Casio PX-330BK Service Manual & Parts Manual page 16

3. Place the main unit with the keys facing up. Undo three screws on the right side case.
4. Remove the right side case.
Right side case
5. Undo three screws on the left side case.
6. Remove the left side case.
NOTE: The power switch, the M900-HPA1 PCB and the pitch bend are assembled to the left side
case. Do not pull the left side case forcibly.
M900-HPA1 PCB Power switch
Pitch bend Left side case
7. Undo and remove two screws from each side case (S-CASE-IL and S-CASE-IR).
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