Detecting crossover part from board

Hi guys i have a Panasonic ch9 . Bookshelfs are ok but amplifier is dead . It have onboard crossover . Its a pre amp if i say it right . I want to detach crossover from board and attach it directly to speakers . Can you help me about it please
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Yeah the grey and the blue speaker outputs suggest something going on
But the single stereo chip in there speaks for two channels.
The busy thing is to search for all the auxiliary functions such as s/by to put the amplifier into operation.
Edit: oh, no! You meant to isolate the amplifier and get the (under volume) line-out.
That's fairly easy!
 
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