![background image](http://html.mh-extra.com/html/icom/ic-7800/ic-7800_service-manual_612345145.webp)
1
20
10
11
1
10
20
11
5V
GND
SSA
SSB
4
to the SUB SENSOR
1
J6
GND
RSA
5V
RSB
4
to the RIT SENSOR
1
J7
KI1
SAUD
3R3V
MLCK
SP1B
GND
MPCD
SAPL
PITL
KI2
SP2A
SNCL
SP2B
MAPD
MAUD
MNCD
SP1A
SAPD
KI0
SPCD
LDPS
MTSK
SNCD
MSPK
SATK
SLCK
SSPK
KI3
NC
STSK
29
1
2
30
to the SW-C board J1
J3
3R3V
MP1A
GND
GND
MP2A
MP1B
MP2B
MAPL
GND
MNCL
1
9
10
2
to the PBT1 board J1
J4
LDPS
SRXD
STXD
MTXD
GND
SPLD
NC
SLCD
MRXD
MLCD
10
2
1
9
to the LED board J1
J5
3R3V
SUBK
GND
LDPS
KI6
SSA
KI5
LDAT
EQRK
NC
GND
CHGK
MWK
MINK
LST1
KI4
NC
SSB
MPRK
LOE
UPK
VMK
NC
LCK
RSA
DWK
XFCK
MPWK
RSB
NC
2
30
29
1
to the DISPLAY board J1
J1
SP1B
KI2
5V
KI3
MAPL
SP1A
KI1
MP1B
SAPL
SNCL
SLCK
SP2B
MSPK
MP1A
MTSK
NC
NC
PITL
MP2B
SATK
SSPK
SP2A
NC
MP2A
KI0
MLCK
NC
STSK
MNCL
NC
2
30
29
1
to the DISPLAY board J2
J2
5
10
15
20
25
30
35
40
45
50
55
60
0
Horizontal
5
10
15
0
25
30
35
20
45
50
55
40
65
70
75
60
80
V
er
tical
• BOTTOM VIEW (TENKEY BOARD)
8 - 8
5
10
15
20
25
30
35
40
0
Horizontal
5
10
15
0
20
V
er
tical
• BOTTOM VIEW (PBT1 BOARD)
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
0
Horizontal
5
10
15
0
20
V
er
tical
• BOTTOM VIEW (PBT2 BOARD)
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
140
145
150
0
Horizontal
5
10
15
0
V
er
tical
• BOTTOM VIEW (LED BOARD)