Brother DCP-L8400DN Service Manual

2-64
Confidential
■ Error code 8501
The T1 paper feed sensor detected that the paper tray 1 is open in 2-sided printing or printing
by feeding paper from the T2 paper tray unit. (before the registration of printing in the engine)
Error code 8505
The T1 paper feed sensor detected that the paper tray 1 is open in 2-sided printing or printing
by feeding paper from the T2 paper tray unit. (after the registration of printing in the engine)
< User Check >
- Check if the paper tray 1 is closed correctly.
■ Error code 8903
The back cover sensor detected the open state when 2-sided printing is started.
(before the registration of printing in the engine)
Error code 8904
The back cover sensor detected the open state during 2-sided printing.
(after the registration of printing in the engine)
< User Check >
- Close the back cover.
No Tray
The paper tray cannot be detected, re-install Tray1.
No Tray
The paper tray cannot be detected, re-install Tray1.
Step Cause Remedy
1 T1 paper feed actuator that has
come off or that has been caught
Re-assemble the T1 paper feed actuator.
2 Connection failure of the T1
paper feed sensor PCB harness
Reconnect the T1 paper feed sensor PCB
harness.
3 T1 paper feed sensor failure Replace the T1 paper feed sensor PCB
ASSY.
4 Main PCB failure Replace the main PCB ASSY.
2-sided Disabled
Close the Back Cover of the Machine.
2-sided Disabled
Close the Back Cover of the Machine.
Step Cause Remedy
1 Connection failure of the back
cover sensor harness
Reconnect the back cover sensor
harness.
2 Back cover sensor installation
failure
Re-assemble the back cover sensor.
3 Breakage of boss that presses
the back cover sensor
Replace the back cover.
4 Back cover sensor failure Replace the back cover sensor ASSY.
5 Main PCB failure Replace the main PCB ASSY.

Brother DCP-L8400DN Specifications

General

Brand	Brother
Model	DCP-L8400DN
Category	All in One Printer
Language	English