Ricoh D093 - Data Overwrite Security SD Card Error; File Format Converter (MLB) Error; TPM Authentication Error

Service Call Tables
SM 7-43 D093/D094
Trouble-
Shooting
877 B Data Overwrite Security SD card error
CTL
An error occurred, preventing successful execution of the Data Overwrite
Security function, even though it has been set up and enabled.
 DOS card is not inserted completely into the SD card slot
 DOS card has been removed from the SD card slot.
 DOS card is damaged.
Note:
 If the SD card has been removed (or was not installed correctly),
switch the machine off, insert the SD card, then switch on the machine
again.
 If the SD card has been damaged, procure a new SD card, replace
the NVRAM, then do the DOS option installation.
878 D TPM authentication error CTL
The system firmware could not be authenticated by the TMP security chip.
 System firmware updated incorrectly.
 Flash ROM on controller board defective.
 Replace controller board.
880 B File Format Converter (MLB) error
CTL
A request to access the MLB was not answered within the specified time
(60 sec.).
 File format converter board defective