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- Frank`s Hospital Workshop

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10. 51 Phyaction Guidance E C service manual version 0 5 Page 3 J NO e ROBES ok m a it a a ka bef e S NE Do te SO kaba ap kitte 51 13 2 Check up if vacuum is insufficient E 51 ZK ro ditti eesnissaniesia n S a ENE 52 14 REPLACEMENT PROCEDURES coup tes 53 E A oirlo 53 a A en ote Sa 54 A Pim E 54 RE d d 55 A SA 55 A 2 0 oi sion kara ii Ben en pa a kr a e kt ek ank a kk HR 56 J MA o EE 56 TES KODE AN ave pirat sere ee 57 SE 1 0650 3 KEEN 58 16 SOHEMATI A 61 Phyaction Guidance E C service manual version 0 5 Page 4 2 GENERAL INFORMATION 2 1 Introduction The Phyaction Guidance E C is an advanced 2 channel appliance for electrotherapy offering a wide range of current types which can be applied by means of normal electrodes or via the integrated vacuum unit Compared with the Guidance E the Guidance C has an additional integrated ultrasound module As a member if the I M S group it is built according to the newest requirements concerning the Medical Device Directive This manual is written for service engineers who are authorized by GymnaUniphy nv It gives a complete and accurate picture of the Guidance E C In doing so it will hopefully help you to reach your goal to form a correct diagnosis and to solve the client s problem as thoroughly as possible 2 2 Information If you require additional informa
11. Z y note iom EE s 2 eB JAYS 15Y1 RETE Dur LOUP E EET ee X TU ua A a NOR Lib yes LUEGO X Wie eSI MORES NIMAVdISNVA J N91S530 Dt ACTE IDE aS VO 8 s eret O e v E E H H38NWRHN N3WNIDA ra INIYIJ INTIUNSYIN NINO 3 m AG a E G 3 AN e e IU AN DWEL Je fi do vVITZIAY NOT E Li TE o lt H m GO alan ST g ET g7U4NI JAYE 001 i OE VOTH GSUdA EO28 TedW a JJA EX EPA 33A ALF m SE x gzan Ge 1 T Php zn 2028 le GE a JUAT m Eu n LL y TEE ALE PE OOFEIN VOOVEOAON y LIZI ZZN YI Z2 ENE BEJ aso V Jr on yon POOPEJN P VOOPEIQW TE e Gade o OEE y T JT 7 8 pP ET e e P e L JOZI JVS R lO m n e vs e E a EBH aa Z o m dyna ZLU ou Zu prz T g II R EZH eG 1 TRES RG K NZ E he m Avis PED JOT JZESY e e b gozu TIZESYE 95 a E 1002 e e e e fen Fe r 230 288 LO OU Ldt A E L 1002 YOZI e e 0 LB BB 06 41 ESCHER IIINA m KEEN NOT Z k ET SH e VEI SS T v 010H aki E ET v una oogvm ont EOTU BE W SSEN Weu Kon EE g vuno JIA VIA OZH m ar door 2400 uA s TER set db PET ep Gees Fee n En OOVEDN 12ESVE uz BOT gue 2n 8 4 EXE pao y or T POOR JH 00FEJM t JEAN E e d gt 1001 LI un MI JT x e EE YOZI JV5 V and BEBE a E oeo iT r Eu Tag we e g vuo acy OTeu 502u DB i 12EGYA TBE ral A5 EE NZ cee lt as PILIJ
12. 1 3 4 4 Symbols on the back pi the Guidance E C 11 3 4 5 E o MM 11 3 4 6 Si eo de da on eben 11 3 4 7 A U nannan poo se ia soon dann 12 3 4 8 ee ee et 12 RA E EO E E 13 CIRCUIT DESCRIPTION 14 31 Mun POP LUS D UL nin y an asi tn bi ta a n kaj dE 14 5 1 1 leuc e o A 14 A A Miero controller simi os gis ea at at a a a a ta ak aa kan la ala n en ls a ao ma anka kal ai 15 5 12 VERTES PR Ol r uuu uuu in ETE 16 5 1 4 igual process na COCA ee 17 Ii A 17 5 1 6 irn s Burm 19 ae 4 00 207007 7 bal 19 E EA GS A LEE 20 5 4 Ultrasound circuits only for Guidance C 21 5 4 1 SS 21 5 4 2 ri EE 2 5 4 3 AE AAA PP T EE E 21 5 4 4 aa A 22 a BM OMIC O u uuu uuu uuu uuu uu ee 22 Page 2 A AA 22 5 6 1 General informatio reese ia kl ar uu cdo 22 5 6 2 W CSG uuu O 23 n Ultrasound beads only Guidance O eege 24 ge dee eg NE USB DUE u u u uuu sau a er ne 25 E AE O tb 25 Le IO d 25 2o oo 5 AE AN Lu u ua asas kak e a a l a k ia eee na en at er tata da 25 LS Ditioren curent vave E 25 7 4 2 General F 0nctonal ONE GAN Tm 2 1 4 3 Functional Inspection Electrotherapy
13. 21 7 4 4 Electrical Safety Test According to VDE 0751 28 7 4 5 d SE CSS NES IN m 28 8 DL LEN SETTINGS MENU een tunes a au na tope enn tbv eie 29 a INIM M 29 CANT ooo HS 29 ORAN A 29 f A SA 30 A e Cu In A 30 m Tas 30 Ape 2 L u us oun 32 8 7 1 A bh L TCR 32 HN espe deuil T m 33 4 0050 34 Co AS 35 A A b l A PR Ue OI 35 9 HE E IA ee 36 9 1 Counter csi AA PPP 36 5 Jipri DP NEUE 37 Ja Tesi u uu TT 37 d4 ERT 38 lt a Tol 6 o LE li u aba kai ai dite 38 55 GE ENEE eege 38 10 UPGRADING SYSTEM SOFTWARE 40 ER E Roc GRR Qh gic bn PA 40 102 WON TON ane ta 40 105 Downloading Ih SOU W A L aaa 40 A e EEN EERENS 41 ll HAXKIPVARE LABELS RE TENE EE RA EEEE 42 ILI LAOS DE AN AE O ee 42 12 TROUBLE Aa 43 ae on a E e bi op ii ao Ne 43 Se A aa 44 DE HE 00 O l 5 uu uu anu ao acts cases eo pa ecu e to di ad od le ase dilo fete ae 45 CAR SS ae 45 a a jak a pa taken 46 ia AA nen 46 12 3 4 Ultrasound task 3xx NOT FOR GUIDANCE E 47 12 3 5 Laser task 4xx NOT FOR GUIDANCEEAC 47 XT EE SI din aos A 47 a n e ee re e mo 48 J ba a AAA 49 13 Trouble shooting vacuum cltrcut1ts
14. Name Name Date Sign Sign Phyaction Guidance E C service manual version 0 5 Page 28 amp SYSTEM SETTINGS MENU The system settings menu allows the user to personalize a number of parameters and to perform a cable and electrode test It is also the menu between the main menu and the service menu In order to select the system settings menu press the key The following screen appears SYSTEM SETTINGS __ 1 Contrast 1n z Language Enal A Sound settings 4 Change pre zettinaz 3 Stand by time 14 68 6 Plate electrode test r Cable test a System information 9 Text for start up screen 16 First screen GUI CANCE 11 Copy channel parameters OFF 8 1 Contrast settings It is possible to set the contrast between 1 10 Factory setting 10 8 2 Language There are four different languages available in the West European version English Nederlands Francais Deutch There are also four different languages available in the South European version English Italian Spanish Portuguese 8 3 Sound settings Pressing key 3 enters the sound settings menu were different sound settings can be done Phyaction Guidance E C service manual version 0 5 Page 29 Sound zettinaz 1 Beep at end of treatment z Beep at pressing of a key A ET stimulation beep 4 Beep volume ET contact beep 8 4 Change pre settings Pressing key 4 in the system settings menu en
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16. ERR DAC12 10 12 bits DAC control amplitude surge amp vector ERR DRW135 LCD controller 1353 support 3 x t4 jNoeotued 1 O Direct control for the chopper FET s ERR I2C 23 Bit level serial I2C support IZC connection to E2PROM down during self test 25 j Netued Phyaction Guidance E C service manual version 0 5 Page 45 Error name Nr Description ERR SC 35 Safety controller interfacing 4 2 Safety controller defective or not inserted during self test 2 1 Safety controller defective or not inserted during self test Fd Safety circuit activated during normal use J40 jJNotused ERR USD Ultrasound dutycycle generation 12 3 2 Operating system 1xx The operating system is responsible for task switching and for communication between the tasks Error name Nr Description ERR Q Task communication queue is full 12 3 3 Electrotherapy task 2xx The electrotherapy tasks respond to commands from the user interface uses the drivers to Start and stop waveform generation and reports the status of the electrotherapy back to the user interface Electrotherapy task A may be used to control electrotherapy output A or A B for 2 channel waveforms task B is only used to control the output B Error name Description ERR E CTRL Electrotherapy task A state control scu ENSE Electrotherapy task B state co
17. EE JJA JJA END S L d2 830V3H a E AN JW EE dur ura zt e JJA DES m E PA M m Ese SW E d ESE TW HOT pit E es EE SE 2 e LI lap ET SEET EC ze m T L ZE LT aN BATIR 94 ZSS ATE A JJA SS z 938 LESS NASL Fl g ru NOT Z2013HF aT qe TWE vV 0S 221 2Nmm e ses ez PI up sen kon T228 NDS 221 JNE e SE qui ET guud Parrots ER a Fa LA Ae e rene lt n c 02 Z 380r age SEET LES VENE a 06828 2228 ES di x ii BEISSE al YOT EZU PONYISTAFJNM NEEN out Bie MOT YOT E NVJS A32BgB0 988 J2ESYyE P Tru Out 9228 Es Z NVISTAJNM ogy Eg i3 d LT NVOS AS Lau A Rae iam lt 287 IN IM E g E 3 gel EAH 9g q d ez JYIVO 5 TZES a an JOA Bog EI Zt e Sd8msz Cyl VO I JOU Cl ke any IS JJA ev s T vr dzz VIVO 3 v V JNA i 084 EOBURZTEYIVO AN 2 1 HOHHZ3 13N e J40 AHS T ASVE RUES pe WT TI ie ea ER OTAN Eeo g V V H OU HET pg wg 2 YOT g d ES ONES yov AV d v GH H iH 30 ME TL yu pq Op E H d d END V Ju JOU JU Es 5 V AE sen JIJA 1H T 200 TODA ZE ET NE NUR AS ss SOIN UE ST gen 11V4340 JIIAYIS D Ee iri g 1 EGH Teuotiadoa e X uU 3 TM pe jeu Sivavodwoo Z V Bb Bal Sie Bleak L s JAYS Lu pe LOU Oye ESO Ree age an RI cc mn aaus CN Disce ee E e oO psg v O0 Sh sk qoe d BEN N34n20d LI OHIO S
18. service manual version 0 5 Page 55 Caution Installation The installation is in reverse order of the removal procedure Make sure the front LED s fit exactly into the led holes Do not over tighten the screws and the nuts 14 6 Keyboard PCB Removal Caution Installation First complete 12 1 Disconnect the rotary s of channel A and channel B Disconnect the display flatwire Disconnect the backlight connector Remove the 8 screws that fix the keyboard PCB to the front chassis Open the display connector with a small screwdriver before removing the flatwire The installation is in reverse order of the removal procedure Do not over tighten the screws 14 7 Metal shield Removal Caution Installation First complete 12 1 and 12 6 Remove the 11 short screws plus 4 long screws of the display hinges Lift out the metal shield Do not damage the cables of the rotary s If necessary cut off a little bit of the glue before removing the metal plate The installation is in reverse order of the removal procedure Do not over tighten the screws Phyaction Guidance E C service manual version 0 5 Page 56 14 8 Display Removal First complete 12 1 12 6 and 12 7 Remove the 4 black screws on the rear side of the display cover Gently slide out the display Remove the four screws of the display Caution Put a soft tissue under the display assembly in order to avoid scratches Installati
