Maintenance-Object Repair Procedures
555-233-143
8-1034
Issue 1 May 2002
PN Maintenance Circuit Pack Sanity Maze
Test (#303)
The processor on the PN’s Maintenance circuit pack has direct access to special
registers in the Maintenance circuit pack. These registers are tied to such things
as the Expansion Interface circuit pack reset leads and Carrier Port Power Unit
reset leads (which enable the PN’s Maintenance circuit pack to recycle carriers).
To prevent an insane Maintenance circuit pack from inadvertently controlling
these external devices, a special interface called the Sanity Maze is provided that
must first be navigated by the Maintenance circuit pack processor prior to any
register access. There are two parts to the test. Part 1 involves navigating the
Sanity Maze to toggle an unused lead. Part 2 attempts to toggle an unused lead
without first navigating the Sanity Maze. The Sanity Maze test passes if Part 1 is
successful and Part 2 fails.
Table 8-409.
Test #303 PN’s Maintenance Circuit Pack Sanity Maze Test
Error
Code
Test
Result
Description / Recommendation
1000
ABORT
System resources required to run this test are not available.
2000
ABORT
Response to the test was not received within the allowable time period.
2033
ABORT
1. Retry the command at 1-minute intervals up to 5 times.
FAIL
The Sanity Maze of the PN’s Maintenance circuit pack is defective.
1. Replace the PN’s Maintenance circuit pack.
PASS
The Sanity Maze is working properly, and the PN’s Maintenance circuit pack
can access the unused register. If recycle carrier commands (for PN carriers)
do not work, the following problems may still exist:
1. The Carrier Port Power Unit or wiring to the Carrier Port Power Unit may
‘‘CARR-POW (Carrier Power Supply)’’ on page 8-393
2. Since this test only tests the PN, there is a very small probability that the
PN’s Maintenance circuit pack cannot access those registers that deal with
PN devices. The Maintenance circuit pack may need to be replaced.
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...