The bench test procedure references the component acronyms in Table
1Turn the printer’s main power switch off, then disconnect the unit’s power cord.
2Press down the printer’s lower cassette release lever, then remove the unit from the printer and place it on a work bench or other suitable surface.
3Remove the paper size lever, then lift up the slope tray and place the lever between the slope tray and the frame. This will bypass the interlock switch (PCSW) located under the slope tray, allowing 12 Vdc to be applied to the input control board.
Note: The slope tray is normally lifted into operating position by the printer’s lower paper lift arm.
Figure
4Restore AC power to the unit (either the unit’s power cord or the printer’s power cord may be used).
5Open the paper access door. The elevator motor (M1) should turn on, moving the paper stock down. There is an actuator attached to the elevator’s chain drive that will activate photosensor ILLS signalling the input control board that the paper supply tray is completely down.
Note: Remove any paper that may be on the unit’s slope tray
6Close the paper access door. The elevator motor (M1) should turn on, moving the paper stack up. There are two actuators that must enable two photosensors. Photosen-
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