Fuse Replacement; D Dc Power Cable Fuse Replacement; D Circuitry Fuse Replacement; Resetting The Cpu - Icom IC-718 Instruction Manual

11
MAINTENANCE

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, adequately rated fuse.
WARNING: Turn the power OFF and disconnect
the DC power cable from the transceiver before re-
moving the transceiver's cover.

D DC power cable fuse replacement

Refer the figure illustrated at right for the DC power
cable fuse replacement.

D Circuitry fuse replacement

The 13.8 V DC from the DC power cable is applied to
all units in the IC-7600, except for the power ampli-
fier, through the circuitry fuse. This fuse is installed in
the PA unit.
q Remove the to top cover as shown left.
w Remove the 11 screws, then remode the bottom
cover and the PA shielding plate as shown at right.
e Replace the circuitry fuse as shown in the diagram
as at right.
r Replace the PA shielding plate, top cover and
screws to their original position.

Resetting the CPU

q Turn the transceiver power OFF in advance.
w While pushing and holding [F-INP ENT] and [MW],
push [POWER] to turn power ON.
• The internal CPU is reset.
• The CPU start-up takes approx. 5 sec.
• The transceiver displays its initial VFO frequencies
when resetting is complete.
e Correct the set mode settings after resetting, if de-
sired.
NOTE: Resetting CLEARS all programmed con-
tents in memory channels and returns programmed
values in set mode to default values.
149
The IC-7600 has two fuses (DC power cable fuses)
installed for transceiver protection.
• DC power cable fuses .............................. ATC 30 A
• Circuitry fuse .............................................. ATC 5 A
ATC 30 A fuse
ATC 5 A fuse
POWER
i7600
ALL CLEAR
PA shielding plate
F-INP
MW
ENT