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. On the Control board, verify that the pins on programmable IC U9 are properly seated
in their socket on the Control board.
a. Grip IC U9 with the chip extractor and lift it out of its socket.
b. Align the notch on IC U9 above the notch on the socket and gently press the chip
back into the socket.
5. Install the Control board.
Warning
Electric Shock Hazard To all ow stored en e rg y t o diss ipat e 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.
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.
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.
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