Let me do some research, send me the part number and see what I can find, the sun stuff is all old school, wires and mostly tubes that prob is all on a board. A schematic for that will prob be needed. I do not even have a modual here to test.No paperwork. The instructions are printed on the back of the tester. I tried it on 3 modules and none tested good. One I know is a good one. it's like this one:View attachment 1715066478