HP Color LaserJet Enterprise CP5525 Service Manual - Page 552

Problem Dropouts appear. Sample The toner is not fully fused to the paper. Some color is misregistered. Cause Solution The secondary transfer roller is deformed or has deteriorated. Replace the secondary-transferroller. The primary charging roller, developing roller, or photosensitive drum is deformed or has deteriorated. Replace the print cartridge of the color that matches the defect. The fuser roller is deformed or Replace the fuser. has deteriorated. The transfer 1 high-voltage power-supply PCA is defective (no transfer 1 bias output). Replace the transfer 1 high-voltage power-supply. The transfer 2 high-voltage power-supply PCA is defective (no transfer 2 bias output). Replace the transfer 2 high-voltage power-supply. The fuser roller or pressure Replace the fuser. roller is scarred or deformed. The fuser control circuit is defective. Replace the low-voltage power supply. The thermistor is defective. Replace the fuser. The fuser heater is defective. The product is incorrectly calibrated. Calibrate the product. The ITB unit is defective. If the ITB does not rotate smoothly or a cleaning malfunction occurs (ITB is dirty), replace the ITB. The drive gear of the ITB motor is worn or chipped. Check each drive gear between the ITB drive roller and the ITB motor. If the gear is worn or chipped, replace the drive unit. The RD sensor is defective. Open and close the right door several times to clean the RD sensor. If the problem persists, replace the RD sensor. The laser/scanner unit is defective. Replace the laser/scanner assembly. The print cartridge is defective. Replace the print cartridge of the affected color. 528 Chapter 3 Solve problems ENWW