Service Call Conditions 
SM Appendix  3-17  M018/M019 
Appendix: 
Trouble- 
Shooting 
Guide 
SC 6xx (Communication and Other Error) 
 
EEPROM Error 
An unexpected value exists in the initialization flag of the EEPROM 
669 
  EEPROM not initialized   
 Defective EEPROM 
1. Initialize the EEPROM. 
2. Replace the EEPROM. 
3. Replace the EGB. 
 
GAVD Communication Error 
The ID of the GAVD is not identified during initialization. 
The chip ID of the GAVD cannot be detected by the machine at power-on. 
690 
 Defective EGB 
1. Replace the EGB. 
 
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