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Valleylab LigaSure Service Manual Download Page 98

CHAPTER 

7

LigaSure Vessel Sealing Generator Service Manual

7

-

1

If the generator is not functioning properly, use the information in 
this chapter to troubleshoot the system:

• Inspect the generator, connectors and cords, and internal 

components.

• Identify and correct a malfunction.

• If the system displays an alarm number, take the appropriate 

action to correct the alarm condition.

1

Troubleshooting

Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Summary of Contents for LigaSure

Page 1: ...service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE IN...

Page 2: ...Service Manual LigaSure Vessel Sealing Generator Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 3: ...are trademarks of Valleylab Boulder CO Patents One or more of the following U S patents and corresponding foreign patents cover the LigaSure vessel sealing generator and accessories Additional patents...

Page 4: ...ions on how to replace specific components Parts lists and schematics Conventions Used in this Guide Warning Indicates a potentially hazardous situation which if not avoided could result in death or s...

Page 5: ...iv LigaSure Vessel Sealing Generator Service Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 6: ...Components 3 2 Front Panel 3 3 Features 3 4 Symbols 3 4 Vessel Sealing Controls and Indicators 3 5 Vessel Sealing Handset Receptacle purple 3 6 Bipolar Controls and Indicators 3 6 Bipolar Handset Rec...

Page 7: ...erator Output 4 14 Output Waveform 4 15 Output Power vs Impedance Graphs 4 17 Chapter 5 Principles of Operation Block Diagram 5 2 Functional Overview 5 3 Vessel Sealing 5 3 Bipolar Operation 5 3 Insta...

Page 8: ...ircuit 5 24 Heat Sink 5 25 IsoBloc Circuit 5 25 Integration Functions 5 26 Smart Connector Boards 5 28 Chapter 6 Setup Tests and Adjustments Setting Up the Generator 6 2 Connecting Bipolar or Macrobip...

Page 9: ...ls Needed 8 5 Remove the High Voltage Power Supply Board 8 5 Install a New HV Power Supply Board 8 7 Control Board and Battery 8 9 Tools Needed 8 9 Remove the Control Board 8 9 Replacing the Battery 8...

Page 10: ...e Drawer 8 32 Three Fuses on the RF Board 8 33 One Fuse on the HV Power Supply Board 8 33 Chapter 9 Repair Policy Responsibility of the Manufacturer 9 2 Returning the Generator for Service 9 2 Returni...

Page 11: ...x LigaSure Vessel Sealing Generator Service Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 12: ...servicing of its electrosurgical equipment This chapter presents the following Safety information Warnings Cautions and Notices Refer to the Preface Conventions Used In This Guide for further informa...

Page 13: ...nterface They operate with Valleylab LigaSure handsets or smart connector adapters exhibiting smart codes Caution Do not stack equipment on top of the generator or place the generator on top of electr...

Page 14: ...h 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 fro...

Page 15: ...an cause severe burns are present in the RF output stage described in this manual Take appropriate precautions when testing and troubleshooting this area of the generator Caution Read all warnings cau...

Page 16: ...r Notice 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 batter...

Page 17: ...1 6 LigaSure Vessel Sealing Generator Service Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 18: ...vice Manual 2 1 2Introduction This chapter introduces the system features General description Vessel sealing Bipolar operation Instant Response technology Artisan Technology Group Quality Instrumentat...

Page 19: ...tings Smart interface for connecting a Valleylab LigaSure handset or smart connector adapter Adjustable volume for the activation tone Handswitch or footswitch activation RF activation port RS 232 ser...

Page 20: ...ing or rapid coagulation The system provides higher voltage and greater power than with the bipolar mode Instant Response Technology The LigaSure generator automatically senses tissue impedance and ad...

Page 21: ...2 4 LigaSure Vessel Sealing Generator Service Manual Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Page 22: ...hapter describes the front and rear panels including all controls indicators and receptacles It also describes the fuse drawer and all ports 1Controls Indicators and Receptacles Artisan Technology Gro...

Page 23: ...ol settings and smart indicators for correct Valleylab LigaSure handset and bipolar adapter use Rear panel volume control two footswitch receptacles option panel containing RF activation port RS 232 s...

