Cdu Cold Start - Clearing Memory To Factory Default - NorthStar MX500 Operator's & Installation Manual

Operator's Manual
CDU also performs background tests on the program memory (FLASH
ROM), the real-time Clock, and the Serial (NMEA) Ports. These tests
check about 90% of the CDU. The items which it does not check are
the GPS and Beacon receivers in the antenna.
If one of the background tests fail, you can try clearing the CDU's
memory to see if the problem will clear. However, when you clear the
memory (also known as a Cold Start), you will erase all waypoints and
configuration settings. A cold start sets the CDU back to factory de-
fault settings.
Otherwise, record the failure(s) and contact your dealer or BNT-ME to
arrange for service or repairs. It is possible, but unlikely, that a cold
start will correct other failures noted during the selftest. BNT-ME will
need the CDU serial number (from the rear panel) and the Software
Version number to help you further.
Press the EDIT key when you are finished viewing the results.

CDU Cold Start - Clearing Memory to Factory Default

When you Cold Start the CDU, you will erase all of your waypoints
and configuration settings. A cold start sets the CDU back to factory
default settings. Perform this procedure if the CDU becomes non-re-
sponsive, fails one of the self tests described above, or starts acting
very unusually.
To perform the cold start:
170
1. Turn the CDU off. There are three methods you can use:
A) Press the On/Off function key and highlight the Yes softkey
then press ENT. This causes a software shut down of the
CDU.
B) Press and hold the On/Off function key for up to 5 seconds,
this causes a hardware shut down of the CDU.
C) Turn power off at the circuit breaker panel feed or power
supply which feeds the CDU. This is the preferred method.
2. Hold the CLR button down while applying power to the CDU;
continue holding the button until you hear a normal key click
for the softkey.
3. Release the button.
4. Press the POS function key. If the position reads N 00
°
W 000 00.0000, then the CDU was properly reset. If it does
not, try the procedure again.
Engineering Mode
°
00.0000,
Version 3.0