Brother DCP-7090 Service Manual page 92

 Error code 4000
Number of the drum unit rotations reaches the upper limit soon.
Error code 4200
Number of the drum unit rotations has reached the upper limit. (Printing does not stop.)
<User Check>
• Prepare a new drum unit.
Step
If the error display is not cleared after
1 the drum unit in the toner box model
has been replaced with a new one.
Replace the drum unit with a new
one and reset the drum counter.
2
If the error display is not cleared,
the main PCB is faulty.
 Error code 4B01
Dot counter of the toner cartridge or develop roller counter reaches the upper limit soon.
Error code 4B06
The amount of toner supplied of the toner box reaches the upper limit soon.
<User Check>
• Prepare a new toner cartridge.
Step
1 Main PCB failure
 Error code 4C01
Dot count or develop roller counter of the toner cartridge in models without toner box has
reached the upper limit in the toner stop mode.
Error code 4C06
The amount of toner supplied of the toner box has reached the upper limit.
Error code 4D01
Dot count or develop roller counter of the toner cartridge in models without toner box is
reaching the upper limit in the continuous printing mode.
Error code 4E01
Toner cartridge in models without toner box has reached the upper limit in the continuous printing mode.
<User Check>
• Replace the toner cartridge whose counter reached the upper limit.
Step
Replace the toner cartridge or toner
box with a new one and reset the
1
toner counter. If the error display is
not cleared, the main PCB is faulty.
Cause
Cause
Cause
2-52
Remedy
Refer to "2.3 Resetting Drum Counter" in
Chapter 5 and perform the manual new
drum detection.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
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