Packet Bus Fault Isolation and Correction
555-233-123
9-34
Issue 4 May 2002
2. Determine if the Packet Bus fault is still present. If so, and if there are
shorts on the Packet Bus, perform Procedure 2 and/or Procedure 3 for only
the circuit packs in those carriers that are connected to the ‘‘shortened’’
Packet Bus. (Procedure 2 is performed for port circuit packs, and
Procedure 3 is performed for processor complex circuit packs.)
3. If the Packet Bus fault is not present, extend the Packet Bus to another
carrier, and repeat the procedure in the previous step. When a carrier that
causes the fault to recur is added, and if there are shorts, perform
Procedure 2 and/or Procedure 3 for only the circuit packs in that carrier.
4. If the Packet Bus fault recurs as the Packet Bus is extended, and if
Procedures 2 and 3 (if performed) do not resolve the problem, the added
carrier(s) that caused the problem to recur are defective and must be
replaced.
Other Port Networks:
1. Terminate the Packet Bus so that it extends only from the carrier that
contains the Active Expansion Interface to the nearest carrier that contains
the Maintenance/Test circuit pack. Place the Maintenance/Test circuit pack
into a carrier that contains an Expansion Interface circuit pack in order to
allow the procedure to isolate the failure to the smallest possible number of
carriers.
2. Determine if the Packet Bus fault is still present. If so, and if there are
shorts on the Packet Bus, perform Procedure 2 and/or Procedure 3 for only
the circuit packs in those carriers that are connected to the ‘‘shortened’’
Packet Bus.
3. If the Packet Bus fault is not present, extend the Packet Bus to another
carrier, and repeat the procedure in the previous step. When a carrier that
causes the fault to recur is added, and if there are shorts, perform
Procedure 2 and/or Procedure 3 for only the circuit packs in that carrier.
4. If the packet bus fault recurs as the packet bus is extended, and if
Procedures 2 and 3 (if performed) do not resolve the problem, the added
carrier(s) that caused the problem to recur are defective and must be
replaced.
Summary of Contents for Definity SI
Page 1: ...0DLQWHQDQFH IRU YD D 1 7 6HUYHU 6 Volumes 1 2 and 3 555 233 123 Issue 4 May 2002...
Page 62: ...Maintenance Architecture 555 233 123 1 26 Issue 4 May 2002...
Page 92: ...Management Terminals 555 233 123 3 26 Issue 4 May 2002...
Page 204: ...Routine Maintenance Procedures 555 233 123 5 100 Issue 4 May 2002...
Page 250: ...LED Interpretation 555 233 123 7 10 Issue 4 May 2002...
Page 2804: ...Maintenance Object Repair Procedures 555 233 123 10 2018 Issue 4 May 2002...