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CFSHELF-5538: Fan Speed runs Constantly 20470 RPM on NS224 shelf

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Issue

  • NSM100B module firmware version 0404
  • No error reported by hardware monitoring
  • All fans of the NSM100B module run at 20470 RPM continuously
    Example:
    [1] 20470 RPM
    [2] 20470 RPM
    ...
    [19] 20470 RPM
    [20] 20470 RPM


  • All temperature sensors are in Normal temperature range
    Example:

[1] 24 C (75 F) (ambient) Normal temperature range
[2] 28 C (82 F) Normal temperature range
[3] 25 C (77 F) Normal temperature range
...
[22] 45 C (113 F) Normal temperature range
[23] 47 C (116 F) Normal temperature range

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