Polaroid FXM-3211C Service Manual page 21

(3) Disconnect cables on Main Board.
(4) Remove all screws from the Main Board (Location A and B) and remove.
A
Note: Before returning this product to the end user, you must follow the steps
outlined in the section, Before Returning This Product to the User, on page 16. This
procedure ensures that the chassis will not cause electric shock.
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A
B