Brother International DCP1000 Service Manual - Page 138

Brother International DCP1000 - DCP 1000 B/W Laser Manual

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Trouble (12) Faulty image registration (Leading edge of image starts too late on paper) Action to be taken At the printer side • Instruct the user not to load paper exceeding the limit in the A SF. • Instruct the user to use the recommended types of paper. • Replace the ASF. • Check the position of the registration sensor. • Replace the gear drive unit. (13) Image distortion or improper image alignment LP (14) Blurred at either side In communications Check the following components: - Error code displayed. (Refer to Section 6.1, "ERROR _ INDICATION" in this chapter.) NCU PCB - Main PCB At the scanner Check the following components: - Document take-in roller, separation roller, and their related sections - Document feed roller and its related gears - ADF motor and its harness - Main PCB At the printer side • Check that the laser unit is secured with the screws without looseness. • Check the connection of the polygon motor harness. • Check the connection of the laser flat cable on the main PCB. • Replace the laser unit. At the printer side • Check that the equipment is placed on a flat surface. • Shake the toner cartridge horizontally. If the problem persists, replace it. • Clean the laser beam window (glass) on the laser unit. • Replace the laser unit. 6-24

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Trouble
Action
to
be
taken
(12)
Faulty
image
registration
(Leading
edge
of
image
starts
too
late
on
paper)
At
the
printer
side
•
Instruct
the
user
not
to
load
paper
exceeding
the
limit
in
the
A
SF.
•
Instruct
the
user
to
use
the
recommended
types
of
paper.
•
Replace
the
ASF.
•
Check
the
position
of
the
registration
sensor.
•
Replace
the
gear
drive
unit.
(13)
Image
distortion
or
improper
image
alignment
In
communications
Check
the
following
components:
-
Error
code
displayed.
(Refer
to
Section
6.1,
"ERROR
INDICATION"
in
this
chapter.)
_
NCU
PCB
-
Main
PCB
At
the
scanner
LP
Check
the
following
components:
-
Document
take
-in
roller,
separation
roller,
and
their
related
sections
-
Document
feed
roller
and
its
related
gears
-
ADF
motor
and
its
harness
-
Main
PCB
At
the
printer
side
•
Check
that
the
laser
unit
is
secured
with
the
screws without
looseness.
•
Check
the
connection
of
the
polygon
motor
harness.
•
Check
the
connection
of
the
laser
fl
at
cable
on
the
main
PCB.
•
Replace
the
laser
unit.
(14)
Blurred
at
either
side
At
the
printer
side
•
Check
that
the
equipment
is
placed
on
a
fl
at
surface.
•
Shake
the
toner
cartridge
horizontally.
If
the
problem
persists,
replace
it.
•
Clean
the
laser
beam
window
(glass)
on
the
laser
unit.
•
Replace
the
laser
unit.
__________
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_
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___
---__
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_____
______
___
_______.
------.
__.
------.
__
__.
-------
----.
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_______...
__.
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6-24