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Confidential
■ Error code CB
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.
■ Error code CE
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.
No Belt Unit
Open the Top Cover, pull out all 4 Drum Units completely and install the Belt
Unit.
Step Cause Remedy
1 Harness connection failure of
registration mark L PCB ASSY
Check the harness connection of the
registration mark L PCB ASSY and
reconnect it.
2 Harness connection failure of
shutter solenoid of the density
sensor
Check the harness connection of shutter
solenoid of the density sensor and
reconnect it.
3 Engine PCB failure Replace the engine PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
5 Registration mark L PCB failure Replace the registration sensor holder
ASSY.
No Waste Toner
Install the Waste Toner Box. Refer to the User’s Guide for instructions.
Step Cause Remedy
1 Harness connection failure of
waste toner sensor
Check the harness connection of the
waste toner sensor and reconnect it.
2 HVPS control PCB failure Replace the HVPS control PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
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