Bird Technologies AT-800-Manual - Manual (Page 67)

Maintenance
49
Troubleshooting
Operator maintenance or service is limited to battery
and fuse replacement. Any other required service must
be performed at an authorized Bird Service Center.
Refer to the following paragraphs for help in isolating
error conditions.
The Antenna Tester will not power up
Power for the Antenna Tester can be provided in three
ways—the internal batteries, an AC mains adapter or an
optional automobile cigarette lighter adapter cable. Try to
power the tester using each available means. The internal
batteries may need charged, or if recently replaced, are
installed incorrectly. The AC mains adapter may not be
securely connected, may be damaged, or there is no power
supplied at the wall receptacle. The internal fuse may
have opened and requires replacement.
Note: If the unit was recently opened, recheck
P2, the battery connector, be sure it is securely con-
nected. Follow the instructions for battery and fuse
replacement when opening the unit.
NVRAM Test Fails
An NVRAM error indicates the information in nonvol-
atile memory is not valid. The probable cause is power
loss. When the unit is off, the batteries, if charged and
present, or power from the AC mains adapter, if con-
nected, supply power to retain stored trace data and
software settings. This information is lost if all power
is removed. Clear the error by pressing the ESC key.
Be sure to read battery charging and replacement sec-
tions if the problem persists.
ROM, EEPROM, RAM, A/D, TEMPR, PLL Test Fails
Ensure the results are valid by repeating the self test
or turning the unit off then back on. If the problem
persists return the unit for service.