Brother LX-200 Service Manual page 16

Paper Width Detection
1. The Y-cutter arm L (sensor unit) moves in the direction of the arrow. When the
PL detect lever touches the document, it rotates about the pivot to switch off the
photosensor.
2. When the photosensor turns off, the Y-cutter arm L movement stops and this
position is detected as the document width.
Photosensor
PL detect lever
Part of the PL detect lever that touches the document.
* Photosensor ON status
* Photosensor OFF status
Fig. 2.1-7
Y-cutter arm L
Sensor unit
Pivot
Paper Width Detection
2-7
Document