HP LaserJet Enterprise 700 M712 series Handbuch Zur Fehlerbehebung Seite 313

Table 2-52 Image defect examples (continued)
Problem
Tire tracks
White spots on black or
in the image
Scattered lines
ENWW
Image example Solution
This defect typically occurs when the toner cartridge has far exceeded its estimated
life. For example, if you are printing a very large quantity of pages with very little
A a B b C c
toner coverage.
A a B b C c
A a B b C c 1.
A B b C c
a
2.
A a B b C c
1.
2.
3.
4.
5.
6.
7.
1.
2.
3.
4.
5.
The toner cartridge might need to be replaced.
Reduce the number of pages that you print with very low toner coverage.
Print a few more pages to see if the problem corrects itself.
Make sure that the type and quality of the paper you are using meet
HP specifications. For more information, see the product user guide.
Make sure that the environmental specifications for the product are being met.
The toner cartridge might need to be replaced.
If the transfer roller is deformed or damaged, replace the roller.
The transfer roller shaft might be dirty (poor contact). Remove the transfer
roller and clean the shaft.
The high-voltage power supply might be damaged. Replace the high-voltage
power supply.
Make sure that the type and quality of the paper you are using meet
HP specifications. For more information, see the product user guide.
Make sure that the environmental specifications for the product are being met.
Turn over the paper in the tray. Also, try rotating the paper 180°.
Change the toner density. Open the Administration menu at the product
control panel. Open the General Settings menu and then open the Print
Quality menu. Change the Toner density setting.
Open the Administration menu at the product control panel. Open the
General Settings menu and then open the Print Quality menu. Open the
Optimize menu and set the Line Detail setting to Up.
Solve image-quality problems
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