Page 24: ...tional front panels Domestic Vessel Sealing Controls and Indicators page 3 4 Bipolar Controls and Indicators page 3 6 A B C D E F D G International Vessel Sealing Controls and Indicators page 3 4 Bipo...

Page 25: ...olar receptacle smart indicator F Bipolar handset receptacle G Memory button Pressing this button resets the generator to recall the most recently used intensity and power settings For details of the...

Page 26: ...aling Intensity Display A bar graph indicates the relative seal intensity setting Vessel Sealing Intensity Buttons Press to increase the intensity Press to decrease the intensity Regrasp Indicator Ill...

Page 27: ...Controls and Indicators Figure 3 4 Bipolar controls and indicators Bipolar RF Activation Lamp These lamps illuminate with handswitch or footswitch activation Macrobipolar RF Activation Lamp These lamp...

Page 28: ...nnector or Connect a handswitching instrument with a three pin connector This receptacle is designed to accept a Valleylab Smart Connector or a Valleylab Smart Connector adapter If the bipolar instrum...

Page 29: ...ns a fuse drawer with two fuses and a receptacle for connecting the generator power cord Grounding Lug Use this to connect the generator to earth ground Option Panel Volume Knob To increase the volume...

Page 30: ...t panel Single Pedal Footswitch The connected footswitch activates only the vessel sealing output for the LigaSure instrument that is connected to the Vessel Sealing Handset receptacle on the front pa...

Page 31: ...igure 3 9 The option panel Expansion Port Allows a connected device to receive information about RF output from the generator RF Activation Port Allows a connected device to receive information during...

Page 32: ...l specifications are nominal and subject to change without notice A specification referred to as typical is within 20 of a stated value at room temperature 25 C 77 F and a nominal input power voltage...

Page 33: ...Valleylab cart UC8009 or a stable flat surface Width 38 6 cm 15 2 in Depth 40 6 cm 16 0 in Height 12 7 cm 5 0 in not including feet Weight 5 9 kg 13 lbs Ambient temperature range 10 to 40 C 50 to 104...

Page 34: ...larm tones meet the requirements of IEC 60601 2 2 Ambient temperature range 34 to 70 C 29 to 158 F Relative humidity 0 to 95 noncondensing Atmospheric pressure 500 to 1060 millibars Duration of storag...

Page 35: ...solated ground reference for transmit and receive Volume adjustable 45 dBA minimum Frequency nominal Seal Mode 440 Hz Macrobipolar Mode 520 Hz Bipolar Mode 660 Hz Duration Continuous while the generat...

Page 36: ...ta output transmit line pin 3 isolated receive serial data input receive line pin 5 isolated ground reference for transmit and receive pin 7 regrasp indicator active high pin 8 RF_ACT indicator active...

Page 37: ...2 2 Enclosure source current ground open 300 A Source current patient leads all outputs Normal polarity intact ground 10 A Normal polarity ground open 50 A Reverse polarity ground open 50 A Sink curr...

Page 38: ...A Bipolar 360 VA Seal 480 VA Full regulation range 90 to 135 Vac Full regulation range 186 to 264 Vac Operating range 85 to 140 Vac Operating range 170 to 264 Vac Mains current maximum Idle 300 mArms...

Page 39: ...e in the event of a basic insulation failure because of the way in which they connect to the protective earth conductor ATTENTION Consult accompanying documents The generator output is floating isolat...

Page 40: ...nerator operates without interference The generator minimizes electromagnetic interference to video equipment used in the operating room Electromagnetic Compatibility IEC 60601 1 2 and IEC 60601 2 2 T...

Page 41: ...ment Emissions test Compliance Electromagnetic environment guidance RF emissions CISPR 11 Group 1 The LigaSure uses RF energy only for its internal function Therefore its RF emissions are very low and...

Page 42: ...ntial mode 2 kV common mode 1 kV differential mode 2 kV common mode Mains power quality should be that of a typical commercial or hospital environment Voltage dips short interruptions and voltage vari...

