H3C S5120-SI Installation Manual

Also see for S5120-SI Series: Quick start guide Installation manual Operation manual Configuration guide Command reference

Contents

H3C S5120-SI Installation Manual Manual pdf 37 page image

29Maintenance and troubleshootingPower supply failureThe S5120-28P-HPWR-SI switch supports AC-only power input, RPS-only power input, and RPSand AC power inputs. The other switch models support only AC power input.To determine whether the power supply system of the switch is operating correctly, observe thepower status LED (Power) or RPS status LED (RPS) on the switch.AC power input failureSymptomThe power status LED is off.SolutionTo resolve the problem:1. Verify that the AC power cord is connected correctly and no faults occur on the AC-inputreceptacle on the switch and the source AC power outlet.2. Verify that the AC power supply system is operating correctly.3. Verify that the ambient temperature is in the acceptable range and good ventilation is providedfor the power supply system of the switch.PoE switches support over-temperature protection, allowing the internal power module to enterthe protection state if the temperature is too high and then restore power supply after thetemperature returns to the acceptable range.4. If the problem persists, contact H3C Support.RPS power input failureSymptomThe power status LED and RPS status LED are off.SolutionTo resolve the problem:1. Verify that the RPS DC power cord is connected correctly.2. Verify that the RPS is operating correctly.3. Verify that the ambient temperature is in the acceptable range and good ventilation is providedfor the power supply system of the switch.PoE switches support over-temperature protection, allowing the internal power module to enterthe protection state if the temperature is too high and then restore power supply after thetemperature returns to the acceptable range.4. If the problem persists, contac H3C Support.AC and RPS power input failureSymptom• The power status LED is off.