HP LaserJet 5000 Service Manual - Page 273
Table 7-10. Black continued, Possible Cause, Action, Replace the High Voltage Power Supply PCA.
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Table 7-10. Black Page (continued) Possible Cause Action Defective Toner Cartridge. Replace the Toner Cartridge. Light is leaking into Ensure all covers are in place. the printer. High voltage power supply circuit is defective (not supplying the correct negative voltage). Replace the High Voltage Power Supply PCA. The High Voltage Remove the DC Controller Board and check the Power Supply is connectors for damage. Reseat the DC Controller installed improperly. If Board, being certain to fully seat the connectors. the High Voltage Power Supply has been removed and replaced, it may not be seated properly. Bad Primary Charging Replace the Toner Cartridge. Roller. DC Controller PCA is Replace the DC Controller PCA. defective. If the DC Controller turns on the laser beam continuously, the entire surface of the Photosensitive drum is neutralized causing a completely black page. Laser/Scanner Assembly is faulty (turning laser on continuously). Replace Laser/Scanner Assembly. 7-52 Troubleshooting EN