1.6 Waterproof filter
1.Refer to 1.1 remove front panel and back panel
2.Refer to 1.2 remove electrical box cover
3.Refer to 1.3 remove up-fan duct.
4.Refer to 1.4 remove down-fan duct
5.Refer1.5 remove down-fan duct
6.Removed a waterproof filter screw fixed on the chassis.
7.Take out the filter like the picture
8.According to the above steps to remove the parts.