Page 43: ...rs as determined by an electromagnetic site survey should be less than the compliance level in each frequency range Interference may occur in the vicinity of equipment marked with the following symbol...

Page 44: ...ion distance according to frequency of transmitter m 150 kHz to 80MHz d 0 5 P 80MHz to 800MHz d 0 5 P 800MHz to 2 5GHz d P 0 01 0 05 m 0 05 m 0 1 m 0 1 0 16 m 0 16 m 0 32 m 1 0 5 m 0 5 m 1 m 10 1 6 m...

Page 45: ...d attached to the handset Crest factor is an indication of a waveform s ability to coagulate without a cutting effect Mode Maximum Open Circuit Voltage Vpp Vp Maximum Short Circuit Current Arms Maximu...

Page 46: ...c intensity settings in the vessel sealing mode Table 4 1 Open Circuit Output Volts Peak rms Macrobipolar Bipolar 473 kHz sinusoid 100 duty cycle Seal 473 kHz sinusoid pulsed Mode Generator Intensity...

Page 47: ...the macrobipolar and bipolar modes Table 4 2 Open Circuit Output Volts Peak rms Mode Generator Power Setting Watts 10 25 50 75 90 95 Macro Bipolar 133 94 201 142 293 207 355 251 354 250 287 203 Bipol...

Page 48: ...Impedance Graphs The following graphs depict the RF output as applied to tissue impedance for generator operative modes of macrobipolar and bipolar outputs Figure 4 3 Power in watts versus impedance...

Page 49: ...enerator Service Manual Figure 4 4 Power in watts versus impedance in ohms in the macrobipolar mode Figure 4 5 Power in watts versus impedance in ohms in the bipolar mode Artisan Technology Group Qual...

Page 50: ...he display board the footswitch board the low voltage power supply board the high voltage power supply board the Radio Frequency RF board and two smart connector boards This chapter includes the follo...

Page 51: ...LigaSure Vessel Sealing Generator Service Manual Block Diagram Figure 5 1 A diagram of generator component interconnections Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE w...

Page 52: ...ssure to vessels for a controlled time period to achieve a complete and permanent fusion of the vessel lumen This system works on isolated arteries and veins up to and including 7 mm in diameter and t...

Page 53: ...back microcontroller U11 which is a separate dedicated microcontroller controls the real time critical feedback control of the generator RF output All system analog signals are available to these micr...

Page 54: ...microcontroller is an 80C562 It receives commands from the main microcontroller and when the generator is activated establishes the appropriate relay closures and activates RF output It continually ad...

Page 55: ...mability ISP The Main PSD835G2 is 1 on the JTAG chain and the Feedback PSD835G2 with the exception that the 512K x 8 Flash Memory for the Main PSD835G2 is accessed in a bank switching methodology and...

Page 56: ...t represents the generator mode to be activated The code generates a unique waveform pattern to be delivered to the RF output stage of the generator The T_ON microcontroller reads and evaluates the co...

Page 57: ...except as single characters are read from or written to the serial port The serial port configuration follows 9600 baud 8 data bits 1 stop bit no parity This timing is derived from the main microcont...

Page 58: ...splays an error message and shuts down all generator output Instant Response Algorithm This algorithm controls the current power and voltage adjustments for all modes Controlling the maximum output vo...

Page 59: ...Display Board Refer to Chapter 10 Service Parts for components and the Schematics Supplement for system schematics The display board resides in the front panel assembly It contains RF indicator lamps...

Page 60: ...these LEDs 1 4 U11 drives the seven segment displays that indicate power settings U5 and U6 indicate the bipolar power setting U2 and U3 indicate the macrobipolar power setting and U1 U4 U7 U8 and U9...

Page 61: ...e keyboard switches Command control signals KBD 01 through KBD 06 originating in the control board choose the up and down power select bit lines To read the switches the main microcontroller enables B...

Page 62: ...ired by the IEC the footswitch circuit is isolated from patient connected and ground referenced circuits and is able to withstand a potential of 500 Vrms 50 60 Hz To obtain this isolation an isolated...

Page 63: ...and the U7B output transistor remains on The output of U7B creates a voltage divider through R5 R19 the volume control potentiometer and R6 to attenuate the audio signal to levels acceptable for input...

