Icom HF/VHF/UHF ALL MODE TRANSCEIVER manual Maintenance, Fuse replacement, Memory backup, Cleaning

MAINTENANCE 8

■Fuse replacement

If a fuse blows or the transceiver stops functioning, try to find the source of the problem, and replace the damaged fuse with a new, rated fuse.

Caution: Disconnect the DC power cable from the transceiver when changing a fuse.

The IC-706MKIIG has 2 types of fuses installed for

transceiver protection.
• DC power cable fuses	...................................... 30	A
• Circuitry fuse	F.G.M.B. 125 V 4	A

DC POWER CABLE FUSE REPLACEMENT

30 A fuse

CIRCUITRY FUSE REPLACEMENT

The 13.8 V DC from the DC power cable is applied to all units in the IC-706MKIIG, except for the power amplifier, through the circuitry fuse. This fuse is installed in the PA unit.

4 A Fuse

■Memory backup

All of the CPU’s memory is backed up by an EEP- ROM (Electronically-Erasable Programmable Read- Only Memory). All data you set, such as VFO, mem- ory, set mode contents, etc. is stored in this EEP- ROM. There is no internal lithium battery.

■Cleaning

If the transceiver becomes dusty or dirty, wipe it clean with a dry, soft cloth.

AVOID the use of strong chemical solvents such as thinner, benzine or alcohol to clean the transceiver. These may damage the transceiver’s surfaces.

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