Correcting Battery-Backed Ram Malfunctions - Covidien Force FX Service Manual

Correcting Battery-Backed RAM Malfunctions

Correcting Battery-Backed RAM Malfunctions
Equipment required
• Phillips screwdriver
• Surface mount, quad pack chip extractor
Warning
Electric Shock Hazard To allow stored energy to dissipate after power is disconnected, wait at
least five minutes before replacing parts.
Electric Shock Hazard Do not touch any exposed wiring or conductive surfaces while the
generator is disassembled and energized. Never wear a grounding strap when working on an
energized generator.
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 battery. Calibration values are lost when the
battery is replaced. Refer to Calibrating the Generator on page 5-26, for instructions.
Turn off the generator. Disconnect the power cord from the wall receptacle.
1.
Remove the five screws that secure the cover to the chassis. Lift the cover off the
2.
chassis.
Remove the Control board.
3.
a.
b.
Important
All data stored in internal memory (refer to Internal Memory Audio Volume on page 3-4) is lost
when the battery is removed.
Replace the battery.
4.
a.
b.
c.
6-24
Unlock the connector on the Control board and disconnect the Display board
ribbon cable from the Control board.
Carefully slide the Control board straight up through the slots in the heat sinks to
disconnect it from the Power Supply/RF board.
Grasp the battery and slide it up and out of the socket.
Position the new 3 V button-cell battery above the socket so that the positive side
of the battery is facing out (visible).
Slide the new battery down into the socket.
Force FX Electrosurgical Generator C Service Manual