Magellan NAV 6500 - Manual (Page 68)

Magellan NAV 6500/NAV 6510 60
Troubleshooting
The following is a brief guide to some of the problems that
might be encountered while using the Magellan NAV 6500/
NAV 6510 and what you can do to correct them.
Receiver will not turn on
Ẅ The receiver may not have been hooked up
correctly to external power, or the external
power source is not working. Check the con-
nections, and be sure the external power source
is working. The power supply used or the cir-
cuit breaker that the unit is connected to should
be rated for at least 0.5A at 12V for the
NAV 6500 or 1.0A at 12V for the NAV 6510.
Use only the Magellan Power/Data Cable to
connect the receiver to external power.
ẅ Press power key.
Receiver will not compute a position fix
Ẅ Make sure that the antenna has a clear and un-
obstructed view of the sky.
ẅ Check the antenna connections. Make sure the
coaxial cable is firmly secured to the back of
the unit. Check along the length of the cable
to make sure it is not cut. With a voltmeter,
you may also measure the voltage output from
the unit to the antenna, which should be 5
±
0.25 VDC between the center conductor and
the shield of the TNC connector. (You need
to measure across a 100ohm resistor for cor-
rect reading.)
Ẇ Have you moved more than 300 miles with
the receiver off since your last position fix? If
so, the receiver may need to be reinitialized.
ẇ Check UTC date and time. If it is wrong, re-
enter it under Aux-General Setup.
Ẉ If the receiver status on any of the NAV screens
is “No GPS,” turn the unit off and on.
ẉ If none of the above works, do a GPS reset.
Select Memory Reset under Aux and execute
the “GPS Reset Only.”
Frozen display, keypad does not respond
Ẅ Disconnect power and wait for the receiver to
turn off. Reconnect power, turn power back
on.