Aiwa-NSXHMT25U-cs-sm维修电路原理图.pdf

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1、SERVICE MANUALDATACOMPACT DISCSTEREO SYSTEMBASIC TAPE MECHANISM : ZZM-3 PR1NMBASIC CD MECHANISM : AZG-1 ZD8RDMNSX-DP25NSX-HMT25LHUS/M Code No. 09-004-428-0R1REVISION This Service Manual is the “Revision Publishing” and replaces “Simple Manual”CX-NHMT25 (U), (S/M Code No. 09-002-428-0T1) and CX-NDP25

2、 (LH), (S/M Code No. 09-003-428-0T2). If requiring information about the CD mechanism, see Service Manual of AZG-1, (S/M Code No. 09-001-335-3N6).NSX-DP25SPEAKERSYSTEMCDCASSEIVERREMOTECONTROLLERNSX-HMT25CX-NDP25SX-NSZ52SX-R277SX-C607CX-NHMT25RC-ZAS10SX-NAJ22SX-R275SX-C605RadioFans.CN 收音机爱 好者资料库 2 SP

3、ECIFICATIONSTuning range87.5 MHz to 108 MHzUsable sensitivity (IHF)13.2 dBfAntenna terminals75 ohms (unbalanced)Tuning range530 kHz to 1710 kHz (10 kHz step)531 kHz to 1602 kHz (9 kHz step)Usable sensitivity350 V/mAntennaLoop antennaPower outputFrontLH:Rated: 50 W + 50 W (6 ohms, THD 1%,1 kHz)Refere

4、nce: 60 W + 60 W (6 ohms,THD 10%,1 kHz)U:50 W + 50 W (50 Hz 20 kHz,THD less than 1%, 6 ohms)Rear (Surround)LH:Rated: 20 W + 20 W (8 ohms, THD 1%,1 kHz)Reference: 25 W + 25 W (8 ohms,THD 10%, 1 kHz)U:20 W + 20 W (1 kHz, THD less than 1%,8 ohms)CenterLH:Rated: 20 W (8 ohms, THD 1%, 1 kHz)Reference: 25

5、 W (8 ohms, THD 10%,1 kHz)U:20 W (1 kHz, THD less than 1%,8 ohms)Total harmonic distortion LH: 0.1% (30 W, 1 kHz, 6 ohms,DIN AUDIO/Front)U: 0.1% (25 W, 1 kHz, 6 ohms,DIN AUDIO/Front)InputsVIDEO/AUX : 300 mV (adjustable)OutputsSPEAKERS : accept speakers of 6ohms or moreSURROUND SPEAKERS : acceptspeak

6、ers of 8 ohms to 16 ohmsCENTER SPEAKER : accept speakersof 8 ohms or moreSUBWOOFER : 1.6 VPHONES (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/Playback

7、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)Speaker system3 way, bass reflex (magneticshielded type)Speaker unitsWoofer: 140 mm (5 5/8 in.) cone typeTweeter: (2 3/8 in.) 60mm cone typ

8、eSuper tweeter: 20 mm (13/16 in.)ceramic typeImpedance6 ohmsOutput sound pressure level 87 dB/W/mDimensions (W x H x D)SX-NSZ52: 240 x 324 x 270 mmSX-NAJ22: 240 x 324 x 256 mm (9 1/8 x 12 7/8 x 10 1/8 in.)WeightSX-NSZ52: 4.0 kgSX-NAJ22: 3.8 kg (8 lbs 6 oz.)Power requirementsU: 120 V AC, 60 HzLH: 120

9、 V/220 - 230 V/240 V ACswitchable, 50/60 HzPower consumptionU: 110 WLH: 125 WPower consumption in standby modewith power-economizing mode offLH: 19 WU: 20 Wwith power-economizing mode on0.9 WDimensions of main unit260 x 328 x 357.5 mm(W x H x D)(10 1/4 x 13 x 14 1/8 in.)Weight of main unit8.7 kg (19

10、 lbs 3 oz.) Design and specifications are subject to change without notice. The word “BBE” and the “BBE symbol” are trademarks of BBE Sound, Inc. Under license from BBE Sound, Inc. Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-

