EXFO IQS-9100B Optical Switch for IQS-500/600 - Manual (Page 65)

Optical Switch 59
7 Troubleshooting
Solving Common Problems
Problem Possible cause Recommended action
LED push button does not
light up.
Power not on. Check AC power cord and
turn on the unit.
Module is not properly
inserted.
Turn off the unit, then
remove and reinsert the
module.
Computer is locked
up.
Reboot the unit.
LED is burnt. Call EXFO.
Pushing the LED push
button does not open the
module main window.
Computer is locked
up.
Reboot the unit.
Impossible to open a
window.
Too many windows
are open at the same
time.
Close unused windows,
then try to reopen the
window.
Insertion loss higher than
expected.
Dirty optical
connectors.
Clean all optical
connectors.
Improper wavelength
selected on other
instruments
Switch to the correct
wavelength on all
instruments being used.
Poor repeatability. Optical source is
unstable.
Wait for source to stabilize.
— Select Optimize for
Repeatability.
No optical continuity. Switch is off. Set the Continuity switch
to On.