Chapter 3. Replace power supply in iSeries 820 or 5075, 5095,or 0595 expansion unitTo perform this procedure with the system powered on, you must have thefollowing:v Three power supplies and two working air moving devices for the 820 systemv Two power supplies and two working air moving devices for the 5075 expansionunitv two power supplies and four working air moving devices for the 5095 or 0595expansion unitIf you need to replace an air moving device, go to Chapter 6, “Replace the airmoving device,” on page 13.To replace the power supply, perform these tasks:Note: The figures in these instructions may not look exactly like the server thatyou have. However, the steps to perform the task are the same.__ 1. Perform prerequisite tasks as described in Chapter 2, “Before you begin,” onpage 3.__ 2. Power down the system. For instructions, refer to “Power down the system”on page 23.__ 3. Remove the back cover. Refer to “825 back cover” on page 20.__ 4. Remove the left side cover (viewed from back).__ 5. Locate the power supply to be replaced. Refer to “Locations” on page 27.__ 6. Pull the handle on the power supply.__ 7. Support the bottom of the power supply as you slide it out of the unit.__ 8. Follow the steps in “Details: Install power supply in iSeries 820 or 5075,5095, or 0595 expansion unit” on page 11 to install the new power supply.© Copyright IBM Corp. 2000, 2005 5