HP CM3530 Service Manual - Page 527

Problem Cause Solution Image in a particular color does not print in the correct color. 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 missing color. If the problem remains after cleaning, check the contacts for damage. Replace any deformed or damaged parts. The print cartridge (primary charging Replace the print cartridge of the color that roller, developing roller, or matches the defect. photosensitive drum) is defective. The high-voltage power-supply lower Replace the high-voltage power-supply is defective (no primary charging bias lower. See High-voltage power supply lower or developing bias output). on page 308. The laser/scanner unit is defective. Replace the laser/scanner assembly. See Laser/scanner assembly (Y/M) on page 325 or Laser/scanner assembly (C/Bk) on page 332. Dropouts appear. The toner is not fully fused to the paper. The secondary transfer roller is deformed or has deteriorated. Replace the secondary-transfer-roller. See Secondary transfer roller on page 205. The primary charging roller, Replace the print cartridge of the color that developing roller,, or photosensitive matches the defect. drum is deformed or has deteriorated. The fuser roller is deformed or has Replace the fuser. deteriorated. The high-voltage power-supply T PCA is defective (no transfer bias output). Replace the high-voltage power-supply upper. See High-voltage power supply upper on page 339. The fuser roller or pressure roller is Replace the fuser. See Fuser on page 200. scarred or deformed. The fuser control PCA is defective. Replace the low-voltage power supply. See Fuser on page 200. The thermistor is defective. Replace the fuser. See Fuser on page 200. The fuser heater is defective. ENWW Solve image-quality problems 497