Operation Of Each Part - Brother DCP-L8400CDN Service Manual

2.3

Operation of Each Part

Part name
T1 paper 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)
Belt unit
Heat roller, Pressure roller
Eject actuator (Eject sensor)
Eject roller 1
Eject roller 2
Eject roller 3
Duplex paper feed roller
MP paper pick-up roller
MP separation roller,
MP separation pad
MP paper empty actuator
(MP paper empty sensor)
MP registration front actuator
(MP registration front sensor)
T2 paper pick-up roller
Feed the paper from the paper tray 1 to T1 separation roller.
Separates the paper fed from paper tray 1 into single sheets.
Detect whether or not the paper tray 1 is installed (open or
closed). Detect the paper jam of front part.
Detect the front edge of paper and control the drive of the
registration roller. Detect the paper jam of front part. Detect
whether or not the paper is fed from the paper tray 1.
Hit the front edge of the paper to the stopped registration
roller and the inclination of the paper is corrected. After
correction is made, the registration roller rotates to feed the
paper to the belt unit.
Detect the passage of paper and adjust the starting position
for writing on a sheet of paper.
Detect the paper jam of the front part and center part.
Detect the rear edge of paper and identify the paper size.
Feed the paper to the drum unit and transfer toner on the
paper.
Fuse and fix the toner transferred on paper by heat and
pressure, and feed the paper to the eject roller 1.
Detect whether or not paper is ejected from the fuser unit.
In the case of the 2-sided printing, detect the rear edge of
paper and adjust the timing of the eject roller 2 and 3 switching.
Feed the paper ejected from the fuser unit to the eject roller 2.
Feed the paper to the eject roller 3. In the case of the
2-sided printing, after the front of the sheet is printed and the
paper is fed to the eject roller 3 up to a certain point, the
eject roller 2 rotates conversely and feeds the paper fed
from the eject roller 3 to the duplex tray.
Eject the paper to the face-down output tray. In the case of
the 2-sided printing, after the front of the sheet is printed and
the paper is fed up to a certain point, eject roller 3 rotates
conversely, and the paper is fed to the eject roller 2.
Feed the paper passed in the duplex tray to the registration
roller.
Feed the paper from the MP tray to MP separation roller.
Separates the paper fed from the MP tray into single sheets.
Detect whether paper is loaded in the MP tray.
Detect the front edge of paper from MP tray and control the
drive of the registration roller. Detect the paper jam of MP
part. Detect whether or not the paper is fed from the T2
paper tray unit.
Feed the paper from the T2 paper tray unit to T2 separation
roller.
2-9
Operation
Confidential