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Code :

Code: 025
Display: Service call 025:Error
Description: CU Font ROM Hash Check Error
Causes: A font ROM hash check error was detected. (On printers for domestic market only)

Code: 030
Display: Service call 030:Error
Description: CU RAM Check Error
Causes: Does error display reappear?

Code: 031
Display: Service call 031:Error
Description: CU Optional RAM Check Error
Causes: Is RAM DIMM set properly? Is error recovered by replacing RAM DIMM?

Code: 036
Display: Service call 036:Error(C5900)
Description: RAM Spec Error Unsupported DIMM specification of the CU RAM
Causes: Is a genuine RAM DIMM in use? Is the RAM DIMM installed properly? Is the fault recovered when the RAM DIMM is replaced?

Code: 040
Display: Service call 040:Error
Description: CU EEPROM Error
Causes: Does error display reappear?

Code: 041
Display: Service call 041:Error
Description: CU Flash Error Flash ROM Error on the CU board.
Causes: Does error display reappear?

Code: 042 ... 045
Display: Service call 042:Error ~ 043:Error 045:Error
Description: Flash File System Error
Causes: Access to the Flash ROM directly mounted on the CU PCB failed.

Code: 051
Display: Service call 051:Error(C5900)
Description: CU Fan Error Abnormal CPU cooling fan on CU board.
Causes: Is CU Fan connector set properly? Is error recovered by replacing fan?

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