AIWA LCX-137 Service Manual

LCX-137

HR(S) HA(S)
VJ(S) HT(S)
HS(S) HC(S)

SERVICE MANUAL

COMPACT DISC STEREO

SYSTEM

MODEL CODE : 86HR8-0117(B)

BASIC TAPE MECHANISM : TN-21ZSC-2003
BASIC CD MECHANISM : DA11T3C

S/M Code No. 09-003-340-2N1

DATA

SCHEMATIC DIAGRAM-1 (MAIN 1/2)

TO FRONT C.B CN201

MAIN C.B

(1/2)

J105

TO MAIN C.B 2/2

INV.

HS

HS

IC102

FUNCTION

SWITCH

POWER AMP

REG

C121
137 MODEL:330/25V
157 MODEL:470/35V

REG

HOLD DET

J101

JACK. PIN 3P MSP

R

SW

HOLD DET

SPEAKERS

IC301

CASSETTE

PER AMP

HS

137 MODEL:1K
157 MODEL:820

137 MODEL:1K
157 MODEL:820

REG

HS

REG

POWER

CONT

REG

POWER
ON/OFF

HS

F101

3.15A 250V

PT101

J101

JACK. 3.5 ST

PHONES

(1/2)

AC C.B(2/2)

120V

220-240V

SW1

AC C.B

HS,VJ

230V
50Hz

120/220-240V

50/60Hz

AC VOLTAGE

AC C.B

(2/2)

HR,HC,HA,HT

HS

BEAT CUT

BIAS OSC

SIGNAL

: PB/FM
: REC/AM

1413

IC BLOCK DIAGRAM
IC, M62495AFP

IC, LA6541D

AUTO RESET

IC, LA1837NL IC, LC72131D

1615

SCHEMATIC DIAGRAM-2 (MAIN: EXCEPT HS 2/2)

MAIN C.B (2/2)

TUNER
ON/OFF
SWITCH

DC BALANCE

ADJ

AM IF ADJ

IF AMP

R

BAND SW

*2

*1

FM FRONTEND
PACK

*2

1
2
3
4

FM 75Ω

ANTENNA

AM LOOP

TO MAIN C.B (1/2)

1500P

1500P

IC771

FM/AM IF/STEREO

TUNER SYSTEM

L981(2/2)

*2

VJ 100

AM TRACKING

R821 R822

NO
MOUNTED

180OTHERS

10K

ADJ

*1

VJ 6ZA-1

OTHERS FEUNC

L981(1/2)

FEE801

YFEVNC

8ZA-1

SIGNAL

: PB/FM
: REC/AM

1817