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Table 635: Serial Bus Status Test (#1531) 3 of 4
Error
Code
Test
Result
FAIL
(cont’d)
Description and recommendation
Serial Bus Status Test (#1531)
Procedure 2: - This procedure attempts to isolate the Serial Bus failure
to a particular set of carriers. Only the circuit packs in selected carriers
are checked. Procedure 2 is organized into two parts. Part 1 attempts to
clear the Serial Bus fault by replacing all the bus cabling and terminators
within a port-network. Part 2 attempts to isolate the fault to a particular
carrier by extending the Serial Bus from the A carrier to additional
carriers one at a time.
WARNING: Power
Part 1:
! WARNING:
must be removed from the entire port network
before any cables or terminators are removed. Failure to
follow this procedure can cause damage to circuit packs
and power supplies, and can be hazardous to the
technician.
1. If spare TDM/LAN Cable assemblies and TDM/LAN Bus
Terminators are not available, go to Part 2 of this procedure.
2. Power down the port network.
3. Replace all of the TDM/LAN Cable Assemblies and both TDM/LAN
Bus Terminators.
4. Restore power to the port network.
5. Run list configuration power-supply C to determine if
the Serial Bus fault is still present.
6. If the Serial Bus fault is resolved, the procedure is completed.
Otherwise, go to Part 2.
Part 2:
1. Terminate the TDM/LAN Bus so that it extends only across the
carrier that contains the A carrier TN2312BP IPSI.
2. Determine if the Serial Bus fault is still present by running list
configuration power-supply C.
3 of 4
Communication Manager Release 5.0 Issue 4 January 2008 2033