Brother MFC-9130CW Service Manual page 100

■ Error code 8501
No Tray
The paper tray cannot be detected, re-install Tray1
The paper feed sensor detected that the paper tray was not set (before print registration in
engine) in 2-sided printing.
Error code 8505
No Tray
The paper tray cannot be detected, re-install Tray1
The paper feed sensor detected that the paper tray was not set (after print registration in
engine) in 2-sided printing.
<User Check>
- Set the paper tray correctly.
Step
1 Foreign object around the area
from which paper tray is inserted
2 Paper feed actuator that has
come off or that has been caught
3 Paper feed sensor PCB harness
connection failure
4 Paper feed sensor PCB failure
5 Main PCB failure
■ Error code 8903
2-sided Disabled
Close the Back Cover of the Machine
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
2-sided Disabled
Close the Back Cover of the Machine
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.
Step
1 Back cover sensor harness
connection failure
2 Back cover sensor installation
failure
3 Breakage of boss that presses
the back cover sensor
4 Back cover sensor failure
5 Main PCB failure
Cause
Cause
2-61
Remedy
Remove foreign object.
Re-assemble the paper feed actuator.
Check the paper feed sensor PCB
harness connection and reconnect it.
Replace the paper feed unit.
Replace the main PCB ASSY.
Remedy
Check the back cover sensor harness
connection and reconnect it.
Re-assemble the back cover sensor.
Replace the back cover.
Replace the back cover sensor harness
ASSY.
Replace the main PCB ASSY.
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