Brother International MFC-7050C Service Manual - Page 21

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2.2.3 Carrier drive mechanism The carrier transport motor controls horizontal motion. The motor rotation is transmitted via the motor pulley to the timing belt. The carrier, which is supported and guided by the main shaft, is secured to the timing belt. Clockwise and counterclockwise rotations of the carrier transport motor move the carrier to the right and left, respectively. On the back of the carrier is the carrier home position sensor (photointerrupter) which tells the control circuitry whether the carrier is in the home position. Frame chassis Carrier ASSY Carrier home position sensor (photointerrupter) Carrier transport motor Idle pulley JIB 1 I fi UU 7 Main shaft Timing belt Motor pulley III - 10

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2.2.3
Carrier
drive
mechanism
The
carrier
transport
motor
controls
horizontal
motion.
The
motor
rotation
is
transmitted
via
the
motor
pulley
to
the
timing
belt.
The
carrier,
which
is
supported
and
guided
by
the
main
shaft,
is
secured
to
the
timing
belt.
Clockwise
and
counterclockwise
rotations
of
the
carrier
transport
motor
move
the
carrier
to
the
right
and
left,
respectively.
On
the
back
of
the
carrier
is
the
carrier
home
position
sensor
(photointerrupter)
which
tells
the
control
circuitry
whether
the
carrier
is
in
the
home
position.
Carrier
ASSY
Frame
chassis
Carrier
home
position
sensor
(photointerrupter)
JIB
I
Idle
pulley
1
fi
UU
Main
shaft
III
-
10
7
Timing
belt
Carrier
transport
motor
Motor
pulley