Icom IC-7800

11 - 27
11-28 CTRL BOARD
VOLTAGE LINE
Explanatory notes
TX LINE
RX LINE
COMMON LINE
10µ
L102
0.0047 C109
10
R68
10kR18
330R29
10 C1
56k R21
100µ
L51
2.2k R172
470
C39
0.1
C38
4.7R85
M38022M2
IC1
1
P62/AN2
2
P61/AN1
3
P60/AN0
4
P57/INT3
5
P56/PWM
6
P55/CNTR1
7
P54/CNTR0
8
P53/SRDY2
9
P52/SCLK2
10
P51/SOUT2
11
P50/SIN2
12
P47/SRDY1
13
P46/SCLK1
14
P45/TXD
15
P44/RXD
16
P43/INT2
17
P42/INT1
18
CNV66
19
RESET
20
P41/INT0
21
P40/INT4
22
XIN
23
XOUT
24
VSS
25
P27/DB7
26
P26/DB6
27
P25/DB5
28
P24/DB4
29
P23/DB3
30
P22/DB2
31
P21/DB1
32
P20/DB0
33
P17/AD15
34
P16/AD14
35
P15/AD13
36
P14/AD12
37
P13/AD11
38
P12/AD10
39
P11/AD9
40
P10/AD8
41
P07/AD7
42
P06/AD6
43
P05/AD5
44
P04/AD4
45
P03/AD3
46
P02/AD2
47
P01/AD1
48
P00/AD0
49
P37/RD
50
P36/WR
51
P35/SYNC
52
P34
53
P33/RESETOUT
54
P32/ONW
55
P31/DA2
56
P30/DA1
57
VCC
58
VREF
59
AV88
60
P67/AN7
61
P66/AN6
62
P65/AN5
63
P64/AN4
64
P63/AN3
RD5.6M D7
0.0047 C165
10kR17
2p
C103
EXCCL3225U
L7
10k
R205
NJM2903M
IC301
V+
8
GND
4
0.001
C108
100µ
L2
68k
R108
HSM88AS
D201
1k
R58
R204 56
220k R110
0.01 C5
1k
R15
100kR9
CP1
4.7R71
10k
R104
ERJ3GE-JPW
R119
1k
R53
1.2k
R22
0.001 C305
100kR14
0.1
C88
220k
R305
0.0047 C11
HSM88AS
D151
100k
R5
330R25
47
R161
18R154
330R32
5.6kR214
TC7S08F
IC6
1
2
3
4
5
1k
R62
20pC9
0.0047 C308
1SS319
D103
1
2
3
4
HN58X2416TI
IC2
1
A0
2
A1
3
A2
4
VSS
5
SDA
6
SCL
7
WP
8
VCC
L9
1k R166
HSM88AS
D101
100 R16
100k
R2
3p
C151
10k
R103
330R26
0.001 C107
0.1
C71
100µ
L5
NJM2903M
IC301
6
5
7
47
R255
1k
R65
4.7
R78
DTC114EU
Q5
10k R208
1k
R54
56
R253
0.0047 C252
1k
R113
10k R312
MA114 D2
10R102
0.1C40
10k
R228
0.01
C4
1k
R52
CR-569
X1
100k
R215
LR-502
L101
82kR221
RD5.1M
D1
220kR309
DTC114EU
Q2
75p
C116
4.7R74
1 C18
4.7R70
100k R11
0.0047
C208
4.7k R209
1 C19
L202 2.2M
0.0047
C175
220k R109
EXCCL3225U
L8
75p
C106
1.5M
R224
82p
C155
HSM88AS
D153
CP101
2SK515
Q201
47
R160
L9
HF50ACC322513
DTC114EU
Q10
DTC114EU
Q6
0.1C70
1p
C301
2.7MR111
1k
R51
1kR12
1k
R61
220p
C164
1k
R56
DTC114EU
Q51
NJM4558M
IC101
V+
8
GND
4
AE5349
RL251
