Aiwa-ZL700-cs-sm维修电路原理图.pdf
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1、SERVICE MANUALDATACOMPACT DISC STEREOCASSETTE RECEIVERBASIC TAPE MECHANISM : 2ZM-3MK2 PR5NMBASIC CD MECHANISM : 6ZG-1 ZRDMEZ,KS/M Code No. 09-006-422-7R2REVISION If requiring information about the CD mechanism, see Service Manual of 6ZG-1,(S/M Code No. 09-001-338-7N2). This Service Manual is the “Re
2、vision Publishing” and replaces “Simple Manual”Z-L700 (EZ,K), (S/M Code No. 09-003-422-7T2).Z-L700Z-L700SPEAKERSYSTEMCDCASSEIVERSX-WZL700CX-ZL700 RC-ZAS12REMOTE CONTROLLERRadioFans.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 (unbalanced)Tun
3、ing range530 kHz to 1710 kHz (10 kHz step)531 kHz to 1602 kHz (9 kHz step)Usable sensitivity350 V/mAntennaLoop antennaTuning range144 kHz to 290 kHzUsable sensitivity1400 V/mAntennaLoop antennaMid-high frequency amplifier Power outputRated : 32 W + 32 W(1 kHz, T.H.D. 1 %, 8 ohms)Reference : 40 W + 4
4、0 W (8 ohms,T.H.D. 10 %, 1 kHz)DIN MUSIC POWER :80 W + 80 W Total harmonic distortion0.15 % (15 W, 1 kHz, 8 ohms,DIN AUDIO)Low frequency amplifier Power outputRated : 96 W + 96 W(75 Hz, T.H.D. 1 %, 6 ohms)Reference : 120 W + 120 W(75 Hz, T.H.D. 10 %, 6 ohms)DIN MUSIC POWER :220 W + 220 W Total harmo
5、nic distortion0.15 % (45 W, 75 Hz, 6 ohms,DIN AUDIO)InputsVIDEO / AUX IN : 310 mV (adjustable)PHONO : 400 mV (47 kohms)MIC 1,MIC 2 : 1.4 mV (20 kohms)OutputsCD DIGITAL OUT (OPTICAL)SPEAKERS HIGH FREQ : acceptspeakers of 8 ohms or moreSPEAKERS LOW FREQ : acceptspeakers of 6 ohms or moreSURROUND SPEAK
6、ERS : acceptspeakers of 8 16 ohms or morePHONES (stereo jack) : acceptsheadphones of 32 ohms or moreSPECIFICATIONSLaserSemiconductor 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 flutterUnmeasurableTrack format4 tracks,
7、 2 channels stereoFrequency responseCrO2 tape : 50 Hz 16000 HzNormal tape : 50 Hz 15000 HzSignal-to-noise ratio50 dB (CrO2 tape peak level,above 400 Hz)Recording systemAC biasHeadsDeck 1 : Playback head x 1Deck 2 : Recording / Playback / erase head x 1Cabinet type3 way, built-in subwooferSpeakersSub
8、woofer :200 mm (77/8 in.) cone typeFull range :120 mm (43/4 in.) cone typeSuper tweeter:60 mm (23/8 in.) ceramic typeImpedance6 ohms / 8 ohmsOutput sound pressure88 dB/W/mlevelDimensions260 x 495 x 355 mm(W x H x D)(101/4 x 191/2 x 14 in.)Weight8.5 kg (18 lbs 12 oz.)Power requirements230 V AC, 50 Hz
9、Power consumption240 WDimensions of main unit360 x 395.3 x 402.3 mm(W x H x D)(141/4 x 155/8 x 157/8 in.)Weightof main unit12.7 kg (28 lbs) 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,In
10、c.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 I
11、SNECESSARY 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 si
12、kkerhedsafbrydere 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
13、, 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.ATTENTIONLutillisat
14、ion 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
15、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, remove solder
16、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 capacitors
17、 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. Exchange the MIC
18、ROCOMPUTER 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 turned on.
19、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 HOLD terminal
20、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 be working
21、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 (C101, 102) e
22、ven 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 resistor at an en
23、d 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 negative (-) side
24、 (-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 case, check a
25、lso 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 STOP key + POWE
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