19. service manual version 0 5 Page 48 Error name ERR_SELT Nr Description 82 ET comparator of channel A did not make safety relay trip Channel A safety relay or test relay contacts don t close Channel B safety relay or test relay contacts don t close Channel A safety relay contacts don t open Channel B safety relay contacts don t open Channel A test relay contacts don t open energise relay activated or stuck and patient hooked up AC DC relay stuck to AC RON O1 Channel B test relay contacts don t open energise relay activated or stuck and patient hooked up AC DC relay stuck to AC Electrotherapy comparator error Lower bound of channel A comparator too low trips at 5 mApc Lower bound of channel A comparator too high trips not at 22 mApc Lower bound of channel B comparator too low trips at 5 mApc Lower bound of channel B comparator too high trips not at 22 mApc REF DAC A outside 1 4 1 6 V range REF DAC A higher than 0 1 V DAC A outside 0 9 1 1 V range DAC A higher than 0 1 V REF DAC B outside 1 4 1 6 V range REF DAC B higher than 0 1 V DAC B outside 0 9 1 1 V range DAC B voltage higher than 0 1 V Channel A 2 kHz test current outside the 10 18 mApx range Channel A doesn t operate in the CC mode Channel A doesn t operate in the CV mode Channel B 2 kHz test current outside the 10 18 mApx range Channel B doesn
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21. t operate in the CC mode Channel B doesn t operate in the CV mode Channel A AC DC relay stuck to DC Channel B AC DC relay stuck to DC ERR_SLAS Laser therapy self test LA NIN INI NIN I Ny Bp TL P T T T TT N OR NO N Od O01 A JGWH IN O O 12 3 8 Processor test 1000 Error name Nr Description ERR_CPU TO Phyaction Guidance E C service manual version 0 5 Page 49 Error report form Guidance E C Dealer information Name dealer Telephone number Fax number Contact person Unit ID Serial number Software version Software version MC Hardware version main PCB Error history Error during selftest YES NO Error intermittent YES NO Give an overview of the 5 last error codes Error Error code Value 1 Value 2 Value 3 number Power supplies Measuring point result Measuring point result TP1 18V TP72 15V TP11 15V TP3 18V TP2 12V LI T3G2V 0 0 0 TGS TPSIQSVE Error description and comments Phyaction Guidance E C service manual version 0 5 Page 50 13 Trouble shooting vacuum circuits 13 1 General information The vacuum circuit has the following components Vacuum pump Water drain tank Channel A valve Channel B valve Rhythm valve Vacuum PCB with vacuum sensor The vacuum intensity level is limited in the following way In continuous mode max 320 mbar 10 on maximum level
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23. 1 led met borst 0 31256 Rear cover LCD module 800 0 31257 Knob intensity encoder 0 31556 Cableassembly backlight 800 0 31557 Cableassembly watertank 800 0 31558 Cableassembly valves 800 0 31560 Cableassembly RS232 800 0 31563 Cableassembly main lO PCB 800 0 32479 EMC profile self adhesive 0 32483 Friction hinge LCD assembly 0 33909 Mains tranformer ringcore 500 800 0 34213 LED 3mm yellow 0 34214 LED 3mm green 0 35402 Vacuum pressure sensor Motorola MPX2050DP 0 38103 Pump 800 serie 0 38104 Fan 12V incl connector 0 38105 Valve 0 65mm complete 0 Phyaction Guidance E C service manual version 0 5 Page 58 38404 LCD assembly CCT blue 800 39609 Rubber foot complete 0 Phyaction Guidance E C service manual version 0 5 Page 59 15 2 US head 4 cm Phyaction Guidance C Unit type US HEAD 1 amp 3 MHz 4 cm PHYACTION Guidance C 892 Reference number 116216 Version 10 Ordering number Description Scode 114833 Repair tool for UNIPHY US heads S 130020 Quartz calibrated 4cm for C500 Guid C S 131566 Cableassembly US head C500 Guid C S 139602 Yellow protection cover for US head S 15 3 US head 1 cm Phyaction Guidance C Unit type US HEAD 1 amp 3 MHz 1 cm PHYACTION Guidance C 891 Reference number 116217 Version 10 Ordering number 114833 Repair tool for UNIPHY US heads 130019 Quartz calibrated 1cm for C500 Guid C 131566 Cableassembly US head C500 Guid C 139602 Yellow protection cover for US head
24. 2 4 1 Incoming inspection Check that the equipment has not been damaged during transportation and that the accessories are intact and complete In the event of damage and or defect you should inform your supplier 2 4 2 Mains voltage Your appliance can be run off the mains at a nominal voltage of 110 115 127 220 230 or 240 Volt AC 50 60 Hz On the bottom of the appliance you will find the mains voltage selector to set the correct mains voltage Check if the voltage 1s selected correctly setting of a lower value than the value which should be used in your region can lead to irreversible damage of the equipment You can use a coin to turn the switch 2 4 3 Functional test During production the equipment 1s tested for electrical safety Whenever the equipment 1s switched on the processor performs an extensive test to ensure that the equipment 1s operating correctly In addition you must check whether the display and the indicator lamps are operating correctly If this 1s not the case then you must not use the equipment and you must contact your supplier If you can t read or if it is difficult to read the display then press the system adjustment button 12 and select option contrast Use the black A button to darken the text or the black W button if you want to make the text lighter 2 4 4 Selecting the operating language You have the possibility to change the operating language by depressing system adjust button 12 and selecti
25. NASINN XNISLV3H 0200 LIN E k Laus HIMOA JILI DL MOb NOOT ZATA gt z diun CET TATA gt MI A T Hex EE y z TC e e e A 134 NOO HALLS r s ue T AC BNO tdl IE RE Erat HS Ep e NICO Al E AOb L pee ZLTE a x jv nu SE I ie rss SH eer l Mi INS E Lin A 2 ALR e on IAE J2 dIl Ev Se Z u VETT CERE Lie 0878 DE STN LI 095 VSL ZO voco m e NES HERD e 3323 y A y fr A S I 0G AOG NT AGZ NOOOL ASZ NMOOUOT a ON AGz N000T ASZ NOOQOT OOTUSOE NO ZE NORE IA We JOA IAZ 9 AAA ETI LeJJ ADEJABEO vzd W W Re 9 s zu gt LYEN v ES Feb d T SE T m Nou 22 lt e 260 C ba Lert e IE si EB SE ETI EC ZEY IZNP L NOOT I SE OU A tsa e e SE GE GE A LEO OT NEA ZAN 909r e e o AGZ NOOQOT AGSZ NOOQOT JEU d ADCGC NT e e e e aay JA UND ASTZanzbpi MOUTAS yg e a D r EWIJ T BUS OS GEH e gri ONS YE SHAS Ad l E e e au A TAT e L e AMSA N IAG e e e e VA A A U ki s s bi ra ba ETE KES TES g1 CTBLN Eg ot PES PEERS ABT TS IWS Hl ld STN l YI 27 Ged A AN EE AA 7 s a Dorn ee 200617184 v2 Hno2 SATT E BOTY OTT 520 AOS ADG NT A V NOOT l dM E o Egi 2007 118d T iE 523 za DER EOF AVE EEC Z2ZIESAZE A r AGL UH e 9 0 LAN e SEBZNI A22 _ c EE 060 HA gt 8I ABI m e AA e e 27 28 923 AgI bau i T DA ene NOOT AS2 D
26. Safety inspection To prevent your Guidance from having hidden defects acquired during its lifecycle it is strongly recommended to have the device checked regularly for its proper functioning by qualified personnel In some countries this is mandatory or your insurer may be requiring it A record of these inspections should be filed so the measurements can be compared with earlier values to alert for a possible potentially dangerous tendency To this purpose you can e g make copies of these pages 4 This document is also available in the Guidance E C guideline 7 2 Inspection interval The design of the device is based on a yearly inspection If the legislation of your country or your insurer call for a shorter period you should adhere to the latter 7 3 Inspection results The inspection is passed when all items as presented on the standard document on the next page are passed In the unlikely event the device fails the deviation should be fixed before recommisioning it Repairs are only to be made by technicians authorised by GymnaUniphy nv Contact your supplier on this matter 7 4 Different current wave forms for checkup The following figures are the references for the different current wave forms as explained in the checkup document Tek Run p Average a Tek Run ou Average eL E EET qe Phyaction Guidance E C service manual version 0 5 Page 25 Tek Sisi rose 21 Acqs T Phyaction Guidance E C ser
27. a Orm E SVT AGL e MO DE DIN TEN a BAN 28d A tae UD ET L Listy id V ED LAY men P ETE E ES AF2 A 1N Jesse gt st J TM FIATH v aga Ev vu NE Ag dl aab ej EU RAM E EN OBE Ep 3 Rp AGSGE NOOQOOT ES SE Tm dee Seb DUE NOOL Iu DGGA LOQA TE 9 ILIJ NES N39 S V AGT TEGH s G 1 ei e e ag A TAN OAMABI HEU GLB8ZMWI1 951 SV AGL m gt e q on ung amr LZE yH ozq Balad
28. encoders intensity knob are measured by the PIC and compared by the Siemens microcontroller Phyaction Guidance E C service manual version 0 5 Page 16 In case of a difference the safety relay Is switched of and an error 1s generated The safety controller also reads and processes the values of the keyboard 5 1 4 Signal processing circuits b The signal processing and stimulation circuits are identical for channel A and channel B Only the circuits for channel A are explained The signal processing circuits are built around U11 CH A This IC 1s a programmable sinusoidal generator producing a sinusoidal signal of a determined frequency The form of the amplitude is determined by DAC U24 and U14 Depending on the type of current the therapist has chosen the multiplexing IC U34 CHA will select the right input and connect it to the amplifier circuits Pow A XO sinusoidal signal sometimes modulated in amplitude depending on current waveform X1 fixed voltage X2 DAC_A amplitude modulated signal for diadynamic currents without sinusoidal component X3 inverted signal of X0 5 1 5 Stimulation circuits After the amplitude and or the waveform of the signal are generated the stimulation circuit amplifies it turns it into a CC or CV signal and if necessary changes the polarity and or rectifies the signal Basically there are four possible hardware configurations and the amplifier circuit can be redrawn according
