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HAWK-800 Constructions and Installations Instructions –
Modifying the Poly-800 Main Board
At this point, the real work begins to modify the Poly-800 main circuit board. So a word of caution, these tasks require
patience and care. If you make any errors from this point forward, you could render your synthesizer permanently
inoperable. That is, you could break your synthesizer and make it almost un-repairable. If you are unsure of your ability to
carry out any of the tasks you should consider having the work done by a qualified electronics technician.
Step 5a – Opening the Poly-800 or Poly-800 MK2
If you are installing the kit into an EX-800 then jump to step 5b.
Place the Poly-800 (or Mk2) face down (keyboard down) with the rear facing toward you.
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Remove the 3 short screws from the front edge of the keyboard.
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Remove the 9 medium length screws from the perimeter of the keyboard.
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Remove the 4 threaded screws from the bottom of the keyboard.
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Set the screws aside somewhere safe where they will not be lost or misplaced.
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Carefully lift and then hinge the bottom section of the Poly-800 rolling it over to bring it toward you. Ensure that
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you do not strain the wire bundles that join the bottom section to the top section of the keyboard.
Remove the two guitar strap pegs and set them aside somewhere safe where they will not be lost or misplaced.
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Step 5b – Opening the EX-800
If you are upgrading an EX-800 then do the following.
Remove the four (4) small black screws from the upper rear edge of the EX-800.
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Remove the four (4) small black screws from the left and right hand sides of the EX-800.
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Set aside the screws in a safe location where they will not be lost or misplaced.
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Step 6 - Remove the main board
Locate the main board KLM-596 (for the Mk2 the main board is KLM-1032) and small brown secondary board
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(KLM-601) and disconnect ALL cable assemblies and remove the mounting screws so that you can remove the
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