HP CP6015dn Service Manual - Page 530

Problem Print is light or faded on entire page. 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 with exist on the secondary transfer roller and the ITB unit. Clean the contacts. If the problem remains after cleaning, check the contacts for damage. Replace any deformed or damaged parts. Print is light or faded in a particular color. 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. Image is too dark. The image-density sensor is defective. Replace the color misregistration/imagedensity sensor unit. Page is blank. The page is all black or a solid color. White spots appear in an image The high-voltage power-supply PCA Replace the high-voltage power-supply PCA is defective (no developing bias A. See High-voltage power supply PCA (A) output). on page 226. Poor primary charging contacts or developing bias contacts from the high-voltage power-supply PCA A to print cartridge. 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. The static charge eliminator is dirty. Clean the static charge eliminator. The primary transfer roller is deformed or has deteriorated. Replace the ITB. See Intermediate-transfer belt (ITB) on page 196. The secondary transfer roller is deformed or has deteriorated. Replace the secondary-transfer-roller unit. See Transfer roller on page 194. 488 Chapter 7 Solve problems ENWW