HP Surestore Disk Array 12h - And FC60 Service Manual page 573

Symptom
No power to the controller
module (all Power LEDs
off)
One Power Supply LED
(FRU) is on and the other is
off
Power Supply LED (front
cover) is on
The LEDs ON both power
supply modules are on but
all other LEDs are off.
Possible Cause
Power switches are turned
off.
Power cords unplugged.
Power supply modules
overheated or failed.
A Power supply module is
turned off or unplugged.
Power supply module
B is
overheated or failed.
A Power supply module is
missing or not plugged
in properly.
B Power supply module is
overheated or failed.
A Defective DC power
harness
B Defective Power
Interface Board
Procedure
Turn on both power switches on the
controller enclosure.
Turn on the main circuit breakers in the
rack, if applicable.
Make sure all power cords are plugged in
securely.
Lower the room temperature if it is too high,
unblock enclosure vents if they are
obstructed, replace any failed fans in the
enclosure, or replace the power supply
module.
Plug in the power cord and turn on the
power switch. If the LED remains off, go to
cause B.
Lower the room temperature if it is too high,
unblock enclosure vents if they are
obstructed, replace any failed fans in the
enclosure, or replace the power supply
module.
Insert and lock the power supply module
into place. If the Fault LED is still on, go to
cause B.
Lower the room temperature if it is too high,
unblock enclosure vents if they are
obstructed, replace any failed fans in the
enclosure, or replace the power supply
module.
– Replace the DC power harnesses. If this
does not resolve the problem, go to
cause B.
– Replace the power supply (see
Interface Board" on page
"Power
578).
573