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WED-2000V, WED

1. 11 DOG HD to calculate G A of dog in accordance with head diameter 12 DOG BD to calculate G A of dog in accordance with body diameter G A gestional age unit week day EDD estimated delivery date Press the O B key to select the correct item then measure the distance of the correlative region in the image the result of G A will be displayed automatically at G A and the result of EDD will be displayed at EDD 4 2 Mouse As a supplementary means to keyboard operation mouse makes the measurement much more fast and convenient It is mouse with three keys The leave middle and right buttons can fulfill specific functions Leave key Press this key at any time to display measuring mark during distance measurement continuous WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 43 Chapter Four WED 2000AV Operation pressing on this key can shift between start point and end point Middle key When 1s displayed on the screen press this key to determine the start point and end point in circumference and area measurement Right key When is displayed on the screen press this key to confirm the end point cursor in distance measurement 4 3 Start the device Switch on the power switch the power indicator on the panel turns on and the start interface shows press any key except Key to enter the state of scanning Adjust the display brightness contrast and overall gain knob to acqui
2. cm Equivalent aperture diameter cm Depth for TIS em Depth for TIS em TIS cm Depth for TIB cm Depth at max attenuated pulse intensity integral cm Supplementary information a Transducer Model S2 3 5MHz b Transducer serial No AP0530546 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 75 Appendix C Acoustic output reporting table System Model WED 2000AV m x TS ms TS mb T Tic Non Non scanning scanning Mogg Scanning Scanning di Aaprt gt ae lem Acoustic working Pate MHz N a T 3 iM pu NE output Power 23 7 237 mw Attenuated output power 0 009 0 01 mw Spatial peak temporal average intensity my cm Attenuated spatial peak temporal average intensity mw cm Pulse intensity 66 87 14 52 integral uj em Attenuated Pulse intensity 16 63 10 99 integral j cm Peak rarefactional acoustic 1 50 pressure MPa Attenuated peak rarefactional acoustic pressure MPa 1 2dB output beam area cm Equivalent aperture 1 875 diameter cm Depth for TIS em Depth for TIS em TIS cm Depth for TIB em ELLE Depth at max attenuated pulse intensity integral cm Supplementary information a Transducer Model S2 5 0MHz b Transducer serial No AP0570204 76 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E App
3. I mW cm Output beam dimensions cm Appendix C Acoustic output reporting table Appendix C Acoustic output reporting table m ERN Non scanning scanning Non Scanning Scanning Aaprtsl Aaprt gt scanning cm lem SE Mam a Model WED 2000V de Mode Acoustic working ESS MHz Output power mw power mw Bounded output Power mw Spatial peak temporal average intensity my cm Attenuated spatial peak temporal average intensity my cm Pulse intensity 30 16 integral uj em Attenuated Pulse intensity 2 11 78 integral uj ecm Peak rarefactional acoustic 123 pressure MPa Attenuated peak rarefactional acoustic 0 76 pressure MPa 1 2dB output beam area 216 cm Equivalent aperture diameter cm Depth for TIS em Depth for TIS em TIS cm Depth for TIB em L H Depth at max attenuated pulse intensity integral cm Supplementary information a Transducer Model S2 3 5MHz Attenuated output power mw b Transducer serial No AP0530546 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 73 Appendix C Acoustic output reporting table System Model WED 2000V de TS ons scanning scannin I Mode Scanning z Scanning 50 n Aaprt gt scanning Lem Acoustic working A MHz Ta ia e d Output power Output power mw Bound
4. according to the transmitter IEC 61000 4 3 80 MHz to 2 5GHz manufacturer and d is the recommended separation distance in metres m Field strengths from fixed RF transmitters as determined by an electromagnetic site survey should be less than the b compliance level in each frequency range Interference may occur in the vicinity of equipment marked with the following symbol Ca NOTEI At 80 MHz and 800 MHz the higher frequency range applies NOTE2 These guidelines may not apply in all situations Electromagnetic propagation is affected by absorption and reflection from structures objects and people a Field strengths from fixed transmitters such as base stations for radio cellular cordless telephones and land mobile radios amateur radio AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy To assess the electromagnetic environment due to fixed RF transmitters an electromagnetic site survey should be considered If the measured field strength in the location in which the WED 2000VAV Ultrasonic Diagnostic Equipment is used exceeds the applicable RF compliance level above the WED 2000VAV Ultrasonic Diagnostic Equipment should be observed to verify normal operation If abnormal performance is observed additional measures may be necessary such as reorienting or relocating the WED 2000VAV Ultrasonic Diagnostic Equipment b Over the frequency range 150 kHz to 80 MHz field st
5. d First check if mouse can not response in every direction If problem occurs with some direction repair the relative photoelectric components If there is no response in every direction check mouse connecting wire to see if there is poor contact or leader breakage replace another mouse to see 1f problem still exist If yes check mouse motherboard interface circuit and power supply part Replace SCM of the same model ie soft hardware of the same model and check the peripheral circuits CSC IN OSC OUT EM8370B x RIS Mouse circuit diagram 7 Nonperiodical image sudden bright and dark phenomena 1 Possible reasons a b c d Luminance potentiometer is damaged Contrast potentiometer is damaged LCD failures LCD drive circuit failure 2 Failure isolation method a b c d First check luminance potentiometer contrast potential to see if there is poor contact invalidation sparkling phenomena Then check if the H cable from main unit to LCD is connected well or not If ok use external monitor to check if there is video signals output from main unit If the external monitor has normal image display it means there is problem with the LCD drive circuit If the external monitor has no display there is problem with main unit Check if motherboard mains input is normal If yes repair or replace motherboard When repairing the mother board first check if there is signal output from triode
6. Battery Figure 1 5 WED 2000V back side sketch map eet m E FREEZE Figure 1 6 WED 2000AV front sketch map l IPX7 DC 14V VIDEO OUT MOUSE PROBE Figure 1 7 WED 2000AV side mouthpiece sketch map WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 21 Chapter One Sunmary Figure 1 8 WED 2000AV underside turn button sketch map Battery ae d o L E LA o ret Radiating holes k Figure 1 9 WED 2000AV back side sketch map 1 8 EMC statement WED 2000V WED 2000AV shan t affect the basic performance of radio service and other equipments and can work well in the expected and declared electromagnetic environments 22 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Two Installtion Chapter Two Installation 2 1 Operating environmental requirements 1 Environment temperature range 10 C 40 C 2 Relative humidity range 30 75 3 Atmosphere pressure range 70KPa 106KPa When using avoid strenuous vibration keep it away from devices with high field intense magnetic field or high voltage avoid strong sunlight blazing down on the display keep the device well ventilated moisture proof and dustproof 2 2 Unpacking inspection After unpacking check the device according to Packing List and install it according to requirements and methods described in Installation after affirm that there 1s no shipping damage 2 3 Installation and
7. Chapter Three WED 2000V Operation SWINE HL EQUINE GS BOVINE BL BOVINE SL BOVINE HL SHEEP USD CAT HD CAT BD DOG GSD DOG CRL DOG HD DOG BD WEEK DAY Figure 3 4 Obstetrics tables Among them SWINE HL to calculate G A of swine In accordance with heart length EQUINE GS to calculate G A of equine in accordance with gestational sac diameter BOVINE BL to calculate G A of bovine in accordance with body length BOVINE SL to calculate G A of bovine in accordance with stomach length BOVINE HL to calculate G A of bovine in accordance with heart length SHEEP USD to calculate G A of sheep in accordance with umbilicus to spine distance CAT HD to calculate G A of cat in accordance with head diameter CAT BD to calculate G A of cat in accordance with body diameter DOG GSD to calculate G A of dog in accordance with gestational sac diameter 10 DOG CRL to calculate G A of dog in accordance with crown rump length 11 DOG HD to calculate G A of dog in accordance with head diameter 12 DOG BD to calculate G A of dog in accordance with body diameter O ON WN t BWN G A gestional age unit week day EDD estimated delivery date Press the O B key to select the correct item then measure the distance of the correlative region in the image the result of G A will be displayed automatically at G A and the result of EDD will be displayed at EDD 3 2 Mouse As
8. a supplementary means to keyboard operation mouse makes the measurement much more fast and convenient It is mouse with three keys The leave middle and right buttons can fulfil specific functions Leave key Press this key at any time to display measuring mark during distance measurement continuous pressing on this key can shift between start point and end point Middle key When is displayed on the screen press this key to determine the start point and end point in circumference and area measurement Right key When is displayed on the screen press this key to confirm the end point cursor in distance measurement 3 3 Start the device Switch on the power switch the power indicator on the panel turns on and the start interface shows press any key except Key to enter the state of scanning Adjust the display brightness contrast and overall gain knob to acquire a satisfying visual effect WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 31 Chapter Three WED 2000V Operation Figure 3 5 WED 2000V Start interface Tip The display quality is related to viewing angle of the LCD operator should adjust it accordingly 3 4 Diagnosis Apply an amount of medical ultrasound couplant to the diagnostic part of patient body and then press the acoustical window of the probe on the part closely The cross section acoustic image of tissues will be displayed on the screen move the probe properly to locate the optimum
9. converter DSC large dynamic broadband low noise preamplifier logarithmic compression dynamic filtration edge enhancement etc to ensure legible stable and high resolution images 0900 9 Four display modes B B B B M M Can realize image real time display frozen zoom remark case history number age sex measure distance circumference area heart rate and gestation age Image gray scale 256 levels Combined power supply mode of AC adapter and built in Li ion chargeable battery 3 battery charging modes and the specialized brownout mode enables more lasting battery operation 5 inches TFT LCD display and programmable device FPGA and surface mounted technology SMT make this device compact and light in weight PAL D video output With mouse mouthpiece Jet molding enclosure with hand held structure makes it convenient for out diagnoses The device consists of mainframe probe and adapter Standard configuration is S2 3 5MHz mechanical sector scanning probe with S2 5 0MHz mechanical sector scanning probe S2 3 5MHz and S2 5 0MHz waterproof mechanical sector scanning probes for option The device is proved safe and effective via clinical validation 1 2 Range of application Suitable for diagnosis on swines equines bovines sheeps cats and dogs and other animals 1 3 Technical specification WED 2000V WED 2000AV Prob Probe in standard Optional probes idi S2 3 5MHzMechanical sector 82 5 0MHzMechanical
10. dels td ARN ETA ae ee ESR monts acciones s CODI CON OS RR TERTIO AS Measure MENi teris Ren Ren retat dua Sd FR BRA E AR 2 5 Distance ca SUC men citen aco vane ep Dread eMe Gesn bot detu iet gomes 4 5 2 Circumference and area MeasuremMeDt ssossoseesrerrrerrerrrrrrrrrrrrrrrrr rer rss rr ere rss ser sea AS Hear fale mie as ure me costes acta wari Chou NR DIO tea a da each ad rated it 7 6 Obstetrics Cale UA UO Ne alt ai a C de deco a eu eS du rete indt eos euius A NOOD orien ee na Rando FR ibus Meca malus ED MEL Sheree Rael an necs ALL Note case history mum Ber ID icones eon has bb oa tuin e deve oc eis 4 122 Note patient ape AGB d et dese santas CEN tol beta ttes ictu tu aat educa tua pas sna tas ei its TE UNOS Palle WL Se ES oan cetera acess dose astute buat usd IM EC ea cae DINI T esc AS IMAC CGAL doi Sortes roe PUNOM NANSEN TEN twee ona eee mee eee lee coit OS EO NEE Ue VICE eeu ca wana este m do Nee a ded d du ala oe hod eae x ot Chapter Five Transportation and Storage eeeeeee eee eere nnn 5 1 Environment requirements on transportation and storagZe ssessersrrrrrerrrrrrrrrrrrrrrrara 5 2 IN DOR OD eoo tex tota T ca DE CS LO RA DE CC TR RR Chapter Six Check and Maintenancee cccccccccsscccccccsccccccsscsccssssscccees OS CCC Mile ys ce ecnde nanan han terimesssomtGeeeeitisses SC em ea aaah ae reas s ID M nese sedens 6 Maint palmite alie e osa dne tese dei m ooo edet oratori Lad OA Probe PA T
