Lexmark CX310 Service Manual page 52

Actions
Step 3
Enter Diagnostics Menu.
Turn the printer on, press and hold 3 and 6, and release the buttons with
the installed memory and processor speed displays.
Perform the Base Sensor Test. See
a
Select Base Sensor Test, and press Select.
b
Select S2 Sensor, and press Select.
c
Pull tray 1 out, and rotate the S2 sensor flag (A). (The S2 sensor is
located in the front of the center paper pick motor drive assembly
housing.) It should rotate freely and return to its original position.
Watch the display while pushing up on the flag.
Does the display indicate Media Clean and Media Present?
"BASE SENSOR TEST" on page
Diagnostic information
52
Yes
The problem is solved. Go to step 4.
203.
7527
No