MFP PWB SRAM memory individual data check sumerror.Detail MFPCause
The check sum value for individual data of thecommunication table and the sender registration doesnot match.MFP PWB SRAM trouble.MFP PWB trouble.Strong external noises.
Check & Remedy
Turn OFF/ON the power to initialize the data related tothe content of check sum error.Since the registered contents are deleted, register thedeleted contents again.Use SIM16 to cancel the error.
Replace the MFP PWB.
firmware upgrade it will be good starter..
SOURCE: sharp ar M451N F2 02
1.Improper cartridge(destination error,life cycle error)
2.Identification error
3.model error
4.type error
5.destination error
6.data abnormality
7misc error
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