11. dmn ip Bl E LITERAS Remove power cord of the LCD backlight with soldering iron Finish removing motherboard step 4 Screw off these 2 screws with Phillips screw driver Take off the power supply board Finish removing PS board 58 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Seven Trouble Shooting 3 Remove LCD 7 2 3 Installation of WED 2000V WED 2000AV The installation of WED 2000V WED 2000AV is just to reverse the disassembly process Screw off these 5 screws with Phillips screw driver Take off the button board Screw off these 4 screws with Phillips screw driver Take off the LCD Finish removing LCD 7 3 Typical failures removal of WED 2000V WED 2000AV 7 3 1 PFR 1 No voltage output Check power board too see if there is DC14V adapter or DC9V 12 6V battery input or not Turn on power switch check if voltage of Q6 s pin 5 is more than 9V if not check if Q6 and power switch are damaged WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 59 Chapter Seven Trouble Shooting No output of 120v 24v 5v Check if Q3 Q4 Q5 are damaged Check voltage of both R8 R9 should be more than 0 7V No 120V output Check if L10 is open circuit Check if U6 is damaged Check if D8 D9 are damaged Check if Q8 is damaged No 5V output Check if U4 is damaged Check if D6 is damaged Check if R16 is damaged Check
12. easier to operate mouse to measure distance than to operate the keyboard 3 5 3 Heart rate measurement only under B M mode and M mode At M or B M mode acquire a satisfying heart beat waveform oscillogram first freeze the image and measure the distance between two adjacent wave peaks there will be 2 groups value acquired they are HR heart rate unit times min EF inclination unit mm s as shown in the following figure single M mode B M mode Figure 3 8 Heart rate measurement VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 33 Chapter Three WED 2000V Operation 3 6 Obstetrics calculation Operating steps The device provides gestation age measurement for horse cows sheep pigs cats dogs and other animals through parameters such as GS BL HL SL USD HD BD CRL etc to automatically display the relevant gestation age gestation weeks Operating steps Press key to display menu SWINE HL EQUINE GS BOVINE BL BOVINE SL BOVINE HL SHEEP USD CAT HD CAT BD DOG GSD DOG CRL DOG HD DOG BD WEEK DAY Repeat the above operation to select the required obstetrics table circularly After that select the distance parameter according to distance measurement method the corresponding gestation age data will automatically show below WEEK DAY details are given below D EQUINE Estimate horse gestation age according to GS Check routine on horse 1 Clean out the excreta in horse s rectum
13. optimum performance follow these instructions 1 Periodic inspection on probe cable socket and acoustic window 50 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E SYD Iu B W WH Chapter Six Check and Maintenance Shutdown the device first and then connect or disconnect the probe Do not drop probe or flint body and never hit the probe acoustic window otherwise probe should be damaged Never heat the probe Never bend or pull probe cable otherwise the internal connection should be broken Use couplant only on probe header and then clean probe Inspect probe acoustical window enclosure and cable seriously after probe cleaning Never use the probe again if any crack or breakage is found 6 7 Battery information l The equipment is fitted with rechargeable li ion battery 2 For optimum efficiency the new battery must be charged and discharged regular service not enforced discharging two or three rounds completely 3 The battery can be charged and discharged for hundred times but it will be worn out When the work time 4 oo N 0 9 10 11 12 13 14 15 16 Le 18 19 20 2 shortens apparently please replace it with a new one Be sure to use electricity charger appointed by Shenzhen Well D Electronics CO Ltd i e AC adapter to charge the battery Do not connect the battery to the electricity charger AC adapter when charging is not needed Do not connec
14. or pressure vessels Must not combine the battery with primary battery such as dry battery or battery with different capacity models and types Do not use the battery if it is smelling heating straining discolored or with other abnormal phenomena and remove it from the current consumer or electricity charger immediately and stop using it any longer Do deal carefully with the discarded battery according to local related waste handling regulations 6 8 Instrument test and calibration l Check the leakage current of the device annually referring to the following data WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 5 Chapter Six Check and Maintenance Requirements Normal lt 100 Leakage current to Continuous leakage Shell l current under normal Single Malfunction lt 500 temperature uA N l lt 100 to Patient Single Malfunction 4000V 1 min No flashover No breakdown Dielectric endurance under normal temperature V 2 Test the software of obstetrics area and circumference measurement please refer to Appendix D for detailed data 52 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Seven Trouble Shooting Chapter Seven Trouble Shooting 7 1 Device board principle and hardware pictures B ultrasound diagnoses device of WED 2000V WED 2000AV includes LCD motherboard power board key plate adapter and probes etc 7 1 1 LCD TFT display LCD TFT liquid crysta
15. position for the detecting depth meanwhile adjust the overall gain knob to acquire an optimal cross section acoustic image of the diagnostic part 3 5 Measurement Note 1 When pressing the probe on patient body do not overexert in case that the probe be broken or the patient feel discomfort 2 It is necessary to use a probe suitable for the diagnostic part and a correct frequency for diagnoses Distance circumference area and gestation age can be measured by control the keyboard or mouse Unit of distance and circumference is mm unit of area is mm unit of gestation age is VVeel Day 3 5 1 Distance measurement e Keyboarding method I At freeze mode press key to display cursor TH press ES keys to move the onto the expected point 2 2 Press key to mark the point as start point of measurement 3 Press any direction key to display another cursor and move it to the end point of this measurement Note press continuously will shift the cursor between the start and end points 4 If need several measurements repeat step 1 3 The current measurement data will be displayed on the left of the screen behind DIST Mouse operating method I Single click on mouse left key to display cursor 2 Move the cursor to the start point of measurement with the mouse and single click on mouse left key to confirm the start point 3 Move the mouse to call out another cursor and move this cursor to
16. produced and organ cross sectional images are displayed on the monitor 1 6 Device constituent 1 6 1 WED 2000V standard layout pieces Mainframe containing a piece of HYLB 331A Li ion battery S2 3 5MHz mechanical sector scan probe Manual technical instructions SP 2 power adapter containing power cord Mouse 1 6 2 WED 2000V fitting pieces Se ae ae dh d Probe S2 5 0MHz mechanical sector scan probe Video printer Sony UP 895MD Li ion battery HYLB 331A Carcharger Charging adaptation wire Shoulder bag Supporter 1 6 3 WED 2000AV standard layout pieces Mainframe containing a piece of HYLB 331B Li ion battery S2 3 5MHz mechanical sector scan probe Manual technical instructions SP 2 power adapter containing power cord Mouse 999 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 19 Chapter One Sunmary 1 6 4 WED 2000AV fitting pieces Probe S2 5 0MHz mechanical sector scan probe Video printer Sony UP 895MD HYLB 331B Li ion battery Car charger Charging adaptation wire containing power cord Se ae ae dh d 1 7 Appearance Figure 1 2 WED 2000V front sketch map DC14 VIDEO OUT MOUSE PROBE IPX7 off Figure 1 3 WED 2000V side mouthpiece sketch map 20 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter One Sunmary CONTRAST BRIGHTNESS GAIN Figure 1 4 WED 2000V underside turn button sketch map Radiating holes
17. sector Displayed Depth mm Maximal detect depth mm l lt 4 depth lt 80 5 80 lt depth lt 130 lt 3 depth lt 60 lt 2 depth lt 80 lt 1 depth lt 60 Blind area mm position Precision Vertical lt 10 lt 10 AW o Adapter power consumption 45W 8002 18 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter One Sunmary 1 4 Electric principle block diagram Receiving Regulation Focusing and Correlation M Mode Amplifying Processing Address Transmitting Control Digital Video Video Frame B Mode Regulation Composing RAM Address Crystal Diagram and Gray Oscillator Character D A Scales Control Figure 1 1 Electric principal block diagram 1 5 Basic principle B ultrasound works in this following procedure different tissues of human body possess different densities and speeds of transmission of ultrasound i e different acoustic impedance product of media density and sound speed when piezo chip transductor gets certainly regulated electric impulse it will produce ultrasound with certain frequency when this ultrasound sound energy is injected into human body different organ surfaces will produce reflection echo the different size reflection is received by the transductor which emitted ultrasound and is changed into electric impulse when this electric impulse is amplified demodulated digital scanned shifted and some other handling video standard signal is
18. 0AV Four magnifications Measuring mark key At freeze state press this key to display mark and it can be moved with direction key or the mouse At note state press this key to note patient ID age and sex Numeric charactors and direction keys At freeze state press these keys to move the measuring mark up and down left and right At note state press this key to note patient ID age sex B7 B display mode key At non note state press this key to enter B mode default mode is single B at starting up At note state press this key to note patient ID age sex BB 8 Double B display mode key At non note state press this key to enter BB mode And there will be two B mode images displayed on the screen One of them is a Frozen image and the other is a real time image Repress this key can make the two images switch between the states of Frozen or real time Press Freeze key to freeze these two images At note state press this key to note patient ID age sex BM 9 B mode and M mode display key At non note state press this key to enter B M mode Press this key to display B mode image on the screen left repress it to display M mode image on the screen right BM or B M_ for short On the B mode image there is a vertical bright line or a vertical line formed by equidistant dots which is named sampling line Atnote state press this key to note patient ID age sex 42 WED 2000V amp WED 2000AV Man
19. 2 Palpate by hand and preliminary estimate the gestation state to determine the germinal tissue for B ultrasonic scanning 3 Hold the probe and insert it into the rectum with hand on the probe closely to ensure that your hand will feel any following situation firstly Position your hand dorsal part between the rectum wall and the transducer 4 The internal structure of horse is displayed on the screen Bladder lies in the vertical crossed part the following parts are cervix tissue and uterine body Observe horizontally uterine horn usually looks in round shape Move the probe inside the rectum until the coupling section of uterine horn and uterine body is displayed and then diverse the transducer to the direction of uterine horn as the following figure shows Rectum 2 Uterine horn 3 Uterine body 4 Ovary 5 Vagina 6 Bladder Figure 3 9 Probe position in womb and ovary sketch 34 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Three WED 2000V Operation 5 The measuring method of GS diameter is given in the following figure It can go in horizontal direction or vertical direction with no difference Figure 3 10 Horse s gestation age measurement sketch 6 Measure selected parameter distance according to distance measurement method the corresponding gestation age data will automatically shows behind WEEK DAY Through measurement a chart can be made to determine growth curve and hereby to judge the
20. 2000V amp WED 2000AV Manual Technical Instructions V1 0E 35 Chapter Three WED 2000V Operation Body diameter el d Figure 3 12 Cow s body length measurement sketch 6 Measure selected parameter distance according to distance measurement method the corresponding gestation age data will automatically shows behind WEEK DAY 3 BOVINE SL Estimate gestation age according to cow stomach length 1 Make the cow in a state of stand 2 Put the probe a little bit left or right of the centre on the ventral abdominal wall closely If the 1s mud on this part clean with water first incase the abdomen pelvic structure could not be displayed accurately 3 The screen should be big enough to display the maximum stomach longitudinal length With the growth of gestation age the fetal stomach macro axis increases regularly Measuring method of stomach maximum macro axis 1s given in the following figure Stomach Heart Figure 3 13 Cow s cardiac measurement sketch 4 Measure selected parameter distance according to distance measurement method the corresponding gestation age data will automatically shows behind WEEK DAY 4 BOVINE HL Estimate gestation age according to cow heart length 1 Make the cow in a state of stand 2 Put the probe a little bit left or right of the centre on the ventral abdominal wall closely If the 1s mud on this part clean with water first incase the abdomen pelvic structure could not be displayed accurately
