User Guide

96 Chapter 4 - Operational overview EN
Jam detection
The paper-out sensor (PS201) detects the presence of media in
either the priority input tray or the main input tray. The top-of-page
sensor (PS402) and the paper delivery sensor (PS401) detect media
moving through the printer. If a jam is detected, the ECU immediately
stops the printing process and displays a jam message on the control
panel.
A jam can be detected under any of the following conditions:
 Pickup delay jam—Media does not reach the top-of-page
sensor (PS402) after the pickup solenoid (SL001) has been
turned on twice (the original pickup plus a retry) within 2.8
seconds.
 Pickup stationary jam—The top-of-page sensor (PS402) does
not detect the trailing edge of media within 4.6 seconds of
detecting the leading edge.
 Delivery-delay jam—The paper delivery sensor (PS401) does
not detect the leading edge of media within 2.1 seconds after the
top-of-page sensor (PS402) detects the leading edge.
 Wrapping jam—The paper delivery sensor (PS401) does not
detect the trailing edge of the media within 1.5 seconds after the
top-of-page sensor (PS402) detects the leading edge and within
ten seconds after the paper delivery sensor (PS401) detects the
leading edge.
 Delivery-stationary jam—The paper delivery sensor (PS401)
does not detect the leading edge of media within 2.2 seconds
after the top-of-page sensor (PS402) detects the trailing edge.
 Residual paper jam—The top-of-page sensor (PS402) or the
paper delivery sensor (PS401) detect media in the initial rotation
period.