HP 2300d Service Manual - Page 212

Image-formation troubleshooting When you are working with customers, obtain a print sample before troubleshooting the printer. Ask the customer to describe the quality expected from the printer. The print sample also helps clarify the customer's description of the problem. Often an image-formation problem can be linked to media that is outside the specifications that Hewlett-Packard has established for optimum printer performance. See "Media troubleshooting" on page 218 for help with persistent image-formation problems. Image-quality checks Action Does the problem repeat on the page? Use the "Repetitive defect ruler" on page 227 to determine the source of the problem. Is the print cartridge full See "Check the print cartridge" on page 211 for information about the print and is it manufactured cartridge. by HP? Is the customer using print media that meets all HP specification standards? See chapter 2, beginning on page 34, for information about media specifications. Is the print sample similar to those in the image-defect tables? Compare the sample to the tables and perform the actions recommended in the "Image-defect tables" on page 212. Is the problem on the print cartridge or the transfer roller? Perform a half-self-test functional check (see page 228) to determine the location of the defect. If a dark and distinct toner image is present on the drum surface, assume that the first four functions of the electrophotographic process-cleaning, conditioning, writing, and developing-are functioning correctly, and troubleshoot the failure as a transfer or fusing problem. (See chapter 5 for information about the the electrophotographic process.) Is the customer using a See "Media troubleshooting" on page 218. media type that is recommended for this product? 210 Troubleshooting ENWW