ADTRAN Express 4100 - Manual (Page 131)

61200176L2-1 Express 4100/4110 User Manual 4-1
Chapter 4
Troubleshooting
When the Express 4100/4110 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 continuously flashes, the following steps will
verify whether or not the problem can be fixed locally.
1. Ensure the Express 4100/4110 is receiving power.
2. Power off the Express 4100/4110. Place switch 2 in the off position;
then power back up. This will reset all internal settings to their fac-
tory default.
3. If the Express 4100/4110 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 4100/4110 DOES NOT READ READY
When the Express 4100/4110 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:
1. Cycle power on the Express 4100/4110, leaving it off for a minimum
of two seconds; then turn the power on for one minute to ensure the
PWR LED still does not stay on.
2. Disconnect the Express 4100/4110. From a functioning voice phone,
call the local directory number(s) provided with your line. Calling a
good ISDN line with nothing connected usually results in a ring or