Icom IC-7800 Service Manual Addendum page 478

SECTION 8 BOARD LAYOUTS
8-1 DISPLAY BOARD
• TOP VIEW
95
90
J1
3R3V 30
29 KI6
KI5
KI4
GND
GND
85
SSA
SSB
RSA
RSB
NC
UPK
DWK
VMK
MPWK
MWK
MPRK 80
XFCK
MINK
EQRK
SUBK
CHGK
NC
LDAT
LCK
LOE
LST1
75
NC
NC 2
1 LDPS
to the TENKEY board J1
70
65
J2
60
5V 30
29 NC
MAPL
MNCL
NC
NC
MP2B
MP2A
MP1B
55
MP1A
NC
SP1A
SP1B
SP2A
SP2B
SNCL
SAPL
PITL
SATK
SLCK 50
MLCK
SSPK
MSPK
STSK
MTSK
KI0
KI1
KI2
KI3 2
1 NC
45
to the TENKEY board J2
40
J201
40
GND
39 LCLK
GND
R0
R1
R2
GND
R3
35
R4
R5
GND
G0
G1
G2
GND
G3
G4
G5
30
GND
B0
B1
B2
GND
B3
B4
B5
GND
HS
VS 25
DE
UD/RL
GND
CONT
BRIGHT
GND
GND
LVDD4
LVDD3
LVDD2
2
20
1 LVDD1
to the LCD
J202
1 15
GND
2 LCLK
GND
R0
R1
R2
GND
R3
R4
R5
GND
10
G0
G1
G2
GND
G3
G4
G5
GND
B0
B1
B2 5
GND
B3
B4
B5
GND
HS
VS
DE
UD/RL
GND
0
NC
NC
GND
0 5 10
GND
LVDD4
LVDD3 4
LVDD2
39
40 LVDD1 J205
to the LOGIC unit J806
to the MAIN SENSOR
1 14
8 9
1 22
11 12
25
26
50
51
15 20 25 30 35 40 45
1 2 18
J4
1 17
to the SW-B board J1
8 - 1
MP301
1
100
16 9
76
75
1 8
50 55 60 65 70 75 80
Horizontal
2 10 2 10
J7 J5
1 9 1 9
to the VR-D board J1
1 16
8 9
9 8
16 1
85 90 95 100 105 110 115
3 1
J302
to the CF board J3
J203
19 1
20 2
to the LOGIC unit J805
1 16
8 9
J3
GND 1
2 GND
3R3V
MSQL
MAGL
PWRL
MIGL
SSQL
SAGL
DELL
KYSL
KI11
KI10
KI9
KI8
KI7
NC
NC
NC
20 11
NC
NC
MOND
PWRK
TRAK
SNBD
SNRD
SAGD
MNBD
MNRD
MAGD
TMD
TN2D
TN1D
VOXD
1 10 PWRD
STBD
LDPS
NC
GND 29
40 GND
to the SW-A board J3
J301
GND
2
CFLH
1
to the LCD
J6
M8V 1
MSND
2
NC
NC
NC
NC
NC
NC
SQLS
PHNI
NC
DSHK
DOTK
NC
MUDL
NC
NC
SAFL
SRFL
MAFL
MRFL
SNRL
SNBL
MNRL
MNBL
3R3V
NC
GND
NC 29
NC
30
to the VR-A board J1
120 125 130 135