Xerox 3400 参考指南

Print Quality 

Irregular faded patches of print

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Be sure to use paper supported by the printer; refer to the Phaser 3400 Personal Laser 
Printer User Guide for more information.

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Toner may be unevenly distributed. Remove the laser print cartridge, shake it gently 
to evenly distribute the toner, then reinsert the cartridge into the printer.

Graphics faded

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Toner may be low. Remove the laser print cartridge, shake it gently to evenly 
distribute the toner, then reinsert the cartridge in the printer.

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If the problem persists, insert a new laser print cartridge.

Black stains

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Be sure to use paper supported by the printer; refer to the Phaser 3400 Personal Laser 
Printer User Guide for more information.

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The printer may require a print-quality adjustment. Press and hold the control panel's 

Print button for 10 seconds (until all lights remain steadily lighted) then release the 
button. The printer performs the print-quality adjustment and prints a cleaning sheet.

Character voids

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The paper may be too dry. Try printing with paper from a new package.

Background scatter

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The paper may be too damp. Try printing with a different batch of paper. Do not open 
packages of paper until needed so that the paper does not absorb moisture from the 
air.

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The printing surface may be uneven. For example, if printing on envelopes, try 
changing the layout of the image to avoid printing over areas that have overlapping 
seams on the reverse side.

Missing characters or data

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The paper may be too damp. Try printing with a different batch of paper. Do not open 
packages of paper until needed so that the paper does not absorb moisture from the 
air.

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This may be due to differences in vector mode versus raster mode. Try changing the 
graphics mode in the printer driver before re-printing the job.

Back of the printout is dirty

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The transfer roller may be dirty. Print a few blank pages to clean the transfer roller.