Xerox Phaser 8400

That is a problem with print head movement. Either side to side or tilt. There is a stainless steel print head block located on the left side of the frame, about 2/3 of the way back and near the bottom, It may be contaminated with ink. Or the print head wiper may be tacked to the print head. If you want info how ot access and repair, let me know.