41316401TH Rev.9 94 /Oki Data CONFIDENTIAL5. TROUBLESHOOTING PROCEDURES5.1 Before Troubleshooting(1) Check the basic check items covered in the user’s manual.(2) Obtain much information about problems from users whenever possible.(3) Perform inspections in conditions close to those in which problems occurred.5.2 Checking before Troubleshooting Image Problems(1) Is the printer operating environment proper?(2) Has the consumables (toner, drum cartridges) been replaced properly?(3) Is the paper proper? Refer to the paper specification.(4) Are the image drum cartridges placed properly?5.3 Precautions in Troubleshooting Image Problems(1) Do not touch the surface of the OPC drum with hands or allow foreign matter to contact it.(2) Do not expose the OPC drum to direct sunlight.(3) Do not touch the fuser unit with hands as it is hot.(4) Do not expose the image drums to light for five minutes or more at room temperature.5.4 Preparation for Troubleshooting(1) Control panel displayThe failure status of the printer is provided on the LCD (liquid crystal display) of the operatorpanel.Take appropriate corrective actions according to messages appeared on the LCD.5.5 TroubleshootingWhen problems occur in the printer, troubleshoot them using the following procedure:A problem occurred.Problem shown byLCD messageImage problem (orProblem not shownby LCD message)Perform close troubleshootingusing the troubleshootingflowchart (see Section 5.5.2).Perform close troubleshootingusing the troubleshootingflowchart (see Section 5.5.3).Perform troubleshootingusing the LCD message list(see Section 5.5.1).
