AIWA NSXWV89 - Service Manual Immediate Download

SERVICE MANUAL

COMPACT DISC STEREO

CASSETTE RECEIVER

BASIC TAPE MECHANISM : 2ZM-3MK2 PR7NM

BASIC CD MECHANISM : AZG-1 VZD3RNDM

NSX-WV89 HR

S/M Code No. 09-006-433-5R1

REVISION

· This Service Manual is the "Revision Publishing" and replaces "Simple Manual"

NSX-WV89 (HR), (S/M Code No. 09-004-433-5T1).

· If requiring information about the CD mechanism, see Service Manual of

AZG-1 VZD3RNDM, (S/M Code No. 09-001-335-3NG).

NSXWV89

MAIN

SPEAKER

SYSTEM

CASSEIVER

REMOTE

CONTROLLER

RCZAS08

CXNWV89

SXNDP84

Tuning range

87.5 MHz to 108 MHz

Usable sensitivity (IHF)

13.2 dBf

Antenna terminals

75 ohms (unbalanced)

Tuning range

531 kHz to 1602 kHz (9 kHz step)

530 kHz to 1710kHz (10 kHz step)

Usable sensitivity

350

µV/m

Antenna

Loop antenna

Tuning range

5.730 MHz to 17.900 MHz

Antenna

Wire antenna

Power output

Front

Rated: 115 W + 115 W (6 ohms, T.H.D.

1 %, 1 kHz/DIN 45500)

Reference: 145 W + 145 W (6 ohms,

T.H.D. 10 %, 1 kHz/DIN 45324)

Rear (Surround)

Rated: 25 W + 25 W (8 ohms, T.H.D.

1 %, 1 kHz/DIN 45500)

Reference: 35 W + 35 W (8 ohms,

T.H.D. 10 %, 1 kHz/DIN 45324)

Center

Rated: 30 W (8 ohms, T.H.D.

1 %, 1 kHz/DIN 45500)

Reference: 40 W (8 ohms,

T.H.D. 10 %, 1 kHz/DIN 45324)

Total harmonic distortion

0.1 % (10.5 W, 1 kHz, 6 ohms,

DIN AUDIO/Front )

Inputs

VIDEO/AUX: 316 mV (adjustable)

MD: 316 mV (adjustable)

MIC 1, MIC 2:

1.0 mV (10 kohms)

5.1 CH INPUT (adjustable)

FRONT (L,R): 330 mV

REAR (L,R): 200 mV

CENTER: 510 mV

SUB WOOFER: 360 mV

Outputs

FRONT SPEAKERS:

accept speakers of 6 ohms or more

SURROUND SPEAKERS:

accept speakers of 8 ohms to 16 ohms

or more

CENTER SPEAKER:

accept speakers of 8 ohms or more

SUBWOOFER: 1.1 V

VIDEO OUT: 1.0 Vp-p (75 ohms)

LINE OUT: 210 mV

PHONES (stereo jack): accepts

headphones of 32 ohms or more

SPECIFICATIONS

Track format

4 tracks, 2 channels stereo

Frequency response

CrO

2 tape: 50 Hz 16000 Hz

Normal tape: 50 Hz 15000 Hz

Recording system

AC bias

Heads

Deck 1: Playback head x 1

Deck 2: Recording/Playback head x 1,

erase head x 1

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)

Wow and flutter

Unmeasurable

Video signal

NTSC/PAL color format (selectable)

Video data

MPEG 1

Audio data

MPEG 1, LAYER 2

Power requirements

120 V/220230 V/240 V AC

(switchable), 50/60 Hz

Power consumption

245 W

Power consumption in

If the power-economizing mode is

standby mode

ECO OFF: 31 W

If the power-economizing mode is

ECO ON or ECO AUTO: 0.9 W

Dimensions of main unit

260 x 329 x 389.6 mm

(W x H x D)

Weight of main unit

12.2 kg

Speaker system

2 way, bass reflex (magnetic

shielded type)

Speaker units

Woofer:

160 mm cone type

Tweeter:

60 mm cone type

Impedance

6 ohms

Sensitivity

87 dB/W/m

Dimensions (W x H x D)

240 x 324 x 245 mm

Weight

5.0 Kg

· Design and specifications are subject 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 "BBE"and the "BBE symbol" are trademarks of BBE

Sound, Inc.

Under license from BBE Sound,Inc.

CLASS 1

LASER PRODUCT

KLASSE 1

LASER PRODUKT

LUOKAN 1

LASER LAITE

KLASS 1

LASER 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. 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 OBJEC-

TIVE LENS ON THE OPTICAL PICK-UP BLOCK.

s Caution: Invisible laser radiation when

open and interlocks defeated avoid

exposure to beam.

s Advarsel: Usynlig laserståling ved åbning,

når sikkerhedsafbrydere er ude af funktion.

Undgå udsættelse for stråling.

VAROITUS!

Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa

mainitulla

tavalla

saataa

altistaa

käyt-täjän

turvallisuusluokan 1 ylittävälle näkymättömälle

lasersäteilylle.

VARNING!

Om apparaten används på annat sätt än vad som

specificeras i denna bruksanvising, kan användaren

utsättas för osynling laserstrålning, som överskrider

gränsen för 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

L'utillisation de commandes, réglages ou procédures

autres que ceux spécifiés peut entraîner une dangereuse

exposition aux radiations.

ADVARSEL

Usynlig laserståling ved åbning, når sikkerhedsafbrydereer

ude af funktion. Undgå udsættelse for stråling.

This Compact Disc player is classified 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 touch the diode.

1) After the connection, remove solder shown in

right figure.

PICK-UP Assy P.C.B

Solder

NOTE ON BEFORE STARTING REPAIR

Charging voltage (V)

Discharging

Rated power (W)

Parts number

(C101, 102)

resistor (

)

25-48

100

87-A00-247-090

49-140

220

87-A00-232-090

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 MICROCOMPUTER

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 MICROCOMPUTER 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

abnormalities 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 When the HOLD terminal 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, 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 starting repair work.

Discharge procedure

1 Remove the AC power cord.

2 Connect 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.

3 Contact the other end of the discharging resistor to the

positive (+) side (+VH) of C101. (For two seconds)

4 Contact the same end of the discharging resistor as step

3 to the negative (-) side (-VH) of C102 in the same way.

(For two seconds)

5 Check 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

C101

C102

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 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

good of the MICROCOMPUTER.

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 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

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

MICR

OCOMPUTER

FRONT C.B

VSS

VDD

C113

Short with tweezers.