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6.
Enter
dC131
NVM Read / Write at location 06-001 Light Level and reduce the value by
200. Reduce the value in increments of 200 until good shadow is achieved.
•
35 ppm machines. Do not reduce the value below 3000.
•
40-55 ppm machines. Do not reduce the value below 1500.
•
65-90 ppm machines. Do not reduce the value below 1500.
7.
Enter
dC606
Print Test Patterns and print internal test pattern 15
8.
Exit diagnostics,
GP
1.
9.
If the copy has poor highlights, then go to the
If the highlights are good, then go to the
Poor Highlights Adjustment
1.
Enter
dC131
NVM location 09-003 Charge Grid and reduce the value by 25.
•
35 ppm machines. Ensure that the value is between 370 and 470.
•
40-55 ppm machines. Ensure that the value is between 380 and 480.
•
65-90 ppm machines. Ensure that the value is between 370 and 470.
2.
Enter
dC606
Print Test Patterns and print internal test pattern 15.
3.
Exit diagnostics,
GP
1.
4.
Place the new printed test pattern 15 on the platen glass and make one copy.
5.
If the copy has poor highlights, then go to the next step.
If the highlights are good, then go to the
6.
Enter
dC131
NVM. Location 09-003 Charge Grid and reduce the value by 25. Reduce the
value in increments of 25 until good highlights is achieved.
Do not reduce the value below 350.
7.
Enter
dC606
Print Test Patterns and print internal test pattern 15.
8.
Exit diagnostics,
GP
1.
9.
Place the new printed test pattern 15 on the platen glass and make one copy. The copy
quality is optimized.
Final Image Quality Check
1.
Enter
dC606
Print Test Patterns and print internal test pattern 15.
2.
Exit diagnostics,
GP
1.
3.
Place the new printed test pattern 15 on the platen glass and make one copy. The image
quality is optimized.
4.
Make a copy of the customer document and compare it with the initial copy. Check that
the image quality has improved.
5.
Run a variety of jobs to confirm that the changes made have not introduced other copy
quality problems.
6.
Record any NVM changes in the machine log book.
7.
Perform NVM Save and Restore,
GP
Repairs/Adjustments
ADJ 9.5
Poor Highlights
Adjustment.
Final Image Quality
Check.
Final Image Quality
Check.
5.
May 2013
4-468
Figure 1 Test pattern 15
Xerox® WorkCentre® 5790 Family
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