HP M5025 Service Manual - Page 517

Repeating defects 1. Print a few more pages to see if the problem corrects itself. 2. The print cartridge or fuser is damaged. The circumference of the photoconductive drum inside of the print cartridge is 96 mm (about 3.7 inches). If the defect repeats at this interval, the defect is associated with the drum. Repetitive defects caused by the fuser roller repeat at 94.0 mm (about 3.7 inches) Because the fuser roller is just 2 mm (0.07 inch) smaller than the photoconductive drum it can be difficult to distinguish defects that the photoconductive drum causes from those that the fuser roller causes. Inspect the drum for scratches or other damage. Replace the print cartridge for defects that repeat at 44 mm (1.7 inches) or 58 mm (2.3 inches). If the problem persists, and the defect repeats at the 75.0 mm (2.95 inches) or 94.0 mm (about 3.7 inches), replace the fuser. 3. Clean the inside of the device and then run a cleaning page. See Clean the device on page 98. 4. The rollers are dirty. A dirty roller in the paper path can cause a repetitive defect. Examine and clean (or replace) the rollers in the paper path. 5. Preprinted form paper is used. Some preprinted forms (for example, letterheads) use an ink that cannot withstand the high temperatures in the fuser. Check the media for type and quality. Replace the media, and advise the customer to use the HP-recommended media and to store it correctly. Also see Repeating image on page 487. Repeating image Dear Mr. Abhjerhjk, The dhjhfiuhu if teint hhkjhjnf j us a weue jd, fnk ksneh vnk kjdfkaakd ss hsjhnckkajhdhf kashfhnduujdn. Pkshkkhklhlkhkhyufwe4yrh9jjflkln djd skshkshdcnksnjcnal aksnclnslskjlncsl nas lnslna, ncnsljsjscljckn nsnclknsllj hwlsdknls nwljs nlnscl nijhsn clsncij hn. Iosi fsjs jlkh andjna this is a hn. jns fir stie a djakjd ajjssk. Thsi ius vnvlu tyeh lch afted, and when hghj hgjhk jdj a dt sonnleh. Suolklv jsdj hvjkrt ten sutc of jthjkfjkn vjdj hwjd, an olk d .at fhjdjht ajshef. Sewlfl nv atug ahgjfjknvr kdkjdh sj hvjk sjskrplo book. Camegajd sand their djnln as orged tyehha as as hf hv of the tinhgh in the cescmdal vlala tojk. Ho sn shj shjkh a sjca kvkjn? No ahdkj ahhtuah ahavjnv hv vh aefve r Tehreh ahkj vaknihidh was skjsaa a dhkjfn anj cjkhapsldnlj llhfoihrfhthej ahjkkjna oa h j a kah w asj kskjnk as sa fjkank cakajhjkn eanjsdn qa ejhc pjtpvjlnv4purlaxnwl. Ana l, and the askeina of ahthvnasm. Sayhvjan tjhhjhr ajn ve fh k v nja vkfkahjd a. Smakkljl a sehiah adheufh if you do klakc k w vka ah call lthe cjakha aa d a sd fijs. Sincerely, Mr. Scmehnjcj This type of defect might occur when using preprinted forms or a large quantity of narrow media. 1. Print a few more pages to see if the problem corrects itself. 2. Make sure that type and quality of the media you are using meet HP specifications. 3. If the distance between defects is 47 mm (1.9 in), 62 mm (2.4 in), or 96 mm (3.8 in), the print cartridge might need to be replaced. ENWW Solving image-quality problems 487