Intelect Legend Series Service Manual
Contents
1. AND SLINN 30 NO G3TWISNI SININOdNOD 4 NYJ NY3 d SN Sd9 NYVH 80184 Dann 2f8 1N09 d SN Sd2 NuvH 0184 ASSY GOW WILS 3AVM ILIY 89d SN YMd 1N09 d SN Sd9 NU 90182 IT Sdd NONOTOS Aasia 091 20022 HUNN G8 01 08 3103 Nav 90282 O S Ldf TET NACH 9 OND MSENIN d SN g Sd Neu 87192 VIZE NO 10 d d T1 3 ds 968 Z Taba GE offe Geesse d K t YMd d SN Sd NYWH P7184 VO Qu HM Aa ANM 40 gd YOLOINNOD ia Ko Intelect Legend Stim 37 Intelect Legend Series Service Manual TM Innovation starts here CHATTANOOGA GROUP INC Calibration Procedures These calibration 1 procedures apply to calibration of the Intelect Legend Ultrasound and Intelect Legend Stim units Following it is a calibration procedure for the ultrasound applicators Intelect Legend Stim Calibration Procedure Equipment Required Oscilloscope scope Probe X10 2 510 ohm Loads A Unit Startup and Fan Testing 1 Plug the 510 ohm loads into the output jacks With the unit properly plugged into its power supply turn the unit on The unit should beep once time and output screen should display and the fan should be blowing inward Check for excessive fan noise B Stimulator Test 1 IFC Connect scope probe across load on Channel 1 Press IFC and heading of menu should display Ch1 2 IFC Press Up Intensity arrow to increase O2. LI igital 22 23 24 25 26 co 28 30 Q amp CO CO Oj Gh IC Q W O J2 J3 si i CHATTANOOGA GROUP INC Calibration Bi Directional Read Write OR Ground 5V Digital During Read 12V Digital During Write Innovation starts here 20 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Stim Board Below is a simple drawing showing the approximate locations of the connectors and the position of pin 1 on each connector Jumper for Ch 1 amp 2 Jumper for Ch 3 amp 4 ES e 9 o 2 eee PIN 1 Stim Board 1 E 1 2 l e 1 2 1 Below are tables showing the signals for each connector on the Control Board The columns are arranged as pin number signal description type of signal and any other notable information about the signal Note that the jumper on JP2 MUST be positioned for channels 1 amp 2 for the Stim unit to operate Stim Board es NEEN Tye j Dual Port RAM Output Digital Active Low Interrupt Grund 5 JP1 Address Line 2 Grund Address Line 3 D Dual Port RAM Input Digital nr Input Digital Ground Innovation starts here 21 Intelect Legend Series Service Manual zh O 1 CHATTANOOGA GROUP INC Input Enable 45 Ground
3. 16 Address Line 7 Input Digital Dual Port RAM Chip Input Digital Active Low Det Ave tow ZS Enable Board 2 Input 21 Gound LI Digital Stim Channel 1 Input Digital Power Down 24 No Connection 25 Gound Il 26 StimDataLineO O Z 27 MicroCurrent Probe Output Digital Bi Directional 29 Gound Il 31 Grund 33 Grund Il Stim Channel 2 Input Digital Digital 37 L round O S 38 StimDataline j BiDiretiona 1 Digital Active Low JP2 Stim Board Header for Jumper Signal Name Typ Channel 3 amp 4 Select Input Jumper Pin 2 to Here if this board is for Ch 3 amp 4 in a 4 Ch Unit Innovation starts here TM 22 Intelect Legend Series Service Manual 1 CHATTANOOGA GROUP INC Digital Active Low 2 Dual Port RAM Chip Enable 3 Channel 1 amp 2 Select Input Jumper Pin 2 to Here if this board is for Ch 1 amp 2 in ANY Unit Stim Board Signal Name Type n Ground Ground 3 X J32 StimBord D 1 Hi Volt Probe Output Output Stim Output 0 500V Pulses i Hi Volt Probe Pot Top Not Used 3 Hi Volt Probe Pot Input Not Used Wiper Stim Board T Channel 2 Output Low Stim Output 0 100V Peak Depends on waveform No Connection OT Channel 2 Output Hi Stim Output 0 100V Peak Depends on waveform Stim Board RENE Pins SignalName Typ
4. ao PIN 1 oa Jl J2 PIN 1 Ultrasound Generator Board Below are tables showing the signals for each connector on the Control Board The columns are arranged as pin number signal description type of Signal and any other notable information about the signal Ultrasound Generator Board Ground I Ground Digital Ground LI igi Ground Bi Directional igi Ground Digital Ground J1 el EI jg S IS N O Ground 4 US Data Line 6 Bi Directional e 15 Ground TM 4 Innovation starts here 18 Intelect Legend Series Service Manual d d EE WIN CHATTANOOGA GROUP INC 16 Digital Ground No Connection Ground LI 20 Input Digital Ground Ground No Connection Ground No Connection Ir oOo 27 Grud LI No Connection J Z Ground OSS Digital Active Low Ground i Input Digital Active Low Ground isis Digital Active Low Ground US Control Circuitry Input Digital Power Down Ground US Amplifier Power Input Down Ultrasound Generator Board Signal Name T Input 18 VDC Input 18 VDC Ground Ground y Ultrasound Generator Board Signal Name Type US Generator Output Output 0 50V 1 3 MHz Sine Wave Ground Innovation starts here 19 Intelect Legend Series Service Manual N h md sech CO OIN
5. Board The Stim Board s function is to generate various output waveforms under the direction of the Control Board Due to the variety of waveforms commonly used in electrotherapy there are different waveform generators on the board all controlled by a common Digital Signal Processor DSP e The Sine Wave Generators There are two of these on each Stim Board one for channel 1 and the other for channel 2 Each is identical except for their connections to the output jacks Under control of the DSP Programmable Array Logic PAL devices generate a driving signal which is fed to an amplifier The output amplitude of the amplifier is determined by a programmable power supply also controlled by the DSP The resulting output is filtered and routed by relays to the appropriate connector on the board These same generators are used to develop the VMS or Biphasic output the Premod output the Interferential output and the Russian output e The Hi Volt Generator The Hi Volt output is only available from channel 2 of the unit Under control of the DSP timing information is generated by a PAL This is used to control the charging and discharging of a transformer The discharges are routed through relays to obtain the proper polarity and connect them to the proper output connector on the board JP2 on the Stim Board determines whether the board operates as channels 1 amp 2 or 3 amp 4 on a CPS 400 This jumper must be set for channels 1 amp 2 for th
