Operation Of Each Part - Brother HL-5440D Service Manual

2.3

Operation of Each Part

Part name
T1 pick-up roller
T1 separation roller /
T1 separation pad
T1 paper feed actuator
(T1 paper feed sensor)
Registration front actuator
(Registration front sensor)
Registration roller
Registration rear actuator
(Registration rear sensor)
Heat unit
Pressure roller
Eject actuator
(Eject sensor)
Eject roller 1
Eject roller 2
Duplex paper feed roller
MP pick-up roller
MP separation roller /
MP separation pad
MP paper empty actuator 1/2
(MP paper empty sensor)
T2 pick-up roller
T2 separation roller /
T2 separation pad
T2 paper feed actuator
(T2 paper feed sensor)
Back cover sensor
Front cover sensor
T2 connect sensor
Picks up the paper from paper tray 1.
Separates the paper fed from paper tray 1 into single sheets.
Detects paper tray 1.
Detects a paper jam at the front section of the machine.
Detects the rear edge of the paper to determine the feed timing
of the next sheet of paper.
Detects the front edge of the paper to control the registration
roller drive.
Detects a paper jam at the front section of the machine.
Corrects the paper alignment when the paper makes contact
with the stopped registration roller. Feeds the paper after
correction.
Detects the front edge of the paper to adjust the writing start
position.
Detects a paper jam at the center section of the machine.
Detects the front and rear edges of the paper to determine the
paper size.
Fuses the toner transferred to the paper by heat and pressure,
and feeds the paper to the eject roller.
Determines whether the paper is ejected from the fuser unit.
Detects the rear edge of the paper in duplex printing mode to
adjust the eject roller change timing.
Detects a paper jam at the rear section of the machine.
Determines whether the fuser cover is open when the back
cover is open.
Feeds the paper ejected from the fuser unit to eject roller 2.
Feeds the paper ejected from eject roller 1 to the output tray.
In duplex printing mode, rotates conversely after the paper is
fed a short distance to feed the paper to the duplex tray.
Feeds the paper passing through the duplex tray to the
registration roller.
Picks up the paper from the MP tray.
Separates the paper fed from the MP tray into single sheets.
Detects the paper in the MP tray.
Picks up the paper from paper tray 2.
Separates the paper fed from paper tray 2 into single sheets.
Detects paper tray 2.
Detects a paper jam at the front section of paper tray 2.
Determines whether the paper was fed.
Detects open back cover or incorrect setting of the duplex tray.
(Cannot determine which case applies.)
Detects open front cover.
Detects connection of paper tray 2.
2-6
Operation
Confidential