Page 64: ...divider R40 and R41 measures the input line voltage Since the voltage at pin 8 varies with the line it can sense the line voltage zero crossing as well as the peak voltage Pins 2 and 3 are inputs to...

Page 65: ...he output of the power transformer L1 C30 and C31 filter the rectified power signal The regulated HVDC output from this supply is the input power to the RF stage of the generator The SYS_ECON signal f...

Page 66: ...ng When the temperature drops to approximately 55 C the circuit reverts to its low temperature state and normal operation resumes Low Voltage Power Supply The low voltage power supply is a medical gra...

Page 67: ...l macrobipolar bipolar RF driver circuit RF output circuit RF output relays EKG output relay Primary sense circuits Redundant sense circuits Single fault protection circuit Heat sink Isobloc circuit I...

Page 68: ...rgy to the front panel bipolar output receptacle located on the right side of the generator below the macrobipolar and bipolar power display The macrobipolar mode RF output signal exhibits a continuou...

Page 69: ...2 C59 C65 C66 C60 and power MOSFET Q5 RF energy results when the T_ON signal with a high voltage DC HVDC source present at test point TP13 switches device Q5 on and off HVDC originated by the high vol...

Page 70: ...ife cycle and an increased mean time between failure MTBF for the relay by avoiding the excess contact burn and premature contact failure experienced with hot switched relay activations The following...

Page 71: ...in of one This offers maximum stability and precision and places the correlation of developed RF output voltage and current on resistors R44 and R45 V_SEN and I_SEN signals then go to the microcontrol...

Page 72: ...non contact redundant RF output current monitoring CR22 CR23 CR25 CR26 Diodes provide full wave bridge rectification of the signal recovered from T5 R51 Resistor provides a proportional measure of the...

Page 73: ...ain connect together such that the corresponding inputs simulate a wired NOR logic This implementation is necessary because a zero volt sense signal level without RF activation does not constitute a f...

Page 74: ...illator a resonant flyback transformer stage and secondary half wave rectifiers The IC chip U13 configuration is as an astable oscillator ground referenced with an operating frequency determined by R6...

Page 75: ...comparator outputs low which turns on one of the corresponding optoisolators OPT 1 through OPT4 The optoisolator connects to an input on the 82C55 expansion port in the main microcontroller circuit pu...

Page 76: ...a signal interface to the footswitch audio board routing footswitch RF request and audio tone control signals between the footswitch and control boards Handswitch RF output receptacles J10 J11 5 Coupl...

Page 77: ...smart address code Each optical sensor incorporates an infrared IR emitter and receptor device The IR devices read the mated plug surface for code identification If the emitter sends an infrared beam...

Page 78: ...er unpacking or after servicing the LigaSure generator set it up and verify that it functions correctly If the generator does not satisfactorily complete the self test calibrate it to ensure its accur...

Page 79: ...sound to verify that the speaker is working properly 7 If the self test is successful a tone sounds Verify that each display shows a power setting of 1 watt or a yellow bar for seal If the self test i...

Page 80: ...l using a smart connector adapter as necessary Verify that the receptacle indicator illuminates green to confirm a proper connection Warning Electric Shock Hazard Do not connect wet accessories to the...

Page 81: ...ht bar increments with a range of one to five bars Increasing the intensity increases the total energy delivered to the tissue for the duration of the seal cycle Activating the Surgical Instrument To...

Page 82: ...er IEC 60601 2 2 Figure 104 5 10 100 200 400 and 1K ohm all 250 watt 1 tolerance noninductive power resistors Dale NH 250 or equivalent Warning Electric Shock Hazard When taking measurements or troubl...

Page 83: ...y Refer to Chapter 8 Footswitch Board for further instructions Front Panel 4 Check the bipolar handset receptacle on the front panel for obstructions or damage You can connect either a footswitching o...

Page 84: ...Front Panel and Display Board for further instructions 6 With the bipolar and vessel sealing handsets properly mated check that the smart indicator lamp illuminates green If the smart indicator lamp...

