Ethicon GEN01 Service Manual1
Contents
1. Appendix A Diagnostic Service Mode Flow Diagram Appendix B Wiring Diagrams and Schematic 115 Volt Wir ing Model 230 Volt Wiring Models GEN22 GEN32 115 Volt Routing Model GENO1 230 Volt Routing Models GEN22 GEN32 Generator PCB Schematic Generator PCB Component Location Keyboard Interlock PCB Schematic Keyboard Interlock Component Location CPU PCB Schematic CPU PCB Component Location Type CF Isolated Applied Part Dangerous Voltage 1 1 The ULTRACISION System 2 1 Hand Piece 2 2 Generator and Foot Switch Chapter 1 General Description The ULTRACISION HARMONIC SCALPEL System is indicated for incising tissue when bleeding control and minimal thermal injury are desired The System s instruments can be used as an adjunct to or substitute for electrosurgery and steel scalpels The System operates in two power modes variable and full The ULTRACISION HARMONIC SCALPEL instrument blades vibrate longitudinally at 55 kilohertz This ultrasonic vibration at the blade enhances its cutting ability while the vibrating blade edge coagulates bleeders as tissues are incised Hemostasis occurs when tissue couples with the blade This coupling causes collagen molecules within the tissue to vibrate and become denatured forming a coagulum The cutting power can be adjusted during the incision to increase or decrease coagulation and speed of cutting Coagulation of large bleeders can be accomplished by captive2. NOTE Before replacing the microprocessor PCB check continuity in the sixty pin ribbon cable leading from the generator PCB to the processor Replacement 1 Remove the line cord and the two remaining phillips head screws securing the PCB to the stand off 2 Remove the cabling leading to the generator and replace the PCB with the appropriate part specified in Appendix The LCD is mounted to the back of the front panel assembly It receives control signals and supply voltage from J3 on the generator PCB and backlight power from J10 on the generator PCB For a functional description see section 2 2 The majority of the functionality of the display has been tested in sections 5 2 and 5 3 The simplest way to determine if the LCD is working is by substitution However there are some additional tests that can be performed with the generator power on as follows 1 Ifthe display appears blank or is difficult to read turn the viewing angle adjustment pot located on the front panel of the type generator If this has no effect re test the display with a substitute microprocessor board before replacing the display 2 nonsense characters are displayed turn the generator off and check the seating of all the ribbon cables leading to the generator microprocessor and display PCB Also check the continuity of the 14 conductor ribbon cable leading from the generator PCB to the display before replacing the display 3 Ifa back lighted display
3. The third function is to rectify filter and regulate the low voltage AC to generate the logic voltages These voltages are 5 VDC 12 VDC and 12 VDC Logic voltage is also inverted to supply power for the LCD back light Keyboard Interlock PCB The Keyboard portion of this PCB informs the user of the operative state of the ULTRACISION HARMONIC SCALPEL System using LED indicators It also allows the user to change the default settings as described in Chapter 3 of this manual and in the Generator Manual The interlock portion of this assembly acts as a shunt placing a resistive load across the output to the blade whenever it is not activated at the VAR or FULL power levels The interlock is used to quickly stop the blade motion once the Foot Switch pedal is released Microprocessor PCB The microprocessor PCB contains the software program that drives the ULTRACISION HARMONIC SCALPEL System The software monitors zero crossings regulates DC voltage processes button and pedal activations and drives the liquid crystal display It also monitors performance of the generator PCB and the acoustic drive train Liquid Crystal Display The liquid crystal display reports the operative mode of the ULTRACISION System It is driven by the microprocessor PCB via the generator PCB Foot Switch The Foot Switch module allows the user to activate the system in either variable or full mode based on which foot pedal is being pressed Pedal activations are com
4. the voltage is not referenced to earth ground High Voltage Transformer produces high voltage AC 250 VAC that is later rectified filtered and regulated to produce a variable DC level used in driving the Hand Piece It also provides an important safety barrier The voltage generated on the secondary of the transformer is isolated i e the voltage is not referenced to earth ground Generator PCB produces power at ultrasonic frequencies to drive the Hand Piece This is accomplished as follows An SCR switching circuit filter and software regulate power rectified from the high voltage transformer to a predefined level determined by the user selected power level Additionally a zero crossing detection circuit informs the software when the AC line voltage swings through zero volts This allows the software to schedule SCR firings The DC voltage is then converted into a 55 kilohertz 4 2 KHz square wave by means of a FET switching circuit The 55 kilohertz square wave is then filtered by a resonant LC network to produce the sinusoidal wave form that drives the hand piece In addition the generator PCB contains a phase lock loop circuit that monitors the resonant frequency of the Hand Piece and adjusts the 55 kilohertz up or down to stay at resonance which changes with temperature and load A secondary function of the Generator PCB is to provide a central point of connectivity for the other PCBs and modules in the Generator
5. 12 Deep Approximately 20 pounds GENO1 115 VAC 60 Hz 2 Amps 230 VA GEN32 230 VAC 50 Hz 1 Amp 230 VA Max GENO1 Two 3 AG Slow Blow 1 4 x 1 1 4 2 Amps located the power entry module Three Internal 5 mm x 20 mm Slow Blow 1 1 Amp 1 0 25 Amps and 1 1 6 Amps GEN32 Six Internal 5 mm x 20 mm Slow Blow 2 0 5 Amps 2 0 25 Amps and 2 0 63 Amps 4 5 psi min Approximately 20 liters per minute At least 2 in the rear of the unit and the bottom vents should not be obstructed 1 second HP050 HP051 HPTUV HITUV Hand Piece 7 Cable 10 HP052 HP053 H2TUV H3TUV Hand Piece 6 Cable 10 5 Electric 7 pin Air 1 4 CPC Electric 7 pin Air None Steam EO or STERRAD Steam EO or STERRAD Dual SPST Normally Off 12 Volts maximum at 010 Amp 3 Conductor Shielded 15 Foot 3 Conductor 16 AWG Grounded Hospital Grade Power Cord terminated with IEC 320 Connector 2 Meter 3 Conductor 10A 250VAC Grounded Hospital Grade Shielded Power Cord terminated with an IEC 320 Connector Warning The output isolation transformer shown in Figure 4 should not be allowed to come in contact with any other wiring or anything else that could bridge the isolation barrier The insulation on the cable leading from the isolation transformer to the hand piece connector must be intact Environmental Conditions for Transport and Storage Temp
6. Allow Hand Piece to cool at room temperature for 15 30 minutes Leave both Hand Piece connectors attached to the Generator and leave the Generator power on and in STANDBY mode for 5 minutes to allow the Hand Piece air flow to cool and dry the Hand Piece After pushing the Standby Button on the Generator manually tighten the instrument onto the Hand Piece finger tight only Use the blade wrench to secure the instrument completely to the Hand Piece by turning the wrench clockwise until a snap is heard Push the Standby Button on the Generator and replace instrument blade and or sheath Replace Hand Piece Refer to section 6 for a module by module diagnosis or call for service Numbers are listed at the beginning of this chapter 5 1 Trouble Shooting Guide continued Chapter 5 Upper Level Diagnostics continued Symptom The Generator will not enter READY mode from STANDBY mode Probable cause Corrective Action Foot Switch pedal is depressed while Release all pedals and switches while entering pushing Standby Button READY mode Symptom The Generator beeps and or changes mode unexpectedly Probable cause Corrective Action The Generator is located too close to an Locate the Generator at least one foot away from electrosurgical generator electrosurgical generators Hand Piece is defective Replace the Hand Piece Foot Switch is defective Replace the Foot Switch Refer to Chapter 6 or call for service Numb
