![background image](http://html.mh-extra.com/html/icom/ic-2800/ic-2800_service-manual_612060043.webp)
C36
10
+
L9
10 H
C55
10
+
L16
10 H
F
+
—
1
3
5
2
26
60p
27
.1
R17
68k
C30
39p
R25
27k
R26
50k
R27
1k
C35
0.1
R20
68k
R21
22k
R22
47k
R24
4.7k
R23
2.2k
C28
0.1
C29
0.1
L10
10 H
R106
560
R100
150k
R107
680
R109
10k
L13
10 H
C52
0.1
C53
10
+
R290
1.5k
R110
150
R164
150
CP1
R292
3.3
3 L
C193
220p
C194
220p
C54
4.7
Q11
2SC4081 R
D14
MA8047 M
R108
5.6k
+
IC16
M52042FP
: Other
M52045FP
: [EUR, ITA]
1
2
3
SYNC OUT
4
HD
5
6
7
8
CONT
9
10
11
12
GND
13
14
15
S.W.
16
17
18
TINT
19
COLOR
20
21
22
23
VCC
24
C87
0.01
R168
47k
R167
56k
R169
68k
C130
0.01
R170
39k
C58
0.1
R58
15k
R59
560 : Other
470 : [EUR], [ITA]
C59
470p
C141
1
C131
0.01
R51
1M
C44
4.7
+
C45
0.01 : Other
0.068 : [EUR],
[ITA]
C132
0.01
PA4
R174
3.3k
C102
10
+
R283
8.2k : Other
3.9k : [EUR], [ITA]
C154
180p : Other
100p : [EUR], [ITA]
X1
CR-640 : Other
CR-641: [EUR], [ITA]
C153
18p : Other
12p :[EUR], [ITA]
ACC FIL
SYNC IN
V IN
PED CAP
C TRAP
Y OUT
R OUT
G OUT
B OUT
KILLER FIL
VCXO OUT
VCXO MON
VCXO IN
APC FIL
KILLER OUT
PIX CONT
D0
D1
D2
D3
D4
D5
D6
D7
LRES
CS
WR
RD
PB7
PA7
A0
PA6
A1
PA5
A2
PA4
A3
PA3
A4
PA2
A5
PA1
A6
PA0
A7
A8
A9
P80
A10
A11
A12
P77
A13
A14
P75
A15
P74
A16
P73
A17
P72
P71
P70
A18
WAIT
R131 1k
R127 1k
R128 470
R130 1k
R129 10k
R132 1k
R133 1k
R136 1k
R179
47k
R180
220k
R181
220k
R182
220k
R183
220k
R184
220k
R185
220k
R186
220k
R187
220k
R196
220k
R197
220k
R198
220k
R199
220k
R200
220k
R201
220k
R202
220k
R203
220k
R204
220k
R205
220k
IC11 S-80945ANMP-DD9
OUT
1
VDD
2
VSS
3
NC
4
CD
5
C143
12p
C105
0.01
R262
220k
R263
47k
R266
220k
R265
220k
R264
100k
R135 1k
R137 1k
R270
1k
C145
3p
C146
0.01
C147
0.01
X2
CR-566
C144
12p
C120
0.01
C119
0.01
JP3
IC21 TC74AC244F
ENA
1
A1
2
YB4
3
A2
4
YB3
5
A3
6
YB2
7
A4
8
YB1
9
VSS
10
VDD
20
ENB
19
YA1
18
B4
17
YA2
16
B3
15
YA3
14
B2
13
YA4
12
B1
11
IC20
TC7S08FU
1
2
3
4
5
IC10
HD6433032SK21F
PB0/TP8/TIOCA3
1
PA7/TP7/TIOCB2
80
P37/D7
20
VCC
21
P51/A17
40
P52/A18
41
P71/AN1
60
P72/AN2
61
PB1/TP9/TIOCB3
2
PB2/TP10/TIOCA4
3
PB3/TP1
1/TIOCB4
4
PB4/TP12/T
OCXA4
5
PB5/TP13/T
OCX B4
6
PB6/TP14
7
PB7/TP15/ADTRG
8
P90/TXD
9
P92/RXD
10
P94/SCK/IRQ4
11
VSS
12
P30/D0
13
P31/D1
14
P32/D2
15
P33/D3
16
P34/D4
17
P35/D5
18
P36/D6
19
P10/A0
22
P11/A1
23
P12/A2
24
P13/A3
25
P14/A4
26
P15/A5
27
P16/A6
28
P17/A7
29
VSS
30
P20/A8
31
P21/A9
32
P22/A10
33
P23/A11
34
P24/A12
35
P25/A13
36
P26/A14
37
P27/A15
38
P50/A16
39
P53/A19
42
P60/W
AIT
43
MD0
