Brother International HL-1070 Service Manual - Page 85

PAPER JAM, Inform BIL.

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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. Type of jam Paper stuck Cause Paper feed sensor or paper eject sensor is turned on. No paper Paper feed sensor is not turned on. 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. 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. 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. 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. 1. Cover open 2. Bug Same as above. (continuous printing) 1. Cover is not closed properly. 2. Bug 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. Note: 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 IV-21

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