Xerox Phaser 8860, Service Manual

Page: 123 / 316

09/2007
3-31 Phaser 8860/8860MFP Service Manual
Jet Substitution Mode
Image Quality Initial Issue
Figure 11 Cleaning Page
Jet Substitution Mode
Jet Substitution Mode provides a solution for print-quality problems when weak or missing jets
are not recoverable by cleaning. This mode substitutes adjacent jets to print the area normally
covered by the problem jet. Perform a cleaning procedure before disabling any jets. Substituted
jets are stored and remain disabled until Jet Substitution Mode is turned Off.
Jet Substitution Mode, refer to Figure 1 , is not effective in correcting situations where 3 or more
consecutively numbered jets ( 1 ) are weak or missing. Jet substitution requires the presence of
an numerically adjacent functional jet to replace the affected jet. As an example, If jet 2 is miss-
ing, jet 1 or jet 3 could substitute for 2. If 1, 2, and 3 were all missing, no jet is available to sub-
stitute for 2. Once Jet Substitution mode is enabled for a particular jet, the Light Stripes Test
page displays a black line (
2 ) underneath the substituted jet number. It is normal for the substi-
tuted jet to appear either blank or filled on Light Stripes Test page after substitution. Also,
Saved & Stored jobs stored on the hard drive will not print correctly because they were ren-
dered before the Jet Substitution was made.
Figure 1 Jet Substitution Exceptions