Xerox 7042 - Manual (Page 128)

Maintenance Procedures
Printer errors
The following table lists some items to check if the machine is
not operating correctly. Refer to the Cleaning Procedures
section in this chapter for information on how to clean the
internal components of the machine. If the machine continues to
print poorly once you check all the items in the table, contact
your service representative.
Table 10-3:
Printer
Errors
If the machine
prints:
Point to Check
Vertical black
lines If light enters the opening in the upper part of the control
panel, move the machine to a new location.
Check and clean the scanner platen glass.
Replace the drum unit and the ozone filter.
Horizontal
black lines
Clean the paper transport with a dry cloth.
Replace the drum unit and the ozone filter.
Vertical white
lines
Clean the transfer wire with a cotton swab.
Clean the metering blade with the mylar scraper.
Clean the laser beam window with a cotton swab or a dry
cloth.
If the recording paper is damp, replace the paper.
Uneven print Check that the machine is placed in a level location.
Clean the metering blade with the mylar scraper.
Black or white
dots
Wipe the paper guides with a dry cloth.
Replace the cleaning pad.
If the dots have 94mm (3.70 in) intervals, replace the drum
unit.
If the recording paper is damp, replace the paper.
Completely
black Replace the drum unit and the ozone filter.
Completely
white
Clean the machine contacts with a cotton swab.
10-6