OKI Data Infotech Corporation CONFIDENTIAL
5-1
Chapter 5 Troubleshooting
(Engine Section and USB Controller Section)
This chapter describes troubleshooting for the engine section and USB controller section of the
printer.
Error messages are rarely displayed for poor print quality. But for other cases of error, the error
LED lights up, and the relevant error message appears on the LCD.
Poor print quality is checked mainly by printing a NOZZLE CHECK pattern. When an error
message appears, check the possible causes and the location according to the error message
and then take appropriate measures. If no error message appears, find the possible causes and
the location from the symptom and take appropriate measures.
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