21. 3 To measure the heart macro axis screen should display the maximal longitudinal axis of heart With the growth of gestation age the fetal heart macro axis growths regularly Measuring method of maximal macro axis of heart is given in the following figure Figure 3 14 Cow s heart macro axis measurement sketch 4 Measure selected parameter distance according to distance measurement method the corresponding gestation age data will automatically shows behind WEEK DAY 5 SHEEP Estimate gestation age according to hilum spine length of sheep There are two methods to check pregnant ewe with B ultrasound Use convex probe or linear probe check the abdomen and recta probe for rectum These two methods are both 36 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Three WED 2000V Operation quite useful to diagnose pregnancy On the base of some publication we agree that both the methods on pregnancy diagnosis are proved to be effective With 35 days pregnancy result of rectal way is more precise than that of abdominal way During 35 to 70 days pregnancy both are equally effective After 70 days pregnancy abdominal method would be better This way would be more practical for the bigger womb Abdomen check 1 Abdomen check can be done when the ewe is standing lying or squatting Put the probe on the middle abdomen without fur and 1s set to be the proper position for checking in advance 2 If the is mud on
22. 6012EV Statement Information in this document are not annotated to change The manufacture shall not state nor observe any warranty basing on this point and definitely give up any implied warranty basing on any special purpose of selling or making benefit Without previous written permission from the producer this document must not be photocopied reproduced or translated into other languages We preserve the right of revision on this document without still further notice Some pictures in this manual which are schematic diagrams for indication only may disaccord with the real object and then the real object should be regarded as the final i E a are trade marks of Shenzhen Well D Electronics Co Ltd Any abuse of these trade marks without permission will be sued to assume legal responsibility according to laws Manufacturer s warranty Shenzhen Well D Electronics Co Ltd assumes the responsibility for device security reliability and performance only under the preconditions that the disassembly assembly and maintenance of the device are all performed by its assigned professional and the device is used strictly in compliance with the operation manual Shenzhen Well D Electronics Co Ltd ensures a guarantee period within a year and a half since the delivery day and promises there is no problem with the new device in material and technology Within the guarantee period Shenzhen Well D Electronics Co Ltd will maintain the
23. A of the adapter into the DC14V interface on the side 3 Connect power cord of Input AC220V 50Hz of the adapter to the EPS lt 0 4 No matter the main unit is power on or shut down when the under voltage indicator flickers the adapter is charging the battery When the under voltage indicator turns off from flickering the battery is fully charged Figure 2 6 2 7 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 25 Chapter Two Installtion Figure 2 6 WED 2000V charging Figure 2 7 WED 2000AV charging 2 5 2 Charging through adaptive line Optional 1 Take out the battery from the main unit or take out the spare battery 2 Connect the Charging DC12 6V 1A terminal of the adapter to the charging terminal of the battery with charging adaptive line 3 Connect power cord of Input AC220V 50Hz terminal of the adapter to the EPS 4 When the Charging indicator light on the adapter turns into red the battery is in charging When the Figure 2 8 WED 2000V charging adaptive line Figure 2 9 WED 2000AV charging adaptive line 2 5 3 Charging through auto charger Optional 1 Take out the battery from the main unit or take out the spare battery 2 Connect the flat end marked with an arrow of the auto charger to the charging terminal of the battery 3 Plug the other end of the auto charger into the cigar lighter socket 4 When the Charging indicator light on the adapter turns into red the battery is in chargin
24. Content Manufacturer Int ori ation 52 2 29 6 rana roo CXa vetus PRCIACC m a Chapter One SUMMAT cose testes ir ET dA C eUUEU M ei dUE I Dict r OCC N ger ono peat eso tents eocs teitcontr canten tetes tuta aetan e an ta tela nit 1 2 Ranbsc ob dDpHodloti is casco o ME bit iedet uH tabu olles 1 3 Technical specifications esu du ea ebat pee AREAN tien cater a ea uu edet eadeni BAN LA Blectiicalpinempal Block dia eran oes oS metes Dua renati uuu ede eee UU nea LE OE aS CHG IB sedes sector neo a I 6 De vice OBSUTUE E oed eh cia Rosen upto uU Era TRO aS m dde dates desint oiseau ADC CC Gases Dabo at mesa E Duda ea dei meten peto MD OM uo duced iaceat SRA KSEMEC Sae ME M enseri TEES Chapter Two Instalati oDer E N 2 1 Operating environmental reqUiremehtS sssssesesereereerrerrrrrrerrrrrrrrrrrrrrr rr rer rer rese ees 2 2 Unpackinbs INS PE ClO oco db No os RS GS UC Sots RS SENS OA USE ARS 2 3 Installation and disassemblYy ssssssessessesreerrerrrrrerrrerrerrrr UAR rr aci ERR NR rr xq RI FOIE 2 3 1 Connection between probe and main unit eres reti testes voee rr ve este i ter r ran 23 2 Installimp and disassembling battery o one oo testa tala RE 2A POWT SUD DIY AE ERE NEANDER 241 POWET SUPPLY ada DI Cisa eta mente io mates o is cistee TCR OREERTER EE mei te comes el edens 221 2 SAUCY Opero Nenne i E NND Mau ee cens Dy Mee ye a NO etc estoc SAS alat MM ae a eatin ote IAE ADEM M
25. Default YMIR SELNES IEC 1157 4 2 2e setting Distance form the transducer output face to the point of maximum pulse pressure squared Lp mm integral IEC 1157 4 2 2f GdB pulse width i 2 91 7 Wpes mm IEC 1157 4 2 28 L 4 19 Pulse repetition rate Ey pa IEC 1157 42 2h is M scan rate Dome ec te Dimensions parallel II and l perpendicular to the reference direction shall be specified For scanning modes these shall refer to the central scan line only In many cases especially contact systems these dimensions may be taken as the geometrical dimensions of the ultrasonic transducer or ultrasonic transducer element group IEC 1157 4 2 21 Arithmetic mean acoustic working frequency SE IEC 1157 4 2 2j 30s Acousti up fraction IEC 11 57 42 24 ili ee In system in which the user defines the power up mode this shall be stated as either 13 Power up mode user defined or not applicable n a B mode IEC 1157 4 2 21 Acoustic initialization fraction If appropriate in systems in which the user defined the initialization mode this shall be 15 Initialization mode stated as either user defined or not B mode applicable n a IEC 1157 4 2 2n If the system has acoustic output freeze then Accoustic output this shall be stated as yes otherwise it shall l 6 yes freeze be stated as no IEC 1157 4 2 20 72 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E aN
26. ELE UU a Z Charging through man ubt uideo o du oa ete used rot v e epu I bU RA EA c diana 2 5 2 Charging through adaptive line optional 0 0 cece cece cece cece cece cece rr er rer rer enone 2 5 3 Charging though auto charger Optional ccc ccc ccc cece cece eee ceee eee iii LL Chapter Three WED 2000V Operation eee eee eer rne nnn oN Key bOald RITNISL UP QR DI no SS ENS TT TT So Measure mM I as eei ries ond te eae qucd esau ote nae cedes du Mar UR nat ate ames COMMI iC measure meN EET D 0 OO LSU 3 5 2 Circumference and area measurement ssossoseessersererrerrerrrrrerrrrrrrrrrr rss n sss 309 Hear rate qmedsure tie ib e ue estels ac sta ten ea se ier Ode Eo Ue Mean tesi ei SAR Bottes 3 90 OBES Calcula Ona coses sive aac anne Meare dia d cha ELDER DA COD Ope MOORE S T NOOD eoria senere rdr R d 3 LI Notecase history number ID soe oiu P voie Or p ee te pre tix ene pu abe to ds dd 3 152 NOLS patient abe AOE s toco en edad wala celal diab a Bee cam acuta fuste ea selecte Utt 3 75 95 Note Dalient Sex 5B us ecieded peto keen Tod temes te tec Nola Sader Sone ENS BOAO D eats hater e tac ee aed cet ordi LAM SLM LLL EI tL um CU Ded DE WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Content Content 329 SHUEGOW mth Gey ICC ood o oan tL E Seiwa heed oh cia atleta atac NAR agent Chapter Four WED 2000AV Operation eee eee eere LLUIS CV DO ACN CIONS eres
27. IN ead Aa TROP EE 70 Appendix B Test REPO 55s ioseo dee ERE nomes menes tios mem NNI mis it 71 TABLE Summary of the acoustic quantities 52 3 5HMz B Mode sesseeueeeee 71 TABLE Summary of the acoustic quantities S2 3 5HMz M Mode ssssssesereresersssssssssrssssssenrn nr 72 Appendix C Acoustic output reporting table sssssssssesssssseressesrerere 73 Appendix D ODSU t EICS ccrich ue etr roni ul s cet VIRI DEI assem EE EUR DUDE TIN 71 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 3 Manufacturer Information Manufacturer Information Name Shenzhen Well D Electronics Co Ltd Add F12 N F13 New Energy B D Nanyou Ave Nanshan District Shenzhen 518054 Guangdong P R China Tel 0086 755 26073353 0086 755 26073350 Fax 0086 755 26411198 Email export welld com cn Authorized agency in EU Name Wellkang Ltd Add Suite B 29 Harley Street LONDON WIG 9QR England United Kingdom Tel 44 20 88168300 88168309 79934346 79276844 Fax 44 20 76811874 Web www CE marking com www CE marking org www CEmarking org E mail AuthRep CEmarking org CE mark CC 4 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Preface Preface Copyright This publication including pictures and illustrations is property of Shenzhen Well D Electronics Co Ltd and under protection of international copyright law Version 1 0E Ist edition in June 2006 P N No WED 20 0
28. NE Tra Cd sar tas esde Paw REA tust RNE tecles NE AR SA a rt RNA NS OC CAS UB rns b ra nd Be DES ECO CES or teense han eee AES DILE DE OSS 6 6 COL US ADC OF DIODG4 etus civ to PRAE ERR REA are eee 6 Baten norma T coo at tacar eG CMM ILE LM M d est d ei cet E e 6 8 Instrument test and CalibratiOn ssserrerssersererrerrrrrrrrrrrrrrrrr rer esee Chapter Seven Trouble Shooting 2 dose orta See aa e epa petu Pa eura PERDU Neue Par CES 7 1 Device board principle and hardware pictures 00 cc cccccc cece eee c cece cece dada eran TN ECTS Pla TEILT citelGienes TAZ MOEDA irna bated anche et eatise ae dca liked tot tat ee bate sta Cat TALS Power DOBLE ee ok LI Eq M ELM ae TUNI es qo I S a estela vagen ERECTO EEG SANNE DA eT OIG de RT T cT T2165 EE Gostedd statuis toe ne as eed Leena cia saat Pree eaten MOUSE ea 7 2 Installation and disassembly of WED 2000V WED 2000AV ccceeeseeeeeeeeeeeeeees 7 2 Disassembly or WED 2000 V recital a Met UT bam ded e ti pe 72 2 Disassembly OL WED2000 V tuc sestutatan ea Ier a el end cet eve bod eger VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Content 7 2 3 Installation of WED 2000V WED 2000AV asssrrrersrseressssssrrrrrrrreresresrerrrressernr rn nan 59 7 3 Typical failures removal of WED 2000V WED 2000AV ssssserseseressesserserrrerrerrerrerr ren 59 fM UI LITT T 59 1 5 2 Bakery cannot De C Maree diues ao dann a sr
29. Ultrasonic Diagnostic Equipment MODEL POWER DC14V POWER CONSUMPTION SAFETY TYPE MANUFACTURING DATE 10640 S N VC 0640XXX MANUFACTURER SHENZHEN WELL D ELECTRONICS CO LTD ADD F12N F13 New Energy B D Nanyou Ave Nanshan District shenzhen 518054 Guangdong P R China 9 WED 2000AV device main probe nameplate diagram 2 5 0MHz 11 WED 2000AV battery nameplate diagram Polymer Li Ion Battery Pack Model HYLB 331B Description 11 1V 2200mAh Specify WED 2000AV Max input Voltage 126V PINBT3318 2006 0340 Standard GB T 18287 2000 RN Donotdispose ofin fire or putinto water BE Donotdisassemble or short circuit ZEN m Donotusein high temperature ornear a heat source NING SHENZHEN WELL D ELECTRONICS CO LTD 12 WED 2000AV Auto charger diagram art Qu 13 WED 2000AV adapter diagram VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 69 Appendix A AC Adapter w JI ELL DTIC CR IL bade ia Chim Braus d Ho disasentlel dE Thr alg er only f r cara the decimal ed mile SP 2 r aluke 0E HP a 3 9 14 WED 2000AV packing diagram o Storage and transportation condition Temperatura 20C 5517 C Relative humidity range 10 100 Y Atmospheric pressure range 50KPa 106kKPa B Ultrasonic Diagnostic Equipment MODEL QTY l IU La E G Wi na MEAS 45543604 160mm Manufacturer Shenzhen Well D Electronic Co Ltd Add Blo
30. V Auto charger diagram ar Qu WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 67 Appendix A 6 WED 2000V adapter diagram bic in Chim Bru d Ho disazemhl e 1 Thr alg er only Tar cara the decimal ed dienes SPE 1 00 2 Ok HP 9 0 7 WED 2000V packing diagram storage and transportation condition D Temperatura 20 C 55 C C Relative humidity range 10 100 Atmospheric pressure range 50KPa 106KPa B Ultrasonic Diagnostic Equipment MODEL ________ Q TY 3 GW MEAS 455X360X160mm Manufacturer Shenzhen Well D Electronic Co Ltd Add Block North 12 F 13F NewEnergy Bldg Nanyou Rd Nanshan District Shenzhen Guangdong 518054 P R China Tel 0086 755 26073353 Fax 0086 755 26411198 http www welld com en E mail export welld com cn ma m NE AN A Il Storage and transportation condition Temperature 20 C 55 C Relative humidity range 10 100 Atmospheric pressure range 50KPa 106KPa B Ultrasonic Diagnostic Equipment MODEL OTY 1 3 GW MEAS 455X360X160Mm Authorized Representative Wellkang Ltd Add Suite B 29 Harley Street LONDON W1G 90R England United kingdom Tel 44 20 88168300 Fax 44 20 76811874 S http www CE marking com E mail AuthRep amp CEmarking org ZN se be 8 T LP a 68 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Appendix A 8 WED 2000AV device nameplate diagram B
