Printing from Tray 1 The presence of paper in Tray 1 is detected by the Tray 1 Paper Sensor (PS105). When the Engine Controller Board receives the /PRNT signal from the Formatter, the printer starts the initial rotation phase. (This consists of Main Motor warm-up, Scanner Motor warm-up, high-voltage control sequence and Fuser warm-up.) When the initial rotation phase ends, the Tray 1 Pickup Solenoid (SL102) is turned on. The cam rotates, the paper tray lifter rises, and the paper comes in contact with the Tray 1 Pickup Roller. At the same time, the Tray 1 Pickup Roller rotates once and a sheet of paper in Tray 1 is picked up.
The Separation Pad removes the unnecessary sheets, and the paper is at the Top-of-Page Sensor (PS103) when SL102 is turned back on again. The paper then reaches the Registration Arm, where its skew is corrected. Then it goes through transfer, separation, and fusing stages, passes through the delivery unit, and is delivered to the tray. Figure 5-21 Tray 1 Pickup Timing 5-36 Functional Information