8. MAINTENANCE, TROUBLESHOOTING
8-6
8.5
How to Clean the Filter
The units in the illustration below have vents with filters. Check the filters for dust ac-
cumulation and clean when necessary. If replacement of a filter is necessary contact
your dealer.
8.6
How to Clean the Trackball in the Control Unit
If the trackball does not roll smoothly it
may require cleaning. Do the following to
clean the trackball.
1. Turn the retaining ring on the track-
ball 45°.
2. Remove the retaining ring and ball.
3. Clean the ball with a soft lint-free
cloth.
4. Blow carefully into the ball-cage to dislodge dust and lint. Look for a build-up of
dirt on the metal rollers. If dirty, clean the rollers with a cotton swab moistened
lightly with isopropyl-rubbing alcohol.
5. Make sure that fluff from the swab is not left on the rollers.
6. Replace the ball and retaining ring. Be sure the retaining ring is not inserted re-
versely.
PROCESSOR UNIT
TRANSCEIVER UNIT
HULL UNIT
CONTROL BOX EXTENSION BOX
Vent
Vent
(both sides)
Vent
(both sides)
Vent
(both sides)
Trackball
Retaining
ring
Summary of Contents for FSV-2S
Page 1: ...COLOR SCANNING SONAR FSV 25 FSV 25S OPERATOR S MANUAL www furuno com Model ...
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Page 74: ...2 HORIZONTAL MODE 2 44 This page is intentionally left blank ...
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