![background image](http://html.mh-extra.com/html/icom/ic-7800/ic-7800_service-manual_612345146.webp)
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Horizontal
5
10
15
0
25
30
35
20
45
50
55
40
65
70
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60
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105
110
115
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120
V
er
tical
METS
DAVOX
SDAT
DSPR
GND
SCK
TNDB
DSPK
GND
SYNCIO
DFRT
DFXS
VSQA
NSQA
SST2
DRES
DV0X
RX1S
TNDA
DFRS
RTDA
DX1A
SPS0
DFXA
DFXB
SST1
DFRA
DX1B
FRWT
VSQB
NSQB
EPAD
DFRB
DFXT
METM
RTDB
DSKY
MUTEI
CTFL
DX1T
to the MAIN unit J940
1
2
39
40
J808
CIV
VDL
MDAT
IDL
MCK
GND
EXRL2
LED0
FANV
MSTB1
EXRL1
CIVE
ASTB2
DULSB
VOXAFE
RSTBA
DULSA
RSTBB
VOXAF
SR8V
SQLS
MR8V
SQLM
T8V
SQLAS
ASND
LED1
SQLAM
MSTB2
SEND
ASTB1
KEY
GND
REFV
FORV
THML
SENI
ALCL
RTKI
TRVI
to the MAIN unit J900
1
2
39
40
J809
PSTA
GND
P+5V
R8V
UNLKA
PSLA
GND
P+15V
GND
T8V
PDATA
GND
GND
P+5V
DRES
C2A2
GND
GND
P+15V
C2A1
PCKA
GND
1 to the RXPLL-A unit J2
2
21
22
J816
GND
+15V
DSTBA
DDAT
NC
DCK
DSDAB
DSCLB
+3R3V
DSONB
DSDAA
NC
DSCLA
DSAPB
GND
+15V
DSONA
DRESH
DSAPA
DSTBB
20
to the DIGISEL unit J10
19
2
1
J813
+8V
NC
LTXD
NC
LG_RES
GND
GND
LRXD
GND
MSND
C15V
C15V
NC
GND
LG_PWR
GND
+3R3C
VDD5VF
C15V
NC
20
to the DISPLAY board J203
1
J805
PWRS
C15V
GND
VDD1R5
VDD3R3
GND
VDD5
1
to the DC-DC unit J3
7
J821
+3R3V
+5V
LG_PWR
+15V
+15V
GND
GND
+15V
+8V
-
12V
1
to the DC-DC unit J4
10
J820
SPE
SPO
1
to the CHASSIS
unit SP1
2
J823
FAN
FANG
2
to the PA
unit MF1
1
J824
T8V
BPDAT
BPSTA
+15V
BPOE
BPSTB
+3R3V
BPCKA
MR8V
GND
GND
NC
12
to the BPF unit J1
1
J812
SPE
SPO
1
to the MAIN
unit J142
2
J822
MTXD1
MTXD2
GND
GND
MRXD1#
MRXD2#
GND
CISEL
8
to the SCOPE unit J910
1
J825
MICRECE
RXMRECE
RXSRECE
MICREC
RXMREC
MPLAYE
MPLAY
GND
MICPLAY
SPLAY
SPLAYE
MICPLAYE
RXSREC
1
to the MAIN unit J451
13
J810
SPDI
GND
GND
SPDO
1
to the MAIN
unit J901
4
J826
RX+
TX+
NC
RX
-
GND
TX
-
NC
NC
NC
1
to the SCOPE unit J907
9
J802
VBUS1
D
-
1
GND
GND
D+1
1
to the SCOPE
unit J908
5
J804
+3R3V
+3R3V
A21
A19
A17
A15
A13
A11
A9
A7
A5
A3
A1
A23
GND
+3R3V
A22
A20
A18
A16
A14
A12
A10
A8
A6
A4
A2
A0
GND
GND
1
15
16
30
to the MEMORY board J1
J1
+3R3V
CE01
CE00
CE02
CE21
CE20
CE22
VPEN
RP#
OE#
D15
D14
D13
D12
D11
D10
D9
D8
GND
GND
+3R3V
+3R3V
CE11
CE10
CE12
CE31
CE30
CE32
WE#
STS
D7
D6
D5
D4
D3
D2
D1
D0
BYTE#
GND
1
20
21
40
to the MEMORY board J2
J2
RGND
HC
BGND
BLUE
GREEN
RED
GGND
VSYNC
SGND
GND
GND
1
11
to the SCOPE
unit J909
J803
GND
R8V
UNLKB
P+5V
GND
GND
PSTB
PDATB
PSLB
GND
GND
C2B2
C2B1
PCKB
T8V
GND
P+15V
P+15V
GND
GND
DRES
P+5V
1
21
22
2
to the RXPLL-B unit J2
J815
P+15V
P+8V
OSS1
OSS2
OCS
ODAT
OCK
GND
GND
P+15V
10
2
1
9
to the OSC unit J2
J814
+15V
+15V
GND
T8V
GNDL
FORV
GND
TDAT
+15V
ISTA
TDRS
-12V
FSTB
TCK
TOE
GND
CSTB
GND
REFV
GNDL
GND
+3R3V
GND
IKEY
1
23
24
2
to the CTRL board J1
J811
50
1
CFD8
CFA8
CFA1
CFA10
CFD4
CFA2
RESET
CFD5
RDY/BSY#
CSEL#
CFD12
INPACK#
CFD1
CFA7
OE#
GND
IORD#
CFA4
GND
CD2#
BVD2
WP
CFA6
BVD1
CFD6
CFA5
CFD3
CFD7
CE2#
CFD2
CD1#
REG#
CFD15
CFA3
CFA9
VS2#
CFD0
CFD11
CFD9
VS1#
IOWR#
CE1#
CF_VCC
WAIT#
CFD10
CFD13
CFA0
CF_VCC
WE#
CFD14
to the CF board J1
J807
1
40
LVDD1
LVDD2
LVDD3
LVDD4
GND
GND
NC
NC
GND
UD/RL
DE
VS
HS
GND
B5
B4
B3
GND
B2
B1
B0
GND
G5
G4
G3
GND
G2
G1
G0
GND
R5
R4
R3
GND
R2
R1
R0
GND
LCLK
GND
to the DISPLAY board J202
J806
1
27
54
28
1
1
1
1
MP103
8
16
9
4
8
5
8
16
9
7
14
8
1
8
16
9
1
13
24
48
36
25
1
12
37
7
14
8
1
4
8
5
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