Light Source
47
8
Troubleshooting
Solving Common Problems
The following is a list of common problems along with their possible
causes and some recommended actions to solve them.
Note:
In all cases, if problem persists after performing the recommended actions,
contact EXFO.
Problem
Possible Cause
Recommended Action
LED push button does not
light up.
Power not on.
Check AC power cord and turn
on the IQS-500/600 Controller
or Expansion Unit
Module is not properly
inserted.
Turn off the IQS-500/600
Controller or Expansion Unit,
then remove and reinstall the
module.
Computer is locked up. Reboot the IQS-500/600
Controller Unit.
LED is burnt.
Call EXFO.
Pushing the LED push button
does not open the module
main window.
Computer is locked up. Reboot the IQS-500/600
Controller Unit.
Impossible to open a
window.
Too many windows are
open at the same time.
Close unused windows, then
try to open the needed
window again.
