HP LaserJet 5000 Service Manual - Page 283

Table 7-19. Faded Print/Bubbles (continued) Possible Cause Action EconoMode is on. EconoMode saves toner by reducing the dot density. This may appear to be a print quality problem in some cases. Turn EconoMode off. Paper does not meet Try a different paper lot (see HP LaserJet Printer specifications. The Family Paper Specifications Guide). moisture content, conductivity, or surface finish may not work correctly with the electrophotographic process. Transfer Roller is Inspect the Transfer Roller for proper installation and defective or incorrectly contact. If the Transfer Roller is damaged, replace it. installed. If the transfer roller loses conductivity, it cannot effectively pull toner from the drum to the paper. Laser/Scanner door is not opening properly. 1. Remove and reseat the toner cartridge. 2. Check the Laser/Scanner shutter door for proper operation. If defective, replace the Laser/Scanner Assembly. High voltage contact Check the contacts for functionality. If dirty, clean springs are dirty or using alcohol; if damaged, replace the High Voltage defective. The high Power Supply PCA. voltage contacts are mounted on the High Voltage Power Supply PCA and protrude into the toner cartridge cavity. 7-62 Troubleshooting EN