5 – Diagnostics/Troubleshooting
Power Supply Diagnostics
5-12 59265-00 A
S
Power Supply Diagnostics
A power supply has a Status LED (Green) and a Fault LED (Amber) as shown in
Figure 5-3. Under normal operating conditions, the Power Supply Status LED is
illuminated and the Power Supply Fault LED is extinguished.
Figure 5-3 Power Supply LEDs
Consider the following indications:
All power supply LEDs are normal, yet the System Fault LED is illuminated
and the Heartbeat LED does not show a blink pattern. This means that the
two power supplies have different air flow directions. Replace the power
supply with the incorrect air flow direction with another having the correct air
flow direction. Air flow direction is marked on the power supply part number
label. Refer to “Power Supply Removal and Replacement” on page 6-2.
Power Supply Fault LED is illuminated. This means that the power supply is
failing or has failed. Replace the power supply with another having the same
air flow direction. Air flow direction is indicated on the power supply part
number label. Refer to “Power Supply Removal and Replacement” on
page 6-2.
Power Supply
Status LED
Power Supply
Fault LED
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