Optional Ut-109 Or Ut-110Installation - Icom IF1721/D Instruction Manual

4
CONNECTION AND MAINTENANCE
Optional UT-109 or UT-110 installation
■
Install the optional UT-109 or UT-110 unit as follows:
Turn the power OFF, then disconnect the DC power cable.
q
Unscrew the 4 cover screws, then remove the bottom
w
cover.
Cut the pattern on the PCB at the TX mic circuit (MIC)
e
and RX AF circuit (AF OUT), then solder CP37 as shown
below.
MIC and AF OUT
29
FRONT FRONT
CP37
Install the unit as shown in the diagram below.
r
Replace the bottom cover and screws, then re-connect the
t
DC power cable.
NOTE: When uninstall-
ing the unit
Be sure to re-solder the
disconnected points and
un-solder the connected
points as above when
you remove the unit. Oth-
erwise no TX modulation
or AF output is available.
FRONT FRONT
Re-solder
Un-solder
Remove