ADTRAN T200 H2TU-R, Руководство по установке и обслуживанию

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18 61222026L1-5, Issue 1 61222026L1-5A
7. TROUBLESHOOTING PROCEDURES
Table 8 is a troubleshooting guide for the T200
H2TU-R.
8. MAINTENANCE
The ADTRAN H2TU-R requires no routine
maintenance. In case of equipment malfunction, use
the faceplate Bantam jack connector 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. Refer to
Warranty and Customer Service
section of this Practice.
9. PRODUCT SPECIFICATIONS
Table 9 lists the H2TU-R specifications.
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.
Refer to
ADTRAN U.S. and Canada Carrier Networks
Equipment Warranty, document 60000087-10.
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 and Availability
(800) 827-0807
ADTRAN Technical Support
Pre-sales Applications/Post-sales Technical
Assistance (800) 726-8663
Standard hours: Monday-Friday, 7 am-7 pm 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
901 Explorer Boulevard
Huntsville, Alabama 35806-2807
Table 8. Troubleshooting Guide
Solution
1. Make sure the H2TU-R is properly seating in the housing.
2. Verify that the H2TU-C is delivering sufficient simplex voltage to the loop, if
line powered, or that a nominal -48 Vdc is being supplied, if local powered.
3. If steps 1 and 2 pass, replace the H2TU-R.
1. Verify that the loop conforms with CSA guidelines (not too long, etc.).
2. Verify that loop loss at 196 kHz is not greater than 35 dB.
3. Verify that noise on the HDSL2 loop is within acceptable limits.
4. If steps 1 through 3 pass and loop sync is still not available, replace the unit.
Condition
All Faceplate indicators are
Off .
Power is present and adequate,
but loop sync is not available
(DSL LED is
Off ).