Aiwa-NSXWV89-cs-sm维修电路原理图.pdf
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1、SERVICE MANUALDATACOMPACT DISC STEREOCASSETTE RECEIVERBASIC TAPE MECHANISM : 2ZM-3MK2 PR7NMBASIC CD MECHANISM : AZG-1 VZD3RNDMNSX-WV89HRS/M Code No. 09-006-433-5R1REVISION This Service Manual is the Revision Publishing and replaces Simple ManualNSX-WV89 (HR), (S/M Code No. 09-004-433-5T1). If requir
2、ing information about the CD mechanism, see Service Manual of AZG-1 VZD3RNDM, (S/M Code No. 09-001-335-3NG).NSXWV89MAINSPEAKERSYSTEMCDCASSEIVERREMOTECONTROLLERRCZAS08CXNWV89SXNDP84RadioFans.CN 收音机爱 好者资料库 2 Tuning range87.5 MHz to 108 MHzUsable sensitivity (IHF)13.2 dBfAntenna terminals75 ohms (unbal
3、anced)Tuning range531 kHz to 1602 kHz (9 kHz step)530 kHz to 1710kHz (10 kHz step)Usable sensitivity350 V/mAntennaLoop antennaTuning range5.730 MHz to 17.900 MHzAntennaWire antennaPower outputFrontRated: 115 W + 115 W (6 ohms, T.H.D.1 %, 1 kHz/DIN 45500)Reference: 145 W + 145 W (6 ohms,T.H.D. 10 %,
4、1 kHz/DIN 45324)Rear (Surround)Rated: 25 W + 25 W (8 ohms, T.H.D.1 %, 1 kHz/DIN 45500)Reference: 35 W + 35 W (8 ohms,T.H.D. 10 %, 1 kHz/DIN 45324)CenterRated: 30 W (8 ohms, T.H.D.1 %, 1 kHz/DIN 45500)Reference: 40 W (8 ohms,T.H.D. 10 %, 1 kHz/DIN 45324)Total harmonic distortion0.1 % (10.5 W, 1 kHz,
5、6 ohms,DIN AUDIO/Front )InputsVIDEO/AUX: 316 mV (adjustable)MD: 316 mV (adjustable)MIC 1, MIC 2:1.0 mV (10 kohms)5.1 CH INPUT (adjustable) FRONT (L,R): 330 mV REAR (L,R): 200 mV CENTER: 510 mV SUB WOOFER: 360 mVOutputsFRONT SPEAKERS:accept speakers of 6 ohms or moreSURROUND SPEAKERS:accept speakers
6、of 8 ohms to 16 ohmsor moreCENTER SPEAKER:accept speakers of 8 ohms or moreSUBWOOFER: 1.1 VVIDEO OUT: 1.0 Vp-p (75 ohms)LINE OUT: 210 mVPHONES (stereo jack): acceptsheadphones of 32 ohms or moreSPECIFICATIONSTrack format4 tracks, 2 channels stereoFrequency responseCrO2 tape: 50 Hz 16000 HzNormal tap
7、e: 50 Hz 15000 HzRecording systemAC biasHeadsDeck 1: Playback head x 1Deck 2: Recording/Playback head x 1,erase head x 1LaserSemiconductor laser ( =780 nm)D-A converter1 bit dualSignal-to-noise ratio85 dB (1 kHz, 0 dB)Harmonic distortion0.05 % (1 kHz, 0 dB)Wow and flutterUnmeasurableVideo signalNTSC
8、/PAL color format (selectable)Video dataMPEG 1Audio dataMPEG 1, LAYER 2Power requirements120 V/220230 V/240 V AC(switchable), 50/60 HzPower consumption245 WPower consumption inIf the power-economizing mode isstandby modeECO OFF: 31 WIf the power-economizing mode isECO ON or ECO AUTO: 0.9 WDimensions
9、 of main unit260 x 329 x 389.6 mm(W x H x D)Weight of main unit12.2 kgSpeaker system2 way, bass reflex (magneticshielded type)Speaker unitsWoofer:160 mm cone typeTweeter:60 mm cone typeImpedance6 ohmsSensitivity87 dB/W/mDimensions (W x H x D)240 x 324 x 245 mmWeight5.0 Kg Design and specifications a
10、re subject to change without notice. Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY”, the double-D symbol and PRO LOGIC are trademarks of Dolby Laboratories Licensing Corporation. The word BBEand the BBE symbol are trademarks of BBE Sound, Inc. Under license from BB
11、E Sound,Inc.RadioFans.CN 收音机爱 好者资料库 3 CLASS 1LASER PRODUCTKLASSE 1LASER PRODUKTLUOKAN 1LASER LAITEKLASS 1LASER APPARATThis set employs laser. Therefore, be sure to follow carefullythe instructions below when servicing.WARNING!WHEN SERVICING, DO NOT APPROACH THE LASEREXIT WITH THE EYE TOO CLOSELY. IN
12、 CASE IT ISNECESSARY TO CONFIRM LASER BEAM EMISSION.BE SURE TO OBSERVE FROM A DISTANCE OF MORETHAN 30cm FROM THE SURFACE OF THE OBJEC-TIVE LENS ON THE OPTICAL PICK-UP BLOCK.sCaution: Invisible laser radiation whenopen and interlocks defeated avoidexposure to beam.sAdvarsel: Usynlig laserstling ved b
13、ning,nr sikkerhedsafbrydere er ude af funktion.Undg udsttelse for strling.VAROITUS!Laiteen Kyttminen muulla kuin tss kyttohjeessamainitulla tavalla saataa altistaa kyt-tjnturvallisuusluokan 1 ylittvlle nkymttmllelasersteilylle.VARNING!Om apparaten anvnds p annat stt n vad somspecificeras i denna bru
