HP 2100 Service Manual - Page 81

Printer Functionality and Operation There are four major systems that make up the HP LaserJet 2100 printer and allow it to operate. Each system works independently to accomplish its task, but must be coordinated with the other systems to successfully produce a printed page. Understanding these systems, their function, and how they interact with each other is the key to troubleshooting any problem. Detailed information regarding the troubleshooting of the HP LaserJet 2100 is included in Chapter 6: Troubleshooting. The HP LaserJet 2100 printer's four major systems are as follows: • "Formatter System" (page 72) - Receives print data from the host, processes the image, and transfers it to the Engine Control System. The Formatter System also provides the interface between the user and the printer (Control Panel). • "Engine Control System" (page 77) - Monitors and controls all of the printer's mechanical and electrical subsystems. It is the center of the printer's operation. • "Image Formation System" (page 80) - Produces the actual physical image on the page. • "Paper Pick and Feed System" (page 87) - Moves paper or other print media through the printer from one of the selected input trays (Tray 1, 2, or 3) to the selected output bin (top or rear). Figure 5-2 Printer Functionality Divided into Systems C4170-90959 Printer Functionality and Operation 71