Xerox 6250N Service Manual - Page 196
Solid Dark or Dirty Prints, No Border
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Solid Dark or Dirty Prints, No Border The prints appear very dirty and brown over the entire page. This print-quality symptom is a composite image of all colors with no margin. This is caused by a charge voltage failure. For information on the Imaging Unit charge contacts, see "Theory of Operation" on page 2-1. S6200-292 Troubleshooting Procedure Step 1 2 3 Check Yes Is the problem resolved after replacing the Imaging Unit? Complete Inspect the Imaging Unit charge voltage contacts (PL9.1.5) and the Bias Housing Assembly (PL 9.1.4) in the printer for any damage or defects. See "Imaging Unit Charge Voltage Contacts" on page 2-36. Complete Is the problem resolved after replacing the Sub-High Voltage Supply Board, page 8-87? Complete No Go to Step [2]. Go to Step [3]. Replace the Engine Control Board, page 8-107. Note After replacing any component in Step 2 or 3, run the Clean the Imaging Unit from the Maintenance section of Service Diagnostics. See "Service Diagnostic Tests" on page 3-9. Print-Quality Troubleshooting 5-15
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