HP LaserJet 5000gn User Manual download pdf (Page 269)

7-48 Troubleshooting

Image Quality

When you are working with customers, obtain a print sample before

you begin troubleshooting their printer. Ask the customer to explain

the quality they expect from the printer. The print sample will also help

clarify the customer’s explanation.

Check the Toner Cartridge

Image formation defects are often the result of problems with the

Toner Cartridge. If there is any doubt, always replace the Toner

Cartridge before troubleshooting image defects.

Table 7-8. Image Quality Checks

Image Quality Checks Action

Does the problem repeat on

the page?

Use the Repetitive Defect Ruler on page 7-73.

Is the Toner Cartridge full

and is it manufactured by

HP?

Check the Toner Cartridge using the check list on page 7-48.

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 7-48?

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 7-74) to

determine where the defect is.

If a dark and distinct toner image is present 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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HP LaserJet 5000gn User Manual Page 269