Icom IC-2800H Service Manual page 42

Dual band fm transceiver
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1
2
3
R3 100
4
R4 100
R5 100
IC7 TC7W14FU
R6 100
R7 100
R8 100
1 C22
47p
R9 100
R10 100
R11 100
R13 100
R12 100
C16
47p
C177
220p
C70
C183
0.01
220p
C150
0
0.1
0
C151
1
0.1
0
2
0
C184
C152
220p
0.1
C185
220p
C133
0.1
C134
0.1
C135
0.1
C189
220p
R84
C190
C191
2.7k
220p
220p
C71
C80
0.01
0.01
C188
R86
220p
82k
BRITV
CONTV
C72
C79
220p
220p
W12
W11
C57
R112
0.1
8
10k
7
6
C56
5
270p
13
U/D
14
POL
15
INT/EXT
16
CPV
17
OEV3
IC1
18
OEV2
MN83951
19
OEV1
20
STV
21
OEH
22
OH
23
STH
24
CPH4
IC6 M52338FP
17
B OUT
18
SUB BIAS B
19
G OUT
20
SUB BIAS R
21
R OUT
22
FRP1 IN
23
BRIGHT
24
CONTRAST
25
GAM1
26
GAM2
27
EXT IN R
28
SUB CONT R
29
EXT IN G
30
SUB CONT B
31
EXT IN B
32
VCC1
R87
R63
4.67
33k
220
R89
C83
R65
C67
C186
68k
0.01
33k
0.01
220p
C187
C81
C82
220p
0.01
0.01
R173
+
470
R255
C101
15k
10
C31
0.1
C33
+
0.1
R14
48
27k
VSS
D1
47
1SS355
VDD
46
PN1
45
HPOS1
W14
44
HPOS2
43
C25
HPOS3
W10
0.1
42
HPOS4
41
UONS
40
L8
HDOT1
2.7 H
39
RESET
38
VSS
37
VCOO
R15
470k
W4
C24
120p
C178
220p
R273
2.7k
16
GND
15
BIAS COUNT
14
COM OUT
C179
13
220p
COM GAIN
12
FRP2 IN
11
VEE
10
VCC2
9
CP CONT
8
HD IN
7
SW
6
CLAMP B
5
MAIN IN B
4
CLAMP G
3
MAIN IN G
2
CLAMP R
1
MAIN IN R
C196
C199
C181
C200
220p
220p
220p
220p
D9
R254
R289
1SS355
100k
15k
COMPLETE VIEW
R284
3.15
100
D12
MA8033 L
R26
L7
50k
10 H
C30
C26
39p
560p
D2
C34
R25
10
1SV282
27k
C27
0.1
R17
R16
C23
68k
10k
0.001
1.71
R18
1M
R20
5
1
68k
4
+
5.11
3
2
1.81
R21
R22
22k
47k
IC2
TC75S51F
1.72
CP1
L16
4.88
10 H
+
C77
C194
C78
0.1
220p
10
Q11
2SC4081 R
3.26
C54
R106
4.7
560
C92
470p
R100
150k
R107
2.62
680
IC16
M52042FP
M52045FP
1
V IN
C176
2
220p
SYNC IN
3
ACC FIL
4
W6
SYNC OUT
5
HD
6
PED CAP
C86
C91
7
C TRAP
0.1
0.1
8
Y OUT
9
C85
C90
CONT
10
0.1
0.1
R OUT
11
C84
C89
G OUT
12
0.1
0.1
B OUT
R291 22
R257
R167
39k
C44
D13
56k
4.7
MA8043 L
4.26
+
R168
R258
R51
C142
47k
47k
1M
0.01
C87
0.01
R174
+
R256
C102
3.3k
100k
10
PA7
PA5
PA4
PA6
IC17 TA7
5.16
R27
L9
1k
10 H
O
C35
+
+
C36
0.1
10
C129
C149
0.001
10
L10
10 H
R24
4.7k
IC23 TA78
5.13
C29
O
R23
2.2k
0.1
+
C155
C156
C28
10
0.1
0.1
R292
3.3
C193
D14
220p
MA8047 M
—14.7
R108
L13
10 H
5.6k
+
C53
C52
10
0.1
5.22
R290
C55
1.5k
R164
10
R265
150
220k
R110
150
R266
R109
220k
10k
C146
0.01
IC20
TC7S08FU
1
5
R270
2
1k
3
4
C145
3p
: Other
: [EUR, ITA]
R59
560 : Other
24
470 : [EUR], [ITA]
VCC
23
VCXO OUT
22
VCXO MON
21
VCXO IN
20
COLOR
19
TINT
18
KILLER FIL
17
R283
APC FIL
16
8.2k : O
S.W.
15
3.9k : [E
KILLER OUT
14
PIX CONT
13
GND
R169
68k
C58
0.1
C132
C131
R58
C141
0.01
0.01
15k
1
C130
R170
0.01
39k
G
G
X1
CR-6
CR-6
C154
180p : O
100p :

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