Page 85: ...the corresponding replacement instructions If you find evidence of damage on the RF board replace the board only if the damage is severe Refer to Chapter 8 RF Board and Heat Sink for further instruct...

Page 86: ...vers the serial port Set the screws and plate aside for re installation C Connect a standard DB 9 serial cable to your computer and to the generator serial port Pin 2 is the serial output data line Pi...

Page 87: ...s the number of times the system has recorded a specific error code in non volatile memory PSF Prints the 10 most recent system errors recorded in non volatile memory Format Error MM DD YY HH MM PSL P...

Page 88: ...s working properly 2 If the self test is successful a tone sounds Verify the following The macrobipolar and bipolar displays each show a power setting of one watt The seal display shows one amber bar...

Page 89: ...n Testing the Generator 2 Establish the communications link as described in Using the RS 232 Serial Port in this chapter 3 Connect the test equipment for bipolar output a Connect the smart connector a...

Page 90: ...6 1 The leakage current test circuit per IEC 60601 1 Output Receptacles Source Current 1 Set the DVM to AC volts 200 millivolts mV and connect the leakage current test circuit 2 Turn on the generator...

Page 91: ...on the generator 110 or 220 Vac and connect the end of the leakage current test circuit to mains voltage through a 120 k resistor 3 Connect the other side of the IEC leakage load to all output recept...

Page 92: ...crobipolar and Bipolar High Frequency Leakage Current 1 Remove the vessel sealing accessories 2 Connect the 200 ohm load from one side of the bipolar output through the current transformer to the equi...

Page 93: ...t Certain values you cannot adjust but you must verify them Notice After completing any calibration step follow the instructions displayed on the terminal Step Description Adjustable 1 LigaSure Genera...

Page 94: ...PI ground to the body of the battery and record it 2 Attach the computer to the generator Connect a standard DB 9 serial cable to your computer and to the generator serial port 3 On your computer ente...

Page 95: ...ut you must perform steps 4 Isns 5 Vsns and 6 ECON in order E Whenever a calibration step calls for keying the generator press the MACROBIPOLAR left pedal on the footswitch F Follow the step instructi...

Page 96: ...e bipolar output jacks with one side passing through a Pearson 411 current transformer connected to a Fluke 8920A RMS voltmeter C Activate the generator in macrobipolar mode using the rear footswitch...

Page 97: ...ivate macrobipolar into a 500 ohm load until value displayed on terminal screen stabilizes within one count This step requires no gain adjustment B Econ Cal Hi Calibrates High Voltage Control HI Activ...

Page 98: ...ter to troubleshoot the system Inspect the generator connectors and cords and internal components Identify and correct a malfunction If the system displays an alarm number take the appropriate action...

Page 99: ...functioning Refer to Chapter 8 Fuses for further instructions Inspecting Receptacles Equipment Bipolar footswitch Vessel sealing footswitch Bipolar instrument cords handswitching and footswitching Ve...

Page 100: ...to verify a secure fit If the connection is loose try another handset If the connection is still loose replace the front panel Refer to Chapter 8 Front Panel and Display Board for further instructions...

Page 101: ...e corresponding replacement instructions If you find evidence of damage on the RF board replace the board only if the damage is severe Refer to Chapter 8 RF Board and Heat Sink for further instruction...

Page 102: ...Close the fuse drawer If necessary replace the fuse s For instructions refer to Chapter 8 Fuses If a problem persists check the low voltage power supply Faulty power entry module or connections Check...

Page 103: ...Replace the power switch For instructions refer to Chapter 8 Front Panel and Display Board Malfunctioning front panel components Replace the front panel assembly For instructions refer to Chapter 8 Fr...

Page 104: ...ion correctly when pressed Faulty ribbon cable between control board and display board Check connect the ribbon cable that connects the display board to the control board Incorrect information communi...

Page 105: ...dicator and the tone does not sound replace the control board For instructions refer to Chapter 8 Control Board and Battery RF output stage malfunction high voltage is present during activation Troubl...

Page 106: ...itor and if applicable for the generator Check other electrical equipment in the room for defective grounds Electrical equipment grounding connects to different objects rather than a common ground The...

