Lexmark C520 Series, Service Manual

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Diagnostic aids
3-7
5022- xxx
Alignment
1.
Select ALIGNMENT from DIAGNOSTICS . Scroll until you reach the color that you desire to align. Go to
each submenu, press Select and use the right and left arrow keys to zero out all settings. Press the Select
button after you zero out each setting.
Note: It is important to zero out all settings to make the adjustment easier.
2.
Scroll to Quick Test in the same color menu. Press Select; two pages print.
3.
On the pages, ensure all the Current Values are set to zero. If not, go back two steps and repeat.
4.
Look at the course and fine adjustments on the top left of the page and enter the best number for the top
adjustment in the T space. Go ahead and transfer this number over to the computation area for Z so that
you don't forget later.
5.
On the operator panel, use your up and down arrows to find Top Margin Press Select and then use the left
and right arrows to enter the setting computed for T. Press Select to save.
6.
Repeat this process for skew (Z). Don't forget to add the T value and the current Z value to obtain the new
skew (Z) value.
7.
Reprint the Quick Test page and observe. Make additional adjustments if necessary before proceeding on
to Quick Test step two page.
8.
Obtain left (L), right (R), and Bow (P) value using the same method as obtaining T from Quick Test Step 1.
Reprint the Quick Test to ensure the settings are correct. Make additional adjustments as required.
9.
Press Back ( ) to return to ALIGNMENT.
Motor tests
The motor tests are run primarily to locate noises in the printer.
General motor test
In some instances, when you enter a particular test, you will be given the choice to run the motor in forward or
reverse. Other times, there will only be the option to run the motor in forward direction.
Before you run any particular motor test, ensure you have configured the printer as directed in the following
table:
1.
Select Motor Tests from DIAGNOSTICS . Scroll until you reach the motor that you desire to test.
2.
Press Select to run the test. Forward will appear or forward and reverse will appear. If both appear,
scroll to the direction that you desire. Press Select again.
3.
Press Stop ( ) to end the test.
Motor test
Setup requirements
Top access cover Front access door
Align motor Closed Closed
Fuser motor Closed Closed
Bottom cartridge
a
Closed Open
Top cartridge
a
Closed Open
Transfer Closed Open
Tray 1
b
Not applicable Not applicable
Tray 2
c
Not applicable Not applicable
a
The toner cartridges should be removed when testing the cartridge motors for any extended period
of time. However, they will have to be in initially when entering the diagnostic mode.
b
A paper jam will occur if all paper is not removed from the input source before performing this test.
c
A paper jam will occur if all tray 2 is not completely removed.