Lexmark C780 Service Manual - Page 471
Repeating defect locator, C77x, Rollers, NIP Shock
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Reference Components C77x, C78x Repeating Defect Locator NOTE: Do not use the side rulers to assess repeating defects if the left and right calibration lines do not measure 110 mm respectively. When printing this document, make sure 'Fit to page' is not selected. Charge Roll TAR Dev Roll 1st Xfer Roll 2nd Xfer Roll PC ITU Drive / Backup/CR Short 110mm Calibration Mark Rollers Component Description Charge Roll PC Drum PC Cleaner Developer Roll TAR Toner Meter Cart Auger First Transfer Roll Second Transfer Roll ITU Drive / Back-up Rolls ITU Reverse Roll Fuser Hot Roll Fuser BUR Metering Rolls Color Charge Roll (CR)Short Component Planes Effected Cartridge ITU 2nd XferRoll ITU ITU Fuser Reference Edge C, M, or Y Cart One One One One One One One One All All All All All All C, M, & Y Defect Period mm inches 38.2 1.5 93.8 3.69 96.8 3.8 46.3 1.82 48.2 1.9 1092.2 43.0 349.9 13.8 53.1 2.09 59.4 2.34 101.0 3.98 50.5 1.99 148.0 5.83 147.0 5.79 47.0 1.85 101.0 3.98 Fuser HR / BUR NIP Shock NIP Distances Y-C-M-K Cartridge Spacing K to Second Transfer Roll M to Second Transfer Roll C to Second Transfer Roll Y to Second Transfer Roll Meter 1 to Second Transfer Meter 2 to Second Transfer Meter 3 to Second Transfer Meter 4 to Second Transfer 2nd Transfer to Fuser Fuser Nip to First Redrive Fuser Nip to Exit Sensor Fuser Nip to Exit Tray Nip Defect Period mm inches 101.0 3.98 144.6 5.69 245.6 9.67 346.6 13.65 447.6 17.62 164.8 6.49 126.4 4.98 86.4 3.40 51.4 2.02 319.4 12.57 50.0 1.97 58.2 2.29 420.3 16.55 Reference Nip Shock Fuser Nip to 1st Redirve Meter 4 to 2nd Xfer Meter 3 to 2nd Xfer Cartridge Spacing 110mm Calibration Mark Meter 2 to 2nd Xfer K to 2nd Xfer Meter 1 to 2nd Xfer Lexmark International, Inc. Revision 3.1 M to 2nd Xfer July 13, 2004