11、D symbol are trademarks of Dolby Laboratories Licensing Corporation.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 av

13、oidexposure 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 appara

14、ten 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 h

15、erin 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 Compac

16、t 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(KSM-880CAB)1) After the connection, remove solder shown inthe right figure.Body or clothes electrostatic potential could ruinlaser diode in the opt

17、ical block. Be sure groundbody and workbench, and use care the clothesdo not touch the diode.solderPICK-UP Assy P.C.BRadioFans.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-A00-232-09

18、0Note: 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 t

19、he following 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 c

20、orrectly.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 abno

21、rmality 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

22、is “L” 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 p

23、otential 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 procedure11

24、111Remove 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 sa

25、me end 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-1M

26、AIN C.BD101C101C1022234RadioFans.CN 收音机爱 好者资料库 5 In such a case, 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 power

27、cord is re-inserted, or the software reset (pressing the STOP 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 proc

28、edure and check good or nogood of the MICROCOMPUTER.11111Remove the AC power cord.22222Short both ends of the electrolytic capacitor C113 that is connected to VDD of the MICROCOMPUTER with tweezers.33333Connect the AC power cord again. If the MICROCOMPUTER returns to the normal operation, the MICROC

29、OMPUTER isgood.Note: The reference number or MICROCOMPUTER pin number of transistor (Q110) and electrolytic capacitor (C113) can change dependingon the models. Be sure to check the reference numbers on schematic diagram before starting the discharging work.2-3. Confirmation of soldering state of MIC

30、ROCOMPUTERCheck the soldering state of the MICROCOMPUTER in addition to the above described procedures. Be sure to exchange theMICROCOMPUTER after surely confirming that the trouble is not caused by poor soldering but the MICROCOMPUTER itself.Fig-2-2MICRO-COMPUTERMICROCOMPUTERFRONT C.BFRONT C.BVSSVD

31、DC113*%C1131815Short with tweezers.RadioFans.CN 收音机爱 好者资料库 6 ELECTRICAL MAIN PARTS LISTDESCRIPTIONREF. NO.KANRINO.PART NO.DESCRIPTIONREF. NO.KANRINO.PART NO.IC 87-A21-398-010 IC,STK490-110 87-A20-783-040 C-IC,BA7762AFS 87-A21-097-040 C-IC,M62463AFP 87-A21-452-030 C-IC,BD3876KS2 87-A21-415-010 IC,LA1

32、843 8A-NFW-601-010 C-IC,UPD780228GF-060-3BA 87-A21-482-010 IC,RPM6938-H4 87-070-127-110 IC,LC72131 D 87-A21-269-010 IC,EW732TRANSISTOR 87-026-245-080 TR,DTC114ES 87-026-609-080 TR,KTA1266GR 87-A30-198-080 TR,KTC3199GR 89-213-702-010 TR,2SB1370 (1.8W) 87-026-610-080 TR,KTC3198GR 87-A30-076-080 C-TR,2

33、SC3052F 87-A30-075-080 C-TR,2SA1235F 87-A30-318-080 TR,CSA952K 87-A30-107-070 C-TR,CMBT5401 87-A30-074-080 C-TR,RT1P 141C 87-A30-468-080 C-TR,KRC102S-RTK 87-A30-106-080 C-TR,CMBT5551 87-A30-087-080 C-FET,2SK2158 87-A30-063-080 C-TR,KRA104S 87-A30-086-040 C-TR,CSD1306E 87-A30-329-080 TR,CD1585BC 89-3

34、27-143-080 TR,2SC2714 (0.1W) 87-A30-072-080 C-TR,RT1P 144C 87-A30-234-080 TR,CSC4115BCDIODE 87-A40-548-090 DIODE,D3SBA20 87-017-447-010 DIODE,GBU4DL 87-A40-553-080 DIODE,1N4003 LES 87-A40-776-080 ZENER,UZ27BSD 87-A40-764-080 ZENER,UZ10BSC 87-070-274-080 DIODE,1N4003 SEM 87-A40-313-080 C-DIODE,MC 284

