Brother HL-4140CN Service Manual page 106

■ Error code CE
No Waste Toner
Install the Waste Toner Box. Refer to the User's Guide for instructions.
The waste toner box is not installed.
<User Check>
- Check if the waste toner box is installed into the printer.
- Replace the waste toner box with a new one.
Step
1 Waste toner sensor failure
2 High-voltage power supply PCB
failure
3 Main PCB failure
■ Error code CF
Replace WT Box
Replace the Waste Toner Box. Refer to the User's Guide for instructions.
Waste toner box full. (The sensor detects that the waste toner is full.)
<User Check>
- Replace the waste toner box with a new one.
Step
1 Harness connection failure of
waste toner sensor
2 Waste toner sensor failure
3 High-voltage power supply PCB
failure
4 Main PCB failure
Cause
Cause
2-75
Remedy
Check the sensor performance following
the procedure described in
32". If any problem occurs, replace the
waste toner sensor.
Replace the high-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
Remedy
Check the harness connection of the
waste toner sensor and reconnect it.
Check the sensor performance following
the procedure described in
32". If any problem occurs, replace the
waste toner sensor.
Replace the high-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
"Function code
"Function code
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