HP EliteDesk 800 Maintenance and Service Guide - HP EliteDesk 800 G1 Tower, HP - Page 133

Power supply Description Power supply, 92% efficient Power supply, 90% efficient Power supply, standard Spare part number 702455-001 702456-001 702457-001 WARNING! To reduce potential safety issues, only the power supply provided with the computer, a replacement power supply provided by HP, or a power supply purchased as an accessory from HP should be used with the computer. The power supply is located at the rear of the chassis. It is held in place by three Torx screws outside of the chassis and a release lever inside of the chassis. WARNING! Voltage is always present on the system board when the computer is plugged into an active AC outlet. To avoid possible personal injury and damage to the equipment the power cord should be disconnected from the computer and/or the AC outlet before opening the computer. 1. Prepare the computer for disassembly (Preparation for disassembly on page 94). 2. Remove the access panel (Access panel on page 95). 3. Rotate the drive cage to the upright position. 4. Disconnect all power cables from the following system board connectors: ● PWRCPU ● PWRCMD ● PWR Power supply 121