Valleylab Force FX-8C User manual

Service Manual

Force FX ™ -8C Electrosurgical Generator

with Instant Response ™ Technology

Preface

This manual and the equipment it describes are for use only by qualiﬁed medical professionals trained in the particular technique and surgical procedure to be performed. It is intended as a guide for servicing the Valleylab Force FX™-8C Electrosurgical Generator only. Additional information about using the generator is available in the Force FX™-8C

Electrosurgical Generator User’s Guide .

Caution

Federal (USA) law restricts this device to sale by or on the order of a physician.

Equipment covered in this manual:

Valleylab Force FX™-8C Electrosurgical Generator with Instant Response™ Technology— 100–120 V ~ Nominal, 220–240 V ~ Nominal (auto selected)

The Force FX™-8C Electrosurgical Generator Service Manual consists of two parts—the text (part 1 of 2) and a Schematics Supplement (part 2 of 2) which contains the schematics.

Valleylab Part Number:

Effective Date:

Trademark Acknowledgments:

September 2000

945 103 068

Force GSU™ Argon System, PolyHesive™ Adhesive Conductor, REM™ Contact Quality Monitoring System, Force EZ™ Electrosurgical Generator, Force Argon™ II-20 System, Instant Response™ Technology, The EDGE™ Coated Electrode, ACCUVAC™ Smoke Evacuation Attachment, and CUSA™ or CUSA EXcel™ Ultrasonic Surgical Aspirator are trademarks of Valleylab.

Teﬂon is a registered trademark of E.I du Pont de Nemours and Company.

Patent Information:

Protected by U.S. Pat. Nos. 4,416,276; 4,416,277; 4,658,820; 5,599,344; and 5,628,745.

Manufactured by:

Valleylab, a division of Tyco Healthcare Group LP Boulder, Colorado 80301-3299 USA

Tyco Healthcare UK Ltd. Gosport, PO130AS, UK

For information call:

1-303-530-2300

Force FX-8C Service Manual

Conventions Used in this Guide

Warning

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Caution

Indicates a hazardous situation which, if not avoided, may result in minor or moderate injury.

Important

Indicates an operating tip or maintenance suggestion.

Notice

Indicates a hazard which may result in product damage.

Force FX-8C Service Manual

iii

Table of Contents

Preface

Conventions Used in this Guide

List of Figures

iii

Section 1. Introduction

General Description

List of Components

Service Personnel Safety

General Fire/Explosion Hazards Electric Shock Hazards Servicing Calibration Cleaning

1-2

1-3

1-4

1-5

1-6

Section 2. Controls, Indicators, and Receptacles

Front Panel

Bipolar Controls

Bipolar Instrument Receptacle

Monopolar Cut Controls

Monopolar Coag Controls

Monopolar Instrument Receptacles

REM Alarm Indicator

Rear Panel

Footswitch Receptacles

Monopolar Footswitch Receptacles Bipolar Footswitch Receptacle

Power Entry Module

Activation Tone Volume Control

Option Panel

2-2

2-3

2-4

2-5

2-6

2-7

2-8

2-9

2-10

2-11

Section 3. Technical Specifications

Performance Characteristics

General

3-1

Dimensions and Weight Operating Parameters Transport and Storage Duty Cycle

3-3

Internal Memory Audio Volume

3-3

3-1

3-2

3-3

Force FX-8C Service Manual

REM Contact Quality Monitor Serial Port RF Activation Port Expansion Port

3-5

Low Frequency (50–60 Hz) Leakage Current High Frequency (RF) Leakage Current Input Power

3-7

Standards and IEC Classifications

Class I Equipment (IEC 601-1)

3-4

3-6

3-8

Type CF Equipment (IEC 601-1)/Defibrillator Proof Drip Proof (IEC 601-2-2) Electromagnetic Interference

3-9

Electromagnetic Compatibility (IEC 601-1-2 and IEC 601-2-2) Voltage Transients (Emergency Generator Mains Transfer)

Output Characteristics

3-10

Maximum Output for Bipolar and Monopolar Modes Maximum Output for Ultrasonic Electrosurgery Available Power Settings in Watts Output Waveforms

