IBM 887022X Maintenance Manual - Page 94

Removing and replacing a hot-swap power supply The two hot-swap power supplies in the server can be removed and replaced without turning off the server. This section provides instructions for removing and installing the hot-swap power supplies.The following notes and safety information contains information you must consider when removing or installing a hot-swap power supply: v During normal operation, both power supplies must be installed for proper operation and cooling. v The xSeries 445 server requires a 220 V power connection for full power-supply redundancy. Whenever possible, use a 220 V connection for all configurations. However, you can use a 110 V connection, but without power-supply redundancy. v If the server power supplies are not running redundantly, a power supply LED will be lit on the Light Path panel (see "Light path LED errors" on page 190). Statement 8 CAUTION: Never remove the cover on a power supply or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician. Power light Power-on light Power button Reset button Power supply 1 Power supply 2 Power supply latch Handle Figure 32. Hot-swap power supply Complete the following steps to remove and replace a power supply: 1. Review the information in "Installation guidelines" on page 79 and "Safety information" on page 257. 84 xSeries 445 Type 8870: Hardware Maintenance Manual and Troubleshooting Guide