Avaya Definity SI, Maintenance Manual, Page: 2489 / 2968

TDM-BUS (TDM Bus)
Issue 4 May 2002 10-1703 555-233-123
In a High or Critical Reliability System
A less destructive procedure for processor complex circuit packs can be used
rather than the one described for standard systems. Perform the procedure on the
Processor Interface circuit pack and Network Control circuit pack before it is
attempted for any other processor complex circuit packs.
Pulling out processor complex circuit packs from the Standby SPE does not
require powering down the carrier and does not require starting the system again.
See
Chapter 6, ‘‘Reliability Systems: A Maintenance Aid’’ for more details.
1. Perform Procedure 2 for the suspected processor complex circuit pack in
the Standby SPE to determine if it is causing the TDM Bus problem. The
status system command indicates which SPE is in standby mode. If the
suspected circuit pack is the Tone-Clock circuit pack, make sure it is in
standby mode via the status system command or its LED state. The
SYSTEM CLOCKS and SYSTEM TONES fields of the status system form
should read “standby” or the yellow LED on the circuit pack is off.
NOTE:
When doing Procedure 2 as a request of Procedure 3, pull out
processor circuit packs instead of purple slot port circuit packs.
2. If it fails to identify the processor complex circuit pack as the cause of the
problem, perform an SPE switch via the reset system i command (see
Note).
NOTE:
Make sure that the current Standby SPE is in the standby mode via
the status system command before performing the SPE switch.
3. Perform Procedure 2 for the suspected processor complex circuit pack in
the new Standby SPE to determine if it is causing the TDM Bus problem.
4. If it fails again to identify the processor complex circuit pack as the cause of
the problem, perform Procedure 2 for the remaining processor complex
circuit packs.
5. If this procedure fails to identify the cause of the problem, go to Procedure
4.