7. Detailed Diagnosis section Chapter 6 of the manual and test each module for the expected input and output Chapter 6 Detailed Diagnostics This section of the manual specifies the expected input and output of each module of the ULTRACISION System Previous sections of this manual will direct the service person to a specific module sub section within this section Each sub section specifies the testing procedure including assembly disassembly and test equipment NOTE Directions such as left and right assume that the reader is facing the operator s panel Warning High voltages and currents are used in the generator Take electric shock precautions Warning Ultrasonic energy can cause severe burns Handle acoustic components with care Caution Damage may be done to the generator if power is lost to the microprocessor PCB Whenever microprocessor PCB performance is in doubt the high voltage power supply should be disabled refer to section 6 3 6 for instructions 6 1 Test Equipment 6 2 Hand Piece Assembly 6 3 Generator and Foot Switch Chapter 6 Detailed Diagnostics continued The following is a list of the equipment required in order to perform this level of testing 1 A digital voltmeter FLUKE model 45 or equivalent with insulated test probes and clips P A dual channel oscilloscope with x10 probes 3 An autotransformer adjusted for nominal line voltage 115 or 230 volts 4 A means of floating
8. basic tests which follow the more detailed functional tests described in section 5 3 are recommended Caution During this testing the instrument blade will become active Do not touch the blade Step Instruction EN Energize the blade by pressing a pedal on the Foot Switch Apply the blade to wood cardboard or wax and verify the blade burns and cuts If the system fails this basic functional verification refer to the upper level diagnostic section of this manual Chapter 5 4 1 System Configuration 4 2 Language Selection 4 3 Line Rate Selection 5 1 Trouble Shooting Guide Chapter 4 Initial Setup Two features of the system are user programmable They are the displayed language and line rate The system may be configured to display messages in languages other than the default setting of English These languages are French Spanish Italian and German Also the system can be configured to run at 50 or 60 Hertz The system is preset at the factory such that all 115 VAC units Model GENO1 are at 60 Hz and all 230 VAC units Model GEN32 are at 50 Hz If the line rate is set inappropriately a system error will always be displayed at normal power up To change the language or line rate refer to the following sections Follow steps 1 through 5 in section 3 2 to prepare the Generator for power up Prior to turning the Generator on press and hold the Increase and Decrease Buttons simultaneously with one hand While h
9. does not illuminate use the oscilloscope set for 80 volts at 300 Hz to verify that approximately 80 VAC at 300 Hz is present across locations one and three of J10 on the generator PCB This measurement must be made with J10 plugged in Therefore best access to these locations is from the bottom of the generator PCB If this is not the voltage measured check the cabling leading to J10 on the generator PCB If the cabling is intact re test the display with a substitute generator PCB If this resolves the problem refer to section 6 3 6 and replace the generator PCB 6 3 9 Liquid Crystal Display continued 6 3 10 Foot Switch Chapter 6 Detailed Diagnostics continued Replacement 1 Remove the line cord and un screw the two phillips head screws which hold the front panel L brackets to the base plate Loosen the two phillips head screws that hold the front panel to the generator and remove the front panel by lifting it up and away from the generator Remove the phillips head screw securing the display to the back panel Remove all cabling leading to the display and replace it with the appropriate part listed in Appendix C NOTE It is important to save and re install the nylon bushings that insulate the display from the front panel The foot switch is connected externally to the back panel of the generator For a functional description see section 2 2 The foot switch contains E S D protection resistors in the cable connect
10. on this display briefly indicates that a SELF TEST is in progress This display is also used for alarm messages When activated by service personnel this display also shows diagnostic information language selection and Generator adjustment information 4 Increase Power Button Push this button to increase the variable power setting to the desired level as displayed on the liquid crystal display from 1 minimum power to 5 maximum power 5 Decrease Power Button Push this button to decrease the variable power setting to the desired level from 5 to 1 6 Save Button Push this button to save the currently selected variable power level so that it is automatically displayed the next time the Generator power is turned on 7 Volume Turn this knob to adjust the sound of the Audio Annunciator The sound level cannot be adjusted to zero 8 Display Turn this knob to obtain the best liquid crystal display appearance for your particular lighting and viewing angle Chapter Operation continued 3 1 9 Status Lights Ready Light This light is illuminated when the system is ready to use This light is off while the Controls Hand Piece is energized or in STANDBY mode Indi rs an d D and Variable Light This light is flashed on and off when the Hand Piece is energized at the onnec fons variable VAR power level continued Full Light This light is flashed on and off when the Hand Piece is energized at the full FULL power le
11. the generator ground i e breaking the safety ground connection at the line cord NOTE For all the following tests it is helpful to refer to the appropriate wiring diagram 115 VAC or 230 VAC located in Appendix B The majority of problems with hand pieces are covered in section 5 1 the Trouble Shooting Guide The Hand Piece itself is a permanently assembled device with no internal components that are serviceable The Hand Piece has a limited life and will eventually wear out Because the sub assemblies of the Hand Piece are inaccessible this test verifies some aspects of continuity This test will partially determine if the Hand Piece has an open wire only but will not check all wires and will not determine if the Hand Piece is worn out Hand Piece Models HP050 HP051 HPTUV H1TUV With the Hand Piece unplugged from the Generator Verify continuity between pins 4 6 and 7 in the Hand Piece electrical connector For Models 050 and 051 verify continuity between pin 1 and the tip of the blade see Figure 3 for pin location For Models HPTUV H1TUV verify continuity betwen pin 2 and the tip of the blade see Figure 3 for pin location If an open wire is detected in a domestic hand piece models 50 051 un screw the back of the electrical connector and check for any broken wires If breaks are noticeable repair the connector in accordance with Figure 3 If no breaks are noticed or an international hand piece is be
