Aiwa NS-ZSZ10E, NS-XAJ10, NS-XSZ10 Service Manual

NSX-AJ10

U

NSX-SZ10
NSZ-SZ10E

LH

HA

SERVICE MANUAL

COMPACT DISC STEREO

CASSETTE RECEIVER

SYSTEM

NSX-AJ10

NSX-SZ10

NSX-SZ10E CX-NSZ10E SX-NSZ15

• This Service Manual is the “Revision Publishing” and replaces “Simple
Manual” NSX-AJ10(U)/NSX-SZ10(LH), (S/M Code No. 09-99C-424-8T1).

• If requiring information about the CD mechanism, see Service Manual
of AZG-1 ZD8RNDM, (S/M Code No. 09-001-335-3N6) and
AZG-1 ZD8RNDC, (S/M Code No. 09-001-335-3NA).

CD

CASSEIVER

CX-NAJ10 SX-NAJ12

CX-NSZ10 SX-NSZ15 RC-ZAS02

BASIC TAPE MECHANISM : ZZM-2 PR1NM / PR1NC
BASIC CD MECHANISM : AZG-1

SPEAKER

CD

MECHANISM

ZD8RNDC

ZD8RNDC

ZD8RNDM

REMOTE

CONTROLLER

S/M Code No. 09-003-424-8R1

REVISION

DATA

SPECIFICATIONS <HA,LH>

<FM tuner section>
Tuning range 87.5 MHz to 108 MHz
Usable sensitivity (IHF) 13.2 dBf
Antenna terminals 75 ohms (unbalanced)

<AM tuner section>
Tuning range 530 kHz to 1710 kHz (10 kHz step)

Usable sensitivity 350
Antenna Loop antenna

<Amplifier section>
Power output Rated

Total harmonic distortion 0.1 % (14 W, 1 kHz, 6 ohms,

Inputs VIDEO/AUX: 500 mV
Outputs SPEAKERS: accept speakers of 6

<Cassette deck section>
Track format 4 tracks, 2 channels stereo
Frequency response 50 Hz – 8000 Hz
Recording system AC bias
Heads Deck 1 : Recording/playback head

531 kHz to 1602 kHz (9 kHz step)

μV/m

28 W + 28 W
(1 kHz, T.H.D. 1 %, 6 ohms)
Reference
35 W + 35 W
(1 kHz, T.H.D. 10 %, 6 ohms)

DIN AUDIO)

ohms or more
PHONES (stereo jack): accepts
headphones of 32 ohms or more

x 1, erase head x 1

Deck 2 : Playback head x 1

<Compact disc player section>
Laser Semiconductor laser (λ =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)

<Speaker system SX-NSZ15>
Speaker System 2 way, bass reflex (magnetic

shielded type)

Speaker units Woofer:

120 mm cone type
Tweeter:
20mm ceramic type

Impedance 6 ohms
Sensitivity 86 dB/W/m
Dimensions (W x H x D) 220 x 324 x 204 mm
Weight 2.0 kg

<General>
Power requirements 120 V/220-230 V/240 V AC

(switchable), 50/60 Hz

Power consumption 55 W
Power consumption With power-economizing
in standby mode mode off : 12 W

With power-economizing
mode on : 0.9 W

Dimensions of main unit 260 x 324 x 346 mm
(W x H x D)
Weight of main unit 5.7 kg

• Design and specifications are subject to change without notice.

SPECIFICATIONS <U>

<FM tuner section>
Tuning range 87.5 MHz to 108 MHz
Usable sensitivity (IHF) 13.2 dBf
Antenna terminals 75 ohms (unbalanced)

<AM tuner section>
Tuning range 530 kHz to 1710 kHz (10 kHz step)

Usable sensitivity 350
Antenna Loop antenna

<Amplifier section>
Power output Rated

Total harmonic distortion 0.1 % (6 W, 1 kHz, 6 ohms,

Inputs VIDEO/AUX: 500 mV
Outputs SPEAKERS: accept speakers of 6

<Cassette deck section>
Track format 4 tracks, 2 channels stereo
Frequency response 50 Hz – 8000 Hz
Recording system AC bias
Heads Deck 1 : Recording/playback head

531 kHz to 1602 kHz (9 kHz step)

μV/m

10 W + 10 W
(50 Hz to 20 kHz, T.H.D. 1 %, 6 ohms)
Reference
15 W + 15 W
(1 kHz, T.H.D. 10 %, 6 ohms)

DIN AUDIO)

ohms or more
PHONES (stereo jack): accepts
headphones of 32 ohms or more

x 1, erase head x 1

Deck 2 : Playback head x 1

<Compact disc player section>
Laser Semiconductor laser (λ =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)

<Speaker system SX-NAJ12>
Speaker System 2 way, bass reflex (magnetic

shielded type)

Speaker units Woofer:

120 mm cone type
Tweeter:
20mm ceramic type

Impedance 6 ohms
Sensitivity 86 dB/W/m
Dimensions (W x H x D) 220 x 324 x 235 mm
Weight 2.0 kg

<General>
Power requirements 120 V AC, 60 Hz
Power consumption 38 W
Power consumption With power-economizing
in standby mode mode off : 8.0 W

With power-economizing
mode on : 0.9 W

Dimensions of main unit 260 x 324 x 346 mm
(W x H x D)
Weight of main unit 5.7 kg

• Design and specifications are subject to change without notice.

– 2 –

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

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 OBJECTIVE LENS ON THE OPTICAL

PICK-UP BLOCK.

Caution: Invisible laser radiation when

open and interlocks defeated avoid expo-

sure to beam.

Advarsel:Usynling laserståling ved åbning,

når sikkerhedsafbrydere er ude af funktion.

Undgå udsættelse for stråling.

VAROITUS!

Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa mainit-

ulla tavalla saattaa altistaa käyt-täjän turvallisuusluokan 1 ylit-

tävälle 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.

CAUTION

Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous

radiation exposure.

ATTENTION

L'utilisation 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.

CLASS 1
KLASSE 1
LUOKAN 1
KLASS 1

LASER PRODUCT
LASER PRODUKT
LASER LAITE
LASER APPARAT

Precaution to replace Optical block
(KSM-880CAB)

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
the right figure.

PICK-UP Assy P.C.B

solder

– 3 –

NOTE ON BEFORE STARTING REPAIR

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

1 Remove the AC power cord.
2

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

3 Contact the other end of the discharging resistor to the

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

4

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

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.

Charging voltage (V) Discharging

(C101, 102) resistor (Ω)

25-48 100 3 87-A00-247-090

49-140 220 5 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.

Rated power (W) Parts number

MAIN C.B

D101

3

C101 C102

22

Fig-1

4

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

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.

– 4 –