6. Connection J OoOo o o Ground Ir Digital Ground LI j Digital Ground 24 NoConnection Innovation starts here 12 Intelect Legend Series Service Manual e ze Di m RT c o e S mg Lech Loch LA ES NEN CO COIN O wN NI NININ CHATTANOOGA GROUP INC 25 Ground TCC 26 NoCometin Z 27 Ground 28 NoCometin 29 Grund S Output Digital Active Low Ground ee 33 Ground Digital Active Low Ground E E 36 No Connection IT 37 Ground J Cd J 39 Grund 9 JP6 USContrblBord Pinf SignalName Typ Ground ee Switch 0 Switch 1 Switch 2 6 Switch4 Input DigialAcveLow Input 8 Swth6 Input DigtalAcivelow 9 Swich7 Dou sid Digital Active Low Switch 8 Switch 9 Switch 10 TM Innovation starts here 13 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Intelect Legend Stim Control Board Below is a simple drawing showing the approximate locations of the connectors and the position of pin 1 on each connector pO JP1 Legend Stim Control PNT p E J7 PN PIN ups Pi m pg PIN 1 Below are tables showing the signals for each connector on the Control Board The columns are arranged as pin number signal description type of signal and any other notable information ab
7. Group Inc devices Do not operate the unit in an environment of short wave diathermy use WARNING Federal Law restricts this device to sale by or on the order of a physician or licensed practitioner This device should be used only under the continued supervision of a physician or licensed practitioner CAUTION The ultrasound generator should be routinely checked before each use to determine that all controls function normally especially that the intensity control does properly adjust the intensity of the ultrasonic power output in a stable manner Also determine that the treatment time control does actually terminate ultrasonic power output when the timer reaches zero CAUTION Use of controls or adjustments or performance of procedures other than those specified in the unit s manual or in this service manual may result in hazardous exposure to ultrasonic energy CAUTION DO NOT use sharp objects such as a pencil point or ball point pen to operate the buttons on the control panel as damage may result WARNING Explosion hazard if used in the presence of flammable anesthetics The warning symbol for this hazard is prominently displayed on the cabinet WARNING For continued protection against fire hazard replace fuses only with ones of the same type and rating WARNING Make certain that the unit is electrically grounded by connecting only to a grounded electrical service receptacle conforming to the applicable national and local electr
8. one applicator and ultrasound gel Stim units have electrode leads and electrodes The Control Boards e The Ultrasound Control Board The signals controlling the Ultrasound Generator Board are carried through a 40 conductor cable from JP5 on the Control Board to J1 on the US Generator Board Refer to the signal list The signals include address and data lines handshake lines and power supply controls Connector JP6 is for the membrane switches JP1 is the power supply connector and supplies power from the desktop power supply JP2 is the output power connector for the Ultrasound Generator Board JP4 supplies power to the fan and JP3 is for the beeper e The Stim Control Board The signals controlling the Stim Board leave JP7 on the Control Board and go through a 40 conductor cable to JP1 on the Stim Board See the Signal List for details Signals include address and data lines handshake lines and power supply control signals Connector JP4 is for the LCD screen It is mounted directly behind the board and against the front panel JP9 carries power for the electroluminescent backlighting TM Innovation starts here 6 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Connector JP10 is for the membrane switches JP1 is the power supply connector and supplies power from the desktop power supply JP2 is the output power connector for the Stim Board JP3 supplies power to the fan and JP6 is for the beeper The Stim
9. the theory of operation to guide you Innovation starts here 25 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Intelect Legend Stim Error Messages Explained Below is a list of the messages displayed on the LCD screen when an error is detected as well as a brief explanation of the source of the message Channels Needed for This Mode are Busy Either no channels are open to run a new signal or the dedicated channel for HiVolt is already being used Over Current Fault on Channels X X Where X is a channel number Indicates that a severe overcurrent was detected on the specified channel s Intelect Legend US Error Messages Explained Below is a list of the codes displayed on the LEDs when an error is detected HHH The applicator has reached a temperature that is too high and the US output has been stopped noHd No ultrasound applicator detected E03 An attempt to set up an address on the onewire device failed E04 An attempt to read data from the ultrasound applicator failed E05 An attempt to program the ultrasound applicator failed This only occurs during calibration E06 The ultrasound applicator memory is full This only occurs during calibration E07 The memory device in the ultrasound applicator is not the proper type E08 The ultrasound applicator is uncalibrated Innovation starts here 26 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC
10. 56 5 cm 5 watts 4 3 5 7 10 watts 8 6 11 4 10 cm 5 watts 4 3 5 7 10 watts 8 6 11 4 15 watts 12 9 17 1 20 watts 17 2 22 8 15 Calibration complete If you are not satisfied with the calibration and wish to start over turn the machine OFF and begin at step one listed above TM Innovation starts here 42 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Technical Specifications Listed here are the specifications for the Intelect Legend Ultrasound Dimensions 8 25 x 11 x 2 5 Weight 2 lb Applicators 2 5 amp 10 cm Power 90V 264V 47 63Hz 2 cm Applicator Frequency Mhz 1 0 MHz 3 3 MHz all 5 Power watts 0 2 watt to 4 watts ERA cm 1 8 cm Effective Radiating Area Maximum beam non uniformity ratio Beam type 5 cm Applicator Frequency Mhz Power watts ERA cm Effective Radiating Area Maximum beam non uniformity ratio Beam type 10 cm Applicator Frequency Mhz Power watts ERA cm Effective Radiating Area Maximum beam Duty Cycle 1 8 cm 0 4 cm 6 0 1 Collimating 1 0 MHz 3 3 MHz all 5 0 4 watt to 10 watts 4 0 cm 4 0 cm 1 0 cm 6 0 1 Collimating 1 0 MHz 3 3 MHz all 5 1 MHz 1 watt to 20 watts 3 3 MHz 1 10 watts 8 5 cm 8 5 cm 1 5 cm non uniformity ratio 6 0 1 Beam type Collimating Pulsed 10 20 50 Continuous 100 Pulse Duration 5 msec 20 50 duty cyc
