Who have RDF900 radio schematic?

I bought a pair of RDF900 radio,but it doesn't work now.Maybe it is burnt out .I want to mend it,but i don't find schematic.I find max2235 and SI1002 datasheet, but i don't know layout.I don't know some components,who can help me?? thank you very much!

3691318355?profile=original

SI1002.pdf

max2235.pdf

Software manual.pdf

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