12. 0 VAC 2 Supply power and turn the front panel switch on With nominal line voltage the open circuit voltage between locations 7 and 8 should be between 250 and 260 volts AC 3 Remove the power cord and replace the J1 plug If power is available to the transformer and there is no output voltage remove the line cord refer to the wiring diagram Appendix B and inspect the wiring leading to the transformer If the wiring appears intact replace the transformer Replacement 1 Remove the line cord the microprocessor PCB See section 6 3 8 and the generator PCB see section 6 3 6 2 De solder the primary and secondary connections and remove the four nuts washers securing the transformer to the base plate 3 Remove the transformer and replace it with the appropriate part listed in Appendix C The generator PCB is supported on an aluminum bracket above the high and low voltage transformers and under the microprocessor PCB The generator PCB serves as a central point of connectivity and receives inputs from all other PCBs and transformers For a functional description see section 2 2 The simplest way to determine if the generator PCB is working is by substitution However the following tests can be performed if preferred In order to access the generator PCB s test points the microprocessor PCB must be re oriented in the service position With the line cord removed remove the four screws securing the microprocessor PCB and use
13. MESTIC INTERNATIONAL HP050 HP051 HPTUV H1TUV Hand Piece Models HP052 HP053 H2TUV H3TUV NO POWER NO CONNECTIO NO NO CONNECTION CONNECTION NO CONNECTION CONNECTION DOMESTIC INTERNATIONAL HP052 HP053 H2TUV H3TUV 6 3 1 Power Module 6 3 2 AC Fusing and Distribution Chapter 6 Detailed Diagnostics continued Warning The output terminals of this device are live whenever the line cord is plugged into the Generator and into a live outlet The power entry module is located on the left side of the back panel and wired with quick disconnect terminals For a functional description see section 2 2 Verification 1 Input power is supplied via the appliance connector on the line cord If not already so insert the cord fully into the back of this module 2 The output terminals black and white wires should carry the appropriate line voltage regardless of the position of the front panel power switch Plug the cord into an outlet and verify this voltage 3 In 115 VAC generators Model GENO1 the entry module contains an external fuse drawer Check these fuses see section 6 3 2 before deciding to replace this module Replacement 1 Disconnect the line cord remove the two terminals de solder the green grounding wire and un screw the two machine screws securing the power entry module to the back panel 2 Remove the power entry module and replace it with the appropri
14. SAVE key simulates error Error 39 STANDBY or UP DOWN ccc metered current READY EEDOFF vvv metered voltage service mode frequency switches UP DOWN amp SAVE keys level disabled mode STANDBY 3 CHECK HAND PIECE ERROR MESSAGES from any mode or Power must be turned off and back on again SYSTEM ERROR Beeper and LEDs syncopate alternating with Software removes connector voltage TURN OFF THEN ON BAR CODE P40238P02 2 ETHICON ENDO SURGERY ETHICON ENDO SURGERY INC ETHICON ENDO SURGERY INC 1996 Cincinnati OH 45242 2839 USA P40238P02 IWAOUdd Au39ufs 00N3 LNOHLIM ANY NI 5 38 OL LON AWAIDUNS OGNA NODIHLA a lt 5 lt a NUMBER P40238P02 REVISIONS ARTWORK NUMBER A83513P00 PRODUCT BLACK
15. ULTRACISION HARMONIC SCALPEL Service Manual ETHICON ENDO SURGERY efwwen jehwwen company ULTRACISION HARMONIC SCALPEL Service Manual Table of Contents Chapter 1 General Description 1 1 The ULTRACISION HARMONIC SCALPEL System Chapter 2 Principles of Operation 2 1 Hand Piece 2 2 Generator and Foot Switch Chapter 3 Basic Operation 3 1 Description of Controls Indicators Connections 3 2 Instrument Preparation and Hand Piece Attachment 3 3 System Test Chapter 4 Initial Setup 4 1 System Configuration 4 2 Language Selection 4 3 Line Rate Selection Chapter 5 Upper Level Diagnostics 5 1 Trouble Shooting Guide 5 2 Diagnostic Software 5 3 Extended Functional Test Chapter 6 Detailed Diagnostics 6 1 Test Equipment 6 2 Hand Piece Assembly 6 3 Generator and Foot Switch 6 3 1 Power Entry Module 6 3 2 AC Fusing and Distribution 6 3 3 Compressor 6 3 4 Low Voltage Transformer 6 3 5 High Voltage Transformer 6 3 6 Generator PCB 6 3 7 Keyboard Interlock PCB 6 3 8 Microprocessor PCB 6 3 9 Liquid Crystal Display 6 3 10 Foot Switch Chapter 7 Specifications 27 7 1 Generator 7 2 Hand Piece 7 3 Foot Switch 7 4 Power Cord 7 5 Transport and Storage 7 6 Mode of Operation 4 ETHICON ENDO SURGERY fohmonsfohwon company ULTRACISION HARMONIC SCALPEL Service Manual Table of Contents continued
16. ate part listed in Appendix C This module is located directly underneath the power entry module in 115 VAC generators Model and on the far right in 230 VAC generators Models GEN22 and GEN32 For a functional description see section 2 2 Verification 1 fuses used in the generator are time delayed and therefore may appear closed when they are actually open Remove the power cord and test each fuse with an ohm meter to ensure they are closed 2 Inthe 115 VAC generators test the three fuses in the fuse block via the access holes Also test the two fuses located in the fuse drawer in the lower portion of the power entry module 3 Inthe 230 VAC generators test the six fuses in the fuse block via the access holes 4 Refer to the wiring diagram in Appendix B and verify that the primary wiring is intact by re inserting the power cord switching the generator on and testing for the appropriate line voltages via the access holes in the top of the fuse block 5 voltage is detected and all the fusing and wiring is intact replace the power switch on the front panel Replacement 1 For all replacements disconnect the line cord and refer to Appendix C for the replacement part number 2 replace fuses lift the applicable hinged section of the fuse block and remove the fuse 3 Toreplace an individual fuse housing or terminal block unscrew the two stops at the ends of the fuse rail Slide the fuse housing or t
17. ator on and energize the hand piece at full power for several seconds The voltage wave form at TP10 should between to 1 22 peak to peak at frequency between 54 000 Hz to 55 500 Hz and approximately sinusoidal This spread in voltage and frequency is caused by variations in the type of blade attached to the hand piece and the hand piece itself Therefore if the voltage or frequency is not within range re test with a different hand piece and blade before replacing the generator PCB Chapter 6 Detailed Diagnostics continued 6 3 6 Replacement Generator PCB continued 1 Remove the line cord and all cabling leading to the generator PCB 2 Remove the two phillips head screws holding the processor in the service configuration and the six screws securing the generator PCB to the aluminum bracket 3 Remove the PCB and replace it with the appropriate part listed in Appendix C NOTE Once the generator PCB is removed remove and save the four standoffs which support the microprocessor PCB 6 3 7 The keyboard PCB is mounted to the front panel assembly and receives inputs from J6 and J5 on the generator Keyboard PCB the Foot Switch and Hand Piece For a functional description see section 2 2 Interlock PCB With the exception of the functionality of the interlock circuit all other keyboard functions have been tested in sections 5 2 and 5 3 In these sections all of the buttons and LEDs were exercised If certain buttons
18. board to the front panel Remove the PCB and replace it with the appropriate part listed in Appendix C 40111504 95 4 5 god 1055920140121 2 UNDER MICROPROCESSOR v sonsoubeig pejie eq 9 5 6 3 8 Chapter 6 Detailed Diagnostics continued The microprocessor PCB is screwed to four stand offs on top of the generator PCB It is connected to J2 and J4 on Microprocessor the generator PCB For a functional description see section 2 2 PCB 6 3 9 Liquid Crystal Display The simplest way to determine if the microprocessor PCB is working is by substitution However the following tests may be performed if preferred In order to test the microprocessor PCB it must be re oriented in the service position If this is not already done with the line cord removed remove the four screws securing the microprocessor PCB and use two of the screws to re attach the board in the inverted position Complete the following tests 1 Verify proper DC voltages at P4 With the Set for VDC connect the common lead to on the microprocessor and verify the 5 VDC 500 Mv on the pads marked 5V at location J1 If the measured voltages are not within these ranges check the two wire cable leading to the generator PCB and re check the DC voltage regulation circuits on the generator PCB see section 6 3 6 2 Verify socket location U4 is populated and that the IC is inserted fully
