Avaya Definity SI Maintenance Manual page 1582

Maintenance Object Repair Procedures
Table 10-293. TEST #242 Expansion Interface Lightwave
Error
Code
10-796 Issue 4 May 2002
Transceiver Loop Around Test — Continued
Test
Result
PASS
NOTE:
If the Expansion Interface is a TN570 and the system
does not have the Packet Bus enabled field set to yes
on the Maintenance-related system parameters form,
then this test does not execute the packet bus portion of
the loop around.
When this test (#242) and the Expansion Interface Local Loop
Around Test #240 pass, this indicates that the Expansion
Interface circuit pack is functioning properly, but it does not
verify that the optical portion of the lightwave transceiver is
functioning properly. Remove the Expansion Interface circuit
pack from the busyout state using the release board PCSS
command.
1. If duplicate Expansion Interface Links are available, issue
the test board PCSS command on the Standby
Expansion Interface circuit packs on both ends of fiber. If
this test passes from both sides, but other tests fail, such
as Test #241, this condition indicates either a faulty
lightwave transceiver or a faulty fiber cable. To determine
if either a lightwave transceiver or the fiber itself has failed,
execute the Expansion Interface Manual Loop Back
Procedure described in the section preceding the
"Hardware Error Log Entries and Test to Clear Values"
table for this MO.
NOTE:
This test can only be run from both Expansion Interface
circuit packs if they are the Standby pair, and if the
Active pair is working properly.
2. If this Expansion Interface circuit pack is failing other tests,
the Expansion Interface Manual Loop Back Test should be
executed.
If problems still exist after the Expansion Interface Manual
Loop Back Procedure indicates that both Expansion Interface
circuit packs and both lightwave transceivers are healthy,
manually check out the building fiber. Verify that each optical
fiber is connected to a transmitter at one end and a receiver at
the other.
Description/Recommendation
Continued on next page
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