HP Color LaserJet Enterprise CM4540 HP Color LaserJet Enterprise CM4540 MFP - - Page 138

Repeating defects 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. Figure 7-1 Repetitive defects ruler 0 mm 27 mm 32 mm 44 mm 48 mm 51 mm 55 mm 63 mm 76 mm 80 mm 96 mm 101 mm Distance between defects 27 mm 32 mm 44 mm 48 mm 51 mm 55 mm 63 mm 76 mm 76 mm 80 mm 96 mm 101 mm 118 Chapter 7 Manage supplies Product components that cause the defect Print cartridge Print cartridge Transfer unit Print cartridge Transfer roller Print engine Transfer unit Print cartridge Fuser Fuser Print engine Print engine ENWW