HP Surestore Disk Array 12h - And FC60 Service Manual page 276

Table 37 Master Troubleshooting Controller Enclosure Master Troubleshooting Table (cont'd)
Symptom
Controller enclosure
and Fan Fault LED
(front cover) are on
Midplane
Power LEDs (front and
power supply FRUs)
are ON but all other
Power LEDs are off
Controller Enclosure Troubleshooting
276
Possible Cause
Controller enclosure fan
failure caused one or both
controller(s) to overheat
Other FRUs are missing or
not installed correctly.
Defective DC power
harness or power interface
board.
Failed controller enclosure
midplane.
Procedure
1. Stop all activity to the controller module
and turn off the power.
2. Replace the failed controller enclosure
fan module.
3. Allow the controller to cool down, then
turn on the power.
4. Check both controllers for fault LEDs. If a
Controller Fault LED is on, replace the
failed controller.
Check all FRUs in the controller enclosure
and make sure they are installed securely. If
this does not solve the problem, go to cause
B.
Replace the DC power harnesses and the
power supply assembly. If this does not
solve the problem, go to cause C.
Replace the controller enclosure midplane.