HP 8000dn Service Manual - Page 424

Table 7-13. Toner Smear Possible Cause Recommended Action 1. Paper does not meet specifications. The moisture content, conductivity, or surface finish of the media being printed may not work correctly with the electrophotographic process. Try a different paper lot or other media (see HP LaserJet Printer Family Paper Specifications Guide). 2. Fusing Rollers are dirty. Toner build-up Remove and inspect the Fusing Assembly can cause the print on a page to smear. for excessive toner build-up. Clean using alcohol. 3. The Static Eliminator Strip is dirty or is Clean the Anti-Static Brush using not grounded, allowing a static charge to compressed air. remain on the page. 4. Fusing Assembly is defective. The print Replace the Fusing Assembly. See will smear if the Fusing Assembly is not "Fusing Assembly" on page 187 for heated sufficiently to bond the toner instructions. image to the paper. 5. DC Controller is defective. The DC Controller regulates fusing roller temperature. If a new Fusing Assembly does not resolve the problem, replace the DC Controller PCA. See "PCA, DC Controller" on page 197 for instructions. Table 7-14. Background Scatter Possible Cause Recommended Action Random Background Scatter 1. Paper does not meet specifications. The moisture content, conductivity or surface finish may not work correctly with the electrophotographic process. Try a different media or paper lot (see HP LaserJet Printer Family Paper Specifications Guide). 2. Inside of printer is dirty (toner may have Clean inside of printer (see "Cleaning the leaked out of the toner cartridge). Printer and Accessories" on page 88). Install a new toner cartridge if leaking. 400 Chapter 7 Troubleshooting EN