HP EliteDesk 800 Maintenance and Service Guide - HP EliteDesk 800 G1 Tower, HP - Page 150

System board Description System board for use in models without Windows 8 (includes thermal material) System board for use in models with Windows 8 Standard (includes thermal material) System board for use in models with Windows 8 Professional (includes thermal material) System board for use in models with NetClone (includes thermal material) Spare part number 717522-001 717522-501 717522-601 727722-001 1. Prepare the computer for disassembly (Preparation for disassembly on page 94). 2. Remove the access panel (Access panel on page 95). 3. When replacing the system board, make sure the following components are removed from the defective system board and installed on the replacement system board: ● Memory modules (Memory on page 100) ● Expansion cards (Expansion card on page 103) ● Fan sink (Fan sink on page 135) ● Processor (Processor on page 136) 4. Remove the fan duct from the chassis (Fan duct on page 124). 5. Rotate the drive cage to its upright position. 6. Disconnect all data and power cables from the system board. 7. Remove the eight Torx screws (1) that secure the system board to the chassis. 138 Chapter 6 Removal and replacement procedures: Small Form Factor (SFF)