19. coagulation where the side of the blade is used to compress and tamponade the vessel while a short duration of full power seals it Chapter 2 Principles of Operation The System consists of three major components a Generator a Hand Piece and a Foot Switch The Generator produces a 55 kilohertz electric signal which is transmitted via a coaxial cable to the Hand Piece which then converts the electrical signal into ultrasonic mechanical motion A more detailed explanation follows The Hand Piece houses three major components that generate amplify and deliver ultrasonic energy to tissues When each component is attached to the other and tuned to 55 kilohertz an acoustic drive train is formed The acoustic system or acoustic drive train consists of three components e Acoustic Transducer converts the electrical energy into motion The transducer consists of four piezoelectric elements held in compression between two aluminum end bells When an AC wave form is applied to the transducer the ceramics expand and contract to produce longitudinal motion Acoustic Mount attaches the acoustic drive train to the Hand Piece The mount also provides mechanical amplification of the longitudinal motion e Instrument Blade couples the ultrasonic energy to the tissue and amplifies motion In a laparoscopic configuration the blade is elongated by means of a Laparosonic Extension This extension allows the ultrasonic energy to propagate from the Ha
20. ee section 6 3 6 to replace the generator PCB A higher than normal voltage was detected on the output of the switching power supply circuitry located on the generator PCB This may be caused by either electrical interference from other devices in the O R or by a faulty generator PCB Verify that the Generator is not within one foot of any other equipment especially electrosurgical devices If the problem persists replace the generator PCB see section 6 3 6 The cabling leading from the generator PCB to the keyboard became disconnected or is intermittent The microprocessor PCB is unable to match the selected line rate with the actual frequency of the line voltage Verify that the Generator is configured for the appropriate line rate see section 4 3 If the problem persists there is typically significant noise on the AC source NOTE Whenever error numbers 7 8 9 or 11 are added to the error history a SYSTEM ERROR is displayed NOTE The error history is erased whenever the validation sequence is entered from this second page of the service mode The validation sequence is described in section 4 3 If a problem with the ULTRACISION System is still unidentified after performing the steps listed above continue the diagnosis with the Extended Functional Test If a problem exists with the system and resolution cannot be obtained through the Trouble Shooting Guide section 5 1 and the Diagnostic Service Mode section 5 2 proceed w
21. erator is unable to resonate the blade Since the previous sections of this manual have already identified the typical causes of this failure blade failure blade attachment torque Hand Piece failure broken cabling inside the generator it is most likely that the LC filter network in the generator PCB is faulty See section 6 3 6 and replace the generator PCB 4 Activate the instrument blade by pressing the FULL pedal Press the blade into wood cardboard or wax and observe that the blade cuts While holding the FULL pedal down increase the pressure on the blade until the blade is no longer able to resonate This is indicated by a continuous tone and LED illumination While still holding the pedal down remove the blade from the cutting material and verify that the blade again starts to resonate This is indicated by the normal LED flashing and a non continuous tone This regaining of resonance is referred to as lock recovery NOTE A warm Hand Piece instrument blade may not regain resonance If this test fails allow the Hand Piece to cool for several minutes and cool the blade tip with water Since the previous sections of this manual have already identified the typical causes of failure to cut or lock recover it is most likely that the phase lock loop circuitry in the generator PCB is faulty See section 6 3 6 and replace the generator PCB If a problem with the system is still unidentified after performing these four steps proceed to the
22. erature Relative Humidity 20 C to 65 C 10 to 100 Intermittent Operation with a duty cycle of 30 min ON 30 min OFF APPENDIX Diagnostic Service Mode Flow Diagram OPERATIONAL FLOW LCD messages are in BOLD type POWER ON Crc test blank LCD validation key sequence followed by Rev X xx followed by Self Test Line Rate test Interrupt tests EEPROM tests 2 beeps for pass Self tests Pass Self Tests Fail with UP and DOWN keys at POWER ON Self Tests Pass with UP and DOWN keys at POWER ON Saved Level 3 shown Level 3 UP and DOWN keys change level Level 1 200 mA X xx ENGLISH Level 2 250 mA X xx ITALIANO Level 3 300 mA X xx ESPANOL Level 4 350 mA X xx FRANCAIS Level 5 400 mA X xx DEUTSCH SAVE key stores level READY LED ON UP key selects new language SAVE key saves language VAR foot switch or ring switch FULL foot switch Switches Released STANDBY key Level 3 Left foot or ring CRC xxx yyHz En c switch VAR LED flashes n error number c error code Slow beep EEPROM DOWN key scrolls errors n z Change Level 5 right foot switch UP key toggles line rate 6 FULL LED flashes fast beep Requires Validation sequence required validation READY LED OFF all keys for checksum or line rate sequence amp locked out error Power cycle STANDBY key STANDBY ccc vvv fffff m Calibration Mode No Hand Piece Power
23. erminal block off the rail and remove the attached wires 4 Toreplace the front panel power switch remove the four terminals squeeze the retaining tabs on the switch and push it out through the front panel 6 3 3 Compressor 6 3 4 Low Voltage Transformer Chapter 6 Detailed Diagnostics continued The compressor is screwed to the base plate on rubber feet in the back portion of the Generator It runs on line voltage supplied through the fusing and distribution module When the front panel switch is turned on the cooling fins on the compressor quickly become hot and the compressor vibrates this is normal and is not cause for replacement For a functional description see section 2 2 With power on remove the Hand Piece air connector A steady flow of air should be detectable If available a pressure gauge can be used to measure the air pressure which should be greater than or equal to 4 5 pounds per square inch Reconnect the hand piece air connection or plug If power is available to the compressor and there is no or reduced air flow check the hose leading from the compressor for any perforations or restrictions Also check the plastic filter housing and filter located on the side of the compressor for any blockage before replacing the compressor models HPO50 HPO51 HITUV HPTUV NOTE The compressor filter located in the plastic housing should be removed and cleaned at least once every two years To remove the filter unsc
