Canon iR C6800 Series, Руководство по обслуживанию

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Chapter 13
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13.3.2.3.3 Uneven Density in Halftone Images
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Description
In a high temperature/humidity environment, the symptom can start to occur relatively early (around 100,000
images) after replacement of the primary charging wire/cleaning pad.
The uneven density tends to be conspicuous in color halftone images.
The uneven density tends to be found at the same area in all colors.
Cause
The symptom is caused by dirt on the primary charging wire or the dustblocking glass.
In particular, the cleaning pad tends to start deteriorating early (about 100,000 images) in a high temperature/
humidity environment.
Field Remedy
1) Clean the dustblocking glass.
2) If the primary charging wire is approaching the end of its life, replace it. Be sure also to replace the cleaning pad
at the same time.
3) If the area of friction of the cleaning pad is worn or deformed, replace th pad.
4) Execute the following in service mode to clean the charging wire: COPIER>FUNCTION>CLEANING>WIRE
CLN.
Memo:
The estimated life of the primary charging wire is 500,000 images: the cleaning pad is 500,000 images (however, in
a high temperature/humidity environment, 100,000 images).
F-13-16