3-12

Output Power vs. Resistance Graphs

Bipolar Graphs Monopolar Cut Graphs Monopolar Coag Graphs

3-14

3-17

3-20

3-11

3-14

3-10

3-8

3-9

3-10

Section 4. Principles of Operation

Block Diagram

Functional Overview

Instant Response Technology Ultrasonic Electrosurgery Simultaneous Coag REM Contact Quality Monitoring System

Control Board

Microcontrollers Main Microcontroller Feedback Microcontroller Shared RAM I/0 Expansion Keyboard Interface and Activation Inputs Power Supply Supervisor Circuit A/D and D/A Conversion Waveform Generation (T_ON ASIC) T_ON Average Check Audio Alarm

4-2

4-3

4-5

4-6

4-7

4-8

4-9

4-4

4-7

4-8

Force FX-8C Service Manual

Serial Interface Dosage Error Algorithm Instant Response Algorithm

Front Panel

4-12

Membrane Keyboard Power Switch REM Connector/Switch CEM Mechanism Switch

Display Board

RF Indicator Lamps REM Indicators

4-9

4-10

4-11

4-12

4-13

LED and Seven-Segment Display Drivers CEM Switch Circuit

4-14

Mode Selection and Power Control Switches

Footswitch Board

Footswitch Decode Circuit Audio Circuit

Power Supply/RF Board

4-15

4-16

4-17

Power Supply/RF Board Interfaces High Voltage Power Supply 4-18 Low Voltage Power Supply 4-21 RF Output Stage 4-21 Spark Control Circuit 4-24 RF Leakage Reduction Circuit 4-25 REM Circuit 4-25 IsoBloc Circuit 4-25 Temperature Sense Circuits 4-26

4-13

4-14

4-18

Section 5. Setup, Tests, and Adjustments

Setting Up the Generator 5-2

Connections for Bipolar or Macrobipolar Surgery 5-4 Setting the Bipolar Output 5-5 Connections for Monopolar Surgery 5-6 Selecting Cut and Coag Modes 5-8 Simultaneous Coag 5-8 Using Two Generators Simultaneously 5-9 Connecting the CUSA Handpiece with CEM Nosecone 5-10 Setting the Output Power 5-11 Simultaneous Coag with a CUSA System 5-11 Changing the Mode 5-11 Changing the Power Setting 5-11 Activating the Surgical Instrument 5-12

Force FX-8C Service Manual

Periodic Safety Check 5-13

Recommended Test Equipment 5-13 Inspecting the Generator and Accessories 5-14 Inspecting the Internal Components 5-15 Testing the Generator 5-16 Verifying REM Function 5-17 Confirming Outputs 5-17 Check the Output for the Cut Modes 5-19 Check the Output for the Coag Modes 5-20 Checking Low Frequency Leakage Current and Ground Resistance 5-21 Checking High Frequency Leakage Current 5-23

Calibrating the Generator 5-24

Preparing for Calibration 5-25 Entering Calibration Mode 5-25 Exiting Calibration Mode 5-26 Verify the Generator Data 5-26 Adjust the Calendar 5-27 Adjust the Clock 5-28 Check and Adjust the REM Oscillator Frequency and Impedance 5-29 Check and Adjust the Current Sense Gain 5-30 Check and Adjust the Voltage Sense Gain 5-32 Check and Adjust the Reactance Gain 5-34 Check and Adjust the ECON Factor 5-36

Using the RS-232 Serial Port 5-40

Establish the Communications Link 5-40 Enter the Commands 5-41 Disconnect the Computer from the Generator 5-44

