Brother DCP-L8400CDN Service Manual page 105

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Error code 9A03
Registration
Registration failed. Press [Retry], and try again.
Error occurred during patch data printing in 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.
Step
1 Dirt on 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
3 Failure in printed measurement
pattern image
4 Registration mark sensor L or
registration mark sensor R failure
5 Main PCB failure
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Error code A000
Scan Unable
Remove the original document. Turn the power off, then on again.
Upon scanning the second side in duplex scanning, scanned data cannot be output with the
required number of pixels and image processing is not completed successfully.
Step
1 Second side CIS unit calibration
data error
2 Second side CIS unit failure
3 Main PCB failure
Cause
Clean the registration mark sensor L/
registration mark sensor R.
Reconnect the registration mark sensor L
PCB/registration mark sensor R PCB
harness.
If failure occurs when printing "2D3S
YMCBWKW_A" in
refer to
"4.3 Troubleshooting for Image Defects" in
this chapter
Replace the registration mark sensor unit.
Replace the main PCB ASSY.
Cause
Perform
"1.3.19 Acquisition of white level data and
setting of CIS scanning area (Function
code 55)" in this
Replace the second side CIS unit.
Replace the main PCB ASSY.
2-75
Remedy
"Function code
and take a measure.
Remedy
"Function code 55". (Refer to
chapter.)
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