Aiwa-NSXSZ20-cs-sm 电路图 维修手册.pdf
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1、SERVICE MANUAL DATA COMPACT DISC STEREO SYSTEM BASIC TAPE MECHANISM : ZZM-3 PR1NM BASIC CD MECHANISM : AZG-1 ZD3RDM NSX-DR1 NSX-SZ20 EZ V S/M Code No. 09-007-423-4R4 REVISION This Service Manual is the “Revision Publishing” and replaces “Simple Manual” NSX-DR1(EZ), (S/M Code No. 09-004-423-4T4). If
2、requiring information about the CD mechanism, see Service Manual of AZG-1, (S/M Code No. 09-001-335-3N8). NSX-DR1 SPEAKERSYSTEM CD CASSEIVER REMOTE CONTROLLER NSX-SZ20 CX-NDR1SX-NSZ20 CX-NSZ20SX-NSZ22 RC-ZAS02 RadioFans.CN 收音机爱 好者资料库 2 SPECIFICATIONS Tuning rangeEZ: 87.5 MHz to 108 MHz V: FM1 (OIRT)
3、 65 MHz to 74 MHz (10 kHz step) FM2 (CCIR) 87.5 MHz to 108 MHz (50 kHz step) Usable sensitivity (IHF)EZ: 16.8 dBf V: FM1: 15.3 dBf FM2: 12.8 dBf Antenna terminals75 ohms (unbalanced) Tuning range531 kHz to 1602 kHz (9 kHz step) 530 kHz to 1710 kHz (10 kHz step) Usable sensitivity350 V/m AntennaLoop
4、antenna Tuning range144 kHz to 290 kHz Usable sensitivity1400 V/m AntennaLoop antenna Power outputRated: 30 W + 30 W (6 ohms, THD 1%, 1 kHz/DIN 45500) Reference: 35 W + 35 W (6 ohms, THD 10%,1 kHz/DIN 45324) DIN MUSIC POWER : 67 W + 67 W Total harmonic distortion 0.08% (15 W, 1 kHz, 6 ohms, DIN AUDI
5、O) InputsVIDEO/AUX: 500 mV OutputsSPEAKERS: accept speakers of 6 ohms or more PHONES (stereo jack): accepts headphones of 32 ohms or more Track format4 tracks, 2 channels stereo Frequency response50 Hz 15 kHz Recording systemAC bias HeadsDeck 1: Playback head x 1 Deck 2: Recording/Playback head x 1,
6、 erase head x 1 LaserSemiconductor laser ( =780 nm) D-A converter1 bit dual Signal-to-noise ratio85 dB (1 kHz, 0 dB) Harmonic distortion0.05 % (1 kHz, 0 dB) Power requirements230 V AC, 50 Hz Power consumption80 W Power consumption in standby mode 14 W With power-economizing mode off 0.9 W With power
7、-economizing mode on Dimensions of main unit260 x 328 x 335 mm (W x H x D) Weight of main unit6.2 kg Speaker System3 way, bass reflex (magnetic shielded type) Speaker unitsWoofer: 140 mm cone type Tweeter: 60mm cone type Super tweeter: 20 mm ceramic type Impedance6 ohms Output sound pressure level 8
8、7 dB/W/m Dimensions (W x H x D)230 x 324x 256 mm Weight3.8 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. RadioFans.CN 收音机爱 好者资料库 3 CLASS 1LASER PRODUCT KLASSE 1LASER PRODUKT LUOKAN
9、 1LASER LAITE KLASS 1LASER APPARAT This set employs laser. Therefore, be sure to follow carefully the instructions below when servicing. WARNING! WHEN SERVICING, DO NOT APPROACH THE LASER EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO CONFIRM LASER BEAM EMISSION. BE SURE TO OBSERVE FROM A
10、 DISTANCE OF MORE THAN 30cm FROM THE SURFACE OF THE OBJEC- TIVE LENS ON THE OPTICAL PICK-UP BLOCK. TCaution: Invisible laser radiation when open and interlocks defeated avoid exposure to beam. TAdvarsel: Usynlig laserstling ved bning, nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for str
11、ling. VAROITUS! Laiteen Kyttminen muulla kuin tss kyttohjeessa mainitulla tavalla saataa altistaa kyt-tjn turvallisuusluokan 1 ylittvlle nkymttmlle lasersteilylle. VARNING! Om apparaten anvnds p annat stt n vad som specificeras i denna bruksanvising, kan anvndaren utsttas fr osynling laserstrlning,
