Covidien Force FX, Service Manual

Page: 176 / 246

Correcting T_ON ASIC Malfunctions
6-22
Force FX Electrosurgical Generator C Service Manual
Correcting T_ON ASIC Malfunctions
Equipment required
• Phillips screwdriver
• Surface mount, quad pack chip extractor
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.
3.
Remove the Control board.
a.
Unlock the connector on the Control board and disconnect the Display board
ribbon cable from the Control board.
b.
Carefully slide the Control board straight up through the slots in the heat sinks to
disconnect it from the Power Supply/RF board.
4.
Replace the Control board.
a.
Turn off the generator. Disconnect the power cord from the wall receptacle.
b.
Remove the Control board (refer to step 3 on page 6-22).
c.
Install the new Control board. Position the Control board over the Power Supply/
RF board with the components facing the rear panel. Fit the edges of the board
into the slots on the heat sinks. Slide the board down, carefully fitting the
connector into the matching connector on the Power Supply/RF board.
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.
Important
If you are responding to a specific alarm number, first calibrate the ECON factor as described in
Checking and Adjusting the ECON Factor
on page 5-38
.
If the alarm number reappears after
calibration, complete this procedure.