Icom IC-7800 Service Manual Addendum page 359

Pin Port
number name
Input port for the driving current detect
119 FANI
signal at the cooling fan.
Input port for the external keypad on
120 EPAD
the rear panel.
Input port for the data signal from the
121 DX1A
DSP IC on the DSP-A board.
Input port for the data signal from the
122 DX1B
DSP IC on the DSP-B board.
Input port for the data signal from the
123 DX1T
DSP IC on the DSP-TX board.
Input port for the data signal from the
124 DX1S
DSP IC on the SCOPE unit.
Input port for the internal antenna
127 IKEY
tuner KEY signal.
128 SKYS Input port for the straight key.
Outputs CW/RTTY keying signal to
135 DSKY
the DSP IC.
Outputs power control signal to the
linear circuit.
137 PWRS
High: The linear circuit is ON.
Outputs clock signal to the D/A con-
138 METCK
verter (IC603) for the external meter.
Outputs clock signal to the D/A con-
140 METLR
verter (IC603) for the external meter.
Outputs data signal to the D/A con-
142 METDT
verter (IC603) for the external meter.
Description
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