Xerox Phaser 8400 Service Manual page 395

Is the
Step
Cap/Wipe/
6
Purge assembly
correctly
aligned?
Step Print Service
Test Print 2:
7
Weak and
Missing Jets.
Is severe color
mixing
apparent?
Step Visually check
the printhead
8
faceplate. Is
the faceplate
contaminated?
Step Visually check
the Wiper
9a
Assembly
blade. Is it OK?
Step Check the
purge
9b
performance of
the purge
system.
Xerox
Service Manual
Is the wiper assembly out of alignment (not parallel with the printhead
YES faceplate)?
NO
If YES, perform the wiper alignment procedure as described in the
Phaser 8400/8500/8550 Color Printer Service Guide.
Circle
one
Is there color mixing from one row to the next row for the same jet?
YES Note: Some color mixing is normal following a purge. It
NO usually clears after one or two prints.
If YES, replace the wiper assembly. Repeat Step 6.
Circle
one
Are there streaks, smudges, or a scum of wax in the jet area (outlined in
YES red) of the printhead?
NO
Circle
one
If YES, replace the wiper assembly. Repeat the checklist stating at Step
6.
Is there any damage or separation on the wiper blade? If YES, replace
the wiper assembly.
Check the purge pump performance.
YES
9a. Empty the waste tray.
NO
9b. Select Eliminate Light Stripes - Basic from the printer front
panel and run one cleaning cycle.
Circle
9c. Remove the waste tray and examine how much ink was purged.
one
A single purge should resemble the illustration.
Is the purge mass noticeably less than what is pictured?
If YES, inspect the purge hoses for pinches, splits, or tears.
Phaser 8500/8550 Printhead Checklist 0750984-00 Page 3
A-15