Stair Light Kit - Control Unit Test Procedure

Once the board has been constructed it is a good idea to fully test it before you start on the field wiring. Follow the following steps and ensure you get the correct results. These steps are assuming that you have just completed all of the steps in the Control Board Assembly section. During the testing it is very important to ensure you are working on a non metallic surface with no metal particles on it (no resistor clippings etc). It is also important that no wires are connected or removed while the unit has power attached. To power down the control unit unplug the wall transformer and consider the circuit dead 10 seconds after the power on indicator goes out.

To use this table perform the task in the “Do This” column, check to see that you get the expected result that is listed in the “Check Results” column. If you do not get the expected result the “Solution” column will provide some ideas of what the problem could be.

Do This

Check Results

Solution

  • Start with nothing connected to the terminal block.

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  • Connect the power supply wires to the unit. See the connecting power section for directions on how to do this.
  • Plug in the wall transformer. (Power up)

Green power on light should turn on.

  • Reverse the power wires at terminal 1 and 2.
  • Ensure the fuse element is not blown.
  • Check to see that D1, D2, U2 are installed with the correct orientation.
  • Power down.
  • Connect a wire from terminal 5 to terminal 24.
  • Connect a wire from terminal 6 to terminal 7.
  • Connect a wire from terminal 6 to terminal 8.
  • Power up.

Using a stair light as a voltage tester check to see if all of the stair outputs have power. Look at the Stair Light External Connections for the connection locations. Once you are done 10 Outputs will have been tested and terminals 9 through 23 would have been used.

  • If any of the outputs do not have any power check the Stair Lighting Control Board schematic to see what transistor and resistor are connected to the bad output. Check the solder joints on these components.
  • If output terminal 11, 14, 17, 20 and 23 are not functioning ensure terminal 7 has no poor solder joints, trace this all the way back to the chip pin.
  • If output terminal 9, 12, 15, 18 and 21 are not functioning ensure terminal 8 has no poor solder joints, trace this all the way back to the chip pin.
  • Power down.
  • Remove the wire from terminal 7 to terminal 6.
  • Connect a wire from 7 to terminal 5.
  • Power up.

Using a stair light as a voltage tester check to see which stair outputs have power. Look at the Stair Light External Connections for the connection locations. Once you are done 10 Outputs will have been tested and terminals 9 through 23 would have been used. The only outputs that should be powered are terminals 9, 12, 15, 18 and 21.

Ensure terminal 7 has no poor solder joints, trace this all the way back to the chip pin.

  • Power down.
  • Remove the wire from terminal 7 to terminal 5.
  • Connect a wire from 7 to terminal 6.
  • Remove the wire from terminal 8 to terminal 6.
  • Connect a wire from 8 to terminal 5.
  • Power up.

Using a stair light as a voltage tester check to see which stair outputs have power. Look at the Stair Light External Connections for the connection locations. Once you are done 10 Outputs will have been tested and terminals 9 through 23 would have been used. The only outputs that should be powered are terminals 11, 14, 17, 20 and 23.

Ensure terminal 8 has no poor solder joints, trace this all the way back to the chip pin.

  • Power down.
  • Connect a stair light to terminals 3 and 4. Red to terminal 3 and black to terminal 4.
  • Power up.

Check to see that the stair light is dimly flickering; you might have to turn off the lights in the room to see that it is flickering.

Check the Q1, R2 and pin 2 of the chip for poor solder joints.

  • Power down.
    • Remove all wires from all of the terminal blocks.
    • Testing is complete.

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