11. CHATTANOOGA TN GROUP INC Intelecf Legend Series service Manual P N 78343 Rev A CHATTANOOGA GROUP INC I NEED TO KNOW Go to page Warranty Information 3 How the unit works 6 What might be wrong with my unit 25 What the error messages mean 26 Special Key Combinations 27 How to calibrate the unit 38 How to open the unit 9 How the boards interconnect 36 Where the connectors are 11 What the signals are 11 Part numbers eese ee 46 How to get service help 3 How to close the unit 9 Technical Specifications 43 First look on this page to quickly find where to go in the manual for more information Innovation starts here 2 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Intelect Legend Two Year Limited Warranty The Chattanooga Group Inc Company warrants that the Intelect Legend Ultrasound or Stim Product excluding accessories is free of defects in material and workmanship This warranty shall remain in effect for two 2 years from the date of the original consumer purchase of this and extends to any owner of the product during the warranty period Accessories that are inclu
12. CLE button 10 1cm applicator 20 2cm applicator 50 5cm applicator Continuous 10cm applicator 6 Once Applicator size and Frequency are chosen push the START button This will begin the scan and calibration The zero in CALO will flash while the scan is in progress Do not disturb the machine while it is scanning 7 When the scan is complete the display will change to CAL1 Innovation starts here 41 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC 8 Re zero the Ultrasound power meter 9 Using the Intensity UP button increase the output until the power meter reads 4 four watts 10 Push the START button The unit will hold the settings in memory The display will change to CAL2 11 if you are satisfied with the calibration push START 12 The unit will beep to indicate that the new calibration values have been stored in the applicator 13 The display will change to CALO and is now ready for the next calibration 14 After both frequencies have been calibrated and before removing the applicator head from the power meter check the accuracy of the power calibration Cycle the power to the unit off and then back on Select continuous duty cycle and increase the output to the settings listed Verify that the power indicated on the UPM DT 10 power meter is within the indicated range Check power at both 1 MHz and 3 3 Mhz Head size Power level Output range 2 cm 2 watts 1 72 2 28 4 watts 3 44 4
13. Special Key Combinations Intelect Legend Stim Here is a list of the key combinations available for adjusting LCD screen contrast and saving presets Adjust the Contrast UP Channel 1 amp Intensity Up Adjust the Contrast DOWN Channel 1 amp Intensity Down Save Current Output Settings Pause amp Enter Intelect amp Legend US Here is the key combination for saving presets Save Current Settings Intensity Up amp Display Watts W cm TM Innovation starts here 27 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Problems Powering Up The Unit If there is an indicator on the power supply does it turn off when you turn the power switch on If there is no indicator use a voltmeter to monitor the power supply output Yes Try another power supply If the results are the same open the case of the unit and unplug the power connector to each board one at a time until the unit comes on properly That will be the bad board No Does it remain on Yes Is there any indication that power is getting to the unit such as the LCD or LEDs briefly flash or the beeper ticks Yes Unplug everything but the power from the Control Board and see if it comes on If not then it is bad If it did the Stim board or US Generator Board is bad No Check the fuse on the rear of the unit Replace if blown No Check the AC power source and the power cord It could also be a bad power supply Innovat
14. ay HHH in the display The only part that would be bad under these circumstances would be the Applicator For problems related to the Head Warming feature refer to that section Innovation starts here 31 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Head Warming Problems Usually an explanation of exactly how this feature works will help you determine if the problem is due to the Applicator or the Ultrasound Generator Board When Head Warming is selected the ultrasound output is turned on at half the maximum output for the head size and the frequency is set to 3 MHz The head temperature is monitored and when it reaches a temperature slightly above skin temperature the output is reduced to a level of about 10 of maximum to maintain the temperature If the temperature rises above the skin temperature while at the 10 level the output is turned off until the temperature falls back down On the other hand if the temperature rises to the maximum head temperature the unit will display HHH and the output will be turned off to protect the crystal in the Applicator Bear these facts in mind at any time Head Warming is on the output can be off at 10 or 50 of maximum and the unit is functioning normally Reaching HHH occasionally would not be abnormal but could indicate that the Applicator is extremely inefficient Recalibration see the Applicator Calibration Procedure or replacement would be requir
15. d continuously whenever the power is on Special Tools Most any operation can be performed without any special tools If you need to replace the EPROMs or PALs on any of the boards you MUST use a special tool to remove the parts Attempting to remove these IC s in any other way can damage the socket and make the entire circuit board unusable The preferred tool is Burndy QILEXT 1 sold by Newark Electronics as type 290N P N 95F 3004 Closing the case Re assemble the unit taking care to properly install any cables you may have disconnected When lowering the top down onto the bottom be careful not to capture any wires in the edge of the case If you are having difficulty it may be necessary to align one side of the case and then force the other side to align Also notice that the metal plates on either side must align with plastic structures inside the case After all this work look around the edge of the case one last time to be sure everything looks OK Now the back panel may have fallen into the cabinet while aligning the top and bottom don t panic Carefully lift the rear edge of the top just enough to allow you to pull the panel back into its slot in the top and bottom of the case Innovation starts here 9 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Hold the unit together and flip it over once again be sure the table is covered so that the case isn t scratched and put the 6 screws back in place Don
