Level A : (Over-All maintain)This level maintains will dis-assemble all the parts of feeders to do the detail cleaning and defect parts replacement, and finish with detail calibration. Each feeder need about 1 hour / engineer work.
Level A Feeder Maintenance Process:

Level B: (Basic cleaning and calibration maintain)
This level will only apply the feeder jig calibration and the outlook cleaning, it takes 15 to 20 minutes per feeder per engineer work.
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