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PSU & Built-in Cooling Module LEDs
The PSU (Power Supply Unit) contains the LEDs for the PSU and the cooling module
statuses. When either of the unit fails, you need to replace the PSU as soon as
possible. For details, please refer to
Replacing the Power Supply Module
.
PSU & Cooling Module Status LED (1)
Status
Description
Flashing (
Green
)
The system is connected to power supply but the power
switch has not turned on.
On (
Green
)
The PSU / cooling module is operating normally.
On (
Amber
)
The PSU / cooling module is faulty.
WARNING
HAZARDOUS MOVING PARTS!
KEEP FINGERS AND OTHER BODY PARTS AWAY!
Alarms and I
2
C Bus
Other monitoring schemes include audible alarms and I
2
C bus.
Audible Alarms
If any of the following components fails, the audible alarm will be triggered:
Cooling fan modules
PSU modules
CBM module
Hard disk drives
Sensors or presence detection circuitries
