Paper Jam - Brother HL-1070 Service Manual

4.

PAPER JAM

Problem
Jam at power on
Top of paper stopped
at 20mm from the
fixing unit.
Paper feed roller
rotated twice.
Top of paper stopped
at 250mm from the
fixing unit.
Next paper is not fed.
Top paper stopped at
the transfer roller.
Paper was fed approx.
20mm transfer roller.
Top of paper stopped
at 17mm from the
contact point of the
heat roller and
pressure roller.
Top of paper stopped
at 35mm from the
contact point of the
heat roller and
pressure roller.
Jam occurred after
ejecting paper.
Top of paper stopped
at 20mm from the
fixing unit.
Note:
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Type of jam
Paper stuck
No paper
1) Jam caused by
paper length
considered longer than
400mm (16 inches).
2) Jam caused by
malfunction of the
regist sensor.
Jam caused by paper
length considered
shorter than 80mm.
Jam caused by delay of
paper feed.
Jam caused paper is
not ejected from paper
eject sensor.
Jam caused paper is
not ejected from paper
eject sensor.
Same as above.
1. Cover open
2. Bug
How to make the sensors on.
(1) Open the cover.
(2) Power on the printer while pressing the panel switch.
(3) Release the panel switch.
(4) Press and release the panel switch.
Results:
*Alarm Lamp is ON = Paper feed sensor is turned ON
*Drum Lamp is ON = Paper eject sensor is turned ON
Cause
Paper feed sensor or
paper eject sensor is
turned on.
Paper feed sensor is
not turned on.
1) Paper feed sensor
is not returned
properly, and is not
turned off.
2) The regist sensor
actuator is not
returned to the home
position.
Paper feed sensor
was turned off earlier.
Due to the paper dust
or rubber of the paper
feed roller war, paper
was not fed in proper
timing.
Paper eject sensor
does not work
properly and is not
turned off.
(single printing)
Paper feed sensor is
not turned on.
Same as above.
(continuous printing)
1. Cover is not closed
properly.
2. Bug
IV-21
Temp measure
Remove the paper inside
the printer. If there is no
paper exist, check
suspect sensors
referring to note and
clear the problem.
Check paper feed
sensor motion referring
to note and clear the
problem.
1) Check paper feed
sensor motion referring
to note and clear the
problem.
2) Attach the film onto
the regist sensor
actuator.
Malfunction of actuator
or hardware noise.
Check sensors referring
to note and clear the
cause of the problem.
Remove the paper dust
attached to the paper
feed roller. If the rubber
is worn out, replace it
with new one.
Check the sensor motion
referring to note and
clear the problem.
Check the sensor motion
referring to note and
clear the problem.
Same as above.
1. Check if the drum unit
is installed correctly.
2. Inform BIL.