Lexmark MX721 User Manual page 244

Troubleshooting
Repeating defects
Note: Before solving the problem, print the Print Quality Test Pages. From the control panel, navigate to
Settings > Troubleshooting > Print Quality Test Pages. For non‑touch‑screen printer models, press
navigate through the settings.
Action
Step 1
Using the Print Quality Test Pages, check if the distance
between the repeating defects is equal to any of the following:
•
96 mm (3.78 in.)
•
49 mm (1.93 in.)
•
47.5 mm (1.87 in.)
•
30.2 mm (1.18 in.)
Does the distance between the repeating defects match any of the
measurements?
Step 2
a
Replace the imaging unit.
b
Print the document.
Do the repeating defects appear?
Print jobs do not print
Action
Step 1
a
From the document you are trying to print, open the Print
dialog, and then check if you have selected the correct printer.
b
Print the document.
Is the document printed?
Yes No
Go to step 2. Take note of the
distance, and then
contact
support.
Contact customer The problem is
support. solved.
Yes No
The problem is Go to step 2.
solved.
244
to
customer