Lexmark X642E, Service Manual, Page: 221 / 525

Diagnostic aids
3-11
7002-xxx
DUPLEX TESTS
Quick Test (duplex)
This test prints a duplex version of the Quick Test that can be used to verify that the correct placement of the top
margin on the back side of a duplex page. You can run one duplexed page (Single), or continue printing
duplexed pages (Continuous) until Stop ( ) is pressed. For information about changing the margin, see “Top
Margin (duplex)” on page 3-11 .
Note: Before you set the duplex top margin, be sure to set the registration. See “Registration (printer)” on
page 3-5 .
The paper you choose to print the page on should be either Letter or A4.
To run the Quick Test (duplex):
1.
Touch to select Quick Test from DUPLEX TESTS.
2.
Touch to select Single or Continuous.
•
The single Duplex Quick test cannot be canceled.
•
The printer attempts to print the Quick Test Page from the default paper source. If the default paper
source only supports envelopes, then the page is printed from Tray 1.
•
Check the Quick Test Page for the correct offset between the placement of the first scan line on the
front and back side of a duplexed sheet.
The single test stops automatically when a single duplex sheet is printed, and the continuous test continues until
you press Stop (
)
.
Top Margin (duplex)
This setting controls the offset between the first scan line on the front of the duplex page and the first scan line
on the back of the page. Therefore, be sure to set the top margin in REGISTRATION before setting the duplex
top margin. See
“Registration (printer)” on page 3-5 .
To set the Top Margin (duplex):
1.
Print the Quick Test (duplex):
a.
Touch to select Quick Test from DUPLEX TESTS.
b.
Select Single.
c.
Hold the page to the light to see the whether the top margin of the backside aligns with the top margin
of the frontside.
2.
Select Top Margin from DUPLEX TESTS.
3.
Use the arrows to increase or decrease the current setting displayed on the touchscreen to select the
margin setting:
[setting's current value] .
•
Each increment shifts the duplex top margin by 1/100 of an inch.
•
The Top Margin (duplex) range is -20 to +20, and the default value is 0.
•
An increase moves the top margin down and widens the top margin. A decrease moves the top
margin upward and narrows the top margin.
4.
Touch Submit.
5.
Print the Quick Test (duplex) again to verify the adjustment. Repeat if necessary.