Prints Only Single Side Of The Paper When Duplex-Printing; Cannot Make Print Through Duplex-Printing; Paper Size Error; Paper Size Error Through Duplex-Printing - Brother DCP-7057 Service Manual

3.5.10 Prints only single side of the paper when duplex-printing

User Check
• Set the driver setting to the duplex-printing.
• Use the paper of the A4/LETTER.

3.5.11 Cannot make print through duplex-printing

User Check
• Check if the back cover is closed certainly.
• Set the driver setting to the duplex-printing.
• Insert the duplex tray correctly.
Step
Harness connection failure of
1
paper eject sensor PCB ASSY
2 Duplex tray failure
Back cover sensor failure
3
4 Main PCB failure
5 DX gears damaged

3.5.12 Paper size error

User Check
• Load the specified paper size into the tray.
Step
Registration front actuator
1
catching on some position
2 Main PCB failure

3.5.13 Paper size error through duplex-printing

User Check
• Load the specified paper size into the tray.
Step
Registration front actuator
1
catching on some position
2 Main PCB failure
Cause
Cause
Cause
2-78
Remedy
Check the harness connection of the paper
eject sensor PCB ASSY, and reconnect it.
Replace the duplex tray.
Replace the paper eject sensor PCB
ASSY.
Replace the main PCB ASSY.
Replace the main frame L ASSY.
Remedy
Correct catching of the registration front
actuator.
Replace the main PCB ASSY.
Remedy
Correct catching of the registration front
actuator.
Replace the main PCB ASSY.
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