Section 6. Troubleshooting

Inspecting the Generator 6-1

Inspecting the Receptacles 6-2 Inspecting the Internal Components 6-3

Correcting Malfunctions 6-4

Responding to System Alarms 6-10

Correcting IC U3 Malfunctions 6-19

Correcting IC U6 Malfunctions 6-21

Correcting T_ON ASIC Malfunctions 6-23

Correcting Battery-Backed RAM Malfunctions 6-25

Section 7. Replacement Procedures

Interconnect Diagram 7-2

Battery Replacement 7-3

Force FX-8C Service Manual vii

Control Board Replacement 7-4

Display Board Replacement 7-5

Remove the Display Board 7-5 Install the Display Board 7-6

Display Board Seven-Segment LED Replacement 7-7

Fan Replacement 7-8

Footswitch Board Replacement 7-8

Front Panel Replacement 7-9

Remove the Front Panel Assembly 7-9 Remove and Reinstall the Front Panel Components 7-9 Install the Front Panel Assembly 7-10

Front Panel REM Module Replacement 7-11

Front Panel Power Switch Replacement 7-12

Fuse Replacement 7-13

Replacing Fuses in the Fuse Drawer 7-13 Replacing the Fuse on the Power Supply/RF Board 7-14

Left Front Heat Sink and Component Replacement 7-15

Remove the Left Front Heat Sink 7-15 Replace Left Front Heat Sink Components 7-16 Install the Left Front Heat Sink 7-16

Left Rear Heat Sink and Component Replacement 7-17

Remove the Left Rear Heat Sink 7-17 Replace Left Rear Heat Sink Components 7-18 Install the Left Rear Heat Sink 7-19

Right Heat Sink and Component Replacement 7-20

Remove the Right Heat Sink 7-20 Replace Right Heat Sink Components 7-21 Install the Right Heat Sink 7-22

Low Voltage Power Supply Replacement 7-23

Remove the Low Voltage Power Supply 7-23 Install the Low Voltage Power Supply 7-24

Power Entry Module Replacement 7-25

Remove the Power Entry Module 7-25 Install the Power Entry Module 7-26

Power Supply/RF Board Replacement 7-27

Remove the Power Supply/RF Board Assembly 7-27 Remove Components from the Old Board 7-28 Install Components on the New Board 7-29 Install the Power Supply/RF Board Assembly 7-30

viii Force FX-8C Service Manual

Section 8. Repair Policy and Procedures

Responsibility of the Manufacturer 8-1

Returning the Generator for Service 8-2

Obtain a Return Authorization Number 8-2 Clean the Generator 8-2 Ship the Generator 8-3

