Brother DCP-L8400DN Service Manual

2-74
Confidential
■ Error code 9A01
Error occurred with the value measured during auto color registration performed from the
control panel.
< User Check >
- Check if the toner cartridges are set in the correct order of colors.
- Replace the toner cartridge.
- Replace the drum unit.
- If the belt unit has a scratch, replace it.
- If “WT Box End Soon” is displayed on the LCD and the belt unit has dirt, replace the waste
toner box.
■ Error code 9A02
Dot counter or develop roller counter of color toner has reached the upper limit during auto
color registration performed from the control panel.
< User Check >
- Replace the corresponding toner cartridge.
Registration
Registration failed. Turn the power off and then back on again.
Step Cause Remedy
1
Dirt on the registration mark
sensor L/registration mark
sensor R
Clean the registration mark sensor L/
registration mark sensor R.
2
Connection failure of the
registration mark sensor L PCB/
registration mark sensor R PCB
harness
Reconnect the registration mark sensor L
PCB/registration mark sensor R PCB
harness.
3
Failure in printed measurement
pattern image
If failure occurs when printing “2D3S
YMCBWKW_A” in “Function code 71”,
refer to
“4.3 Troubleshooting for Image Defects” in
this chapter and take a measure.
4
Registration mark sensor L or
registration mark sensor R failure
Replace the registration mark sensor unit.
5
Main PCB failure
Replace the main PCB ASSY.
Registration
Registration failed. Insufficient Toner for Registration.
Step Cause Remedy
1 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