Brother DCP-9010CN Service Manual page 141

■ Error code CB
No Belt Unit
Open the Top Cover, pull out all 4 Drum Units completely and install the Belt
Unit.
Belt unit is not installed into the machine.
(The density sensor detects that the belt unit is not installed.)
<User Check>
- Check if the belt unit is installed into the machine.
Step
1 Harness connection failure of
registration mark L PCB ASSY
2 Harness connection failure of
shutter solenoid of the density
sensor
3 Engine PCB failure
4 Main PCB failure
5 Registration mark L PCB failure
■ Error code CE
No Waste Toner
Install the Waste Toner Box. Refer to the User's Guide for instructions.
Waste toner box is not installed into the machine.
(It is detected by turning ON and OFF the waste toner sensor using a shutter.)
<User Check>
- Check if the waste toner box is installed into the machine.
- Replace the waste toner box with a new one.
Step
1 Harness connection failure of
waste toner sensor
2 HVPS control PCB failure
3 Main PCB failure
Cause
Cause
3-49
Remedy
Check the harness connection of the
registration mark L PCB ASSY and
reconnect it.
Check the harness connection of shutter
solenoid of the density sensor and
reconnect it.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
Replace the registration sensor holder
ASSY.
Remedy
Check the harness connection of the
waste toner sensor and reconnect it.
Replace the HVPS control PCB ASSY.
Replace the main PCB ASSY.
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