The power supply takes a supplied -50VDC and converts the power to 12 VDC main power and 3.3 VDC standby power. The two power supplies are located at the rear of the chassis, on the left side. See Power Supply, Hard Drive, and Fan Module Locations. Fans within the power supplies draw air from the chassis interior and expell the air out the rear of the chassis.
These topics describe service information and procedures for the power supply.