Honeywell Vibrex 2000 User Manual page 253

6.4.1.2
In some early versions of the Vibrex firmware, the fault log fills
and begin to corrupt the working power of the processor. In such
cases, it is necessary to manually clear the fault log; clear the
fault log, as follows:
1. Press and continue to hold down the
CAUTION: Never clear the fault log without first printing
it out, if possible. It is important that you keep a record of
this data.
2. Press the
3. Release the
Also, the user may turn on the unit and press
up test.
Keep in mind that, if you clear the fault log without printing it,
and clearing doesn't fix the problem, there is no data left to help
troubleshoot the instrument. If you call the Technical Operations
Center, sending or faxing us a copy of the fault log is most
helpful in determining the cause of a problem.
6.4.1.3
Basically there are three failure modes that prevent the Vibrex
unit from acquiring a reading, as listed in the fault logs. These
modes are
Azimuth Unstable - Means the Vibrex unit is not getting a
steady one- per- revolution signal from the photocell. This
problem could be happening because the photocell is
clipping the tape in two spots, is proxing (getting returns
from a shiny surface), or has failed (rare).
No Azimuth - Is caused by using too little tape to register
(obvious, because the Vibrex unit acquires data at lower
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Clearing the Fault Log
key until the power-up, self-test screen
ON
displays.
key.
0
Failure Modes
Chapter 6 – Maintenance
13841 Rev A
237
(zero) key.
0
during the power-
0