Furuno FR-1500 MARK-3, User Manual

Page: 88 / 125

-5.2-
Terminal strips
and plugs in
antenna unit
Open antenna cover to
check terminal strip and plug
connections inside. Also
check the rubber gasket of
antenna covers for
deterioration. When closing antenna covers
in position, be careful not to
catch loose wires between
covers and unit.
6 months
to one
year CRT and
surrounding
components High voltage at CRT and
surrounding components
attract dust in environment
which will cause poor
insulation. Ask your nearest
FURUNO representative or
dealer to clean internal
high-voltage components. If CRT anode rubber cap or
wire sheath is cracked, ask
your dealer to replace it. Wait
for at least 3 minutes until high
voltage components (CRT and
HV capacitors) discharge their
residual charges before
accessing them.
Terminal strips,
sockets, earth
terminal
Check for loose
connections. Check contacts
and plugs for proper seating,
etc.
5.2 Life Expectancy of Major Parts
Parts Type Life expectancy Remarks
Antenna motor D8G-571 (X-band) 42 rpm
D8G-571 (X-band) 24 rpm
Gears more than 10,000 h Wind load 100 kt
Magnetron MG5389, X-band, 6 kW
MAF1422B, X-band, 6 kW
MG4006, X-band, 6 kW
MAF1425B, X-band, 12 kW
MG4010, X-band, 12 kW
MG5436, X-band, 25 kW
2,000 - 3,000 h
5.3 Replacement of Batteries
The GYRO CONVERTER Board (option) and the RP Board have a battery. The battery for the RP
Board preserves data when the power is turned off, and its life is about five years. When the
battery voltage of the battery on the RD Board is low, NG (No Good) appears at the diagnostic test
for the RP board. When this happens, contact your dealer to request replacement of the battery.