Nortel Meridian 1 Planning, Installation And Operating Instructions page 508

Possible cause
Defective NTMW10 Fbr
Rcvr (Fiber Receiver)
card if affected card is
in Expansion cabinet
Option 11C Compact
Chapter 25 — Fault locating and clearing
Action
Replace the NTMW10 Fbr Rcvr.
Note: Call processing for the Expansion cabinet is interrupted
while the Fbr Rcvr card
Enable the fiber link by entering
LD 135
ENL FIL 1þ
If the fault remains replace the Fiber cable.
Enable the fiber link by entering
LD 135
ENL FIL 1þ
If the fault remains replace the NTDK22 Fiber Daughter Board on
the NTMW01 SSC circuit card.
Note: Reuse the Software Daughter Board and the other Fiber
Daughter Board, if equipped, attached to the original NTMW01 SSC
circuit card. Call processing on the entire system will be interrupted
while the NTMW01 SSC circuit card is unseated.
Enable the fiber link by entering
LD 135
ENL FIL 1þ
If the fault remains replace the NTMW01 SSC card.
—continued—
Planning, Installation, Fault Clearing and CCBR Guide
is being replaced.
Page 489 of 536