Aiwa-NSXSZ30-cs-sm维修电路原理图.pdf
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1、SERVICE MANUALDATACOMPACT DISCSTEREO SYSTEMBASIC TAPE MECHANISM : 6ZM-3 PR2NM / ZZM-3 YPR1NMBASIC CD MECHANISM : AZG-1NSX-SZ30NSX-SZ36HS,HTLHS/M Code No. 09-007-423-3R1REVISION If requiring information about the CD mechanism, see Service Manual of AZG-1, (S/M Code No. 09-001-335-3N8). This Service M
2、anual is the “Revision Publishing” and replaces“Simple Manual” (S/M Code No. 09-007-423-3T3).SYSTEMTAPE MECHANISMCD MECHANISMZZM-3 YPR1NMAZG-1 ZD3RDMNSX-SZ30NSX-SZ366ZM-3 PR2NMAZG-1 YZD3RDMNSX-SZ30SPEAKERSYSTEMCDCASSEIVERREMOTECONTROLLERNSX-SZ36CX-NSZ30CX-NSZ36RC-ZAS01SX-NSZ52RC-ZAS02RadioFans.CN 收音
3、机爱 好者资料库 2 SPECIFICATIONSTuning range87.5 MHz to 108 MHzUsable sensitivity (IHF)13.2 dBfAntenna terminals75 ohms (unbalanced)Tuning range531 kHz to 1602 kHz (9 kHz step)530 kHz to 1710 kHz (10 kHz step)Usable sensitivity350 V/mAntennaLoop antenna Tuning range5.730 MHz to 17.900 MHzUsable sensitivity
4、40 V (IEC)AntennaWire antennaPower outputLH:Rated: 65 W + 65 W (6 ohms, THD 1%,1 kHz)Reference: 80 W + 80 W (6 ohms,THD 10%, 1 kHz)HS,HT:Rated: 40 W + 40 W (6 ohms, THD 1%,1 kHz)Reference: 50 W + 50 W (6 ohms,THD 10%, 1 kHz)Total harmonic distortion 0.08% (25 W, 1 kHz, 6 ohms,DIN AUDIO)InputsVIDEO/A
5、UX: 500 mVHS,HT only: MIC: 1.0 mV (10 K ohms)OutputsSPEAKERS: accept speakers of6 ohms or morePHONES (stereo jack) : acceptsheadphones of 32 ohms or moreTrack format4 tracks, 2 channels stereoFrequency response50 Hz 15 kHzRecording systemAC biasHeadsDeck 1 : Playback head x 1Deck 2 : Recording/Playb
6、ack 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)Power requirementsLH,HT: 120 V/220-230 V/240 V AC(switchable), 50/60 HzHS: 220 V AC, 60 HzPower consumptionLH: 125 WHS,HT: 80 WPower co
7、nsumption in standby modeWith power-economizing mode offLH: 17 WHS,HT: 13 WWith power-economizing mode on0.9 WDimensions of main unit260 x 328 x 335 mm(W x H x D)Weight of main unit6.3 kgSpeaker system3 way, bass reflex (magneticshielded type)Speaker unitsWoofer:140 mm cone typeTweeter:60mm cone typ
8、eSuper tweeter:20 mm ceramic typeImpedance6 ohmsOutput sound pressure level 87 dB/W/mDimensions (W x H x D)240 x 324 x 270 mmWeight4.0 kg Design and specifications are subject to change without notice. The word BBEand the BBE symbol are trademarks of BBE Sound, Inc. Under license from BBE Sound,Inc.
9、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 CASE IT ISN
10、ECESSARY 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 bning,nr sikk
11、erhedsafbrydere 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 bruksanvising,
12、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.ATTENTIONLutillisatio
13、n 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.The CLASS 1 LA
14、SER PRODUCT label is located on therear exterior.Precaution to replace Optical block(KSS-213F)1) After the connection, remove solder shown inthe right figure.Body or clothes electrostatic potential could ruinlaser diode in the optical block. Be sure groundbody and workbench, and use care the clothes
15、do not touch the diode.Solder(KSS 213F)PICKUP Assy P.C.B.RadioFans.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 electrolyti
16、c 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. Exch
17、ange 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
18、 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
19、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 to
20、 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 (
21、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 resis
22、tor 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 negat
23、ive (-) 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 c
24、ase, check also if the POWER AMPLIFIER circuit or power supply circuit has any abnormalities or not.2-2. Regarding resetThere are cases that the machine does not work correctly because the MICROCOMPUTER is not reset even though the AC powercord is re-inserted, or the software reset (pressing the STO
25、P key + POWER key) is performed.When the above described phenomenon occurs, it can lead to wrong judgement as if the MICROCOMPUTER is defective and toexchange the MICROCOMPUTER. In such a case, perform the forced-reset by the following procedure and check good or nogood of the MICROCOMPUTER.11111Rem
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