HP LaserJet 4250 Service Manual - Page 405

Table 7-28 Distorted images AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc Table 7-29 Skew Possible cause Recommended action(s) The media does not meet specifications or is not stored correctly. 1 Turn over the stack of media in the tray. Also try rotating the media 180°. 2 Check the media type and quality. Replace the media if it does not meet specifications, and advise the customer to use the HPrecommended media and to store it correctly. See Media specifications. The operating environment does not meet specifications. Make sure that the printer is installed in an area that meets the environmental specifications. See Operating environment. The cables are not securely connected Reseat the cables that are connected to the laser/scanner assembly. to the laser/scanner assembly. The cables are not securely connected Reseat the cables that are connected to the dc controller PCA. to the dc controller PCA. The laser/scanner assembly is defective. Replace the laser/scanner. See Laser/ scanner assembly. The gears are worn. Inspect the gears that drive the print cartridge and fuser. Replace the main drive assembly. See Main drive assembly. The print-cartridge motor is defective. (HP LaserJet 4250/4300/4350 only) Replace the print-cartridge motor (HP LaserJet 4250/4300/4350 only). See Print-cartridge motor (HP LaserJet 4250/4300/4350 series printer only). The dc controller PCA is defective. Replace the dc controller PCA. See Dc controller PCA. Possible cause Recommended action(s) The media does not meet specifications or is not stored properly. 1 Turn over the stack of media in the tray. Also try rotating the media 180 degrees. 2 Check the media for type and quality. Replace the media if it does not meet specifications, and advise the customer to use the HPrecommended media and to store it correctly. See Media specifications. Image-formation troubleshooting 391