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46
9
CONNECTIONS AND MAINTENANCE
■
Optional unit installation
CAUTION:
DISCONNECT
the DC power cable from the
transceiver before performing any work on the transceiver.
Otherwise, there is danger of electric shock and/or equip-
ment damage.
Follow the case opening procedure shown here when you
want to install an optional unit.
q
Remove the 6 screws as shown below and open the trans-
ceiver.
w
Remove the 4 screws from the shielding plate, then lift up
the shielding plate.
e
Plug an optional unit (UT-98 or UT-112) to J3 on the MAIN
unit as shown below.
r
Return the shielding plate and assemble the units to their
original positions.
CAUTION:
• When re-assembling the case and tightening the screws,
you must keep the specified torque (0.7±0.1 N.m). Oth-
erwise the transceiver may be damaged (torque too high)
or lose waterproof efficiency (torque too low).
• When uninstalling the optional unit, remove it vertically.
Wiggling the unit from side to side may damage the op-
tional unit's connector.
Optional unit