Aiwa-NSXR14-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL DATA CD STEREO SYSTEM NSX-R14 S/M Code No. 09-028-455-6N5 LH(S) BASIC CD MECHANISM : BZG-2 ZD9GNC2 BASIC TAPE MECHANISM : CMAT6Z2(1+1)ALPS If requiring information about the CD mechanism, see Service Manual of BZG-2 ZD9GNC2, (S/M Code No. 09-023-353-2NA). NSX-R14 SPEAKERSYSTEM CD CASS

2、EIVER SX-NR22CX-NR14 REMOTE CONTROLLER RC-CAS03(VS) RadioFans.CN 收音机爱 好者资料库 -2- SPECIFICATIONS .3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING . 4 NOTE ON BEFORE STARTING REPAIR . 5, 6 ACCESSORIES PARTS LIST. 7 ELECTRICAL PARTS LIST .8 20 TRANSISTOR ILLUSTRATION . 21 SCHEMATIC DIAGRAM -1/5 (M

3、AIN-1/2, AMP SECTION). 22 SCHEMATIC DIAGRAM -2/5 (MAIN-2/2, TUNER SECTION) . 23 SCHEMATIC DIAGRAM -3/5 (HP SECTION). 24 WIRING -1/4 (MAIN C.B, HP C.B) . 25 SCHEMATIC DIAGRAM -4/5 (FRONT/MIC/DECK SECTION). 26 WIRING -2/4 (FRONT C.B/MIC C.B) . 27 WIRING -3/4 (DECK C.B) . 28 SCHEMATIC DIAGRAM -5/5 (PT

4、SECTION) . 29 WIRING -4/4 (PT C.B). 30 ELECTRICAL ADJUSTMENT. 31 36 CD TEST MODE . 37 FL DISPLAY (HUA-13SS09T). 38 IC BLOCK DIAGRAM.39 40 IC DESCRIPTION .41 42 MECHANICAL EXPLODED VIEW. 43 MECHANICAL PARTS LIST . 44 COLOR NAME TABLE. 45 TAPE MECHANISM EXPLODED VIEW . 46 TAPE MECHANISM PARTS LIST . 4

5、7 GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE) . 48 SPEAKER PARTS LIST (SX-NR22) . 49 OTHER PARTS LIST . 50 TABLE OF CONTENTS -1/1 RadioFans.CN 收音机爱 好者资料库 -3- SPECIFICATIONS -1/1 MAIN UNIT CX-NR14 TUNER FM tuning range87.5 MHz to 108 MHz FM usable sensitivity (IHF)13.2 dBf FM antenna ter

6、minal75 ohms (unbalanced) AM tuning range530 kHz to 1710 kHz (10 kHz step) 531 kHz to 1602 kHz (9 kHz step) AM usable sensitivity350 V/m AM antennaLoop antenna AMPLIFIER Power outputRated: 17 W + 17 W (6 ohms, T.H.D. 1 %, 1 kHz) Reference: 20 W + 20 W (6 ohms, T.H.D. 10 %, 1 kHz) Total harmonic dist

7、ortion0.08 % (10 W, 1 kHz, 6 ohms, DIN AUDIO) InputsVIDEO/AUX: 500 mV MIC: 1.0 mV (10 kohms) OutputsSPEAKERS: 6 ohms or more PHONES: 32 ohms or more CASSETTE DECK Track format4 tracks, 2 channels stereo Frequency response50 Hz - 15 kHz Recording systemAC bias HeadsDECK 1: playback x 1 DECK 2: record

8、ing/playback x 1, erase x 1 CD PLAYER 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) GENERAL Power requirements120 V/220 - 230 V/240 V AC (Switchable), 50 Hz/60 Hz Power consumption64 W Dimensions (W x H x

9、 D)260 x 324 x 315 mm Weight5.2 kg FRONT SPEAKERS SX-NR22 Speaker system2 way, bass reflex (magnetic shielded) Speaker unitsWoofer: 120 mm cone Tweeter: 60 mm ceramic Impedance6 ohms Dimensions (W x H x D)210 x 324 x 215 mm Weight3.0 kg Specifications and external appearance are subject to change wi

10、thout notice. RadioFans.CN 收音机爱 好者资料库 -4- 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

11、 FROM A DISTANCE OF MORE THAN 30cm FROM THE SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL PICK-UP BLOCK. Caution: Invisible laser radiation when open and interlocks defeated avoid exposure to beam. Advarsel: Usynlig laserstling vedbning, nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for s

12、trling. 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

13、, som verskrider grnsen fr laserklass 1. PROTECTION OF EYES FROM LASER BEAM DURING SERVICING -1/1 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 procdu

14、res 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 classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is loca

15、ted on the rear exterior. CLASS 1LASER PRODUCT KLASSE 1LASER PRODUKT LUOKAN 1LASER LAITE KLASS 1LASER APPARAT Precaution to replace Optical block (PXR-104X-BP-0101) Body or clothes electrostatic potential could ruin laser diode in the optical block. Be sure ground body and workbench, and use care th

