Operation Manual

■ 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.
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.
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 top cover. (p. 148)
w Remove the 11 screws, then remove 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.
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.
■ 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
desired.
NOTE: Resetting CLEARS all programmed con-
tents in memory channels and returns programmed
values in set mode to default values.
The IC-7600 has two fuse types as below installed for
transceiver protection.
• DC power cable fuses .............................. ATC 30 A
• C
ircuitry fuse .............................................. ATC 5 A
ATC 30 A fuse
PA shielding plate
ATC 5 A fuse
Speaker cable
POWER
F-INP
ENT
MW
149
11
MAINTENANCE