Schematic or help needed for White's Coinmaster TR-Discriminator

[neptune769]

Hello Everyone,
I was given a very old White's Coinmaster TR-Discriminator. It has three wires that are hanging loose. Two black and one green. I know two come from the speaker. If anyone has one or has the schematic I would greatly appreciate some help. I know its old but it is still a good starter for my daughter. I would love to get it going.

Thanks you,
Dennis

[Carl-NC]

You'll have to be more specific, as there were a whole bunch of Coinmaster models made over the years.

[neptune769]

The model number inside says CM4-D. Here are some photos.

Thank you,