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Searching finds that it is a Cybernet board likely built for the overseas export market.
PCMA031A looks like the board number but I don't see schematics posted online.
If you can open the radio and post some pictures of the main board to see if you can confirm that board number.
At the link below is a extensive list of Cybernet radios, I do not see that board listed.
You may have to identify with whatever is close and work with that.
See link, sorry I do not speak French.
If you scroll down there are downloads.
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