HP LaserJet 5000 Service Manual - Page 269

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. Table 7-8. Image Quality Checks Image Quality Checks Action Does the problem repeat on Use the Repetitive Defect Ruler on page 7-73. the page? 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 Compare and perform the actions recommended in the Print those in the Print Quality Quality Tables. Tables on page 7-48? Is the problem on the Toner Perform the Half Self-Test Functional Check (page 7-74) to Cartridge drum or the determine where the defect is. Transfer Roller? 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. 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. 7-48 Troubleshooting EN