Paper Curls; Unable To Perform 2-Sided Printing - Brother DCP-7090 Service Manual

4.2.7 Paper curls

<User Check>
• Change the driver setting to be matched with the size of the paper set in the paper tray.
• Select "Reduce Paper Curl" in the driver.
• Check that the paper is set in each paper tray correctly.
• Open the back cover and try printing with straight paper ejection mode.
• Check that the paper is not damp.
Step
1
2

4.2.8 Unable to perform 2-sided printing

<User Check>
• Close the back cover completely.
• Close the paper tray completely.
• Set the driver setting to duplex printing.
• Use A4 or Letter paper specified by the manufacturer.
Step
1
2
3
4
5
6
Cause
Fuser unit failure
Main PCB failure
Cause
Eject actuator coming off
Back cover failure
Eject sensor failure
Duplex tray failure
Damaged gears in the ejecting
system
Main PCB failure
Replace the fuser unit.
Replace the main PCB ASSY.
Reattach the eject actuator.
Replace the back cover.
Replace the eject sensor PCB ASSY.
Replace the duplex tray.
Replace the frame L unit.
Replace the main PCB ASSY.
2-77
Remedy
Remedy
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