35、0 87-A40-270-080 C-DIODE,MC2838 87-A40-269-080 C-DIODE,MC2836 87-A40-854-080 ZENER, UZ15BSA 87-020-465-080 DIODE,1SS133 87-A40-752-080 ZENER,UZ6.2BSC 87-A40-760-080 ZENER,UZ9.1BSA 87-A40-747-080 ZENER,UZ5.1BSB 87-A40-745-080 ZENER,UZ4.7BSA 87-017-149-080 ZENER,HZS6A2LMAIN C.B C3 87-012-368-080 C-CAP

36、,S 0.1-50 F C4 87-012-368-080 C-CAP,S 0.1-50 F C21 87-016-495-000 CAP,E 3300-25 M SMG C22 87-016-495-000 CAP,E 3300-25 M SMG C25 87-010-382-080 CAP, ELECT 22-25V C26 87-010-382-080 CAP, ELECT 22-25V C27 87-010-382-080 CAP, ELECT 22-25V C28 87-010-382-080 CAP, ELECT 22-25V C31 87-010-263-080 CAP, ELE

37、CT 100-10V C32 87-010-197-080 CAP, CHIP 0.01 DM C33 87-010-263-080 CAP, ELECT 100-10V C34 87-010-260-080 CAP, ELECT 47-25V C35 87-010-380-080 CAP, ELECT 47-16V C36 87-010-381-080 CAP, ELECT 330-16V C38 87-010-384-080 CAP, ELECT 100-25V C39 87-010-384-080 CAP, ELECT 100-25V C40 87-010-197-080 CAP, CH

38、IP 0.01 DM C60 87-010-403-080 CAP, ELECT 3.3-50V C115 87-010-404-080 CAP, ELECT 4.7-50V C116 87-010-404-080 CAP, ELECT 4.7-50V C163 87-010-196-080 CHIP CAPACITOR,0.1-25 C171 87-012-368-080 C-CAP,S 0.1-50 F C172 87-012-368-080 C-CAP,S 0.1-50 F C173 87-012-368-080 C-CAP,S 0.1-50 F C174 87-012-368-080

39、C-CAP,S 0.1-50 F C301 87-010-318-080 C-CAP,S 47P-50 CH C302 87-010-318-080 C-CAP,S 47P-50 CH C303 87-012-157-080 C-CAP,S 330P-50 CH C304 87-012-157-080 C-CAP,S 330P-50 CH C305 87-012-157-080 C-CAP,S 330P-50 CH C306 87-012-157-080 C-CAP,S 330P-50 CH C307 87-010-196-080 CHIP CAPACITOR,0.1-25 C309 87-0

40、10-196-080 CHIP CAPACITOR,0.1-25 C310 87-010-196-080 CHIP CAPACITOR,0.1-25 C311 87-010-198-080 CAP, CHIP 0.022 C312 87-010-198-080 CAP, CHIP 0.022 C313 87-010-180-080 C-CER 1500P C314 87-010-180-080 C-CER 1500P C315 87-010-182-080 C-CAP,S 2200P-50 B C316 87-010-182-080 C-CAP,S 2200P-50 B C321 87-012

41、-142-080 CAP, S 0.33-16 C322 87-012-142-080 CAP, S 0.33-16 C324 87-010-260-080 CAP, ELECT 47-25V C325 87-010-370-080 CAP,E 330-6.3 SME C327 87-010-404-080 CAP, ELECT 4.7-50V C328 87-010-404-080 CAP, ELECT 4.7-50V C332 87-010-196-080 CHIP CAPACITOR,0.1-25 C335 87-010-401-080 CAP, ELECT 1-50V C336 87-

42、010-401-080 CAP, ELECT 1-50V C337 87-010-196-080 CHIP CAPACITOR,0.1-25 C339 87-010-196-080 CHIP CAPACITOR,0.1-25 C340 87-010-196-080 CHIP CAPACITOR,0.1-25 C351 87-012-140-080 CAP 470P C352 87-012-140-080 CAP 470P C354 87-010-175-080 CAP 560P C355 87-A11-475-080 C-CAP,S 1000P-50 J CG C355 87-012-349-