16. ded as standard with the product as listed in the user s manual are warranted for 90 days Ultrasound applicators Zem 5cm or 10cm are warranted for one 1 year Ifthis product fails to function during the two year warranty period because of a defect in material or workmanship the company or the selling dealer will replace or repair this product without charge within a period of 30 days from the date on which the defective product is returned to the company or dealer The company or the dealer will ship the replacement or the repaired product to the owner All repairs must be performed by a service center authorized by the Chattanooga Group Inc Any modifications or repairs performed by unauthorized centers or groups will void this warranty To participate in warranty coverage the product s warranty registration card included with the product must be filled out and returned to the Chattanooga Group Inc by the original owner within 10 business days of purchase This warranty does not cover Replacement parts or labor furnished by anyone other than the Company the dealer or an approved Company service agent Defects or damage caused by labor furnished by someone other than Company the dealer or an approved Company service agent Any malfunction or failure in the product while it is in the possession of the owner during the warranty period if the malfunction or failure is not caused by a defect in material or workmanship or if the malf
17. e boards it is not recommended that problems be traced to the component level Some problems may be due to a misunderstanding of how the machine operates Thus it is important to read the operators manual first to gain familiarity with how the machine operates under normal circumstances Since this service manual is intended to assist in isolating the problem to a circuit board we will not cover the functions performed on each board in detail This manual presents a brief theory of operation of each board and accessory in the unit It contains a troubleshooting guide for common problems This guide is not meant to cover every possible problem that a service technician might encounter but rather to give examples of what may be seen The manual also contains diagrams of the connector layout of each board a system diagram of how the unit is wired and a list of signals carried on each wire Also included are calibration procedures for the unit parts lists and information on obtaining service Important The specifications and information put forth in this manual were in effect at the time of publication However owing to Chattanooga Group s policy of continuous improvement changes to these may be made at any time without obligation on the part of Chattanooga Group Inc Specifically as there are improvements made to the circuit boards in these units the connector names may change However the location and function of the connector will not l
18. e output waveform is similar to that shown below Press Enter and use Main Menu down button to move to Polarity Toggle polarity from positive to negative and observe that the waveform changes as shown below Press Stop upon successful completion ry P P e H H b H H H P b H H H b H gt H H gt H gt wwe Eo ese b M H H P D H M M H b b Py H H H M H H H H H H H M H M H H Pg H H H H H H H P b H H H H M Negative e Hi Volt Waveforms scope set to 50V div 20uSec div 4 Russian Press Channel 1 button Press Russian amp observe Channel 1 Russian At Mode press Enter and select CoContract and press Enter again Main Menu heading must say Ch1 2 Russian Move down to Cycle Time with the arrow keys and press Enter Select Continuous and press Enter again Increase Intensity with the arrow key to maximum 100ma and press Start Verify on Main screen that both Channels reach 100 by pressing the Channel 1 and 2 button Verify that the output Innovation starts here 39 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC waveform on both channels is similar to that shown below using the oscilloscope Russian Waveform scope set to 50V div 5mSec div Press pause to pause the operation and then press the Up and Down Time buttons to confirm that the time changes Set the treatment time to 1 minute and push Start Upon completion y
19. e unit to operate properly See the board drawing in the Signal Lists section for jumper configuration The Ultrasound Board The Ultrasound Board uses a Phase Locked Loop PLL that is set bya PAL based on control by the Control Board to generate a stable high frequency signal This signal is used to drive an amplifier whose output is filtered and drives the transducer The amplitude of the amplifier output is determined by its programmable power supply Other circuitry monitors the temperature of the transducer as well as voltage and current of the drive to the transducer Innovation starts here 7 Intelect Legend Series Service Manual CHATTANOOGA mSS whHAITANUUSUA GROUP INC The Ultrasound Board is controlled by signals from connector JP5 of the Control Board that are carried through a 40 conductor cable to J1 on the Ultrasound Board The signals consist of address and data lines as well as handshake lines There are also signals for turning off the power supplies on the Ultrasound Board when it is not generating output The power for the Ultrasound Board is through J2 Connector J3 is the output of the Ultrasound Board which ultimately drives the transducer in the applicator The Ultrasound Applicator The Ultrasound Applicator comes in several models depending on the surface area of the transducer and the shape of the face of the transducer The circuitry within all of them is the same Connection to the Applicator is thro
20. ed to correct this If the head never warms up check for output at 3 MHz by selecting 3 3MHz Continuous and pressing Start Is there output at 3 MHz Yes Something is malfunctioning on the Ultrasound Generator Board No Remember that Head Warming uses the 3 MHz output The Applicator may need to be recalibrated for 3 MHz operation see the Applicator Calibration Procedure or be replaced M Innovation starts here 32 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Display Related Problems Stim unit LCD Is the LCD screen completely black Yes Adjust the contrast Is the problem corrected No The LCD screen should be replaced No Is the LCD screen garbled lines odd text etc Yes Is the problem consistent If there is a line across the screen is it always in the same place Yes The problem is most likely the LCD display No The problem is usually the Control Board No Is the LCD screen completely blank Yes Are there other signs that the unit is functioning such as the fan runs when a treatment is selected and the intensity increased If not check the items in the Power On section Otherwise try adjusting the contrast If that doesn t correct the problem it could be in either the LCD or the Control Board Check the signals on JP4 refer to the signal list to help determine which it might be No See the section titled My Problem Isn t Described Here for some addi
