14 MAINTENANCE

Fuse replacement

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

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

The IC-7000 has three of fuses (DC power cable fuses

2, circuitry fuse1) installed for transceiver protection.

•DC power cable fuses

ATC20 30 A

•Circuitry fuse

ATC20 5 A

DC power cable fuse replacement

CIRCUITRY FUSE REPLACEMENT

The 13.8 V DC from the DC power cable is applied to all units in the IC-7000, except for the power ampli- fier, through the circuitry fuse. This fuse is installed in the FRONT unit.

R WARNING: NEVER attempt to remove fuse

coverusing your finger nails, this may result in in- jury.

Screw driver

Fuse cover

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, memory, set mode contents, etc. is stored in this EEPROM. 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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Icom IC-7000 instruction manual Maintenance, Fuse replacement, Memory backup, Cleaning, Circuitry Fuse Replacement