Muratec MFX-2500 Field Engineering Manual page 33

2.3.2.3 Original Size Detection Timing
The copier CPU affirms and resets the readings of the original size at the following timings.
Takes size readings:
When the BIS sensor is deactivated.
Affirms size readings:
When the Start key is pressed with the BIS sensor activated or the APS sensor deactuated.
Resets size readings:
When the APS sensor is deactuated.
Magnet
BIS sensor
APS sensor
2-12