HP LaserJet 1010 Service Manual - Page 119

Troubleshooting tools, Repetitive image defect ruler, Print cartridge 30.8 mm 1.21 inches

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Troubleshooting tools If the printer output has a consistent, repetitive defect, then use the following ruler to predict which part needs to be replaced based on the measured distance between the repetitions of the defect. Repetitive image defect ruler First occurrence of print defect (0.00 inches) Print cartridge 30.8 mm (1.21 inches) Print cartridge 37.7 mm (1.48 inches) Fuser (Fixing assembly) 41.0 mm (1.61 inches) Transfer roller 46.3 mm (1.82 inches) Paper pick-up assembly 55.2 mm (2.17 inches) Fuser (Fixing assembly) 56.5 mm (2.22 inches) Print cartridge 76.3 mm (3.00 inches) Figure 6-6. Repetitive image defect ruler ENWW Troubleshooting tools 107

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Troubleshooting tools
If the printer output has a consistent, repetitive defect, then use the following ruler to predict
which part needs to be replaced based on the measured distance between the repetitions of
the defect.
Repetitive image defect ruler
First occurrence of print defect (0.00 inches)
Transfer roller 46.3 mm (1.82 inches)
Print cartridge 37.7 mm (1.48 inches)
Print cartridge 30.8 mm (1.21 inches)
Paper pick-up assembly 55.2 mm (2.17 inches)
Fuser (Fixing assembly) 56.5 mm (2.22 inches)
Fuser (Fixing assembly) 41.0 mm (1.61 inches)
Print cartridge 76.3 mm (3.00 inches)
Figure 6-6.
Repetitive image defect ruler
ENWW
Troubleshooting tools
107