28
4CONNECTION AND MAINTENANCE
■Optional UT-109 or UT-110
installation
qTurn the power OFF, then disconnect the DC power cable.
wUnscrew the 4 cover screws, then remove the bottom cover.
eCut the pattern on the PCB at the TX mic circuit (MIC) and
RX AF circuit (AF OUT), then solder CP37 as shown below.
rInstall the scrambler unit as described in the installation of
optional UT-111 installation on p. 27
tReplace the bottom cover and screws.
■Optional OPC-617 installation
Install the OPC-617 as shown below.
q
Dimmer cont. IN
wAF OUT
eDet. AF OUT
rMod. IN
tPTT control IN or
yHorn drive cont. OUT
uAF GND
iDet. AF GND
oMod. GND
OPTIONAL CABLE PIN ASSIGNMENT
t r e w q
o i u yFTSW control IN
OPC-617
Cut off the bushing as in the
illustration, when you install
the optional OPC-617.
FRONTFRONT
MIC and AF OUT
CP37
Un-solder
Re-solder
Remove
NOTE: When uninstalling
the unit
Be sure to re-solder the
disconnected points and
un-solder the connected
points as above when you
remove the unit. Otherwise
no TX modulation or AF
output is available.