Xerox PHASER 8500 Service Manual page 363

Print Service
Step
Test 1: Weak
11
and Missing
Jets.
Are there weak
or missing
jet(s)?
Step Is the customer
experiencing
12
vertical bands
(not light
stripes) in solid
color areas?
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:
Two prints of Service Print 1
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)
Phaser 8400/8500/8550/8560 Color Printer Service Manual
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
YES
and/or location over the 10 prints, the customer is experiencing
NO
stagnant ink discoloration. Continue to print solid fills of the
offending color until the output is uniform. It may take as many as 60
Circle
solid fill pages to refresh all of the ink in the printhead reservoir. The
one
repair is now complete!
If No, the repair is complete!
Service Print 1
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88
Weak jet
74 75 76 77 78 79 80
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88
9923-114
Reference
A-11