Jam Sensor - Duplo Duprinter DP-43E Service Manual

chap.2
n Paper Ejection Section

(3) Jam Sensor

Description
The jam sensor photo-receiving element is installed on the paper ejection fan unit and detects whether the
paper is ejected normally. When it is detected that the paper is not ejected normally, "PAPER JAM ON THE
EJECTION SIDE" (ejection side) is displayed on the error display panel on the control panel.
Circuit
Operation
The Jam photo-emitting PCB is installed in the master ejection box, and the photo-receiving PCB in the paper
ejection fan unit. HIGH with the optical path interrupted. LOW with the optical path passing.
There are two cases of interruption; interrupted by the paper and the top blow fan is open.
Top Blow fan
Jam sensor(Photo-emitting)
Jam sensor(Photo-receiving)
Paper ejection fan unit
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