Oki Data CONFIDENTIAL
44043511TH Rev.2
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5.2.5 Precautions in EEPROM Replacement (1200 dpi printer)
When a 1200-dpi printer displays a message Unauthorized Software 004/SoftwareNotAuthorised
004 on its operation panel, does not properly print its model name in printing its configuration,
or causes a toner mismatch error, its EEPROM may be faulty, or may be rewritten with new
data. When such an error is not remedied by executing FactoryDefault, the EEPROM should be
replaced with maintenance EEPROM (FactoryDefault should be executed after the EEPROM is
replaced).
The maintenance EEPROM for a 1200 dpi printer is prepared separately for each model with
the model No. and other data written in advance at Fukushima factory. This is to eliminate the
necessity to download the file from a PC during replacement on site.