Duplex Tests - Lexmark C746n Service Manual

5026
USB HS Test Mode
Select HARDWARE TESTS from the Diagnostics Menu.
1.
2. Select USB HS Test Mode.
Select the port (Port 0, Port 1, Port 2, Port 3).
3.
Select the test for that port from the following list:
4.
Test J
Test K
Test SE0 NAK
Test Packet
Test Force Enable
While the test executes, USB High Speed Testing... displays.
5.
To exit the test, restart the printer.

Duplex Tests

Quick Test (duplex)
Note: Before you set the duplex top margin, be sure to set the skew and alignment. See
alignment" on page
This test prints a duplex version of the Quick Test that can be used to verify 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
pressed. For information about changing the margin, see
The paper you choose to print the page on should be either Letter or A4.
Service Manual
3-16
4-8.
"Top Margin (duplex)" on page
"Printhead
is
3-18.
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