73
Self Diagnostic Error Codes
Code
Cause/Description
Remedy
072
Engine I/F Error. I/F error between PU-CU. Is CU
Assembly installed correctly?
Replace the CU Board
Replace the PU Board
073
Video Error. Error is detected when expanding of the
video data. (Illegal data is received.)
Decrease resolution, and execute printing again.
Replace the CU PCB
074
Video Error. Error is detected during expanding of the
image data.
Decrease resolution, and execute printing again.
Replace the CU PCB
075
Video Error. Error is detected during expanding of the
image data.
Replace the CU Board
081
Parameter matching check error. EEPROM or Flash
cannot read/write normally.
Replace the CU Board
104
Engine EEPROM read/write error is detected.
Replace the PU Board
106
Engine control logic error.
Replace the PU Board
111
Duplex unit of another model is detected.
Install the correct Duplex unit.
112
The 2
nd
tray of another model is detected.
Install the correct 2
nd
tray.
113
The 3rd tray of another model is detected.
Install the correct 3rd tray.
121
High voltage power supply I/F error. Is the cable
between PU PCB and High voltage power supply
connected normally? Is there defective contact?
Check for defective contact in the high voltage system.
Replace the High voltage power Supply.
122
Low voltage power supply fan error. Does the fan in
the low voltage power supply (bottom right on the
front) operate normally? Is the fan connector
connected normally?
Confirm connection of the fan connector.
Replace fan motor
Replace PU PCB
123
Environment humidity abnormal/ Humidity sensor is
not connected.
Power OFF/ON.
Replace the Control panel PCB
124
Environment temperature abnormal
Power OFF/ON.
Replace the Control panel PCB
126
Dew condensation is detected in MFP. It can easily
occur when the MFP is brought indoors directly from
outdoors. Leave the MFP for two hours under normal
room temperature. Then, turn OFF the power and back
ON. Does the error reoccur?
Power OFF/ON.
Replace the Control panel PCB
127
Fixing/ ventilation fan error
Confirm connection of the fan connector.
Replace fan motor
Replace PU PCB
128
05:
Fixing unit end cooling fan error.
07:
Cooling fan on the side of the power supply block
(side fan) error
Confirm connection of the fan connector.
Replace fan motor
Replace PU PCB