31. a EE canoe oem Ud DE BU dU UE 60 73 3 Motherboard Tallute TeroValaso sess a6 tabu es ra tpe UP meres PeeloDe ede ud unt end hose opos 60 ADDODUIX X cocer tiec or PE RETRPEEIR ER IUE OH PURI ER DUI OH TIN ETERN NES ENARE 67 L WED 2000V device nameplate diagtam db oe oboe tue gehe tex Used SAR SERENA qe ibo das 67 2 WED 2000V device main probe nameplate diagr amM sssssssersersrerrerrrrrrrrrrrrrr reser rer ra 67 3 WED 2000V device optional probe name plate diagr am s sseseorserrerrerrrrrrererr reor aa 67 4 WED 2000V battery nameplate diagram sssssssssssssss meme meme 67 3 WEDZ2000N Auto chatger diagrami 2 cor eto e ep E RU tUe RUE ead cd etus 67 6 WED 2000 V adapter dia orati etus abesse estes REI recels ER bU star EA RE URS 68 Te WBD 2000V packing diagramei vr tA Re qe ette pe este petiam RA 68 8 WED 2000AV device nameplate diaptam 4 ic eti aeta ii eee oe eo EA EE SE REPE NRA 69 9 WED 2000AV device main probe nameplate diagr lm ssssssserseersrererrrrrrrrrrrrr rer er ran 69 10 WED 2000AVdevice optional probe name plate diagram 00 cece cece eee eee eeeeeeees 69 11 WED 2000AVbattery nameplate diagram ccc ccc cece cece cece eee e cece eee ee rer reser a 69 12 WED 2000AV Aute Chatceer diagram ocina tec ec RANKAR RR EES 69 13 WED 2000AV adapter diagralm ssssoseeseesserrserrerrerrrrrrrrrrrrrr III III Hm rrr 69 14 WED 2000AV packing diactan ie co e eS EHE bade oa ea PEN U
32. ain compensation TGC amplifying circuit on the channel plate Then go through digital image processing frame correlation line correlation gamma correction grey level transformation image plugging electronic amplification etc Together with character signals are synthesized into digital video signal Finally it is changed into analog PAL D signal via D A translation circuit for displaying on TFT LCD i Wine Be al Fa pec i i ut mmc Motherboard picture VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 53 Chapter Seven Trouble Shooting 7 1 3 Power board The power supply input can be adapter DC14V or battery DC9V 12 6V it adopts 5 group DC DC transition puts out 5V SV 12V 24V 120V voltage respectively Adapter input Input charging circuit 4 gt 24V DC DC 5V DC DC 5V DC DC 120V DC DC 24V output 5Voutput SVoutput 12Voutput 120Voutput Power supply board diagram 7 1 4 Key plate Key plate adopts matrix type structure and is connected to XS5 of the motherboard via 18 core socket The motherboard fulfils key plate scanning WED 2000AV key plate picture front WED 2000AVkey plate picture back 54 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Seven Trouble Shooting 7 1 5 Probes Regular probe picture with freeze key waterproof probe picture 7 1 6 Battery Ja p pirum d 5 E 2 WED 2000V batter
33. attery may VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 7 Preface cause explosion fire and other unexpected hazards 10 Must not short circuit the output of the adapter a long term short circuit shall result in adapter damage 11 Please use standard power cord as the input line of the network power supply for the adapter to reduce risk 12 Shenzhen Well D Electronics Co Ltd shall not take any responsibility for any risk resulted from propelled unauthorized re fitment by the users 13 To disconnect the device from the power supply network by unplug the adapter from the power supply network 14 Ultrasound might cause hazard on human body so long time radiation should be avoided Refer to appendix B and C for sound output parameters Execution Standard Safety e Safety Standard china Standard Number Standard Name GB9706 1 1995 Medical Electronic Device Part I General safety Requirements GB9706 9 1997 Medical Electronic Device Specialized safety Requirements for Medical Ultrasound Diagnosis and Monitor Device Europe Standard Number Standard Name IEC60601 1 1988 LA 1 1991 A2 1995 Medical Electronic Device Part I General safety requirements Medical Electronic Device Part I to II General Safety Requirement Parallel OR Standard Requirement and Testing of Electromagnetism Compatibility IEC60601 1 4 2000V Medical Electronic Device Section I to IV A Program controlled M
34. ck North 12 F 13F NewEnergy Bldg Nanyou Rd Nanshan District Shenzhen Guangdong 518054 P R China Tel 0036 755 26073353 Fax D086 755 26411198 http cwww welld com en E mail exportewelld com cn NE rel Si a o Storage and transportation condition D Temperatura 20 C 557 C i Relative humidity range 10 100 hn MET Atmospheric pressure range 50KPa 106KPa B Ultrasonic Diagnostic Equipment MODEL QTY l GW MEAS 455X380X160mm Authorized Representative Wellkang Ltd Add Suite B 29 Harley Street LONDON WIG SUR England United kingdom Tel dd 20 88168300 Fax d4 20 76811874 PA http www CE marking com E mail AuthRepa CEmarking ore LU Modification on the above information may not be further notified 70 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Appendix B summary of the acoustic quantities S2 3 5MHz B Mode Test Mode B MODE Transducer Type S2 3 5MHz Transducer No AP0530546 DIL ee REN Lee Se pe m Soatial peak temporal average derived Ispa mW em intensity IEC 1157 4 2 2d Distance form the transducer output face to the point of maximum pulse pressure squared Lp mm integral IEC 1157 4 2 2f 6dB pulse width e 2 Wpos mm IEC 1157 4 2 28 L 420 KH Pulse repetition rate prr K Hz IEC 1157 4 2 2h mr Scan rate Dimensions parallel SET MEN Jand perpendicular to the reference direction shall be specified For scanning modes these shal
35. ctions V1 0E Chapter Seven Trouble Shooting Logarithmic compression circuit output Dynamic filter circuit output U13 TL441 pin 5 6 10 11 waveform U14 pin 4 waveform Forestage amplifying circuit output VBP curve waveform V21 emitter waveform U8 TLO84C pin 14 waveform c If there is return signal output in channel section problems occur with DSC section Emphases should be on checking A D transfer circuit Main Memory control circuit and image processing circuit etc Since the display of gray scale bar character is normal it means D A circuit and the sub level circuits are in working order d Image display is also under the influence of SCM so SCM working state should also be noted during inspection Mainly take substitution method and characteristic test to check SCM Test emphases should be on control signal waveform and level characteristics of image processing circuit of SCM e Repair or replace the board with problems WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 63 Chapter Seven Trouble Shooting 4 No character display but image display is normal 1 Possible reasons a b c d DSC section image processing chip failure Character signal synthesizing section failure DSC section character storage failure DSC section SCM failure 2 Inspection methods a b First check if there is output from character synthesizing circuit R25 V27 V28 Mainly take substitut
36. detecting depth meanwhile adjust the overall gain near field gain far field gain or concentrate the focus to acquire an optimal cross section acoustic image of the diagnostic part Note 1 When pressing the probe on patient body do not overexert in case that the probe be broken or the patient feel discomfort 2 It is necessary to use a probe suitable for the diagnostic part and a correct frequency for diagnoses 4 5 Measurement Distance circumference area and gestation age can be measured by control the keyboard or mouse Unit of distance and circumference is mm unit of area is mm unit of gestation age is Week Day 4 5 1 Distance measurement e Keyboarding method 1 At freeze mode press key to display cursor press keys to move the onto the desired point 2 Press key to mark the point as start point of measurement 3 Press any direction key to display another cursor and move it to the end point of this measurement Note press continuously will shift the cursor between the start and end points 4 If need several measurements repeat step 1 3 The current measurement data will be displayed on the left of the screen behind DIST Mouse operating method I Single click on mouse left key to display cursor 2 Move the cursor to the start point of measurement with the mouse and single click on mouse left key to confirm the start point 3 Move the mouse to call out ano
37. device and replace the parts of non man made damages free of charge But will not repair or replace the device surface if it is damaged This guarantee is only available for failures occurred when the device is operated in compliance with the operation manual And the guaranteed device can only be used in the prescribed range given in manual This guarantee excludes losses or damages caused by external reasons such as thunder struck earthquake theft unsuitable use or abuse and refitting the device Shenzhen Well D Electronics Co Ltd shall not be responsible for damages caused by other devices or arbitrary connection to other devices Shenzhen Well D Electronics Co Ltd shall not be responsible for losses damages or injuries caused by delayed service request When there is problem with the products please contact Shenzhen Well D Electronics Co Ltd and explain the device model serial number date of purchase and the problem Matters need Attention To ensure operational safety and long term stable equipment performance please read this operation manual closely and understand the device functions operation and maintenance at all points before operating the device especially contents of Warning Caution and Note Misoperation or inobservance of the instructions given by manufacturer or its agents may result in device damage or personal injury The following convention works through this manual to lay special emphasis on some i
38. disassembly 2 3 1 Connection between probe and main unit Probe jack lies in the top of the right side insert the probe into the jack correctly and turn it clockwise and wound it There is only one probe jack which can connect to all the supported optional probes Dismounting is the reverse process of installation WED 2000AV probe placement and take out Insert the probe into the probe supporter to set it and push to slide the probe form the supporter to take out it Figure 2 1 Figure 2 1 WED 2000AV probe placement and take out WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 23 Chapter Two Installtion 2 3 2 Installing and disassembling battery Install WED 2000V battery Set the battery into the battery slot and move the battery release key on its side to top till the battery is inserted completely and then release the key refer to figure 2 2 Battery release key Figure 2 2 WED 2000V battery installation Disassemble WED 2000V battery It is the reverse process of installation refer to figure 2 3 Battery release key Figure 2 3 WED 2000V battery disassemble Install WED 2000AV battery Set the battery into the battery slot and move the battery release key on its back to top till the battery is inserted completely and then release the key refer to figure 2 4 Battery release key Figure 2 4 WED 2000AV battery installation Disassemble WED 2000AV battery It is the reverse process of installation
39. e pack the device according to the instructions on the packing Store it properly in the warehouse The storage environment should accord with 5 1 Transportation and storage environmental requirements 6 4 Probe maintenance Probe is an expensive part and frangible Never hit it or drop it on floor Please use medical ultrasound couplant during diagnoses Do daily inspection on the probe enclosure to see if it is cracked and avoid liquid leakage to spoil the built in components Check the probe regularly to see if it 1s filled with clean medical castor oil lest the existing air bubbles influence the image quality If air bubbles appear turn the probe oil filler hole up and screw off the sealing screw turn the probe slowly to drive the air bubbles to the screw hole infuse a little bit of castor oil into the screw hole with syringe with a needle refer to figure 6 1 vent the air bubbles and fasten the sealing screw and finally clean the oil stain on the probe surface WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 49 Chapter Six Check and Maintenance Oil iniection hole Probe chip HZD Scanning direction Figure 6 1 Mechanical sector scan probe oil injection and scanning direction 6 5 Cleansing 1 When the enclosure need cleaning wipe it with soft dry cloths and then wipe gently with sponge dipped with 75 medical alcohol 6 6 Correct usage of probe In order to prolong probe s service life and obtain
40. e to unexpected situation or mis operation press this key to restore the device NOTE Note key Press this key to note patient ID age sex at freeze state Tip Note function is only available at Freeze state and meanwhile the numeric characters are available CLS Clear the screen Clear off the measured marks results and so on displayed on the screen at freeze state M 0 Single M display mode key At non note state press this key to enter the device into M mode At note state press this key to note patient ID age sex Tip It is a must to enter B M mode first before entering M mode and the M mode mage is real time 40 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Four WED 2000AV Operation BEP 160 B M mode single M mode Figure 4 2 WED 2000AV Four display modes images ZOOM 1 Image magnification key At note state press this key to note patient ID age sex At real time scanning state this key is used for image magnification There are 4 image magnifications Press the key continuously to enlarge the image at different rates The penetration depth is displayed at the bottom Display depth mm magnifications S2 3 5MHz mechanical sector probe S2 5 0MHz mechanical sector probe EBENE RN WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 41 Chapter Four WED 2000AV Operation Depth 160mm x1 2 Depth 130mm x1 5 Depth 096mm x2 0 Figure 4 3 WED 200
