Printer Calibrations; Wiper Alignment; Jet Substitution Mode - Xerox Phaser 8400 Service Manual

Printer Calibrations

Wiper Alignment

See the Wiper Alignment Procedure on page 6-2.

Jet Substitution Mode

On Phaser 8400 printers, the Jet Substitution Mode provides a temporary solution for
print-quality problems when weak or missing jets cannot be recovered. When Jet
Substitution Mode is active, adjacent jets are used to print over the area covered by
the problem jet to restore the print-quality. Jet Substitution Mode reduces the
maximum imaging speed by 50% or more and has other limitations that affect printer
performance.
Jet Substitution Mode on Phaser 8500/8550 printers is in the Eliminate Light Stripes
menu. Although it does not slow down the imaging speed as it does on Phaser
8400 printers, it still provides an end solution to eliminating light stripes.
Note
Always refer to the infoSMART Knowledge Base to access the latest guidelines
for using Jet Substitution Mode.
Phaser 8500/8550 printers feature a Jet Substitution mode that is similar to Phaser
8400 printers, but with two important differences:
■
Phaser 8500/8550 Jet Substitution mode can provide an end solution instead of
serving as a temporary fix (as for Phaser 8400 printers). Because Jet Substitution
mode can provide an end solution, it is located in the "Eliminate Light Stripes"
menu instead of requiring a hidden push button sequence, as is the case with
Phaser 8400 printers.
■
Most Phaser 8500/8550 users will not notice changes to print-quality or speed
when using the Jet Substitution mode. It typically increases the imaging time by
no more than one or two seconds per page compared to a 50% increase on Phaser
8400 printers.
The knowledge base provides new procedures for determining when to use Jet
Substitution mode. Factors such as the use of the Billing Meters feature and multiple,
adjacent problem jets can affect the recommended solution.
6-10 Phaser 8400/8500/8550 Color Printer