Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
This claims to be a source for an RAR file that contains either schematic and/or datasheet:
however when I click on the link I get a screen full of garbage characters, not a file download. Perhaps ? that screen, saved to an .RAR file, might be actually usable. I do not know.
A service manual for this machine might be useful even if it did not contain a schematic:
and this site, though more pricey, can be recommended as reliable in the majority of cases or all cases:
in a paper form, or
as a download or computer file.