43856301TH Rev.3 146 /Oki Data CONFIDENTIAL 7. Troubleshooting and repair procedureDisplay Cause Error details Remedial measureRe-start the printer.203: error204: error207: error208: error214: errorFOC: errorFFF: errorCU programerror(The errornumbers203 through214 do notoccur underthe normaloperation.)Illegal processing is executedby the CU program.After turning offthe power, checkfor the normalconnectionbetween the CUboard and thePU board. Then,turn on the poweragain.Service call230: errorRFID Readernot InstalledRFID read device errorDoes this error recur?YesYesCheck for normalconnection of theRFID R/W board.Replace the RFIDR/W. Replace theP6 X board.Service call231: errorRFID readerI/F errorInterface error with the RFIDreader is detected.01: Communication errorbetween the RFID readerand the engine circuitboards.02: Error in the wireless circuitof the RFID reader03: Communication errorbetween the RFID readerand the toner cartridge.04: Error is detected in theRFID toner cartridge.(In more than 4)01: Same as theerror no. 23002: Replace theRFID R/Wboard.03: Check fornormalconnection ofthe antennacable.04: Check ifquantity of thetoner cartridgeis correct ornot.Re-start the printer.901: error~904: errorNote)Abnormaltemperatureof belt901: Short-circuit902: Opencircuit903: Hightemperature904: LowtemperatureIs the cable from belt thermistorto the high voltage boardconnected normally?Does this error recur?NoYesNoRe-connect thecables normally.Turn on the poweragain.Replace the beltthermistsor.Display Cause Error details Remedial measureRe-start the printer.918: errorDuplexFAN AlarmCautionFan error inside the duplex unit.Does the error recur when thepower is turned off once andback on?Does the error recur when thepower is turned off once andback on?YesYesCheck if theDuplex unit isinstalled normallyor not.Check if the fansare installednormally or not.Replace the fan.Re-start the printer.923: errorBlack imagedrum lockerrorThe K ID does not rotatenormally.Does the error display recurwhen the power is turned offonce and back on?YesYesCheck if the KID is installednormally or not.Replace the K IDunit.Replace the K IDmotor.Service call928: errorFuser motorlock errorFuser does not rotate normally.Does this error recur?YesYesCheck if thefuser is installednormally or not.Replace the fuser.Replace the fusermotor.Service call980: errorMediawrappedaround thefuser errorMedia has wrapped around thefuser. Turn off the power.Replace the fuser.Service call982: error4th traydetectionerrorThe 4th tray is installed. Remove the 4thtray.Service call983: errorError dueto detectionof the tonercartridgesof the samecolorTwo or more toner cartridges ofthe same color are detected.Install the cartridgeof the specifiedin the specifiedposition.SDRAM ERROR CU board(CU) DCONaccess error Does this error recur? YesTurn on the poweragain.Replace the CUboard.