29. following message appears HEX programming done Now switch off the unit wait a few seconds and restart the unit The unit will now indicate the new software version in the startup screen When the device 1s passing the selftest with success the device can be used normally 10 4 Troubleshooting If the PC cannot connect to the unit check whether the interface cable is properly connected and check whether the right COM port has been choosen Try the other batch file Flash bat or Flash2 bat to see if this solves the problem In case of any error most of the time this will be error 601 switch off the Guidance and repeat the download procedure Phyaction Guidance E C service manual version 0 5 Page 41 Il HARDWARE LABELS Each PCB has a label with the hardware code GymnaUniphy nv puts the label on the PCB during production The main PCB consists of an eeprom in which the actual hardware code of the used PCB is saved The hardware code consists of 4 characters and is composed as follows from left to right ee From to 9 Increase in case of a Hardware is not compatible principle technology change anymore All previous changes made in hardware shall be inherited in the new layout The last 3 alphanumerical numbers will begin with A A AtoZ Increase in case of a Components are not anymore principle technology change compatible with the previous layout All previous changes made in hardware shall
30. that operate independently of the microprocessor When the safety system detects a fault during electrotherapy the delivery of current is interrupted within a few milliseconds and it is impossible to perform treatment using the equipment The safety of the patient is therefore guaranteed Whenever the equipment is switched on using the main switch the microprocessor checks the entire safety system for correct operation 2 3 4 Use of the appliance The equipment and accessories should only be used by authorised personnel and in accordance with all instructions included in these operating instructions The Phyaction Guidance is only to be used for electrotherapy 2 3 5 Product documentation We strongly recommend reading the Guidance Guideline carefully in order to understand and solve questions of the end user 2 3 6 Radio interference suppression and electromagnetic compatibility This equipment meets the guidelines for ISM equipment relating to electromagnetic compatibility and is radio interference suppressed according to VDE 0871 B Also see paragraph 1 2 3 Operational safety concerning the use of the equipment in the vicinity of short wave and microwave equipment 2 3 7 Medical device directive MDD This device complies with the essential requirements of the Medical Device Directive of the European Committee 93 42 CEE as most recently changed Phyaction Guidance E C service manual version 0 5 Page 6 2 4 Installation
31. 1 wa OC AN LoL ONS as mv rinduno RAE y ALY S oo gdn V FT mv DO TNdYNI e VE ct Tee i 3 o AG E A3JA I de mCAZ 338 L SA OD gH 17vom d zs go 2v 338 z ZI ET LEN A ER SSA aNIV GNI ced TAK m JV LE E ae a se X98 OULJHTLZ v M dm Es D AUR Nog 53345 99 ty N TIET 036 57 k g2 L t rer Wee ee reap TIVTO 8 S i E Xo 2 24 3002 5 9 BE lt TN eu s 2 S mv HOLY Z X lt EVTd NOZFV LET dn oocr Z a Sunnie LT E TX z xp LEN span ITT TI 14 v d su Z2ZG07VLIHV Z 224 a 3012 S T EI C 189 OLY bed mo 100512 EZ LITE NOOT T mi JIA d00L T BOT ere EN y 001 Z8 ee e H ke v7 avd e TET a Edh HNOT a NOOL SR E EDS a PA SCH SES JIA JJA SEQ E a LE YI VVvdlm e e L YOOT r e PET I rou NOOT mn in ASG 100 Eg Teuotiadoa 3 JE X uU 3 TM pe jeu Sivavodwoo Z y EN ba S JAYS 1SYO te ee IU AG 0 Z EE NE EA Er xX TWWSt A Pi ar LLZ f TEFFO X Leer ES LG e N O MI MOO DIN V A d UNO TSg S3 UD UE AM e DE Ep Wan E E ne 80t3 v005MT13 dJENNMN NINWNNMJOO HJ JUYd NIIS 3 NAD ldnWv q I AN DUWUAB g Ag puoyouseyu Aydiun
32. ACEMENT PROCEDURES When handling static sensitive devices such as PC boards of the Guidance E C the following precautions should be observed Persons should be earthed by means of a wrist strap Ground all electrical equipment work bench soldering iron The following PCB s are installed in the Guidance E Main PCB ET output filter PCB Vacuum PCB Keyboard PCB Display PCB 14 1 Cover Removal Switch off the unit and remove the mains cable from the mains entrance Close the display and install the unit on the side panel Remove 6 screws at both sides of the cover Caution Disconnect the flatwire between the cover and the main PCB Installation The installation is in reverse order of the removal procedure Phyaction Guidance E C service manual version 0 5 Page 53 14 2 Main PCB Removal First complete 12 1 Disconnect the transformer TRAFO RS232 connector ET channel A connector ET channel B connector Vacuum PCB connector and the FAN connector Remove the 6 screws that fix the PCB to the chassis Pull the PCB a little bit forwards and take out the PCB Caution To remove the vacuum PCB flatwire put a smell screwdriver under the flatwire and pull the complete cable at once out of the connector Installation The installation is in reverse order of the removal procedure Cut the vacuum flatwire in several parts in order to put it back or replace the flatwire b Cut the paper in a
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35. In pulsed mode max 480 mbar 10 on maximum level 13 2 Check up if vacuum is insufficient The vacuum levels are NOT adjustable If a vacuum pressure measurement is not within the limits we recommend checking the following items Water outlet check whether the water outlet tube on the rear side of the unit is connected Pump Open the pump 4 screws on top of the pump and clean the membranes with normal water Filter Replace the air filter Tubes check whether the tubes are well connected and clean replace if necessary Water reservoir when the water outlet of the water tank is clogged we recommend to replace the water reservoir If one or more vacuum cups do not remain properly attached to the patient check if the valves or the output connectors are clogged If the output connectors are dirty we strongly recommend to replace the four connectors at the same time 4 In order to avoid problems with the vacuum circuit advise the end user to follow the instructions below Clean the patient s skin before applying the vacuum cups Clean the sponges after every treatment Use demineralised water water without lime Disconnect the vacuum tubes once a week b The water tank of the Guidance E C is smaller than the water tank of the Phyaction 787 Phyaction Guidance E C service manual version 0 5 Page 51 13 3 Tube connection diagram Phyaction Guidance E C service manual version 0 5 Page 52 14 REPL
36. M IZESNVE jele NOT core coal TZESYE 1 gt os A x i p s 213 1002 mM BEREND 5L L 084 VEO 002 YOZI dOOL e e e e 984 Gg Erd ha Zy A 8 l eB Bb L deeb JAYS SV au ei Eau UG PpD8sIUNOUW aue xx UITM pa jeu sivasvodwoo azoo Diet E 31VvQ RUE xTWWAaTA Po 3NINVHG SE oe E t n reuortrido ase s UTTM pe jeu Sivavuodwoo resus NUS A Ge 7G DATE s E ABY L J POOSMTI uaaWnN ININNDOQ HUDUd NUHd33 2EZ2SH E A N DPUWWAL gt pusejuj AY diun 0 e Nue l SC MOT e e DER e um uo TUER H3 na
37. Phyaction Guidance E C service manual version 0 5 NN NN i Page 60 16 SCHEMATICS Photo main PCB divided in groups Power supply schematics Microcontroller circuits Safety control circuits Relais circuits Amplitude generation circuits CH A Amplitude generation circuits CH B 9 Output circuits CHA 10 Output circuits CHB 11 Current measuring circuits 12 RS232 and EEPROM circuits 13 Vacuum control circuits 14 Ultrasound circuits AN gs a Phyaction Guidance E C service manual version 0 5 Layout main PCB with indication of important points Page 61 Phyaction Guidance E C service manual version 0 5 Page 62 Main PCB wv i ES AAA LLL LAS 0 l ssssssgessss n Wa m d sina ge i A I 1 E X a lt n KA W swak 7 zz 1 Power supply and amplifier transistors 2 Output transformers 3 Current measuring circuits 4 Laser circuit not in use for Guidance E C 5 Microcontroller circuits Phyaction Guidance E C service manual version 0 5 Page 63
38. R e A es ortis M mea Sd NUS AQT NOOOT JOET 0301 pout v u P 0 N V a 4274 JOVIL ETH 228 26H 6 8 H E T m UN 3 a oO ELOVESHYEN tac Lie INIAN o aging i WIS oA LJ kou w katel dW020N9 E 313538 S 3 uk A Liers TE VW 8e 4 U d He e a dum NE Z S we PA Lg d d TENTAR HAT JIJA H aid LND LT LI Gd B ER JIAM e e uw AL p MO A N LA pO OO DEE 11 y y y OUAN at ing 130 A4 707 SE a grn TOTH VZ HNOZI SSEVEJN yg TEH OBH OOTH ale GET 300n7 9 i AG 6 s 2234 zd Alen js E g JDA d D me ud Nee TY 02T Gyn e EA BEY LO wor aed LZU
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40. SERVICE INFORMATION PHYACTION GUIDANCE E GUIDANCE C Version 0 5 May 2002 Phyaction Guidance E C service manual version 0 5 Page 1 1 ai a pe ph Phyaction Guidance E C service manual version 0 5 TABLE OF CONTENTS EE TY e 2 NERAL INR RS 8 uuu cious uuu iio 5 CUNEO S Kl vE 5 A 5 A pa ban at ip n e en nee ee 5 2 3 1 DIS CIE 5 NN liebe RACE 6 235 A kia 6 2 3 4 Ueol me phi it uu 70 0 070 00 0200 7 2m 6 2 3 5 a O serseri NEEE EEEE RNEER E E EAEE 6 2 3 6 Radio interference suppression and electromagnetic compatibility 6 LANI Medical device ditective MDD nicas nta 6 L o tetonas m 7 2 4 1 Deon ne eT 9 oe pois Rau Pa bere iuit Deve abone essi PI M DOES 7 2 4 2 EE ege 7 2 4 3 Re A 7 2 4 4 Selecting the operating ARAU eegener 7 2 4 5 Location and TAA AU UU deir da ii on rtt e a da ik ba a kf e n tn na 7 DESCRIPTION OF CONTROLS AND CONNECTORS 8 3 1 1 Output connectors and control keys drawing unit on last page of service manual 8 2 Display indication ANE EN KOUN Lee ena deta da dto e eta kato anto da ay tape kk dai tas ER ETES 9 a a an len ai po kako ba de 10 3A ON III AA 10 3 4 1 Symbols on the front of the Cotes PA ias 10 3 4 2 Symbols on the right side of the Guidance E C nono nono non nn nono nnnnnnnos 11 3 4 3 Symbols on the left side of the Guidance E C
