Lexmark X73 4402-001 - Manual (Page 33)

Diagnostic Aids 3-1
4402-001
3. Diagnostic Aids
Test Page
This test prints the test page.
To run a complete test page of black and color patterns, be sure the
printhead cartridges are in good condition.
To enter the test:
1. Open the access cover.
2. Install a known good black print cartridge in the right side of the
carrier and a good color print cartridge in the left side.
3. Close the access cover.
4. Install paper in the sheet feeder.
5. Press and hold the paper feed button while pressing the power
button and releasing it.
6. Paper feeds into the printer.
7. The test page prints.
The test page consists of three color bars, nozzle purge pattern,
black purge pattern, black nozzle purge pattern and heater
checks.
Note: To stop test page, press the power button again.
The test page prints three color bars, nozzle purge pattern, black
purge pattern, black nozzle purge pattern and heater checks. The
purge pattern is used to clear all printhead nozzles. The nozzle test
pattern prints all nozzles on a diagonal line. There should be no
breaks in the nozzle test pattern. A break in the pattern indicates
one or more nozzles are not working.
If a print quality problem exists, see “Print Quality Service Check”
on page 2-15 .