45376001TH Rev.1
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Oki Data CONFIDENTIAL
2. Operating instructions
General of the density correction
The density correction is operated by reading the pattern for correction printed on the belt
with a sensor set in the sensor shutter under the belt unit.
Density correction auto-start timing
at the power on
Low or Toner Empty has disappeared
The amount of toner of the pattern, the toner dirt and the open-close trouble of the shutter
etc. may lead to correction error.
However, as the error message may not display even if the error is occurred, it is
necessary to perform the density correction (see 5.3.1.7) by the utilization of the self-
diagnostic mode and confirm the error display.
Density correction pattern
Density sensor
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