12 Phaser 3400 Personal Laser PrinterPrint QualityPrint QualityIrregular faded patches of print Be sure to use paper supported by the printer; refer to the Phaser 3400 Personal LaserPrinter User Guide for more information. Toner may be unevenly distributed. Remove the laser print cartridge, shake it gentlyto evenly distribute the toner, then reinsert the cartridge into the printer.Graphics faded Toner may be low. Remove the laser print cartridge, shake it gently to evenlydistribute the toner, then reinsert the cartridge in the printer. If the problem persists, insert a new laser print cartridge.Black stains Be sure to use paper supported by the printer; refer to the Phaser 3400 Personal LaserPrinter User Guide for more information. The printer may require a print-quality adjustment. Press and hold the control panel'sPrint button for 10 seconds (until all lights remain steadily lighted) then release thebutton. The printer performs the print-quality adjustment and prints a cleaning sheet.Character voids The paper may be too dry. Try printing with paper from a new package.Background scatter The paper may be too damp. Try printing with a different batch of paper. Do not openpackages of paper until needed so that the paper does not absorb moisture from theair. The printing surface may be uneven. For example, if printing on envelopes, trychanging the layout of the image to avoid printing over areas that have overlappingseams on the reverse side.Missing characters or data The paper may be too damp. Try printing with a different batch of paper. Do not openpackages of paper until needed so that the paper does not absorb moisture from theair. This may be due to differences in vector mode versus raster mode. Try changing thegraphics mode in the printer driver before re-printing the job.Back of the printout is dirty The transfer roller may be dirty. Print a few blank pages to clean the transfer roller.