HP LaserJet Enterprise 600 Service Manual - Page 404

Solve image-quality problems Occasionally, you might encounter problems with print quality. The information in the following sections helps you identify and resolve these issues. Print-quality examples These examples identify the most common print-quality problems. If you still have problems after trying the suggested solutions, contact HP Customer Support. Table 3-36 Image defect examples Problem Image example Solution Light print (partial page) 1. Make sure that the print cartridge is fully installed. 2. The toner level in the print cartridge might be low. Replace the print cartridge. 3. The paper might not meet HP specifications (for example, the paper is too moist or too rough). Light print (entire page) 1. Make sure that the print cartridge is fully installed. 2. Make sure that the Economode setting is turned off at the control panel and in the printer driver. 3. Open the following menus: ◦ Administration ◦ General Settings ◦ Print Quality ◦ Toner Density ● Select form a range of density settings. 4. Try using a different type of paper. 5. The print cartridge might be almost empty. Replace the print cartridge. 6. Clean the product paper path. 7. If the error persists, replace the transfer roller and clean the contacts. 8. If the error persists, replace the high-voltage power supply. 9. If the error persists, replace the DC controller. 10. If the error persists, replace the laser/scanner. 380 Chapter 3 Solve problems ENWW