-2.3-
2.3 REPLACING ACOUSTIC BEACON
The underwater acoustic beacon has a built-in battery with approx 6 year lifetime. The
beacon must be replaced with new one (type: DK-120, P/No. 000-148-648) by a qualified
service engineer before validity date marked on the beacon.
1. Unfasten two bolts and remove the beacon cover.
2. Use box screwdriver (7 mm) or slotted screwdriver to unfasten four bolts and then remove
the beacon.
3. Attach a new beacon.
Bolts
Acoustic beacon
Water switch is right side.
(The label is upside-down.)
Validity date should face in front.
DRU (Beacon cover removed)
Caution
As the acoustic beacon contains a battery, it must be
disposed in accordance with the local regulation.
2.4 REPLACING FUSES
The battery cable in the DCU contains two 10A fuses in fuse holders. If a fuse blows, the
BACKUP BATTERY LED may not be lighting. Find the cause before replacing a fuse.
Have a serviceman replace any fuse.
Name Type Code No.
Fuse FGBO 125 V 10 A 000-155-826-10
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