Icom IC-T70A Service Manual page 37

MAIN UNIT (2/4)
AF FILTER
R51
0.69V
6.8k
2.62V
2.2M
C57 C58 C61
0.01
R50 0.0027 0.0018
C63
4 3
0.033
5 2
2.04V
6 1
4.96V
0.11V
1.60V
C45
R32
1 560
R45
DTMF
100k R49 47k
4.99V 4.96V 4.89V
5.00V
4.37V
4.28V
4.23V
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R63 R64
R62
39k 22k 12k
C241
0.0033
C240 R234
VOLDA
330P 100k
VOLCK
RTEMP
REMOT E
AFSTBY
DIUD2
NOIS
DICK2
BTDET
DCIN
DIUD
D ICK
I1
I0
KS4
CP103
CP104
CP105
R256
CP106
CP107
0
CP108
CP109
CP110
2.07V
39k
C65
R222
Q10
0.033
1.46V
4
R54 R59
Q204
5
68k 68k
6
XP4601
LDTC144EE
D TCS
0.80V
R611 0k
TX FILTER
DTMF
103
104
105
106
107
108
109
110
111
112
113
114
115 IC907
116
UPD78F1508G F
117
118
119
120
121
122
123
124
125
126
127
128
R255
0
C78
C76
C77
C79
1
TONE FILTER
C952
0.70V
10
3
IC908
2 1 16
STR V+
0.13V 2 15
D OE
1 3 14
CLK Q5
4 13
100k
Q1 Q6
5 12
R69
Q2 Q7
6 11
Q3 Q8
7 10
Q4 Q'S
8 9
GND QS
CD4094BPWR
C285
22P
2.45V
R206
82
C202
0.001
R201
10k
1.67V
2.35V
Q203 R200
1k
2SA1832
C208
22P R207 R208
22P 22P 22P 22P
0.001
27 27
64 SEG28
63 SEG29
62
SEG30
61
SEG31
60
SEG32
59
58 SQLSW
57 MMUT E
56 TXMUTE
55 SPMUTE DS204
54 DETMUT E COM0 1
COM0
53 PLLSW COM1 2
COM1
52 3
INTMIC COM2
COM2
51 4
PS5C COM3
COM3
50 5
IOEN SEG0
SEG0
49 IOSTB SEG1 6
SEG1
48 T5C SEG2 7
SEG2
47 R5C SEG3 8
SEG3
46 DALD SEG4 9
SEG4
45 DADI SEG5 10
SEG5
44 DACLK SEG6 11
SEG6
43 PPS SEG7 12
SEG7
42 13
PLLSTB SEG8
SEG8
41 14
PLLCK SEG9
SEG9
40 15
PLLDATA SEG10
SEG10
39 ECK SEG11 16
SEG11
SEG12 17
SEG12
SEG13 18
SEG13
SEG14 19
SEG14
SEG15 20
SEG15
SEG16 21
SEG16
SEG17 22
SEG17
23
SEG18
SEG18
24
SEG19
SEG19
25
SEG20
SEG20
SEG21 26
SEG21
SEG22 27
SEG22
SEG23 28
R216 SEG23
SEG24 29
SEG24
SEG25 30
12k SEG25
SEG26 31
SEG26
SEG27 32
SEG27
33
SEG28
SEG28
34
SEG29
R213 HVC376B SEG29
CSHIFT 35
SEG30
SEG30
SEG31 36
100k D200 SEG31
SEG32 37
SEG32
TAK-35414
CR-864
X200 LCD
R217
10
R215
1M
IC201
8
1
A0 VCC
2 7
A1 WP
3 6
A2 SCL
4 5
VSS SDA
S-24CS64A0I
NOTICE: Refer to the PARTS LIST for the value and name of each component.
10 - 2
UVCO_SEL
VVCO_SEL
5VS
VCOMOD
C201
10
LIGHT
C200
0.001 REFMOD
REFCON
TXMUTE
UHFC
VHFC
VCO_SHIFT
VCO_MUTE
PLLSW
PPS
PLLSTB
PLLDATA
PLLCK
UNLOCK
BPF1
BPF2
BPF3
T5
VCC- I
R5
5VS
TTEMP
SD
NOIS
DETO
DET
DETMUTE
SQLSW
WN