21. he treatment time counts down on the LEDs Press PAUSE The output should stop the fan should stop and the treatment timer should stop counting down Press START and the output should resume Press STOP and verify that the output stops the treatment timer is reset back to the default the output display is reset back to 0 0 and the fan stops 7 Use the TIME up button to verify that the treatment time will not go above 15 minutes Use the DOWN button to set the time back to 1 minute Select 10 Duty Cycle using the DUTY CYCLE button increase the intensity to maximum and press START While the unit is running press the DISPLAY button and verify that the displayed power changes from 2 0 W cm to 10 0 Watts assuming a 5cm applicator is attached Allow the unit to run until treatment time runs out Two beeps should be heard followed by another two beeps and then the display will clear back to the default 8 Testing complete Intelect Legend Applicator Calibration Procedure 1 Put unit into calibration mode Turn the unit ON while holding down the Intensity UP button It is not necessary to hold the button down after the initial beep sound 2 The Min Sec display should read CALO indicating that the machine is in calibration mode and at the first calibration step 3 Place the applicator into the Ultrasound power meter 4 Select the calibration frequency using the FREQUENCY button 1MHz or 3MHz 5 Set the Head Size using the DUTY CY
22. ical codes WARNING This device should be kept out of the reach of children Innovation starts here T 5 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Theory of Operation Overview To better understand the details in the following paragraphs a quick look at the operation of the entire system is helpful The unit is powered by a desktop switching power supply which accepts 100 240VAC and delivers a regulated 12 16VDC Each board within the unit has its own local regulation as required by the particular board functions The user interface consists of the membrane switch panel on the top of the case and the LCD parameter screen for the Stim unit or LED displays for the Ultrasound unit Choices presented on the LCD screen are selected via the membrane switches for the Stim unit while selections are made directly from the membrane switches and reflected in the LED displays on the Ultrasound unit After a treatment is started on the Stim unit the LCD screen returns to a display showing the status of the outputs The LED displays constantly reflect the status of the Ultrasound unit Alarms and feedback of keypresses are provided by a beeper located inside the case Connection for the ultrasound applicator and for electrode lead wires are made to panels on the side of the unit The rear of the unit has the power supply input connector the fuse and the fan Accessories supplied with all Ultrasound units include at least
23. ikely change Use reasonable judgment and contact Chattanooga Group when in doubt Chattanooga Group Inc obviously cannot be responsible for work performed on their units by individuals or other companies not approved or authorized to perform service on Chattanooga Group equipment Always try to resolve any problems through your dealer or Chattanooga Group s customer service department FIRST Please read and understand the following precautions before using or servicing a unit M Innovation starts here 4 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC PRECAUTIONARY INSTRUCTIONS As with any electrical device use extreme caution while working inside the devices Some of the circuits produce high voltages which may be accessible while servicing the unit Be especially mindful of jewelry and tools that may accidentally come in contact with components inside the unit Most of the electronic components incorporated in the unit are electrostaticly sensitive Always wear a static grounding strap and work on a static dissipative surface CAUTION Read understand and practice the precautionary and operating instructions contained in the unit s manual and in this service manual Know the limitations and hazards associated with using any ultrasound device Observe the precautionary and operational decals placed on the unit CAUTION Do not operate the Intelect Legend Unit when connected to any unit other than Chattanooga
24. ion starts here 28 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC No Ultrasound Output First check that the duty cycle or intensity is not so low that you can t observe water movement on the applicator head If there is some movement but not as high as expected use an ultrasound power meter to test the output If it is low then follow the Applicator Calibration Procedure in this manual If there is absolutely no output try another applicator Any Chattanooga Group applicator from an Intelect Legend or CPS unit that has the same connector will work Did swapping the applicator fix the problem Yes The applicator is bad No The generator board is probably bad Also check the connector and harness inside the unit If you do not have another applicator you can check for output on the Ultrasound Generator Board using an oscilloscope Refer to the Ultrasound Generator Board drawing and signal list in this manual If there is output at the board connector the applicator is bad No Stim Output Does the display change when a treatment is selected No The Stim Board is probably bad Also check the connector and harness inside the unit Yes First be sure the leads and electrodes are good If possible test the output with a resistor Next be sure the output type is available at the channel you are monitoring For example HiVolt is only available from channel 2 See the manual Also check the output ha
