Xerox WorkCentre C2424DX Service Manual page 421

Cap/Wipe/
6
Purge assembly
correctly
aligned?
Print Service
Step
Test Print 2:
7
Weak and
Missing Jets.
Is severe color
mixing
apparent?
Visually check
Step
the printhead
8
faceplate. Is
the faceplate
contaminated?
Visually check
Step
the Wiper
9a
Assembly
blade. Is it OK?
Check the
Step
purge
9b
performance of
the purge
system.
Print Service
Step
Test 2: Weak
11
and Missing
Jets.
Are there weak
or missing
jet(s)?
Is the customer
Step
Xerox
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
If YES, replace the wiper assembly. Repeat the checklist stating at Step
Circle
6.
one
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 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 splits or tears.
If NO go to Step 12.
YES
If YES, do the following:
NO
Check the exit area of the paper path for debris that could be
scraping ink off the drum and may mimic a weak or missing jet.
Circle
Select Eliminate Light Stripes from the printer front panel up to
one
3 times as needed to recover a weak or missing jet.
Perform the JetFix technique by downloading the appropriate
snippet ( such as 8400_jetfix_c.ps for a missing cyan jet) to the
printer. The snippets are available on the Customer Support
Resources website in the Phaser 8400 web pages. Refer to
Service Bulletin 640.
If the jet is still missing, replace the printhead. The repair is
complete!
If YES, print 10 solid fill pages of cyan. If the bands vary in intensity
Phaser 8400 Printhead Checklist - Version 1.1 075-0882-01
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