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Service Guide ML590/ML591
Chapter 2 Principles of Operation
2.2.05 Line Feed Mechanism
The line feed operation is accomplished by activating the line feed motor which turns the platen.
The rotation of the platen is used to feed paper from the selected paper path.
Components of the paper feed mechanism are listed below.
Line Feed Motor (pulse motor) with Gears
Line Feed Idler Gear
Platen
Rear Tractor Feed Unit
Pressure Roller
Change Lever (Paper Path Selection Lever)
The change lever is used to select one of three different paper paths; top, rear or bottom.
Paper Clamp Mechanism
Moving the Change Lever between the Bottom, Top and Rear positions, changes the positions of
the Front Release Gear Arm and the Release Cam.