Nortel DMS-10 Series Installation, Operation And Maintenance Manual page 535

Procedure 6-29
Quad SIO PCA (NT6M60xx) Diagnostic
Step Description
138
Place the processor with the suspected faulty pack in the standby mode and repeat step
1. Put the other processor in the PRIME mode. The other processor is defined as that
processor that does not have the suspected faulty pack. At the Switch and Status panel of
the BMC:
• Press the A/B Select Switch to match the other processor.
• Press the O/P Mode Select Switch to P.
• Turn the Mode Switch to the right and release.
• BMC outputs message responses that indicate the processor switch activity. If there is no
communication to either Quad SIO PCA, go to step 6.
• If processor switch messages are observed, repeat step 1.
CAUTION
Loss of AMA can occur when the processors are switched during high
traffic.
139
Enter the following commands to test the affected processor:
>TEST (cr)
or
>DOS S TEST (cr)
If the Quad SIO fails, replace the Quad SIO PCA in the shelf that failed the test using the
procedure in the Hardware Replacement subsection. Then, proceed to step 5. If the TEST
response indicates the SIO passed, go to step 4.
140
Enter the following commands to reset the SIO Alarm:
>RSERR 00 (cr)
and/or
>DOS S RSERR 00 (cr)
System responds by clearing all alarms and the alarm light on the status panel goes out. If
the alarm returns, replace the Quad SIO PCA in the shelf that failed the test using the
procedure in the Hardware Replacement subsection. Then, proceed to step 5. If the alarm
stays clear, go to step 5.
BMC II BISYNC Operation, Administration, and Maintenance Guide BMCB001 and up
Section 060-INDP-610 Maintenance Procedures Guide 6-97
(Sheet 2 of 3)