Aiwa-NSXDR4-cs-sm维修电路原理图.pdf
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1、SERVICE MANUALCOMPACT DISC STEREOCASSETTE RECEIVERBASIC TAPE MECHANISM : ZZM-2 YR1NFSBASIC CD MECHANISM : AZG-1 ZA3RNDMNSX-DR4EZS/M Code No. 09-008-428-8R5REVISION If requiring information about the CD mechanism, see Service Manual of AZG-1 (S/M Code No. 09-001-335-3NC). This Service Manual is the “
2、Revision Publishing” and replaces “Simple Manual” NSX-DR4(EZ), (S/M Code No. 09-007-428-8T6).DATANSX-DR4SPEAKERSYSTEMCDCASSEIVERREMOTECONTROLLERCX-NDR4SX-NBL11RC-ZAS02RadioFans.CN 收音机爱 好者资料库? ?!?#?$?%? !?%?#?$? ?!?&? ?(? ?#)*+?%?,-?)?.,?&?/?0?(?#)*+?%? %,?-?)?.,?)*+?12*3?456&0?(?#?$?.?,?,?,)*+?71)*5
3、?*)65#7180?%?246796&20?/?/?/?4?5+62?/?:?0? ?/?/?&?$? ?%?/?,? ?/?(?;?)?$?73?$?)?0?&?/?,?/?)? ?0?4?&?$?2?/?/?*+?,?/?=?,?/0? ?-A?/0 ?/?$?,?#?*?*? ? %? ?#? ?=?1?!?(? ?73,?!?%?!?A?/;?=?$?$?0?%?A?/;?=?0?!?*? ? ? %?%?*?#? ?%?!?=B?)?=?/?:?=?A?RadioFans.CN 收音机爱 好者资料库 3 CLASS 1LASER PRODUCTKLASSE 1LASER PRODU
4、KTLUOKAN 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 ISNECESSARY TO CONFIRM LASER BEAM EMISSION.BE SURE TO OBSERVE FROM A
5、 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 sikkerhedsafbrydere er ude af funktion.Undg udsttelse for strling.VAR
6、OITUS!Laiteen Kyttminen muulla kuin tss kyttohjeessamainitulla tavalla saattaa altistaa kyt-tjnturvallisuusluokan 1 ylittvlle nkymttmllelasersteilylle.VARNING!Om apparaten anvnds p annat stt n vad somspecificeras i denna bruksanvising, kan anvndarenutsttas fr osynling laserstrlning, som verskridergr
7、nsen fr laserklass 1.PROTECTION OF EYES FROM LASER BEAM DURING SERVICINGCAUTIONUse of controls or adjustments or performance of proce-dures other than those specified herein may result inhazardous radiation exposure.ATTENTIONLutillisation de commandes, rglages ou procduresautres que ceux spcifis peu
8、t 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 LASER PRODUCT label is located on therear exterior.PICK-UP ASSYP.
9、C.BPrecaution 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 shown inright figure.SOLDERRadioFans.CN 收音机爱 好者资
10、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 can change depending on the models. Be sure to check thereference
11、 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 MICROCOMPUTER after confirmingthat the MICROCOMPUTER is surely defect
12、ive.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. Therefore, be sure to check the terminal voltage of the HOLDtermin
13、al 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 to “L”.Good or no good judgement of the MICROCOMPUTER11111Turn on
14、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 correctly and theMICROCOMPUTER is judged to be good.1. Forced disc
15、harge 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) even though AC power cord is removed. If repair is attempted in thi
16、s 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 end of lead wire thathas clips at both ends. Connect the other end o
17、f 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 (-VH) of C102 in the same way.(For two seconds)55555Check that vo
18、ltage 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 also if the POWER AMPLIFIER circuit or power supply circuit has any
19、 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 + POWER key) is performed.When the above described phenomenon occurs, it
20、 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.11111Remove the AC power cord.22222Short both ends of the electrolytic capacitor C113
21、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 MICROCOMPUTER isgood.Note: The reference number or MICROCOMPUTER pin number of transistor (Q110) and electrolytic capacitor (C113) can change de
22、pendingon the models. Be sure to check the reference numbers on schematic diagram before starting the discharging work.2-3. Confirmation of soldering state of MICROCOMPUTERCheck the soldering state of the MICROCOMPUTER in addition to the above described procedures. Be sure to exchange theMICROCOMPUT
23、ER after surely confirming that the trouble is not caused by poor soldering but the MICROCOMPUTER itself.Fig-2-2MICRO-COMPUTERMICROCOMPUTERFRONT C.BFRONT C.BVSSVDDC113*%C1131815Short with tweezers.RadioFans.CN 收音机爱 好者资料库ELECTRICAL MAIN PARTS LISTDESCRIPTIONREF. NO.KANRINO.PART NO.DESCRIPTIONREF. NO.
24、KANRINO.PART NO.IC 8A-NFA-615-010 C-IC,M38B57MCH-E236FP 87-A21-419-040 C-IC,NJM14558MD-TE2 87-A21-443-040 C-IC,M62495AFP 87-A21-560-010 IC,LA1844L-A 87-070-127-110 IC,LC72131 D 87-A21-629-010 IC,SPS-442-10N 87-A21-482-010 IC,RPM6938-H4TRANSISTOR 87-026-609-080 TR,KTA1266GR 89-213-702-010 TR,2SB1370E
25、 87-026-610-080 TR,KTC3198GR 87-A30-076-080 C-TR,2SC3052F 87-A30-075-080 C-TR,2SA1235F 87-A30-255-010 C-TR,2SB1342 87-A30-256-010 TR,2SD1933 87-A30-090-080 FET,2SK2541 87-A30-484-080 C-TR,KRA102S 87-A30-468-080 C-TR,KRC102S-RTK 87-A30-107-070 C-TR,CMBT5401 87-A30-106-040 C-TR,CMBT5551 87-A30-091-080
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