HP LaserJet 5000 Service Manual - Page 124

Printing from Tray 2 When the Formatter PCA sends the /PRNT (print signal) to the printer, the CPU turns the Tray 2 pickup solenoid (SL306) on about 0.15 seconds after the main motor (M1) starts rotating, then turns on the feed roller clutch (CL406). The main motor rotates the Tray 2 pickup roller and feed roller. The Tray 2 pickup roller rotates a full circle with the Tray 2 pickup solenoid (SL306) and picks up one sheet of paper from the tray. The paper is fed into the printer as the feed roller rotates. The paper passes through the registration roller paper sensor (PS403) and stops at the registration roller that is not turning, loops the leading edge of the paper and corrects its skew. The CPU turns the feed roller clutch (CL406) off within a specified loop-forming time and stops the feed roller rotation. The CPU turns the registration roller clutch (CL405) and feed roller clutch (CL406) on about 1.3 seconds after the scanner becomes ready and feeds the paper through the transfer unit, separation unit, fuser, and delivery unit and outputs it onto the tray. Figure 5-18 Tray 2 Paper Path EN Paper Feed System 5-33