14、ksanvising, kan anvndarenutsttas fr osynling laserstrlning, som verskridergrnsen fr laserklass 1.PROTECTION OF EYES FROM LASER BEAM DURING SERVICINGCAUTIONUse of controls or adjustments or performance of proce-dures other than those specified herin may result inhazardous radiation exposure.ATTENTION
15、Lutillisation de commandes, rglages ou procduresautres que ceux spcifis peut entraner une dangereuseexposition aux radiations.ADVARSELUsynlig laserstling ved bning, nr sikkerhedsafbrydereerude af funktion. Undg udsttelse for strling.This Compact Disc player is classified as a CLASS 1LASER product.Th
16、e CLASS 1 LASER PRODUCT label is located on therear exterior.Precaution to replace Optical block(KSS-213F)Body or clothes electrostatic potential couldruin laser diode in the optical block. Be sureground body and workbench, and use care theclothes do not touch the diode.1) After the connection, remo
17、ve solder shown inright figure.PICK-UP Assy P.C.BSolderRadioFans.CN 收音机爱 好者资料库 4 NOTE ON BEFORE STARTING REPAIRCharging voltage (V)Discharging Rated power (W)Parts number(C101, 102)resistor ()25-48100387-A00-247-09049-140220587-A00-232-090Note: The reference numbers (C101, C102) of the electrolytic
18、capacitors can change depending on the models. Be sure to check thereference numbers of the charging capacitors on schematic diagram before starting the discharging work.2. Check items before exchanging the MICROCOMPUTERBe sure to check the following items before exchanging the MICROCOMPUTER. Exchan
19、ge the MICROCOMPUTER after confirmingthat the MICROCOMPUTER is surely defective.2-1. Regarding the HOLD terminal of the MICROCOMPUTERWhen the HOLD terminal (INPUT) of the MICROCOMPUTER is “H” , the MICROCOMPUTER is judged to be operating correctly.When this terminal is “L” , the main power cannot be
20、 turned on. Therefore, be sure to check the terminal voltage of the HOLDterminal before exchange.When the MICROCOMPUTER is not defective, the HOLD terminal can also go “L” when the POWER AMPLIFIER has anyabnormalities that triggers the abnormality detection circuit on the MAIN C. B. that sets the HO
21、LD terminal to “L” .Good or no good judgement of the MICROCOMPUTER11111Turn on the AC main power.22222Confirm that the main power is turned on and the HOLD terminal of the MICROCOMPUTER keeps the “H” level or not.33333When the HOLD terminal is “L” level, the abnormality detection circuit is judged t
22、o be working correctly and theMICROCOMPUTER is judged to be good.1. Forced discharge of electrolytic capacitor of power supply blockWhen repair is going to be attempted in the set that uses relay circuit in the power supply block, electric potential is kept charged acrossthe electrolytic capacitors
23、(C101, 102) even though AC power cord is removed. If repair is attempted in this condition, secondary defectcan occur.In order to prevent the secondary trouble, perform the following measures before starting repair work.Discharge procedure11111Remove the AC power cord.22222Connect a discharging resi
24、stor at an end of lead wire thathas clips at both ends. Connect the other end of the leadwire to metal chassis.33333Contact the other end of the discharging resistor to thepositive (+) side (+VH) of C101. (For two seconds)44444Contact the same end of the discharging resistor as step33333 to the nega
25、tive (-) side (-VH) of C102 in the same way.(For two seconds)55555Check that voltage across C101 and C102 has decreasedto 1 V or less using a multimeter or an oscilloscope.Select a discharging resistor referring to the following table.Fig-1MAIN C.BD101C101C1022234RadioFans.CN 收音机爱 好者资料库 5 In such a
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