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Error code DE
When the center thermistor of the fuser unit is higher than the idle temperature, the side
thermistor detected a temperature lower than the specified temperature.
Error code DF
This error does not usually occur in the normal use. The conceivable causes are noise
around the installation site, fluctuation of the power supply voltage, and failures in the
software.
An unidentified error occurred.
Error code E0
An error occurred in the ROM check sum.
Print Unable DE
Turn the power off and then back on again.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1
Connection failure of the center
thermistor or side thermistor
harness of the fuser unit
Reconnect the center thermistor or side
thermistor harness.
2
Side thermistor or center
thermistor failure
Replace the fuser unit.
3 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
---
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
Print Unable E0
Turn the power off and then back on again.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1 Firmware installation failure Reinstall the latest firmware.
2 Main PCB failure Replace the main PCB ASSY.
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