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.
Code: E744-6000
Description: Communication error with Wireless LAN PCB
Causes: 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 Wireless LAN PCB. 5. Replace the Main Controller PCB.
Code: E805-0005
Description: Sub Fan error
Causes: The Sub Fan was locked for a specified consecutive period of time.
Remedy: 1. Check the connection of the Sub Fan. 2. Replace the Sub Fan.
Code: E806-0000
Description: Main Fan error
Causes: The Main Fan was locked for a specified consecutive period of time.
Remedy: 1. Check the connection of the Main Fan. 2. Replace the Main Fan.