Left Rear Heat Sink And Component Replacement; Remove The Left Rear Heat Sink - Valleylab Force FX-8C Service Manual

Left Rear Heat Sink and Component Replacement

Force FX-8C Service Manual
Equipment required:
• Phillips screwdriver.
Warning
Electric Shock Hazard To allow stored energy to dissipate after power is
disconnected, wait at least five minutes before replacing parts.
Caution
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 in Section 5 for instructions.
Step 1 – Remove the Left Rear Heat Sink
Turn off the generator. Disconnect the power cord from the wall
A.
receptacle.
Remove the five screws that secure the cover to the chassis. Lift the
B.
cover off the chassis. Set the cover and screws aside for reinstallation.
Remove the three screws (one plastic and two metal) that secure the
C.
support bracket to the heat sinks. Save the screws and bracket for
reinstallation.
Disconnect the 4-wire heat sink (bridge rectifier) cable from the Power
D.
Supply/RF board.
Loosen but do not remove the screw securing the component clip
E.
below the bridge rectifier.
On the left side of the chassis, remove the two screws that secure the
F.
base of the left rear heat sink to the rail under the Power Supply/
RF board. Save the screws for reinstallation.
Lift the left rear heat sink to disconnect it from the Power Supply/
G.
RF board.
Left Rear Heat Sink and Component Replacement
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