Chapter 4 Troubleshooting; If Self-Test Fails; If The Express L128T S/T Does Not Read Ready - ADTRAN Express L128T S User Manual

Chapter 4
When the Express L128T S/T powers up, it performs an internal self-
test. This takes about 10 seconds. At the end of the test, the PWR LED
should flash.

IF SELF-TEST FAILS

If the PWR LED is not on or does not flash after power-up, the follow-
ing steps will verify whether or not the problem can be fixed locally.
1. Ensure the Express L128T S/T is receiving power.
2. Power off the Express L128T S/T. Place switch 2 in the off posi-
tion; then power back up. This will reset all internal settings to
their factory default.
3. If the Express L128T S/T still does not pass self-test, call ADTRAN
Technical Support for assistance. See the inside back cover of this
manual for information on contacting ADTRAN.
IF THE EXPRESS L128T S/T DOES NOT READ
READY*
*For switch types other than Lucent 5ESS, the central office
switch may deactivate the line if no calls are active. Placing or
receiving a call will activate the line, causing the PWR LED
to turn on solidly.
When the Express L128T S/T has been set up and connected to a line,
but the PWR LED does not remain on after a few minutes, proceed
with the following steps:
61202070L3-20
Troubleshooting
Express L128T S/T User Manual 4-1