Valleylab Force FX-8C, Service Manual

Page: 179 / 218

Power Entry Module Replacement
Replacement Procedures
Force FX-8C Service Manual 7-25
Power Entry Module Replacement
Equipment required:
• Phillips screwdriver.
Step 1 – Remove the Power Entry Module
A. Turn off the generator. Disconnect the power cord from the wall
receptacle.
B. Disconnect the power cord from the power entry module.
C. 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.
D. Disconnect the power entry module cable from J6 on the Power
Supply/RF board.
E. Remove the two screws that secure the power entry module to the rear
panel. Save the screws for reinstallation.
F. Slide the module out the rear panel until you can access the grounding
lug post inside the rear panel. Then, remove the nut and washer that
secure the ground wire ring terminal to the grounding lug. Save the
nut and washer for reinstallation.
G. Slide the ring terminal off the post and remove the power entry
module assembly from the unit.
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.