Maintenance And Troubleshooting - Cobra 2750 Operating Instructions Manual

Maintenance and Troubleshooting

Maintenance . . . . . .
Troubleshooting . .
Very little maintenance is required to keep this NAV ONE system in good operating condition.
Keep the unit components clean by wiping with a soft cloth slightly moistened with lens cleaner or isopropyl alcohol.
Do not use solvents or harsh or abrasive cleaners, which could damage the case or scratch the LCD.
Protect the unit from moisture and from being dropped or struck by hard objects to prevent damage.
Do not apply pressure to the LCD screen.
Consult the Cobra web site (www.cobra.com) for the latest software and database versions and compare them to
those stored in your unit to determine if updating is needed. Software and information updates are also available
in DVD ROM format and can be purchased as accessories. NAV ONE needs to be connected to a computer running
a Windows 98 or higher operating system with a DVD drive using a USB-2.0 cable to install the updates.
Problem Possible cause(s)
Power switch is turned off.
Brightness and contrast are
Display does
turned completely down.
not power up.
Fuse in unit cigarette lighter
adapter is blown.
No voltage is present at cigarette
lighter or other power point.
NAV ONE GPS indicator
NAV ONE antenna cannot "see" the sky.
will not turn green.
Push buttons on front
Power switch is turned off.
of unit do not work.
NAV ONE is not working properly.
Vehicle icon or map
does not move after
driving some distance.
Geographic area is not fully mapped.
Solution(s)
Turn the unit on with the button on the left side of the unit.
Use the controls on the right side of the unit to adjust
the display until it is comfortable to view.
Unscrew the adapter tip and inspect the fuse.
Replace fuse if blown.
Troubleshoot vehicle wiring. NOTE for some powerpoints,
ignition key must be at RUN for the point to be energized.
Move vehicle to open area and make sure the NAV ONE
antenna has a clear view of the sky.
Turn the unit on with the button on the left side of the unit.
Is NAV ONE GPS signal indicator green? If yes, go to next step.
If no, go to "NAV ONE indicator will not turn green" step.
Drive to a main road. If the map shows the road, the system
is working properly, but the area is not fully mapped.
Nothing Comes Close to a Cobra ® 17