Force 2 Technical Training

Valleylab Technical Service Training

Breaks and Lunch Hands-on Contact information

Valleylab Technical Service Training

Training Information• 1-800-255-8522 ext. 6800• [email protected]

Mark Donaldson• 303-530-6172• 800-255-VLAB ext. 6172• [email protected]

Force 2

Force 2

Controls, Indicators, and Receptacles

Technical Specifications Circuit Descriptions Schematic Overviews Testing and Calibration Troubleshooting

Force 2

Controls• Standby• Ready• Monopolar• Bipolar • Up/Down • Pure Cut, Blend 1,2,3

Force 2

Controls • Low Voltage

– Ready & Coag Down– “L” in Coag display

• Power Control (Handswitch Port) – Ready & Cut Down– Activate Power Control Handset – Increase or decrease power from handset

Force 2

Indicators• Standby, Ready, Mono & Bipolar • Cut Modes• RF Power

– Monopolar, Bipolar• Remote• REM

Force 2

Receptacles• Patient Return • Monopolar Handswitch/Accessory• Bipolar Active• Monopolar/ Bipolar Footswitch

F2 Output Specifications

Frequency • Cut - 510kHz • Blend 1 - 510kHz, 50% duty cycle,

31kHz repetition rate • Blend 2 - 510kHz, 37.5% duty cycle,

31kHz rep. rate

F2 Output Specs

Frequency

• Blend 3 - 510kHz, 25% duty cycle, 31kHz rep. rate

• Coag - 1 pulse every 31kHz• Bipolar - 510k

WaveformsLow voltage

50 WattsHigh voltage

50 Watts

Pure Cut and Bipolar Blend 1 Blend 2 Blend 3 Pure Coag

100% on 50% on50% off

40% on60% off

25% on75% off

6% on94% off

F2 Output Specs

Power in watts 15% of display

Loads-300 Monopolar, 100 Bipolar

F2 Output Specs

Maximum power- Watts• 300-Cut• 250-Blend1• 200-Blend 2• 150-Blend 3• 120-Coag, 99 LV Coag• 70-Bipolar

F2 Output Specs

Max.open Circuit - P to P Voltage• Cut 3500• Blend 1 3800• Blend 2 4000• Blend3 4000• Coag 7000• LV Coag 4000• Bipolar 1200

F2 REM

Frequency 140k ± 20k

Range• non-rem 24ohms• rem 5-135 ohms

Autoranging 40% increase

F2 Circuits

Interconnect Monopolar/display Interface Power Supply/RF Output

F2 Interconnect

F2 Display/Control S-28













F2 Monopolar Display/Control





Lights 7-segment displays and indicator lamps

Processes keyboard and keying inputs

Performs adaptive REM


Controls output power Energizes proper relays Develops RF waveforms

F2 Interface

F2 Interface

F2 Interface

F2 Interface

Isolated activation circuits for hand/footswitch

REM circuit Receptacle selection

F2 PSRF

F2 PSRF

F2 PWM

F2 PSRF

F2 PSRF

F2 PSRF

F2 PSRF

F2 PSRF

OEM Low Voltage supply +5,+12, and - 12Vdc

Off-Line DC-DC Switching converter 0-100Vdc

RF Output 8 output fet’s, Ton, Step up output transformer

F2 Testing

Output power• 300 Monopolar 100 Bipolar• +/- 15% or 5W of Display

RF Leakage 150 Rfma REM

• 135 ± 5 Calibration only required for minor

adjustments

Power vs. Impedance

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FORCE FX Macrobipolar #1 Bipolar Cut #2 Bipolar Cut

Pow

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in W

att

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Impedance/Resistance in Ohms

F2 Calibration

High Voltage Clamp• measured @ TP 11• 120 W Coag setting open circuit• Adjust R19 for 440V ± 15V peak

F2 Calibration

Output power • pages 6-5, 6-6• Do not adjust potentiometers fully

clockwise • Do not do step 8 unless you have the

correct loads.

F2 Calibration

REM• Alarms 135 +/- 5, 40% Increase

REM Adjustments• R11 140khz +/- 20khz TP 4• R15 trip 135 +/- 5 TP 3• R16 pulse width 100Hz+/- 10Hz TP

2• REM Alarm@135 ohms TP3 ~ 4.5VDC

F2 Troubleshooting

No output (any output jack)• Output FETs Q1-4, 6-9 • Power supply FETs (f1) open

– Q25-28, – cr21-24

No output (one output jack)• Relay K1,K2,or K3• Jackstrip board

F2 Troubleshooting

REM Alarm• Rem adapter assembly

Won’t activate• photo-isolators• Jacks

F2 Troubleshooting

Display won’t adjust• Keyboards

Does not turn on• power cord• Low voltage power supply• Ribbon cable

Documents

Force 2 Technical Training