Oki c911 Disassembly & Reassembly Procedures page 36

Gently disconnect the cable clips securing
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the cable harnesses to the card cage and
carefully unthread the cable harnesses
from the card cage.
Unplug the cables in the POW24 cable
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guide from board F1D.
Remove the 6 silver screws securing the
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card cage to the frame.
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