Error code: 00020000
<- BackNVRAM error.
Explanation:
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).
Remedy:
1. Download the parameter data from another model. Make all necessary adjustments.
2. Replace the MAIN Board (C472 MAIN).