41. earby electronic equipment RF emission inui ue The specimen of VVED 2000V is suitable Class B for any facility including household and IEC61000 3 2 public low voltage supply network for households Voltage fluctuations flicker emissions Complies IEC 61000 3 3 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 13 Preface Guidance and manufacture s declaration electromagnetic immunity For EQUIPMENT and SYSTEMS that are not LIFE SUPPORTING Guidance and manufacture s declaration electromagnetic immunity The WED 2000AV Ultrasonic Diagnostic Equipment is intended for use in the electromagnetic environment specified below The customer or the user of WED 2000AV Ultrasonic Diagnostic Equipment should assure that it is used in such an environment Immunity IEC 60601 Compliance Electromagnetic environment guidance test test level level Portable and mobile RF communications equipment should be used no closer to any part of the WED 2000AV Ultrasonic Diagnostic Equipment including cables than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter Recommended separation distance 3 5 de LV J VP 3 5 3Vrms d Ei JP 80 MHz to 800 MHz 150 kHz to 80 MHz 7 IEC 61000 4 6 d El VP 800MHz to 2 5GHz Where P is the maximum output power rating of the Conducted RF Radiated RF 3V m transmitter in watts W
42. ed output Power mw Attenuated output power 0 01 0 006 mw Spatial peak temporal average 0 05 1 09 intensity my cm Attenuated spatial peak temporal average 0 03 0 28 intensity mw cm I HSE ensiy 56 08 17 53 integral uj em Attenuated Pulse intensity 13 53 A 51 integral uj em Peak rarefactional acoustic 1 36 pressure MPa Attenuated peak rarefactional acoustic pressure MPa 1 2dB output beam area cm Equivalent aperture diameter cm Depth for TIS em aa QS ot DS NS Depth for TIB em J l J Depth at max attenuated pulse intensity integral cm supplementary information a Transducer Model S2 5 0MHz b Transducer serial No AP0570204 74 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Appendix C Acoustic output reporting table System Model WED 2000AV m x TS ms TS mb T Tic Non Non scanning scanning Mogg Scanning Scanning e Aaprt gt ae lem Acoustic working ps MHz i EE output Power 47 247 mw Attenuated output power 0 01 mw Spatial peak temporal average 3 03 intensity my cm Attenuated spatial peak temporal average 1 04 intensity mw cm dd ety 59 02 48 62 integral uj em Attenuated Pulse intensity 20 23 16 67 integral uj cm Peak rarefactional acoustic 1 36 pressure MPa Attenuated peak rarefactional acoustic pressure MPa 1 2dB output beam area
43. edical Electronic System Medical Electronic Device Specialized Safety Requirements for Medical SORAN Ultrasound Diagnosis and Custodial Care Facility Requirements for the Declaration of the Acoustic Output of Medical Ultrasound IEC6 l 157 1992 Diagnostic Apparatus e EMC Electromagnetic Compatibility Standard 8 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Guidance and manufacture s declaration electromagnetic emissions For all EQUIPMENT and SYSTEMS Guidance and manufacture s declaration electromagnetic emission The WED 2000V Ultrasonic Diagnostic Equipment is intended for use in the electromagnetic environment specified below The customer of the user of the WED 2000V Ultrasonic Diagnostic Equipment should assure that it is used in such and environment Emission test Compliance Electromagnetic environment guidance RF emissions Gein CLSPR 11 P RF emission Harmonic emissions Voltage fluctuations flicker emissions Complies IEC 61000 3 3 The WED 2000V Ultrasonic Diagnostic Equipment uses RF energy only for its internal function Therefore its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment The specimen of WED 2000V is suitable for any facility including household and public low voltage supply network for households WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Preface Preface Guidance a
44. electromagnetic immunity for all EQUIPMENT and SYSTEMS Guidance and manufacture s declaration electromagnetic immunity The WED 2000V Ultrasonic Diagnostic Equipment is intended for use in the electromagnetic environment specified below The customer or the user of WED 2000V Ultrasonic Diagnostic Equipment should assure that it is used in such an environment Immunity test Electrostatic discharge ESD IEC61000 4 2 Electrical fast transient burst IEC 61000 4 4 Surge IEC 61000 4 5 Voltage dips short interruptions and voltage variations on power supply input lines IEC 61000 4 11 Power frequency 50Hz magnetic field IEC 61000 4 8 IEC 60601 test level 6kV contact 8 kV air 2kV for supply lines 1kV for input output lines power IkV dofferemtoal mode 2kV common mode lt 5 Ur 2 959 dip in Ur for 0 5 cycle 40 Ur 60 dip in Ur for 5 cycle 70 Ur 30 dip in Ur for 25 cycle lt 5 Ur gt 95 dip in Ur for 5 sec Compliance level 6kV contact 8 kV air 2kV for supply lines power IkV dofferemtoal mode lt 5 UT 2 9595 dip in UT for 0 5 cycle 40 UT 6096 dip in UT for 5 cycle Electromagnetic environment guidance Floors should be wood concrete or ceramic tile If floors are covered with synthetic material the relative humidity should be at least 3096 Mains power quality should be that of a typical commercial or ho
45. endix C Gestational Table Appendix C Gestational Table Gestational Table 1 Equine Measurement mm Gestational Sac Diameter NI C CO O gt HA ND C ND BO J BO O gt RIND l 4 l CI lec OT cn JS la A A cw l eo All measurements 3 days VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E TI Appendix C Gestational Table Gestational Table 2 Bovine Measurement mm Week Day Body Length NO NO All measurements t 3 days 78 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Appendix C Gestational Table Gestational Table 3 Sheep Measurement mm he l Week Day Umbilicus to Spine Distance All measurements 3 days WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 79
46. following symbol 2 NOTE At 80 MHz and 800 MHz the higher frequency range applies NOTE2 These guidelines may not apply in all situations Electromagnetic propagation is affected by absorption and reflection from structures objects and people a Field strengths from fixed transmitters such as base stations for radio cellular cordless telephones and land mobile radios amateur radio AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy To assess the electromagnetic environment due to fixed RF transmitters an electromagnetic site survey should be considered If the measured field strength in the location in which the WED 2000V Ultrasonic Diagnostic Equipment is used exceeds the applicable RF compliance level above the WED 2000V Ultrasonic Diagnostic Equipment should be observed to verify normal operation If abnormal performance is observed additional measures may be necessary such as reorienting or relocating the WED 2018 Ultrasonic Diagnostic Equipment b Over the frequency range 150 kHz to 80 MHz field strengths should be less than 0 5V m 10 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Preface Recommended separation distances between portable and mobile RF communications equipment and the EQUIPMENT or SYSTEM for EQUIPMENT or SYSTEM that are not LIFE SUPPORTING Recommended separation distances between portable and mobile RF communications equipment a
47. g When the Charging indicator light turns into green the battery is fully charged Refer to figure 2 10 2 11 Figure 2 10 WED 2000V charging through auto charger 26 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Two Installtion Figure 2 11 WED 2000AV charging through auto charger Tips 1 The input voltage of the auto charger is DC9 14V 1 5A 2 The output voltage of the auto charger is DC12 6V 1A 3 The operations and storage environment are the same as those of the main unit WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 2 4 Chapter Three WED 2000V Operation Chapter Three WED 2000V Operation 3 1 Keyboard functions WED 2000V keyboard is given below POWER CHARGE B 0 BE BMI2 M 3 MAGNA T 5 6 FREEZE RESET NOTE O B CLS DIST 9 ds B T 1 Figure 3 1 Operating panel FREEZE Image hold Image hold or return to real time image RESET Reset the device When the device breaks down it does not work when you press any key due to unexpected situation or mis operation press this key to restore the device NOTE Note key Press this key to note patient ID age sex at freeze state Tip Note function is only available at Freeze state and meanwhile the numeric characters are available CLS Clear the screen Clear off the measured marks results and so on displayed on the screen at freeze state B 0 B display mode key At non note state press this key to en
48. ge display check if luminance potentiometer and contrast potentiometer are out of service If WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Seven Trouble Shooting yes replace them If the potentiometers work well it means there is problem with LCD or its drive circuit Replace LCD to see if there is image display If no LCD drive circuit is broken and needs repairing First check voltage or signal of 24P mouthpiece of LCD they should be GND 5V 5V GND 5V 45V 13V 13V 24V contrast control input B blue signal GND G green signal GND R red signal NC NC 5V NC NC contrast control output F F Control VD signal HD signal LCD drive circuit schematic dam is given below Cutoff eis te Input offset i r c Yo Center B G COM control F F Output HD VD CP 20 kA a E Pulse Modulation il EL Io PPP IPE PS US Current Conversion T ar 34 4 J B a RK B G R Leno 7 r Channel Mode Channel Input BS H Input RS H 5c 5 COM vec Drive 24 V TA8696F Circuit schematic drawing c If external monitor has no display there is problem with main unit Check if mains input of motherboard is normal If yes repair or replace the mother board When repairing the mother board first check if there is signal output from triodes V27 V28 LM318 U16 resistor digital to analog conversion circuit R11 R13 R17 R19 R23 R25 EP IK10TC144 3 U6 or not If no ai
49. gestation age corresponding to the embryo size Gestation age calculation begins from the copulation day instead of the impregnation day 2 BOVINE BL Estimate gestation age according to cow body length Check routine on cow 1 Clean out the excreta in cow s rectum 2 Palpate by hand and preliminary estimate the gestation state to determine the germinal tissue for B ultrasonic scanning 3 Hold the probe and insert it into the rectum with hand on the probe closely to ensure that your hand will feel any following situation firstly Position your hand dorsal part between the rectum wall and the transducer 4 The internal structure of cow is displayed on the screen Bladder lies in the vertical crossed part the following parts are cervix tissue and uterine body Observe horizontally uterine horn usually looks in round shape Move the probe inside the rectum until the coupling section of uterine horn and uterine body displayed and then diverse the transducer to the direction of uterine horn as the following figure shows I Rectum 2 Uterine horn 3 Uterine body 4 Ovary 5 Vagina 6 Bladder Figure 3 11 Probe position in womb and ovary sketch 5 To measure fetal body diameter a vertical section should be selected that 1s a plane covers from both sides through fetal neck chest cavity and abdomen Body diameter could be measured within 60 to 150 days gestation Body diameter measuring method 1s given in the following figure WED
50. he main unit of WED 2000V WED 2000AV is conventional device the probe is a device of resistance to flooding Classify according to shockproof type WED 2000V WED 2000AV is Group II device powered by external adapter Classify according to shockproof level WED 2000V WED 2000AV is Type B Applied part General tips for device operation In operation I Heat radiation holes are strictly prohibited to be covered 2 After closedown do not switch on the device within 2 3 minutes 3 On scanning if any abnormal case is found stop scanning immediately and shut down the device After operation 1 Power off the device 2 Pull out the plug from power supply socket instead of pulling the cable 3 Clean off the couplant on the probe with soft medical sterilized cotton ball General Safety Message Safety of the operator and patients and reliability of the device are taken into consideration during designing and producing the following safety precaution must be implemented I The device shall be operated by qualified operating staff or under their instructions 2 Do not open the device and change the parameters without permission If necessary please turn to for Shenzhen Well D Electronics Co Ltd or its authorized agent for service 3 The device has already been regulated into its optimal performance Do not adjust any preset control or switch unless operate as per instructions in the manual 4 If there is device failure p
