Brother HL-S7000DN Series, Service Manual

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2-7
Confidential
2.3 Operation of Sensors/Rollers/Solenoids
Part name Operation
Top cover sensor Detect when the top cover is opened or closed.
Chute cover sensor Detect when the chute cover is opened or closed.
Back cover sensor Detect when the back cover is opened or closed.
Optional back cover sensor Detect when the optional back cover is opened or
closed.
Ink cartridge cover sensor Detect when the Ink cartridge cover is opened or closed.
Cover lock sensor Detect when the top cover is at locked or unlocked
state.
Tray ID switchs Switch ID that is set on each tray.
Tray paper size sensors Detect size of paper that is set on each tray.
Paper empty sensors Detect with or without paper within each tray.
Paper level sensors When the remaining amount of paper within each tray
becomes 10%, detect "paper low".
Plate up sensors Detect when the plate-up plate of each tray is elevated
to the specified position.
Pick-up rollers Feed the paper from each paper tray.
Retard rollers/Separation pads Separate papers that were fed from each paper tray in
a unit of one sheet.
Paper feed jam sensors Detect whether paper fed from each tray normally
passes the actuator position of each sensor.
Along with other sensors, detect paper jam.
Registration front sensor Detect the paper jam of front part.
Print starting sensor Detect the front edge of paper and start printing.
Detect paper jam.
Switchback sensor Detect rear edge of the paper during 2-sided printing,
control timing to pull the paper into the 2-sided tray.
Along with other sensors, detect paper jam.
Paper eject sensor Detect when paper is ejected from engine.
Detect paper jam of rear part.
Optional output sensor Detect whether paper is ejected from the optional
output tray.
Along with other sensors, detect paper jam.
Eject roller1/2 Feed the paper that was ejected from the engine to
eject tray.
Eject roller3 Feed the paper that was ejected from the engine to
eject tray. When 2-sided printing is performed, after
papers are fed to some extent, reverse and feed the
paper to 2-sided tray.
Stack sensor Detect whether the amount of paper on the eject tray
exceeds the limit.
Optional stack sensor Detect whether the amount of paper on the optional
output tray exceeds the limit.