41. T signal When the measured vacuum 1s higher than the set vacuum the rhythm valve will be open until the vacuum reaches its normal level Vvac Both the channels A and B have their own valve which means that each vacuum channel can be selected separately VAC NRM A and VAC NRM B When a pulsed vacuum treatment is selected the V Rhythm signal will open and close the rhythm valve in accordance with the pulse selection All valves are Normally Closed and will be opened by means of a 24 VDC signal The water level in the reservoir is checked on constant base A block signal produced by U107 is presented to one of the metal detection pin inside the reservoir If the water reaches a certain level this signal will be transmitted to the second detection pin This signal is picked up by U106 and a signal is given to the microprocessor via the H20 level line If the microprocessor detects a full reservoir the following message on the screen appears water reservoir full It is still possible to continue the treatment If the message appears before the treatment 1s started it is impossible to switch on the vacuum unit Phyaction Guidance E C service manual version 0 5 Page 23 6 Ultrasound heads only Guidance C The Guidance C can be delivered with 2 different multifrequent ultrasound heads Model 891 1 cn 1 3 MHz Model 892 4 cn 1 3 MHz See technical specifications for more details The unit has two different ultr
42. able and electrode test Solid metal casing Faraday s cage Cover ABS Ultrasound output probe model 891 ERA 0 6 cm at 1 MHz ERA 1 0 cm at 3 MHz Frequency and 3 MHz BNR lt 5 Pulsfrequency 100 Hz Duty Cycle 10 20 30 40 50 100 Ultrasound output probe model 892 ERA 4 0 cm at 1 MHz ERA 4 8 cm at 3 MHz Frequency and 3 MHz BNR 8 Pulsfrequency 100 Hz Duty Cycle 10 20 30 40 50 100 3 4 Different symbols 3 4 1 Symbols on the front of the Guidance E C Therapy menu therapy Guidance menu vide Memory 5G System settings P Help 9 Go back e Stop Q Pause Y Amplitude me Phyaction Guidance E C service manual version 0 5 Page 10 3 4 2 Symbols on the right side of the Guidance E C Fuse 3 4 3 Symbols on the left side of the Guidance E C 4 Input output port for service purposes 5 Attention sensitive for electrostatic discharges A 3 4 4 Symbols on the back of the Guidance E C Water outlet lt Do not open device gt lt Equipotentiality 3 4 5 General symbols Electrotherapy Sequential currents SEL Iontophoresis tH Channel A H Channel B H Alternating channels ASE Channel A B H B Treatment time q Plate electrode m Vacuum electrode 3 4 6 Symbols current groups TENS currents I xt Unidirectional currents NMES currents S D curves Rheobase Ah Diadynamic currents EG h Chronaxie AQ Phyaction Guidanc
43. afety relay can be switched off Since the functioning of the safety relay is tested during the selftest it will generate an error code when the unit is in SERVICE mode Therefore the selftest must be bypassed This can be done by putting a jumper on CON 9 factory mode After both the SERVICE jumper and the factory jumper are changed the unit can be powered up without performing a selftest and without the possibility to deactivate the safety relay b It is very important that after repairing the unit the unit will be reset to OPERATE and the factory jumper is removed before the unit will be used to treat a patient Not following this instruction can bring the safety of the patient and the therapist is jeopardy In case the service engineer cannot solve the problem it is recommended to communicate the problem with the GymnaUniphy nv service department In order to communicate the problem the most efficient way a special error registration document must be used Fill out the service form as complete as possible Our service department will evaluate the call and propose further steps in order to solve the problem Phyaction Guidance E C service manual version 0 5 Page 43 12 2 Interpreting error codes In case of an error the following screen appears N Z ERROR AN Error number 602 gt Error value 1 13 Error value 2 24 Error value 3 Switch off the device and switch it on again It the ERROR a
44. asound output connector on which each head can be connected in every configuration The ultrasound head converts the electric signal into ultrasound using a piezo crystal This crystal with a diameter depending on the desired head size is glued in an aluminium cup that minimises electromagnetic radiation and enables the crystal to be used on to operating frequencies The aluminium cup can also be used as a second electrode if combination therapy is desired A separate electrotherapy device needs to be connected to the safety socket for combination therapy An OTP is installed in the treatment head to enable the micro controller to detect whether a head 1s connected and to recognise the type of head that is connected It also contains the calibration values of the head in question The ultrasound head has a visual contact control indication the treatment heads are fitted with light of two colours yellow and green The following configurations are possible Yellow light continuous indicates the treatment head gives US energy Yellow flashing indicates end of treatment Yellow green flashing indicates there is no contact during treatment Green flashing indicates just connect the US head device is reading the OTP data Green continuous light indicates the treatment head is selected Repairing of Ultrasound heads technical bulletin Phyaction Guidance E C service manual version 0 5 Page 24 7 Yearly checkup and safety test 7 1
45. be inherited in the new layout The last 2 alphanumerical numbers will begin with A SLL CES component change A CE track change Example Suppose that resistor R68 changes from 22 K to 100 K The actual hardware version 1AAA will be upgraded to 1ABA 11 1 Upgrading the hardware code Every hard or software change will be presented in a technical bulletin In case of a hardware change GymnaUniphy nv will provide the necessary components as well as a new hardware label This label must be put on the upgraded PCB The hardware code also has to modified in the serial eeprom See chapter 6 6 for more details b The user can easily see the hardware code of each PCB in the system settings menu see chapter 5 8 Phyaction Guidance E C service manual version 0 5 Page 42 12 TROUBLE SHOOTING 12 1 General information In case of a problem the unit will produce an error code Intermittent error codes can be recovered by means of the service software which gives an overview of the last 10 error codes If the error code is generated during the self test and the cause of the problem is difficult to detect there is a possibility to deactivate the control of the safety relay and skip the self test In order to deactivate the control of the safety relay both the jumpers of CON 3 on the main PCB must be put from position OPERATE to position SERVICE Putting the jumpers into SERVICE position will avoid that the s
46. ched on The tests are performed by the main micro controller in combination with the safety micro controller and take approximately 3 seconds When one or both of the controllers detect an error the output will be disabled A message will be shown to the user The Guidance E C has a safety relay RLY 13 This relay Normally Open is integrated in the applied part of channel A and Channel B same relay In case of a problem the safety relay will be switched off immediately and the patient becomes disconnected from the unit The safety relay driver circuitry is accessible to the main microprocessor for 3 seconds after power up of the unit After this period the main micro controller will not be able to switch the electrotherapy safety relay on any more Both the main and the safety micro controller are able to switch the electrotherapy safety relay off the safe state During the selftest of the unit the following items are checked Main controller test Safety controller test safety software test Electrotherapy DAC test Channel A Electrotherapy DAC test Channel B Electrotherapy relay test Electrotherapy safety comparator test AC DC relay test CC CV mode test 0 1 ON Q ND ra Phyaction Guidance E C service manual version 0 5 Page 13 5 CIRCUIT DESCRIPTION External device Ultrasound Power RS232 1 0 supply Relay circuit Microcontroller Amplitu
47. circuit When this resistance passes a certain level the unit will give a warning poor connection to the patient and the intensity will be reduced to 0 mA However the unit always measures the resistance of the output circuit GymnaUniphy nv recommends to replace the rubber electrodes twice a year The vacuum electrodes have a metal electrode and will not degrade in function of time Therefore the Phyaction Guidance E C has no vacuum electrode test However it is recommended to check and clean the surface of the vacuum electrodes twice a year In case of any irregularity replace the electrode Before checking the electrodes it is important that the patient cable has been checked and has proved to have a perfect condition see point 5 1 1 Please follow the procedure below to check both the rubber and the vacuum electrodes Select plate electrode test in the system settings menu Connect a patient cable to the channel A and put the electrode on top of each other Turn up the intensity to 10 V and move with the plugs and cable to detect a bad contact The unit will now display whether the electrodes are ok or bad Phyaction Guidance E C service manual version 0 5 Page 31 AN SYSTEH SETTINGS GY Plate electrode test Connect the electrode cable WIth electrodes ta channel A Put the electrodes an tap af ane another without sponges Ensure they make contact over the entire surface Set amplit
