Lexmark Optra C Service Manual - Page 86
Print Quality Troubleshooting, Background, Black Horizontal Lines
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5045-001 Print Quality Troubleshooting Background Symptom: A slight tint to the entire page starting approximately 8 mm from the top edge of the page. It may appear to be gray, but could be any combination of primary colors. Cause: Cool, dry environments or used cartridges nearing end of life. Resolution: Increase environmental temperature and humidity. Replacing all four toner cartridges reduces background, if they are nearing end of life. Call your country support function for assistance prior to replacing parts. Black Horizontal Lines Symptom: Horizontal lines of any length and width across the page repeating at 129 mm intervals. Cause: Improper removal or installation of the photoconductor. The drum release arm must be lowered prior to removal or installation of the photoconductor. Resolution: Replace the photoconductor. 2-54