AIWA XSG3 - Service Manual Immediate Download

SERVICE MANUAL

COMPACT DISC

STEREO SYSTEM

BASIC TAPE MECHANISM : BZM-1 R1NM

BASIC CD MECHANISM : BZG-5 ZD3NM

XS-G3

XS-G4

XS-G5

U,LH,EZ,K

EZ,K

S/M Code No. 09-013-441-5R1

REVISION

SPEAKER

SYSTEM

CASSEIVER

REMOTE

CONTROLLER

XSG3(U,LH)

RCBAS11

CXG3

SXG3

RCBAS03

XSG3(EZ,K)

CXG3

SXG3

RCBAS11

XSG4(EZ)

CXG4

SXG4

RCBAS11

XSG5(EZ)

CXG5

SXG5

RCBAS03

XSG5(K)

CXG5

SXG5

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

XS-G3 (U,LH,EZ,K) / XS-G4 (EZ) / XS-G5 (EZ,K), (S/M Code No. 09-012-441-5T1).

· If requiring information about the CD mechanisim, see Service Manual of BZG-5,

(S/M Code No. 09-00C-353-3N2)

SPECIFICATIONS

Tuning range

87.5 MHz to 108 MHz

Usable sensitivity (IHF)

EZ,K: 16.8 dBf

U,LH: 13.2 dBf

Antenna terminal

75 ohms (unbalanced)

Tuning range

531 kHz to 1602 kHz (9 kHz step)

530 kHz to 1710 kHz (10 kHz step)

Usable sensitivity

350

µV/m

Antenna

Loop antenna

Tuning range

144 kHz to 290 kHz

Usable sensitivity

1400

µV/m

Antenna

Loop antenna

Power output

EZ,K:

Rated: 40 W + 40 W (6 ohms,

T.H.D. 1 %, 1 kHz/DIN45500)

Reference: 50 W + 50 W (6 ohms,

T.H.D. 10 %, 1 kHz/DIN45324)

EZ:

DIN MUSIC POWER: 121 W + 121 W

U: 60 W + 60 W (50 Hz 20 kHz,

T.H.D. less than 1 %, 6 ohms)

75 W + 75 W (1 kHz, T.H.D. less than

10 %, 6 ohms)

LH:

Rated: 60 W + 60 W (6 ohms,

T.H.D. 1 %, 1 kHz)

Reference: 75 W + 75 W (6 ohms,

T.H.D. 10 %, 1 kHz)

Total harmonic distortion

EZ,K:

0.08 % (25 W, 1 kHz, 6 ohms, DIN

AUDIO)

U,LH:

0.08 % (30 W, 1 kHz, 6 ohms, DIN

AUDIO)

Inputs

VIDEO/AUX: 500 mV

LH ONLY: MIC: 1.7mV (10 kohms)

Output

SPEAKERS: 6 ohms or more

PHONES: 32 ohms or more

Track format

4 tracks, 2 channels stereo

Frequency response

50 Hz 15000 Hz

Recording system

AC bias

Heads

Recording/playback x 1, erase 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)

Speaker system

2 way, bass reflex (magnetic shielded)

Speaker units

Woofer: 140 mm cone

Tweeter: 60 mm cone

Impedance

6 ohms

Dimensions (W x H x D)

165 x 328 x 225 mm

Weight

3.5 kg

Speaker system

2 way, bass reflex (magnetic shielded)

Speaker units

Woofer: 140 mm cone

Tweeter: 60 mm cone

Impedance

6 ohms

Dimensions (W x H x D)

170 x 328 x 268 mm

Weight

3.8 kg

Power requirements

EZ,K: 230 V AC, 50 Hz

U: 120 V AC, 60 Hz

LH: 120 V / 220 230 V / 240 VAC

(Switchable), 50 Hz / 60 Hz

Power consumption

U: 65 W

LH: 85 W

EZ: 70 W

K: 78 W

Power consumption

With ECO mode on: 0.6 W

in standby mode

U,EZ,K: With ECO mode off: 17 W

LH: With ECO mode off: 18 W

Dimensions of main unit

U,EZ,K: 260 x 271.5 x 355 mm

(W x H x D)

(101/4 x 103/4 x 14 in.)

LH: 260 x 271.5 x 364 mm

Dimensions (W x H x D)

260 x 301 x 292 mm

Weight

U,EZ,K: 6.5 kg (14 lbs 5 oz)

LH: 6.8 kg

· Design and specifications are subject to change without notice.

· 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 PWB

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.