Causes: Communication error with CCU/modem NCU PCB type error
Remedy: 1. Install the set of the controller firmware. 2. Replace the NCU PCB. 3. Replace the Main Controller PCB.
Code: E736 0001
Description: Error in ROM for backing up fax data
Causes: An error occurred in ROM for backing up fax data
Remedy: 1. Install the set of the controller firmware. 2. Replace the Main Controller PCB.
Code: E744 0001
Description: Language file version error
Causes: Language file version was not matched with the main program.
Remedy: Install the set of the controller firmware.
Code: E744 0002
Description: Language file size error
Causes: The size of the language file exceeded the upper limit.
Remedy: Install the set of the controller firmware.
Code: E744 1001
Description: Firmware version error
Causes: Versions of the main program and the start-up program were not matched.
Remedy: Install the set of the controller firmware.
Code: E744 4000
Description: Engine ID error
Causes: Invalid engine connection was detected.
Remedy: 1. Turn OFF and then ON the main power. 2. Check the DC Controller PCB. 3. Install the DC 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.)