51. if L5 is damaged No 24V output Check if US is damaged Check if D7 is damaged Check if L11 is damaged Check if R20 is damaged No 5V output Check if U1 QI are damaged Check if U3 Q7 are damaged 7 3 2 Battery can not be charged Connect the main unit with adapter DC14V power supply Take out battery check the battery seat A4 pin 1 and pin 4 their voltage should be 12 6V If it is normal battery is broken If not check U8 Q2 is damaged or not 7 3 3 Motherboard failure removal 1 Probe operates well but LCD urns on blank screen Check C8 its two terminal voltages should be 3 6V If not normal check U3 U4 on motherboard Check the power cord of LCD to see if it is false welded or broke off 2 Video output normal LCD turns on blank screen Check if triode V27 on motherboard is damaged Check if VR1 on power board is damaged 60 1 Check a LCD is not power on b LCD failures c Cable from main unit to LCD is not well connected d Main unit is not power on e Main unit failure 2 Inspection methods a First check if the coaxial line from main unit to LCD is connected well or not If ok use external monitor to check if there is video signals output from main unit If the external monitor has image display it means there 1s problem with the LCD or its drive circuit b Check if the LCD mains input is normal or not If ok check if back light is turn on If back light is on but no ima
52. iled and do not place it closely against the floor walls or roof Keep it well ventilated do not expose it to strong sunlight or caustic gases 48 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Six Check and Maintenance Chapter Six Check and Maintenance 6 1 Service life The service life of the device is 6 years Note The Discard the device according to local law Do not discard it mixing with other household garbage 6 2 Check Check the device power cord and probe cable and waterproof cover if find any damage or breakage must not use the device and replace the broken immediately Check if the probe and main unit are connected rightly Check the adapter EPS regularly when the supply voltage exceeds specified accommodation limit AC100V 240V 10 50 60Hz Do not supply the main unit or charge the battery with adapter Check the adapter power cord and probe cable if find any damage or breakage replace the broken immediately Adapter is the dedicated power of the device it adopts omniseal insulation design do not replace it with other adapters or attempt to open it incase there be any hazard 6 3 Main unit maintenance Instrumentation environment should accord with 2 1 operation environmental requirement If device enclosure needs cleaning shutdown the device first and then wipe with alcohol sponges Device should not turn on and off frequently When the device does not work for a long tim
53. ion method and characteristic test to detect this failure When checking emphases should be on control signal waveform and level characteristic of SCM Ul W78ES58B and image processing U6 EP 1K10TC144 3 Repair or replace the motherboard with problems 5 Input failure with keyboard 1 b b Possible reasons Keyboard key failure Keyboard interface circuit and 18P coaxial line of DSC section failure DSC section SCM failure Keyboard interface power supply failure Failure isolation method First check if every key fails when putting in If all key fail check if 18P coaxial line of the key board is not connected well or the leader is broken Replace with a new key board if failure disappears it means there is problem with key board If failures occur with some key or a group of keys repair the key board Check keys with problem to see if there is poor contact oxygenation or leader breakage Check interface circuits of motherboard and their power supply integrated circuit U1 U11 U20 Replace SCM of the same model ie soft hardware of the same model and check the peripheral circuits 6 Non response of mouse 1 Possible reasons a b c 64 Mouse no mains input Mouse failure DSC section mouse serial communications circuit failure VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E d Chapter Seven Trouble Shooting DSC section SCM failure 2 Failure isolation method a b c
54. l display technology adopts active matrix as its driving mode It is a kind of AM LCD in active matrix LCD families There are special light pipes on the back of TFT which can control each pixel of the display actively It utilizes matrix form electro crystal electrode array manufactured with thin film technology to control the On and Off of every display point actively by scanning The light source penetrates the lower polaroid upwards and transfers in virtue of liquid crystal molecules When electrodes are conducted the electric field will rotate liquid crystal Because molecular refractivity of the liquid crystal changes with liquid crystal direction The result is the deflection polarity of light 1s changed when going through liquid crystal molecules ie transmissivity of light is changed thus to achieve the purpose of displaying by shading and light transmission 7 1 2 Motherboard Motherboard offers voltage impulse for piezoelectric vibrators to release ultrasound and receives and disposes the return signal ie return signal pre amplification dynamic filtration I time gain compensation TGC amplification dynamic filtration T logarithmic compression demodulation edge enhancement and other analog signals processes The processed signals are sent to DSC numerical part DSC part work to translate analog return signal digital signal A D At the same time generates STC and VBP signals of control the dynamic filter circuit and time g
55. l refer to the central scan line only In many cases especially contact systems these dimensions may be taken as the geometrical dimensions of the ultrasonic transducer or ultrasonic transducer element group IEC 1157 4 2 21 Arithmetic mean acoustic working frequency oe IEC 1157 422j E Acoustic power up fraction IEC 1157 4 22k 100 In system in which the user defines the power up mode this shall be stated as either 13 Power up mode user defined or not applicable n a B mode IEC 1157 4 2 21 Acoustic initialization fraction If appropriate in systems in which the user defined the initialization mode this shall be 15 Initialization mode stated as either user defined or not B mode applicable n a IEC 1157 4 2 2n If the system has acoustic output freeze then Accoustic output this shall be stated as yes otherwise it shall l 6 yes freeze be stated as no IEC 1157 4 2 20 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 71 Output beam dimensions cm Appendix B Summary of the acoustic quantities S2 3 5MHz M Mode Test Mode M MODE Transducer Type S2 3 5MHz Transducer No AP0530546 Maximum temporal average power output Maximum powerimW TEC 1157 4 2 2a a es Peak negative acoustic pressure Output beam intensity 3 5MHz lob mW cm IEC 1157 42 2c Soatial peak temporal average derived intensity IEC 1157 4 2 2d 5 q T Ultrasound instrument console settings
56. lease shut down the device at once and contact for Shenzhen Well D Electronics Co Ltd or their authorized agent 5 If it is needed to connect the device with other company s electronic or mechanical devices please contact Shenzhen Well D Electronics Co Ltd before connection 6 Device operation storage and transportation environment Environmental requirements on normal operation a Environment temperature range 10 C 40 C b Relative humidity range 30 75 c Atmosphere pressure range 70KPa 106KPa Environment requirements on device storage and transportation a Environment temperature range 20 C 55 C b Relative humidity range 10 100 c Atmosphere pressure range SORPa 106KPa 7 Do not hit the fragile TFT LCD display If it cracks deal carefully with it in case the liquid crystal gets into eyes or mouths 8 Must not hit the inner rechargeable lithium battery nor throw it into fire in case it trigger an explosion Do not short circuit the battery output electrodes in case the battery be damaged and please use the original binding charger to charge the battery More over because used battery will cause environment pollution please handle the battery correctly for recovery processing 9 Must not disassemble the power supply adapter If failures happen it should be handled by the professional the charging output can only be used for charging the battery of the device any improper use on other b
57. m at checking their power supply circuits and peripheral circuits PAL video output waveform partial waveform WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 61 Chapter Seven Trouble Shooting 3 At any scanning mode there is no ultrasound image display on the screen gray scale bar character display is normal 1 Possible reasons a No return signal output in channel section b DSC section A D translation circuit failure c DSC section image processing circuit failure d Probe failure 2 Inspection methods a First check if there is return signal output in channel section If yes failure exists at DSC section If no failure exists at probe section and or channel section b If there is no return signal output in channel section problems mostly occur with probe and signal channels and the relevantt 5 V power supply Signal channels here refer to forestage amplifying circuit gain control circuit lofarithmic amplifier circuit and detecting circuit etc To identify the stage with problems check the waveform of the output pin of each transistor or integrated circuit And observe the output waveform to make decisions Normal output waveforms of each transistor or integrated circuit are given bellow with 3 5MHZ sector scan probe Final magnification circuit output Detecting circuit output U12 LM318 pin 6 waveform V16 V18 anode waveform 62 WED 2000V amp WED 2000AV Manual Technical Instru
58. me scanning state this key is used for image magnification There are 4 image magnifications Press the key continuously to enlarge the image at different rates The penetration depth is displayed at the bottom Display depth mm magnifications S2 3 5MHz mechanical sector probe S2 5 0MHz mechanical sector probe 92 160 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 29 Chapter Three WED 2000V Operation Depth 192mm x1 0 Depth 160mm x1 2 Depth 130mm x1 5 Depth 096mm x2 0 Figure 3 3 Four magnifications EN Numeric charactors and direction keys At freeze state press these keys to move the measuring mark up and down left and right At note state press this key to note patient ID age sex Measuring mark key At freeze state press this key to display mark and it can be moved with Direction keys or the mouse At note state press this key to note patient ID age and sex DIST Distance measuring mark positioning key When the measuring mark 1s moved to the expected position press this key to locate the cursor on to set the start point of a measuring Obstetrics table menu key At freeze state press this key to call out the obstetrics menu on the lower left of the screen figure 3 4 The current active obstetrics table is high lightened pressing repeatedly this key to select expected items 30 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E
59. n if probe wire is broken if probe has no driving power supply if probe motor is blocked or burnt if probe driving signal has open phase If there is no driving power supply check power supply circuit If probe motor is blocked or burnt replace probe motor or probe If there is open phase with probe driving signal check integrated circuit U16 ULN2003AN U18 74HC174 U19 74HC574 and power supply circuit of SCM U1 W78E58B and its peripheral circuit c Critical components need checking Probe driving integrated circuit U16 ULN2003AN driving power supply 66 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Appendix A Appendix A 1 WED 2000V device nameplate diagram POWER CONSUMPTION 25W SAFETY TYPE Class Il Type B MANUFACTURER SHENZHEN WELL D ELECTRONICS CO LTD ADD F12N F13 New Energy B D Nanyou Ave Nanshan District P R China 2 WED 2000V device main probe nameplate diagram ES 2 3 5MHz 3 WED 2000V device optional probe nameplate diagram E 2 5 0MHz 4 WED 2000V battery nameplate diagram Polymer Li ion Battery Pack Model HYLB 331A Description 11 1V 2200mAh Specify WED 2000V Max input Voltage 12 6V P N BT331A 2006 0340 Standard GB T18287 2000 Aj wDonotdispose ofin fire or put into water m Do not disassemble or short circuit da WDonotusein high temperature or near a heat source SHENZHEN WELL D ELECTRONICS CO LTD 5 WED 2000
60. nd manufacture s declaration electromagnetic immunity For EQUIPMENT and SYSTEMS that are not LIFE SUPPORTING Guidance and manufacture s declaration electromagnetic immunity The WED 2000V Ultrasonic Diagnostic Equipment is intended for use in the electromagnetic environment specified below The customer or the user of WED 2000V Ultrasonic Diagnostic Equipment should assure that it is used in such an environment Immunity IEC 60601 Compliance Electromagnetic environment guidance test test level level Portable and mobile RF communications equipment should be used no closer to any part of the WED 2000V Ultrasonic Diagnostic Equipment including cables than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter Recommended separation distance 3 5 d LV JP 3 5 3Vrms d LE VP 80 MHz to 800 MHz Conducted RF 150 kHz to 80 MHz 7 IEC 61000 4 6 _ 0 5V d Ei VP 800 MHz to 2 5GHz 3V m I Radiated RF Where P is the maximum output power rating of the 3V m IEC 61000 4 3 80 MHz to 2 5GHz transmitter in watts W according to the transmitter manufacturer and d is the recommended separation distance in metres m Field strengths from fixed RF transmitters as determined by an electromagnetic site survey should be less than the compliance level in each frequency range 2 Interference may occur in the vicinity of equipment marked with the
