HP Surestore Disk Array 12h - And FC60, Service Manual, Page: 573 / 746

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