Xerox 8500DN Service Manual - Page 368

sample prints must be returned with each printhead., A completed checklist

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Reference Step 11 Print Service Test 2: Weak and Missing Jets. Are there weak or missing jet(s)? Step 12 Is the customer experiencing vertical bands (not light stripes) in solid color areas? YES NO Circle one YES NO Circle one x If NO go to Step 12. x If YES, do the following: x 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. x Select Eliminate Light Stripes - Basic from the printer front panel up to 3 times as needed to recover a weak or missing jet. x Select Eliminate Light Stripes - Advanced from the printer front panel up to 2 times as needed to recover a weak or missing jet. x Select Jet Substitution to substitute a working jet for the missing jet. However, if any of the following criteria is met, you should replace the printhead instead. x If the customer uses the billing meters features. x If three missing jets of the same color are adjacent (for example cyan jets 79, 80, and 81). x By the customer runs mainly in Fast Color or Standard mode (as revealed on the Usage Profile page). The repair is complete! x If YES, print 10 solid fill pages of cyan. If the bands vary in intensity and/or location over the 10 prints, the customer is experiencing stagnant ink discoloration. Continue to print solid fills of the offending color until the output is uniform. It may take as many as 60 solid fill pages to refresh all of the ink in the printhead reservoir. The repair is now complete! x If No, the repair is complete! Comments: (Xerox U.S. personnel please add all comments into FIST) A completed checklist and sample prints must be returned with each printhead. Xerox reserves the right to refuse reimbursement to service personnel who do not enclose a completed troubleshooting checklist and a sample print with each returned printhead. Please return the following items with the defective printhead: x Service Print 1 (not necessary for error code-based failures (not applicable for printheads replace because of an error code) x This Printhead Troubleshooting Checklist (filled out) x Inventory control "Green Tag" (filled out) x Sample prints that clearly show the observed print quality defect (not applicable for printheads replace because of an error code) Service Print 1 A-16 Phaser 8400/8500/8550/8560 Color Printer Service Manual

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A-16
Phaser 8400/8500/8550/8560 Color Printer Service Manual
Reference
Step
11
Print Service
Test 2: Weak
and Missing
Jets.
Are there weak
or missing
jet(s)?
YES
NO
Circle
one
If
NO
go to
Step 12
.
If
YES
, do the following:
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.
Select
Eliminate Light Stripes - Basic
from the printer front
panel up to 3 times as needed to recover a weak or missing jet.
Select
Eliminate Light Stripes - Advanced
from the printer front
panel up to 2 times as needed to recover a weak or missing jet.
Select
Jet Substitution
to substitute a working jet for the
missing jet.
However, if any of the following criteria is met, you
should replace the printhead instead.
If the customer uses the billing meters features.
If three missing jets of the same color are adjacent (for
example cyan jets 79, 80, and 81).
By the customer runs mainly in Fast Color or Standard mode
(as revealed on the Usage Profile page).
The repair is complete!
Step
12
Is the customer
experiencing
vertical bands
(not light
stripes) in solid
color areas?
YES
NO
Circle
one
If
YES,
print 10 solid fill pages of cyan.
If the bands vary in intensity
and/or location over the 10 prints, the customer is experiencing
stagnant ink discoloration.
Continue to print solid fills of the
offending color until the output is uniform.
It may take as many as 60
solid fill pages to refresh all of the ink in the printhead reservoir.
The
repair is now complete!
If
No
, the repair is complete!
Comments:
(Xerox U.S. personnel please add all comments into FIST)
____________________________________________________________________________
____________________________________________________________________________
____________________________________________________________________________
A completed checklist
and
sample prints must be returned with each printhead.
Xerox reserves the right to refuse reimbursement
to service personnel who do not enclose a
completed troubleshooting checklist and a sample print with each returned printhead.
Please return the following items with the defective printhead:
Service Print 1
(not necessary for error code-based
failures (not applicable for printheads replace because of
an error code)
This
Printhead Troubleshooting Checklist
(filled out)
Inventory control
“Green Tag”
(filled out)
Sample prints
that clearly show the observed print quality
defect (not applicable for printheads replace because of an
error code)
Service Print 1