HP Enterprise 500 manual Print quality troubleshooting tools, Repetitive defects ruler

Print quality troubleshooting tools

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 3-47Repetitive defects ruler

0 mm

27 mm

32 mm

44 mm

49 mm

50 mm

63 mm

66 mm

75.5 mm

76 mm

77 mm

78 mm

80 mm

92 mm

105 mm

		Distance between defects	Product components that cause the defect
		27 mm	Print cartridge: primary charge roller
		32 mm	Print cartridge: developer roller
		44 mm	Printer: primary transfer roller
		49 mm	Print cartridge: RS roller
		50 mm	Printer: secondary transfer roller
		63 mm	ITB: secondary transfer backing roller
		66 mm	Printer: distance from secondary transfer roller to fuser
		75.5 mm	Print cartridge: OPC drum
		76 mm	ITB: driven roller
308	Chapter 3 Solve problems		ENWW