Dentsply Sirona Cavitron 300 Series, Руководство по обслуживанию

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4. Carefully cut the nylon cable tie and unplug the
4-wire connector (back-left) from J104 on the
PSOC PC Board.
5. Carefully lift off the PSOC PC board. Keep the PC
board level as it is raised to prevent bending the
pins on the connectors. Handle the PC board by
the edges only.
6. Carefully align the pins on the replacement PSOC
PC board with the connectors on the power board.
Keep the board level and slowly insert the pins
until they are fully seated.
7. Re-connect the 5-wire and 4-wire connectors onto
the PSOC PC board.
8. Be sure the (back left) 4-wire harness to the USB
PC board is fastened with a nylon cable tie. See
photo above.
9. 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.
10. Align and place cover assembly on the scaler unit.
11. Plug the power cord into the power entry module.
12. Reconnect the blue water hose to the push-lock
water fitting.
13. Power up the unit using the power rocker switch
and test unit operation.
14. Calibrate and final test the Cavitron ® 300 Series
Scaler using the Dentsply Sirona Preventive -
Product Service Standard Operating Procedure,
PS-00211.
15. Align the Cover on the Bottom Housing and
securely fasten the four (4) #6 x 1/2” Hi-Lo Torx
screws using a screwdriver.
H. Power PC Board Replacement:
(Lower PC Board Assembly)
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. Unplug the 5-wire connector (front-right) from J13
on the PSOC PC Board.
4. Carefully cut the nylon cable tie and unplug the
4-wire connector (back-left) from J4 on the PSOC
PC Board.
5. Unplug the white 8-wire connector from the front
of the Power PC board.
6. Carefully lift off the PSOC PC board. Keep the PC
board level as it is raised to prevent bending the
pins on the connectors.
7. Use a #1 Phillips screwdriver and remove the two
(2) #4-40 x 1/2" machine screws on the Power
PC board.
8. Replace the Power PC board. The large white
connector should be in the front.
9. Install the replacement Power PC board on the
metal studs. Apply Loctite 242 Threadlocker to
the two (2) #4–40 x 1/2" machine screws. Install
screws on the upper-right and lower-left holes.
Torque them to 2 + 0.5 in.-lbs.
10. Carefully align the pins on the PSOC PC board
with the connectors on the power board. Keep
the board level and slow insert the pins until they
are fully seated.
11. Re-connect the 5-wire and 4-wire connectors
onto the PSOC PC board. Use a nylon cable tie
to fasten the 4-wire harness to hole in the PSOC
PC board.
12. Plug the white 8-wire connector in the front of the
Power PC board.
13. 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.
Power
PC Board
Assembly
(Lower)
Terminal Strips
for PSOC PCB
8-Wire
Connector
PSOC PC Board Stack
Plug
4-wire
connector
into
J104
Plug
5-wire
connector
into
J13
Nylon
Cable
Wrap