EN
Printer functions 69
Jam detection
The paper-out sensor (PS201) detects the presence of media in
either the priority input tray or the main input tray. The paper top
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 paper top 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 paper top 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
paper top 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
paper top 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 paper top sensor (PS402) detects the trailing edge.
!
Residual paper jam—The paper top sensor (PS402) or the
paper delivery sensor (PS401) detect media in the initial rotation
period.
