DP-CL18
3.5.13. Exit Paper Full Sensor Circuit
The exit paper full sensor is located on the paper full sensor board.
When the paper output tray is full, the paper sensor lever shades the light from the photo diode in the photo transistor Q1512 and
the photo transistor is turned off. As a result, IC14 receives the high level EXTFULL (pin 188 of IC14) and detects that the paper
output tray is full. The message "Output Tray Full" is displayed on the LCD display.
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