48. ctrode test r Cable test a System information 9 Text for start up screen 16 First screen GUI CANCE 11 Copy channel parameters OFF All self made programs 9 5 Total reset settings This menu resets the user settings as well as the counting working hours and the error history All these settings are stored in the serial eeproms on the main PCB If a main PCB needs to be replaced always perform a total reset 9 6 Special service menu In the service menu press the sixth blue key A special service menu appears Phyaction Guidance E C service manual version 0 5 Page 38 Ml GUIDANCE m SERUICE 1 Hi Code PCB 1HBH 2 Move cursor ta the right A Move cursor ta the left 4 Ready and save ET Plate A z 55 ET Lac A aod ET Flate E 47 41 ET Jac E or This menu allows to change the hardware code of every the PCB See chapter 8 for more information about the hardware codes It also gives an overview of the total working hours of each module The total working hours cannot be reset Phyaction Guidance E C service manual version 0 5 Page 39 10 UPGRADING SYSTEM SOFTWARE 10 1 General information The software of the Phyaction Guidance can be updated without opening the enclosure of the device There is a flash memory on the main PCB that can be reprogrammed using the serial RS232 interface on the left side of the unit The advantage of this system 1s that downloading software is cheaper than replacin
49. de generator amp Signal processing W Safety Current measuring Output circuit Control 5 1 Main PCB ELUS004 L100 The main PCB contains most of the electronic circuits of the Phyaction Guidance E C Since the layout of the PCB is mainly SMD based most repair works can only be done by GymnaUniphy nv Limited repair works may be done only after the permission of GymnaUniphy nv For this reason it is strongly recommended to keep at least one main PCB in stock in order to solve most problems in the most efficient way b The main PCB of the Phyaction Guidance E C is exactly the same as the main PCB of the Gymna Combi 500 Duo500 Some installed components are not used in the Guidance C but only in the Combi 500 5 1 1 Power supply The mains voltage is applied to a ringcore transformer so that one single voltage of 24 VAC appears at TP59 However due to tolerances on the line voltage the output voltage of the transformer may vary between 21 VAC and 40VAC The secondary of the transformer has a fuse of T SA L F1 that 1s installed on the main PCB Phyaction Guidance E C service manual version 0 5 Page 14 A SMPS supply built around U2 and TRI is used to provide the supplies for the amplifier circuits 18 V These 18 V signals are regulated to several other DC voltages by linear voltage regulat
50. e E C service manual version 0 5 Page 11 3 4 7 Symbols currents Direct current Iontophoresis Medium frequency rectangular current Rectangular pulsed current Triangular pulsed current Conventional TENS Low frequency TENS Brief intense TENS Random TENS Burst TENS Rectangular surge current Triangular surge current Biphasic surge current Biphasic intrapulse interval surge current 2 pole interferential surge current Russian stimulation Classical interferential surge current MF Diadynamic RS Diadynamic DF Diadynamic CP Diadynamic LP Diadynamic 2 pole interferential current Isoplanar vector field Dipole vector field Classical interferential current Rheobase and Chronaxie Rheobase and A Q S D curve rectangular pulse S D curve triangular pulse S D curve rectangular and triangular pulse 3 4 8 Parameter symbols Polarity for plate electrodes Alternating polarity for plate electrodes Polarity for vacuum electrodes Alternating polarity for vacuum electrodes Vacuum rhythm continuous 1 5 s high 1 5 s low 1 5 s high 3 s low 1 5 s high 4 5 s low Phyaction Guidance E C service manual version 0 5 s iiiFbRRLELLLIZESH Lr Nm CF E CH AQ E s p E s D E s p red red 4 e el Up t Ped Page 12 4 UNIT SELF TEST The self test checks proper functioning of the product especially the safety circuits and is activated every time the unit is swit
51. e time Parameters of the selected 5 Pulse shape channel 6 Base frequency T Top frequency a Freq increase time 3 Frequency hold time 1B Freg decrease time 11 Polaritu Window channel B is empty here since channel B is not activated 12 CC CM e Sometimes used as well 13 Background information for the oraphic representation of the Recommended EEE AS SEET e Current amplitude for programs from the 7 3 4 Objectives indication list Option line with the blue buttons Arrow to the right under the display the desired option indicates that you can can be selected scroll with the button gt Phyaction Guidance E C service manual version 0 5 Page 9 3 3 Technical specifications Number of memory places 500 999 Languages West European English German French Dutch South European Italian Spanish Portuguese English Treatment time 0 60 minutes Dimensions 424 x 308 x 163 cm Weight 9 kg Insulation class I type BF Voltage 110 127 220 230 of 240 Volt AC frequency 50 60 Hz settings via an external switch Power consumption maximum 96 VA Help screen for explanation on the selected electrotherapeutic current or parameter 2 independent channels with possibility to set different therapy forms per channel Extensive indication list with recommended therapy programs Sequential therapy forms Possibility to set various system settings and program parameters to the personal preference Built in c
52. enu will give detailed information of the last 10 errors that have been occurred This is an important tool to detect a problem especially when it concerns intermittent errors GUIDANCE ES Error history Total nr of errors z1 H Error Wall Waly Lali 2l 35 a 132 141 ZO 35 a 152 181 19 BAZ 24 2 zH ER 35 sl 129 24 ir baz 13 24 26 16 baz 13 25 26 15 35 a 129 23955 14 32 a 129 228 13 35 sl 129 218 12 35 sl 129 4648 Press Go back key to go back It is possible to see the last 10 errors Nr the error number maximum value Val 1 The second column gives the error number 9 3 Reset working hours In case electrodes or cables are replaced it is recommended to put the particular working hours indication to zero Select the accessory that needs to be reset and confirm with the same key to reset to zero E GUIDANCE i Reset uorkina hourz 1 Reset uork h plate electr A z Reset uark h vacuum electr A A Reset uark h plate electr E 4 Reset uark h Vacuum electr E Press again to confirm Phyaction Guidance E C service manual version 0 5 Page 37 9 4 Reset all user settings It is possible to reset all the settings the user had made to the factory settings The following items will be set to factory settings All settings of the system settings menu SYSTEM SETTINGS 1 Contrast 1n z Language Enal A Sound settings 4 Change pre zettinaz 3 Stand by time 14 68 Plate ele
53. er interface communication with LAS task AA EI 12 3 7 System task 6xx The system task is responsible for the correct start up and timing of the other tasks Error name Nr Description ERR SYS 60 Main an system ee task ERR SCPU Processor Processor memory self test self test 16 Microprocessor internal RAM check failed ERC 2 Wrong checksum in Flash program sector 10 Wrong checksum in Flash memory parameter section 11 Wrong checksum in Flash memory symbol sector 12 Wrong checksum in Flash memory help text sector 13 Wrong checksum in Flash memory help text sector2 14 Wrong checksum in Flash memory help text sector 3 15 Wrong checksum in Flash memory help text sector 4 16 Wrong checksum in Flash memory text sector 1 17 Wrong checksum in Flash memory text sector 2 18 Wrong checksum in Flash memory text sector 3 19 Wrong checksum in Flash memory text sector 4 64 External RAM check failed ERR_SELT PEU self test GC initial state of safety controller es initial state of safety controller 3 SELFTEST OK command not sent within 3 s e 3 rone reference voltage trom DR DL 4 Wrong software version of Wrong software version of safety controller controller 10 ET Error line sensed low by Siemens contr and Microchip 11 ET Error line sensed low by Siemens contr only dre sana lon he Mere au Phyaction Guidance E C
54. ers When this parameter is switched ON the selected current on channel A can easily be copied to channel B Just press the B key and the same parameters will be copied to the B channel Phyaction Guidance E C service manual version 0 5 Page 35 9 SERVICE MENUS The Guidance E C has a built in service menu which allows to check different important service issues To enter the service menu first go to the system settings menu LZ and then press the Pause key for about 5 seconds The following screen will appear Mi GUIDANCE E SERUICE 1 Counter working hours 2 Error historu A Reset uarkina hourz 4 Reset all user settings 3 Total reset settings 9 1 Counter working hours Enter this menu by pressing 1 This menu will give you the following information Ml GUIDANCE kol Counter working hours ET plate electrodes A iir ET vacuum electrodes A ET plate electrodes E ari ET vacuum electrodes E H Press Go back key to go back If you have detected a problem with the electrodes or with the patient cable this menu will show you how many hours the different accessories have been used It is obvious that this information will only be reliable if the customer didn t replace the electrodes or cables by himself Phyaction Guidance E C service manual version 0 5 Page 36 To reset this values see point 8 3 9 2 Error history Enter this menu by pressing 2 This m
55. g a microcontroller plus there is no risk of ESD because the device stays closed The Medical Device Directive does not allow end users to reprogram medical devices This is only reserved to authorized service personnel 10 2 Which tools are required In order to download the software a PC with a Pentium processor and DOS version 5 X or higher 18 required The file with the software to be programmed provided on 3 5 inch diskette A RS 232 cable with a 9 pins male sub D connector at the Guidance end and a 9 or 25 pins female sub D connector at the PC end An unzip program like PKUNZIP or WINZIP e e Eg DB 9 Male DB 9 Female 10 3 Downloading the software Start the PC and unzip the software on the disk Connect the RS 232 cable between the PC and the Guidance E C Switch on the unit and wait until the main menu appears Run the program Flashl bat when the device is connected to COM 1 or Flash2 bat when the device Is connected to COM 2 The PC will connect to the Guidance and the download procedure will start The following screen will appear on the PC Phyaction Guidance E C service manual version 0 5 Page 40 FLASH Programming Monitor V2 1 COMI File NONE status FLASH app P Program FLASH T Terminal X eXit Display menu The Guidance will show a special screen indicating the KB that already have be downloaded When the download procedure 1s finished after about 10 minutes the