10k R206
0.0047 C114
47
R165
1k
R40
100k
R4
DTC114EU
Q9
10kR301
0.1 C15
1k
R59
0.1
C10
1 C24
0.1
C181
15 R303
82pC153
56
R256
0.0047 C113
0.1 C14
1 C22
J351
1k
R162
100k R19
330R28
1k
R55
DTC114EU
Q7
10k
R227
DTC114EU
Q3
0.001C304
15R152
330R27
220pC214
TA7805F
IC4
1
I
2
O
3
G
100k R8
0.0047 C254
10R101
HSM88AS
D152
47
R168
HSM88AS
D102
22pC303
DTC114EU
Q4
100kR222
10k
R225
1k
R60
33pC152
0.0047
C211
47
R170
0.0047 C110
10µ
L152
10k
R304
TC4S69F
IC3
1
2
3
4
5
NJM2903M
IC301
2
3
1
1k
R64
0.1
C25
R202 56
DTA114EU
Q1
0.0047
C6
1k
R114
0.0047
C212
2.2k
R211
HSM88AS
D301
0.1 C309
20pC12
10
R69
470p C217
68k R307
12k
R20
0.0047
C156
1k
R63
1.5M
R223
1p
C202
0.0047 C26
0.0047C161
R201 56
100µ
L103
100kR13
10C112
1k
R57
15pC302
220k
R105
1M R207
10k R302
5.6kR213
100µ
L52
100k
R3
1k
R311
4.7R72
220p C215
10k
R23
1SS301 D251
2.2M
R308
4.7R73
220p
C163
330R31
6.8kR216
0.001 C209
56
R252
DTC114EU
Q251
1 C23
4.7R77
HSM88AS
D202
100 C16
47
R164
0.0047 C255
6.8kR217
100µ
L302
HSM88AS
D302
4.7k
R66
4.7R75
10
R67
DTC114EU
Q8
1 C21
56
R254
0.0047 C253
22R151
4.7R84
1k R169
470p C216
220 R174
10 C111
470 C13
100k
R218
1SS319
D203
1 2
3 4
0.0047 C157
0.1
C69
DTC114EU
Q52
BU4066BCF
IC52
1
I/O1
2
O/I1
3
O/I2
4
I/O2
5
CONT2
6
CONT3
7
VSS
8
I/O3
9
O/I3
10
O/I4
11
I/O4
12
CONT4
13
CONT1
14
VDD
0.0047 C307
2.2M
R310
1 C17
68k R107
EXCCL3225U
L6
R203 56
DTC114EU
Q53
330R30
10k
R6
0.1
C8
1k
R24
100µ
L1
0.0047 C207
0.0047 C159
10k
R226
0.0047 C210
220k
R106
100kR10
3.3k
R173
22R153
7p C201
47C162
1k R163
1 C20
EP1
W1
1k R167
47
R171
10k
R212
1k
R210
10C72
0.001C7
0.1
C180
0.1 C2
HSM88AS
D154
2pC102
4.7R76
68k R306
FTR-F1
RL252
FTR-F1
RL253
NJM4558M
IC101
2
3
1
NJM4558M
IC101
6
5
7
J2
J51
to NETWORK
board J1
J1
0.0047 C3
0.0047 C218
0.0047 C213
NJM4558M
IC201
V+
8
GND
4
EXC-ELDR25C
L4
1SS319 D3
1 2
3 4
1SS319 D4
1 2
3 4
1SS319 D5
1 2
3 4
1SS319 D6
1 2
3 4
0.0047C420
0.0047
C419
HF50ACC322513
L402
HF50ACC322513 L401
10C418
10C417
1kR424
1kR430
1kR422 1kR432
1kR420
1kR428
1kR418
1kR426
4.7
R416
4.7
R415
4.7
R410
