59
Code
Cause/Description Remedy
802 – 803
805
807
808
SU Exception
Turn off and on the MFP.
Replace the SU board.
811 – 813
SU Communication Error
Communication error between the Controller and the Scanner Unit is
detected.
Turn off and on the MFP.
890
SU System Memory Overflow
Turn off and on the MFP.
Replace the SU board.
901 – 904
Belt temperature error
901: Short circuit
902: Open circuit
903: High temperature
904: Low temperature
Is the cable from the belt thermistor to the CU/PU board connected
properly?
Connect the cable properly.
Turn off and on the MFP.
Replace the belt thermistor.
918
An alarm of Duplex Fan was detected.
An error of a fan inside the Duplex.
Review whether or not the Duplex is installed properly.
Review whether or not the fan is installed properly.
Replace the fan
923
A lock error with black image drum
The image drum does not revolve properly.
Be sure the image drum is properly installed properly.
Replace the image drum unit.
Replace the image drum motor.
928
Fuser motor lock error
Check that the fuser is properly installed.
Replace the fuser.
Replace the fuser motor.
933
Tray-2 CPU clock frequency error
941 – 944
PU Error
A PU error was detected.
941 : Watch Doc Timer Error
942 : Detection of Unassigned Interruption
943 : CPU Error Detection
944 : Dcon Access Error
Turn off and on the MFP.
When this error occurs again, replace the CU/ PU board.
980
Media jamming error around fuser
Media is jammed by entangling around the fuser.
Turn off the MFP.
Replace the fuser.
983
Duplicate toner cartridge detection error
Multiple toner cartridges for the same color were detected.
Install toner cartridges for specified colors at the proper positions
990
Waste toner sensor detection error
Install the K toner cartridge.
Be sure of cable connection, and then perform board replacement.
Note! With the MFP’s temperature not more than 0ºC, Service call errors 168 Error, 171 Error, 175 Error,
903 Error and 904 Error may occur. After turn off the MFP, turn on the MFP after the MFP warms.