24. ers are listed at the beginning of this section Electrical interference from hospital wall power Refer to Chapter 6 or call for service or other equipment in O R disturbs Generator Symptom End of instrument blade detaches leaving the blade extension in the Hand Piece Blade was attached to the Hand Piece with Push Standby Button Remove and discard the blade extender excessive force from the Hand Piece Attach a new instrument blade to the Hand Piece Material between the blade and the Hand Piece Push Standby Button Remove and discard the blade base has jammed the connection from the Hand Piece Clean the end of the blade mount surface on the Hand Piece with alcohol and sterile gauze Do not immerse the Hand Piece in liquid Symptom READY light is not illuminated Probable cause Corrective Action Generator is in STANDBY mode Push the Standby Button to enter READY mode Foot Switch is depressed while the Release the Foot Switch until the Generator self test Generator is turned on and goes is completed and the READY light comes on through self test Hand Piece is defective Replace the Hand Piece Generator is defective Turn Generator power off Refer to Section 6 for a module by module diagnosis or call for service 5 1 Trouble Chapter 5 Upper Level Diagnostics continued Symptom The Generator display reads STOP CHECK HAND TURN OFF THEN ON and Generator Shooting Guide emits lo
25. he READY LED to go out If the READY LED does not go out while pressing either foot pedal inspect the cabling leading from the keyboard to the Foot Switch connector on the back of the Generator see section 6 3 7 If the cabling appears intact replace the Foot Switch cable and re test see section 6 3 10 If the problem persists replace the keyboard PCB see section 6 3 7 5 2 Diagnostic Software continued 5 3 Extended Functional Test Chapter 5 Upper Level Diagnostics continued 8 Return to the second page of the service mode and review the error history list as follows Turn the Generator off Access page one of the service mode by holding in the Increase and Decrease buttons at power up Press the Standby Button to access page two CRC 55947 should now be displayed followed by the line rate and error history The numbers in the far right of the display separated by a indicate the number and type of errors Press the Decrease Button to scroll through the last ten errors An explanation of the error types follows Error No 1 6 7 10 11 Description Not used and should never appear The check sum stored in memory does not agree with the calculated value This would be caused by an unreliable microprocessor PCB See section 6 3 8 to replace the microprocessor The frequency control circuit on the generator PCB is not oscillating See section 6 3 2 to check for a blown fuse If all the fuses are intact s
26. ing normal operating parameters Relative current Between 40 and 50 mA Relative DC voltage Between 15 and 25 v Output frequency Between 50 000 Hz and 60 000 Hz Selected Power level Between and 5 Operating Mode 6 Refer to the value in the lower left hand corner of the function boxes in Appendix A Possible Problems e Display voltage or current is low lt 15 or lt 40 respectively The high voltage AC is not reaching the generator PCB or the generator PCB s switching power supply is not working Verify that the high voltage AC is at the generator PCB see section 6 3 5 If no AC is present check the high voltage wiring transformer and fusing see sections 6 3 5 and 6 3 2 If AC is present replace the generator PCB see section 6 3 6 e Display voltage or current is high gt 25 or gt 50 respectively The power regulation circuit on the generator PCB is not functioning properly See section 6 3 6 and replace the PCB e Display frequency is high or low gt 60 000 or lt 50 000 The frequency control circuit on the generator PCB is not functioning properly See section 6 3 6 and replace the PCB Verify that the READY LED is now illuminated Proceed to the next step If the READY LED does not come on either the LED itself or the interlock circuitry on the keyboard PCB is faulty In either case replace the keyboard and re test see section 6 3 7 Verify that pushing either pedal on the Foot Switch causes t
27. ing tested permanently assembled connector no further testing can be performed Replace the hand piece Hand Piece Models HP052 HP053 H2TUV H3TUV With the Hand Piece unplugged from the Generator For Models HP052 and 053 verify continuity between pin 1 and the tip of the blade see Figure 3 for pin location For Models H2TUV and H3TUV verify continuity betwen pin 2 and the tip of the blade see Figure 3 for pin location There is no method for repairing these hand pieces If defective these hand pieces must be replaced Access to the internal generator modules requires disassembly of the Generator Remove the power cord and the six phillips head machine screws from the bottom of the Generator enclosure and remove the top portion of the enclosure shell The internal generator modules are now exposed Additional disassembly may be necessary depending upon the level of testing required Verify that the Hand Piece Foot Switch and instrument blade are appropriately attached to the Generator Proceed through the following sections until the problem module is identified Chapter 6 Detailed Diagnostics Figure Hand Descriptions Models 5 51 HPTUV H1TUV GRD n DRAIN POWER BROWN DRAIN RETURN BLACK GRD DRAIN 2 GRD DRAIN 2 RETURN 30 5 BLACK BROWN NO NO CONNECTION e CONNECTION CONNECTION 4 e SENSE SENSE ORANGE ORANGE DO
28. ists with the system and resolution cannot be obtained through the Trouble Shooting Guide section 5 1 enter the diagnostic service mode as described below and diagrammed in Appendix A Typically once a problem has been identified it requires further diagnosis inside the Generator To perform this detailed diagnosis refer to section 6 NOTE It is important to read all of Chapter 6 which details disassembly test equipment and warnings prior to performing detailed diagnosis of any internal module Follow steps 1 through 5 in section 3 2 to prepare the Generator for power up Prior to turning the Generator on press and hold the Increase and Decrease buttons simultaneously with one hand While holding these two buttons in turn the Generator power on and verify the following 1 Verify that the green power LED is illuminated Proceed to the next step 5 2 Diagnostic Software continued Chapter 5 Upper Level Diagnostics continued The green power LED located on the keyboard PCB is driven from the 5 VDC supply on the generator PCB The most likely mode of failure is no AC voltage leading to the Generator PCB If no other generator activity is noticeable i e air compressor noise other LEDs or displayed information check the wall outlet and the first two modules of the primary AC circuit as described in Chapter 6 If other generator activity is noticed verify that low voltage AC is reaching the generator card see section 6 3 4 a
29. ith the following steps to be performed at power up Again it is important to read all of Chapter 6 which details disassembly test equipment and warnings prior to performing detailed diagnosis of any internal module CAUTION During this testing the instrument blade will become active Do not touch the blade 1 Turn the Generator on as described in steps 1 through 8 in section 3 2 2 Ifnot already at Level 1 press the Decrease Button until LEVEL 1 is displayed 5 3 Extended Functional Test continued Chapter 5 Upper Level Diagnostics continued 3 Activate the instrument blade by pressing the foot switch pedal labeled VAR Verify that the VAR LED flashes and that the Generator Audio Annunciator beeps Activate the instrument blade by pressing the foot switch pedal labeled FULL Verify that the FULL LED flashes and that the annunciator beeps If the LED does not light the keyboard PCB is faulty See section 6 3 7 and replace the keyboard If the annunciator does not beep check the cabling leading from the generator PCB to the volume control pot on the front panel Also check the cabling leading from the annunciator to the keyboard If the cabling appears intact either the drive circuitry in the generator PCB or the keyboard PCB is faulty Sequentially replace these boards and re test see section 6 3 6 and 6 3 7 If the problem persists replace the annunciator If the LED and annunciator stay on continuously the Gen
