3 loopback diagnostic procedure – CANOGA PERKINS 2262 T1/E1 Fiber Optic Modem User Manual

Page 19

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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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