Icom IC-7600

■ Fuse replacement
If a fuse blows, or the transceiver stops functioning,
find the source of the problem, and repair it.
Then replace the damaged fuse with a new,
adequately rated fuse.
CAUTION: Turn the power OFF and disconnect the
DC power cable from the transceiver before
removing the transceiver’s cover.
D DC power cable fuse replacement
Refer the figure illustrated at right for the DC power
cable fuse replacement.
157
11
MAINTENANCE
30 A fuse
PA shielding plate
ATC 5 A fuse
Speaker cable
POWER
F-INP
ENT
MW
■ Resetting the CPU
q First, turn the transceiver power OFF.
w While holding down [F-INP ENT] and [MW], push
[POWER] to turn power ON.
• The internal CPU is reset.
• The CPU start-up takes approximately 5 seconds.
• The transceiver displays its initial VFO frequencies
when resetting is complete.
e If desired, correct the set mode settings after
resetting.
NOTE:
• Resetting CLEARS all programmed contents
in memory channels and returns programmed
values in the set mode to default values.
• When “Standby/Shutdown” is selected in
“Shutdown Function” item (p. 142), hold down
[POWER] for 1 second, then select “Shutdown” to
turn OFF the power.
D Circuitry fuse replacement
Except for the power amplifier, the 13.8 V DC from
the DC power cable is applied to all units in the IC-
7600, through the circuitry fuse. This fuse is installed
in the PA unit.
q Remove the top cover. (p. 158)
w Remove the 11 screws, then remove the bottom
cover and the PA shielding plate as shown to the
right.
e Replace the circuitry fuse as shown in the diagram
to the right.
r Replace the PA shielding plate, top cover and
screws to their original position.
R WARNING! DO NOT pull the speaker cable
when removing or replacing the PA shielding plate.
Otherwise, a fire, injury or damage the transceiver
may occur.
The IC-7600 has two fuse types installed for
transceiver protection.
• DC power cable fuses 30 A
• Circuitry fuse 5 A