ADTRAN DE-4E - Manual (Page 14)

14 Section 61245207L2-5, Issue 3 61245207L2-5C
7. MAINTENANCE
The ADTRAN FT1 DP requires no routine
maintenance. In case of equipment malfunction, use
the features supplied with the FT1 DP to help locate
the source of the problem.
ADTRAN does not recommend that repairs be
performed in the field. Repair services may be
obtained by returning the defective unit to the
ADTRAN Customer Service RMA Department.
8. TROUBLESHOOTING PROCEDURES
Use Table 7 to troubleshoot the FT1 DP.
9. PRODUCT SPECIFICATIONS
Specifications for the FT1 DP are provided in
Table 8.
10. WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within 10
years from the date of shipment if it does not meet its
published specifications or fails while in service (see
ADTRAN Carrier Networks Equipment Warranty,
Repair, and Return Policy and Procedure, document
60000087-10A).
Condition Solution
All front panel indicators are off. 1. Verify that the FT1 DP is properly seated in the housing.
2. Make sure power supply feeding the FT1 DP is good.
3. If Steps 1 and 2 pass, replace the FT1 DP.
Power OK but does not achieve Loop Sync (DSL LED is off). 1. Verify that the loop conforms with CSA guidelines
(not too long, etc.).
2. Verify that the Loop Loss at 200 kHz is not greater
than 36 dB.
3. Verify that noise on the DSL Loop is within acceptable
limits.
4. If Steps 1 through 3 pass and Loop Sync is still not
available, replace the unit with an FT1 DP unit known to be
in good working condition.
Table 7. Troubleshooting Guide
Contact Customer and Product Service (CAPS) prior
to returning equipment to ADTRAN.
For service, CAPS requests, or further information,
contact one of the following numbers:
ADTRAN Sales
Pricing/Availability
(800) 827-0807
ADTRAN Technical Support
Presales Applications/Postsales Technical Assistance
(800) 726-8663
Standard hours: Monday-Friday, 7 a.m. - 7 p.m. CST
Emergency hours: 7 days/week, 24 hours/day
ADTRAN Repair/CAPS
Return for Repair/Upgrade
(256) 963-8722
Repair and Return Address
ADTRAN, Inc.
CAPS Department
901 Explorer Boulevard
Huntsville, Alabama 35806-2807