Konica Minolta QMS magicolor CX Reference - Manual (Page 95)

Removing and
Replacing the
Controller Board
2-21 Printer Options
3 Pull the controller board straight out and lay it on a flat sur-
face.
Replacing the Controller Board
▲ Caution: The following instructions are written for advanced users.
Do not attempt this procedure if you have no experience working with
circuit boards.
1 Reinsert the controller board making sure it’s properly
seated in its connectors.