ICOM IC-M504 User Manual

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PRECAUTIONS

RWARNING! NEVER 

connect the transceiver to an AC

outlet. This may pose a fire hazard or result in an electric
shock.

Changes or modifications to this device, not ex-

pressly approved by Icom Inc., could void your authority to
operate this device under FCC regulations.

connect the transceiver to a power source of more

than 16 V DC or use reverse polarity. This will ruin the trans-
ceiver.

cut the DC power cable between the DC plug at the

back of the transceiver and fuse holder. If an incorrect con-
nection is made after cutting, the transceiver may be dam-
aged.

place the transceiver where normal operation of the

vessel may be hindered or where it could cause bodily injury.

the transceiver at least 3.3 ft (1 m) away from the

ship’s navigation compass.

use or place the transceiver in areas with temper-

atures below –4°F (–20°C) or above +140°F (+60°C) or, in
areas subject to direct sunlight, such as the dashboard.

the use of chemical agents such as benzine or al-

cohol when cleaning, as they may damage the transceiver
surfaces. If the transceiver becomes dusty or dirty, wipe it
clean with a soft, dry cloth.

The transceiver rear panel will become

hot when operating continuously for long periods.
Place the transceiver in a secure place to avoid inadvertent
use by children.

The transceiver and the optional HM-162

COMMANDMIC III

™/HM-157 

COMMANDMIC II

™ employ water-

proof construction, which corresponds to IPX8 of the interna-
tional standard IEC 60529 (2001). However, once the trans-
ceiver or microphone has been dropped, waterproofing
cannot be guaranteed due to the fact that the case may be
cracked, or the waterproof seal damaged, etc.