61. nd the WED 2000V Ultrasonic Diagnostic Equipment The WED 2000V Ultrasonic Diagnostic Equipment is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled The customer or the user of the WED 2000V Ultrasonic Diagnostic Equipment can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment transmitters and the WED 2000V Ultrasonic Diagnostic Equipment as recommended below according to the maximum output power of the communications equipment Rated maximum output Separation distance according to frequency of transmitter m power of transmitter W 150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2 5 GHz UE d un a VP For transmitters rated at a maximum output power not listed above the recommended separation distanced in metres m can be estimated using the equation applicable to the frequency of the transmitter where P is the maximum output power rating of the transmitter in watts W according to the transmitter manufacturer NOTE 1 At 80 MHz and 800 MHz the separation distance for the higher frequency range applies NOTE 2 These guidelines may not apply in all situations Electromagnetic propagation is affected by absorption and reflection from structures objects and people WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 11 Preface Guidance and manufacture s declaration
62. nformation Warning Stands for neglect of it will cause severe personal injury death or realized property loss Caution Stands for neglect of it will cause slight personal injury or property damage Note to remind user of installation operation or maintenance information These information is very significant but with no risk Any warning against dangers shall not be contained in NOTE Safety labels VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E J Preface Device labels explanation Switch on the main electrical supply Switch off the main electrical supply Signal output IPX7 Protected against the effects of immersion 4 Attention consult accompanying documents Class II device Packing and transportation labels explanation Handle with care Temperature limit Upwards Limited layers of stowage Protect against wetness Protect against heat System labels Refer to Appendix A for device labels 6 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Preface Device safety classification According to the degree of safety of application in the presence of a flammable anaesthetic mixture with air or with oxygen or nitrous oxide WED 2000V WED 2000AV can not be used in situation of mixture of inflammable anaesthesia gas and air or nitrous oxide e Classify as per work system WED 2000V WED 2000AV is continuous operation device Classify as per harmful liquid leakage T
63. power IkV dofferemtoal mode lt 5 UT 2 959 dip in UT for 0 5 cycle 40 UT 6096 dip in UT for 5 cycle Electromagnetic environment guidance Floors should be wood concrete or ceramic tile If floors are covered with synthetic material the relative humidity should be at least 3096 Mains power quality should be that of a typical commercial or hosital environment Mains power quality should be that of a typical commercial or hosital environment Mains power quality should be that of a typical commercial or hosital environment If the user of the WED 2000AV Ultrasonic Diagnostic Equipment requires continued operation during power mains interrutions it is recommended that the WED 2000AV Ultrasonic Diagnostic Equipment be powered from an uninterruptible power supply or a battery Power frequency magnetic fields should be at levels characteristic of a typical location in a typical commercial or hospital environment NOTE Ur is the a c mains voltage prior to application of the test level WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Contraindication It is suggested not to probe the part with wound or acute inflammation to avoid cross infection WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Preface 17 Chapter One Sunmary Chapter One Summary 1 1 Brief introduction The device adopts technologies such as microcomputer control and digital scanning
64. re a satisfying visual effect Figure 4 5 WED 2000AV Start interface There are four charging capacity indicators on panel of WED 2000AV During charging they are charging indicators and when they are all on it means the battery is full When the device works with battery operation the four indicators can reflect the battery state When four indicators are all on it means sufficient capacity And with the consumption of battery indicator number reduces and the four will flicker together with two beeps of buzzer to remind the user to charge the battery Caution The heat radiating holes can not be covered otherwise the device would be damaged due to over heat Tip 1 The display quality is related to viewing angle of the LCD operator should adjust it accordingly 2 At the sate of freeze or starting the system will automatically enter energy saving mode black screen mode without shut down if there is no action within 2 minutes 3 At energy saving mode press any key or move the mouse to return to normal working mode 4 4 Diagnosis Apply an amount of medical ultrasound couplant to the diagnostic part of patient body and then press the acoustical window of the probe on the part closely The cross section acoustic image of tissues will be displayed 44 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Four WED 2000AV Operation on the screen move the probe properly to locate the optimum position for the
65. refer to figure 2 5 24 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Two Installtion Battery release key Figure 2 5 WED 2000AV battery disassemble 2 4Power Supply The device provides two automatic switch over modes to supply power adapter and built in battery 2 4 1Power supply with adapter 1 Check the input power cord plug of the adapter to see if it matches the EPS outlet 2 Check the EPS to see if it is in the specified range and the power cord to see if it is connected well 3 Check the adaptor to see if it works well Plug the power cord into the AC input outlet switch on the power switch of the outlet if the DC output indicating light turns on green it works well 4 Shut the power switch of the outlet 5 Insert the DC output plug of the adapter into the DC14V outlet in the right side of the device switch on the outlet 6 Switch on the main unit the device is available now 2 4 2Battery Operation I Install the battery correctly into the main unit 2 Push down the main unit power switch to power on the main unit the power indicator will turn on 3 The device can start operation Note When the main unit under voltage indicator turn into red it means the battery is running up and needs charging 2 5Battery Charging There are 3 ways to charge the battery 2 5 1Charging through the main unit I Install the battery correctly into the main unit 2 Insert the plug of output DC14V 3
66. regnancy Measuring method of head diameter 1s given in the following figure VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 37 Chapter Three WED 2000V Operation Figure 3 17 Cat head diameter measurement sketch 8 CAT BD Calculate the gestation age according to cat BD After fetal head formed binary top diameter measurement becomes a routine in ultrasonic examination The measuring method 1s 1 Fetal head axial plane scanning look for BPD measuring standard plane from top to bottom 2 according to distance measurement method to measure distance of selected parameters the corresponding gestation age data will automatically show behind WEEK DAY 9 DOG GSD Calculate the gestation age according to dog gestation saccus diameter The method is the same as that of horse 0 DOG CRL Calculate the gestation age according to dog CRL The method is the same as that of cow D DOG HD Calculate the gestation age according to dog HD The method is the same as that of cat 2 DOG BD Calculate the gestation age according to BD The method is the same as that of cat 3 7 Notation 3 7 1 Note case history number ID At freeze state press NOTE key to display the cursor behind ID The default bit for case history number is 6 3 7 2 Note patient age AGE After input patient ID of 6 bits cursor moves behind AGE the default bit is 3 3 7 3 Note patient sex SEX After input the age of 3 bits cursor mo
67. rengths should be less than 0 5V m 14 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Preface Recommended separation distances between portable and mobile RF communications equipment and the EQUIPMENT or SYSTEM for EQUIPMENT or SYSTEM that are not LIFE SUPPORTING Recommended separation distances between portable and mobile RF communications equipment and the WED 2000AV Ultrasonic Diagnostic Equipment The WED 2000AV Ultrasonic Diagnostic Equipment is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled The customer or the user of the WED 2000AV Ultrasonic Diagnostic Equipment can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment transmitters and the WED 2000AV Ultrasonic Diagnostic Equipment as recommended below according to the maximum output power of the communications equipment Rated maximum output Separation distance according to frequency of transmitter power of transmitter W 150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2 5 GHz 3 5 VP d V For transmitters rated at a maximum output power not listed above the recommended separation distanced in metres m can be estimated using the equation applicable to the frequency of the transmitter where P is the maximum output power rating of the transmitter in watts W according to the transmitter manufacturer NOTE 1 A
68. s V27 V28 LM318 U16 resistor digital to analog conversion circuit R11 RI3 R17 R19 R23 R25 EP 1K10TC144 3 U6 or not If no aim at checking their power supply circuits and peripheral circuits Critical components need checking Luminance potentiometer and contrast potentiometer LCD and LCD drive circuit VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 65 Chapter Seven Trouble Shooting 8 There is dead band shadow or probe can not turn Dead band shadow DEP MITT Probe is blocked or motor stops driving 1 Possible reasons a Probe is damaged probe holder is in poor contact or oxidization probe wire is broken b Probe motor is blocked or burnt fixing screw in electrical motor tail bed become loose positioning rubber is worn c Air bubbles in probe oil layer or oil is weltering d Open phase of probe driving signal or no probe driving power supply 2 Failure isolation method a First check if probe is still rotating If yes check if fixing screw on probe motor tail bed becomes loose if positioning rubber is worn if there is air bubble in probe oil layer or oil is weltering If the fixing screw gets loose reset motor tail bed and fasten the screw Replace a new positioning rubber if it is worn out If there is air bubble in probe oil layer or oil is weltering inject oil and vent the gas b Ifno rotation or rotation is abnormal check probe if there is poor contact or oxidizatio
69. sital environment Mains power quality should be that of a typical commercial or hosital environment Mains power quality should be that of a typical commercial or hosital environment If the user of the WED 2000V Ultrasonic Diagnostic Equipment requires continued operation during power mains interrutions it is recommended that the WED 2000V Ultrasonic Diagnostic Equipment be powered from an uninterruptible power supply or a battery fields should be at levels characteristic of a Power frequency magnetic typical location in a typical commercial or hospital environment NOTE Ur is the a c mains voltage prior to application of the test level 12 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Guidance and manufacture s declaration electromagnetic emissions For all EQUIPMENT and SYSTEMS Preface Guidance and manufacture s declaration electromagnetic emission The WED 2000V Ultrasonic Diagnostic Equipment is intended for use in the electromagnetic environment specified below The customer of the user of the WED 2000V Ultrasonic Diagnostic Equipment should assure that it is used in such and environment Emission test Compliance Electromagnetic environment guidance The WED 2000V Ultrasonic Diagnostic Equipment uses RF energy only for its RF emissions Grup internal function Therefore its RF CLSPR 11 emissions are very low and are not likely to cause any interference in n
70. t 80 MHz and 800 MHz the separation distance for the higher frequency range applies NOTE 2 These guidelines may not apply in all situations Electromagnetic propagation is affected by absorption and reflection from structures objects and people WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 15 Preface Guidance and manufacture s declaration electromagnetic immunity for all EQUIPMENT and SYSTEMS Guidance and manufacture s declaration electromagnetic immunity The WED 2000AV Ultrasonic Diagnostic Equipment is intended for use in the electromagnetic environment specified below The customer or the user of WED 2000AV Ultrasonic Diagnostic Equipment should assure that it is used in such an environment Immunity test Electrostatic discharge ESD IEC61000 4 2 Electrical fast transient burst IEC 61000 4 4 Surge IEC 61000 4 5 Voltage dips short interruptions and voltage variations on power supply input lines IEC 61000 4 11 Power frequency 50Hz magnetic field IEC 61000 4 8 IEC 60601 test level 6kV contact 8 kV air 2kV for supply lines 1kV for input output lines power IkV dofferemtoal mode 2kV common mode lt 5 Ur gt 95 dip in Ur for 0 5 cycle 40 Ur 60 dip in Ur for 5 cycle 70 Ur 30 dip in Ur for 25 cycle lt 5 Ur gt 95 dip in Ur for 5 sec Compliance level 6kV contact 8 kV air 2kV for supply lines
