YXX157A | ABB Circuit board

Catalog Description:Circuit boardYT212001-AH/2 CIRCUIT BOARD Package Level 1 Depth / Length:25.5 cmPackage Level 1 Gross Weight:0.296 kgPackage Level 1 Height:4.5 cmPackage Level 1 Units:1 piecePackage Level 1 Width:9 cmIncorrect power supply voltages can be caused by defective components in the power supply circuit or in the EME circuit. A component in the EME circuit can fail and overload the power supply circuit. This overload can cause an additional failure in the power supply circuit. Use the following method to supply power to the EME circuit without the use of the power supply circuit. Connect an external power supply (adjustable output with current limiting) to the appropriate test points on the circuit board. Do not apply power to the instrument terminals while the external power supply is connected to the EME. By using the external power supply, the defective component in the EME circuit can be located and replaced. Next, remove the external power supply and connect power to the instrument. Now, any defective component in the power supply circuit can be located and replaced