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IC-7800
Service manual addendum
Digisel Unit - Icom IC-7800 Service Manual Addendum
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:
Instruction manual
(230 pages)
,
Service manual
(216 pages)
,
Manual
(27 pages)
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Contents
Table of Contents
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11-22 DIGISEL UNIT
DIGISEL UNIT (A)
RF OUT
C35
RL2
0.0047
FTR-B4CA012Z
+15V
C137
120p
C128
0.5p
C138
100p
RL67
RL58
FTR-B4CA012Z
FTR-B4CA012Z
+15V
C139
180p
C67
CP10A
0.0047
C129
1p
C140
180p
RL69
RL59
FTR-B4CA012Z
FTR-B4CA012Z
+15V
L101
C68
CP11A
LR-476
0.0047
C130
2p
C141
56p
RL60
FTR-B4CA012Z
RL70
FTR-B4CA012Z
+15V
C69
LP1A
L102
LR-477
0.0047
C131
4p
C142
56p
RL61
FTR-B4CA012Z
+15V
RL71
FTR-B4CA012Z
L103
C70
LP2A
LR-478
0.0047
C132
8p
C143
47p
RL62
FTR-B4CA012Z
RL72
+15V
FTR-B4CA012Z
L104
C71
LP3A
LR-479
0.0047
C133
18p
R104
10k
RL63
FTR-B4CA012Z
RL73
+15V
FTR-B4CA012Z
C72
L105
LP4A
LR-480
0.0047
C134
36p
R105
10k
RL64
FTR-B4CA012Z
RL74
+15V
FTR-B4CA012Z
C73
LP5A
L106
LR-481
0.0047
C135
68p
RL65
FTR-B4CA012Z
RL75
+15V
FTR-B4CA012Z
C74
LP6A
L107
0.0047
LA-595
C136
120p
RL66
FTR-B4CA012Z
RL76
FTR-B4CA012Z
+15V
C75
LP7A
0.0047
RF OUT
+15V
+15V
C58
CP1A
0.0047
+15V
+15V
C59
CP2A
0.0047
RL54
FTR-B4CA012Z
CS1A
+15V
C60
CP3A
0.0047
+15V
RL55
FTR-B4CA012Z
+15V
CS2A
C61
CP4A
0.0047
+15V
+15V
RL56
FTR-B4CA012Z
CS3A
C62
CP5A
0.0047
+15V
+15V
C63
CP6A
RL57
0.0047
FTR-B4CA012Z
CS4A
R204
220
DSAPA
+15V
15.0V
R208
C206
C64
CP7A
33
0.1
0.0047
R209
22
+15V
C65
CP8A
0.0047
L203
LR-493
+15V
+15V
+15V
C66
CP9A
0.0047
RF OUT
C110
2p
C111
2.5p
C101
C113
9p
470p
C114
18p
C102
270p
C115
18p
RL51
C103
FTR-B4CA012Z
C116
18p
270p
C117
33p
C104
100p
RL52
FTR-B4CA012Z
47p
C118
C106
C119
18p
150p
C120
18p
C107
150p
18p
C121
C108
150p
C122
9p
C109
C124
2p
150p
RL53
C125 2.5p
FTR-B4CA012Z
RL201
FTR-B4CA012Z
D205
1SS355
C215
0.0047
Q201
D201
R205
2SC5551
XB15A204
C201
R202
180
180
0.1
R203
47
D203
C208
10p
7.18V
1SS355
D202
R206
XB15A204
270
D204
1SS355
6.45V
+15V
+15V
RF OUT
RF OUT
R9
DSONA
R100
220
0
C21
0.0047
+3R3V
+3R3V
IC1
C1
0.1
CAT24WC256K1.8
1
8
A0
VCC
7
2
A1
WP
3
6
NC
SCL
4
5
VSS
SDA
R2
10k
+15V
R3
10k
+3R3V
+3R3V
C4
0.1
CPX1A
IC4
BU2099FV
20
1
VDD
VSS
19
2
OE
NC
18
3
SO
DATA
C6A
17
4
Q11
CLOCK
C5A
16
5
Q10
LCK
C4A
15
6
X1A
Q9
Q0
C3A
14
7
X2A
Q8
Q1
C2A
13
8
S1A
Q7
Q2
C1A
12
9
S2A
Q6
Q3
+15V
S3A
S4A
11
10
Q5
Q4
C5
0.1
LP7A
IC5
BU2099FV
20
1
VDD
VSS
19
2
OE
NC
18
3
SO
DATA
17
L7A
4
Q11
CLOCK
L6A
16
5
Q10
LCK
L5A
15
6
C7A
Q9
Q0
L4A
14
7
C8A
Q8
Q1
13
C9A
L3A
8
Q7
Q2
+15V
L2A
12
9
C10A
Q6
Q3
L1A
11
10
C11A
Q5
Q4
CPX2A
NETWORK ON: 14.97V
OFF: 3.20V
CPX1A
R35
220
220
CPX2A
R36
CS1A
R37
220
CS2A
R38
220
CS3A
R39
220
220
CS4A
R40
220
LP3A
CP1A
R41
CP2A
R42
220
LP2A
CP3A
R43
220
220
CP4A
R44
LP1A
CP5A
R45
220
CP6A
R46
220
CP7A
R47
220
CP8A
R48
220
CP9A
R49
220
CP10A
R50
220
CP11A
220
R51
220
LP1A
R52
LP2A
R53
220
LP3A
R54
220
LP4A
220
R55
LP5A
R56
220
LP6A
R57
220
LP7A
R58
220
+15V
+15V
DSAPA
11 - 21
CP2
J1
RF OUT
to RXPLL-A
unit J1002
CP1
Explanatory notes
VOLTAGE LINE
RX LINE
CP4
J2
RF IN-A
from BPF
unit J101
CP3
RL21
FTR-B4CA012Z
14.5V
L3
100µ
J10
GND
NC
+3R3V
L1
100µ
3R3V
R59
1k
DRES
R7
1k
DSCLA
R8
1k
DSDAA
R4
1k
DDAT
R5
1k
DCK
R6
1k
DSTBA
X1A
DSONA
to LOGIC
X2A
DSAPA
unit J813
S1A
DSCLB
DSCLB
S2A
DSDAB
DSDAB
S3A
DSTBB
DSTBB
DSONB
DSONB
DSAPB
DSAPB
+15V
+15V
+15V
C2
NC
0.1
GND
OE
OE
+15V
+15V
+3R3V
+3R3V
+3R3V
DCK
DCK
C7A
DDAT
DDAT
C8A
DSCLB
DSCLB
C9A
DSDAB
DSDAB
C10A
DSTBB
DSTBB
C11A
DSONB
DSONB
DSAPB
DSAPB
DIGISEL
UNIT (B)
L4
100µ
X1A
X2A
S1A
S2A
S3A
S4A
C1A
C2A
C3A
C4A
C5A
C6A
C7A
C8A
C9A
C10A
C11A
L1A
MESUREMENT CONDITIONS
L2A
voltage at RX
frequency: 14.1 MHz
L3A
mode: J3E(USB)
L4A
ANT(RX): no input
L5A
Digital tester
L6A
range: input impedance
L7A
200mV: 100MΩ
2V: 11MΩ
20V,200V,1000V: 10MΩ
+15V
Table of
Contents
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