Brother DCP-8110DN Service Manual page 88

Error codes 7B00 and 7C00
These errors do not usually occur during normal use. The possible causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
---
An unidentified error occurred.
Step
1 Main PCB failure
Error code 7D00
Drum Error
Open the Front Cover and slide the green tab across the Drum Unit several times.
Detected discharge that may be attributable to dirty corona wire on the drum unit.
<User Check>
• Slide the green tag of the drum unit left and right two to three times to clean the corona
wire.
• Replace the drum unit with a new one.
Step
High-voltage power supply PCB
1
failure
2 Main PCB failure
Error codes 7E00 and 7F00
These errors do not usually occur during normal use. The possible causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
---
An unidentified error occurred.
Step
1 Main PCB failure
Error code 8000
Size mismatch
Reload correct paper.
The registration front sensor detected that the paper length was too short when faxing or
printing a list or report.
<User Check>
• Set paper larger than letter size in the tray.
Step
Registration front sensor failure Replace the registration front/rear sensor PCB
1
2 Main PCB failure
Cause
Replace the main PCB ASSY.
Cause
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Cause
Replace the main PCB ASSY.
Cause
ASSY.
Replace the main PCB ASSY.
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Remedy
Remedy
Remedy
Remedy
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