Aiwa-NSXDR2-cs-sm 电路图 维修手册.pdf
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1、SERVICE MANUAL DATA BASIC CD MECHANISM : AZG-1 ZA3RNM/ZA4RNC COMPACT DISC STEREO CASSETTE RECEIVER NSX-DR2 NSX-DR3 S/M Code No. 09-006-429-1N2 EZ (S) EZ (S) BASIC TAPE MECHANISM : ZZM-2 PR1NM/PR1NC NSXDR2 SYSTEM CD CASSEIVER REMOTE CONTROLLER CXNDR2 SPEAKER SXNSZ7 NSXDR3CX-NDR3SXNSZ5 If requiring in
2、formation about the CD mechanism, see Service Manual of AZG-1, (S/M Code No. 09-001-335-3NC). RCZAS02 RadioFans.CN 收音机爱 好者资料库 -2- SPECIFICTAIONS Main unit FM tuner section Tuning range87.5 MHz to 108 MHz Usable sensitivity (IHF)16.8 dBf Antenna terminals75 ohms (unbalanced) MW tuner section Tuning r
3、ange531 kHz to 1602 kHz (9 kHz step) 530 kHz to 1710 kHz (10 kHz step) Usable sensitivity350 V/m AntennaLoop antenna LW tuner section Tuning range144 kHz to 290 kHz Usable sensitivity1400 V/m AntennaLoop antenna Amplifier section Power outputRated: 6.4 W + 6.4 W (6 ohms, T.H.D. 1%, 1 kHz/DIN 45500)
4、Reference: 8 W + 8 W (6 ohms, T.H.D. 10%, 1 kHz/DIN 45324) DIN MUSIC POWER: 15 W + 15 W Total harmonic distortion0.1% (3 W, 1 kHz, 6 ohms, DIN AUDIO) InputsVIDEO/AUX: 500 mV OutputsSPEAKERS: accept speakers of 6 ohms or more PHONES (stereo jack): accepts headphones of 32 ohms or more Cassette deck s
5、ection Track format4 tracks, 2 channels stereo Frequency response50 Hz 8000 Hz Recording systemAC bias HeadsDeck 1:Recording/playback head 1, erase head 1 Deck 2: Playback head 1 Compact disc player section LaserSemiconductor laser ( = 780 nm) D/A converter1 bit dual Signal-to-noise ratio85 dB (1 kH
6、z, 0 dB) Harmonic distortion0.05% (1 kHz, 0 dB) General Power requirements230 V AC, 50 Hz Power consumption42 W Power consumption14 W with power-economizing in standby modemode off 0.9 W with power-economizing mode on Dimensions (W H D)260 324 346 mm Weight4.7 kg Speaker system SX-NSZ5/SX-NSZ7 Speak
7、er system2 way, bass reflex (magnetic shielded type) Speaker unitsWoofer: 120 mm cone type Tweeter: 20 mm ceramic type Impedance6 ohms Sensitivity87 dB/W/m Dimensions (W H D)220 324 204 mm Weight2.0 kg Design and specifications are subject to change without notice. RadioFans.CN 收音机爱 好者资料库 -3- REF. N
8、OPART NO.KANRIDESCRIPTION NO. ACCESSORIES LIST 1 8A-NFB-916-110 IB,EZ(9L)M -SZ7(RDS) 1 8A-NFB-918-010 IB,EZ(9L)S 2 87-A90-118-010 ANT,WIRE FM(Z) 3 87-A90-030-010 ANT,LOOP AM-NC C 3 87-006-225-010 ANT,LOOP ANT NC2 4 8Z-NF9-701-210 RC UNIT,ZAS02 4 8Z-NF9-702-010 RC UNIT,ZAS02 RadioFans.CN 收音机爱 好者资料库 -
9、4- PROTECTION OF EYES FROM LASER BEAM DURING SERVICING VAROITUS! Laiteen Kyttminen muulla kuin tss kyttohjeessa mainitulla tavalla saattaa altistaa kyt-tjn turvallisuusluokan 1 ylittvlle nkymttmlle lasersteilylle. VARNING! Om apparaten anvnds p annat stt n vad som specificeras i denna bruksanvising,
10、 kan anvndaren utsttas fr osynling laserstrlning, som verskrider grnsen fr laserklass 1. Caution: Invisible laser radiation when open and interlocks defeated avoid exposure to beam. Advarsel:Usynling laserstling ved bning, nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. CAUTIO
11、N Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardousradiation exposure. ATTENTION Lutilisation de commandes, rglages ou procdures autres que ceux spcifis peut entraner une dangereuse exposition aux radiations. ADVARSEL! Usynlig laser
12、stling 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 the rear exterior. This set employs laser. Therefore, be sure to follow carefully the instructions
13、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 DISTANCE OF MORE THAN 30cm FROM THE SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL CLASS 1 KLASSE 1 LUOKAN 1 KLASS 1
14、 LASER PRODUCT LASER PRODUKT LASER LAITE LASER APPARAT 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
15、 the clothes do not touch the diode. -5- NOTE ON BEFORE STARTING REPAIR -1/2 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 can change dependi
16、ng 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 MICROCOMPUTER after
17、 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 on. Therefore, b
18、e 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 terminal to “L”. G
19、ood 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 correctly and the
20、 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) even though AC
21、 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 end of lead wire t
22、hat 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) of C102 in the
23、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. Fig-1 MAIN C.B D101 C101C102 22 34 Fig-2-1 MICROCOMPUTER FRONT C.BMAIN C.B OVER LOAD DET DC DET Q11
24、0 POWER AMP POWER AMP POWER SUPPLY HOLD HOLD SW ( AC DET PIN101 CON601 1 2 * 1 2 * In some models, it is PIN (. PIN number is different depending upon microprocessor. -6- In such a case, check also if the POWER AMPLIFIER circuit or power supply circuit has any abnormalities or not. 2-2. Regarding re
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