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NETWORK VP HOW-TO: checking voltages

To power down a Network VP system, flip the circuit breaker on the power supply inside the cabinet to the "Off" position.


  • Look for the 3 voltage indicator lights on the Power Distribution Board. When on, these lights show the presence of 5V, 9V, and 12V, as indicated on the board.
  • If none of the of the voltage indicator lights on the Power Distribution Board are on, then power may not be getting to it from the Power Supply. Check the 4-amp circuit breaker on the Power Supply to see if it is tripped. See Picture 1. Reset it if this is the case.
  • If the circuit breaker is not tripped, check for 13V AC using a voltmeter at the white 4-pin connector on the Distribution Board. See Picture 2.
  • Also, the Power Distribution Board voltages can be checked at the 4-pin connector next to the indicator lights using a voltmeter. The pins on this connector, left to right, are connected to Ground, +12V, +9V, and +5V. See Picture 3. Place the black lead of the voltmeter on the Ground pin and measure the desired voltage using the red lead on the appropriate pin. Be very careful not to touch more than one pin at a time wither either of the two leads.
  • If the voltages on the Power Distribution Board are correct, look for the voltage indicator lights on the Faceplate. See Picture 4. These lights should also be on, showing the presence of their corresponding voltages.
  • If any of these three lights are not on, but the same voltage indicator lights on the Power Distribution Board are on, then there is an open circuit or bad connection within the Faceplate, Power Distribution Board, or the 40-Pin Cable connecting them together.