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Kenwood KCH-20R Service Manual page 21

Remote control head
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INTERFACE UNIT (XC3-0110-20)
Separate I/F
CN5
1
/PRST
2
/PSW
3
MICA+
5
MICA-
4
5
MICB+
6
MICB-
1SR154-400
7
GND
8
NC
F1
9
SB
10
FZA10BS-5R0
NC(IGN)
AFiA+
11
12
AFiA-
13
AFiB+
14
AFiB-
15
CAN+
16
CAN-
4
3
ACC I/F
CN2
GND
13
IGN
12
D1
SB
11
MINISMDC020F
GND
10
AUX_MIC
9
AUX_ME
8
2
Ai1
7
Ai2
6
Ao1
5
Ao2
4
SP-
3
SP+
2
GND
1
1 IGN
2 SB
3 GND
1
4 MIC
5 ME
3
6
9
6 AI1
7 AI2
2
5
8
8 AO1
9 AO2
1
4
7
10 RS1
11 RS2
12 NC
A
B
/PRST
D5
REVERCE CURRENT PREVENTION
SB
5A
CAN+
CAN-
L1
SB
C71
1000p
D1
IC1,D4
CURRENT PROTECTION
DC-DC CONVERTER (53DC)
ACC_MiC
ACC_ME
AUXi0
IC2
D6
AUXi1
AUDIO POWER AMP (CLASS D)
SPC10501A01
D7
AUXo0
SPC10501A01
LM48310SD
D8
AUXo1
6
SYNC_oUT
SPC10501A01
L4
D9
SP-
7
oUTB
SPC10501A01
8
GND
9
PVDD
L5
10
oUTA
SP+
L2
12
11
10
C
(No.RA027<Rev.001>) 2-3
/PSW
MiCA+
MiCA-
MiCB+
MiCB-
AFiA+
AFiA-
AFiB+
AFiB-
E1
Shield Case For 53DC
L6
5.35V
L11
10u
S1
S7K-0003-00
IC2
AMP_PD
TX:0V
RX:3.30V
R52
STANDBY:0V
SYNC_IN 5
0
R23
/AMP_PD
SD 4
1k
1.603Vrms
VDD 3
C31
R21
0
AFi-
1.603Vrms
IN- 2
0.1u
0
R22
AFi+
IN+ 1
C32
0.1u
L7
53DC
1.5u
D
E
2-3 (No.RA027<Rev.001>)
HEAD UNIT I/F
CN13
SB
36
SB
35
SB
34
SB
33
32
GND
31
GND
30
GND
29
AFi+
AFi+
28
ACC_ME
ACC_ME
27
AFi-
AFi-
26
ACC_MiC
ACC_MIC
25
AFiA+
AFoA+
24
MiCA+
MICA+
100p
C50
23
AFiA-
AFoA-
22
MiCA-
MICA-
C52
100p
21
AFiB+
AFoB+
20
MiCB+
MICB+
C54
100p
19
AFiB-
AFoB-
18
MiCB-
MICB-
C56
100p
17
/PRST
/PRST
16
/PSW
/PSW
15
AUXi0
AUXI0
C57
1000p
14
AUXi1
AUXI1
C58
1000p
13
AUXo0
AUXO0
C59
1000p
12
AUXo1
AUXO1
C60
1000p
11
H_1/2
H_1/2
10
/AMP_PD
/AMP_PD
9
GND
8
GND
7
CAN+
CAN+
6
CAN-
CAN-
5
GND
4
GND
3
53DC
R30
0
53DC
2
53DC
1
F
G

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