3. Adaptor Test

The adaptor test checks that the adaptor gives 6.5 V + 10% on and off load with 240 V + 10% input. In the following test the adaptor is serviceable if the meter reads GREEN in all of the checks.

CAUTIONS:

DO NOT TOUCH VARIABLE TRANSFORMER OUTPUT WHEN DEVICE IS CONNECTED TO THE MAINS.

DO NOT CONNECT/DISCONNECT ADAPTOR FROM THE FLYING LEAD WHEN VARIABLE TRANSFORMER IS CONNECTED TO THE MAINS.

Procedure

1. Connect adaptor jack to the test box.
2. Connect the adaptor into the flying mains socket of the variable transformer (Item 12).
3. Connect the adaptor jack to the test box (Item 13).
4. Set the variable transformer to 90%.
5. Plug in the variable transformer to the mains socket.
6. Check that the needle on the test box meter is in the GREEN band.
7. Press and hold the button on the side of the test box and check that the meter needle remains in the GREEN band. Release the button.
8. Set the variable transformer to 110% (maximum) and check that the meter needle is in the GREEN band.
9. Press and hold the button on the side of the test box and check that the meter needle is in the GREEN band. Release the button.
10. Carry out the following:
    • Disconnect the variable transformer from the mains.
    • Disconnect the adaptor from the transformer and from the test box.