56. he supplied connector Turn up the intensity to 10 V and move with the plugs and cable to detect a bad contact The unit will now display whether the cable is ok or bad Phyaction Guidance E C service manual version 0 5 Page 33 AN SYSTEH SETTINGS GY Cable test Connect the electrode cable to channel A and short circuit the male connectors of the cable uith the test plua Set amplitude to 16 L Press Go back key to go back Perform the same test for the other patient cables 8 8 System information SYSTEM SETTINGS System information Serial number PCB 12541 Ap Softuare Version A 99 Software version MC 1 A5 Last calibration date pap zig Hi version main PCE 1HHH Press Go back key to go back This is an important screen for the service department In case of a problem ask the customer to read the parameters of this page It might help to detect the cause of a problem Phyaction Guidance E C service manual version 0 5 Page 34 8 9 First screen When the unit is switched on the unit will give a start up screen It is possible via the first screen menu to program the name of the Physiotherapist into this start up screen SYSTEM SETTINGS Text for start up screen Textbox FHYSI OTHERAP Y JAHSEJ amp Textbox 1 Move cursor to the left z Move cursor ta the right A Move to next line 4 Erase line Ready and save 8 10 Copy paramet
57. ith figure 1 The output currents matches the values shown on the display within 10 The two yellow lights next to the output connectors are on The polarity changes over to negative when set to RED for both channels The warning message bad connection to patient appears when the load is disconnected DR After this warning appeared the intensity is decreased to zero Phyaction Guidance E C service manual version 0 5 Page 27 With vacuum selected the yellow lights next to the vacuum outputs turn on when the intensity of the corresponding channel is increased from zero Select now program number 24 in the same way as described above isoplanar vector Pass Fail field Turn up the intensity to maximum with the control knob The output signals as seen on the oscilloscope correspond with figure 3 and 4 The output currents matches the values shown on the display within 10 Select now program number 111 in the same way as described above diadynamic DF Turn up the intensity to maximum with the control knob Pass Fail The output signals as seen on the oscilloscope correspond with figure 2 The output currents matches the values shown on the display within 10 7 4 4 Electrical Safety Test According to VDE 0751 Parameter Meas Value Limit Comments Pass Fail 7 4 5 Result of safety inspection The Guidance E C with serial number has passed failed Place Safety Inspector For the User
58. ng the language option You have the choice from various languages Once selected the equipment will use the language you have chosen 2 4 5 Location and transportation The equipment must be set up horizontally and stable You must ensure that the perforated sections on both sides of the casing are not covered up thus hindering air circulation Objects must not be placed on the equipment and you must ensure that no liquid enters the equipment Empty the watercontainer of the vacuum part before transportation of the unit Use the original packaging if sending of the unit 1s necessary The appliance 1s capable while packed for transport and storage of being exposed for a period not exceeding 15 weeks to environmental conditions not outside the following ranges e an ambient temperature range of 20 C to 60 C e a relative humidity range of 10 to 100 including condensation e an atmospheric pressure range of 500hPa to 1060 HPa Phyaction Guidance E C service manual version 0 5 Page 7 3 DESCRIPTION OF CONTROLS AND CONNECTORS 3 1 1 Output connectors and control keys drawing unit on last page of service manual Tilting display Blue keys for menu option or parameter selection Blue keys gt and lt for scrolling through the lists Key lt gt for increasing or setting a parameter Key for decreasing or setting a parameter Key for channel choice A Key for channel choice B Amplitude controller for channel A 9 Am
59. ntrol B ERR E PARA Parameter handling electrotherapy output A ERR E PARB Parameter handling electrotherapy output B ERR E TASK Main module for electrotherapy task A A ERR E TASK Main module for electrotherapy task B B Phyaction Guidance E C service manual version 0 5 Page 46 12 3 4 Ultrasound task 3xx NOT FOR GUIDANCE E The ultrasound task is responsible for control of the ultrasound therapy including the detection of placement and removal of ultrasound heads Error name Nr Description ERR U CTRL Ultrasound task state machine ERR U CONT Contact detection ultrasound ERR U HEAD Detection of placement and removal of ULS heads ERR U SCAN Support for ultrasound head scanning production ERR U TASK Main module for ultrasound task 12 3 5 Laser task 4xx NOT FOR GUIDANCE E C The ultrasound task is responsible for control of the laser therapy including the detection of placement and removal of laser probes Error name Nr Description ERR L CTRL Laser task state machine ERR L PRB Detection of placement and removal of LAS probes ERR L TASK Main module for laser task 12 3 6 User interface task Sxx The user interface is responsible for communication with the user Error name Description Memory E2PROM support Phyaction Guidance E C service manual version 0 5 Page 47 Error name Nr Description ERR PAR Parameter support ERR PLST Parameter list ERR TASK Main user interface task module Us
60. o LIS YI Hvdrm 300r bp 3 e Bed ga HEU AG 007 UTs18eg8uy BE Ens TE pequnocou adie a UF EM pajjeu Sivavuvodwoo ZY LADA 3AVS IC AVISIBaEU UO DS om peu GE er e JO Dayueu Sivevoduwoo azts LO HO BZ E E diva Teuotiadoa s uU 3 TM pe jeu Sivavodwoo X T WW ST A LEE OE en NAJA ZNIMNVYASNVA big PEE ee E E E BH 60T3 v00S HIGWnN N3Nn200 Hut we ii Cine gt TZESVA V INNYHJ LINJYIDJ td A N DU puJeiu Aydiun ENEE COINA YT m gLdNW VLTZSOWL il EE BEKI GRO S 8 e e So Ed JJA Vtdl ET FI WOT OBH M o 0857 e GSOdA OT WAN E WE Eski Eg ZE SWE d AG JOA A V INIYUNDIN 5 GNIK SES V J JJ Be ar V vvdrm e e 00r LT gO N ggu Sic Jeet
61. on The installation is in reverse order of the removal procedure Use a small screwdriver to guide the flatwire into the chassis Remove all the dust inside the plexi cover and on the display with a damp cloth Watch out do not scratch the plexi front cover 4 If the black paint on the inside of the plexi front cover is scratched use a black marker to correct it Phyaction Guidance E C service manual version 0 5 Page 57 15 SPARE PARTS 15 1 Phyaction Guidance E C Unit type PHYACTION GUIDANCE E C incl std toebeh 115 230V Reference number 114674 116199 Version 10 Ordering number Description Service code 15519 Water outlet sealer GUIDANCE M3x3mm S black 30017 Water tank assembly S 30018 LCD screen mounted only housing S 30343 PCB vacuum front PCB S 30344 PCB main S 31253 Connectorplate plastic S 31258 Dose knob vacuum plastic S 31260 Frontpanel 800 topcover plastic V1 2 S 31511 Tube watertank outlet 30cm S 31559 Cableassembly encoder 800 S 31561 Cableassembly output ET 800 S 31562 Cableassembly main output 800 S 32480 Water drain connector plug 4mm S 35705 Fuse 2A 5X20mm Slo Blo S 37224 Vacuum outlet connector chromium 1 piece S 30015 Mains entrance 0 30016 Silicone keypad 800 0 30643 Subfront connectorplate 800 metal 0 30646 Foil LCD module 800 0 30650 Foil for fan 0 30651 Bottom chassis 800 version 1 2 metal 0 30653 Subfront 800 versie 1 2 metal topcover 0 subplate 31252 Led glass
62. ontroller uses external RAM U42 and U41 256K each A separate display controller U49 SED 1353 RAM U39 and U40 256 K each perform the controls of the LCD display U50 is a programmable peripheral interface IC which drives mainly the relay circuit Other components near the microcontroller circuits are Temperature sensor RT1 measuring the temperature of the heatsink which controls the working of the fan in the following way Temperature gt 55 C switch on fan Temperature lt 45 C switch off fan Temperature gt 98 C error and switch off all amplifier circuits Phyaction Guidance E C service manual version 0 5 Page 15 U52 reading OTP values not used in Phyaction Guidance E C Microcontroller guard component U 64 Amplitude generation circuits U14 produces a DC signal in relation to the demanded intensity The output signal of U14 is the reference value for U24 that produces the amplitude modulated AM signals for the LF currents MF DF CP LP IF The output signals are connected to the signal processing circuits 5 1 3 Safety control circuits The main goal of the safety circuit is to protect the patient and the Electrotherapy circuit from too high currents In case of an error the safety relay is switched off and a error code is generated A special safety controller U36 PIC16C74 monitors and controls all the safety components used in the Guidance E C b Note that even when an erro
