Valleylab Force FX-8C, Service Manual

Page: 157 / 218

Battery Replacement
Replacement Procedures
Force FX-8C Service Manual 7-3
Important
Battery Replacement
Equipment required:
• Phillips screwdriver.
All data stored in internal memory
(refer to Internal Memory in
Section 3) is lost when the battery is
removed.
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.
Locate the battery at the upper left corner of the Control board.
4.
Grasp the battery and slide it up and out of the socket.
5.
Install the new 3 V button-cell battery (CR2450 or equivalent).
a.
Position the battery above the socket so that the positive side of the
battery is facing out (visible).
b.
Slide the battery down into the socket until it is firmly seated.
6.
Position the cover above the chassis and slide it down. Install the five
screws that secure the cover to the chassis.
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 battery. Calibration values are lost
when the battery is replaced. Refer to Calibrating the Generator in Section 5 for
instructions.