44
MD1
45
FAI
46
STBY
47
RES
48
NMI
49
VSS
50
EX T
A
L
51
52
VCC
53
P63/AS
54
P64/RD
55
P65/WR
56
RESO
57
A
VSS
58
P70/AN0
59
P73/AN3
62
P74/AN4
63
P75/AN5
64
P76/AN6
65
P77/AN7
66
VREF
67
AVCC
68
P80/IRQ0
69
P81/IRQ1
70
P82/IRQ2
71
P83/IRQ3
72
PA0/TP0/TCLKA
73
PA1/TP1/TCLKB
74
PA2/TP2/TIOCA0
75
PA3/TP3/TIOCB0
76
PA4/TP4/TIOCA1
77
PA5/TP5/TIOCB1
78
PA6/TP6/TIOCA2
79
R140 1k
R141 1k
R142 1k
R143 1k
R175 1k
R176 1k
R268 47k
R269 47k
R267
220k
R299
1k
R300
1.5k
R134
1k
R177 47k
R272
10k
XT
AL
R188 220k
R189 220k
R190 220k
R191 220k
R192 220k
R193 220k
R194 220k
R195 220k
HV
TDATA
RDATA
GND
SP
SPE
SP
SPE
IC14 TA78L05F
G
I
O
C114
10
+
R163
10k
C117
47p
C118
47p
J2
1
2
3
4
5
6
Q18
2SB1132 R
W13
R293
4.7
C113
0.001
J5
1
2
C112
0.001
R158
10k
Q12
2SC4081 R
R159
4.7k
R160
4.7k
C169
220p
C115
10
+
C164
220p
C165
220p
C168
220p
C166
220p
C160
0.1
C116
0.001
TO
MAIN UNIT
J3
1
2
SP1
VS-57-0814
C167
220p
UDIAL
ENCODER
UVOL
USQL
VVOL
VSQL
POWER
F-1
F-2
F-3
F-4
F-5
F-6
F-7
F-8
CHANGE
PA2
P73
P72
PA3
P74
P75
P80
P77
P71
P70
PA0
PA1
R152
47k
R155
47k
C109
0.0047
C110
47p
R113
2.2k
R114
4.7k
R115
15k
R117
2.2k
C98
0.0047
R126
47k
R124
47k
R125
47k
W8
R120
6.8k
R116
6.8k
S12
A
1
B
2
NC
3
COM
4
S11
A
1
B
2
NC
3
COM 4
R145
10k
R148
10k
R151
10k
R154
10k
R157
100k
R162
4.7k
R161
15k
R298
10k
Q13
2SA1576 R
C108
0.0047
R122
47k
C111
47p
C97
0.0047
R146
47k
R149
47k
C95
47p
C174
220p
R119
15k
R118
4.7k
R121
47k
C94
47p
C96
0.0047
C175
220p
R123
47k
C172
220p
C197
220p
C99
0.0047
C195
220p
C173
220p
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
EXT V
E
CFL+
CFL—
NC
NC
J3
1
2
3
4
J4
VIDEO
IN
1
2
3
4
CFL
DS2 HMBS 3 A1W 83N/AZ Assy
S11
EVQ-VENF01
VDIAL
ENCODER
S12
EVQ-VENF01
C123
33
+
IC17 TA78L05F
G
I
O
R165
8.2k
C122
33P
C155
10
+
C121
0.033
L18
SLF6028T-101MR42
C129
0.001
IC23 TA78L05F
C156
0.1
C127
0.001
C149
10
+
R294
2.7k
Q20
2SA1362 GR
L19
678XN-1369
C192
220p
Q14
2SC3647 S
Q15
2SC3647 S
Q19
DTC144EU
G
I
O
R295
4.7k
IC3 M5291FP
CS
1
ES
2
CT
3
GND
4
INVIN
5
V+
6
SI
7
CD
8
C125
47
+
IC15
TA79L15F
G
I
O
C126
0.001
L11
SLF7032T-681MR16-2
D3
SB10-05PCP
C38
47
+
R30
470k
R29
33k
C39
8.2
+
Q16
2SA1362 GR
R282
2.7k
R281 4.7k
C124
0.001
R296
2.2k
R297
680
Q17
DTC144EU
Q21
2SB798 DK
C201
2.2
C37
0.001
R302
8.2
R28
1
R301
8.2
5.11
12.94
5.22
6.56
12.46
12.34
—15.8
—16.9
—16.0
13.01
12.08
0.6
12.5
12.6
12.6
—0.36
—0.36
13.06
12.39
5.2
5.13
5.16
—14.7
5.22
1.72
1.71
4.88
3.26
2.62
5.22
5.21
0.15
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