25. irectly to the board and therefore are not replaceable Innovation starts here 8 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC General Service Procedures Preventing damage to the case The plastic case of the Intelect units is quite durable as are the membrane switch overlays To remove the screws and open the case for servicing it will be necessary to place the unit upside down Be sure the work surface is covered so that the unit isn t scratched Also be careful with tools that may scratch the case or overlays Location of screws There are 6 screws that hold the case together and all of them are accessible from the bottom of the unit These screws are distinguished from others on the bottom in that they are all recessed into the plastic case Remove all 6 screws Opening the Case Flip the unit back over and carefully lift the top of the case off the bottom The top of the case can be opened from the left and put on the right side of the bottom without disconnecting the cables If you do need to remove any cables NOTE THE ORIENTATION of these cables BEFORE unplugging them because pin 1 is not marked on all the PC Boards Mark the cable or connector and the board before unplugging with a permanent marker tape or other means if you need to You will also need to make note of which small 2 wire connector is for the fan and which is for the beeper If these become swapped when assembling the unit the beeper will soun
26. le pulsed mode 2 msec 20 20 duty cycle pulsed mode Innovation starts here 43 intelect Legend Series Service Manual CHATTANOOGA GROUP INC Ultrasonic Power 10 cm crystal at 1 0 MHz Variable from 1 watt to 20 watts 10 cm crystal at 3 3 MHz Variable from 1 watt to 10 watts 5 cm crystal Variable from 0 4 watt to 10 watts 2 cm crystal Variable from 0 2 watt to 4 watts Innovation starts here 44 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Listed here are the specifications for the Intelect Legend Stim Interferential Output Channels 1 amp 2 Amplitude 0 50 mA RMS into a 500 ohm load Current Limit 50 mA RMS Voltage max 200 Volts Peak to Peak Carrier Frequency 5000 Hz Beat Frequencies 0 200 Hz Premod Channels 1 amp 2 Amplitude 0 50 mA RMS into a 500 ohm load Current Limit 50 mA RMS Voltage max 200 Volts Peak to Peak Carrier Frequency 2000 5000 Hz Beat Frequency 0 200 Hz Russian Channels 1 amp 2 Amplitude O to 100 mA RMS into a 500 ohm Load During On Time of Burst Current Limit 50 mA Average Voltage max 200 Volts Peak to Peak Carrier Frequency 2500 Hz Burst Frequency 20 100 Hz Duty Cycle 10 to 50 HiVolt Description The output is a fast rising dual pulse with approximately 75 microseconds spacing between pulses Pulse duration First peak is 5 microseconds at one half pulse height and second peak is 8 microseconds at one half pulse height The
27. other Applicator The unit will continue to give error messages if the Ultrasound Generator Board is defective If this is not possible monitoring the output line while the unit is trying to read the calibration data can help determine which component is bad Under normal conditions a fast pulse train is seen as the data is passed from the Applicator to the Generator Board with an amplitude of SV If the amplitude is 12V the Ultrasound Generator Board is faulty If the pulse train is not observed unplug the applicator and try pressing the Frequency button while monitoring the output If a single 5V pulse is observed the Applicator is bad If no activity is seen then the Ultrasound Generator Board is bad During calibration of the Applicator an error message E06 means that there is no more room in the memory device to store the calibration data The Applicator will have to be replaced An E05 message could be due to either the Applicator or the Ultrasound Generator Board Use the information in the previous paragraph to diagnose which it is Innovation starts here 30 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Applicator Overheating This is not normally due to any malfunction of the unit but rather is related to the coupling of the head to the patient If good coupling contact to the skin is not maintained during treatment the head can heat up If the head gets too hot the unit will pause the treatment and displ
28. ou should hear 2 beeps a pause and then 2 more beeps to indicate end of treatment The output must be at zero at this time C Screen Intensity Adjustment 1 Hold Channel 1 and Intensity up or down button to adjust the screen for proper display Remove power Test is complete Intelect Legend US Calibration Procedure Note All caps indicate a front panel button 1 Plug the applicator and appropriate power supply into the unit Plug the power supply into an appropriate outlet and turn the unit on It should beep and the LEDs should illuminate then fill with default time duty cycle and frequency 2 Unplug the applicator The message noHd should appear in the treatment time display Plug the applicator back in press a key and observe that the message disappears 3 Press HEAD WARM The fan should start and output will be displayed on the LEDs Pressing it a second time will stop the fan and the output will return to 0 0 Innovation starts here 40 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC 4 Press the FREQUENCY button and verify that 1 MHz and 3 MHz LEDs are illuminated Leave 1 MHz selected 5 Press DUTY CYCLE until Continuous is illuminated noting that each LED is functioning Use the INTENSITY up button to set the output to 2 0W cm The fan should begin running Press START By applying a small amount of water to the transducer verify that there is ultrasound output 6 Observe that t
29. out the signal JP1 Stim Control Board Pin SignalName U Battery In B In PowerSuppyln Power 8to 18VDC BEEN Ground Le e ER Board Ping SignalName Typp p 1 1 Power 8 to 18 VDC Power 8 to 18 VDC Innovation starts here 14 Intelect Legend Series Service Manual i CHATTANOOGA GROUP INC 3 Ground J JA 9 3J d 4 Ground A AJ JP3 Stim Control Board 1 Unregulated Power Power 8 to 18VDC Current Limited 2 Buzzer On Output Open Collector Active Low Stim Control Board 1 L roumd 2 Gond LI with contrast 6 LCDReed Output Digital Active Low Digital Active Low LCD Command Data Output Digital Data is Active 9 NoConnecton O O j Digital LCD Data Line 2 Digital Digital Digital Digital Digital Digital Ground ee 20 NoConnection O Z JP6 Stim Control Board Sional Name Typp 1 Innovation starts here 15 Intelect Legend Series Service Manual 8 18VDC CHATTANOOGA 2 JP7 Stim Control Board Pin Signal Name Oo d NO sech 1 1 C 3 4 6 1 d CO N Neo 25 NIN N N NIN ii 3 S zt 9 3 B d Ey Type Dual Port RAM Input Ground X Ground Dual Port RAM Output Ground Dual Port RAM Output Outp
