44951501TH Rev.2
7-2
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
7.1 Before troubleshooting
(1) Check the basic check items described in the C301/C321/C331/C511/C531 user documentation.
(2) Obtain information as in much detail as possible from customers about in what situations troubles occurred.
(3) Perform checking under situations close to those where troubles occurred.
7.2 Points to check before dealing with image troubles
(1) Operating environment is proper.
(2) Consumables (the toner and image drum cartridges) have been replaced properly.
(3) There are no problems with paper. Refer to applicable paper specifications.
(4) The image drum cartridges are installed properly.
7.3 Precautions for dealing with image troubles
(1) Do not touch, or allow foreign matter to touch, the surfaces of the OPC drums.
(2) Do not expose the OPC drums to direct sunlight.
(3) The fuser unit is hot. Do not touch it.
(4) Do not expose the image drums to light for five minutes or more at room temperature.
7.4 Preparation for troubleshooting
(1) Operator panel display
C301/C321/C331/C511/C531 displays its trouble status on its operator panel LCD (liquid crystal display). Perform proper troubleshooting according to messages displayed on the LCD.
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