17
4
CONNECTION AND MAINTENANCE
■
Optional UT-105 and UT-108
installation
The optional UT-105 and UT-108 units install as follows:
q
Turn power OFF, then disconnect the DC power cable.
w
Unscrew the 4 screws, then remove the bottom cover.
e
Install the unit as shown in the diagram below.
r
Replace the bottom cover and screws, then the DC power
cable.
NOTE:
The sponge supplied with the UT-105 is for the IC-F30/F40
series transceivers only.
■
Optional UT-109 /UT-110 in-
stallation
q
Turn power OFF, then disconnect the DC power cable.
w
Unscrew the 4 screws, then remove the bottom cover.
e
Cut the print pattern on the PC board at the TX mic circuit
(A) and RX AF circuit (B) as shown in the following figure.
r
Install the Scrambler unit as shown in the left.
t
Replace the bottom cover and screws, then the DC power
cable.
NOTE:
Be sure to resolder above
disconnected points, otherwise
no TX modulation or AF output is
available when you remove the
scrambler units.
A
B
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