Xerox ColorQube 9303 Series, Service Manual

Page: 741 / 1812

February 2013
3-95 ColorQube® 9303 Family
TP 20
Image Quality
TP 20 Oil Bar Chase and Metering Blade Timing Test Pages
These test pages are used to check the operation of the cleaning unit.
The oil bar chase and metering blade timing test pages are printed from dC959 cleaning unit
exerciser. Both pages are printed when the oil bar chase test page is selected.
NOTE: Before printing this test page, ensure that A4 or 8.5 x 11 inch plain paper is loaded long
edge feed into tray 4. Use the best quality media available. Do not use hole punched paper.
NOTE: When the paper selected for the test print pages is correct, the test pages will be
printed with annotations on the bottom edge of the visible image confirming the test print name.
Purpose
The oil bar chase test page is used to check that the metering blade leaves no more than a thin
bar of oil on the drum when disengaging. The metering blade timing test page is used to
ensure that the metering blade engages and disengages with the drum at the correct time.
1. Oil bar chase, A4 or 8.5 x 11 inch image, Figure 1 . A good oil bar chase page will have no
oil contamination.
NOTE: A thin line of oil approximately 35 mm below the horizontal line and no more than
1 mm wide is acceptable.
Cleaning unit problems that may be indicated by this test page are described in IQ 21 Oil
on Output RAP.
Figure 1 Oil bar chase page
2. Metering blade timing test, A4 or 8.5 x 11 inch image, Figure 2 . Cleaning unit problems
that may be indicated by this test page are described in IQ 7 .