71. t the battery to the electricity charger AC adapter longer than 10 hours otherwise the battery life may shorten The fully charged battery will discharge by itself if it is long time out of use Extreme environment temperature overcooling or overheating will influence battery charging effect Must not charge the battery near the ignition source or under extreme hot condition Do not use or store battery near source of heat such as fire or heater If find the battery is leaking or smelling move the battery away from the naked flame immediately Don t go on using non serviceable battery and electricity charger AC adapter Don t try demounting battery Don t short circuit the battery Do not throw the battery into the fire or heat it otherwise it would trigger an explosion Do not souse or wet the battery Do not incorrectly connect the positive and negative polarity Do not directly connect the battery to wall outlet or car lit socket Must not short circuit the positive and negative polarity of the battery with led or other metal objects Must not transport nor store the battery with necklace hair pin or other metal objects Must not pierce battery shell with nail or other sharp objects must not hammer nor step on the battery Must not hit cast the battery and avoid mechanical shock on it Must not bead the battery terminals Must not decompound the battery in any way Must not place the battery in microwave oven
72. ter the device into B mode the default mode at power on is B At note state press this key to note patient ID age sex BBA Double B display mode key At non note state press this key to enter double B mode And there will be two B mode images displayed on the screen One of them is a Frozen image and the other is a real time image Repress this key can make the two images switch between the states of Frozen or real time Press Freeze key to freeze these two images At note state press this key to note patient ID age sex BM 2 B mode and M mode display key At non note state press this key to enter B M mode Press this key can shift B mode and M mode images on the screen BM or B M for short On the B mode image there is a vertical bright line or a vertical line formed by equidistant dots which is named sampling line At note state press this key to note patient ID age sex 28 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Three WED 2000V Operation M 3 Single M display mode key At non note state press this key to enter M mode At note state press this key to note patient ID age sex Tip It is a must to enter B M mode first before entering M mode and the M mode mage is real time PEFP 160 BM mode Single M mode Figure 3 2 4 display modes MAGNIFY 4 Image magnification select key At note state press this key to note patient ID age sex At real ti
73. the end point of measurement single click on mouse left key to end this measurement meanwhile start the next measurement and the measured results will be displayed behind DIST on screen left 4 If need several measurements repeat step 2 3 32 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Three WED 2000V Operation Tip press mouse left key during measurement will shift the cursor between the start and end point Figure 3 6 Distance measurement 3 5 2 Circumference and area measurement Circumference and area measurement can only be done with mouse Mouse operating method 1 Single click on mouse left key to display cursor 2 Move the cursor to the start point of measurement with the mouse and single click on mouse middle key to confirm the start point 3 Move the mouse to call out another cursor and move this cursor to the end point of measurement along the edge of the measured area Refer to the following diagram single click on mouse middle key to end this measurement and the measured results will be displayed behind CIRC and AREA on screen left 4 If need another measurement repeat the above steps Figure 3 7 Circumference and area measurement Tips If single click on the mouse middle key when the measuring line does not close the start point and end point will connect directly at the shortest course and form a closed measuring line It is much
74. ther cursor and move this cursor to the end point of measurement single click on mouse left key to end this measurement meanwhile start the next measurement and the measured results will be displayed behind DIST on screen left 4 If need several measurements repeat step 2 3 Tip press mouse left key during measurement will shift the cursor between the start and end point Figure 4 6 WED 2000AV distance measurement 4 5 2 Circumference and area measurement Circumference and area measurement can only be done with mouse Mouse operating method I Single click on mouse left key to display cursor YH VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 45 Chapter Four WED 2000AV Operation 2 Move the cursor to the start point of measurement with the mouse and single click on mouse middle key to confirm the start point 3 Move the mouse to call out another cursor and move this cursor to the end point of measurement along the edge of the measured area refer to figure 4 7 single click on mouse middle key to end this measurement and the measured results will be displayed behind CIRC and AREA on screen left 4 If need another measurement repeat the above steps Figure 4 7 WED 2000AV circumference and area measurement Tips 1 If single click on the mouse middle key when the measuring line does not close the start point and end point will connect directly at the shortest co
75. this part clean with water first incase the abdomen pelvic structure could not be displayed accurately 3 Measure the hilum spine length 4 Measure selected parameter distance according to distance measurement method the corresponding gestation age data will automatically shows behind WEEK DAY 6 SWINE estimate gestation age according to pig heart length Check routine on pigs 1 Make the swine in a state of stand 2 Put the probe a little bit left or right of the centre on the ventral abdominal wall closely along the side of teats and skull to rear leg If the is mud on this part clean with water first incase the abdomen pelvic structure could not be displayed accurately T E dE EE Figure 3 15 Pig s gestation age measurement position sketch 3 To measure the heart macro axis screen should display the maximal longitudinal axis of heart With the growth of gestation age the fetal heart macro axis increase regularly Measuring method is given in the following figure peo Heart Figure 3 16 Swine heart macro axis measurement sketch 4 Measure selected parameter distance according to distance measurement method the corresponding gestation age data will automatically shows behind WEEK DAY 7 CAT HD Estimate gestation age according to cat head diameter To measure the head diameter is to measure the interior maximum diameter of skull between ventral and dorsal part which could be measured within 7 months p
76. ual Technical Instructions V1 0E Chapter Four WED 2000AV Operation DIST Distance measuring mark positioning key When the measuring mark is moved to the desired position press this key to locate the cursor on to set the start point of a measuring Obstetrics table menu key At freeze state press this key to call out the obstetrics menu on the lower left of the screen figure 4 4 The current active obstetrics table is high lightened pressing repeatedly this key to select desired items SWINE HL EQUINE GS BOVINE BL BOVINE SL BOVINE HL SHEEP USD CAT HD CAT BD DOG GSD DOG CRL DOG HD DOG BD WEEK DAY Figure 4 4 Obstetrics tables Among them 1 SWINE HL to calculate G A of swine In accordance with heart length EQUINE GS to calculate G A of equine in accordance with gestational sac diameter BOVINE BL to calculate G A of bovine in accordance with body length BOVINE SL to calculate G A of bovine in accordance with stomach length BOVINE HL to calculate G A of bovine in accordance with heart length SHEEP USD to calculate G A of sheep in accordance with umbilicus to spine distance CAT HD to calculate G A of cat in accordance with head diameter CAT BD to calculate G A of cat in accordance with body diameter DOG GSD to calculate G A of dog in accordance with gestational sac diameter 10 DOG CRL to calculate G A of dog in accordance with crown rump length
77. urse and form a closed measuring line 2 It is much easier to operate mouse to measure distance than to operate the keyboard 4 5 3 Heart rate measurement only under B M mode and M mode At M or B M mode acquire a satisfying heart beat waveform oscillogram first freeze the image and measure the distance between two adjacent wave peaks there will be 2 groups value acquired they are HR heart rate unit times min EF inclination unit mm s as shown in figure 4 8 single M mode B M mode Figure 4 8 WED 2000AV heart rate measurement 4 6 Obstetrics calculation Please refer to 3 6 on page 34 46 VVED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Four WED 2000AV Operation 4 7 Notation 4 7 1 Note patient ID ID At freeze state press NOTE key to display the cursor behind ID The default bit for case history number is 6 4 7 2 Note the patient age AGE After input patient ID of 6 bits cursor moves behind AGE the default bit is 3 4 7 3 Note the patient sex SEX I After input the age of 3 bits cursor moves behind SEX 2 Press M O key screen displays F behind SEX it means female 3 Press any key from ZOOM 1 to BM 9 screen displays M behind SEX it means male If press NOTE key this moment the cursor will return to the first character behind ID to restart notation 99 4 8 Image Print Connect the VIDEO IN port of the printer
78. ves behind SEX Press Bo key screen displays F behind SEX it means female Press any key from to Screen displays M behind SEX it means male If press key this moment the cursor will return to the first character behind ID to restart notation 99 3 8 Image Print Connect the VIDEO IN port of the printer with the VIDEO OUT port of the device and then operate as per the operation manual of the printer 3 9 Shut down the device Switch off the main unit first then the power supply outlet and unplug the adapter 38 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Three WED 2000V Operation The input plug of adapter works as a disjunction unit from the device to the power network Tips It is suggested to remove the AC supply plug of the adapter if the device is not in use for a long time Note It is strictly prohibited to plug or unplug the power cord of the adapter when the device is power on After switch off the device please wait for 2 3 minutes before restart lest it be damaged WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 39 Chapter Four WED 2000AV Operation Chapter Four WED 2000AV Operation 4 1 Keyboard functions WED 2000AV keyboard is given below Figure 4 1 Operating panel FREEZE Image hold Image hold or return to real time image RESET Reset the device When the device breaks down it does not work when you press any key du
79. with the VIDEO OUT port of the device and then operate as per the operation manual of the printer 4 9 Stop the device Switch off the main unit first then the power supply outlet and unplug the adapter The input plug of adapter works as a disjunction unit from the device to the power network Tips It is suggested to remove the AC supply plug of the adapter if the device is not in use for a long time Note It is strictly prohibited to plug or unplug the power cord of the adapter when the device is power on After switch off the device please wait for 2 3 minutes before restart lest it be damaged WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 47 Chapter Five Transportation and Storage Chapter Five Transportation and Storage 5 1 Environment requirements on transportation and storage Environment temperature range 20C 455 C Relative humidity range 1026 100 Atmosphere pressure range SOKPa 106KPa 5 2 Transportation Signs on the packing box conform to Iconograph and sign of packing storage and transportation GB191 2000V Simple shockproof establishment is fitted within the box which apply to aviation railway highway or steamship transportation Keep dry avoid inversion and collision 5 3 Storage Equipment should be taken out from the packing when storage time exceeds six months power on it for four hours and then pack it correctly and keep it in a warehouse The device must not be p
80. y picture WED 2000AV battery picture 7 2 Installation and disassembly of WED 2000V WED 2000AV 7 2 1 Disassembly of WED 2000V 1 Remove the front cover WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E o Chapter Seven Trouble Shooting Screw off these 4 screws with Phillips screwdriver Remove the button board connector and the front cover Finish disassembling Screw off these 5 screws with Phillips screw driver Take off the mother board and LCD our pxeoq Uopnqdg Step I Screw off these 3 screws with Phillips screw driver Remove the LCD back light PS cord signal line and take off the LCD Step 2 I Finish removing mother board 56 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E Chapter Seven Trouble Shooting 3 Remove pow er supply board Screw off these 2 screws with Phillips screw driver Take off power supply board Finish removing power supply board Power board and motherboard are connected with coaxial connector 7 2 2 Disassemble of WED 2000AV 1 Remove the mother board Screw off these 4 screws with Phillips screw driver Remove the signal connecting line Step 2 WED 2000V amp WED 2000AV Manual Technical Instructions V1 0E 27 Chapter Seven Trouble Shooting Screw off these 5 screws with Phillips screw driver o Tr ELLER RR Wt Um EE v FR PF E oes Remove mother board eo FR n ks m

WED-2000V, WED

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