Xerox Phaser 8400 Service Manual page 390

Is the Wiper
Step
Assembly
6
correctly
aligned?
Step Print Service
Test Print 1:
7
Weak and
Missing Jets.
Is severe color
mixing
apparent?
Step Visually check
the printhead
8
faceplate. Is
the faceplate
contaminated?
Visually check
Step
the Wiper
9
Assembly
blade. Is it OK?
Check the
Step
purge
10
performance of
the purge
system.
Xerox
A-10
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 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 starting 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 10a. Empty the waste tray.
NO
10b. Select Eliminate Light Stripes from the printer front panel and
run one cleaning cycle.
Circle
10c. 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 kinks, splits or tears.
Phaser 8400/WorkCentre C2424 Printhead Checklist 075-0882-02
Phaser 8400/8500/8550 Color Printer
Page 3