Description: Unknown file. Check file format. Turn off printer, wait a while, then turn it on again. MIT data transfer failure Failed to write MIT data on its transmission.
Remedy: 1. Execute "Initialize Paper Type" from the system settings. (Note: All paper information will be reset to its factory defaults and additional Paper deleted.) 2. Upgrade the firmware in download mode. 3. Replace the main controller PCB.
Code: x-4049
Description: Unknown file. Check file format. Turn off printer, wait a while, then turn it on again. Wrong transfer ROM data model Files for a different model have been transferred on firmware update.
Remedy: 1. Restart the printer in service mode to clear the error (this error won't occur when FUT is used). 2. Start in download mode to upgrade the firmware. 3. Replace the main controller PCB