J Q203,Q2042213090 orDTA114YS orC411,C412370131214APS100V-121J 2213590RN2207C413354741019 Q205,Q2062211705 or2SD655-E orC414,C419354744709 22117062SD655-FC415354742219 Q207221281 orDTC114YS orC416,C417371124724 2213570RN1207C418 371122234 DiodesC420 370131234 D201,D202223163 or1SS133 orC422354741009 2232051SS270AC427 371121834 D203224470472MTZJ4.7BResistors CoilsR410 443524704475%,1/2W,Metal oxide L203,L204233407NMC-6079R413,R719443521004105%,1/2W,Metal oxide CapacitorsSockets C203-C208374722224P1032009990473NSAS-12P0627 C209-C214374721044P402 25051238NSCT-13P1028 C215,C216354780109Plugs C217,C218354780229P401 25055233NPLG-2P217 C219,C220354780109Holders C221-C232354741009E811 27190608-1(CRAMP) UA-0 V0 C233-C237354780479 C238 354780109POWER TRANSFORMER PC BOARD(NAPS-7150-1A/1B) C239,C240374721044Capacitors C241,C242354741009C901,C902374721044ECQ-V50V-104J C243391941027Sockets C246 374721534P903 25051637NSCT-2P1424 C247 37472394425051990NSCT-2P1777 SocketsPlugs P201 25051528NSCT-17P1315P902 25055676NPLG-2P632 P202 25051235NSCT-10P1025Fuse holders P203 25051230NSCT-5P1020F901A,F901B 25052133NSCT-1P2031 PlugsWire holders P205 25055689NPLG-2P645JL901A25051109NSCT-5P896 RECORDING AMP. PC BOARD(NAAF-7149-1A/1B)DISPLAY CIRCUIT PC BOARD(NADIS-7151-1A/1B) ICFL tube Q401 222959MPC1297CAQ709 212129BJ254GK TransistorsDiodes Q402221281 orDTC114YS orD704223163 or1SS133 or 2213570RN12072232051SS270A Q40322115042SA950-YD705 225338SLR-332VR Q404,Q40522018832SC1213-CD707 224470432MTZJ4.3B Q601,Q7032213354 or2SA933S-R orPush switches 22133552SA933S-SS701-S71625035699NPS-111-S662 DiodeSockets D601223163 or1SS133 orP704A2009990470NSAS-12P0624 2232051SS270AP705B25051991NSCT-19P1778 Coils L401,L402231127NCH-4183 L403 231215NLO-2059 L405,L406231085NCH-2133 NOTE : 230V model only 120V model only K-505TX RadioFans.CN 收音机爱 好者资料库 ADJUSTMENT PROCEDURES PRECAUTIONSTEST EQUIPMENT/TOOL REQUIRED 1. Before adjustment, clean the following partsAudio Oscillator with an alcohol moistened swab.Digital frequency counter *recording/playback head *erase headOscilloscope *pinch roller *capstanAttenuator 2. Do not use magnetized screwdriver for AC voltmeter adjustment.Non-magnetic screwdriver 3. Demagnetize recording/playback head withTest tapes a head demagnetizer.TCC-153:10kHz, -15dB MTT-111N:3kHz,-10dB MTT-150:Dolby level calibration 400Hz, tone 200nWb/m Item Connection of instrument Line output level/freq. Test tape Mode Output indicator Adjustme nt point AdjustmentRemarks 1 Tape speed Frequency counter to P205 or LINE OUT terminal. MTT- 111N PB Frequency counter R7163010Hz 2 Head azimuth AC voltmeter & oscilloscope to P205 TCC-153PB AC voltmeter Fig.1 Maximum level & same phase at channels L & R Refer to Fig.2. 3 Playback level AC voltmeter to P205 MTT- 150 PB AC voltmeter R115 (L ch.) R116 (R ch.) 300mV 4 Bias frequency Frequency counter to lead wire of erase head Normal tape REC Frequency counter L40385kHz 5 Auto Rec adjustment Normal tape REC/PBAuto(S717) Push a auto-adjust button(S717) Blank tapes NormalUD- C-90PLAY torque .3070g/cm (Use the test tape TW-2231.) HighUD- C-90FF/REW torque .80180g/cm (Use the test tape TW-2111.) Metal XS C-60Back tension . 