Oki c911 Disassembly & Reassembly Procedures page 37

Gently unsnap the black cable guide from
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the top edge of the card.
Carefully remove the card cage and gently unthread all wire harnesses.
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Remove the plastic insulator sheet by
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unsnapping the 3 plastic tabs at the bottom
of the insulator sheet.
Remove 5 black screws and 1 silver screw
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holding the HVPS board to the frame.
Gently unclip the 5 plastic tabs holding the
HVPS board in place.
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