Page 107: ...necessary to reprogram the pacemaker Abnormal neuromuscular stimulation stop surgery immediately Metal to metal sparking Check all connections to the generator and active electrodes Abnormal 50 60 Hz...

Page 108: ...conversion failed to complete in the allotted time MASTER_SETTINGS_TIMEOUT Master failed to write settings into DPRAM within allotted time for feedback microprocessor POST_COMPLETE_TIMEOUT Master fai...

Page 109: ...the feedback s power deactivation state machine state variable FB_INVALID_MODE_CHANGE An attempt was made to transition directly from one RF output mode to another without first disabling RF from mas...

Page 110: ...e FB_RESET_ERROR Master unable to reset feedback microprocessor at initialization WSI_RAM_ERROR ST Microelectronics ST Microelectronics RAM failed test during initialization DPRAM_ERROR DPRAM failed t...

Page 111: ...ery backed RAM was found to have an invalid CRC at powerup Reported to serial port only Replace the battery If the error code reappears replace the control board 115 MM_DOSERR_TEST_ERROR Master microp...

Page 112: ...tch or the accessory is faulty If the error reappears turn off the power disconnect the ribbon cable that connects the footswitch board to the RF board and turn the power back on If no error appears r...

Page 113: ...ard 134 MN_FAILED_ATOD_TEST Master processor detected an A D error during powerup Turn the power switch off O then on again If the error reappears replace the control board If the error reappears repl...

Page 114: ...Turn the power switch off O then on again If the error reappears replace the control board 166 DOSERR_ECON_HV_ERROR Sys_Econ and HV_SNS do not compare within limits during keying Turn the power switc...

Page 115: ...R which is illegal in the current context MNS_INVALID_STATE_VALUE The next_generator_state had an invalid undefined state value that was detected in the routine manage_normal_state MRE_INVALID_STATE_V...

Page 116: ...ebounce state value in the overall button state variable PBI_INTERNAL_MEMORY_FAULT process_button_inputs detected an invalid combination of the overall button state variable num_key_strokes and num_bu...

Page 117: ...rr_mode field MA_AT_INVALID_ALERT_TYPE manage_audio_alert_transition detected an invalid value in the alert type variable current alert CCD_CAL_DATA_CORRUPTED check_cal_data detected an invalid CRC in...

Page 118: ...te had an invalid undefined state value that was detected in manage_calibration_state MCS_ILLEGAL_CAL_STATE_VALUE cal_step had an invalid undefined state value that was detected in manage_calibration_...

Page 119: ...Turn the power switch off O then on again If the error reappears replace the control board 232 DOSERR_POWER_EXCEEDED Power computed on master side is greater than excess power limit specified by IEC 6...

Page 120: ...ard Low voltage LV power supply board Front panel Display board Front panel components including the power switch RF board Heat sink Power entry module Fuses including two in the fuse drawer one on th...

Page 121: ...as the original fuse Caution The generator contains electrostatic sensitive components When repairing the generator work at a static control workstation Wear a grounding strap when handling electrosta...

Page 122: ...ot show the control board which resides on the inside of the right wall of the generator Figure 8 1 The location of major components in the generator Control Board resides on the inside of this wall F...

Page 123: ...e Disconnect any footswitches or handsets currently connected to the generator 2 Remove three screws M4 x 7 x 8 that secure the cover to the chassis 3 Slide the cover toward the rear of the chassis Wh...

Page 124: ...tor High Voltage HV Power Supply Board Removing the HV power supply board involves removing the cover removing the RF heat sink bracket disconnecting four cables removing three screws and lifting the...

Page 125: ...ground to the board by way of a ring tongue terminal 6 Lift the HV power supply board out of the chassis Figure 8 3 Heat sink bracket and cable connections on the HV power supply board Name Ref Locati...

Page 126: ...Power Supply Board 1 Orient the board correctly components with large red caps near the front then lower it until the bottom edge fits into the slot in the HV power supply rail 2 Replace the three sc...

Page 127: ...em toward the connector 4 Position the RF heat sink bracket on the heat sink and the chassis Replace the two screws M4 x 7 x 8 that secure the RF heat sink bracket to the heat sink and the chassis 5 R...

