Icom IC-R75 Instruction Manual - Page 41

Fuse replacement, Clock backup battery replacement

Get Icom IC-R75 PDF manuals and user guides View all Icom IC-R75 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 41 highlights

MAINTENANCE 11 ■ Fuse replacement If a fuse blows or the receiver 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 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 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 R emove the top cover as shown on p. 34 w R eplace the circuitr y fuse as shown in the diagram at right. e R eplace the top cover. DC POWER CABLE FUSE REPLACEMENT 3 A fuse FGB 3 A ■ 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 w e r q 37

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
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
damaged 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
e
r
q
w