29
C:\WINNT\Profiles\Administrator\Desktop\NAV-
U\2695873121NVU81U\01US02NAV-U.fm
masterpage:Right
NV-U81T/U81
2-695-873-
12
(1)
Troubleshooting
The following checklist will help you
remedy problems you may encounter with
your unit.
Before going through the checklist below,
check the connection and operating
procedures.
The operation icons on the display do
not function.
An operation may take time while a map is
displayed.
The unit does not turn on.
t
Charge the built-in battery.
– Install the unit properly according to
the supplied installation manual.
– Connect the unit to an outlet using the
AC power adapter and the AC power
cable.
– Connect the unit to the cigarette
lighter socket using the car battery
adapter.
The built-in battery cannot be
charged.
t
If the AC power adapter is being used,
disconnect it from the outlet, then
reconnect.
t
Reconnect the car battery adapter to the
cigarette lighter socket.
t
The built-in lithium-ion battery can be
charged at temperatures between 5 – 45
ºC (41 – 113 ºF). The battery may not be
charged if the temperature inside the unit
increases because of direct sunlight
exposure, etc. This is not a malfunction.
GPS signal cannot be received.
• Read the GPS overview (page 7).
• The system cannot receive GPS signals
due to an obstruction.
t
Move your car to a place where signals
can be received clearly.
• GPS signal reception is low.
t
Check the GPS status by selecting
“More...” in the top menu
c
“GPS
Status.”
• There is an obstacle in front of the GPS
antenna.
t
Install the unit where the signal is not
interrupted by the body of the car, etc.
• GPS signal reception may be prevented by
a heated or heat reflective windshield.
t
Depending on the windshield type,
GPS signal reception may not be
possible.
00US+00COV-U.book Page 29 Friday, November 10, 2006 6:24 PM
