Maintenance-Object Repair Procedures
555-233-143
8-488
Issue 1 May 2002
DAJ1 Local Loop Test
NOTE:
This test can only be run on demand on the standby media server and only if
it is busied out.
This test runs a local loop-around test on the DAJ1 board on the standby media
server. A 32-bit data number is written to an address and checked to see if the
data was transmitted correctly. It reads the contents of the last data received
registers, the last address and received register, then compares the data. If the
data matches the test passes, if not the test fails. The following errors can be
detected:
Table 8-196.
TEST DAJ1 Local Loop Test
Error Code
Test
Result
Description / Recommendation
Open failed to
MDD
ABORT
The MDD is the system driver that communicates with the DAJ1 board.
If the driver cannot be opened, then the DAJ1 board’s registers cannot
be read.
This is a system type error, try again.
System Error
MDD failed to
return data
ABORT
The test ran, but, for some reason the MDD could not return data.
This is a system type error, try again.
Loop-around
test failed
FAIL
The following reasons this test can FAIL will be displayed if the test is
being run on demand:
“Loop-around test failed”: Either, last address received does not match
the address that was written or last data received does not match the
data that was written.
Continued on next page
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 ...