4.7
R412
4.7
R409
4.7
R414
4.7
R413
4.7
R411
4.7
R402
4.7
R404
4.7
R403
4.7
R407
4.7
R406
4.7
R405
4.7
R408
4.7
R401
1k
R425
1k
R431
1k
R417
1k
R419
1k
R421
1k
R429
1k
R427
1k
R423
TC74HCT7007AF
IC5
1 2 3 4 5 6 78
9 10 11 12 13 14
27pC158
33p C154
150p C205
3p C206
100p C204
NJM4558M
IC201
2
3
1
NJM4558M
IC201
6
5
7
2SK3018
Q54
10k
R86
DTC114EU
Q55
CD74HC4094M
IC51
1
STROBE
2
DATA
3
CP
4
Q0
5
Q1
6
Q2
7
Q3
8
GND
9
QS1
10
QS2
11
Q7
12
Q6
13
Q5
14
Q4
15
OE
16
VCC
CD74HC4094M
IC55
1
STROBE
2
DATA
3
CP
4
Q0
5
Q1
6
Q2
7
Q3
8
GND
9
QS1
10
QS2
11
Q7
12
Q6
13
Q5
14
Q4
15
OE
16
VCC
0.1
C68
10 C66
CD74HC4094M
IC56
1
STROBE
2
DATA
3
CP
4
Q0
5
Q1
6
Q2
7
Q3
8
GND
9
QS1
10
QS2
11
Q7
12
Q6
13
Q5
14
Q4
15
OE
16
VCC
1.2M
R112
75pC105
56pC115
TD62783AF
IC402
1
I1
2
I2
3
I3
4
I4
5
I5
6
I6
7
I7
8
I8
9
VCC
10
GND
11
O8
12
O7
13
O6
14
O5
15
O4
16
O3
17
O2
18
O1
TD62783AF
IC401
1
I1
2
I2
3
I3
4
I4
5
I5
6
I6
7
I7
8
I8
9
VCC
10
GND
11
O8
12
O7
13
O6
14
O5
15
O4
16
O3
17
O2
18
O1
TD62783AF
IC57
1
I1
2
I2
3
I3
4
I4
5
I5
6
I6
7
I7
8
I8
9
VCC
10
GND
11
O8
12
O7
13
O6
14
O5
15
O4
16
O3
17
O2
18
O1
TD62783AF
IC58
1
I1
2
I2
3
I3
4
I4
5
I5
6
I6
7
I7
8
I8
9
VCC
10
GND
11
O8
12
O7
13
O6
14
O5
15
O4
16
O3
17
O2
18
O1
56p
C119
TC74AC04F
IC151
1
2
3
4
5
6
7
9
8
10
11
12
13
14
0.0047C171
100
R155
100
R157
10kR158
10k
R159
TC7SZ32F
IC153
1
2
3
4
5
TC7SZ32F
IC154
1
2
3
4
5
TC7SZ32F
IC155
1
2
3
4
5
TC74ACT112F
IC156
13
CK
12
K
11
J
10
PR
9
Q
7
Q
14
CLK
TC74ACT112F
IC156
1
CK
2
K
3
J
4
PR
5
Q
6
Q
15
CLK
TC74ACT112F
IC156
V+
16
GND
8
J52
J53
DTC114EU
Q11
1k
R7
J101
from FILTER
unit J904
J301
J251
J252
20p
C104
0
R46
0
R45
0
R44
0
R43
0
R42
0
R87
0
R88
0
R89
0
R90
0
R91
0
R92
0
R97
0
R95
CI2
NVHF
CI1
VHF
CO2
CI2
AN0
24M
CI3
150k R313
VHF
NVHF
24M
CO1
18M
DTC114EU
Q59
18M
0.1 C41
TRC
TRC
TRC
TRC
AN1
AN0
AN1
14M 10M
AN2
14M
7M
AN3
10M
4M
AN3
AN2
7M
2.7MR115
3pC310
CO3
0.0047 C43
AN1
CO2
AN0
AN2
CO1
CI3
CI1
CO3
0.0047
C173
0.0047
C174
LPF5LPF5
PX
PX PX
PY
PY PY
VHF
4.6MOL
4.6MOL
CI3
TDAT
TCK
LPF4
LPF4
GND
GND
REF
CO1
AW
AW AW
