I Hm-157/Hm-162 Installation - Icom IC-M604 Instruction Manual

e Install an optional unit to J3 on the AF board as shown
below.
Optional unit
AF board
r 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 N.m). Otherwise
the transceiver may be damaged (torque too high) or lose
waterproof efficiency (torque too low).
• When unistalling the optional unit, remove it vertically.
Wiggling the unit from side to side may damage the op-
tional unit's connector.
CONNECTIONS AND MAINTENANCE

I HM-157/HM-162 installation

J3
HM-157
The optional HM-157 can be connected to the transceiver di-
rectly, as well as via the supplied connection cable for longer
distance remote operation. The connector of the connection
cable can be installed into a cabinet, wall, etc., as a built-in plug.
• The optional HM-162 should be installed to the transceiver using
the supplied connection cable.
For longer distance remote operation, the optional extension
cable, OPC-999/OPC-1541* (6 m; 20 ft/connecting between
transceiver and the connection cable), is available, and up to
two OPC-999/OPC-1541* can be added.
*OPC-999 : For the HM-157
OPC-1541 : For the HM-162
Do not connect the HM-157 to the OPC-1541, and the HM-
162 to the OPC-999/OPC-1000.
9
9
HM-162
51