Maintenance; I Fuse Replacement; I Memory Backup; I Cleaning - Icom IC-703 Instruction Manual

13

MAINTENANCE

I 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-703 has three of fuses (DC power cable fuses×
2, circuitry fuse × 1) installed for transceiver protection.
• Fuses ............................................. F.G.B. 125 V 4 A
CIRCUITRY FUSE REPLACEMENT
The 13.8 V DC from the DC power cable is applied to
all units in the IC-703, except for the power amplifier,
through the circuitry fuse. This fuse is installed in the
PA unit.

I 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.

I Cleaning

If the transceiver becomes dusty or dirty,
wipe it clean with a dry, soft cloth.
83
DC POWER CABLE FUSE REPLACEMENT
q
w
AVOID the use of strong chemical solvents
such as thinner, benzine or alcohol to clean
the transceiver. These may damage the
transceiver's surfaces.
e
Fuse