43、080 C-CAP,S 1000P-50 J CH GRM C356 87-010-260-080 CAP, ELECT 47-25V C357 87-010-197-080 CAP, CHIP 0.01 DM C358 87-010-183-080 C-CAP,S 2700P-50 B C359 87-010-183-080 C-CAP,S 2700P-50 B C360 87-010-183-080 C-CAP,S 2700P-50 B C370 87-010-196-080 CHIP CAPACITOR,0.1-25 C373 87-016-083-080 C-CAP,S 0.15-16

44、 RK C374 87-016-083-080 C-CAP,S 0.15-16 RK C378 87-010-196-080 CHIP CAPACITOR,0.1-25 C379 87-010-382-080 CAP, ELECT 22-25V C380 87-010-382-080 CAP, ELECT 22-25V C381 87-010-197-080 CAP, CHIP 0.01 DM C382 87-010-312-080 C-CAP,S 15P-50 CH C383 87-010-197-080 CAP, CHIP 0.01 DM C384 87-010-402-080 CAP,

45、ELECT 2.2-50V C386 87-010-196-080 CHIP CAPACITOR,0.1-25 C387 87-012-145-080 CAP, CHIP S 270P CH C388 87-012-156-080 C-CAP,S 220P-50 CH C391 87-010-319-080 C-CAP,S 56P-50 CH C392 87-010-319-080 C-CAP,S 56P-50 CH C393 87-010-319-080 C-CAP,S 56P-50 CH C394 87-010-319-080 C-CAP,S 56P-50 CH C401 87-010-1

46、76-080 C-CAP,S 680P-50 SL C402 87-010-176-080 C-CAP,S 680P-50 SL C403 87-010-958-080 CHIP -CAP,S 0.01-25BJ C404 87-010-958-080 CHIP -CAP,S 0.01-25BJ C405 87-010-958-080 CHIP -CAP,S 0.01-25BJ C406 87-010-958-080 CHIP -CAP,S 0.01-25BJRadioFans.CN 收音机爱 好者资料库 7 DESCRIPTIONREF. NO.KANRINO.PART NO.DESCRIP

47、TIONREF. NO.KANRINO.PART NO. C407 87-010-401-080 CAP, ELECT 1-50V C408 87-010-401-080 CAP, ELECT 1-50V C409 87-010-196-080 CHIP CAPACITOR,0.1-25 C410 87-010-112-080 CAP, ELECT 100-16V C411 87-010-400-080 CAP, ELECT 0.47-50V C412 87-010-400-080 CAP, ELECT 0.47-50V C413 87-010-400-080 CAP, ELECT 0.47-

48、50V C414 87-010-401-080 CAP, ELECT 1-50V C417 87-010-221-080 CAP, ELECT 470-10V C418 87-A10-891-080 CAP,E 4.7-25 SME(K) C419 87-A10-800-080 C-CAP,S 6800P-16 J B CM C420 87-010-374-080 CAP, ELECT 47-10V C421 87-010-196-080 CHIP CAPACITOR,0.1-25 C422 87-A10-804-080 C-CAP,S 0.1-25 J B C422 87-A11-537-0

49、80 C-CAP,S 0.1-25 J B C424 87-010-374-080 CAP, ELECT 47-10V C425 87-010-196-080 CHIP CAPACITOR,0.1-25 C430 87-012-142-080 CAP, S 0.33-16 C430 87-A10-201-080 CAP, S 0.33-16 K B C431 87-010-971-080 C-CAP,S 4700P-50 B J C432 87-A11-475-080 C-CAP,S 1000P-50 J CG C432 87-012-349-080 C-CAP,S 1000P-50 J CH

50、 C433 87-A11-183-080 C-CAP,S 0.12-16 J B C433 87-A11-538-080 C-CAP,S 0.12-25 J B C434 87-A11-182-080 C-CAP,S 0.27-16 J B C435 87-A11-182-080 C-CAP,S 0.27-16 J B C436 87-A11-183-080 C-CAP,S 0.12-16 J B C436 87-A11-538-080 C-CAP,S 0.12-25 J B C437 87-010-971-080 C-CAP,S 4700P-50 B J C438 87-A11-475-08