Bull 296/C3, Manual, Page: 82 / 123

Replacing a Power Supply with the System Power Off
Before performing the following procedure, read and understand all of the safety notices beginning with
“Safety Notices” on page vii.
Notes:
1. Do not connect the power cables to the power source until you are instructed to do so.
2. During normal operation, the secondary power-supply bay must have either a power supply or filler
panel installed for proper cooling.
To replace a power supply, do the following:
1. Ensure the system is in the service position as described in “Placing the 296/C3 into the Service
Position” on page 6 or “Placing the 296/E3 into the Service and Operating Position” on page 7.
2. Ensure the service access cover has been removed as described in “Removing the 296/C3 Service
Access Cover” on page 12 or “Removing the 296/E3 Service Access Cover” on page 13.
3. Grasp the power supply handles located on top of the new power supply. Pivot the power supply
handles upward to 90 degrees. This action puts the handle cams into the correct position to help seat
the power supply into its connector.
4. Carefully insert the new power supply into the power supply bay.
5. Lower the power supply handles, carefully pressing the power supply into the connector. The spring
latch located on the underside of each handle will snap into place, indicating that the power supply is
seated correctly and locked into position.
1
2
3
4
5
6
1 Power supply 4 Fault LED (Amber)
2 Power supply handle (2) 5 DC Good LED (Green)
3 Spring Latch (2) 6 AC Good LED (Green)
6. Plug the power cables into the rear of the power supply.
7. Note the state of the LEDs on the top of the power supply. If the LEDs indicate the power supply is
operating normally, continue to the next step. If not, remove the power supply from the system and
repeat the procedure starting with step 3. If, after repeating the procedure, the power supply in not
operating normally, contact your service representative.
8. Replace the service access cover as described in “Replacing the 296/C3 Service Access Cover” on
page 12 or “Replacing the 296/E3 Service Access Cover” on page 13.
If you are working on a 296/E3, go to step 10 on page 67.
If you are working on a 296/C3, continue to the next step.
9. Ensure the system cables are routed through the cable-management arm correctly.
66
296/C3 and 296/E3 Parts Guide