30. l Diagnostics This section discusses the most common problem areas and how to resolve these problems primarily through modifications to usage and swapping of blades and hand pieces This section is a good place to start once a problem has been identified The testing sequence should proceed as follows Perform the basic functional test as described in section 3 3 Starting with section 5 1 Trouble Shooting Guide work through the sub sections 5 2 and 5 3 until the problem is identified 3 Ifthe problem then is still unidentified refer to Chapter 6 for a module by module diagnosis The following section lists the probable causes and corrective actions for error conditions that may occur during operation of the ULTRACISION HARMONIC SCALPEL Generator If the symptoms specified in this section are inappropriate or the corrective actions are insufficient consult a qualified hospital technician or call one of the following numbers for service 1 800 USE ENDO U S calls e 1 513 483 8901 International calls English speaking only 5 1 Trouble Shooting Guide continued Chapter 5 Upper Level Diagnostics continued Symptom The instrument blade fails to cut or coagulate or has less power than usual and the Generator emits intermittent beeps when the Hand Piece is activated Probable cause Instrument blade is not attached securely to the Hand Piece Symptom Corrective Action After pushing the Standby Button
31. municated with the microprocessor via the keyboard interlock and generator PCB POWER ENTRY MODULE FILTER FUSING amp AC DISTRIBUTION COM PRESSOR HIGH VOLTAGE TRANSFORMER LOW VOLTAGE TRANSFORMER GENERATOR PCB MICROPROCESSOR PCB AIR models 50 51 HPTUV amp H1TUV KEYBOARD INTERLOCK lt 55 2 uomejedo Jo sejdiouug 5 Chapter 3 Basic Operation 3 1 Controls Indicators and Connections ULTRACISIO GENERATOR ETHICON ENDO SURGERY 1 2 97257 9 6 STANDBY VARIABLE 7 13 12 11 10 9 8 Note This illustration shows Generator Model GENO1 In Model 2 the position of the air and electrical connectors is reversed Component Description 1 Power Switch Controls the electrical power for the entire Generator Push the switch up to turn power on push the switch down to turn power off 2 Green Power Indicator Light The light is illuminated when the Generator power is on 3 20 Character Liquid Crystal In READY mode this display indicates the selected variable power level When the Hand Piece Display is energized this display indicates the active power level STANDBY is displayed when the Generator is in STANDBY mode When the Generator power is first turned
32. n and verify that a positive fixed width pulse approximately 1 msec wide and synchronized to the line frequency exists If higher or lower voltages are noticed either this portion of the generator PCB is bad or the microprocessor PCB is unable to regulate the DC voltage If this is the case re test the generator PCB with a substitute microprocessor PCB before replacing this PCB If the pulse at TP16 is not synchronous with the line rate replace the generator PCB 2 Verify that the low voltage DC supplies are regulating properly With power removed from the generator clip the common lead of the DVM set for VDC to common circuit ground Sequentially clip the other lead to each of the test points listed below turn the generator power on and verify the appropriate voltages 1 5 VDC 20 mV TP2 412 65 VDC 250 mV NOTE TP2 may be slightly difficult to access Even with the microprocessor PCB in the service position TP2 is still located under the microprocessor PCB If higher or lower voltages are noticed and the output of the low voltage transformer has been verified see section 6 3 4 replace the generator PCB 3 Verify that the ultrasonic drive circuit is functioning properly Caution During this testing the instrument blade will become active Do not touch the blade With the power removed from the Generator clip the oscilloscope set for 2 volts at 55 000 Hz to TP11 Apply power switch the gener
33. nd Piece to the instrument blade with minimal loss The Generator consists of ten modules that drive and cool the Hand Piece The Generator converts the AC line voltage to a controlled DC level The DC level is then remodulated at the resonant frequency of the Hand Piece The remodulated signal is then filtered and delivered to the Hand Piece where it resonates the acoustic train A more detailed description follows e Power Entry Filter accepts a standard hospital grade utility cord It provides susceptibility filtering from the external environment as well as suppressing electromagnetic emissions produced by the Generator that could be conducted back through the power cord Fusing and Distribution Components provide line voltage to a cooling compressor a high voltage transformer and a low voltage transformer Fusing protects these assemblies and others from overload conditions Cooling Compressor provides cooling air via a silicone hose to Hand Piece models HP050 51 HPTUV and HITUV Generator provides cooling to models HP050 HP051 HPTUV and H1TUV only 2 2 Foot Switch continued Chapter 2 Principles of Operation continued Low Voltage Transformer produces low voltage AC that is later rectified filtered and regulated to produce 5 VDC 12 VDC and 12 VDC It also provides an important safety barrier The voltage generated on the secondary of the transformer is isolated i e
34. nd that the generator PCB is producing 5 VDC see section 6 3 6 For generators utilizing Hand Piece Models 050 HP051 HPTUV and HITUV verify that the compressor is running by checking for vibrational noise from within the Generator and the release of cooling air Proceed to the next step The most likely mode of compressor failure is no AC voltage at the compressor Verify that AC voltage is being distributed from the fuses to the compressor see Chapter 6 For Hand Piece Models HP050 HP051 HPTUV and H1TUV If the compressor is vibrating but no cooling air is being exhausted from the Hand Piece check the air line in the Generator the air inlet filter located on the side of the compressor and the Hand Piece for blockage or rupture Verify that the first page of the service mode is accessed This is indicated by the display reading the preset language followed by software revision 1 35 Proceed to the next step Several modes of failure could exist at this point as follows e SYSTEM ERROR is displayed This condition would most likely exist if the generator PCB is unable to regulate the DC voltage used in driving the hand piece This can be caused by either a faulty generator or microprocessor PCB Refer to section 6 3 6 to replace the generator PCB and re test If re testing fails refer to section 6 3 8 to replace the microprocessor PCB e CRC Five digit number followed by the line rate is displayed This indicates that
35. ng and short beeps continued 5 2 Diagnostic Software Probable cause Corrective Action Hand Piece connection to Generator Turn Generator Power Switch off check to see that electrical is faulty Hand Piece connector is securely attached to the Generator then turn the Power Switch back on Symptom The Generator display reads STOP SYSTEM ERROR TURN OFF THEN ON and Generator emits bursts of long and short beeps Probable cause Corrective Action Problem with hospital line voltage power source Turn Generator Power Switch off and then on again disturbed Generator or the Generator is faulty Symptom Liquid crystal display on Generator is difficult to read Probable cause Corrective Action Change in lighting or Generator position Readjust display control on Generator Symptom Air connector or Plug on Hand Piece cable will not fit into air connector on Generator Probable cause Corrective Action Silver locking button on Generator air connector Unlock connector by pushing the silver Release Button is in locked position Symptom High pitched screeching sound emitted from Hand Piece Probable cause Corrective Action Instrument blade is not fully seated on Re tourque the instrument blade with an alternate torque Hand Piece blade mount blade wrench and or clean the threaded Hand Piece blade mount with an alcohol 4x4 The Generator contains a built in diagnostic mode accessible to service personnel If a problem ex
