Proof Tray Sensors - Gestetner B003 Service Manual

2.2 PROOF TRAY SENSORS

[A]
2.2.1 PAPER SENSOR
The paper sensor in the proof tray consists of two sensor boards; one is an LED
board [A] and the other is a phototransistor board [B]. The sensor detects
whether or not there is paper on the proof tray. When there is paper on the
proof tray, the paper interrupts the light from the LED.
2.2.2 PAPER OVERFLOW SENSOR
There is also a paper overflow sensor [C] located in the proof tray. The machine
detects paper overflow when the top sheet of the paper stack pushes up the
sensor feeler. When this occurs, a message will be displayed on the operation
panel and the machine stops printing until the paper stack on the proof tray is
removed.
SM
[B]
15-7
PROOF TRAY SENSORS
[C]
G909D504.WMF
B003/B004/B006/B007