Remedy: 1. Install the set of the controller firmware. 2. Replace the Main Controller PCB.
Code: E733-0000
Description: Printer communication error
Causes: Communication error between the Engine Controller PCB and the Main Controller PCB occurred.
Remedy: 1. Check the connector connection between the Engine Controller PCB and the Main Controller PCB. 2. Install the set of the controller firmware. 3. Replace the Main Controller PCB. 4. Replace the Engine Controller PCB.
Code: E736-0000
Description: Communication error with CCU/modem
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 NCU PCB. 3. Replace the Main Controller PCB.
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 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
Causes: 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.