BT Line tester

[veedub565]

Hi,

Long shot but just wondering if anybody happens to have a circuit diagram for the SA9083 telephone line tester ? I think originally they were made by Robin but latterly JSD Testphone ltd. There is a picture of what it looks like here http://www.telkominternational.com/tester-sa9083.html

I already have a copy of the test procedure and user manual.