Description: EEPROM communication error – Device access inhibited
Causes: When the machine retries three times after an error report has been received in the EEPROM communication, but the machine does not recover the communication, this SC is issued. • Noise • EEPROM not connected • EEPROM mounted in reverse • EEPROM defective
Remedy: EEPROM not connected: • Reinstall the EEPROM on the MPU. EEPROM mounted in reverse: • Mount the EEPROM correctly on the MPU. EEPROM defective: • Replace the EEPROM on the MPU.
Code: 669-07
Description: EEPROM communication error – Buffer full error
Causes: When the machine retries three times after an error report has been received in the EEPROM communication, but the machine does not recover the communication, this SC is issued. • Noise • EEPROM not connected • EEPROM mounted in reverse • EEPROM defective
Remedy: EEPROM not connected: • Reinstall the EEPROM on the MPU. EEPROM mounted in reverse: • Mount the EEPROM correctly on the MPU. EEPROM defective: • Replace the EEPROM on the MPU.
Code: 669-08
Description: EEPROM communication error – Request parameter error
Causes: When the machine retries three times after an error report has been received in the EEPROM communication, but the machine does not recover the communication, this SC is issued. • Noise • EEPROM not connected • EEPROM mounted in reverse • EEPROM defective
Remedy: EEPROM not connected: • Reinstall the EEPROM on the MPU. EEPROM mounted in reverse: • Mount the EEPROM correctly on the MPU. EEPROM defective: • Replace the EEPROM on the MPU.
Code: 790-00
Description: Option PFU stack over When the power is turned ON, it is detected that the number of stacked PFUs exceeds the specified value.
Causes: The number of stacked banks exceeds the specified value.
Remedy: Install the optional PFU correctly. Only 2 optional PFUs can be installed on this machine.
Code: 903-00
Description: Total counter error • If the counter values (4 bits) for the machine and mirroring agree, the SUM value of the machine is recalculated, and it does not agree with the SUM value of upper 4 bits, this SC is issued. • If the counter values (4 bits) for the machine and mirroring do not agree, recalculate the SUM values for the machine and mirroring. If the values for both machine and mirroring do not agree with the SUM value of upper 4 bits, this SC is issued.
Causes: EEPROM defective
Remedy: Replace the EEPROM.
Code: 990-00
Description: Fail-safe SC • An unexpected error occurred on the software.