Lexmark CX635
Open door B.
Open door A.
Remove the used right cover.
Remove door B from the used right cover.
Unpack the new right cover.
Attach door B to the new right cover.
Attach the new right cover until it clicks into place.
Close door A, and then close door B.
Prevent excess toner powder from falling freely into the printer. Change the waste toner bottle when it is full.
Install a new scanner glass pad when you continue to see faded scan jobs.