![background image](http://html.mh-extra.com/html/icom/ic-78/ic-78_service-manualvice-man_612336048.webp)
1
2
3
4
7
8
6
8
5
4
3
2
1
7
ESPO
AFO
AFO
AFE
GND
ESPO
ESPO
AFO
AFE
AFE
to PHONE board
J2
to VR board J1
J5
1
9
2
10
GND
GND
GND
GND
GND
AFGL
RFGL
RITL
SFTL
5VL
J3
1
2
10
9
to SENSOR
board
+5V
SEN1
SEN2
GND
1
4
MICE
AFO
SQLS
8V
GND
MIC
GND
SEND
UD
GND
to MIC board J2
J4
1
9
2
10
GND
DOTK
DASK
VOXL
AVXL
SML
ALML
REFL
FORL
PATL
BEEP
DNB
RXS
TXS
SBSY
KDS
DSPS
DSST
SSTB
DINT
DRES
ASTB
MSTB
FSTB
BSTB
MCK
MDAT
POWS
GND
GND
to MAIN unit J4401
29
1
5
15
25
30
2
10
20
1
5
15
25
30
2
10
20
30
2
1
J6
STRT
5V
SNDS
8V
8V
HV
14V
14V
FSKK
MICE
MIC
SEND
SQLS
SEND
SEND
SEND
SPS
PHOE
PHOE
PHO
PHO
GND
GND
GND
GND
CIVE
CIV
ALMS
NC
KEY
29
30
1
2
GND
8V
13V
DNB
DSTB
PDAT
CON1
FSKK
1
15
2
16
J9
J1
J7
to MAIN unit J4201
to LOGIC unit J1
NC
13V
13V
PSTB
PCK
CON2
CON0
SRST
to PLL unit J3
+5V
SEN1
SEN2
SENSOR
GND
P1
4
3
2
1
E
DN
UP
E
1
2
3
4
7
8
J1
PHONES
The combination of this page and the previous page
shows the unit layout in the same configuration as
the actual P.C. Board.
9 - 6
• BOTTOM VIEW (LOGIC UNIT)
The combination of this page and the previous page
shows the unit layout in the same configuration as the
actual P.C. Board.
• BOTTOM VIEW (MIC BOARD)
9-8 SENSOR BOARD
• TOP VIEW
• BOTTOM VIEW (PHONE BOARD)