Uneven Density Image Due To Dew Condensation Under A High Humidity Environment - Canon imageRUNNER ADVANCE C3330 Series Troubleshooting Manual

Copier Color | iR-ADV C3330/C3325/C3320 Series |
Uneven density image due to dew condensation under a high
humidity environment
[Symptom]
Uneven density image like the one shown in the below picture [A] may occur. The picture [B] shows the normal image and the
arrow indicates the paper feed direction.
[Reference] One or more of the following symptoms may occur: Vertical lines, diagonal lines, light image on both edges and toner
carrier on print. The picture [A] shows the image with all of the symptoms above combined.
[Cause]
When the device is installed in a high humidity environment, the drum and the charging roller absorb moisture and dew
condensation is generated on the surface of the drum. Printing in this condition brings the above symptom.
[Reference] The symptom also occurs when a drum cartridge with its sealing opened and had been left under a high humidity
environment is installed to the device and used.
[Service work]
When the aforementioned symptom has occurred, execute the following "Clean Condensation" mode. This cleaning mode was
added from the DC-CON Ver.12.02 onward.
This mode removes the dew condensation attached on the surface of the drum.
1) Confirm if the version of the DC-CON is Ver.12.02 or later. If the version is older than that, execute upgrading the version.
2) In Service Mode > COPIER > OPTION > DSPLY-SW > CLN-SEL, set the value to "1". (Default is "0".)
[Reference] By changing the above setting, "Clean Condensation" is displayed in the menu under the control panel.
3) User Mode > Adjustment/Maintenance > Maintenance > Clean Condensation > Press "Start" to execute the mode.
4) Make a test print after the cleaning and make sure that the symptom does not occur.
5) If the symptom has not improved, repeat the" Clean Condensation" process three to four times while keeping the value "1" set
in the step 2).
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