HP LaserJet 4345 HP LaserJet 4345mfp - User Guide - Page 248
Repetitive defect ruler, If the defect repeats at 94.0 mm 3.75 inch intervals - laserjet 4345mfp fuser
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Repetitive defect ruler If defects repeat at regular intervals on the page, use this ruler to identify the cause of the defect. Place the top of the ruler at the first defect. The marking that is beside the next occurrence of the defect indicates which component needs to be replaced. 1 2 3 4 5 6 1 First occurrence of the defect 2 Print cartridge (37.7 mm [1.5 inches]) 3 Transfer roller (part of the maintenance kit) (47 mm [1.9 inches 4 Print cartridge (54.0 mm [2.13 inches]) 5 Print cartridge (62.8 mm [2.5 inches]) 6 Fuser (part of the maintenance kit) (94.0 mm [3.75 inches]) 7 Print cartridge (94.2 mm [3.75 inches]) To identify if the print cartridge is the problem, insert a print cartridge from another HP LaserJet 4345mfp, if one is available, before ordering a new print cartridge. If the defect repeats at 94.0 mm (3.75 inch) intervals, try replacing the print cartridge before replacing the fuser. 234 Chapter 10 Solving problems ENWW
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