IBM 3745 Problem Determination Manual page 60

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ALARM BC: SWITCHBACK OR IPL COMPLETE WITH ERRORS CCU-x hhmmss ref code
Cause: CCU
Main storage
Non-disruptive errors occurred during the switchback or during the IPL following the
switchback. The 3745 is running, but with some restrictions.
Action:
co
and give reference code.
ALARM BD: SWITCHBACK OR IPL FAILED CCU-x
Cause: CCU
Action:
Main storage
Processor switch
co
and give reference code.
• Re-I PL the other CCU.
ALARM
co:
CONCURRENT MAINTENANCE ON CAxx: IN PROGRESS
Cause:
Action:
Service personnel entered concurrent maintenance.
No action required.
ALARM C1: CONCURRENT MAINTENANCE ON CA xx: COMPLETE
hhmmss ref code
hhmmss ref code
hhmmss ref code
Cause:
Action:
Concurrent maintenance on channel adapter xx successfully completed.
No action required.
Chapter 1. Alarms and Alerts
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