43856301TH Rev.3 203 /Oki Data CONFIDENTIAL 7. Troubleshooting and repair procedureError processing flow when error 252, 253, 256 has occurred (HDD related error - )Error display Error contentsError 252 Data protection kit-A1 does not exist.Error 253 User’s data protection kit-A1 does not exist, but different dataprotection kit-A1 is installed with the HDD.Error 256 Invalid HDD is installed.Step1Re-connect the printer to the user’s dataprotection kit-A1 that is connected to theprinter in the very beginning when user startsusing the system.No ( If user’s data protection kit-A1 thatis connected in the very beginningdoes not exist )YesMaintenance is complete.(User HDD has been removed.)Step2Does the printer work normally when themaintenance CU board and the data protectionkit-A1 for maintenance use are installedinstead of original boards?NoYesMaintenance is complete.(User HDD has been removed.)Re-setting of IP address andothers are required:Note 1, 3 and 4Step3Replace the printer. (Analysis is not possible.)Note1 : When EEPROM of user’s board is used, error 253 (HDD unmatch) occurs.Re-set the user environment such as IP address by using the EEPROM ofmaintenance board.Note3 : Data protection kit A1 after replacing should be collected by either of thefollowing methods1. Disassemble the kit, and deliver only HDD storing user secret data to auser.2. Take any measures to prevent information leak.Note4 : When the CU board is replaced, the printer cannot be used without thespecified HDD because the user’s CU board has been linked to the specificHDD.Error processing flow when error 251, 253 has occurred (HDD related error - )Error display Error contentsError 251 HDD hardware failureError 255 HDD kit hardware failureStep1Does the printer work normally when themaintenance CU board and the dataprotection kit-A1 for maintenance use areinstalled instead of original boards?NoYesMaintenance is complete.(HDD failure)Re-setting of IP address andothers are required:Note 1, 3 and 4Step2Replace the printer. (Analysis is not possible.)Note1 : When EEPROM of user’s board is used, error 253 (HDD unmatch) occurs.Re-set the user environment such as IP address by using the EEPROM ofmaintenance board.Note3 : Data protection kit A1 after replacing should be collected by either of thefollowing methods1. Disassemble the kit, and deliver only HDD storing user secret data to auser.2. Take any measures to prevent information leak.Note4 : When the CU board is replaced, the printer cannot be used without thespecified HDD because the user’s CU board has been linked to the specificHDD.