Xerox DocuPrint C55 Service Manual

Also see for DocuPrint C55: User guide Brochure Upgrade guide Install guide Supplementary guide

Xerox DocuPrint C55 Service Manual Manual pdf 59 page image

2/99 IMAGE QUALITY RAPsDocuPrint C55/C55mp/[NC60] 3-3 IMAGE QUALITY DEFECTSDefect Name / Description Possible Causes Corrective Action1. BACKGROUND (OVERALL). 1. Density out of adjustment. 1. Perform the Density and Color BalanceAdjustment. (ADJ. 3.1).2. Color balance out of adjustment. 2. Perform the Density and Color BalanceAdjustment. (ADJ. 3.1).3. Print Drum Module failure. 3. Replace the Print Drum Module.4. Developer failure or near end of life. 4. Replace the developer module(s).5. Print Drum Arcing. 5. Refer to OF8 Arcing RAP in Section 2.6. New developer assembly did not initialize. 6. Run a Diagnostic Sheet and check the TonerConcentration Setpoints for newly installeddeveloper assembly. If the Setpoints are at70 (default), replace the developer assembly.7. Dirty Printer (Sump Full). 7. Refer to BSD 9.21 and check the WasteToner Full signal, CN102-3, for a short toground.8. Extraneous light leak. 8. Ensure the printer is not in direct sunlight.9. Temperature/RH Sensor failure. 9. If the readings on the diagnostic sheet areout of range (RH=0 or RH > 100, orTemp=0), refer to the chart below:If the wiring checks OK, replace the Tem-perature/Humidity Sensor.Diag.Sheet Refer to BSD 9.19 and check:RH=0 CN105-1, Humidity Sense, for a short to ground.RH > 100 CN105-1, Humidity Sense, for an open.CN105-2, Humidity Sense, GND for an open.Temp=0 CN105-5, Temp. Sense, for an open or short toground.