Fuse Replacement; Resetting The Cpu - Icom ic-7700 Instruction Manual

■ Fuse replacement

■ Resetting the CPU

POWER
ALL CLEAR
F-IMP
MW
ENT
13-7
When no external DC output is available from [EXT
DC] and ACC connectors, the internal fuse may be
open. Replace the fuse in this case.
RWARNING! DISCONNECT the AC power cable
from the AC outlet before removing the transceiver's
cover.
q Remove the bottom cover as shown left.
w Remove the 8 screws from the shield cover of the
transceiver's bottom side.
e Replace the open fuse with a new, properly rated
one (FGB 2 A) as shown at left.
r Return the inside cover and bottom cover and
screws to the original position.
q Turn the main power switch on the rear panel ON.
• Make sure the transceiver power is still OFF.
w While holding down
to turn ON the power.
POWER
• 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 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.
The transceiver cannot be reset in the standby mode.
If the transceiver is so, release the standby mode.
q Push to turn ON the power.
POWER
w Hold down
POWER
dialog box.
e Rotate the main dial or push [q]
"Shutdown."
r Push to turn OFF the power.
POWER
t Perform from steps w above.
MAINTENANCE
and , push
F-INP MW
ENT
for 1 second to display the
to select
F-2
13