xvi
WorkCentre C2424 Copier-Printer
Ensuring Ground Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-73
Testing Motor and Solenoid Resistances . . . . . . . . . . . . . . . . . . 4-75
Paper Path and Media-Based Problems . . . . . . . . . . . . . . . . . . . . . . . . 4-76
Media-Based Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76
Checking the Process and Media Path Drive . . . . . . . . . . . . . . . 4-78
Operating System and Application Problems . . . . . . . . . . . . . . . . . . . . 4-79
Testing Communications Ports . . . . . . . . . . . . . . . . . . . . . . . . . 4-79
Network Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-81
Obtaining Serial Back Channel Trace . . . . . . . . . . . . . . . . . . . . . 4-82
5 Image-Quality Troubleshooting
Image-Quality Problems Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Service Technician RIP Procedure . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Isolating a Copy/Scan Malfunction to the Scanner/DADF. . . . . . . 5-3
DADF Image-Quality Problems . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Dark Streaks on the Copied Image. . . . . . . . . . . . . . . . . . . . . . . . 5-4
Skewed Copy Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Copy Image is Lighter/Darker than the Original . . . . . . . . . . . . . 5-5
Fuzzy Text/Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Copied Image Colors Do Not Match the Original . . . . . . . . . . . . . 5-7
Scanner Image Quality Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Dark Streaks on the Copied Image. . . . . . . . . . . . . . . . . . . . . . . . 5-8
Copied Image is Skewed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Copied Image is Lighter/Darker than the Original . . . . . . . . . . . . 5-8
Copy Image Colors Do Not Match the Original. . . . . . . . . . . . . . . 5-9
Fuzzy Text/Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Diagnosing IOT (Print Engine) Print-Quality Problems . . . . . . . . . . . . . 5-11
Random Light Stripes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Predominate Light Stripes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Smudges or Smears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
The Printed Image Is Too Light or Too Dark . . . . . . . . . . . . . . . 5-15
No Image is Being Printed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Color is Uneven or Color is Wrong . . . . . . . . . . . . . . . . . . . . . . 5-16
Streaks or Lines Down the Print . . . . . . . . . . . . . . . . . . . . . . . . 5-17
Scratches or Marks Parallel to the Long Axis of Printing,
Particularly with Transparencies . . . . . . . . . . . . . . . . . . . . . 5-19
There is ink on the White Portion of the Printed Page . . . . . . . . 5-21
Fuzzy Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
Poor Primary Color Fills. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Ghosting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
Poor Small Text Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Vertical Lines Appear Wavy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Oil Streaks on Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
Incomplete Image Transfer to Paper . . . . . . . . . . . . . . . . . . . . . 5-29
Ink Smears on First Printed Side of Duplex Print . . . . . . . . . . . . 5-30
Repeating Print Defects on Print . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Summary of Contents for WORKCENTRE C2424
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