CARE AND MAINTENANCEAdjusting the print densityThe print density has been adjusted to the proper level at thefactory and normally does not require any adjustment. Fromtime to time, however, it may be necessary to adjust the printdensity for darker or lighter prints for one or more of thefollowing reasons:• The print density may need to be increased or decreasedwhen a different paper is used• The print density may need to be increased or decreasedwhen temperature and/or humidity have changeddramatically.The print density may be made darker or lighter by performingthe following procedure:1. Open the top cover by lifting the top cover access handle.2. Turn the print density control knob to the right (clockwise)for darker printing, or to the left (counterclockwise) forlighter printing.Note: Even if you turn the knob all the way to the right or left,the print density changes only slightly.Caution: Avoid touching the shiny, blue surface of the printcartridge. Damage to the blue surface can cause print defects.XEROX 4213 LASER PRINTER USER GUIDE 5-63
