Apex Digital iX Series Service Manual page 25

5. Check the flow sensor tube should connect to the bottom.
6. Make sure the Wi-Fi FFC cables pass through the outer slot on the board and the FFC cable should be
assembled under the LCD display. The connectors should be closed tightly.
7. Check if the flow sensor tube and pressure sensor tube are properly connected.
8. Finally, replace the LCD display back to the mainboard <Refer to 6-2>.