Returning Circuit Boards 8-3

Service Centers 8-4

Section 9. Service Parts

Ordering Replacement Parts 9-1

Generator Assembly 9-2

Parts List 9-4

Front Panel Assembly 9-6

Parts List 9-8

Control Board Components 9-9

Display Board Components 9-10

Footswitch Board Components 9-11

Power Supply/RF Board Assembly 9-14

Parts List 9-16

Power Supply/RF Board Components 9-18

Appendix A. Warranty

Schematics Supplement. Board Drawings and Schematics

Force FX-8C Service Manual ix

List of Figures

Figure 2-1. Layout of controls and indicators on the front panel 2-2

Figure 2-2. Buttons and indicators for bipolar controls 2-3

Figure 2-3. Buttons and indicators for cut controls (monopolar) 2-5

Figure 2-4. Buttons and indicators for coag controls (monopolar) 2-6

Figure 2-5. Controls and receptacles on the rear panel 2-8

Figure 2-6. Components in the power entry module 2-10

Figure 2-7. The three ports behind the option panel 2-11

Figure 3-1. Output power versus impedance for Precise bipolar mode 3-14

Figure 3-2. Precise bipolar mode—output power vs. peak voltage 3-14

Figure 3-3. Output power versus impedance for Standard bipolar mode 3-15

Figure 3-4. Standard bipolar mode—output power vs. peak voltage 3-15

Figure 3-5. Output power versus impedance for Macrobipolar mode 3-16

Figure 3-6. Macrobipolar mode—output power vs. peak voltage 3-16

Figure 3-7. Output power versus impedance for Low cut mode 3-17

Figure 3-8. Low cut mode—output power vs. peak voltage 3-17

Figure 3-9. Output power versus impedance for Pure cut mode 3-18

Figure 3-10. Pure cut mode—output power vs. peak voltage 3-18

Figure 3-11. Output power versus impedance for Blend cut mode 3-19

Figure 3-12. Blend cut mode—output power vs. peak voltage 3-19

Figure 3-13. Output power versus impedance for Desiccate 1 coag mode 3-20

Figure 3-14. Desiccate 1 coag mode—output power vs. peak voltage 3-20

Figure 3-15. Desiccate 2 coag mode—load resistance vs. output power 3-21

Figure 3-16. Desiccate 2 coag mode—output power vs. peak voltage 3-21

Figure 3-17. Desiccate 3 coag mode—load resistance vs. output power 3-22

Figure 3-18. Desiccate 3 coag mode—output power vs. peak voltage 3-22

Figure 3-19. Output power versus impedance for Fulgurate coag mode 3-23

Figure 3-20. Fulgurate coag mode—output power vs. peak voltage 3-23

Figure 3-21. Output power versus impedance for LCF Fulgurate mode 3-24

Figure 3-22. LCF Fulgurate mode—output power vs. peak voltage 3-24

Figure 3-23. Output power versus impedance for Spray coag mode 3-25

Figure 3-24. Spray coag mode—output power vs. peak voltage 3-25

x Force FX-8C Service Manual

Figure 5-1. Bipolar or macrobipolar connections—footswitch activation and a

handswitching or footswitching instrument 5-4

Figure 5-2. Bipolar or macrobipolar connection—handswitching

instrument 5-5

Figure 5-3. Monopolar connection—footswitch activation and a footswitching or

handswitching instrument using Monopolar 1 Footswitch receptacle and Monopolar 1/CEM Instrument receptacle 5-6

Figure 5-4. Monopolar connection—footswitch activation and a footswitching or

handswitching instrument using Monopolar 2 Footswitch receptacle and Monopolar 2 Instrument receptacle 5-7

Figure 5-5. Monopolar connection—handswitch activation and a monopolar

handswitching instrument using either Monopolar Instrument receptacle

Figure 5-6. Connections for simultaneous coag—two handswitching

instruments 5-9

Figure 5-7. Connection for simultaneous coag—two footswitching

instruments 5-9

Figure 5-8. Connections for combined monopolar/ultrasonic surgery 5-10

Figure 5-9. Leakage current test circuit per IEC 60601-1 5-21

5-7

Figure 7-1. Removing and disconnecting the power switch 7-12

Figure 7-2. Replacing fuses in the fuse drawer 7-13

Figure 7-3. Replacing left front heat sink components 7-16

Figure 7-4. Components of the left rear heat sink 7-18

Figure 7-5. Components of the right heat sink 7-21

Figure 7-6. Low voltage power supply 7-24

Figure 7-7. Cable connections on the power entry module 7-26

Figure 9-1. Generator assembly 9-2

Figure 9-2. Generator assembly – continued 9-3

Figure 9-3. Front panel assembly 9-6

Figure 9-4. Front panel assembly – continued 9-7

Figure 9-5. Power Supply/RF board assembly 9-14

Figure 9-6. Power Supply/RF board assembly – continued 9-15

Schematics Supplement

Schematic 1. Control board layout S-1

Schematic 2. Control board schematic, page 1 of 3 S-2 Schematic 3. Control board schematic, page 2 of 3 S-3

Schematic 4. Control board schematic, page 3 of 3 S-4 Schematic 5. Display board layout S-5

Force FX-8C Service Manual xi

Schematic 6. Display board schematic, page 1 of 3 S-6 Schematic 7. Display board schematic, page 2 of 3 S-7

Schematic 8. Display board schematic, page 3 of 3 S-8 Schematic 9. Footswitch board layout S-9

Schematic 10. Footswitch board schematic, page 1 of 2 S-10 Schematic 11. Footswitch board schematic, page 2 of 2 S-11

Schematic 12. Power supply/RF board layout S-12

Schematic 13. Power supply/RF board schematic, page 1 of 7 S-13

Schematic 14. Power supply/RF board schematic, page 2 of 7 S-14

Schematic 15. Power supply/RF board schematic, page 3 of 7 S-15

Schematic 16. Power supply/RF board schematic, page 4 of 7 S-16

Schematic 17. Power supply/RF board schematic, page 5 of 7 S-17

Schematic 18. Power supply/RF board schematic, page 6 of 7 S-18

Schematic 19. Power supply/RF board schematic, page 7 of 7 S-19

xii Force FX-8C Service Manual

1Introduction

SECTION

This manual provides instructions for servicing the Valleylab Force FX-8C Electrosurgical Generator with Instant Response Technology. This section

introduces the features and components of the generator and reviews the precautions associated with generator repair.

