Casio QV-3500EX Service Manual & Parts Catalogue page 51

POWER-PCB (PCB-716D-PW)
NOTE: The Power PCB for QV-3500EX is identical to that for QV-3000EX except that one of the parts of the
power PCB for QV-3500EX; the circuit for CF Card access lamp, is deleted.
Therefore, these two Power PCBs are not compatible each other.
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