Brother DCP-8085DN Service Manual page 88

■ Error code 56
Cover is Open
Close the Fuser Cover which can be found behind the Back Cover up
the machine.
Back cover opened
User Check
• Close the back cover.
• Install the DX unit.
Step
Harness connection failure of relay
1
rear PCB ASSY.
2 Relay rear PCB ASSY failure
3 Main PCB failure
■ Error code 57
Jam Duplex
Pull out the Duplex Tray at the back of the machine and remove the
jammed paper.
Paper jam (Duplex tray)
Step
1 DX feed ASSY failure
2 Main PCB failure
3 Plate gear damaged
Cause
Cause
3-16
Remedy
Check the harness connection of the relay
rear PCB ASSY and reconnect it.
Replace the relay rear PCB ASSY.
Replace the main PCB ASSY.
Remedy
Replace the X feed ASSY.
Replace the main PCB ASSY.
Replace the main frame L unit.
Confidential