12、som verskrider grnsen fr laserklass 1. PROTECTION OF EYES FROM LASER BEAM DURING SERVICING CAUTION Use of controls or adjustments or performance of proce- dures other than those specified herin may result in hazardous radiation exposure. ATTENTION Lutillisation de commandes, rglages ou procdures aut
13、res que ceux spcifis peut entraner une dangereuse exposition aux radiations. ADVARSEL Usynlig laserstling ved bning, nr sikkerhedsafbrydereer ude af funktion. Undg udsttelse for strling. This Compact Disc player is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on
14、the rear exterior. Precaution to replace Optical block (KSS-213F) 1) After the connection, remove solder shown in the right figure. Body or clothes electrostatic potential could ruin laser diode in the optical block. Be sure ground body and workbench, and use care the clothes do not touch the diode.
15、 Solder (KSS 213F) PICKUP Assy P.C.B. RadioFans.CN 收音机爱 好者资料库 NOTE ON BEFORE STARTING REPAIR Charging voltage (V)Discharging Rated power (W)Parts number (C101, 102)resistor ( ) 25-48100387-A00-247-090 49-140220587-A00-232-090 Note: The reference numbers (C101, C102) of the electrolytic capacitors ca
16、n change depending on the models. Be sure to check the reference numbers of the charging capacitors on schematic diagram before starting the discharging work. 2. Check items before exchanging the MICROCOMPUTER Be sure to check the following items before exchanging the MICROCOMPUTER. Exchange the MIC
17、ROCOMPUTER after confirming that the MICROCOMPUTER is surely defective. 2-1. Regarding the HOLD terminal of the MICROCOMPUTER When 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
18、on. Therefore, be sure to check the terminal voltage of the HOLD terminal before exchange. When the MICROCOMPUTER is not defective, the HOLD terminal can also go “L” when the POWER AMPLIFIER has any abnormalities that triggers the abnormality detection circuit on the MAIN C. B. that sets the HOLD te
19、rminal to “L”. Good or no good judgement of the MICROCOMPUTER 1Turn on the AC main power. 2Confirm that the main power is turned on and the HOLD terminal of the MICROCOMPUTER keeps the “H” level or not. 3When the HOLD terminal is “L” level, the abnormality detection circuit is judged to be working c
20、orrectly and the MICROCOMPUTER is judged to be good. 1. Forced discharge of electrolytic capacitor of power supply block When repair is going to be attempted in the set that uses relay circuit in the power supply block, electric potential is kept charged across the electrolytic capacitors (C101, 102
21、) even though AC power cord is removed. If repair is attempted in this condition, secondary defect can occur. In order to prevent the secondary trouble, perform the following measures before starting repair work. Discharge procedure 1Remove the AC power cord. 2Connect a discharging resistor at an en
22、d of lead wire that has clips at both ends. Connect the other end of the lead wire to metal chassis. 3Contact the other end of the discharging resistor to the positive (+) side (+VH) of C101. (For two seconds) 4Contact the same end of the discharging resistor as step 3 to the negative (-) side (-VH)
23、 of C102 in the same way. (For two seconds) 5Check that voltage across C101 and C102 has decreased to 1 V or less using a multimeter or an oscilloscope. Select a discharging resistor referring to the following table. MAIN C.B D101 C101C102 34 22 - 4 - In such a case, check also if the POWER AMPLIFIE
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