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8. MAINTENANCE, TROUBLESHOOTING
8-3
8.4 Replacing the Magnetron
When the magnetron has expired, distant targets cannot be seen on the display. When you
feel that long range performance has decreased, contact a FURUNO agent or dealer about
replacement of the magnetron.
Radar model and magnetron used
Model Magnetron Type Code No.
MODEL 1824C-BB E3588 000-146-866
MODEL 1834C-BB E3571 000-146-867
MODEL 1934C-BB MAF1421B 000-147-385
MODEL 1944C-BB MAF1422B 000-146-871
MODEL 1954C-BB MAF1425B 000-146-872
8.5 Replacing the Synchro Belt (1824C-BB only)
When the synchro belt of MODEL1824C-BB has worn out, the sweep is not synchronized
with antenna rotation, which results in an abnormal picture.
When you suspect that the synchro belt has worn out, contact a FURUNO agent or dealer
about replacement. (Type: 40 S2M 266UG, Code No.: 000-808-743)
8.6 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 using 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 retainer ring. Be sure the retainer ring is not inserted reversely.
Note: Trackball maintenance parts are available as below.
Part Type Code No.
Retainer ring and ball MU3721 000-144-645
Retainer Ring
PUSH TO ENTERPUSH TO ENTER
DEFDEF
MNOMNO
VWXVWX
_'#_'#
POWERPOWER
RANGERANGE
TXTX
00
JKLJKL
44
77
STUSTU
55
88
ABCABC
2211
BB
GAINGAIN
ALARMALARM
EBLEBL
VRMVRM
PQRPQR
YZ&YZ&
66
99
DISPDISP
EE
MENUMENU
CC
DD
CLEARCLEAR
GHIGHI
33
SAVESAVE
MOBMOB
HIDEHIDE
SHOWSHOW
AA
190


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