HP 3015 Service Manual - Page 224
Solving image-quality problems, Checking the print cartridge - troubleshooting toner
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Solving image-quality problems Note If the problem occurs when printing, see Solving print image-quality problems. If the problem occurs when copying or scanning, see Solving scanning (copying) image-quality problems. Also, see Solving paper-feed problems and Jams occur in the automatic document feeder (ADF). Some image-quality problems can be isolated by performing printer functional tests. See Functional checks. Image quality problems can also be caused by using cables that are not IEEE-1284 compliant. Checking the print cartridge Image-formation defects are frequently the result of problems in the print cartridge. If the source of the defect is not immediately evident, always replace the print cartridge before troubleshooting image defects. Use the following checklist to make sure that the print cartridge is still operable. □ Make sure that the print cartridge is seated properly. □ Check the print cartridge to see if it has been disassembled or refilled. □ Inspect the print cartridge to see if toner is leaking through worn seals. □ Check the surface of the photosensitive drum in the cartridge to see if it has been damaged or scratched. Touching the drum contaminates the photosensitive surface and can cause spotting and image defects. □ Blurred areas on printed pages indicate that the photosensitive drum in the cartridge has been overexposed to light. Because overexposure to light causes permanent damage to the photosensitive drum, the cartridge should be replaced. To redistribute the toner in the print cartridge Before installing a new print cartridge or when the toner begins to run low, redistribute the toner by rotating the cartridge back and forth five or six times. Note Solving print image-quality problems Use the following tables to help solve problems with printed pages. Some image-quality problems can be isolated by performing printer functional tests. See Functional checks. Image-quality problems can also be caused by using cables that are not IEEE-1284 compliant. 206 Chapter 6 Troubleshooting ENWW