58 Aspire Z1650 AIO Computer Service Guide
2. Tighten the four screws (UMA models) or six screws (Discrete models) to secure the heat sink to the
mainboard.
NOTE: Shown with Discrete model in above image. UMA models does not contain the heat sink part
highlighted in yellow rectangle.
Replacing the System Fan
1. Position the system fan in the rear cover assembly.
Quantity Color Torque
4 (UMA) Chrome 4.5 ± 0.3 kgf.cm
6 (Discrete) Chrome 4.5 ± 0.3 kgf.cm