Icom IC-7851 Servise Manual page 177

CTRL UNIT (CTRL-2)
J101
[CTIN]
TO FILTER J904
L101
LR-502
R255
180
RL255
Q257
LMUN5211
Q258 SIP-1A
LMUN5211
J351
L351
[RX-ANT]
82N
TO CONNECT J101
RL254
SIP-1A
Q255 Q256
LMUN5211 LMUN5211
J251
[TUIN]
C250 1P
TO NETWORK J2
R252
CSA70
J252
[TUOT]
TO NETWORK J3
J301
[TX/RX-A]
TO ANT-SW J1 MP301
2427
REFL
C102 FORL
D101 C122 68P
2P
C121 56P
R118
C104 20P
R105
0
R103
BAT68 220K
R101 10K
10
C119
47P
R102
10
R119 R104
R106
D102
0 3.9k
BAT68
220K
C116
C103
75P
C106
75P
2P
R157 R158
C151 C156
10K
100
0.0047
3P
D151 IC151
1
2
3
4
BAT68 5
6
R155
C155
7
100
82P
TC74AC04F
L151
D152 R159
10K
LR-502
BAT68
C202
D202
1P
L201
BAT68
LR-502
D201
Q201
2SK433
BAT68
L403
1 10
3 8
5 6
LR-527 Q252
Q253
L404
1 10
3 8
5 6
LR-527
RL252
THRU1
FTR-F1
RL253
R309
R310
FTR-F1
D301
2
C301
1P
3
R308
BAT68
D302
L301
R304 R305
82K 220K
BAT68
LR-502
R115
2.7M
R111
2.7M
R113
3
1 1K
2
IC101
NJM4558M
R112
1.2M
R114
5
7 1K
6
IC101
NJM4558M
IC153
R160
1 5
2
47
R164
3 4
14
47
TC7SZ32F
13
12 C180 0.1 IC155
11 1 5
10 C173 0.01 2
9 IC154 3 4
R161
8 5
1
TC7SZ32F
2
47
R165
3 4 C175
0.01
47
TC7SZ32F
0.1
C181
C174 0.01
Q151
LMUN5211
Q153
LMUN5111
Q152
LMUN5211
R221
82K
R213
R214 5.6k 3
C211
5.6k
0.0047
2
R211 R215
1k
100k
R210
R222
100K
220
R216
C212 R217 5.6k 5
0.0047
6.8k
R212
6
10K
R218
100k
Q254
LMUN5211
R439 EP13
150 MMZ1608B301CT
EP4
DSA700400
MPZ1608S221A
DSC7004S0
R440
470
EP12
MMZ1608B301CT
EP3
MPZ1608S221A
220K
L302
2.2M
100U
1
IC301
NJM2903M R311
2.2M 10K
6
7
8
5
V+ IC301
IC301
NJM2903M GND
NJM2903M
4
L102
10U
8 IC101
V+
GND
NJM4558M
4
L103
100U
L152
10U
R170 C163 R173
IC156
3.3K
47 220P
2Q GND
9 8
2PR 2Q
10 7
2J 1Q
11 6
2K 1Q
12 5
R168 2CK 1PR
13 4
2CLK 1J
14 3
D154
47 1CLK 1K R171 C164
15 2
VCC 1CK
16 1
220P
47
TC74ACT112F
BAT68
2.6
IC201
NJM4558M
R225
R227
1 10K
10K
R223
1.5M
8
V+ IC201
2.3
IC201
GND NJM4558M
NJM4558M
R226
R228 4
7 10K
10K
R224
1.5M
*: Refer to the PARTS LIST for the value and name of component.
9-34
REF
FOR
+5VL
FOR
FOR
REF
-12VL
REF
R
R
P
P
+5VL
CTRL-1
THRU1_
T8V
P
R +5VL
+5VL
TRC
TRC
+15VL
VDD1R5
VDD1R5
-12VL
-12VL
T8V
T8V
FORL
FORL
REFL
REFL
ANTI
ANTI
TRC
VDD1R5
-12VL
CTRL-1
T8V
+15VL
THRU1
THRU1
THRU2
THRU2
THRU1_
THRU1_
THRU1
THRU2
FORL
+5VL
ANTI