Description: Firmware version error
Version of the main program and the version of the start-up program was not matched.
Remedy: Install the set of the controller firmware.
Code: E744-4000
Description: Engine ID error
Invalid engine connection was detected.
Remedy: 1. Turn OFF and then ON the main power. 2. Check the Engine Controller PCB. 3. Install the Engine Controller PCB. 4. Install the set of the controller firmware. 5. Check the model code. (When the model code and the engine code are mismatched, E744-4000 occurs.)
Code: E744-5000
Description: Error in the Control Panel PCB
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.
Code: E744-6000
Description: Communication error with the Wireless LAN PCB
Unable to communicate with the Wireless LAN.
Remedy: 1. Turn OFF and then ON the main power. 2. Check the connection of the Wireless LAN. 3. Install the set of the controller firmware. 4. Replace the Main Controller PCB.
Code: E744-7000
Description: Main Controller PCB error
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.
Code: E746-0000
Description: Main Controller PCB error
Main Controller communication error occurred (other than scan).
Remedy: 1. Install the set of the controller firmware. 2. Replace the Main Controller PCB.