Lexmark 4064-210 MS821n

For non-touch-screen printer models, press [OK] to navigate through the settings.

1. Enter the Diagnostics menu, and then touch Printer diagnostics & adjustments.
2. From the Sensor tests section, touch Start. A dialog listing the sensor tests appears.
3. Find, and then manually toggle the sensor.

Notes:

• The sensor status on the screen toggles between 1 and 0 when the sensor is properly working
• If a sensor test fails, the test failure may not indicate a failed sensor. Further troubleshooting may be required. Check the boards and cables for possible issues.
• For the fuser exit sensor actuator, toggle it toward the rear door.

List of sensor tests

• MPF media present
• Media out (tray 1)
• Pick roller index (tray 1)
• Pick (tray 1)
• Tray 1 pass‑through
• Input
• Narrow media
• Fuser exit
• Duplex path
• Duplex interlock
• Output bin full
• Front door interlock
• Rear door interlock
• Media size (tray [x]) switch [x]