6. Procedures for RepairingOki Data CONFIDENTIAL44983601TH Rev.1 6-1 /6. Procedures for Repairing6.1 Troubleshooting(1) Check “8. Troubleshooting” of the user’s manual.(2) Collect the information of the status at the failure as much as possible.(3) Inspect the device in the status similar to the status at the failure occurrence.6.2 Points to be checked before modifying printing problems.(1) Check that the printer is used in appropriate environment conditions.(2) Check that consumables (image cartridge, image drum cartridge) are proper replaced.(3) Check that the image drum cartridge is proper set.6.3 Points to be checked when the printing problems are modified(1) Make sure not to touch the surface of the image drum or make extraneous materials touched on thesurface.(2) Make sure to avoid direct sunlight.(3) Make sure not to touch the fuser unit since it is hot during the operation.(4) Make sure not to exposure the image drum to the light for more than 5 minutes at ambient temperature.6.4 Preparation for Troubleshooting(1) Display of the operator panelThe failure status of the printer is displayed don the LCD of the operator panel. Take an appropriateaction as instructed by the messages displayed on LCD.B401/B411 B431