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Sharp MX2310U

  • Code: L4-51
  • Description: Process fan 2 trouble
    The fan operation signal is not detected.
  • Causes: Fan trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
  • Remedy: Replace the fan. Replace the PCU PWB. Check the connector and the harness. Check that the fan is rotating after turning ON the power.
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