Canon imageCLASS LBP325dn, Service Manual

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Registration shutter
Me
dia
Registration driven roller
Registration roller
Paper Width Detection
Detection of paper width is performed to prevent temperature increase at the edge of the Fixing Heater.
The width of paper being fed is detected by the Paper Width Sensor (PS21). When the Paper Width Sensor Flags of the right
and left are turned ON, it is detected that the paper width is 210 mm or wider.
If the paper width detected by the Paper Width Sensor Front did not match the paper size set in the paper size of the Select
Feeder menu, "Check paper size." is displayed on the Control Panel.
2. Technical Explanation (Device)
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