Force FX-8C Service Manual 1-1

General Description

The Valleylab Force FX-8C is an isolated output electrosurgical generator that provides the appropriate power for cutting, desiccating, and fulgurating tissue during bipolar and monopolar surgery.

It includes the following features:

• Instant Response Technology

• Three bipolar modes: precise (low), standard (medium), and macro (macrobipolar)

• Three monopolar cut modes: low, pure, and blend

• Three monopolar coag modes: desiccate (low), fulgurate (medium), and spray (high)

• Support for simultaneous coagulation

• The Valleylab REM Contact Quality Monitoring System

• Support for ultrasonic electrosurgery using the Valleylab CUSA System 200 or CUSA EXcel system and a CUSA handpiece with a CUSA electrosurgical module (CEM) nosecone

• Handswitch or footswitch activation

• Recall of most recently used mode and power settings

• Adjustable activation tone volume

• An RF activation port, RS-232 serial port, and expansion port

• Force GSU system and Force Argon system compatibility.

1-2 Force FX-8C Service Manual

List of Components

The Force FX-8C generator is a self-contained unit, consisting of a main enclosure (cover and base) and power cord. The main components of the generator are the following:

• Front panel components—power switch; controls for setting the modes and output power; a button for recalling the power settings and modes that were used last; receptacles for connecting electrosurgical accessories; and indicators that alert you to the current settings and patient return electrode status.

• Rear panel components—volume control; three footswitch receptacles; power entry module; equipotential grounding lug; and three ports (serial port, RF activation port, and expansion port).

• Internal components—control (microcontroller) board; display board; footswitch board; power supply/radio frequency (RF) board; low voltage power supply; fan; and heat sinks.

A handle is located on the underside of the chassis. For details about the interaction of the main components and circuit board

descriptions, refer to Section 4, Principles of Operation.

Introduction

Service Personnel Safety

Before servicing the generator, it is important that you read, understand, and follow the instructions supplied with it and with any other equipment used to install, test, adjust, or repair the generator.

General

Use the generator only if the self-test has been completed as described. Otherwise, inaccurate power outputs may result.

The instrument receptacles on this generator are designed to accept only one instrument at a time. Do not attempt to connect more than one instrument at a time into a given receptacle. Doing so will cause simultaneous activation of the instruments.

Do not stack equipment on top of the generator or place the generator on top of electrical equipment (except a Force GSU unit, a Force Argon unit, a CUSA System 200, or a CUSA EXcel unit). These conﬁgurations are unstable and/or do not allow for adequate cooling.

Provide as much distance as possible between the electrosurgical generator and other electronic equipment (such as monitors). An activated electrosurgical generator may cause interference with them.

Warning

Caution

Force FX-8C Service Manual 1-3

Service Personnel Safety

Caution

Do not turn the activation tone down to an inaudible level. The activation tone alerts the surgical team when an accessory is active.

Notice

If required by local codes, connect the generator to the hospital equalization connector with an equipotential cable.

Connect the power cord to a wall receptacle having the correct voltage. Otherwise, product damage may result.

Active Accessories

Warning

Electric Shock Hazard Do not connect wet accessories to the generator.

Electric Shock Hazard Ensure that all accessories and adapters are correctly

connected and that no metal is exposed.

Caution

Accessories must be connected to the proper receptacle type. In particular, bipolar accessories must be connected to the Bipolar Instrument receptacle only. Improper connection may result in inadvertent generator activation or a REM Contact Quality Monitor alarm.

Set power levels to the lowest setting before testing an accessory.

