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3. OPERATIONS
AND TIMING
-
C. Scanner Drive System
1.
Outline
The scanner
is driven by the scanner
motor (M2). The direction
of rotation of the
scanner
motor
determines
whether
the
scanner
moves
forward
or backward.
The
forward
speed
of the scanner
motor
is
continuously
variable
to produce
the
required
reproduction
ratio.
The reverse
speed is fixed regardless of the reproduction
ratio
(2.5
times
the forward
speed
for
DIRECT copying).
The distance
that the scanner
moves
varies to suit the size of copy paper and the
reproduction
ratio.
The control
panel displays
'E202'
in
response
to an error in the scanner
motor
(M2) or the scanner
home position
sensor
(Q3).
Mirror 1 mount
Scanner home position
ignal generating
plate
Scanner motor (M2)
AC Ny
PCB
Figure 3-13
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