Error code: 00020003

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Boot program sum error

The printer causes this error and stops operation when it detects that the boot program of the firmware is corrupted. This error occurs only when turning the power ON.
Failed to install the program.
Flash ROM failure.
SDRAM failure.
The address/data bus on the Main Board is broken or its contact is poor.

Remedy :

1. Installing Firmware.
2. Replace the MAIN BOARD ASSY.