Table 2-54 Image defects table (continued)
Problem Sample Cause Solution
Some color is misregistered. The printer is incorrectly
calibrated.
Calibrate the printer.
The ITB unit is defective. If the ITB does not rotate smoothly or
a cleaning malfunction occurs (ITB is
dirty), replace the ITB.
The drive gear of the drum
motor (ITB drive motor) is worn
or chipped.
Check each drive gear between the ITB
drive roller and the ITB motor. If the
gear is worn or chipped, replace the
main drive assembly.
The registration density sensor
is defective.
Open and close the front door several
times to clean the registration density
sensor. If the problem persists,
replace the registration density
sensor.
The laser/scanner unit is
defective.
Replace the laser/scanner assembly.
The toner cartridge is defective. Replace the toner cartridge of the
aected color.
Toner smears appear on the paper. The printer has residual paper. Remove the residual paper.
The fuser inlet guide is dirty. Clean the fuser inlet guide.
Poor grounding contact exists in
the toner cartridge.
Replace the toner cartridge of the
color that matches the defect.
The printed page contains
malformed characters.
The printer is experiencing page
skew.
See the “Text or graphics are skewed
on the printed page” row in this table.
The laser/scanner unit is
defective.
Replace the laser/scanner assembly.
414 Chapter 2 Solve problems ENWW
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