Page 128: ...ator Disconnect the power cord from the wall receptacle Disconnect any footswitches or handsets currently connected to the generator 2 Remove the cover 3 Disconnect the display board ribbon cable from...

Page 129: ...the control board from the chassis If you need to replace the battery refer to Replacing the Battery in this chapter If you need to replace the control board refer to Control Board and Battery in this...

Page 130: ...e control board if you need to replace the battery follow this procedure 1 Grasp the battery and slide it up and out of the socket 2 Position the new 3 V button cell battery above the socket so that t...

Page 131: ...ctor on the RF board 4 Position the mounting brackets one on each upper corner and one on the upper center of the board Replace three screws M4 x 7 x 8 to secure the mounting brackets and the control...

Page 132: ...or b On the RF board pull the cable out of its connector 5 Remove five screws M3 x 5 x 8 and washers that secure the footswitch board to the chassis a On the outside of the unit remove the two screws...

Page 133: ...rd and the rear wall of the unit c Install the lower left and upper right screws and washers first then the remaining two screws and washers 4 Connect the footswitch ribbon cable to the RF board and t...

Page 134: ...he cover 3 Remove two cables from the LV power supply All reference points in this table appear on the HV power supply board Figure 8 8 LV power supply cable connections 4 Remove two screws M4 x 7 x 8...

Page 135: ...f the unit to snap it onto the standoffs 3 Replace the screws M4 x 7 x 8 that secure the board to the chassis 4 Reconnect two cables to the LV power supply 5 Install the cover For further information...

Page 136: ...he generator 2 Remove the cover 3 Disconnect three cables 4 Remove four screws M4 x 7 x 8 Two screws with washers one each on the left and right upper corners formed at the front and sides of the unit...

Page 137: ...ssel Sealing Generator Service Manual Figure 8 10 Removing the front panel from the chassis Figure 8 11 The wires attached to the rear of the power switch Artisan Technology Group Quality Instrumentat...

Page 138: ...elease the cable rotate the latches away from the connector 2 Remove five screws 4 20 x 5 16 in thread forming Two screws on either end of the board One screw immediately under the ribbon cable When y...

Page 139: ...om of the chassis fits into the groove on the bottom of the front panel Tabs on the front panel upper corners fit outside the corresponding chassis mounting tabs 3 Replace the four screws that secure...

Page 140: ...the cover For further information refer to Cover in this chapter 6 Connect the power cord to the wall receptacle Name Ref Location Wires Colors RF out cables 2 J10 J11 on RF board Near front edge of R...

Page 141: ...wall receptacle Disconnect any footswitches or handsets currently connected to the generator 2 Remove the cover 3 Remove the front panel a Disconnect three cables b Remove four screws M4 x 7 x 8 c Two...

Page 142: ...the power switch to release it from the panel b Push the switch forward to remove it from the panel Figure 8 14 Power switch connections and tabs Name Location Pin No Wires Color From AC switch 2 Top...

Page 143: ...that secure the front panel to the chassis Two screws with washers one each on the left and right upper corners formed at the front and sides of the unit Two screws on the underside of the front pane...

Page 144: ...d RF board reverses the process Tools Needed Phillips head screwdriver Remove the RF board 1 Turn off the generator Disconnect the power cord from the wall receptacle Disconnect any footswitches or ha...

Page 145: ...transistor FET at Q5 on the RF board Name Ref Location Wires Colors Footswitch ribbon cable J3 on foot switch board Upper edge of footswitch board ribbon LV power supply cable J7 on RF board Near lef...

Page 146: ...k Replacement Procedures LigaSure Vessel Sealing Generator Service Manual 8 27 Figure 8 15 Removing the RF board from the chassis Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOU...

Page 147: ...e 4 Remove the heat sink from the RF board If you intend to replace the HV field effect transistor FET at Q5 on the RF board do it now If not go to the next step Install the Heat Sink 1 Position the h...

Page 148: ...pe Location 2 Nylon At the center and at the right front of the RF board 1 Nylon In the center of three transformers 1 Steel with washers At front left corner of RF board 1 Steel with washers Near bac...

