Kenwood KCH-16 Service Manual page 63

F
CONTROL UNIT
(X53-4360-20) (B/4)
PTT
CN101 CN102
E37-0674-15
CN3
CN12
CN13
CN14
CN15
CN16 CN17
KEYI2
KEYI1
100
KEYI0 1
KEYO3 2
KEYI0
KEYO2 3
KEYO3
KEYO1 4
KEYO2
KEYO1
KEYO0 5
KEYO0
6
BYTE
R61
7
CNVSS
8
470k
NC
9
SFT
10
RESET
R72 0 11
XOUT
12
VSS
13
XIN
14
VCC
15
NMI
16
R80
NC
47k
17
INT1
R76 0 18
INT0
R77 1k 19
PTT
20
LCONT
LCONT
HOOK 21
HOOK
KVL R74 1k 22
KVL
23
NC
24
NC
25
NC
5V
Q11
Q10
DTC114TE
DTC114TE
TRD SW
TRD SW
TRD
SB
RESET
D17-20
12KEY CONTROL
* 7
S3 S6
0 8
S7
S4
# 9
S5 S8
S3-14
S70-0509-05
G
SCHEMATIC DIAGRAM
CONTROL UNIT
(X53-4360-20) (C/4)
C74
0.01u
VR1
VOL
R31-0672-05
C73
0.01u
CN103 CN104 CN105
E37-1217-05
CN4
C88
0.1u
R78
0
CPU
IC9
3062LFGPUKCTA
R96 470
R97 470
R98 470
D20 R99 470
1SS388F
4 1
R93
S9 S12
470
5 2
R94
S13
S10
470
6 3
R95
S11 S14 470
H
Note : The components marked with a dot (
are parts of layer 1.
R100
47k
R101
47k
ZUP
R102
47k
R103
47k
R104
47k
R105
47k
R106
47k
ZDN
R107
47k
R108
47k
75
NC
74 PF1
PF1
73 PF2
PF2
72 PF3
PF3
71 PF4
PF4
70
A0
69
A1
68
A2
67
A3
66
A4
65
A5
64
A6
63
A7
62
VSS
61
A8
60
VCC
59
A9
58
A10
PF1
57
A11
56
A12
55
A13
54
A14
53
A15
52 PF2
TXG
51
TX
D21
1SS301F
DC SW
KEYO0
D32
BUSY LED RED
KEYO1
D33
KEYO2
BUSY LED GREEN
KEYO3
BUSY LED SW
KEYI0
KEYI1
KEYI2
I J
KCH-16
CONTROL UNIT (X53-4360-20) (A/4)
R117
EUP
1k
R118
EDN
1k
D24-27
Q13
PF KEY BACKLIGHT
UMG4N
Q13
PF KEY BACKLIGHT SW
R147
PF3
1k
PF3
R148
PF4
1k
PF4
D28-31
R149
PF5
PF KEY BACKLIGHT
1k
Q12
UMG4N
Q12
PF KEY BACKLIGHT SW
PF5
CN2
NC 10
E 9
EPM 8
RXD 7
BUSY 6
TXD 5
SCLK 4
RESET 3
CNVSS 2
VCC 1
D34
TX LED RED
D35
TX LED GREEN
TX LED SW
X53-436 2/2
1
•
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2
3
4
5
6
7
63