36. ntact with tissue drapes surgical gowns or other unintended sites after activation Plug the line cord into a grounded receptacle Model GENO1 115 Vac 60 Hz Model GEN32 230 Vac 50 Hz Note Do Not Connect the Generator To An Ungrounded Outlet Connect the Foot Switch to the rear panel of the Generator Align the red dot on the Foot Switch 4 pin connector with the red dot 4 pin connector on the lower left side of the Generator back panel 3 2 Instrument Preparation and Hand Piece Attachment continued 3 3 System Test Chapter 3 Basic Operation continued Attach the sterile ULTRACISION HARMONIC SCALPEL Hand Piece following the appropriate package insert instructions Note Refer to specific instrument package inserts for use of the Generator during surgical cases Attach an instrument blade to the Hand Piece following the instructions listed in the instrument s package insert Turn Generator power on If the Hand Piece has been steam sterilized autoclave or flash wait 5 minutes with the Hand Piece attached to the Generator and the Generator on to allow the Hand Piece to dry STANDBY Mode is recommended during this period of time If the Generator is in STANDBY Mode press the Standby Button to return it to READY Mode If the generator is not already at power level 5 select level 5 by using the Increase Button The ULTRACISION HARMONIC SCALPEL System is now ready for testing After performing the very
37. olding these two buttons in turn the Generator power on Once the power light comes on release the two buttons The preset language and software revision 1 35 should now be displayed This indicates that the first page of the service mode is accessed If you are unable to access this first page of the service mode refer to section 5 2 In the first page of the service mode different languages can be displayed by pressing the Increase Button Once the desired language is located press the Save Button and turn the Generator off display messages will now be in the newly selected language Enter the first page of the service mode as described above Press the Standby Button to access the second page of the service mode In this second page the display will indicate the line rate currently selected The line rate may be toggled between 50 Hz and 60 Hz by pressing the Increase Button A validation sequence is required to change the line rate In addition to updating the line rate the memory check sum is updated and the error history is erased This is explained in more detail in section 5 2 Before entering the validation sequence verify that the number following the letters CRC is 55947 If this is not the case do not continue with the validation see section 5 2 Once 55947 15 verified enter Save Increase Decrease Save and Standby sequentially The Generator is now configured to operate at the selected line rate Chapter 5 Upper Leve
38. on the Generator manually tighten the instrument onto the Hand Piece finger tight only Use the blade wrench to secure the instrument completely to the Hand Piece by turning the wrench clockwise until a snap is heard The instrument blade fails to cut or coagulate or has less power than usual and the Generator emits a steady tone when the Hand Piece is activated Probable cause Contact with tissue or fluid is excessive and is preventing the instrument blade from resonating Tissue fragment or coagulum is clinging to the instrument blade and preventing it from resonating Inside of Hand Piece is still warm from steam or flash sterilization For Models HP050 HP051 HITUV HPTUV only Inside of Hand Piece is still damp from steam or flash sterilization Instrument blade is not attached securely to the Hand Piece Instrument blade has visible or invisible defect which prevents it from resonating For Models 050 HP051 HITUV HPTUV only Hand Piece failure caused by immersion in liquid damage to power cable or end of useful life Generator failure Corrective Action Withdraw the instrument from tissue or fluid and use less pressure when pushing against tissue Activate the Hand Piece for 1 or 2 seconds with the instrument in air to remove tissue etc If this fails allow the blade to cool and then wipe it with a sterile cloth Handle the instrument with caution as it may become hot during operation in air
39. or LEDs do not work sequentially re test the keyboard with a substitute foot switch and microprocessor PCB before replacing it Caution During this testing the instrument blade will have some minimal activity Verify that the interlock portion of this PCB is working properly as follows 1 Access the first page of the software diagnostic mode as described in section 5 2 and diagrammed in Appendix A 2 Press the Standby Button twice to access the third page of the service mode Press the blade firmly into wax wood or cardboard and verify that the reported relative voltage increases in excess of 100 whenever a foot pedal is pressed 3 fno variation is noticed it indicates that the interlock is either not releasing or never engaging In either case replace the keyboard PCB NOTE Before replacing the keyboard check the continuity in the 10 conductor ribbon cable leading from the generator PCB to the keyboard Replacement 1 Remove the line cord and un screw the two phillips head screws which hold the front panel L brackets to the base plate 2 Loosen the two phillips head screws that hold the front panel to the generator and remove the front panel by lifting it up and away from the generator 3 Remove the two nuts and lock washers bolting the audio annunciator to the front panel and de solder the three wires leading to the foot switch connector on the rear panel 4 Remove the seven phillips head screws securing the key
40. or and must therefore be tested together as a unit as follows 1 Remove the foot switch connector from the back panel of the generator and orient it so that the pins are visible and the red keying dot is at 12 00 Using an insulated clip attach the DVM to each internal pin and look for resistances 10 to the connector shell under the following conditions Resistance to Shell PIN No pedals Var pedal Full pedal location pressed pressed pressed 2 00 lt 1 ohm lt 1 ohm lt 1 ohm 5 00 200K 100K 200K 8 00 200K 100K 100K 11 00 200K 200K 100K If the above values are not correct replace the foot switch assembly If the above resistances are correct and the foot switch does not perform properly check the wiring leading from the foot switch connector on the back panel to the keyboard PCB If the wiring appears intact there is a faulty keyboard PCB See section 6 3 7 to replace the keyboard 7 1 Generator 7 2 Hand Piece 7 3 Foot Switch 7 4 Power Cord 7 5 Transport and Storage 7 6 Mode of Operation Chapter 7 Specifications This section details the physical and electrical specifications for the ULTRACISION HARMONIC SCALPEL System Frequency Dimensions Weight Power Required Fusing Air Pressure Air Flow Ventilation Defibrillation Recovery Time Length Connectors Sterilization Switch Voltage Cable Model Model GEN32 55 5 Khz Output 14 Wide x 8 High x
