HP LaserJet Enterprise 600 Service Manual - Page 411

Table 3-36 Image defect examples (continued) Problem Image example Solution Blurred print 1. Make sure that the type and quality of the paper you are using meet HP specifications. 2. Make sure that the environmental specifications for the product are being met. 3. Turn over the paper in the tray. Also, try rotating the paper 180°. 4. Do not use paper that already has been run through the product. 5. Open the following menus: ◦ Administration ◦ General Settings ◦ Print Quality ◦ Toner Density ● Select form a range of density settings. Random image repetition If an image that appears at the top of the page (in solid black) repeats further down the page (in a gray field), the toner might not have been completely erased from the last job. (The repeated image might be lighter or darker than the field it appears in.) ● Print the job several times to determine if the problem persists. ● Change the tone (darkness) of the field that the repeated image appears in. ● Change the order in which the images are printed. For example, have the lighter image at the top of the page, and the darker image farther down the page. ● From your software program, rotate the whole page 180° to print the lighter image first. ● If the defect occurs later in a print job, turn the product off for 10 minutes, and then turn it on to restart the print job. ENWW Solve image-quality problems 387