Icom IC-910H - Fuse Replacement and CPU Reset

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MAINTENANCE
n 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, rated fuse.
CAUTION: DISCONNECT the DC power cable
from the transceiver when changing a fuse.
The IC-910H has 2 types of fuses installed for trans-
ceiver protection.
•DCpowercablefuses �������� FGB 30 A
•Circuitryfuse ������������ FGB 4 A
DC POWER CABLE FUSE REPLACEMENT
30 A fuse
CIRCUITRY FUSE REPLACEMENT
The 13.8 V DC from the DC power cable is applied to
all units in the IC-910H, except for the power amplifi-
er, through the circuitry fuse. This fuse is installed in
the PA unit.
q Remove the top cover as shown on p. 71.
w Remove the 11 screws from the PA shielding plate,
then remove the plate.
e Replace the circuitry fuse as shown in the diagram
at right.
r Replace the PA shielding plate and top cover.
Circuitry fuse (4 A)
n CPU resetting
Resetting CLEARS all programmed contents in
memory channels and returns programmed values
in set mode to default values.
When first applying power or when the function
seems to be displaying erroneous information, reset
theCPUasfollows:
q Make sure the transceiver power is OFF.
w While pushing [MW 4] and [M-CL 5], push
[POWER] to turn power ON.
 •TheinternalCPUisreset.
 •The transceiverdisplays its initialVFOfrequencies
when resetting is complete.
[POWER] [MW 4] [M-CL 5]