12. Lower and position the heat sink fan duct on the top of the heat sink and fan assembly until it snapsinto position.Figure104. Installing the heat sink fan ductWhat to do next:• To work with another piece of hardware, go to the appropriate section.• To complete the installation or replacement, go to “Completing the parts replacement” on page 186.Replacing the power supply assemblyAttention:Do not open your computer or attempt any repair before reading and understanding the “Important safety information”on page 1.This section provides instructions on how to replace the power supply assembly.Although there are no moving parts in your computer after the power cord has been disconnected, thefollowing warnings are required for your safety and proper Underwriters Laboratories (UL) certification.CAUTION:Hazardous moving parts. Keep fingers and other body parts away.160 ThinkCentre M73 Hardware Maintenance Manual
