Step 1
If:
an uninterruptible power source (UPS) is installed,
the system is not receiving power,
and the LEDs on the power distribution bus (PDB) are off,
then unplug the customer's power cable from the UPS, and then plug the customer's
power cable into the PDB.
Are the LEDs on the PDB on?
NO Check the customer's power cable for continuity from the wall outlet to the
PDB or UPS, and then go to Step 2.
YES
1. Replace the UPS if necessary. Refer to the maintenance and
diagnostic information in the service guide for the uninterruptible
power source installed in your rack.
2. Go to Step 10.
Step 2
(from Step 1)
The green LEDs located on the power distribution bus indicate that power is supplied
from the customer's outlet, through the customer's power cable, and to the power
distribution bus.
Are all of the LEDs on the power distribution bus on?
NO Check the customer's outlet for the correct voltage, and then check the
customer's power cable for continuity. If both are correct, exchange the
power distribution bus, and then go to Step 10.
YES Go to Step 3.
Chapter 5. Maintenance Analysis Procedures (MAPs) 5-11
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