+15V
GND
T15V
GND
ISTA
+5V
+5V +5V
+5V
+5V
+5V
+5V
+5V +5V
+5V
+5V +5V
+5V
10M
THRU
THRU
CI2
+15VL+15VL+15VL+15VL
+15VL +15VL +15VL
+15VL+15VL
+15VL
+15VL
CI1
AY
AY AY
AN3
PWPW PW
LPF9
LPF9
LPF6
LPF6
THRI
5M
RX-ANTB
+3R3VL
GND
AN2
THRU THRU
THRU THRU
TDAT
IKEY
+3R3V
TCK
24M
+5V
+5V
+5V
+5V
+5V
ANT4R
ANT4R
ANT4R
+5V
LPF1
LPF1
LPF1
THRU2
THRU2
THRU1
+15V+15V
14M
+15V
PZ
PZ PZ
TCK
+5V
+5V +5V
+5V +5V
+5V
LPF3
LPF3
+15V
+3R3VL
+15VL
THRU1
THRU1
CO2
IKEYB IKEYB IKEYB
IKEYB
FSTB
TUIN
TX/RX-A
- 12V
GND
LPF7
LPF7
LPF7
CSTB
TCK
TDAT
CSTB
18M
3R5M
FOR
REF
FOR
T8V
TDRS
THRU2
CO3
T15V
T15VT15V
T15V
LPF2
LPF2
AZ
AZ
GND
TUOT
GND
+5VL+5VL
GND
+15V
T8V T8V
T8V
GNDL
REFV
FANC
LPF8
LPF8
TDAT
CSTB
AX
AX AX
TRC TRC TRC
TRC
7M
FORV
+3R3V
- 12V
T8V
REFV
FORV
- 12VL
+3R3VL
- 12VL
- 12VL
+15VL +15VL +15VL
CTIN
GND
- 12VL2
-
12VL2
- 12VL2 - 15VL2
- 12VL2
VHCI
VHCO
VHF
CI3
CO1
+15V
10M
CI2
CI1
5M
24M
14M
CO2
18M
3R5M
CO3
FANC
7M
VHF
10M
5M
24M
14M
18M
3R5M
7M
VHCI
VHCO
FSTB
GND
TOE
TDAT
TCK
CSTB
FSTB
TOE
IKEYB
TDAT
TCK
CSTB
FSTB
TOE
TOE
TOE
TDAT
TCK
CSTB
TOE
REF
+3R3VL+3R3VL
+3R3VL
FOR
FORFOR
4.6MOL
FOR
FOR
FOR
- 12VL
-
12VL
FOR FOR
FORFORFOR
FOR
-
12VL
- 12VL
TOE
TOE
24M
2M
3R5M
GND
14M
18M
50M
OE
OE
OE
CK
CK
CK
THRU2
THRU1
THRU2
THRU1
THRU2
THRU1
THRU2
THRU1
THRU2
THRU1
THRU2
THRU1
OE
CK
OE
OE
CK
CK
CK
+15V
+15V
+15V
+15V+15V
+15V +15V
+15V
STB
STBSTB
STB
7M
DATA
DATA
DATA
DATA
10M
ANT4R
ANT4R
5M
GND
GND
to BPF
unit J106
from/to NETWORK
board J2
from/to NETWORK
board J3
from/to ANT-SW
unit J1
to TUNER
unit MF1,MF2
to LOGIC
unit J811
to FILTER
unit J902
to FILTER
unit J905
LR-502
L151
LR-502
L201
LR-502
L301
ERJ3GE-JPW
R118
10k
R345
CTRL BOARD
15.0V
4.5V
163nsec
5.0V
- 11.8V
at selected: 12.7V
at selected: 12.7V
at selected: 13.4V
2.5V
at selected: 13.4V
3.3V
14.5V
TX: 4.9V
RX: 0.0V
TX: 8.1V
RX: 0.0V
15.0V
range: input impedance
200mV: 100MΩ
2V: 11MΩ
20V,200V,1000V: 10MΩ
MESUREMENT CONDITIONS
voltage at RX(no instruction)
frequency: 14.1 MHz
mode: J3E(USB)
Digital tester
ANT(RX): no input
(TX): no modulation