Aiwa-NSXR80-cs-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL DATA NSX-R80LH(S) S/M Code No. 09-023-455-1R1 BASIC TAPE MECHANISM : 2ZM-3MK2 PR7NM BASIC CD MECHANISM : BZG-5 ZD5GNM This Service Manual is the “Revision Publishing” and replaces “Simple Manual”, NSX-R80 LH(S), S/M Code No. 09-021-455-1T1. If requiring information about the CD mechan

2、ism, see Service Manual of BZG-5, (S/M Code No. 09-023-353-3NC) REVISION CX-NR80NSX-R80RC-CAS01 SYSTEM CD CASSEIVER REMOTE CONTROLLER SPEAKER SX-NR75 SX-R165 CD STEREO SYSTEM 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 RE

3、PAIR .5 6 ELECTRICAL PARTS LIST (CX NR80) .7 21 ELECTRICAL PARTS LIST (2ZM 3MK2 PR7NM).22 CHIP RESISTOR PART CODE.23 TRANSISTOR ILLUSTRATION.23 WIRING 1 (MAIN / HP).24 SCHEMATIC DIAGRAM 1 (MAIN 1 / 4 / HEAD 1 / HEAD 2) .25 SCHEMATIC DIAGRAM 2 (MAIN 2 / 4 : TUNER SECTION) .26 SCHEMATIC DIAGRAM 3 (MAI

4、N 3 / 4 : VF SECTION) .27 SCHEMATIC DIAGRAM 4 (MAIN 4 / 4 : FAN SECTION).28 SCHEMATIC DIAGRAM 5 (HP) .29 WIRING 2 (FRONT / CD LED) .30 SCHEMATIC DIAGRAM 6 (FRONT / DECK / CD LED) .31 WIRING 3 (PT) .32 SCHEMATIC DIAGRAM 7 (PT).33 WIRING 4 (DECK / HEAD 1 / HEAD 2) .34 IC BLOCK DIAGRAM . 35 FL (HUA 11M

5、M42T) GRID ASSIGNMENT / ANODE CONNECTION / PIN CONNECTION .36 IC DESCRIPTION .37 38 ADJUSTMENT (TUNER / DECK). 39 44 CD TEST MODE .45 MECHANICAL EXPLODED VIEW . 46 MECHANICAL PARTS LIST .47 48 COLOR NAME TABLE . 49 TAPE MECHANISM EXPLODED VIEW . 50 TAPE MECHANISM PARTS LIST.51 52 GENERAL SPEAKER DIS

6、ASSEMBLY INSTRUCTIONS (FOR REFERENCE) .53 SPEAKER PARTS LIST (SX NR75).54 SPEAKER PARTS LIST (SX R165) .55 ACCESSORIES PARTS LIST .56 OTHERS PARTS LIST (CX NR80).57 OTHERS PARTS LIST (2ZM 3MK2 PR7NM).58 TABLE OF CONTENTS RadioFans.CN 收音机爱 好者资料库 3 SPECIFICATIONS Tuning range87.5 MHz to 108 MHz Usable

7、 sensitivity (IHF)13.2 dBf Antenna terminal75 ohms (unbalanced) Tuning range530 kHz to 1710 kHz (10 kHz step) 531 kHz to 1602 kHz (9 kHz step) Usable sensitivity350 V/m AntennaLoop antenna Power outputRated: 110 W + 110 W (T.H.D. 1 %, 1 kHz, 6 ohms) Reference: 175 W + 175 W (T.H.D. 10 %, 1 kHz, Fron

8、t speakers 6 ohms + Surround speakers 8 ohms) Total harmonic distortion0.08 % (55 W, 1 kHz, 6 ohms, DIN AUDIO) InputVIDEO/AUX: 700 mV MIC: 2.4 mV (10 kohms) OutputsSPEAKERS: 6 ohms or more SURROUND SPEAKERS: 8 ohms to 16 ohms PHONES: 32 ohms or more Track format4 tracks, 2 channels stereo Frequency

9、response50 Hz 15 kHz Recording systemAC bias HeadsDECK 1 : playback X 1 DECK 2 : recording/playback x 1, erase 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 requirements120 V/220 V - 230 V/240 V

10、 AC (switchable), 50 Hz/60 Hz Power consumption170 W Power consumptionWith ECO mode on : 0.6 W in standby modeWith ECO mode off : 25 W Dimensions (W x H x D)260 x 324 x 360 mm Weight8.5 kg Speaker system3 way, bass reflex (magnetic shielded) Speaker unitsWoofer: 160 mm cone Tweeter: 60 mm cone Super

11、 tweeter : 20 mm ceramic x 2 Impedance6 ohms Dimensions (W x H x D)250 x 324 x 268 mm Weight4.5 kg Speaker system1 way, closed Speaker unitFull Range: 80 mm cone Impedance8 ohms Dimensions (W x H x D)194 x 117 x 132 mm Weight0.8 kg Design and specifications are subject to change without notice. Radi

12、oFans.CN 收音机爱 好者资料库 4 This set employs laser. Therefore, be sure to follow carefully the instruc- tions 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 O

13、F 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 ved bning, nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. VAROITUS!

14、 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, som verskrider

15、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 autres que ceux sp

16、cifis 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 the rear exteri

17、or. CLASS 1LASER PRODUCT KLASSE 1LASER PRODUKT LUOKAN 1LASER LAITE KLASS 1LASER APPARAT Precaution to replace Optical block (KSM-213RSCM) 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

18、diode. 1) After the connection, remove solder shown in right figure. CD PICK-UP Assy PWB Solder 5 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

19、) 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 following items before exchanging

20、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 correctly. When this terminal is “L

21、”, 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 abnormality detection circuit on t

22、he 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 terminal is “L” level, the abnormal

23、ity 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, electric potential is kept charge

24、d 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 procedure 11111Remove the AC p

25、ower 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) 44444Contact the same end of th

26、e 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 following table.Fig-1 MAIN C.

27、B D101 C101C102 22 34 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, o

28、r 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 following procedure and check good

29、 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 operation, the MICROCOMPUTER is good.

30、 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 soldering state of MICROCOMPUTER C

31、heck 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 FRONT C.B FRONT C.B VSS VDD

32、C113 * % 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. Components marked S and O a

33、re 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 carrier of 1000kHz with 30

34、% modulation, and source at 1kHz. 2) Tune the receiving frequency of the unit at AM1000kHz. 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 L802 so that the millivoltmeter points maxi

35、mum. 5. Tracking Adjustment (AM) Requirements: As instructed in preparations. Adjustment point: L952 1) Set S.S.G. to AM; carrier of 1000kHz with 30% modulation, and source at 1kHz. 2) Tune the receiving frequency of the unit at AM1000kHz. 3) While monitoring the waveform at 1kHz through the oscillo

36、scope, lower the output level of S.S.G. maximum (till a certain degree of noise is monitored). 4) Adjust L952 so that the millivoltmeter points maximum. 6. Auto-Stop Check (AM) Requirements: As instructed in preparations. 1) Set S.S.G. to AM; carrier of 1000kHz with 30% modulation, source at 1kHz, and output of 40 to 65dBuv. 2) Apply the tuning search function, and check that the unit automatica