Furuno FMD-1712 - Manual (Page 27)

19
Connection of external buzzer (option)
The external buzzer provides an aural alarm
when the guard zone is violated.
60 mm
50 mm
2-
φ
3.5
Figure 3-6 External buzzer
External buzzer installation kit contents
Type: OP03-168, Code No.: 008-462-790
Name Type Code no. Qty
MJ-XH conn. 03-2022 (2-3P) 008-463-540 1
Buzzer assy. 80-0641 008-462-800 1
Procedure
1. Unfasten screws and three connector
nuts (NMEA, POWER, DJ-1) from the
rear cover to detach it.
2. Place the rear cover on a workbench,
out side up.
3. Using a slotted-head screwdriver and
hammer, punch out the “hole cover”
from the location shown in the figure
below. Remove burrs from the hole with
a fine file or sandpaper.
Remove hole cover with
slotted-head screwdriver and
hammer. Remove burrs from hole
with fine file or sandpaper.
J6 located at right
side of shield case
under the rear panel.
Figure 3-7 Display unit, rear view
4. Set the gasket to the MJ connector and
insert the connector in the hole made at
step 3.
5. Fasten the connector with the connector
nut (torque: 0.75-0.78 N
•
m). Tighten the
connector nut by hand until you feel
slight resistance and then turn it an
additional 45
°
with a box wrench.
6. Plug in the XH connector at the end of
the MJ connector into J6 on the DU
Board. (See Figure 3-7 for location.)
7. Insert NMEA, POWER and DJ-1
connectors. Tighten connector nut by
hand until you feel slight resistance and
then turn it an additional 90
°
(NMEA and
POWER) or 45
°
(DJ-1) with a box
wrench.
8. Reattach the cover. (Be sure the gasket
is correctly positioned and there is no
foreign material in the unit before closing
the cover.)
9. Fasten the buzzer within 1 m of the
display unit with two tapping screws
(3X15 or 3X20, local supply).
10. Attach the connector from the external
buzzer to the MJ connector.
Connector nut
Rear cover of
display unit
Gasket
MJ connector
XH connector
(to J6 on DU Board)
Figure 3-8 How to assemble
MJ-XH connector assembly
Note: Assemble the MJ-XH connector
assembly exactly as shown in Figure
3-8, otherwise watertight integrity
cannot be guaranteed. Further,
watertight integrity cannot be
guaranteed if foreign material (dust,
etc.) is on the connector when it is
assembled.