37
11
MAINTENANCE
CIRCUITRY FUSE REPLACEMENT
The 13.8 V DC from the DC power cable is applied to
all units in the IC-R75 through the circuitry fuse. This
fuse is installed in the MAIN unit.
q
Remove the top cover as shown on p. 34
w
Replace the circuitry fuse as shown in the diagram
at right.
e
Replace the top cover.
FGB 3 A
■
Fuse replacement
If a fuse blows or the receiver stops functioning, try to
find the source of the problem, and replace the dam-
aged fuse with a new, rated fuse.
CAUTION:
DISCONNECT the DC power cable
from the receiver when changing a fuse.
The IC-R75 has 2 types of fuses installed for receiver
protection.
• DC power cable fuses .................................. FGB 3 A
• Circuitry fuse ................................................ FGB 3 A
DC POWER CABLE FUSE REPLACEMENT
3 A fuse
■
Clock backup battery replacement
The receiver has a lithium backup battery (CR2032)
inside for clock and timer functions. The usual life of
the backup battery is approximately 2 years.
When the backup battery is exhausted, the receiver
receives normally but cannot retain the current time.
CR2032
