Brother HL-L8250CDN Service Manual page 72

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Error code 4700
WT Box End Soon
-
The waste toner sensor detected that the waste toner box is almost full.
Error code 4800
Replace WT Box
Replace the Waste Toner Box inside the machine.
After the waste toner sensor detected that the waste toner box was almost full, pages more
than the specified number have been printed.
< User Check >
- Replace the waste toner box.
Step
1 High-voltage power supply PCB
failure
2 Main PCB failure
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Error code 4B01
Toner Low:BK
-
Dot counter of the toner cartridge (Black) or develop roller counter reaches the upper limit soon.
Error code 4B02
Toner Low:Y
-
Dot counter of the toner cartridge (Yellow) or develop roller counter reaches the upper limit soon.
Error code 4B03
Toner Low:M
-
Dot counter of the toner cartridge (Magenta) or develop roller counter reaches the upper limit
soon.
Error code 4B04
Toner Low:C
-
Dot counter of the toner cartridge (Cyan) or develop roller counter reaches the upper limit soon.
< User Check >
- Prepare a new toner cartridge.
Step
1 The toner counter is not reset
after the toner cartridge is
replaced with a new one
2 Main PCB failure
Cause
Cause
2-49
Remedy
Replace the high-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
Remedy
Refer to
"2.1 Toner Manual Reset Function" in
Chapter 5, and reset the toner counter.
Replace the main PCB ASSY.
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