IBM 7012 G Series, Service Manual

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Service Guide
D-26
Error Logging
When a failure occurs on a fan or on a power supply, the system produces a logging report
for this event. The logging report can be viewed using
errpt.
An errpt report about power and fan is the following:
LABEL: EPOW_SUS
Description: LOSS OF ELECTRICAL POWER
Probable Causes: POWER SUBSYSTEM
INTERNAL POWER UNIT
Failure Causes: POWER SUBSYSTEM
RECOMMENDED ACTIONS: CHECK POWER
POWER STATUS REGISTER:
9005 0007
The Power/Keylock Status Register has the following format:
PKSR Layout
0..3 4.6 7 8 9 10..13 14 15 16......23 24..27 28..31
Keylock position
Reserved for future use
Power fault and fan fault decode (R Series only)
Action bits for rc.powerfail
Battery backup Status (not used)
Battery backup plug (not used)
Power interrupt and fan fault decode (G Series and J Series only)
Cooling system operating in backup mode
Power system operating in backup mode
Power up decode
Power up decode
Bit Numbering
Power Interrupt and Fan Fault (G Series and J Series only)
Bits 0–3 values Description
0000 No Interrupt
0001 Running on battery
0010 Programmed Power Off
0011 manual switch off
0100 Remote power off
0101 Over temperature level 1
0110 Internal power supply failure
0111 Power supply overload
1000 Loss of Primary power (EPOW)
1001 Fan 1 fault