Lexmark CS748de - Duplex Tests

3-16 Service Manual
5026
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USB HS Test Mode
1.
Select HARDWARE TESTS from the Diagnostics Menu.
2. Select USB HS Test Mode.
3. Select the port (Port 0, Port 1, Port 2, Port 3).
4. Select the test for that port from the following list:
Test J
Test K
Test SE0 NAK
Test Packet
Test Force Enable
5. While the test executes, USB High Speed Testing… displays.
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 “Printhead
alignment” on page 4-8.
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 is
pressed. For information about changing the margin, see “Top Margin (duplex)” on page 3-18.
The paper you choose to print the page on should be either Letter or A4.