HP Color LaserJet Enterprise CP5525 Service Manual - Page 549

Problem Print is light or faded on entire page. Sample Print is light or faded in a particular color. Image is too dark. Page is blank. The page is all black or a solid color. Cause Solution Poor contacts exist on the ITB unit and the product grounding unit. Clean the grounding contacts. If the problem remains after cleaning, check the contacts for damage. Replace any deformed or damaged parts. Poor secondary transfer contacts exist on the secondary transfer roller and the ITB. Clean the contacts. If the problem remains after cleaning, check the contacts for damage. Replace any deformed or damaged parts. Poor primary transfer bias contacts on the ITB unit and product. Poor primary charging bias contacts with the print cartridge and product. Clean the contacts of the color that produces the light print. If the problem remains after cleaning, check the contacts for damage. Replace any deformed or damaged parts. Poor developing bias contacts with the print cartridge and product. The registration density (RD) sensor is defective. Replace the RD sensor. The imaging high-voltage power-supply is defective (no developing bias output). Replace the imaging high-voltage power-supply . Poor contact exists in the primary charging bias or developing bias contacts between the print cartridge and the product. Clean each contact of the color that produces the all black or solid color. If the problem remains after cleaning, check the contacts for damage. Replace any deformed or damaged parts. Replace the affected print cartridge. ENWW Solve image-quality problems 525