Error code: 00020000

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NVRAM error.

There may be a case where the parameter data in NVRAM is broken. In such a case, this message is displayed and the printer stops operating.

Cause of trouble:
NVRAM erase error or write error (check in 2 bytes).

1. Download the parameter data from another model. Make all necessary adjustments.
2. Replace the MAIN Board (C472 MAIN).