Dell 3333dn Service Manual page 139

3.
To test the paper present sensor, push back on the actuator (A). If the sensor is functioning, the 0 next to
the P on the display will change to 1.
4.
To test the flatbed cover closed sensor, lift the flatbed cover. The 0 next to the F will change to 1. Also
check the actuator (B) to ensure it is functiong properly.
A
A
Diagnostic aids
3-35