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OVERVIEW
1. Top cover: Raises when replacing the toner, print, or
developer cartridge, and when removing paper jammed in
the main paper path.
2. Serial number: Is the unique identification number for this
printer. The serial number is located inside the top cover.
3. Print cartridge: Contains a photosensitive “print drum” or
“photoreceptor” used in the printing process. This cartridge
is a customer replaceable unit (CRU).
4. Toner cartridge: Contains the toner supply for the printer.
This cartridge is a CRU.
5. Developer cartridge: Contains the magnetic roll which puts
the toner onto the photoreceptor. The developer cartridge
has a slot which holds the toner cartridge. This cartridge is a
CRU.
6. Transfer corotron assembly: Charges the photoreceptor to
produce images in the printing process.
7. Print density control knob: Adjusts the print quality. Turn
the control knob clockwise for darker printing, and
counterclockwise for lighter printing.
Control panel
Figure 2-5 shows the control panel. The control panel consists
of a printer mimic, message display area, six buttons and four
indicator lights.
2-8 XEROX 4213 LASER PRINTER USER GUIDE