Aiwa-NSX-WV59-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL DATA COMPACT DISC STEREO SYSTEM BASIC TAPE MECHANISM : 2ZM-3MK2 YPR4NM BASIC CD MECHANISM : AZG-1 YVZD3RDM NSX-WV59HR S/M Code No. 09-009-435-3N1 If requiring information about the CD mechanism, see Service Manual of AZG-1, (S/M Code No. 09-001-335-3NG). NSX-WV59 SPEAKERSYSTEM CD CASS

2、EIVER REMOTE CONTROLLER CX-NWV59RC-ZAS08 SX-NDP54 SX-R277 SX-C607 RadioFans.CN 收音机爱 好者资料库 2 SPECIFICATIONS Tuning range87.5 MHz to 108 MHz Usable sensitivity (IHF)13.2 dBf Antenna terminals75 ohms (unbalanced) Tuning range531 kHz to 1602 kHz (9 kHz step) 530 kHz to 1710 kHz (10 kHz step) Usable sens

3、itivity350 V/m AntennaLoop antenna Tuning range5.730 MHz to 17.900 MHz AntennaWire antenna Mid-high frequency amplifier Power output Front Rated: 65 W + 65 W (6 ohms, T.H.D. 1%, 1 kHz) Reference: 80 W + 80 W (6 ohms,T.H.D. 10%, 1 kHz) Rear (Surround) Rated: 20 W + 20 W (8 ohms, T.H.D. 1%, 1 kHz) Ref

4、erence: 25 W + 25 W (8 ohms,T.H.D. 10%, 1 kHz) Center Rated: 20 W (8 ohms, T.H.D.1%, 1 kHz) Reference: 25 W (8 ohms, T.H.D. 10%, 1 kHz) Total harmonic distortion 0.1% (35 W, 1kHz, 6 ohms, DIN AUDIO / Front) InputsVIDEO/AUX: 300 mV (adjustable) MIC: 1.0 mV (10 K ohms) OutputsVIDEO OUT: 1.0 Vp-p (75oh

5、ms) SPEAKERS: accept speakers of 6 ohms or more SURROUND SPEAKERS: accept speakers of 8 ohms to 16 ohms CENTER SPEAKER: accept speakers of 8 ohms or more SUB WOOFER: 1.9 V PHONES (stereo jack): accepts headphones of 32 ohms or more Track format4 tracks, 2 channels stereo Frequency response50 Hz 1500

6、0 Hz Recording systemAC bias HeadsDeck 1 : Playback head x 1 Deck 2 : Recording/Playback head x 1, 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) Video signalNTSC/PAL color format (selectable

7、) Video dataMPEG 1 Audio dataMPEG 1, LAYER 2 Speaker system2 way, bass reflex (magnetic shielded type) Speaker unitsWoofer: 160 mm cone type Tweeter: 60 mm cone type Impedance6 ohms Sensitivity87 dB/W/m Dimensions (W x H x D)240 x 324 x 245 mm Weight4.4 kg Power requirements120 V/220-230 V/240 V AC

8、switchable, 50/60 Hz Power consumption200 W Power consumption in standby mode If the power-economizing mode is ECO OFF: 20 W if the power-economizing mode is ECO ON or ECO AUTO: 0.9 W Dimensions of main unit260 x 326 x 345 mm (W x H x D) Weight of main unit10.5 kg Design and specifications are subje

9、ct to change without notice. Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY”, the double-D symbol and PRO LOGIC are trademarks of Dolby Laboratories Licensing Corporation. The word BBEand the BBE symbol are trademarks of BBE Sound, Inc. Under license from BBE Sound,

10、Inc. RadioFans.CN 收音机爱 好者资料库 3 CLASS 1LASER PRODUCT KLASSE 1LASER PRODUKT LUOKAN 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. I

11、N 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 OBJEC- TIVE LENS ON THE OPTICAL PICK-UP BLOCK. sCaution: Invisible laser radiation when open and interlocks defeated avoid exposure to beam. sAdvarsel: Usynlig laserstl

