HP 8000dn Service Manual - Page 418

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 7-7. Image Quality Problem Action 1. Do you have a print sample? Obtain a print sample from the customer. 2. Does the problem repeat on Use the Repetitive Defect Ruler in figure 7-10 on page 408. the page? 3. Is the toner cartridge full and Check the toner cartridge using the check list on page 395. is it manufactured by HP? 4. Is the printer clean? Perform the cleaning procedure described in "Cleaning the Printer and Accessories" on page 88. 5. Is the customer using print For more information about HP's paper specification standards, see media that meets all HP paper "Paper Capacities and Sizes" on page 4 and the HP LaserJet Family specification standards? Paper Specification Guide. 6. Is the print sample similar to Compare and perform the actions recommended in "Image Quality those in the "Image Quality Tables" on page 396. Tables" on page 396? 7. Is the problem on the drum Perform the steps in "Half Self Test Functional Check" on page 409 to or transfer roller? determine where the defect is. If the defect is on the drum, replace the toner cartridge. If it is not on the drum, replace the transfer roller. 394 Chapter 7 Troubleshooting EN