Trackball Maintenance - Furuno FR-8062 Operator's Manual

6. MAINTENANCE & TROUBLESHOOTING
6.4

Trackball Maintenance

If the cursor skips or moves abnormally, you may need to clean the Trackball.
1. Turn the retainer ring counterclockwise 45° to unlock it.
2. Remove the retainer ring and ball.
3. Clean the ball with a soft lint-free cloth, and then blow carefully into the ball-cage to dislodge
dust and lint.
4. Look for a build-up of dirt on the metal rollers. If dirty, clean the rollers with a cotton swab moist-
ened lightly with isopropyl-rubbing alcohol.
5. Make sure that fluff from the swab is not left on the rollers.
6. Replace the ball and retainer ring. Be sure the retainer ring is not inserted reversely.
Trackball maintenance parts are available as below.
Part
Retainer ring and ball
6-4
DIsplay unit
Type No.
MU3721
POWER
BRILL
GAIN
STBY
PUSH AUTO/MAN
TX
SEA
MODE
PUSH AUTO/MAN
CUSTOM RAIN
PUSH AUTO/MAN
+
F1
RANGE
-
F2
OFF
ZOOM
CENTER
TARGET
TRAILS
ALARM
EBL VRM
MENU TLL
CANCEL
ENTER
HL OFF
Trackball
Code No.
000-144-645