63. ors 18VDC TPI 15V DC TP11 12VDC TP2 SVDC TP4 15VDC TP72 18VDC TP3 22 VDC TP73 non stabilized for LCD contrast The 18 V and 18 V are used as supply for the amplifier circuits Therefore they are constantly monitored by U45 In case of a strong deviation the voltage lockout UVLO signal becomes LOW the safety relay will be switched off and an error will be generated The UVLO signal is connected to the safety processor Since the 18V is used in the feedback loop for the SMPS the 18V may fluctuate In order to keep this voltage within the limits there is a clamp system built around Q14 installed onto this supply VCC 5 VDC is also generated by a SMPS built around U30 The VCC is also constantly monitored U46 If this voltage goes below 4 75 V there will be a reset signal POR and the safety system will be activated The POR signal is directly connected to the microcontroller 5 1 2 Micro controller Circuits The 16 bit micro controller U3 Siemens C167 1s the heart of the system that controls and drives all the other circuits and signals together with the safety controller U36 PIC 16C74 The program software is stored in a flash memory U54 U55 AM 29F800 An upgrade of this software can only be done by means of a PC which must be connected to the unit in order to download the software chapter x The actual version of the software 1s displayed in the start up screen The micro c
64. plitude controller for channel B 10 Therapy menu key Li 11 Guidance menu key sis 12 Memory key E 13 System settings key 14 Help key 15 Go back key e 16 Pause key o 17 Stop key 18 Output channel A for plate electrodes 19 Output channel B for plate electrodes 20 Connections for the vacuum electrodes for channel A 21 Connections for the vacuum electrodes for channel B 22 Yellow pilot lamps light when the channel concerned can produce current output 23 Vacuum controller 24 Stand by lamp indicating that the appliance is connected to the mains and that the appliance is turned on 25 Main switch 26 Fuse holder 27 Mains entry 28 Label with appliance data 29 Connector to connect to the potential compensating mains 30 Drain tube of the water reservoir 31 Vent hole 32 RS 232 connector for service purposes 33 Mains switch 34 Patient cable 35 Plate electrodes 36 Vacuum tubes po LO O oN Phyaction Guidance E C service manual version 0 5 Page 8 3 2 Display indication overview Title of the screen it indicates which Symbol representation option you chose for presetting the Program of the selected current treatment number Window channel A with data about remaining treatment time Selected channel activated electrode set amplitude current amplitude bargraph CC CV Conventional TEKS 1 Treatment time 2 Macuum for this current A Vacuum rhythm 4 Puls
65. ppears again contact the service department of your supplier Software version 1 04 Latest calibration 09032000 serial number PCB 1234130 Hardware version PCB IAAA The unit gives an overview of the actual error The error code can be traced in the error list chapter 11 3 Different codes Error number defines the software module in which the error 1s detected Error value 1 the first error value which defines the individual test in the module which actually generated the error Error value 1 an additional value which may give more information about the detected error Error value 2 not used Phyaction Guidance E C service manual version 0 5 Page 44 12 3 List of error codes This chapter defines the individual error numbers Each error number is related to a software module For each error number the code used in the software is defined the number is defined and a short description about the purpose of the software module is given 12 3 1 Drivers OXX The driver layer contains modules responsible for direct interaction with the hardware and some general utility routines Error name Nr Description ERR ADC Analog to digital converter subsystem of the C167 Not used 2 ERR_ASCMAI Serial interface data interpreter N ERR CCH 6 Capture compare registers subsystem of the C167 ERR CHOP 8 Electrotherapy chopper________________ ERR CRC 9 Software utility CRC checksum support
66. put voltage is linear proportional to its input voltage VUS set Thus the micro controller can adjust the ultrasonic power by setting VUS setproportional to the square root of the desired output power 5 4 3 Power stage The power stage is a switched balance class D end stage Power MOSFETs are used as switching elements The MOSFETs are driven by buffers U506 that also take care of a small delay in driving the MOSFETs to prevent them of being active simultaneously If either one of the MOSFETs has become defective both of them should be replaced Phyaction Guidance E C service manual version 0 5 Page 21 5 4 4 Impedance matching The ultrasound crystal is mainly a capacitive load Its impedance differs among other things with the size of the crystal and its operating frequency For this reason the micro controller can match the impedance by switching one or two inductors and when necessary capacitors in the output stage 5 5 RS 232 communication This interface 1s used for e externally programming the device service e internally programming the device production e future applications The signals that are used for sending and receiving data from and to an external device must be isolated according to IEC601 Also the supply must be isolated The supply is isolated via a transformer and the signals are isolated with opto couplers At both sides of the opto couplers a send receive IC is necessary to comply to the standard le
67. r is not longer occurring the output state of the RS flipflop stays low and the safety relay remains off The unit must be restarted in order to continue any treatment The following items are constantly checked Measured current in relation to the set intensity Comparator U1 and DAC U25 guard the output level U1 compares the output signals from the current measuring circuit CUR A SAF CUR B SAF with the reference voltages FDBACK SAFA FDBACK SAFB These reference voltages are generated by the safety DAC U25 and are setup by the microprocessor U36 In case of a problem the PROTECTION signal will go LOW and the safety relay is switched off The limit values are different for each current waveform plus they depend on the set intensity level The safety controller sets the limit for each current waveform via the AD converter U 25 Proper functioning of both the microcontrollers If the PIC microcontroller detects a problem with the Siemens microcontroller it will switch off the safety relay by making the MC SRY off signal high microcontroller safety relay off If on the other hand the Siemens microcontroller detects a problem with the PIC it will switch off the safety relay by making the S SRY off signal high Siemens safety relay off VCC In case the VCC 5V goes below 4 75 V an error 1s generated via the POR line which causes the safety relay to switch off Rotary channel A and B The value of the
68. s a measure for the output current and the current is fed back via R3 to the input of U9 in order to keep the current continuous POW A Phyaction Guidance E C service manual version 0 5 Page 18 Configuration 3 It is similar to configuration 1 but with the difference that the signal POW A is not a fixed value but is variable and a measure for the output amplitude and shape Just as with CC the maximum current is limited by IPAA POW A IPAA Configuration 4 Q1 is excluded and the gate of Q2 is kept HIGH and there are two feedback circuits namely the voltage at the output of U9 via R109 and the current through R3 which will give the output stage a virtual internal resistance Short circuiting the output the output current will not exceed its maximum value POW A 5 1 6 Current measuring circuits At the output the current is measured by the current measurement circuit The current measuring circuit translates it into a DC level that serves as an input for the Safety control circuit and for contact detection 5 2 Output circuits Phyaction Guidance E C service manual version 0 5 Page 19 The outp
69. ters the pre settings menu Change pre settinas 1 Save neu settings z Restore lniphu pre settings A Restore ALL Uniphy pre sets 1 2 3 GymnaUniphy nv advises standard treatments in the THERAPY menu Ls However these parameters can be changed and stored in memory Select a treatment in the Therapy menu and change one or more parameters Now press the System settings key an go to the pre settings menu The new parameter of this program can now be stored by pressing key 1 save new settings In order to restore the Uniphy pre settings of one particular therapy first select the therapy and then press the system settings key Press key 2 in order to restore the original Uniphy settings for this particular program In order to restore all the Uniphy presets for every fixed therapy press key 3 8 5 Stand by time The standby time can be changed to 20 min 15 min 10 min 5 min or can be switched off 8 6 Plate electrode test Phyaction Guidance E C service manual version 0 5 Page 30 It is normal that rubber electrodes degrade in function of time The resistance will raise irregularly over the surface of the electrode As a result the current path will be the highest on the points with the lowest resistance and there will be a risk of burning the patient s skin In order to assure that the customer always works with accessories that are in perfect condition the unit constantly monitors the resistance of the output
70. tion feel free to contact us GymnaUniphy nv Service department Pasweg 6a 3740 Bilzen Belgium Tel service dept 32 895 10560 Fax service dept 32 89510561 E mail service dept service gymna uniphy com 2 3 Safety aspects 2 3 1 Electrical safety The equipment can only be used in areas with provisions in accordance with current statutory requirements Pay particular attention to the use of protective earth otherwise the patient leakage current can rise above the permitted limit for type BF equipment Phyaction Guidance E C service manual version 0 5 Page 5 2 3 2 Explosion safety The equipment is not suitable for use in areas where flammable gasses or vapours are present Therefore remove the mains plug from the socket before the area in which the equipment is located is disinfected since some disinfecting solutions evaporate and subsequently form an explosive mixture 2 3 3 Operational safety Using the equipment in the vicinity of short wave or microwave equipment can influence the output of the unit Using this equipment when high frequency surgical equipment is connected to the patient at the same time can result in burning under the electrodes Patients who have electrical implants 1 e pacemaker may only be treated following medical advice The equipment is not suitable for use in damp areas The equipment may not be disinfected or sterilised The equipment contains a number of safety systems
