Canon imageRUNNER 2520 Series, Service Manual, Page: 200 / 402

■ Stained Leading/Trailing Edge of Paper
[Occurrence area]
Transfer front guide
Fixing inlet guide
[Cause]
Transfer front guide: The leading or trailing edge of paper touches the toner stuck to the transfer front upper guide.
Fixing inlet guide: The leading or trailing edge of paper touches the toner stuck to the fixing inlet guide.
[Occurrence condition]
When halftone or solid-black images are printed in succession
[Remedy]
Using lens-cleaning paper or the like, clean the guide stained with toner.
■ Image Transfer Wrong/Text Void
[Occurrence area]
Transfer roller (circumference: 50mm)
[Cause]
Resistance of paper increases due to reduction in paper water content, resulting in insufficient transfer output.
Resistance of paper decreases due to increase in paper water content, resulting in excessive transfer output.
[Occurrence condition]
Paper left alone in a low-humidity environment
Paper left alone in a high-humidity environment
[Remedy]
• USER MODE> Adjustment/ Cleaning> Special Mode M> Low or High
6. Troubleshooting
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