HP Surestore Disk Array 12h - And FC60 Service Manual page 244

Table 31 Controller Enclosure Troubleshooting Flowchart (Sheet 4 of 5)
Inspect both power
supply module power
LEDs.
Power Supply A
power LED on?
Yes
Power Supply B
power LED on?
Yes
Check that each power supply is well seated in the
midplane by firmly pushing the supply into its slot. Do
not pull a power supply out of the array enclosure with
a Front Panel Power FAULT condition unless you
know the remaining supply in the array is functioning.
CAUTION:
If a supply is unseated and its the only remaining
functioning supply the array enclosure will abruptly
power down!
Controller Enclosure Troubleshooting
244
D
Is the
FRONT COVER
Yes
Power Supply Fault LED
on?
Yes
No
Possible Causes:
1. Power Switch on this supply is OFF.
2. No input power to supply.
3. Power Supply Module has failed.
No
No
Is the
FRONT COVER
No
power supply Fault
LED on?
No
Fixed? Yes
Yes
Fixed?
No
Possible causes:
1. Possible Midplane
2. Power supply to Midplane
Connector damage
Go to
A
Yes
Fixed?