Aiwa-NSX-SZ800-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL DATA NSX-AJ800 NSX-SZ800 U LH COMPACT DISC STEREO SYSTEM S/M Code No. 09-013-443-5R1 REVISION BASIC CD MECHANISM : BZG-5 ZD3N1M BASIC TAPE MECHANISM: 2ZM-3MK2 PR4NM/ 6ZM-3 PR4NM This Service Manual is the “Revision Publishing” and replace “Simple Manual” NSX-AJ800/SZ800, (S/M Code No.

2、 09-012-443-5T1). If requiring information about the CD mechanism, see Service Manual of BZG-5 (S/M Code No. 09-00C-353-3N2). NSXAJ800 FRONT SPEAKER SYSTEM SXNAJ801CXNAJ800 REMOTE CONTROLLER RCBAS01 CD CASSEIVER NSXSZ800SXWNSZ800CXNSZ800 TAPE MECHANISM 6ZM3 PR4NM 2ZM3MK2 PR4NM SATELLITE SPEAKER SXS8

3、5 RadioFans.CN 收音机爱 好者资料库 2 SPECIFICATIONS TUNER FM tuning range:87.5 MHz to 108 MHz FM usable Sensitivity(IHF):13.2 dBf FM antenna terminals:75 ohms (unbalanced) AM tuning range:530 kHz to 1710 kHz (10 kHz step) 531 kHz to 1602 kHz (9 kHz step) AM usable sensitivity:350 ?V/m AM antenna:Loop antenna

4、 AMPLIFIER Main amplifier Power output:125 W + 125 W (50 Hz - 20 kHz, THD less than 1%, 6 ohms) 156 W + 156 W (1 kHz, THD less than 10%, 6 ohms) Total harmonic distortion:0.08% (70 W, 1 kHz, 6 ohms, DIN AUDIO) Main amplifier Power output:Rated: 120 W + 120 W (6 ohms, T.H.D. 1%, 1kHz) Reference: 150

5、W + 150 W (6 ohms, T.H.D. 10%, 1kHz) Total harmonic distortion:0.08% (70 W, 1 kHz, 6 ohms, DIN AUDIO) Satellite amplifier Power output:15 W + 15 W (50 Hz - 20 kHz, THD less than 1%, 8 ohms) 18 W + 18 W (1 kHz, THD less than 10%, 8 ohms) Total harmonic distortion:0.2% (7 W, 1 kHz, 8 ohms, DIN AUDIO)

6、Satellite amplifier Power output:Rated: 16 W + 16 W (8 ohms, T.H.D. 1%, 1kHz) Reference: 20 W + 20 W (8 ohms, T.H.D. 10%, 1kHz) Total harmonic distortion:0.2% (7 W, 1 kHz, 8 ohms, DIN AUDIO) Input:VIDEO/AUX: 700 mV MIC: 1.7 mV (10 kohms) Output:FRONT SPEAKERS: 6 ohms or more STAELLITE SPEAKERS: 8 oh

7、ms or more PHONES: 32 ohms or more CASSETTE DECK Track format:4 tracks, 2 channels stereo Frequency response:50 Hz - 15 kHz Recording system:AC bias Heads:DECK 1: playback x 1 DECK 2: recording/playback x 1, erase x 1 CASSETTE DECK Track format:4 tracks, 2 channels stereo Frequency response:CrO2 tap

8、e: 50 Hz 15000 Hz Normal tape: 50 Hz 15000 Hz Recording system:AC bias Heads:DECK 1: playback x 1 DECK 2: recording/playback x 1, erase x 1 CD PLAYER Laser:Semiconductor laser (?= 780 nm) D/A converter:1 bit dual Signal-to-noise ratio:85 dB (1 kHz, 0 dB) Harmonic distortion:0.05 % (1 kHz, 0 dB) FRON

9、T SPEAKERS SX-NAJ801 ( only for NSX-AJ800) Speaker system:3 way, bass reflex (magnetic shielded) Speaker units:Woofer: 160 mm (63/8 in.) cone Tweeter: 60 mm (23/8 in.) cone Super tweeter: 20 mm (13/16 in.) ceramic Impedance:6 ohms Dimensions (W x H x D): 230 x 324 x 224 mm ( 91/8 x 127/8 x 87/8 in.)

