HP ProDesk 400 G1 Micro Maintenance and Service Guide ProDesk 400 G1 Microtowe - Page 144
Expansion cards, Remove the fan duct from the chassis
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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 only in models in the People's Republic of China with NetClone (includes thermal material) Spare part number 718414-001 718414-501 718414-601 745239-001 1. Prepare the computer for disassembly (Preparation for disassembly on page 92). 2. Remove the access panel (Access panel on page 93). 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 97) ● Expansion cards (Expansion card on page 100) ● Fan sink (Fan sink on page 130) ● Processor (Processor on page 132) 4. Remove the fan duct from the chassis (Fan duct on page 121). 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 that secure the system board to the chassis. 134 Chapter 6 Removal and replacement procedures: Small Form Factor