Trouble Shooting - Hondex HDX-121 Operation Manual

TROUBLE SHOOTING

When the unit has any problems, please check the following points before
returning the unit for repair.
Symptom
Power cannot be
turned ON.
No display on
screen.
Latitude/longitude of
own vessel are not
indicated.
Display cannot be
moved.
Just above on
display and north of
map are swerved.
Automatic Course
Up function is not
available.
Waypoint navigation
cannot be set.
Route navigation
cannot be set.
Cause
Voltage of battery is lower
than standard value (11V).
Contact of power connector is
poor.
Wrong connection of power.
Opposite polarity + - .
Cut the wire inside power
cable.
Blown fuse.
Brightness is set to minimum
level.
Data from satellite cannot be
received well.
Data is not sent from GPS
receiver. (In case of using
external GPS receiver)
Numbers of received satellite
is less (0 3)
Cursor is shown on the screen.
Course-up function is set.
Setting method is wrong.
Latitude/longitude of own boat
are not indicated.
Waypoint is not set.
Latitude/longitude of own boat
are not indicated.
Route is not set.
124
Remedy
Recharge the battery.
Retighten it. Remove and clean
the rust/dust. Replace it in the
case of corrosion.
Replace the power cable.
Replace the connector on the
unit.
Check the polarity and connect it
properly.
Exchange to new power cable.
Send it for repair.
Adjust the brightness. (Refer to
[SCREEN BRIGHTNESS]
page18.)
Check GPS antenna and cable.
Check setting of data output
(GGA) from GPS receiver.
Wait for a while.
(Approx. 5 30 minutes)
Erase the cursor. (Refer to
[CURSOR] page 23)
In case you want to set just
above on display to north, set
North-Up function. (Refer to
[DISPLAY DIRECTION] page
26)
After setting Automatic Course
Up function is set, press
[COURSE UP] key.(Refer to
[DISPLAY DIRECTION] page
23)
Set after latitude/longitude are
indicated.
Set the waypoint.(Refer to
[ADVANCE WAYPOINT / RETURN
WAYPOINT] page56)
Set after latitude/longitude are
indicated.
Set the route.
(Refer to [SAVE (ERASE)
ROUTE] page54)