Notice

During bipolar electrosurgery do not activate the generator until the forceps have made contact with the patient. Product damage may occur.

Patient Return Electrodes

Warning

Using a patient return electrode without the REM safety feature will not activate the Valleylab REM Contact Quality Monitoring System.

Fire/Explosion Hazards

Warning

Danger: Explosion Hazard Do not install the generator in the presence of ﬂammable anesthetics, gases, liquids, or objects.

Fire Hazard Do not place active accessories near or in contact with ﬂammable materials (such as gauze or surgical drapes). Electrosurgical accessories that are activated or hot from use can cause a ﬁre. Use a holster to hold electrosurgical accessories safely away from personnel and ﬂammable materials.

Fire Hazard Do not use extension cords.

1-4 Force FX-8C Service Manual

Service Personnel Safety

Warning

Fire Hazard For continued protection against ﬁre hazard, replace fuses only with fuses of the same type and rating as the original fuse.

Electric Shock Hazards

Warning

Connect the generator power cord to a properly grounded receptacle. Do not use power plug adapters.

Do not connect a wet power cord to the generator or to the wall receptacle.

To allow stored energy to dissipate after power is disconnected, wait at least ﬁve minutes before replacing parts.

Always turn off and unplug the generator before cleaning.

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.

Introduction

When taking measurements or troubleshooting the generator, take appropriate precautions, such as using isolated tools and equipment, using the “one hand rule,” etc.

Potentially lethal AC and DC voltages are present in the AC line circuitry, high voltage DC circuitry, and associated mounting and heat sink hardware described in this manual. They are not isolated from the AC line. Take appropriate precautions when testing and troubleshooting this area of the generator.

High frequency, high voltage signals that can cause severe burns are present in the RF output stage and in the associated mounting and heat sink hardware described in this manual. Take appropriate precautions when testing and troubleshooting this area of the generator.

Servicing

Caution

Read all warnings, cautions, and instructions provided with this generator before servicing.

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

After installing a new low voltage power supply, verify that the voltages are correct.

Force FX-8C Service Manual 1-5

Service Personnel Safety

Calibration

Caution

To avoid inadvertent coupling and/or shunting of RF currents around the resistor elements, keep the resistors at least 10.2 cm (4 in.) away from any metal surface including tabletops and other resistors. This is especially true if several resistors are connected in series or parallel to obtain a speciﬁed value. Do not allow the resistor bodies to touch each other.

Notice

After completing any calibration step, proceed to the next step to save the values from the completed calibration step.

Do not activate the generator with any load resistor higher than 10 ohms while calibrating the current sense gain. Otherwise, product damage will result.

Do not activate the generator with any load resistor lower than 1000 ohms while calibrating the voltage sense gain for bipolar output. Otherwise, product damage will result.

Do not activate the generator with any load resistor lower than 3000 ohms while calibrating the voltage sense gain for the Low and Pure cut modes. Do not activate the generator with any load resistor lower than 2000 ohms while calibrating the voltage sense gain for the Blend mode. Otherwise, product damage will result.

Do not adjust the current sense gain (I factor), the voltage sense gain (V factor), or the reactance (Z factor) gain while the generator is activated.

After calibration, the generator will be ready to use only after you initiate the internal self-test by turning the generator off, then on.

Calibrate the generator after you install a new battery. Calibration values are lost when the battery is replaced.

Calibrate the generator after you install a new control board. Otherwise, the default calibration values are used.

Calibrate the generator after you install a new heat sink or replace components on the heat sink. Component differences may affect output waveforms.

Calibrate the generator after you install a new power supply/RF board. Component differences may affect output waveforms.

Cleaning

Notice

Do not clean the generator with abrasive cleaning or disinfectant compounds, solvents, or other materials that could scratch the panels or damage the generator.

1-6 Force FX-8C Service Manual

SECTION

2Controls, Indicators, and Receptacles

This section describes the front and rear panels, including all controls, indicators, receptacles, the fuse drawer, and ports.

Force FX-8C Service Manual 2-1

Front Panel

Recall button

Pressing this button sets the generator to the most recently used mode and power settings.

