Lexmark CS310 Service Manual page 66

Actions
Step 3
Enter Diagnostics Menu.
For CS310 models, turn the printer on, press and hold Down and Right,
and release the buttons with the installed memory and processor speed
displays.
For CS410 and CS510 models, 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.
d
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
66
Yes
Problem resolved.
176.
5027
No
Go to step 4.