Maintenance-Object Repair Procedures
555-233-143
8-696 Issue 1 May 2002
8. Remove the DS1- CONV
hardware
Remove the 4 TN574 or TN1654 DS1-CONV circuit
packs and Y-cables.
NOTE:
The TN1654 and TN574 DS1-CONV boards
use unique “Y” cables that are incompatible
with each other. Reuse these cables only
with the proper circuit pack.
9. Install Fiber-Optic Cable Add the lightwave transceivers (multimode 9823A or
single-mode 300A) to match the lightguide fiber.
Add these to the EIs and SNIs formerly connected to
the DS1 CONV circuit packs. Connect the lightwave
transceivers with appropriate lightguide fiber.
10. Check fiberoptic cable
connections
Ensure that the fiberoptic cables are securely
connected to the lightwave transceivers that are
attached to the designated circuit packs through the
connections behind the cabinet.
11. add fiber-link n Administer the new EI/SNI fiber connection
12. change
system-parameters
duplication
Enable PNC duplication by changing the Enable
Operation of PNC Duplication? field to y.
13. Enter test alarms long
clear for category exp-intf.
14. Wait 5 minutes SNI-BD, SNI-PEER, FIBER-LK and EXP-INTF MOs
need time to clear (or enter clear
firmware-counters a-pnc or b-pnc)
15. Enter status pnc If either PNC’s state of health is not
functional,
consult the PNC-DUP MO.
Table 8-269. Convert from DS1-CONV to direct-connect fiber in a
duplicated PNC — Continued
÷ # Command/Step Description
Continued on next page
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