12、ing ved bning, nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. 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 speci

13、ficeras i denna bruksanvising, kan anvndaren utsttas fr osynling laserstrlning, 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 ra

14、diation exposure. ATTENTION Lutillisation de commandes, rglages ou procdures autres 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 class

15、ified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the rear exterior. Precaution to replace Optical block (KSS-213F) 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 to

16、uch the diode. 1) After the connection, remove solder shown in right figure. PICK-UP Assy PWB Solder RadioFans.CN 收音机爱 好者资料库 4 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

17、reference numbers (C101, C102) of the electrolytic capacitors can 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 follo

18、wing items before exchanging the MICROCOMPUTER. Exchange the MICROCOMPUTER 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 correc

19、tly. When this terminal is “L”, the main power cannot be turned 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 abnor

20、mality detection circuit on the MAIN C. B. that sets the HOLD terminal to “L”. Good or no good judgement of the MICROCOMPUTER 11111Turn 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 termin

21、al is “L” level, the abnormality detection circuit is judged to be working correctly 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, elec

22、tric potential is kept charged across the electrolytic capacitors (C101, 102) 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 p

23、rocedure 11111Remove the AC power cord. 22222Connect a discharging resistor at an end of lead wire that has clips at both ends. Connect the other end of the lead wire to metal chassis. 33333Contact the other end of the discharging resistor to the positive (+) side (+VH) of C101. (For two seconds) 44

24、444Contact the same end of the discharging resistor as step 33333 to the negative (-) side (-VH) of C102 in the same way. (For two seconds) 55555Check 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

25、following table.Fig-1 MAIN C.B D101 C101C102 22 34 5 In such a case, check also if the POWER AMPLIFIER circuit or power supply circuit has any abnormalities or not. 2-2. Regarding reset There are cases that the machine does not work correctly because the MICROCOMPUTER is not reset even though the AC

26、 power 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 to exchange the MICROCOMPUTER. In such a case, perform the forced-reset by the follo

27、wing procedure and check good or no good 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 operatio

28、n, the MICROCOMPUTER is good. Note: The reference number or MICROCOMPUTER pin number of transistor (Q110) and electrolytic capacitor (C113) can change depending on the models. Be sure to check the reference numbers on schematic diagram before starting the discharging work. 2-3. Confirmation of solde

29、ring state of MICROCOMPUTER Check the soldering state of the MICROCOMPUTER in addition to the above described procedures. Be sure to exchange the MICROCOMPUTER after surely confirming that the trouble is not caused by poor soldering but the MICROCOMPUTER itself. Fig-2-2 MICRO- COMPUTER MICROCOMPUTER

30、 FRONT C.B FRONT C.B VSS VDD C113 * % C113 18 15 Short with tweezers. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?!? ?!? ?!? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?!? ? ?!? ? ?!? ? ? ? ? ? ?# ? ?#? ?# ? ?#? ? ? ? ? ? ? ?# ? ?#? ? ? ?# ? ?#?$? ?# ? ?#?$? ?# ? ?#?$? ?# ? ?#?$? ?# ? ?#?$? ?#

31、 ? ?#? ?$? ?$?#? ?$?#? ? ?! ? ?! ? ? ? ? ? ? ? ? ? ? ?$? ? ? ? ? ? ? ? ? ? ? ?$? ? ?$? ? ? ? ? ? ? ? ?$?#? ?$?#? ?$?#? ?$?#? ?$?#? ?!? ?!? ?!? ?!? ?!? ?!? ?$?#? ?$?#? ?$?#? ?$? ?$? ? ? ? ? ?$?!? ?$?!? ? ? ? ?$? ? ?$? ? ?$? ?$?#? ? ? ? ? ?$?#? ?$?#? ?$?#? ? ? ? ? ? ? ?$? ?!? ?!? ?!? ?$?#? ?$? ?$? ?$?#? ? ? ? ? ?$?#? ?!? ? ? ? ? ? ?