Sc845-01 To -05 - Ricoh MP 305 Plus Field Service Manual

6. Troubleshooting
During remote ROM update or ROM update, the SCS detected a write error (verify error)
regarding the data written to the Nand-Flash.
• SC842-01
At startup or recovery from Energy Save, the Nand-Flash status is read and the number of
unusable blocks exceeded the threshold.
• SC842-02
At startup or recovery from Energy Save, the Nand-Flash status is read and the number of
deleted blocks exceeded the threshold.
Possible Causes
• SC842-00
Nand-Flash is damaged.
• SC842-01
The number of unusable blocks have exceeded the threshold.
• SC842-02
The number of deleted blocks have exceeded the threshold.
Troubleshooting Procedures
Turn OFF then ON the main power.
Replace the controller board.

SC845-01 to -05

Error Name
Hardware Error during Firmware Auto Update
Type
D
Symptoms
Cannot complete firmware update while retrying three times.
Possible Causes
Hardware-related error occurs in a board.
The branch number of this SC represents where the error occurs.
-01: BiCU
-02: Controller Board
-03 or -04: Operation panel board
-05: FCU
460