Covidien Force FX, Service Manual

Page: 197 / 246

Left Rear Heat Sink and Component Replacement
Replacement Pr
ocedur
es
Force FX Electrosurgical Generator C Service Manual
7-17
Left Rear Heat Sink and Component Replacement
Equipment required
• Phillips screwdriver
Remove the Left Rear Heat Sink
1.
Turn off the generator. Disconnect the power cord from the wall receptacle.
2.
Remove the five screws that secure the cover to the chassis. Lift the cover off the
chassis. Set the cover and screws aside for reinstallation.
3.
Remove the three screws (one plastic and two metal) that secure the support bracket
to the heat sinks. Save the screws and bracket for reinstallation.
4.
Disconnect the 4-wire heat sink (bridge rectifier) cable from the Power Supply/RF
board.
5.
Loosen but do not remove the screw securing the component clip below the bridge
rectifier.
6.
On the left side of the chassis, remove the two screws that secure the base of the left
rear heat sink to the rail under the Power Supply/RF board. Save the screws for
reinstallation.
7.
Lift the left rear heat sink to disconnect it from the Power Supply/RF board.
If you plan to replace one or more components on the existing heat sink, go to
Replace
Left Rear Heat Sink Components
on page 7-18
.
or
If you plan to replace the entire left rear heat sink assembly, go to
Install the Left Rear Heat Sink
on page 7-18
.
Warning
Electric Shock Hazard
To allow stored energy to dissipate after power is disconnected, wait at
least five minutes before replacing parts.
Precaution
The generator contains electrostatic-sensitive components. When repairing the generator, work at
a static-control workstation. Wear a grounding strap when handling electrostatic-sensitive
components, except when working on an energized generator. Handle circuit boards by their
nonconductive edges. Use an antistatic container for transport of electrostatic-sensitive
components and circuit boards.
Notice
Calibrate the generator after you install a new heat sink or replace components on the heat sink.
Component differences may affect output waveforms. Refer to
Calibrating the Generator
on
page 5-26
,
for instructions
.