Chapter 22-392.5 Document Reversing2.5.1 Basic Sequence of Operation 0002-9742a. Picking Up the Original for Reading the 1st SideThe platen roller rotates using the drive from the feed motor (M2) for reading the 1st sideof the original. The machine keeps count of pulses from the feed motor to monitor themovement of the original; and, before the trailing edge of the original leaves the platenupstream roller, the machine drives the lock motor(M4) for a specific number of pulses tomove the platen upstream roller away (i.e., to prevent the impact otherwise occurring whenthe trailing edge of the original leaves the roller). Moreover, before the trailing edge of theoriginal leaves the platen downstream roller, the machine turns on the delivery reversalmotor (M3) to discharge the original; likewise, it also turns on the release solenoid to lockthe delivery reversing roller in place. The machine accelerates the delivery reversal motorwhen the trailing edge of the original leaves the platen downstream roller.F-2-31M2M4PI9Read roller 2Platen RollerRead roller 1Read roll 1PI9SL2M3Delivery reversalupper rollerDelivery reversal low roller
