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Zorluk: ZorPrinter and Multifunction Device Issues

A desktop technician is troubleshooting a corporate network multifunction laser printer. Users report two specific complaints: all printed documents display continuous vertical black streaks down the length of every page, and scans created using the Automatic Document Feeder (ADF) exhibit a thin vertical black line along the edge of the digitized image, whereas scans placed directly on the flatbed glass are entirely clear. Which TWO of the following actions should the technician perform to resolve these distinct issues?

  1. Clean the small ADF glass strip adjacent to the main flatbed glass using a lint-free cloth.Cevap
  2. Inspect and replace the photosensitive drum assembly or drum cleaning blade.Cevap
  3. C
    Execute an automated thermal nozzle alignment and printhead cleaning routine from the maintenance menu.
  4. D
    Replace the separation pad and pickup rollers inside the primary paper feeding tray.

Cevap

The technician should clean the narrow ADF glass strip to resolve the ADF scanning line, and inspect or replace the photosensitive drum assembly to resolve the vertical printing streaks.
Cleaning the narrow ADF glass strip eliminates debris that causes vertical lines on ADF scans (since flatbed glass scans are clear). Replacing or cleaning the photosensitive drum assembly addresses continuous vertical black lines across all printed jobs caused by drum surface damage or cleaning blade failure.

Adım Adım Çözüm

1
Analyze the scanning symptom difference between ADF and flatbed modes.
Since flatbed scans are clean while ADF scans have a line, the issue is isolated to debris or white-out on the narrow ADF scanner glass strip where the document moves over a stationary optical sensor.
ADF scanning moves paper past a fixed glass slit, so any speck on that glass creates a solid line down the scanned page.
2
Analyze the printing symptom involving vertical black lines on output.
Identify that excess toner is remaining on the photosensitive drum during the printing cycle due to a damaged cleaning blade or scratched drum cylinder surface.
A defect in the drum or cleaning blade causes toner to build up in a line, transferring directly onto paper during the transfer phase.

Anahtar Kavram

Multifunction printer optic diagnostics (ADF glass vs flatbed) and electrophotographic printing defects.
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Printer and Multifunction Device Issues

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