Adtran T1 CSU ACE Benutzerhandbuch
Chapter 3. Troubleshooting and Maintenance
36
T1 CSU ACE User Manual
61202022L1-1B
Equipment LOS
Condition: EQ LOS LED is illuminated.
1.
Verify that the cable from the CPE is in the
CPE
modular jack on
the bottom/end of the CSU ACE.
2.
If all connections seem intact, use a BERT test set in the
NET IN
and
NET OUT
jacks to test the CPE.
Power On - Self Check Failure
Condition: NET LOS, EQ LOS, NET LB, and EQ LB all flash in uni-
son, continuously.
son, continuously.
•
The unit has failed its internal self check. Return the unit to the
ADTRAN Customer and Product Service (CAPS) Department as
instructed on page 12.
ADTRAN Customer and Product Service (CAPS) Department as
instructed on page 12.
EPROM Checksum Failure
Condition: NET LOS and EQ LOS Flash alternately with NET LB
and EQ LB for the first 10 seconds after power up.
and EQ LB for the first 10 seconds after power up.
•
The unit’s EPROM has a bad checksum. Return the unit to the
ADTRAN CAPs Department as instructed in the Product Support
page on the back page of this manual.
ADTRAN CAPs Department as instructed in the Product Support
page on the back page of this manual.
MAINTENANCE
The T1 CSU ACE requires no routine maintenance. No repairs should
be performed by the customer. Repair services can be obtained by re-
turning the unit to the ADTRAN Customer and Product Service
(CAPS) department as instructed on page 12.
be performed by the customer. Repair services can be obtained by re-
turning the unit to the ADTRAN Customer and Product Service
(CAPS) department as instructed on page 12.