Code :

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.