Brother HL-4040CN Service Manual page 53

Error code CE
No Waste Toner
Install the Waste Toner Box. Refer to the User's Guide for how to
install.
Waste toner box is not installed into the machine.
User Check
- Check if the waste toner box is installed into the machine correctly.
Step
1 Harness connection failure of
belt cleaner release sensor
PCB ASSY
2 Belt cleaner release sensor
PCB failure
3 Belt cleaner release solenoid
failure
4 Engine PCB failure
Error code CF
Waste Toner Full
Replace the Waste Toner Box. Refer to the User's Guide for how to do
it.
Waste toner box full
User Check
- Replace the waste toner box with a new one.
Step
1 Waste toner sensor failure
2 Harness connection failure of
waste toner near/full sensor
ASSY
3 Engine PCB failure
Cause
Check the harness connection of the belt cleaner
release sensor PCB ASSY and reconnect it.
Check the sensor performance following the
procedure described in
any problem occurs, replace the belt cleaner
release sensor PCB ASSY.
Replace the belt cleaner release ASSY.
Replace the engine PCB ASSY.
Cause
Check the sensor performance following the
procedure described in
any problem occurs, replace the waste toner
near/full sensor ASSY.
Check the harness connection of the waste toner
near/full sensor ASSY and reconnect it.
Replace the engine PCB ASSY.
1-36
Remedy
"Maintenance mode
Remedy
"Maintenance mode
Confidential
32". If
32". If