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Discussion

On a dot-matrix printer, regular lube maintenance should be followed, but this component should never be lubed:

  • A.Platten bearings
  • B.Carriage rails
  • C.Printhead
  • D.Paper advance bearings

Answer: C

Correct answer: Printhead

The printhead pins must run dry: oil collects paper dust and jams them, and they rely on airflow for cooling. The rails and bearings are the parts that do need lubrication.

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