Ricoh infoprint 1222 Service Manual page 54

Infoprint 1222
RAM Memory Error
This error indicates RAM failure. Remove DIMM(s) and re–POR the
printer. If the error persists, replace the card. If the error subsides,
check each DIMM independently. Replace faulty DIMM.
Note: The alarm is not activated for this error.
Diagnostic Information
2-19