PI-SCI (System Communication Interface)
Issue 4 May 2002
10-1255
555-233-123
Notes:
a. An error occurred during a hot start processor element interchange that
caused the associated Processor Interface links (BX.25 and/or ISDN-PRI)
to go down temporarily. If these errors reoccur and there are no other
errors against PI-BD or PI-SCI, resolve the other alarm first.
b. This error indicates a possible hardware failure on the TN765 Processor
Interface circuit pack. If the error persists, and the SCI is unstable (resets
often), type in test interface PCS long command. The Processor Interface
firmware is redownloaded if the checksum fails. If the problem still exists,
automatically redownload the Processor Interface firmware by typing reset
interface PCS. If this doesn’t work, then replace the TN765 Processor
Interface circuit pack. These errors also raise alarms against the PI-BD
(Processor Interface Circuit Pack).
NOTE:
To replace an SPE complex circuit pack in a Duplication Option System
follow the procedures in
Chapter 6, ‘‘Reliability Systems: A Maintenance
. For a Non-Duplication Option System follow procedures in
‘‘Routine Maintenance Procedures’’
for instructions on how to replace the
Processor circuit pack (TN786 or TN2404/TN790).
Use the following steps for G3i-386 and later systems where the Processor
Interface firmware resides in the flash ROM memory in the Processor
circuit pack (i.e. TN786 or TN2404/TN790) instead of Tape as in G3i-286. If
the firmware can't be successfully downloaded into the Processor Interface
circuit pack after entering the “reset interface PCS” command, then use the
following steps:
1. Replace the TN765 Processor Interface circuit pack:
2. After the new TN765 Processor Interface circuit pack has been
inserted successfully, enter “test interface PCS long” command to
verify the results of tests.
If the error still indicates the failure for downloading the firmware into
Processor Interface circuit pack, then it's possible that the firmware
stored in the Processor circuit pack (TN786 or TN2404/TN790) is
corrupted.
2055
The checksum of the PI memory was not able to be retrieved.
2056
The PI was not able to be put into a stable state such that the switch
to the new active PI failed to keep the existing PI links up.
2057
The active PI was unable to copy the image of its memory to the
standby PI.
2058
System software error.
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...