Icom IC-7800 Service Manual Addendum page 324

Jul. 2008
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
C68 CP11A
L101
LR-476 0.0047
C130 2p
C141 56p
RL60
FTR-B4CA012Z
RL70
FTR-B4CA012Z +15V
C69
L102 LP1A
LR-477
0.0047
C131 4p
C142 56p
RL61
FTR-B4CA012Z
+15V
RL71
FTR-B4CA012Z
C70
L103 LP2A
LR-478 0.0047
C132 8p
C143 47p
RL62
FTR-B4CA012Z
RL72
+15V
FTR-B4CA012Z
C71 LP3A
L104
LR-479
0.0047
C133 18p
R104 10k
RL63
FTR-B4CA012Z
RL73 +15V
FTR-B4CA012Z
C72 LP4A
L105
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 C208
+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
CPX1A
C117 33p
+15V
C104
RL52
100p
FTR-B4CA012Z
C118 47p
LP7A
C106
C119 18p
150p
C120 18p
C107 150p
C121 18p
C108 150p
C122 9p
+15V
C109
C124 2p
150p
RL53
C125 2.5p
FTR-B4CA012Z
RL201
FTR-B4CA012Z CPX2A
D205 1SS355
C215 0.0047
Q201
D201
R205
2SC5551
XB15A204 180
C201 R202 180
LP3A
0.1 D203
R203 47
LP2A
10p
7.18V
D202 1SS355
R206
LP1A
XB15A204
270
D204
1SS355
6.45V
+15V
+15V
RF OUT RF OUT
Explanatory notes
R9
DSONA
R100 220
RL21
0
C21
FTR-B4CA012Z
0.0047
+3R3V +3R3V
IC1
C1 0.1
CAT24WC256K1.8
1 8
A0 VCC
2 7
A1 WP
3 6
NC SCL
4 5
VSS SDA
R2 10k
+15V
R3 10k
+3R3V +3R3V
C4 0.1
+3R3V L1
IC4 BU2099FV
R59
20 1 R7
VDD VSS
19 2 R8
OE NC
18 3 R4 1k
SO DATA
C6A 17 4 R5 1k
Q11 CLOCK
C5A 16 5 R6 1k
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
S4A 11 10 S3A
Q5 Q4
C5 0.1
IC5 BU2099FV
20 1
VDD VSS
19 2
OE NC
18 3
SO DATA
L7A 17 4 +3R3V
Q11 CLOCK
L6A 16 5
Q10 LCK
L5A 15 6 C7A
Q9 Q0
L4A 14 7 C8A
Q8 Q1
L3A 13 8 C9A
Q7 Q2
L2A 12 9 C10A
Q6 Q3
L1A 11 10 C11A
Q5 Q4
NETWORK ON: 14.97V
OFF: 3.20V
CPX1A R35 220
CPX2A 220
R36
CS1A 220
R37
CS2A R38 220
CS3A R39 220
CS4A R40 220
CP1A R41 220
CP2A R42 220
CP3A R43 220
CP4A R44 220
CP5A R45 220
CP6A 220
R46
CP7A
R47 220
CP8A
R48 220
CP9A 220
R49
CP10A 220
R50 C10A
CP11A 220
R51 C11A
LP1A 220
R52
LP2A 220
R53
LP3A 220
R54
LP4A 220
R55
LP5A 220
R56
LP6A 220
R57
LP7A 220
R58
+15V +15V
DSAPA
75
CP2
J1
RF OUT to RXPLL-A
unit J1002
CP1
VOLTAGE LINE
RX LINE
CP4
J2
from BPF
RF IN-A
unit J101
CP3
14.5V
L3
J10
GND
NC
3R3V
1k DRES
1k DSCLA
1k DSDAA
DDAT
DCK
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
DCK
DCK
C7A DDAT
DDAT
C8A DSCLB
DSCLB
C9A DSDAB
DSDAB
C10A DSTBB
DSTBB
C11A DSONB
DSONB
DSAPB
DSAPB
DIGISEL
UNIT (B)
L4
X1A
X2A
S1A
S2A
S3A
S4A
C1A
C2A
C3A
C4A
C5A
C6A
C7A
C8A
C9A
L1A MESUREMENT CONDITIONS
voltage at RX
L2A
frequency: 14.1 MHz
L3A
mode: J3E(USB)
L4A
ANT(RX): no input
L5A
Digital tester
L6A range: input impedance
L7A
+15V