Duplex Printing Is Not Possible; Paper Is Curled; Only Single Surface Is Printed In Duplex Printing Mode - Brother HL-5440D Service Manual

4.2.4 Duplex printing is not possible

<User Check>
- Close the back cover completely.
- Set the paper tray correctly.
- Check that the face-up mode is not selected.
- Set the driver setting to duplex printing.
- Use A4 or Letter-size paper.
- Set the duplex tray correctly.
Step
Eject actuator caught in some
1
sections of the machine
2 Back cover failure
3 Duplex tray failure
Back cover sensor failure
4
5 Duplex solenoid failure
6 Main PCB failure
7 Damaged duplex gears

4.2.5 Paper is curled

<User Check>
- Select "Reduce Paper Curl" in the driver.
- Check that the thickness of the paper is 60 to 105 g/m

4.2.6 Only single surface is printed in duplex printing mode

<User Check>
- Rotate the paper 180° in the paper tray, and retry printing.
- Flip through the paper and reset it in the tray.
- Set the driver setting to duplex printing.
- Use A4 or Letter-size paper.
Step
1 Duplex solenoid failure
2 Main PCB failure
Cause
Reattach the eject actuator.
Replace the back cover.
Replace the duplex tray.
Replace the back cover switch harness
ASSY.
Replace the duplex solenoid.
Replace the main PCB ASSY.
Replace the main frame L ASSY.
Cause
Replace the duplex solenoid.
Replace the main PCB ASSY.
2-58
Remedy
2 2
. (60 to 163 g/m for MP tray)
Remedy
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