Valleylab Force FX-8C, Service Manual

Page: 183 / 218

Power Supply/RF Board Replacement
Replacement Procedures
Force FX-8C Service Manual 7-29
Step 3 – Install Components on the New Board
Follow these steps to reinstall the components you removed from the
existing board onto the new Power Supply/RF board.
A.
Install the fan on the new Power Supply/RF board.
(1)
Position the fan on the underside of the Power Supply/RF board
and install the four nuts and screws that secure it to the board.
(2)
Connect the fan control connector to J4 on the Power Supply/
RF board.
B.
Install the low voltage power supply on the new board.
(1)
Place the low voltage power supply on the Power Supply/
RF board and install the four screws that secure it to the board.
(2)
Connect the 6-pin low voltage power supply cable to J7 on the
Power Supply/RF board.
(3)
Connect the 4-pin low voltage power supply cable to J11 on the
Power Supply/RF board.
C.
Install the right heat sink.
(1)
On the right side of the Power Supply/RF board, slide the right
heat sink components into the matching connectors.
(2)
Install the two screws that secure the heat sink to the rail under the
board.
(3)
Connect the right heat sink cable to J12 on the Power Supply/
RF board.
D.
Install the left rear heat sink.
(1)
Slide the left rear heat sink components into the matching
connectors on the left rear of the Power Supply/RF Board.
(2)
Install the two screws that secure the heat sink to the rail under the
board.
(3)
Tighten the screw securing the component clip over the Triac
Thermister.
(4)
Connect the 4-wire heat sink (bridge rectifier) cable to J8 on the
Power Supply/RF board.
E.
Install the left front heat sink on the new board.
(1)
Slide the left front heat sink into the matching connectors on the left
front of the Power Supply/RF board.
(2)
Install the two screws that secure the heat sink to the rail under the
board.
F.
Position the support bracket over the heat sinks and install the three
screws that secure the bracket to the left rear heat sink (plastic screw)
and to the left front and right heat sinks (two metal screws).