16、e clothes do not touch the diode. 1) After the connection, remove solder shown in right figure. CD PICK-UP Assy PWB Solder -5- NOTE ON BEFORE STARTING REPAIR -1/2 1. Forced discharge of electrolytic capacitor of power supply block When repair is going to be attempted in the set that uses relay circu

17、it in the power supply block, electric 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

18、 starting repair work. Discharge procedure 1Remove the AC power cord. 2Connect 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. 3Contact the other end of the discharging resistor to the positive (+) side (+VH) of C101

19、. (For two seconds) 4Contact the same end of the discharging resistor as step 3 to the negative (-) side (-VH) 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 referri

20、ng to the following table. Note: The 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 MIC

21、ROCOMPUTER Be sure to check the following 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 MICROCOMPUT

22、ER 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 HOLD terminal before exchange. When the MICROCOMPUTER is not defective, the HOLD terminal can also go L when the POWER AMPLIFIER has any abnorm

23、alities 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 MICROCOMPUTER 1 Turn on the AC main power. 2 Confirm that the main power is turned on and the HOLD terminal of the MICROCOMPUTER keeps the H level or not. 3 Wh

24、en the HOLD terminal is L level, the abnormality detection circuit is judged to be working correctly and the MICRO COMPUTER is judged to be good. Fig-1 MAIN C.B D101 C101C102 34 22 Charging voltage (V)Discharging Rated power (W)Parts number (C101, 102)resistor ( ) 25-48100387-A00-247-090 49-14022058

25、7-A00-232-090 -6- 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 power cord is re-inserted, or the

26、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 following procedure and check good or no

27、 good of the MICROCOM PUTER. 1 Remove the AC power cord. 2 Short both ends of the electrolytic capacitor C113 that is connected to VDD of the MICROCOMPUTER with tweezers. 3 Connect the AC power cord again. If the MICROCOMPUTER returns to the normal operation, the MICROCOMPUTER is good. Note: The ref

28、erence 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 soldering state of MICROCOMPUTER Check the solde

29、ring 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. NOTE ON BEFORE STARTING REPAIR -2/2 Fig-2-2 MICRO- COMPUTER MICROCOMPUTER FRONT

30、C.B FRONT C.B VSS VDD C113 16 15 C113 18 15 Short with tweezers. != ! SAFTY PARTS C= Components marked All components used on this model at the production line are shown in this service manual. However, please note that not all components will be available as spare parts for after-sales service. Com

31、ponents marked S and O are designated as spare parts for service and will be stocked at the spare parts centers. Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX ca

32、rrier at 1000 kHz with 30% modulation, and source at 1 kHz, position output at maximum. (2) Adjust the unit to AM 1000 kHz. (3) While monitoring the 1 kHz waveform through oscilloscope, decrease the S.S.G. output level (till slight noises appear in the waveform). (4) Adjust L802 so that the millivol

33、tmeter indicates maximum. -33- 5. Tracking Adjustment Requirements: Same as Item 4. *Adjustment point: L952 / L953 (1) Adjust the S.S.G. setting to AM; carrier at 1000 kHz with 30% modulation, and source at 1 kHz, position output at maximum. (2) Adjust the unit to AM 1000 kHz. (3) While monitoring t

34、he 1 kHz waveform through oscilloscope, decrease the S.S.G. output level (till slight noises appear in the waveform.) (4) Adjust L952 so that the millivoltmeter indicates maximum. (5) Adjust the S.S.G setting to AM; carrier at 600 kHz; distortion rate at 30 %, and source at 1 kHz. (6) Adjust the uni

35、t to AM 600 kHz. (7) Adjust L953 so that the millivoltmeter indicates maximum. (8) Repeat above steps (1) to (7) two or three times. 6. Auto-Stop Function Check Requirements: Same as Item 4. (1) Adjust the S.S.G setting to AM; carrier at 1000 kHz; distortion rate at 30 %; source at 1 kHz, and output

36、 at 40 65 dBuV. (2) Start the tuning search mode, and check that the auto-stop function is applied at AM 1000 kHz. Make sure that the following settings are done before adjustment. Preparation *Measuring instruments: Standard Signal Generator (S.S.G.) / Oscilloscope / Millivoltmeter / Dummy resistor

37、 (6) (1) Connect the measuring instruments as shown in the diagram below. (2) Connect the output terminal of signal generator to the antenna input terminal of the unit. 7. Tracking Adjustment Requirements *Test Point: SP OUT (Lch, Rch) Adjustment point: L904 (1) Adjust the S.S.G. setting to FM; carr

38、ier at 87.5 MHz, distortion at 75 kHz , and source 1 kHz, position output at maximum. (2) Adjust the unit to FM 87.5 MHz. (3) While monitoring the waveform at 1kHz through the oscilloscope, lower the output level of S.S.G. maximum (till a certain degree of noise is monitored). (4) Adjust L904 so that the millivoltmeter points maximum. 8. Separation Check Requirements: