Acer AW2000h-AW170h - Manual (Page 54)

3 System upgrades 38
Removing the air duct
1 Perform the pre-installation instructions described on page 24.
2 Lift the air duct from the chassis.
Replacing a system fan
The system has a total of four high-performance fans to provide the
cooling for the system. Fan speed may be controlled by a setting in
BIOS (see Chapter 4).
To replace a fan module:
1 Perform the pre-installation instructions described on page 24.
Warning! The system fan becomes very hot when the system is on.
Allow it to cool off first before handling.
2 Remove the top chassis cover while the system is still running to
determine which of the fans has failed.
3 Remove the fan module.
(1) Disconnect the fan cable.
(2) Pull up the fan module and detach it from the chassis.