Display Sub-Assembly Replacement - Dentsply Sirona Cavitron 300 Series Service Manual

5. Carefully and gently use the tip of your index
finger to lift up on the black tab securing the
orange ribbon cable at J3 on the FPGA PC board.
The orange ribbon cable will release.
6. Unplug the red and white wire connector from J4
on the FPGA board.
7. Remove the four (4) #6 x 1/2" screws on the FGPA
PC board.
8. Carefully lift off the FPGA PC board. The ribbon
cables on the Display Sub-Assembly are fragile
and must be handled with care.
9. Replace the FPGA PC board. The speaker should
be located at the bottom of the touch screen
assembly
10. Fasten the FPGA PC board with the four (4) #6 x
1/2" Torx screws.
11. Plug in the red and white wire connector at J4.
12. Carefully and fully insert the white ribbon cable in
the connector and press the black tab to lock it in
place.
13. Carefully and fully insert the orange ribbon cable
in the connector J3 and press the black tab to lock
it in place.
Carefully lift left
edge of black tab
to release orange
ribbon cable
M. Display Sub Assembly Replacement:
Insert white
ribbon cable
then depress left
edge of black
tab to secure
Insert orange
ribbon cable
then depress left
edge of black
tab to secure
14. On the back of the cover assembly, plug the two-
wire connector into J1 and the 5-wire connector
into J2 from the FPGA PC board. Ensure the two
wire harnesses are tied together with a nylon
cable tie.
15. Align and place cover assembly on the scaler unit.
16. Plug the power cord into the power entry module.
17. Reconnect the blue water hose to the push-lock
water fitting.
18. Power up the unit using the power rocker switch
and test unit operation.
19. Calibrate and final test the Cavitron
Scaler using the Dentsply Sirona Preventive -
Product Service Standard Operating Procedure,
PS-00211.
20. Align the Cover on the Bottom Housing and
securely fasten the four (4) #6 x 1/2" Hi-Lo Torx
screws using a screwdriver.
1. Follow the steps above in Section A for "Top Cover
Removal."
2. Ensure that the power cord has been unplugged
from the rear power entry module.
3. Lay the touch screen panel on a soft surface to
prevent scratches.
4. Carefully use the tip of your index finger to lift up
on the black tab securing the white ribbon cable
on the FPGA PC board. The white ribbon cable
will release.
300 Series
®
Unplug
2-wire
connector
at J1
Unplug 5-wire
connector
at J2
19