Xerox 3124 用户指南

9.7   

<Troubleshooting>

Dirt inside of the printer or improper paper loading may reduce print 
quality. See the table below to troubleshoot problems. 

If a vertical white streak or faded area appears 
on the page:
• The toner supply is low. You may be able to 

temporarily extend the toner cartridge life. See 
page 8.3. If this does not improve print quality, 
install a new toner cartridge.

• The paper may not meet paper specifications 

(for example, the paper is too moist or too 
rough). See page 5.3.

• If the entire page is light, the print resolution 

setting is too light or toner save mode is on. 
Adjust the print resolution and toner save 
mode in the printer properties. See the 
Software Section.

• A combination of faded or smeared defects 

may indicate that the printer needs cleaning. 
See page 8.1.

• The surface of LSU may be dirty. Clean the 

LSU. See page 8.2.

• The paper may not meet specifications (for 

example, the paper is too moist or too rough). 
See page 5.3.

• The transfer roller or paper path may be dirty. 

See page 8.1.

If generally rounded, faded areas occur 
randomly on the page:
• A single sheet of paper may be defective. Try 

reprinting the job.

• The moisture content of the paper is uneven 

or the paper has moist spots on its surface. 
Try a different brand of paper. See page 5.3.

• The paper lot is bad. The manufacturing 

processes can cause some areas to reject 
toner. Try a different kind or brand of paper.

• The toner cartridge may be defective. See 

“Vertical repetitive defects” on the next 
column.

• If these steps do not correct the problems, 

contact a service representative.

If black vertical streaks appear on the page:
• The drum inside the toner cartridge has 

probably been scratched. Install a new toner 
cartridge. See page 8.4.

If white vertical streaks appear on the page:
• The surface of the LSU part inside the printer 

may be dirty. Clean the LSU. See page 8.2.

If the amount of background shading becomes 
unacceptable, the procedures below may fix the 
problem.
• Change to lighter weight pages. See page 5.3.
• Check the printer’s environment; low humidity 

(lower than 20% RH) or high humidity (higher 
than 80% RH) conditions can increase the 
amount of background shading.

• Remove the old toner cartridge and install a 

new one. See page 8.4.

• Clean the inside of the printer. See page 8.1.
• Check the paper type and quality. See page 

• Remove the toner cartridge and install a new 

one. See page 8.4.

If marks repeatedly appear on the printed side of 
the page at even intervals:
• The toner cartridge may be damaged. If a 

repetitive mark occurs on the page, install a 
new toner cartridge. See page 8.4.

• Parts of the printer may have toner on them. If 

the defects occur on the back of the page, the 
problem will likely correct itself after a few 
more pages.

• The fusing assembly may be damaged. 

Contact a service representative.