Casio XJ-450 Service Manual & Parts List page 21

Removing the fan unit
1 Remove three screws (S10).
Note: A rubber spacer, which is a very small part, is attached to the screw. Be careful not to lose it.
2 This removes the fan unit.
Note: The cushion around the fan frame cannot be reused.
Replace it with a new one once it is peeled off.
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Screw (S10)
Screws (S10)