Hello,
Even though there is a document named "service manual" for the system two range of analyzers, there is nothing available that is useful for repairing.
I have this manual and it only contains the calibration and adjustment procedures. Don't be fooled by the drawings - they don't show anything. And it is difficult to get and expensive.
Perhaps the end of the AP2700 series (and previous ones a long time ago) would let AP to publish actual service manuals (like for the system one devices), but I'm not very hopeful...
Jerome.