![background image](http://html.mh-extra.com/html/icom/ic-7800/ic-7800_service-manual_612345138.webp)
1
8
14
9
1
11
22
12
1
25
26
50
100
76
75
51
1
8
16
9
1
8
16
9
1
8
16
9
1
8
16
9
20
11
1
10
MP301
29
1
to the TENKEY board J1
30
2
J1
KI6
KI4
GND
SSB
RSB
UPK
VMK
MWK
XFCK
EQRK
CHGK
LDAT
LOE
NC
LDPS
3R3V
KI5
GND
SSA
RSA
NC
DWK
MPWK
MPRK
MINK
SUBK
NC
LCK
LST1
NC
1
to the TENKEY board J2
2
29
30
J2
NC
MNCL
NC
MP2A
MP1A
SP1A
SP2A
SNCL
PITL
SLCK
SSPK
STSK
KI0
KI2
NC
5V
MAPL
NC
MP2B
MP1B
NC
SP1B
SP2B
SAPL
SATK
MLCK
MSPK
MTSK
KI1
KI3
1
to the LCD
2
39
40
J201
LCLK
R0
R2
R3
R5
G0
G2
G3
G5
B0
B2
B3
B5
HS
DE
GND
BRIGHT
GND
LVDD3
LVDD1
GND
GND
R1
GND
R4
GND
G1
GND
G4
GND
B1
GND
B4
GND
VS
UD/RL
CONT
GND
LVDD4
LVDD2
40
to the LOGIC unit J806
39
2
1
J202
LCLK
R0
R2
R3
R5
G0
G2
G3
G5
B0
B2
B3
B5
HS
DE
GND
NC
GND
LVDD3
LVDD1
GND
GND
R1
GND
R4
GND
G1
GND
G4
GND
B1
GND
B4
GND
VS
UD/RL
NC
GND
LVDD4
LVDD2
2
1
40
to the SW-A board J3
29
J3
GND
MSQL
PWRL
SSQL
DELL
KI11
KI9
KI7
NC
NC
MOND
TRAK
SNRD
MNBD
MAGD
TN2D
VOXD
STBD
NC
GND
GND
3R3V
MAGL
MIGL
SAGL
KYSL
KI10
KI8
NC
NC
NC
PWRK
SNBD
SAGD
MNRD
TMD
TN1D
PWRD
LDPS
GND
2
1
30
to the VR-A board J1
29
J6
MSND
NC
2
1
to the LCD
J301
GND
CFLH
NC
NC
PHNI
DSHK
NC
NC
SAFL
MAFL
SNRL
MNRL
3R3V
GND
NC
M8V
NC
NC
NC
SQLS
NC
DOTK
MUDL
NC
SRFL
MRFL
SNBL
MNBL
NC
NC
20
to the LOGIC unit J805
19
2
1
J203
GND
LRXD
NC
NC
+3R3V
GND
C15V
NC
MSND
NC
GND
LTXD
LG_PWR
LG_RES
GND
C15V
C15V
8V
GND
VDD5VF
4
to the MAIN SENSOR
1
J205
GND
MSA
MSB
5V
1
to the SW-B board J1
2
17
18
J4
GND
P
LYK
EXTK
D
ATK
R
TYK
SSBK
F6K
F4K
F2K
M
ATK
RECK
MSCK
AMK
CWK
F7K
F5K
F3K
F1K
1
2
9
10
J7
DTXD
RESET
P2ST
DRXD
DBP1
CNVSS
GND
TDTS
SLOS
3R3V
1
to the VR-D board J1
2
9
10
J5
3R3V
CNTL
V
O
XL
CMPL
GND
BRIL
A
VXL
D
R
VL
MONL
GND
3
to the CF board J3
1
J302
GND
CFBD_
LOPS
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
0
Horizontal
5
10
15
0
25
30
35
20
45
50
55
40
65
70
75
60
80
90
95
85
V
er
tical
8-1 DISPLAY BOARD
• TOP VIEW
8 - 1
SECTION 8
BOARD LAYOUTS