• Code: E248-0003
• Description: The EEPROM on the reader controller PCB is faulty. The reader controller PCB is faulty.
  When data is written, the ID in the EEPROM and the ID in the ROM are found not to match.

• Code: E302-0001
• Description: The CCD/AP PCB is faulty. The wiring is faulty (short circuit, open circuit). The reader controller PCB is faulty.
  During shading, the reader controller PCB does not end shading in 1 sec.

• Code: E302-0002
• Description: The CCD/AP PCB is faulty. The wiring is faulty (short circuit, open circuit). The reader controller PCB is faulty.
  In stream reading, the edge white accumulation (processing) does not end after a period of 10 secs.

• Code: E315-0007
• Description: Main controller PCB, Hard disk drive
  When a start command is seen to the encoder of the compression/ extension element of the main controller, an end interrupt does not occur after 4 sec.

• Code: E315-0010
• Description: Main controller PCB, Hard disk drive
  When a start command is sent to the compression/extension element of the main controller at time of decoding, an end interrupt does not occur after 4 sec.

• Code: E412-0001
• Description: The cooling fan (FM1) is faulty. The ADF controller PCB is faulty.
  While the cooling fan is being driven, the lock signal (FMLCK) arrives for 100 msec or more.

• Code: E420-0001
• Description: The EEPROM is faulty. The ADF controller PCB is faulty.
  When the host machine's power switch is turned on, the backup data of the EEPROM cannot be read or the data, if read, has an error.

• Code: E421-0001
• Description: The EEPROM is faulty. The ADF controller PCB is faulty.
  Backup data cannot be written to the EEPROM or the data, if written, has an error.