AIWA LCX-137 Service Manual
LCX-137 HR(S) HA(S)
VJ(S) HT(S)
HS(S) HC(S)
SERVICE MANUAL
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COMPACT DISC STEREO |
BASIC TAPE MECHANISM : TN-21ZSC-2003 |
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SYSTEM |
BASIC CD MECHANISM : DA11T3C |
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MODEL CODE : 86HR8-0117(B) |
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S/M Code No. 09-003-340-2N1
DATA
SCHEMATIC DIAGRAM-1 (MAIN 1/2)
MAIN C.B (1/2)
J105
TO FRONT C.B CN201
BEAT CUT
HS
TO MAIN C.B 2/2
HS
INV.
IC301
CASSETTE
PER AMP
REG
C121 |
REG |
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137 MODEL:330/25V |
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157 MODEL:470/35V |
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R
SW
IC102
FUNCTION
SWITCH
HOLD DET
HOLD DET
POWER AMP
HS
137 MODEL:1K
157 MODEL:820
137 MODEL:1K
157 MODEL:820
HS
REG
REG
REG
POWER
ON/OFF
POWER
CONT
HS
HS
BIAS OSC
SIGNAL
: PB/FM
: REC/AM
J101
JACK. PIN 3P MSP
SPEAKERS
J101
JACK. 3.5 ST
PHONES
F101
3.15A 250V
AC C.B (1/2)
HS,VJ
230V
50Hz
AC C.B(2/2)
120/220-240V 50/60Hz
120V
AC VOLTAGE
220-240V
PT101 
SW1
AC C.B (2/2)
HR,HC,HA,HT
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14 |
IC BLOCK DIAGRAM |
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IC, M62495AFP |
IC, LA6541D |
AUTO RESET
IC, LA1837NL |
IC, LC72131D |
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16 |
SCHEMATIC DIAGRAM-2 (MAIN: EXCEPT HS 2/2)
TO MAIN C.B (1/2)
MAIN C.B (2/2)
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DC BALANCE |
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R |
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ADJ |
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AM IF ADJ |
FM FRONTEND |
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BAND SW |
PACK |
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*1 |
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TUNER |
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ON/OFF |
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IF AMP |
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SWITCH |
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*2 |
*2 |
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1
2
3
4
L981(2/2) |
AM TRACKING |
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ADJ |
L981(1/2)
IC771
FM/AM IF/STEREO
TUNER SYSTEM
1500P 1500P
*2 |
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*1 |
FEE801 |
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R821 |
R822 |
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VJ |
6ZA-1 |
YFEVNC |
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VJ |
100 |
NO |
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OTHERS |
8ZA-1 |
FEUNC |
MOUNTED |
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OTHERS |
180 |
10K |
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SIGNAL
: PB/FM
: REC/AM
FM 75Ω 
ANTENNA
AM LOOP 
17 |
18 |
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