Lexmark X642e Service Manual page 435

5.
For models X644e/X646e, remove the flatbed white cushion. See
page 4-32.
6.
Press the release lever to open the lower exit guide
7.
Use the cloth or swab to clean the ADF CCD glass and back ADF white strip with the cloth or swab.
8.
Close the lower exit guide.
9.
Close the document cover.
Models X644e/X646e
"Flatbed white cushion removal" on
Preventive maintenance
7002-xxx
6-3