Brother HLL3290CDW Service Manual page 119

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Error code 7100
After the registration rear sensor detects the end of paper pass and the specified period of
time has passed, the eject sensor continues to detect paper pass.
<User Check>
• Remove the jammed paper.
• Check if the back cover is open during 2-sided printing.
Step
Foreign object in the rear of the
1
machine
Eject actuator caught in some
2
sections of the machine
3 Fuser cover attachment failure
4 Back cover attachment failure
5 Eject sensor failure
6 Back cover failure
7 Paper eject ASSY failure
Damaged gears in the paper
8
feed drive unit
9 Fuser unit failure
10 Main PCB failure
Cause
2-83
Remedy
Remove the foreign object.
Reattach the eject actuator.
Reattach the fuser cover.
Reattach the back cover.
Replace the eject sensor PCB.
Replace the back cover.
Replace the paper eject ASSY.
Replace the paper feed drive unit.
Replace the fuser unit.
Replace the main PCB.
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