Page 149: ...g cables removing screws and lifting the module out of the chassis Installing a new power entry module reverses the process Tools Needed Phillips head screwdriver Remove the Power Entry Module 1 Turn...

Page 150: ...crews M3 x 5 x 8 that secure the module to the rear panel 3 Reconnect the power entry module wires 4 Install the cover For further information refer to Cover in this chapter 5 Reconnect the power cord...

Page 151: ...Disconnect the power cord from the power entry module for easier access to the fuse drawer 2 To release the fuse drawer insert a small flathead screwdriver into the slot on the drawer above the power...

Page 152: ...further information refer to Cover in this chapter One Fuse on the HV Power Supply Board 1 Turn off the generator Disconnect the power cord from the wall receptacle Disconnect the power cord from the...

Page 153: ...acting 6 Install the HV power supply board For more information refer to High Voltage HV Power Supply Board in this chapter 7 Install the cover For further information refer to Cover in this chapter...

Page 154: ...Repair Policy This chapter contains the following information The manufacturer s responsibility Returning the generator for service Returning circuit boards Service centers Artisan Technology Group Qu...

Page 155: ...for use For warranty information refer to the Warranty at the end of this guide Returning the Generator for Service Before you return the generator call your Valleylab Representative for assistance If...

Page 156: ...rator A Attach a tag to the generator that includes the Return Authorization Number and the information hospital phone number etc listed in Step 1 Obtain a Return Authorization Number B Be sure the ge...

Page 157: ...h a tag to the container that includes the Return Authorization Number and the information hospital phone number etc listed in Step 1 Obtain a Return Authorization Number 4 Ship the circuit board prep...

Page 158: ...Vessel Sealing Generator Service Manual 10 1 In this chapter Ordering replacement parts Replacement parts list 1Service Parts Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE...

Page 159: ...must be equal to or better than original Substituting lower grade parts can adversely affect system performance If you have any questions about ordering parts please call Valleylab Customer Service at...

Page 160: ...Control board List of Parts Assembly Box Control Board Description LigaSure bipolar footswitch LigaSure vessel sealing footswitch LigaSure User s Guide LigaSure bipolar adapter LigaSure Service Manua...

Page 161: ...ower supply board 207 000 185 LigaSure Powercord 110 V RT angled molded 207 002 060 LigaSure 8 Powercord 220 V RT angled molded 207 002 062 LigaSure HVPS control cable 207 500 600 LigaSure chassis gro...

Page 162: ...e keyboard 207 500 815 LigaSure RF output cable 207 500 623 LigaSure display board 207 700 228 LigaSure Smart Connector 1002033 LigaSure display board left ground clip 213 130 052 LigaSure display boa...

Page 163: ...r FET 2N7000KL 239 200 095 TS1 Transistor voltage suppressor 239 200 056 Q3 Q4 Q5 Q6 FET power IRFP450 239 200 063 CR3 Diode Rect AC bridge RS604 239 700 073 CR8 Diode Rect 120 V 8 A ISL9K8120P3 239 7...

Page 164: ...Fuse 5 x 20 mm 1 A slow UL CS 215 100 075 F2 F3 Fuse 5 x 20 mm 0 25 A Slo Blo 215 100 083 K1 12 V Relay 230 013 000 RL1 RL2 RL3 RL4 RL 5 RL6 COTO 9442 Relay 230 017 003 Q1 Q2 Q3 Q4 FET VN10KM transis...

Page 165: ...Board Assembly Reference Designator Description Valleylab Part Number LigaSure PCB effect mode control assembly 1000970 U9 T On ASIC programmed IC 210 730 250 3 V battery 250 020 028 Artisan Technolo...

Page 166: ...e of shipment Mounting fixtures all models One year from date of shipment Footswitches all models One year from date of shipment Patient return electrodes Shelf life only as stated on packaging Steril...

Page 167: ...relating in any way to this warranty is the District Court of the County of Boulder State of Colorado USA Valleylab its dealers and representatives reserve the right to make changes in equipment built...

Page 168: ...service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE IN...

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