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119
FANI
Input port for the driving current detect
signal at the cooling fan.
120
EPAD
Input port for the external keypad on
the rear panel.
121
DX1A
Input port for the data signal from the
DSP IC on the DSP-A board.
122
DX1B
Input port for the data signal from the
DSP IC on the DSP-B board.
123
DX1T
Input port for the data signal from the
DSP IC on the DSP-TX board.
124
DX1S
Input port for the data signal from the
DSP IC on the SCOPE unit.
127
IKEY
Input port for the internal antenna
tuner KEY signal.
128
SKYS
Input port for the straight key.
135
DSKY
Outputs CW/RTTY keying signal to
the DSP IC.
137
PWRS
Outputs power control signal to the
linear circuit.
High: The linear circuit is ON.
138
METCK
Outputs clock signal to the D/A con-
verter (IC603) for the external meter.
140
METLR
Outputs clock signal to the D/A con-
verter (IC603) for the external meter.
142
METDT
Outputs data signal to the D/A con-
verter (IC603) for the external meter.
Pin
Port
Description
number
name
Summary of Contents for IC-7800
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 65 VOLTAGE DIAGRAM 67 Dec 2009 ...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 60 VOLTAGE DIAGRAM 64 Feb 2009 ...
Page 157: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Aug 2008 ...
Page 245: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Jul 2008 ...
Page 333: ...THE TRANSCEIVER i7800 SERVICE MANUAL S 14015HZ C1 2 Mar 2006 ...
Page 555: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14015HZ C1 2 C 2004 2006 Icom Inc ...