M-13
• The Toner Empty Detection Sensor has an LED and a reflecting light detection sensor
built into it. Light from the LED enters the toner detection window and is reflected off the
Reflection Mirror located inside the Toner Cartridge. The reflecting light detection sensor
detects this reflected light.
• The number of times, at which the input voltage to the reflecting light detection sensor
exceeds a predetermined period of time, is counted. When this count reaches a prede-
termined value, a toner near empty or a toner empty condition is detected.
• The toner near empty or toner empty condition is reset when the Front Door is opened
and closed.
Electrical Component Control Signal Blocked Unblocked WIRING DIAGRAM
TE1 PWB-P MPJ14-2 H L A-5
Toner Detection Window
4136M540AA
Reflecting Light
Detection Sensor
When a Sufficient
Amount of Toner is Left
When There is only a Small
Amount of Toner left
LED LED
Reflection
Mirror
Toner Agitating
Blade
To ne r
4980M011AA
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