Covidien Force FX, Руководство по обслуживанию

Страница: 198 / 246

Left Rear Heat Sink and Component Replacement
7-18
Force FX Electrosurgical Generator C Service Manual
Replace Left Rear Heat Sink Components
Components of the left rear heat sink
• To replace the HVPS (high voltage power supply) primary damping resistor, remove
the screw and shoulder washer that secure it to the heat sink. Position the new
resistor on the heat sink and reinstall the washer and screw.
• To replace one or more of the four HVPS FETs, remove the screw and shoulder washer
that secure the FET to the heat sink. Position the new FET on the heat sink and
reinstall the washer and screw.
• To replace the bridge rectifier, note the orientation of the four wires. Mark them for
reinstallation. Then, detach them from the rectifier.
Remove the screw that secures the rectifier to the heat sink. Position the new bridge
rectifier on the heat sink and reinstall the screw.
Connect the four wires to the appropriate terminal on the rectifier.
Install the Left Rear Heat Sink
1.
Position the left rear heat sink over the matching connectors on the Power Supply/RF
board. Slide the components into the connectors.
2.
Install the two screws that secure the left rear heat sink to the rail.
3.
Connect the 4-wire heat sink (bridge rectifier) cable to J8 on the Power Supply/RF
board.
4.
Tighten the screw securing the component clip over the Triac Thermister.
5.
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).
6.
Position the cover above the chassis and slide it down. Install the five screws that
secure the cover to the chassis.
RED
BLACK BLUE
BROWN
7 5 3 1
Bridge Rectifier
HVPS FETs (4)
HVPS Primary
Damping Resistor