3-50
Confidential
■ Error code CF
Waste toner box full (500 pages are printed after the waste toner sensor sticks at ON.)
<User Check>
- Replace the waste toner box with a new one.
■ Error code D1
Modem initialization failed
■ Error code DE
The connector of the fuser unit thermistor is inserted incorrectly.
(It is detected that the edge temperature is lower than 60°C.)
Replace WT Box
Replace the Waste Toner Box. Refer to the User’s Guide for instructions.
Note:
The same message appears in the case of the error code F4.
Step Cause Remedy
1 Harness connection failure of
waste toner sensor
Check the harness connection of the
waste toner sensor and reconnect it.
2 Waste toner sensor failure Check the sensor performance following
the procedure described in “Function code
32”. If any problem occurs, replace the
waste toner sensor.
3 HVPS control PCB failure Replace the HVPS control PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
Machine Error D1
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
Print Unable DE
Turn the power off and then back on again.
Step Cause Remedy
1 Connection failure of fuser unit
thermistor connector
Check the connection of the fuser unit
thermistor connector and reconnect it.
2 Fuser unit failure Replace the fuser unit.
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