HP CP4025DN Laser CC490A Repetitive defects ruler

Repetitive defects 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.

Figure 10-2Repetitive 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	Product components that cause the defect
27 mm	Print cartridge
32 mm	Print cartridge
44 mm	Transfer unit
48 mm	Print cartridge
51 mm	Transfer roller
55 mm	Print engine
63 mm	Transfer unit
76 mm	Print cartridge
76 mm	Fuser
80 mm	Fuser
96 mm	Print engine
101 mm	Print engine

224 Chapter 10 Solve problems ENWW