Safe Mode engine features Engine behavior Control panel behavior
Simplex printing only Will report that no duplexer is installed. Duplex print option will not be
selectable.
Ignore duplex sensor
Ignore bin full sensor Bin full messages will not be reported. Bin full messages will not occur.
Print at narrow media operating
point
Pages will be printed slower. N/A
Ignore narrow media sensor Narrow media will print without
restrictions.
N/A
Ignore all input options Will report that only Tray 1 is installed. Only Tray 1 and the MPF will be
selectable.
Ignore all output options Will not report any installed finishing
options.
Finishing options will not be
selectable.
Use large interpage gaps Pages will have large interpage gaps. N/A
Fixing print quality issues
• “Initial print quality check” on page 43
• “Gray background or toner fog check” on page 44
• “Repeating defects check” on page 45
• “Blank pages check” on page 45
• “Solid black pages check” on page 46
• “Shadow images check” on page 47
• “Skewed print check” on page 48
• “Streaked horizontal or vertical lines check” on page 50
• “Toner smear check” on page 50
• “Toner specks check” on page 51
The symptoms described in this chapter might require replacement of one or more CRUs (Customer
Replaceable Units) designated as supplies or maintenance items, which are the responsibility of the customer.
With the customer's permission, you might need to install a toner cartridge.
Initial print quality check
Before troubleshooting specific print problems, complete the following initial print quality check:
• Use only genuine Lexmark supplies. Third-party supplies may cause print quality problems.
• The printer must be in a location that follows the recommended operating environment specifications.
See
“Operating environment” on page 484.
• Check the life status of all supplies. Any supply that is low should be replaced.
• Load 20‑lb plain letter or A4 paper. Make sure the paper guides are properly set and locked. From the
control panel, set the paper size and type to match the paper loaded in the tray.
7016
Diagnostic information
43
To Next Page
Loading...
