source:Industry News Popular:adapter release time:2021-06-02 14:55:52 Article author:sznbone
| No Output | ||||
| No. | Reason | Checking Point | Troubleshooting | Remark |
| 1 | Power cord not well connected | Fuse open or not? | Change to same fuse with internal fuse | Pay attention to inrush current of the fuse |
| Power cord misconnected? ACL or ACN misconnect to FG? | ACL/CAN connect to L/N properly | |||
| 2 | Input voltage mistake | If model with 115/230 places to right place? | Switch to right place | |
| 3 | Wiring erroe or loose | If connect to load properly? Wrong polarity? | Connect output +V/-V to right place | |
| Terminal or connector loose? | Fasten screw or confirm connector normal | |||
| If short circuit with connecting wire? | Confirm good insulation with connecting wire | |||
| 4 | OVP | Output voltage too high or over adjustable resistor range? | Power off, and adjust adjustable resistor to middle place, and power on after 1 minute | Normally the range of adjustable resistor is 240° |
| 5 | OCP | If something causes over current or sudden big current? | Check rated output current and actual current | |
| 6 | OTP | If temperature too high and over the highest temperature limit? | Power off and cool at ambient temperature, power on after 30 minutes, and keep operating at proper environment. | Use outer cooling to shorten power-on waiting time |
| 7 | Congeal on power supply | If there is water or environment temperature becomes high suddenly? | Stay far away from water and keep operating at steady environment. | Easy to congeal when temperature change suddenly |
| Output Abnormal(Too high, too low or unstable) | ||||
| No. | Reason | Checking Point | Troubleshooting | Remark |
| 1 | Output voltage too high | Output voltage of adjustable resistor too big? | Adjust output voltage anticlockwise to proper place | |
| If connect other power supply to same load? | Change load line and confirm no higher voltage than output voltage of the power supply | |||
| 2 | Output voltage too low | If output voltage lower than rated value?If wave form distortion of output voltage? | Measure input voltage and confirm input voltage and wire If yes, change to AVR | Confirm 115/<, SPAN>230 switch place right or not |
| 3 | Output voltage set too low | Output voltage of adjustable resistor set too low? | Adjust output voltage clockwise to a little higher | |
| 4 | Output wire not right | If output wire too thin, too long? Connector or terminal not good or loose? | Change to thicker or shorter wire, or check connector or fasten screw | Confirm output voltage(not on load) choose proper wire based on wire pressure table |
| 5 | OCP | If output current too big and over rated current? | Measure actual output current and confirm within spec value | |
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