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A
PC BOARD (FOIL SIDE VIEW)
ELECTRIC UNIT
L
R83
Lch
JC10
D28
D27
R72
14
8
IC3
1
7
Q12
Q11
E
B
E
B
D12
D11
R26
R21
R27
R28
R30
JC1
R22
R23
CN2
1
4
5
8
9
12
13
TO UNIT 2
ELECTRIC UNIT
Ref. No.
Address
IC1
2D
IC2
2D
IC3
2A
IC4
2B
IC6
2E
Q1
2E
Q2
2C
Q3
2C
Q4
2D
Q5
2D
Refer to the schematic diagram for the values of resistors and capacitors.
B
AUX IN
R
AUX
ON
OFF
A.GND
CN4
R38
SH1
R84
AUX.SW
Rch
B
E
E
B
E
B
R77
R78
R74
14
8
IC4
C7
1
7
R75
R76
R15
D10
R19
D33
D16
CN1
D17
R24
1
4
D18
5
8
R13
R14
9
12
R11
13
REQH
D38
TO UNIT 1
Ref. No.
Address
Q6
2A
Q7
2E
Q8
2B
Q9
3D
Q10
2E
Q11
3A
Q12
3A
Q13
2B
Q14
2B
Q15
3D
C
RESET
R31
60
61
R39
IC1
C15
R40
R50
80
C14
X1
1
R43
R49
R48
Q3
C10
J43
J41
J45
R44
J44
J42
R45
R54
R59
C11
R58
R60
CHCON
MUTE
R6
REQC
D
KCA-S220A
C13
R33
B
E
Q1
41
40
C9
D20
B
E
R52
SW2
Q5
SW1
21
J38
R85
20
J37
J36
J39
R95
5V
J40
BU+14V
R4
D36
GND
D26 D25
J33
J32
REQH
CN3
CHCON
1
4
Rch
5
8
R5
9
12
R9
13
Lch
TO HEAD UNIT
E
1
2
J55
B
E
3
4
5
6
7
3
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