Bipolar controls Cut controls Coag controls

CEM indicator

Bipolar instrument receptacle

Monopolar 1/CEM instrument receptacle

Monopolar 2 instrument receptacle

Power switch

This switch supplies power to the generator.

Patient return electrode receptacle

For monopolar electrosurgery, connect a patient return electrode to this receptacle.

To turn on the generator, press (|). To turn off the generator, press (

O).

REM alarm indicator

Front Panel

Figure 2-1.

Layout of controls and indicators on the front panel

2-2 Force FX-8C Service Manual

Bipolar Controls

Figure 2-2.

Buttons and indicators for bipolar controls

Bipolar display

Shows the power setting, in watts, for the selected mode.

Mode indicators

Illuminate green when you press the corresponding mode button.

Bipolar indicator

When you activate bipolar, this indicator illuminates blue and an activation tone sounds.

Power buttons

Press

∆ to increase the power. ∇ to decrease the power.

Press

Controls, Indicators,

and Receptacles

Precise mode button

Select for ﬁne bipolar tissue desiccation.

Macro mode button

Select for macrobipolar output.

Standard mode button

Select for standard bipolar tissue desiccation. This is the default bipolar mode.

Force FX-8C Service Manual 2-3

Bipolar Instrument Receptacle

Caution

You can connect either a footswitching or handswitching bipolar instrument to the Bipolar instrument receptacle.

Connect a footswitching instrument with a two-pin connector.

Connect a handswitching instrument with a three-pin connector.

2-4 Force FX-8C Service Manual

Monopolar Cut Controls

Figure 2-3.

Buttons and indicators for cut controls (monopolar)

Cut display

Shows the power setting, in watts, for the selected mode.

Monopolar Cut Controls

Cut indicator

When you activate cut, this indicator illuminates yellow and an activation tone sounds.

Mode indicators

Illuminate green when you press the corresponding mode button.

Low mode button

Select for a cut with little or no sparking.

Power buttons

Press

∆ to increase the power.

Press

∇ to decrease the power.

Blend mode button

Select for slower cutting and additional hemostasis.

Pure mode button

Select for an even cut with little or no hemostasis. This is the default monopolar cut mode.

Controls, Indicators,

and Receptacles

Force FX-8C Service Manual 2-5

Monopolar Coag Controls

Figure 2-4.

Buttons and indicators for coag controls (monopolar)

Coag display

Shows the power setting, in watts, for the selected mode.

Mode indicators

Illuminate green when you press the corresponding mode button.

Coag indicator

When you activate coag, this indicator illuminates blue and an activation tone sounds.

Power buttons

Press Press

∆ to increase the power. ∇ to decrease the power.

Desiccate mode button

Select to desiccate the area of tissue that is in direct contact with the active electrode.

Spray mode button

Select to evenly coagulate a wide area of tissue with a spray of sparks; penetration is shallower and tissue area is larger than in fulgurate mode.

Fulgurate mode button

Select to fulgurate an area of tissue with a spray of sparks.

This unit is equipped with an additional fulgurate mode which incorporates a lower crest factor (LCF) than the factory default fulgurate mode. For details about this additional fulgurate mode, LCF Fulgurate, refer to Section 4, Before

Surgery, in the Force FX-8C Electrosurgical Generator User’s Guide.

Fulgurate is the default monopolar coag mode. However, the default coag mode can be changed to either Desiccate or Spray through the serial port on the rear panel.

2-6 Force FX-8C Service Manual

Monopolar Instrument Receptacles

Warning

You can connect a footswitching or handswitching monopolar instrument to the monopolar receptacles. Some footswitching instruments may require a single-pin adapter (E0502 Series) or E0017, available from Valleylab.

Connect one monopolar instrument to the Monopolar 1/CEM Instrument receptacle:

Monopolar Instrument Receptacles

REM Alarm Indicator

• A single-pin footswitching instrument or a three-pin handswitching instrument

• A four-pin CUSA handpiece with CEM nosecone. (The CEM indicator in the upper right of the front panel illuminates green. Refer to Section 4, Connecting the CUSA Handpiece with CEM Nosecone, in the Force FX-8C Electrosurgical Generator User’s Guide.

