Aiwa-ZHT730-cs-sm维修电路原理图.pdf
《Aiwa-ZHT730-cs-sm维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《Aiwa-ZHT730-cs-sm维修电路原理图.pdf(46页珍藏版)》请在收音机爱好者资料库上搜索。
1、SERVICE MANUALDATACOMPACT DISC STEREOCASSETTE RECEIVERBASIC TAPE MECHANISM : 2ZM-3MK2 PR5NMBASIC CD MECHANISM : 6ZG-1 ZRDMZ-HT730K, EZS/M Code No. 09-006-433-9R1REVISION This Service Manual is the Revision Publishing and replaces Simple ManualZ-HT730, (S/M Code No. 09-003-422-7T3). If requiring info
2、rmation about the CD mechanism, see Service Manual of 6ZG-1, (S/M Code No. 09-001-338-7N2).ZHT730SPEAKERSYSTEMCDCASSEIVERSXZHT730SXCR677CXZHT730REMOTECONTROLLERRCZAS05RadioFans.CN 收音机爱 好者资料库 2 SPECIFICATIONSFM tuner sectionTuning range87.5 MHz to 108 MHzUsable sensitivity (IHF)13.2 dBfAntenna termin
3、als75 ohms (unbalanced)MW tuner sectionTuning range530 kHz to 1710 kHz (10 kHz step)531 kHz to 1602 kHz (9 kHz step)Usable sensitivity350 V/mAntennaLoop antennaLW tuner sectionTuning range144 kHz to 290 kHzUsable sensitivity1400 V/mAntennaLoop antennaAmplifier sectionPower outputFrontRated: 120 W +
4、120 W(6 ohms, T.H.D. 1 %, 1 kHz)Reference: 150 W + 150 W(6 ohms, T.H.D. 10 %, 1 kHz)DIN MUSIC POWER:260 W + 260 WRear (Surround)Rated: 33 W + 33 W(8 ohms, T.H.D. 1 %, 1 kHz)Reference: 40 W + 40 W(8 ohms, T.H.D. 10 %, 1 kHz)DIN MUSIC POWER:85 W + 85 WCentreRated: 34 W(8 ohms, T.H.D. 1 %, 1 kHz)Refere
5、nce: 40 W(8 ohms, T.H.D. 10 %, 1 kHz)DIN MUSIC POWER: 85 WTotal harmonic distortion 0.15 % (60 W, 1 kHz, 6 ohms,DIN AUDIO/Front)InputsVIDEO/AUX: 310 mV(adjustable)PHONO: 400 mV (47 kohms)5.1CH INPUT (adjustable)FRONT: 240 mVSURROUND: 240 mVCENTER: 600 mVSUB WOOFER: 240 mVMIC1, MIC2: 1.4mV (20 kohms)
6、OutputsCD DIGITAL OUT (OPTICAL)SUB WOOFER: 1VSPEAKERS:accept speakers of 6 ohms or moreSURROUND SPEAKERS:accept speakers of 8-16 ohmsCENTER SPEAKERS:accept speakers of 8 ohms or morePHONES (stereo jack):accepts headphones of 32 ohms ormoreCassette deck sectionTrack format4 tracks, 2 channels stereoF
7、requency 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 1Compact disc player sectionLaserSemiconductor laser ( =780 nm)D-A conv
8、erter1 bit dualSignal-to-noise ratio85 dB (1 kHz, 0 dB)Harmonic distortion0.05 % (1 kHz, 0 dB)Wow and flutterUnmeasurableGeneralPower requirements230 V AC, 50 HzPower 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)Weight of main unit12.8 kg (28 lbs.
9、 4 oz)Speaker system SXZHT730Cabinet type3 way, bass reflexSpeakersWoofer:220 mm (83/4 in.) cone typeTweeter:60 mm (23/8 in.) cone typeSuper tweeter:20 mm (13/16 in.) ceramic typeImpedance6 ohmsOutput sound pressure level 89 dB/W/mDimensions (W x H x D)260 x 495 x 314 mm(101/4 x 191/2 x 123/8 in.)We
10、ight6.3 kg (13 lbs. 14 oz.) The word BBEand the BBE symbol are trademarks of BBE Sound, Inc. Under license from BBE Sound,Inc. Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY”, the double-D symbol and PRO LOGIC are trademarks of Dolby Laboratories Licensing Corporati
11、on. Design and specifications are subject to change without notice.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
12、NOT APPROACH THE LASEREXIT WITH 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 avo
13、idexposure to beam.sAdvarsel: 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 apparat
14、en anvnds p annat stt n vad 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 he
15、rin may result inhazardous radiation 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
16、 Disc player is classified as 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 thecloth
17、es do not touch the diode.1) 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:
18、The reference numbers (C101, 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 foll
19、owing items before exchanging 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 correctl
20、y.When this terminal is “L”, 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
21、 detection circuit on the MAIN 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”
22、level, the abnormality detection 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 potentia
23、l is kept charged acrossthe 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 procedure11111Remo
24、ve the AC power cord.22222Connect 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
25、of the discharging resistor 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.B
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- Aiwa ZHT730 cs sm 维修 电路 原理图