26g/cm (Use the test tape TW-2111.) K-505TX RadioFans.CN 收音机爱 好者资料库 D902 D901 R716 S717 L403 NCAR-7146 25137146 25137149 NCAF-7149 NCAF-7148 25137148 NCAF-7147 25137147 0 0 RCH LCH LCH RCH R115 R116 P205 ONKYO ONKYO MAIN CIRCUIT PC BOARD PLAYBACK AMP. PC BOARD DOLBY CIRCUIT PC BOARD RECORDING AMP. PC BOARD ADJUSTMENT POINT K-505TX REVFWD Rec/Playback head 0 deg.45 deg. 90 deg.180 deg. PHASE CHART RadioFans.CN 收音机爱 好者资料库 47K 220K SYSTEM BUS -20V 5V 11.5V 11.5V 5V 5V 11.5V 1.8K 1K 820 470 390 1K 820 470 390 STBY ALBUM FADE VR DOWN C.RESET OPEN/CLOSE VR UP DOLBY NR REV.MODE REC/PAU AUTO SPACE 1K 820 470 390 REW FF R.PLAY F.PLAY STOP 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 64 63 62 61 60 59 58 57 56 55 54 53 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 AIN3 AIN2 AIN1 AIN0 70/120 LINEMUTE OSCOUT 400Hz/12kHz DOLBYRESET RECMUTE OPENSW CLOSESW RIOUT RIIN TC2 PPG DVOA INT2 INT1 SCK SI SO CS STB TEST VSS XIN XOUT RESET XTIN XTOUT INTO G10 G11 G12 G13 G14 G15 VDD VAREF VASS K1 K2 K3 K4 G9 G8 S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 INT3 DVOB VKK Q709 BJ254GK F.L. TUBE Q601 Q711 R-REC SW MECHA METAL POSITION SW MECHA F-REC SW MECHA Q702 BR93LC46F-WE2 Q201 HA12169FB DOLBY DECODER X701 8MHz Q710 CASSETE IN SW MECHA PLAY SW MECHA HIGH POSITION SW MECHA CAPSTAN- MOTOR MECHA SOLENOID MECHA Q707 TA7291S ROT SENSOR MECHA LOAD OUT MECHA LOAD IN MECHA Q203.Q204 Q205.Q206 Q102 Q201 Q101 L401 L402 Q401 MAICROPROCESSOR CONNECTION DIAGRAM K-505TX SYSTEM RESET MOTOR DRIVE TRAY MOTOR DRIVER POWER FAILURE DET. RadioFans.CN 收音机爱 好者资料库 MICROPROCESSOR TERMINAL DESCRIPTIONS Pin I/O TerminalDescriptionPin I/O TerminalDescription No.No. 1 OGRID2 33 OCAPSTANCapstan control Grid output pinActive high 2 OGRID134 OSOLENOIDSolenoid control Active high 3 OSEG135 OOPEN Door control. 4 OSEG236 OCLOSE 5 OSEG337 IRSENSORRotate sensor 6 OSEG438 IRIINSystem code input pin 7 OSEG5Segment output pin39 ORIOUTSystem cord output pin Active low 8 OSEG640 ICLOSESWDoor close detect. Active low 9 OSEG741 IOPENSWDoor open detect. Active low 10 OSEG842 ORECMUTEREC Mute control. Active high 11 OSEG943 ODOLBYRESETDolby IC reset. Active low 12 OSTBYLEDControl of Standby LED44 O400Hz/12kHzSwitched 400Hz/12kHz OSC port.Active high 13 OFILAMENTSwitched Filament45 OOSCOUTOsc output 400Hz/12kHz Active high 14 IDCHECKDoor open46 OLINEMUTELine muting. Active low 15 IPOFFPower failure port.47 O70/120Tape select port. 16 IPRECINHSWCassette pack detect48 OREC/PBMode select port. 17 IMETALSWMetal switch detect49 OBIASBias select Low when metalActive high 18 IFRECINHSWCassette pack detect50 ILEVELLCHA/D Control for input level (Lch) 19 IVKKPower supply for display51 ILEVELRCHA/D Control for input level (Rch) 20 OCLOCKControl for EEPROM52 IKEYIN4 21 ISINData input for EEPROM53 IKEYIN3 A/D Control 22 OSOUTData output for EEPROM54 IKEYIN2 23 OCSChip select for EEPROM55 IKEYIN1 Active high 24 OSTBStandby port56VASSRef. voltage for A/D comparater Active highGND 25TESTConnect to GND57VAREFRef. voltage for A/D comparater +5V 26VSSConnect to GND58VDD 27 IXINClock OSC (8kHz)59 OGRID8 28 OXOUTClock OSC (8kHz)60 OGRID7 29 IRESETSystem reset61 OGRID6 Grid output pin. 30 IPACKSWCassette detect switch62 OGRID5 31 IHIGHSWHigh switch detect.63 OGRID4 High when highposition 32 IPLAYSWPlay switch detect.64 OGRID3 Low when playback K-505TX RadioFans.CN 收音机爱 好者资料库 PACKING VIEW REF.NO. PART NO.DESCRIPTION 3129091888Pad A 3229091889Pad B 33290958350.515*650*550.Sheet 35282321Staple 3629110141PP Tape 372010376Pin cord AS 3820103753.5-MINI PLUG.Cord AS 3929100180T0.05*D240*W250.Bag 4029053741Carton 41 29362845 EAN Label 4329343076E(K505TX).Instruction manual 29343077U3FSI(K505TX).Instruction manual 29343079CT(K505TX).Instruction manual