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Troubleshooting the Printing System
7-49
Image Quality
When you are working with customers, obtain a print sample before
you begin troubleshooting the printer. Ask the customer to explain the
quality they expect from the printer. The print sample will also help
clarify the customer’s explanation.
Table 7-8. Image Quality Checks
Image Quality Checks Action
Does the problem repeat on
the page?
Use the Repetitive Defect Ruler on page 7-66.
Is the Toner Cartridge full
and is it manufactured by
HP?
Check the Toner Cartridge using the check list on page 7-50.
Is the customer using print
media that meets all HP
paper specification
standards?
For more information about HP’s paper specification standards,
see Chapter 1 of this manual and the
HP LaserJet Family Paper
Specification Guide
.
Is the print sample similar to
those in the Print Quality
Tables on page 7-53?
Compare and perform the actions recommended in the Print
Quality Tables.
Is the problem on the Toner
Cartridge drum or the
Transfer Roller?
Perform the Half Self Test Functional Check (page 7-67) to
determine where the defect is.
If a dark and distinct toner image is preset on the drum’s surface,
assume that the first four functions of the electrophotographic
process are functioning (cleaning, conditioning, writing, and
developing - see Chapter 5), and troubleshoot the failure as a
transfer or fusing problem.
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