10、 Weight:3.8 kg (8 lbs 6 oz) FRONT SPEAKERS SX-WNSZ800 ( only for NSX-SZ800) Speaker system:3 way, Built-in subwoofer (magnetic shielded type) Speaker units:Subwoofer: 160 mm cone type Full range: 100 mm cone type Super tweeter: 20 mm ceramic type Impedance:6 ohms Dimensions (W x H x D): 230 x 324 x

11、257 mm Weight:4.8 kg SATELLITE SPEAKERS SX-S85 Speaker system:Full range (magnetic shielded type) Speaker units:80 mm cone type Impedance:8 ohms Sensitivity:87 dB/W/m Dimensions (W x H x D): 100 x 325 x 95 mm ( 4 x 127/8 x 33/4 in.)(with pedestal) 100 x 186 x 84 mm ( 4 x 73/8 x 33/8 in.)(without ped

12、estal) Weight:0.6 kg (1 lbs 5 oz) GENERAL Power requirements:120 V AC, 60 Hz 120 V/220 - 230 V/240 V AC (Switchable), 50 Hz/60 Hz Power consumption:140 W, 180 W Power consumption in standby mode:With ECO mode on: 0.6 W With ECO mode off: 24 W, 26 W Dimensions ( W x H x D): 260 x 326 x 345 mm (101/4

13、x 127/8 x 135/8 in.) Weight:8.4 kg (18 lbs 8 oz), 8.9 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 This set employs laser. Therefore, be sure to follow car

14、efully 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 DISTANCE OF MORE THAN 30cm FROM THE SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL PICK-UP B

15、LOCK. Caution: Invisible laser radiation when open and interlocks defeated avoid exposure to beam. sAdvarsel: Usynlig laserstling ved bning, nr sikkerhedsafbrydere er ude af funktion. Undg udsttelse for strling. VAROITUS! Laiteen Kyttminen muulla kuin tss kyttohjeessa mainitulla tavalla saataa altis

16、taa 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 grnsen fr laserklass 1. CLASS 1LASER PRODUCT KLASSE 1LASER PRODUKT LUOKAN 1LASE

17、R LAITE KLASS 1LASER APPARAT 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 ce

18、ux 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 the rear e

19、xterior. 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 touch the diode. 1) After the connection, remove solder shown in right figure. PICK-UP ASSY

20、PWB 3 Solder 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 can change depending on the

21、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 confirmin

22、g 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, be sure to

23、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”. Good or no

24、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 abnormality detection circuit is judged to be working correctly and t

25、he 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

26、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 power cord. 22222Connect a discharging resistor at an end of l

27、ead 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 the discharging resistor as step 33333 to the negative (-) side

28、 (-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.B D101 C101C102 22 34 4 In such a case, check also if the POW

29、ER 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 software reset (pressing the STOP key + POWER key) is p

30、erformed. 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 good of the MICROCOMPUTER. 11111Remove the AC power co

31、rd. 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. Note: The reference number or MICROCOMPUTER pin number of tr

32、ansistor (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 soldering state of the MICROCOMPUTER in addition to

33、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 C113 * % C113 18 15 Short with tweezers. 5 6 DISASSEMBLY INST

34、RUCTIONS 1. How to Remove PANEL, MOVE ASSY Remove the outside ornamental parts, CD mechanism, CABI. FR before starting the following procedure. 1) Remove the FFC (1) and the three screws (2). Then remove HLDR, MECHA ASSY. 2) Remove the eight screws (1) and remove the PWB. FR (2). 3)Remove the three

35、FFC (1), (2), (3). 4)Remove the two screws (1) and remove the HLDR, PANEL 2 (2). Then remove PANEL, MOVE 2 ASSY (3). 5)Remove the screw (1) and the HLDR, PANEL (2). Then remove PANEL, MOVE 1 ASSY (3). 7 2. How to Disassemble PANEL, MOVE 1 ASSY 1)Insert a screwdriver tip into the clearance on top of

36、the PANEL, MOVE 1 ASSY (1) and remove the PANEL, MOVE 1 F (3). 2)Remove the claw (1) and remove the PWB, M-OPE PANEL (2). 3. Note when Re-installing the HLDR, MECHA ASSY Re-installing the HLDR, MECHA ASSY after the PANEL, MOVE is closed. Re-install it in a way that the LEVER SW of the HLDR, MECHA AS

37、SY is located beneath the PANEL, MOVE 1 ASSY. KANRI NO. REF. NO.DESCRIPTIONPART NO.KANRI NO. REF. NO.DESCRIPTIONPART NO. ELECTRICAL MAIN PARTS LIST 8 ? ? ? ? ? ? ? ?!? ? ?!? ? ? ? ? !?!# ?!?$ ?!?%?&? ?!? ?!?$ ?!?!? ?!?(? ?!? ?!?!? ?!? ?!?(!?$ ?!?(? ?!?(? ?!? ?!?(!?$ ?!?!? ?!?(? ?!? ?!?) ?!? ? ?!?(? ?!?(? ?!? ?!? ?!? ?!?%?&? ?!?(? ?!?) ?!?#*) ?!? ?#? ?#?$?%? ?#?$? ?+?+? ?+?+? ?#? ?#? ?#? ?#?%?! ?#? ?+?+?&? ?+?+?&? ?+?+?&? ?+?+? ?+?+?&? ?+?+?&? ? ?+?+? ?&? ?#? ? ?#? ? ?&?+? ?&?+? ?&?+? ?&?+? ?&? ?&? ?&? ?&? ?( ?( ?$ ?&? ?$? ?$ ?$ ?!? ?&? ?&?$ ?$ ?$ ?&? ? ? ?&?$ ?&?$ ?&?$ ?&?$ ?$ ?$ ? ? ?