Remedy: Is the error issued again? Yes If RAM DIMM is installed, remove it, and turn the power off and on again. Replace the TBR/TB2-6 PCB. Install the RAM DIMM again. Replace the RAM DIMM.
Code: 020
Display: service 020:Error
Description: CU ROM Hash Check Error
Remedy: Does error display reappear? Yes Power OFF/ON Replace TBR/TB2-6 PCB.
Code: 025
Display: Service call 025:Error
Description: CU Font ROM Hash Check Error
Remedy: A font ROM hash check error was detected. (On printers for domestic market only) Power OFF/ON Replace TBR/TB2-6 PCB.
Code: 030
Display: Service call 030:Error
Description: CU Optional RAM Check Error
Remedy: Does error display reappear? Yes Power OFF/ON Replace TBR/TB2-6 PCB.
Code: 031
Display: Service call 031:Error
Description: CU Optional RAM Check Error
Remedy: Is RAM DIMM set properly? Is error recovered by replacing RAM DIMM? Reset RAM DIMM. Replace RAM DIMM. Replace TBR/TB2-6 PCB.
Code: 036
Display: Service call 036:Error (C5900)
Description: RAM Spec Error Unsupported DIMM specification of the CU RAM
Remedy: Is a genuine RAM DIMM in use? Is the RAM DIMM installed properly? Is the fault recovered when the RAM DIMM is replaced? Use genuine RAM DIMM. Reset RAM DIMM. Replace RAM DIMM. Replace TBR/TB2-6 PCB