
Troubleshooting
30
10 Troubleshooting
Solving Common Problems
Problem
Possible Cause
Solution
One of the LEDs remains
off.
OR
One of the LEDs remains
green or red even if the
status is Warning.
LED is burnt.
Verify LEDs (see
Contact EXFO.
Pressing the
button
does not activate Pass/Fail
mode.
Unit is currently
nulling offsets,
verifying thresholds or
verifying LEDs and
LCD.
Let the unit complete
the operation.
If the unit was
verifying LEDs and
LCD, press any key to
return to your previous
mode (Pass/Fail or
Normal).
The current threshold
set contains an
unusable (corrupted)
value.
See
No threshold sets have
been defined.
See
P/F
mode
Содержание PPM-350C
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