Aiwa-CXNDS8-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 ZD3RNDMNSX-DS8S/M Code No. 09-008-436-3R1REVISION This Service Manual is the Revision Publishing and replaces Simple ManualNSX-DS8 (U), (S/M Code No. 09-007-436-3T1). If requiring in
2、formation about the CD mechanism, see Service Manual of AZG-1 ZD3RNDM, (S/M Code No. 09-001-335-3N8).NSXDS8SPEAKERSYSTEMCDCASSEIVERSXWNAJ86SXR275SXC605CXNDS8REMOTECONTROLLERRCZAS22URadioFans.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 (unba
3、lanced)Tuning range530 kHz to 1710 kHz (10 kHz step)531 kHz to 1602 kHz (9 kHz step)Usable sensitivity350 V/mAntennaLoop antennaMid-high frequency amplifier FrontPower output30 W + 30 W (200 Hz - 20 kHz,T.H.D. less than 1 %, 8 ohms)Total harmonic distortion0.1 % (25 W, 1 kHz, 8 ohms,DIN AUDIO )Low f
4、requency amplifierPower output90 W + 90 W (50 Hz - 200 Hz,T.H.D. less than 1 %, 6 ohms)Total harmonic distortion0.1 % (75 W, 120 Hz, 6 ohms,DIN AUDIO)Rear (Surround)33 W + 33 W (1 kHz, T.H.D. less than1%, 8 ohms)Center34 W (1 kHz, T.H.D. less than 1 %, 8ohms)InputsVIDEO1/DVD/AUX: 316 mV (adjustable)
5、VIDEO2/LD/MD: 316 mV (adjustable)MIC 1, MIC 2: 1 mV (10 kohms)DIGITAL IN: COAXIAL (VIDEO2) OPTICAL (VIDEO1) accept linear PCM signals (32 kHz, 44.1kHz and 48kHz) and Dolby Digital bit streamOutputsSPEAKER LOW FREQ:accept speakers of 6 ohms or moreSPEAKER HIGH FREQ:accept speakers of 8 ohms or moreSU
6、RROUND SPEAKERS:accept speakers of 8 ohms to 16 ohmsCENTER SPEAKER:accept speakers of 8 ohms or moreSUBWOOFER: 5 VLINE OUT: 210 mVPHONES (stereo jack): acceptsheadphones of 32 ohms or moreTrack format4 tracks, 2 channels stereoFrequency responseCrO2 tape: 50 Hz 16000 HzNORMAL tape: 50 Hz 15000 HzRec
7、ording systemAC biasHeadsDeck 1: Playback head x 1Deck 2: Recording/Playback headx 1, erase head x 1SPECIFICATIONSLaserSemiconductor 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 flutterUnmeasurablePower requirements120
8、V AC, 60 HzPower consumption225 WPower consumption inIf the power-economizing mode isstandby modeECO OFF: 42 WIf the power-economizing mode isECO ON or ECO AUTO: 0.9 WDimensions (W x H x D)260 x 329 x 389.6 mm(10 1/4 X 13 X 15 3/8 in.)Weight12.5 kg (27 lbs. 9 oz.)Speaker system3 way, built-in subwoo
9、fer (magneticshielded type)Speaker unitsSubwoofer:200 mm (7 7/8 in.) cone typeFull range:120 mm (4 3/4 in.) cone typeSuper tweeter:20 mm (13/16 in.) ceramic typeImpedance6 ohms/8 ohmsSensitivity87 dB/W/mDimensions (W x H x D)240 x 324 x 285 mm(9 1/2 X 12 7/8 X 11 1/4 in.)Weight6.0 kg (13 lbs 4 oz.)
10、Design and specifications are 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,
11、 Inc. Under license from BBE 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 W
12、ITH THE EYE TOO CLOSELY. IN 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
13、: Usynlig laserstling ved bning,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
14、somspecificeras i denna bruksanvising, 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 r
15、adiation exposure.ATTENTIONLutillisation 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 a
16、s a CLASS 1LASER product.The 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)
17、 After the connection, remove 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,
18、 C102) of the electrolytic 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 exchangin
19、g the MICROCOMPUTER. Exchange 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”,
20、 the main power cannot be 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 MA
21、IN C. B. that sets the HOLD 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 detec
22、tion circuit is judged to 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
23、electrolytic capacitors (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.22222Co
24、nnect a discharging resistor 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
25、as step33333 to the negative (-) 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
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