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5-1
This chapter tells you how to keep your radar in
good working order. Before reviewing this chap-
ter please read the safety information which fol-
lows.
Turn off the power before
performing any maintenance or
troubleshooting procedure.
DANGER
Hazardous voltages can shock, burn or cause death.
Only qualified personnel totally famillier with electrical
circuits should work inside the units.
RF RADIATION HAZARD
The radar scanner emits high frequency
radio radiation which can be harmful,
particularly to your eyes.
Never look directly into the scanner from a distance of
less than two feet when the radar is in operation as
you could injure the cornea of your eyes. Always
make sure the radar is set to stand-by or is turned off
before starting work on the scanner unit.
5.1 Preventive Maintenance
Regular maintenance is important for good per-
formance. Always keep the equipment as free as
possible from dirt, dust, and water splashes. Make
sure all screws securing the components are prop-
erly tightened.
A maintenance program should be established and
should at least include the items listed in Table 5-
1.
5.2 Replacing the Fuse
The fuse in the fuse holder at the back of the dis-
play unit protects the equipment against reverse
polarity of ship's mains, overcurrent, and equip-
ment fault. If the fuse blows, find the cause be-
fore replacing it. Never use an incorrect fuse -
serious damage to the equipment may result and
void the warranty.
FR-7062/7112 is shipped with a 15 A fuse for 12V
ship's mains. If the ship's mains is 24/32V, change
the fuse to 10 A (supplied).
FR-7252 is supplied with a 10A fuse for 24/32
V ship's mains.
5. MAINTENANCE & TROUBLESHOOTING
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CAUTION
Use the proper fuse.
Use of a wrong fuse can result in
equipment damage.
Table 5-1 Recommended maintenance program