Power off the printer and unplug the power cord. Loosen the 5 screws securing the front cover of the fan shroud using a Phillips screwdriver.
Remove the fan shroud's front cover and the filter cartridge.
Unplug the ribbon cables of the auxiliary cooling fan.
Loosen the two screws securing the multi-color connector using a 2.0 mm Allen key, then remove connector.
Loosen the 12 screws securing the back cover of the printer using a 2.0 mm Allen key, then remove the back cover.
Note: Screw holes labeled by the red circle are M3*4, while screw holes labeled by the yellow circle are M3*8.
Loosen the 2 screws securing the auxiliary cooling fan using a Phillips screwdriver, then remove the auxiliary cooling fan.
Note: Hold the auxiliary cooling fan to prevent it from falling while loosening the last screw.
Prepare the new auxiliary cooling fan. Put the auxiliary cooling fan in the installation position by aligning it with the screw holes. Use a Phillips screwdriver to tighten the 2 screws securing the auxiliary cooling fan.
Insert the ribbon cables of the auxiliary cooling fan into the adapter board port.
Put the back cover in the installation position by aligning it with the screw holes. Tighten the 12 screws securing the back cover using a 2.0 mm Allen key.
Note: Screw holes labeled by the red circle are M3*4, while screw holes labeled by the yellow circle are M3*8.
Put the multi-color connector in the installation position by aligning it with the screw holes. Tighten the 2 screws securing the multi-color connector using a 2.0 mm Allen key.
Put the filter in the installation position.
Put the front cover of the fan shroud in the installation position by aligning it with the screw holes. Use a Phillips screwdriver to tighten the 5 screws securing the front cover of the fan shroud.
Insert the power cord and power on the printer. Navigate to "Function - Fans - Auxiliary Cooling Fan" on the touchscreen.
The printer can be used as usual after the fan rotates normally.