E Code Detail Code Item Description
E744 5000
Description Error in the Control Panel PCB (microcomputer)
Remedy 1. Check the Control Panel PCB, and install the firmware (PANEL).
2. Install the set of the controller firmware.
3. Replace the Main Controller PCB.
E744 6000 Title Communication error with Wireless LAN PCB
Description Communication with the Wireless LAN PCB could not be established.
Remedy 1. Turn OFF and then ON the main power.
2. Check the connection of the Wireless LAN PCB.
3. Install the set of the controller firmware.
4. Replace the Main Controller PCB.
E744 7000 Title Main Controller PCB error
Description An error in the microcomputer which retains fax job information of the Main Controller PCB
Remedy 1. Install the firmware of BKUP.
2. Install the set of the controller firmware.
3. Replace the Main Controller PCB.
E746 0000 Title Main Controller PCB error
Description Main Controller communication error occurred (other than scan).
Remedy 1. Install the set of the controller firmware.
2. Replace the Main Controller PCB.
E766
xxxx
*1
Title Firmware error
Description An error in connection occurred due to controller software.
Remedy Due to firmware error, the possibility of solving the error by replacing the Main Controller PCB
is low. Check the installed engine again.
E766 8000 Title Firmware error
Description Information at color displacement correction could not be obtained.
Remedy 1. Install the DC Controller firmware.
2. Install the set of the controller firmware.
3. Replace the DC Controller PCB.
E766 9000 Title Scanner power state error (firmware-dependent)
Description Error in power state of the Laser Scanner Unit (firmware-dependent)
Remedy 1. Install the set of the controller firmware.
2. Replace the Laser Scanner Unit.
E805 0005 Title Duplex Cooling Fan error
Description The Duplex Cooling Fan failed to rotate at the specified revolution.
Remedy 1. Check the connector between the Duplex Cooling Fan and the DC Controller PCB.
2. Replace the Duplex Cooling Fan.
3. Replace the DC Controller PCB.
E806 0000 Title Fixing Power Supply Cooling Fan error
Description The Fixing Power Supply Cooling Fan failed to rotate at the specified revolution.
Remedy 1. Check the connector between the Fixing Power Supply Cooling Fan and the DC Con-
troller PCB.
2. Replace the Fixing Power Supply Cooling Fan.
3. Replace the DC Controller PCB.
E808 0000 Title Low-voltage power supply failure detection
Description Printer detected low-voltage power supply failure.
Remedy 1. Check the connector between the Power Supply Unit and the DC Controller PCB.
2. Replace the Power Supply Unit.
3. Replace the DC Controller PCB.
E840 0000 Title Error in pressure release mechanism of the Fixing Assembly
Description Although the Fixing Assembly started moving to the home position, it failed to be at the posi-
tion.
Remedy 1. Replace the Fixing Drive Assembly.
2. Replace the Fixing Pressure Release Cam.
7. Error/Jam/Alarm
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