Document Feeding Problems - Brother MFC-P2000 - B/W Laser Printer Service Manual

5. DOCUMENT FEEDING PROBLEM
Caution:
When a document jam occurs, pressing the Stop key will eject the jammed document. If
the document is not ejected, open the scanner panel cover to remove it.
Problem
'1' is indicated on
the LED although
no documents are
set.
Or, '1' is not
indicated on the
LED although
documents are set.
Documents are not
fed.
Documents are
double-fed.
Possible cause
Scanner sensor Check the sensor works
failure correctly by using the
factory inspection
program mode.
Document Do the document
front/rear sensor front/rear sensor
actuators failure actuators work
correctly?
Main PCB failure Is the problem solved
after the main PCB is
replaced?
ADF failure Does the ADF and its
related parts (especially
the separation rubber)
work correctly?
Scanner motor Does the scanner motor
failure work correctly? Is the
scanner motor harness
connected securely?
Document feed Do the document feed
roller failure rollers and their related
gears work correctly?
Main PCB failure Is the problem solved
after the main PCB is
replaced?
Document Does the document
thickness meet the document
specification (thickness,
etc.)? Are more
documents than the
maximum number set in
the ADF?
ADF parts failure Do the ADF feed parts
(especially the
separation rubber) work
correctly?
Scanner panel Is a document set with
cover the panel cover opened?
Check
IV-24
Remedy
Result
No Replace the scanner
sensor PCB.
No Replace the
document front/rear
sensor actuators.
Yes Replace the main
PCB.
No Replace the defective
ADF related parts.
No Replace the scanner
motor or reconnect
the scanner motor
harness securely.
No Replace the defective
document feed roller
or gear.
Yes Replace the main
PCB.
Yes Set the specified type
and number of
documents.
No Replace the defective
ADF parts.
Yes Re-set the document
with the panel cover
closed.