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Chapter 4: Clean Fiber Endfaces
Always Clean Endfaces Before Tests
When a fiber optic link does not operate correctly, the cause is
frequently a dirty endface in a connector. Figure 33 shows
examples of dirty endfaces and an endface that has been correctly
cleaned and polished.
Cleaned and polished correctly
Dirty connector on
a patch cord
Figure 33. Examples of Clean and Dirty Fiber Endfaces
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Wiped on a shirt
Contamination that remains
after alcohol dries
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