Table 7-36. Image Skew (continued) Possible Cause Recommended Action 3. Paper lot is bad. Paper that is manufactured poorly or inconsistently or that has too smooth or too rough a surface texture can cause an image skew problem. Try a different paper lot (see HP LaserJet Printer Family Paper Specifications Guide). 4. Pickup and/or Registration Rollers are worn. Paper is not being picked up consistently. Inspect all paper path rollers, looking for wear, cracks, or glazing. Replace the worn rollers. Table 7-37. Bubble Print Possible Cause Recommended Action 1. Photosensitive drum inside toner cartridge is not grounded. 1.
Check for proper mounting of the High Voltage Power Supply (HVPW) and the HVPS ground contacts on the toner cartridge. 2. Check for proper seating of toner cartridge. 3. Replace the toner cartridge. 2. Toner cartridge is leaking. Replace the toner cartridge. 3. Paper does not meet specifications. The moisture content, conductivity, or surface finish may not work correctly with the electrophotographic process. Try a different paper lot (see HP LaserJet Printer Family Paper Specifications Guide). 4. High Voltage Power Supply is defective. Replace the High Voltage Power Supply. See “High Voltage Power Supply (HVPS)” on page 215 for instructions. C4085-91087 Image Quality 481