Sharp SF-S55N Service Manual page 100

20-bin staple sorter
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(6) In-bin paper sensor
1) Outline
The in-bin paper sensor consists of LED and
phototransistor. It detects paper in the bin.
In-bin paper
sensor
S3
(light emitting
section)
(light receiving
S4
section)
Bin unit
Bin unit control
PWB
9−30
Phototransistor (S4)
Phototransistor (S7)
"1": LED lights
"1": Paper exists in the bin.
Sorter controller PWB
SF-S55N

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