30. p UM iocis nan nt Depends on waveform 2 NoConnection O Depends on waveform Stim Board Not Used on Legend Series Innovation starts here Ve 23 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Output eae eum LL LED Anode 3 Microcurrent Probe Input Digital Switch ere eum Pot Top Pot Wiper 6 Ground PT 7 No Connection 8 Channel 1 Output Low Not Used BENE TM Innovation starts here 24 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC My Problem Is With Go to page Error Messages 26 Special Key Combinations 27 Ne Gel 28 No Output EEN 29 Head Detection and 30 Data Reading Applicator Overheating 31 Head Warming 32 Al vUN 33 No Display Garbled Display Black Display Settings Return to Defaults after 34 adjustments None of the above MEM 35 Find the topic that best describes your problem and turn to that section for troubleshooting help This troubleshooting guide will help you through a process of elimination The key is to gather as many clues as possible Observe the behavior of as many aspects of the unit s operation as possible If there is no clear path or conclusion use the information you have gathered as well as
31. rds and determine the source of the problem eObserve the unit s operation and find as many details of the problem as possible such as the mode it occurs in settings etc els the problem repeatable or intermittent eConsider parts that may wear as more likely to fail eExamine the circuit boards carefully for signs of failed components such as oily residue underneath an electrolytic capacitor charred or broken components eReplace the complete circuit board do not attempt to repair it Innovation starts here 35 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC iagrams iring D g diagrams for the Intelect Legend W These pages have the wirin Ultrasound and Intelect Legend Stim units Refer to them for connection information and part numbers AJNO SLINN 30 NO Q31YVISNI SINJNOdNOD 4 Qy38 318331 99664 ar 8 dev SN d SN Sa NaWH 6018 WV49vIQ 9NISIM SA QN3931 INI ASSY N39 SA 03u13 1L IW 82d t Legend Ultrasound ASSY Q8 1031N09 SN QN3931 82d 11284 m Wei d SN Sa NINH 90184 EZE 2n8 1N09 d SN Sd Mu 0182 YMd INO9 d SN Sdd Nav 01184 E AVT3AO 40 Iud 01 3NN0O os SN AMd IN0J d SN Sd Wu 90182 Gd Intelec NOHH INIC Oy 1N02 50 d SN Sd NUWH Tea Sd 36 Intelect Legend Series Service Manual TM Innovation starts here CHATTANOOGA GROUP INC Qv38 31431 9966z BU Ns zo EECH Sd NUVH 26082
32. rnesses and connectors or monitor the output at the connector on the Stim Board If these checks do not reveal the source of the problem and there is no output in one or more treatment modes the Stim Board is faulty Innovation starts here 29 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Applicator Detection and Data Reading Problems To help diagnose these problems keep in mind how the unit operates The unit determines whether an applicator is connected based on the voltage from the thermistor in the applicator If the applicator is unplugged the voltage rises to 5V from its normal 2 3V This is sensed and the unit will then try to get the memory device in the applicator to acknowledge a reset signal If this fails the message noHd is displayed On the other hand if the voltage drops low it is interpreted as the head overheating and HHH is displayed This is also what would happen if the applicator was shorted The voltage can be monitored WHILE THE ULTRASOUND GENERATOR IS NOT RUNNING by measuring the voltage on the output pin of the connector on the Ultrasound Generator Board Refer to the board drawings and signal lists The calibration data is read both at start up and when US is selected Errors E03 E04 E07 and E08 are due to problems in the communications at these times This can be caused by either the Applicator or the Ultrasound Generator Board The easiest way to determine which is bad is by trying an
33. se measurements are with a load impedance of 1 000 ohms Pulse duration varies according to body impedance load resistance Channel 2 Only Voltage Current 0 500 Volts Output Current 0 2500 milliamps peak Frequency 1 120 pulses per second TM Innovation starts here 45 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Parts List The following is a list of replaceable parts for the Intelect Legend Ultrasound and Intelect Legend Stim units with their Chattanooga Group part numbers 78211 ntelect Ultrasound Control Board Assembl 78811 telect Stim Control Board Assembl 77001 Ultrasound Generator Board Assembl 78321 tim Generator Board Assembl cm Applicator Assembl cm Applicator Assembl Ocm Applicator Assembh O Conductor Cable Assembly Control Bd to US Generator Bd Ampere Slo Blo Fuse Ampere Slo Blo Fuse 78108 Fan for CPS Ultrasound or Stim 78215 ntelect Ultrasound Membrane Switch 78217 ntelect Stim Membrane Switch 78121 120VAC Power Cord 78082 ntelect Ultrasound or Stim Power Suppl 78113 UL 544 Power Suppl 78107 Buzzer for Intelect Stim or Ultrasound 78023 Power Switch 78109 Ultrasound Output Harness 78092 Stim Output Harness 78097 Stim HiVolt Output Harness Innovation starts here TM 46 Intelect Legend Series Service Manual
34. t overtighten the screws tighten them just until the edges of the case seat together TM Innovation starts here 10 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Signal Lists Intelect Ultrasound Control Board Below is a simple drawing showing the approximate locations of the connectors and the position of pin 1 on each connector Legend US Control Below are tables showing the signals for each connector on the Control Board The columns are arranged as pin number signal description type of signal and any other notable information about the signal US Control Board Signal Name S P Power P P Power Supply In ower 8 to 18 VDC Power Supply In ower 8 to 18 VDC Ground E Intelect Legend Series Service Manual TM Innovation starts here 11 CHATTANOOGA GROUP INC 3 Ground J 4 Ground JP3 US Control Board Ping SignalName Typ 1 Unregulated Power Power 8 to 18VDC Current Limited Output Open Collector Active Low US Control Board Pin SignalNam Typ Unregulated DC 8 18VDC Output Open Collector Active Low US Control Board Pins SignalName Type Ground Digital Ground Digital Ground LI SSS o O igi Ground Ir O O Bi Directional igi Ground LI O O 10 igi Ground Ir igi Ground LI o o 14 Digital 15 Gound Bi Directional Digital Ground Il No
