1200-Watt AC-Input Power Supply Replacement Instructions 15
Checking the Installation
Checking the Installation
To complete the installation, turn the power supply on and observe its LEDs to verify that it is
operating properly.
Step 1
Review the descriptions of the power supply LEDs on page 4.
Step 2
Check the following components to make sure they are secure:
•
Each power supply is inserted all the way into its bay, and the captive installation screw
is tightened.
•
All power supply cables are attached to the power receptacles and secured with their
spring clips.
•
At the AC power-source end of the power cable, the cables are securely attached to the
AC power, the source power is within the range indicated on the power supply.
•
When two supplies are present, the second cable is connected to a separate AC power
source if possible.
Step 3
Remove the tape (that you applied earlier) from the circuit breaker switch handle and
restore power by moving the circuit breaker handle to the ON position.
Step 4
Turn the power supply ON (|) by turning the switch clockwise one-quarter turn. The AC
OK LED and the fan OK LED will go on and stay on. No other LEDs should go on.
If the power supply switch resists, it is probably not fully inserted into the bay. Turn the
power switch fully counterclockwise to OFF (O), pull the power supply out of the bay about
two inches, then push the power supply firmly back into the slot. Do not slam the supply
into the slot—doing so can damage the connectors on the supply and the backplane.
Tighten the captive installation screw before proceeding.
Step 5
Verify that the output fail LED stays off.
•
If the output fail LED goes on, move the power supply to the other bay if possible and
turn the power switch ON (|). If the LEDs go on properly when the supply is installed
in the other bay, suspect a faulty backplane power connector.
•
If the output fail LED goes on when the power supply is installed in the other bay,
suspect a power supply failure or an adverse environmental condition (the power supply
has detected an overvoltage or overtemperature condition and has shut down).
•
If two power supplies are installed, and the output fail LED goes on only on one power
supply, assume that the power supply or AC source (for that supply) is faulty.
•
If the output fail LED lights on two supplies that are connected to the same AC source,
suspect that the AC source is faulty, or that an overvoltage or overtemperature condition
is causing the power supplies to shut down.
•
If the output fail LED lights on two supplies that are connected to separate AC sources,
assume that an overvoltage or overtemperature condition is causing the power supplies
to shut down.
If the power supply fails to operate properly after several attempts to initialize it, contact a service
representative for assistance. If the power supply fails (and you need to order a replacement) and you
did not record the type of power supply in your chassis, you will have to check the chassis in order
to make this determination.
