IBM 3531 manual Working with cards and boards, Installing a hot-swap power supply / fan unit

1

6

Installing a hot-swap power supply / fan unit

Complete the following steps to install a hot-swap power supply:

1.Ensure that the power supply you are installing is turned off.

2.Grasp the handlesÞ Ýand slide the power supply into the expansion unit.

3.Tighten the power supply thumbscrews Þ Ý.

4.Connect the power cord to the power supply.

5.Plug the supply power cord into a properly grounded electrical outlet.

If you just installed a second (redundant) supply, the fault (amber) LED will light because its power switch is turned off.

6.Turn on the power supply.

If you just installed a second (redundant) supply, after you turn on the power, the fault (amber) LED will turn off and the ac and dc power (green) LEDs will turn on.

Working with cards and boards

Before you begin

•Read the safety and handling guidelines provided in “Safety information” on page 41 and "Handling electrostatic discharge-sensitive devices."

•Ensure that your current system configuration is working properly.

•Back up all important data before you make changes to storage devices, such as hard disk drives.

The expansion unit bridge card, switch card, and ESM boards are customer replaceable units (CRUs). This section contains step-by-step instructions for removing and replacing each device.

Replacing a bridge card

To replace the bridge card CRU in the EXP300 expansion unit, follow the instructions for removing the bridge card and installing a bridge card.

22IBM Netfinity EXP300 - Type 3531 Hardware Maintenance Manual