Hi Mashak,
Based on the schematic of the board, you must transfer the jumper of W17 to 1 to make the crystal supply clock signal to U3. W3 is for enabling the differential clock. You can return the jumper of W3 to its default position, which is connected to DVDD. That is, a differential clock signal will be supplied to REFCLK of the AD9852.
Best regards,
Mark