Connect one monopolar instrument to the Monopolar 2 Instrument receptacle:

• A single-pin footswitching instrument or a three-pin handswitching instrument

This indicator illuminates red until you properly apply a REM patient return electrode to the patient and connect it to the generator. Then the indicator illuminates green. (When you connect an electrode without the REM safety feature, the indicator does not illuminate.)

If the REM system senses an alarm condition, the indicator ﬂashes red until you correct the alarm condition—then the indicator illuminates green. (If you are using a return electrode without the REM safety feature, the red indicator light is extinguished when you correct the alarm condition.)

Controls, Indicators,

and Receptacles

Force FX-8C Service Manual 2-7

Rear Panel

Volume control

Power entry module

Monopolar Footswitch receptacles

Option panel Bipolar Footswitch

receptacle

Equipotential grounding lug

Use to connect the generator to earth ground.

Rear Panel

Figure 2-5.

Controls and receptacles on the rear panel

2-8 Force FX-8C Service Manual

Footswitch Receptacles

The rear panel contains three footswitch receptacles: two for monopolar and one for bipolar.

Monopolar Footswitch Receptacles

You must connect a monopolar footswitch if you connect a monopolar footswitching instrument to the generator.

Footswitch Receptacles

Connect a two-pedal monopolar footswitch to the Monopolar 1 Footswitch receptacle.

The connected footswitch activates monopolar output for the instrument that is connected to the Monopolar 1/CEM Instrument receptacle on the front panel.

Connect a two-pedal monopolar footswitch to the Monopolar 2 Footswitch receptacle.

The connected footswitch activates monopolar output for the instrument that is connected to the Monopolar 2 Instrument receptacle on the front panel

Controls, Indicators,

and Receptacles

Bipolar Footswitch Receptacle

You must connect a bipolar footswitch if you connect a bipolar footswitching instrument to the generator.

Connect a single-pedal bipolar footswitch to the Bipolar Footswitch receptacle.

The connected footswitch activates bipolar output for the instrument that is connected to the Bipolar Instrument receptacle on the front panel.

Force FX-8C Service Manual 2-9

Power Entry Module

The power entry module consists of a power cord receptacle and a fuse drawer.

Figure 2-6.

Components in the power entry module

Activation Tone Volume Control

Fuse drawer

The fuse drawer contains two fuses. Refer to the Force FX-8C Electrosurgical Generator Service Manual for instructions on changing the fuses.

Power cord receptacle

Turn to adjust the volume of the tones that sound when the generator is activated (activation tone). To ensure that the surgical team is alerted to inadvertent activation, these tones cannot be silenced.

To increase the volume of activation tones, turn the knob clockwise. To decrease the volume, turn the knob counterclockwise.

2-10 Force FX-8C Service Manual

Option Panel

A removable plate on the rear panel covers a serial port, an expansion port, and an RF (radio frequency) activation port. Remove this plate to obtain information through the RS-232 port or to install a peripheral device such as a Bipolar Current Monitor, but retain the original cover plate. After obtaining information or removing a peripheral device, reinstall the original cover plate.

Caution

To avoid product damage, do not operate the Force FX-8C without an appropriate cover plate in place.

To review the technical speciﬁcations for each port, refer to Section 3, Technical Speciﬁcations.

Figure 2-7.

The three ports behind the option panel

Serial port

Allows connection of a computer to the generator. You can obtain information about the generator using RS-232 communications protocol or change the default coag mode from Fulgurate to Desiccate or Spray. Refer to Section 5, Using the RS-232 Serial Port, for instructions.

Controls, Indicators,

and Receptacles

Expansion port

Allows a connected device to receive information about the RF voltage and current being generated as well as signal the generator to halt RF output.

RF Activation port

Allows a connected device to receive information during RF activation of the generator, which will then generate a response in the device.

Force FX-8C Service Manual 2-11

Notes

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+ 188 hidden pages