Ricoh SP 8400DN Field Service Manual page 2221

2.Detailed Descriptions
Amount remaining
CN-3
CN-5
Control panel remaining paper display
Paper end detection
When the paper feed tray is empty, the paper end sensor switches ON (unblocked) due to the end feeler.
No.
1 Paper end sensor
2 End feeler
22
Description
100%
OFF
OFF
4 bars
No.
3 Slot in the tray base plate
70% 30%
ON ON
OFF ON
3 bars 2 bars
Description
10%
OFF
ON
1 bar