41. ot or the microprocessor PCB is faulty Verify that the cabling is intact and if the problem persists replace the microprocessor and re test see sections 6 3 8 and 6 3 9 If there is information on the display but it appears in a foreign language press the Increase Button to review the available languages Once the desired language is located press Save to select it see section 4 2 5 2 Diagnostic Software continued Chapter 5 Upper Level Diagnostics continued e Random characters Random or nonsense characters usually indicate a faulty microprocessor PCB Replace the microprocessor and re test see section 6 3 8 In both cases above if the display still does not work properly refer to section 6 3 9 and replace it Press the Standby Button and advance to the second page of the service mode Verify that CRC 55947 and the proper line rate are displayed Proceed to the next step If 55947 is not displayed cycle the Generator power and re attempt this test If the problem persists replace the microprocessor PCB see section 6 3 8 If the line rate is inappropriate refer to section 4 3 to change it Press the Standby Button and advance to the third page of the service mode In this page the relative current voltage frequency selected power level and mode are displayed Verify that these values are within the normal operating parameters Proceed to the next step From left to right the display should indicate the follow
42. rew the wing nut securing the plastic housing to the compressor Replacement 1 Disconnect the line cord and unscrew the four phillips head machine screws from the base plate 2 Disconnect the two primary wires from the fusing module and remove the grounding wire from the base plate 3 With pliers unscrew the hose fitting Remove the compressor and replace with the appropriate part listed in Appendix C The low voltage transformer is screwed to the left side of the base plate underneath the generator PCB and receives line voltage from the fusing and distribution module For a functional description see section 2 2 The output of this transformer terminates at J1 on the generator PCB Proceed through the following steps to test for the proper output voltage 1 Remove the power cord Remove the plug at J1 and clip the digital voltmeter to locations 3 white wire and 4 green wire NOTE Location is next to the filled keying location Warning Stay clear of locations 7 and 8 they are high voltage 250 to 260 VAC 2 Supply power and turn the front panel switch With nominal line voltage the open circuit voltage between locations 3 and 4 should be between 33 and 35 volts AC 3 Repeat this process and verify the voltage between locations 2 yellow wire and 4 green wire is between 16 and 17 volts AC 4 Repeat this process and verify the voltage between locations 5 red wire and 6 black wire is between 9 5 and 10 5 vol
43. the second page of the service mode has been accessed When the software detects a memory error during self test and the service mode is initiated the software jumps to the second page of the service mode If the number following the CRC is 55947 and the line rate is appropriate see section 4 3 to change the line rate enter the following software validation sequence Press sequentially Save Increase Decrease Save Standby If this problem persists and 55947 is not the number following CRC replace the microprocessor PCB see section 6 3 8 LEVEL typical message during normal power up is displayed This will typically happen when the Increase and Decrease buttons were not held in during power up Turn the Generator off and re attempt to access the service mode This will also occur if the Foot Switch is activated during power up If the problem still exists it usually indicates that the keyboard PCB is faulty Check all the cabling leading from and to the keyboard If it appears intact replace the keyboard PCB see section 6 3 7 A less likely cause is a faulty generator or microprocessor PCB If the problem persists try sequentially replacing these PCBs see sections 6 3 6 and 6 3 8 e Blank display Typically when the display appears blank the problem can be fixed by turning the viewing angle adjustment pot on the front of the generator If this fails to solve the problem the cabling leading to the display and adjustment p
44. ts AC 5 Remove the power cord and replace the J1 plug If power is available to the transformer and there is no output voltage remove the line cord refer to the wiring diagram Appendix B and inspect the wiring leading to the transformer If the wiring appears intact replace the transformer 6 3 4 Low Voltage Transformer continued 6 3 5 High Voltage Transformer 6 3 6 Generator PCB Chapter 6 Detailed Diagnostics continued Replacement 1 Remove the line cord the microprocessor PCB see section 6 3 8 and the generator PCB see section 6 3 6 2 De solder the primary and secondary connections and remove the two phillips head screws securing the transformer to the base plate Remove the transformer and replace it with the appropriate part listed in Appendix C The high voltage transformer is bolted to the base plate underneath the generator PCB to the right of the low voltage transformer and receives line voltage from the fusing distribution module For a functional description see section 2 2 The output of this transformer also terminates at J1 on the generator PCB Proceed through the following steps to test for the proper output voltage 1 Remove the power cord Remove the plug at J1 and clip the digital voltmeter to locations 7 blue wire and 8 brown wire Note Location is next to the filled keying location Warning Take the appropriate precautions locations 7 and 8 are high voltage 250 to 26
45. two of the screws to re attach the board in the inverted position as shown in figure 4 The following steps will test the four major functional areas of the generator PCB During these tests refer to the generator PCB schematic found in Appendix B for a more in depth understanding Chapter 6 Detailed Diagnostics continued 6 3 6 the tests below are made in reference to circuit ground which is found at TP4 TP10 TP15 This common Generator PCB circuit ground is NOT earth ground and is not intended to be connected to earth ground It is therefore important to continued break the earth ground connection to the generator before connecting any test equipment to circuit ground 1 Verify the processor controlled switching DC supply is regulating properly With power removed from the generator clip the leads of the DVM set for VDC to TP6 and common ground TP4 TP10 or TP15 Apply power switch the generator on and verify that TP6 is between 15 and 25 VDC WARNING Higher voltages indicate improper supply regulations remove power quickly if the voltage exceeds 100 VDC Even after power is removed hazardous charge may be retained on the power supply capacitors If continued testing is desired disable this supply by removing the fuse s to the high voltage transformer With power removed from the generator clip the oscilloscope set for a 5 volt pulse at 60 to 50 Hz to TP16 Apply power switch the generator o
46. vel 10 Standby Button This button toggles between STANDBY and READY mode Push this button once to enter STANDBY mode In STANDBY mode all power is removed from the Hand Piece The Increase Decrease and Save buttons are disabled as is the Foot Switch Use the STANDBY mode when replacing instrument blades 11 Release Button Push this button to detach the Hand Piece cord connection from the Cooling Air Source Connector on the Generator 12 Cooling Air Source Refer to the appropriate Hand Piece package insert 13 Electrical Receptacle Delivers the energy from the Generator to the Hand Piece Audio Annunciator The annunciator beeps to indicate instrument activity or to indicate error conditions During normal activation the annunciator beeps on and off when either foot pedal is pressed A slower beep indicates that LEVEL 1 through LEVEL 4 is activated and a faster beep indicates that LEVEL 5 is activated If the generator does not energize the instrument the annunciator will emit a continuous beep when either pedal is pressed 3 2 Instrument Preparation and Hand Piece Attachment Instrument Preparation and Hand Piece Attachment Ensure that the Generator Power Switch is off during instrument preparation WARNING To avoid injury the activatedULTRACISION HARMONIC SCALPEL instrument should not be in contact with drapes or other flammable materials During prolonged activation the instrument blades may become hot Avoid unintended blade co
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