71. to each configuration Configuration 1 mode CC pulsed tens rectangle triangle diadynamic Configuration 2 mode CC continuous interference direct continuous Configuration 3 mode CV pulsed tens rectangle triangle diadynamic Configuration 4 mode CV continuous interference direct continuous Phyaction Guidance E C service manual version 0 5 Page 17 Configuration 1 The circuit can be redrawn as in the figure below POW A gt POS A NEG A IPAA The output of U9 TDA 2040 is a DC signal and is connected to the middle connection of the transformer One side of the transformer is connected to Q1 and the other side is connected to Q2 The gates of Q1 and Q2 are connected to POS A and NEG A respectively The soures of Q1 and Q2 are coupled via Q7 and R3 to ground The current through Q7 is controlled by the output of U65 IPAA is a measure for the current through Q7 and so controls the output amplitude The measured current over R3 is fed back to the input of U65 this way the current is kept constant In case of a rectangular or triangular signal the signal at the secondary of the transformer will be rectified Configuration 2 In comparison with configuration 1 Q1 will be excluded from the circuit and POS A and CURRENT A will be continuous HIGH The amplitude of POW A i
72. tor Power stage P Voltage Controller b pue Set Seen Ei eme Cog eue al uei TBE des de Ne tly Force e aes i denis fe efte pay ON IT 5 4 1 PLL The frequency generator is controlled by the micro controller and it contains a voltage controlled oscillator and a PLL phase locked loop Each ultrasound crystal has different characteristics Every crystal is measured during production and an optimal working frequency and the bad contact frequency is determined This means that the ultrasound output stage works on different frequencies according to which head is connected In order to program different frequencies a PLL is used in combination with a VCO To obtain a symmetrical steering signal for the power stage the modulator switches its outputs with half the input frequency Also the modulator mixes the duty signal synchronously with the ultrasound frequency to prevent spikes An amplitude modulation with 100 modulation depth the signal being switched on and off is the result of this mixing The calibration values of each ultrasound head are stored in an OTP which is installed inside the ultrasound head In case of a replacement of the crystal the OTP has to replaced as well comes with the crystal 5 4 2 Voltage controller A pulse controlled downward converter voltage controller is used to convert the 24V to the desired ultrasound voltage The voltage controller 1s made in such a way that its out
73. ude to 16 L Press Go back key to go back b It is recommended to replace electrodes twice a year 8 7 Cable test Important a cable test can only be performed through channel A for both the plate electrodes cables and the vacuum cables 8 7 1 Vacuum cable test Select cable test in the system settings menu Connect the first vacuum cable to the channel A output by making a shortcircuit Turn up the intensity to 10 V and move the plugs and cable to detect a bad contact The unit will now display whether the cable is ok or bad Phyaction Guidance E C service manual version 0 5 Page 32 AN SYSTEH SETTINGS GY Test vacuum tube Short circuit the vacuum output sockets af channel A by usina the Vacuum tube uou Want ta test and increase the intensity of the vacuum Set amplitude to 16 L Press Go back key to go back Replace the cable if the test gives a negative result Perform the same test for the other cables b Due to lime residues a bad contact between the vacuum cable and the output plug may appear resulting in a negative test of the vacuum cable In order to prevent this GymnaUniphy nv recommends to remove all the vacuum cables once a week in order to scratch off the lime residues 8 7 2 Electrode cable test Select cable test in the system settings menu E Connect the patient cable to the channel A without the plate electrodes and make a short circuit with t
74. ut module consists of 2 electrotherapy channels and 2 vacuum channels with 4 vacuum connections Each configuration of electrotherapy and vacuum is possible The output PCB contains of the output circuitry for the use of electrotherapy with or without vacuum Whether vacuum is used or not is determined by the micro controller via several relays Both channels can be switched off separately via micro controlled valves The vacuum can be set between 50 and 400mBar in the continuous mode In the pulsating mode the vacuum can be set between 60 and 600mBar The level of the vacuum is controlled by means of the vacuum pump and an air inlet via a valve The water that comes into the system is collected into a water reservoir The water reservoir can be emptied via an external tube 5 3 Console circuits The console module is the module that forms the interface to the user The interface consists of e A rubber keypad that makes the contact via a membrane keyboard on the console PCB The matrix of the keys is controlled by the micro controller e Two encoders directly controlled by the micro controller e The converter for the backlight controller Phyaction Guidance E C service manual version 0 5 Page 20 5 4 Ultrasound circuits only for Guidance C Frequency Generator PLL VCO mn US OUTPUT Modula
75. vels The maximum speed of the connection is mainly determined by the speed of the opto couplers which is 38400 bits sec baud rate Downloading new software will take approximately 10 minutes 5 6 Vacuum unit 5 6 1 General information The Guidance E C has a 2 channel integrated vacuum module with the following specifications Continuous mode 50 gt 320 mBar 10 on maximum level Pulsed mode 65 480 mBar 10 on maximum level Rhytm on off time sec 1 5 6 0 1 5 4 5 1 5 3 0 1 5 1 5 The vacuum module has the following components Water reservoir Pump Rhythm valve Valve channel A Valve channel B Vacuum PCB Since the electrotherapy channels work completely independent it also goes for the vacuum channel This means that the therapist 1s able to work eg on channel A with electrodes and on Channel B with vacuum Switching on off the vacuum can be done by means of a parameter selection on the therapy menu The vacuum pressure for both the channels must be set by means of the vacuum knob on the front side of the unit Phyaction Guidance E C service manual version 0 5 Page 22 5 6 2 Vacuum circuits The vacuum is measured by means of the vacuum sensor S101 wheatstone bridge The measured value is compared with the set value VACSET by U102A and a PWM generator U102B controls the pump when necessary The vacuum intensity can be set by means of a knob on the front of the unit VACSE
76. vice manual version 0 5 Page 26 Checkup and safety document 7 4 1 1 Visual inspection Pass Fail The device record is present and kept up to date The user manual and the safety manual are present Device label and suppliers label are clearly readable The enclosure of the appliance is undamaged Mains entry equipotential post and the sub D connector are undamaged Patient cable connectors and vacuum posts are undamaged The control knobs keys and display are undamaged Only accessories listed in the user manual are being used SS Mains wire electrodes and cables are undamaged 7 4 2 General Functional Inspection Pass Fail The automatic self test on power up does not report any errors The display does not show any defective pixels or lines All keys are functioning The control knobs operate properly 1 mA click up when turning clockwise and down when turning counter clockwise respectively HF 7 4 3 Functional Inspection Electrotherapy Pass Fail Connect two 500 Q loads to both normal electrode pairs Attach to them an oscilloscope black to ground with its controls set to the values as shown in the pictures below Press Dis and select Program number 3 softkey Set the program number to 138 with the lt gt key and go to selected program with the 1 softkey direct current Turn up the intensity of both channels to maximum with the control knobs The output signals as seen on the oscilloscope correspond w
77. way that the internal wires stay perfectly isolated 14 3 Front cover Removal First complete 12 1 and 12 2 Disconnect the vacuum tubes pull them off and the pump connector the valve connector and the water level detector Remove 2 screws on the left and right side of the cover plus 5 black screws on the bottom plate and take away the complete front cover Caution Do not pull on the wires to disconnect the cables Use a small screwdriver to Lift the connectors out Installation The installation is in reverse order of the removal procedure The tube of the vacuum sensor must be installed on the top of the sensor Phyaction Guidance E C service manual version 0 5 Page 54 14 4 Output filter PCB d Y y Pull Plastic isolation plate Pull Removal First complete 12 1 12 2 12 3 Remove the four screws that fix the output filter PCB onto the front chassis GENTLY slide the filter PCB away from the front cover Caution Take the filter PCB on the corner of the PCB and don t touch the components Installation The installation is in reverse order of the removal procedure Do not forget to install the plastic isolation plate under the filter PCB 14 5 Vacuum PCB Removal First complete 12 1 12 2 12 3 12 4 Remove the 4 M10 nuts that fix the vacuum output connectors Remove the 2 screws that fix the vacuum sensor onto the chassis Remove the 4 screws that fix the Vacuum PCB to the front chassis Phyaction Guidance E C

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