35. tional troubleshooting tips Your problem will be either a defective Control Board or LCD screen or possibly the connection between them Ultrasound unit LEDs Are any LEDs working Yes The Control Board is faulty No Are there other signs that the unit is functioning such as the fan runs when Start is pressed and the intensity increased If not check the items in the Power On section If those checks reveal that there is power to the Control Board then it is faulty Innovation starts here 33 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Settings Return to Defaults After Adjustments This is usually caused by a faulty Membrane Switch If a switch sticks the function it performs can cause changes in the parameters selected and other odd behavior Occasionally this can be due to a defective Control Board as well TM Innovation starts here 34 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC My Problem Isn t Described Here While we have tried to make this manual as complete as possible and include as much troubleshooting help as we can there will still be some problems which haven t been foreseen or are so rare as to not be included Some tips eAlways begin by reading the Theory of Operation and review the Signal Lists By understanding what the unit is supposed to be doing and how the circuit boards communicate you can usually probe some of the signals and or swap some boa
36. ugh a triaxial cable The center conductor carries the drive to the transducer while the inner shield is the return The outer shield is used to monitor the transducer temperature using a thermistor inside the Applicator A small circuit board inside the Applicator holds components for transducer temperature sensing and the memory device The memory device stores the frequency and power information for the transducer The memory device communicates via the two shields of the cable The Membrane Switch Panel The membrane switch panel connects to JP6 on the Ultrasound Control Board and JP10 on the Stim Control Board The switches are electrically arranged such that one side of all the switches have a common return The other side of the switches are brought out individually to the connector The switch activations are buffered and latched on the Control Boards The LCD Parameter Screen The LCD parameter screen mounts between the Control Board and the top of the case The interface between the LCD and the Stim Control Board s JP4 is a bi directional 8 bit bus along with handshake signals There is a separate connection via JP9 for supplying power to the electroluminescent backlight of the LCD There is a module mounted on the Control Board which generates the necessary voltage for this The LED Interface The LED displays mount on the solder side of the Ultrasound Control Board so as to show through the overlay on the case They are soldered d
37. unction or failure is caused by unreasonable use applications in which the product was not intended or the failure to provide reasonable and necessary maintenance The Company shall Not be Liable for Incidental or Consequential Damages To Obtain Service From Company or the selling dealer under this warranty the owner must do or abide by the following e A written claim must be made within the warranty period to Company or the selling dealer e If the claim is made to the Company the written claim should be sent to 4717 Adams Road P O Box 489 Hixson TN 37343 Phone 800 592 7329 e The product must be returned to Company or the selling dealer by the owner This warranty gives you specific legal rights and you may also have other rights which vary from state to state The Company does not authorize any person or representative to create for it any other obligation or liability in connection with the sale of the Product Any representation or agreement not contained in the warranty shall be void and of no effect Innovation starts here 3 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Start Here About This Manual This manual is intended to cover the Intelect Legend Ultrasound and Stim units and their accessories only The purpose of this service manual is to give a qualified technician enough information to troubleshoot problems to the board level Because of the complexity and construction of thes
38. ut Enable Oum Ground Dual Port RAM Chip Output Saz 177 Dual Port RAM Chip Enable Board 2 Ground po Output Stim Channel 1 Output Power Down No Connection Ground Stim Data Line0 O Z MicroCurrent Probe Input Switch Ground GROUP INC Open Collector Active Low Digital Active Low igital igital igital Active Low igital LI a igital Active Low O igital igital igital Active Low LI igital ctive Low 2 igital Digital Digital Digital Diaital 16 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC 31 j Gond LI 33 L toung j 35 Stim Channel 2 Output Digital Power Down 37 Grund O S 38 X StimDataLine6 BiDirectiona n lt Digital Active Low Stim Control Board Pin SignalName Typ o Backlight Power Power Approx 100VAC BEEN NN 2 jGond 7 JP10 Stim Control Board Ping SignalNam Type J Gound Switch 3 6 Switch4 input DigialActiveLow 8 Switch6 Input 9 Swith7 Ipu DigitalActiveLow Input Input Innovation starts here M 17 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC Ultrasound Generator Board Below is a simple drawing showing the approximate locations of the connectors and the position of pin 1 on each connector a ee a n De
39. utput to 50ma and press Start Screen should change to opening display listing Channel 1 IFC at top and timer display in large letters counting down from 15 00 and Output at 50ma Below the output is Ch2 IFC Verify waveform is similar to that shown below with oscilloscope Move the oscilloscope probe to the Channel 2 load and verify that the waveform is similar to that shown below using the oscilloscope Press Pause and observe the output Main display will show a P beside the output and output will drop to 0 0ma Press Pause to restart and Stop to reset IFC waveform scope set to 20V div amp 2mSec div Innovation starts here 38 Intelect Legend Series Service Manual CHATTANOOGA GROUP INC 2 Premod With the oscilloscope probe on channel 2 press Channel 2 button Press Premod and observe Channel 2 Premod Adjust output with Intensity arrow to 50ma and press Start Main screen should display Channel 2 Premod with timer counting down from 15 00 and 50ma as output with Ch1 Avail below Verify waveform is similar to that below using the oscilloscope Press Stop to reset Premod Waveform scope set to 10V div 1mSec div 3 HiVolt Press HiVolt and Main Menu should display at top Ch2 High Volt Time should be set to 20 00 and Int should now read Ov Press Enter to select Probe Output must display Ov Press Enter again to select Pads Increase Output with the Intensity up button to 500 Press Start and verify that th
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