3 loopback diagnostic procedure – CANOGA PERKINS 2262 T1/E1 Fiber Optic Modem User Manual
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2262 T1/E1 Fiber Optic Modem
Canoga Perkins
4.2.3 Loopback Diagnostic Procedure
Symptom
Step
Possible Cause
Remedy
Set loopback switch
1
Local data source failed.
Correct the local data
to local mode and
source.
error is not corrected.
Disable loopback
2
Unit failed.
Return to factory for
function and use
repair.
plastic loopback
rod (for multimode)
or short length of
optic cable (for single
mode) to loop the
local optic interface
when error is not
corrected.
Set loopback switch
3
Bad optic link.
Repair the bad fiber
to remote mode and
optic cables.
error is not corrected.
All above steps are
4
Remote system failed.
Correct the remote
unable to correct
system.
errors.
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