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SERVICE-MANUAL Arco-2000 Arco-1000 MBC-601 MBC

1. BlArco3000 M MA Argon Frontpanel modular design Gascontrol board Kl Handpiece recognition output unit assignment relays PE monitoring Bipo recognition E vo 2 E SN F a Ss 7 S E E EI mains board 2 low power supply E mains relays screening 5 Synchroboard with BNC socket ot 25 ne 5 Zs E Loudspeaker LoudspeakerPotentiometer not valid for A 3000 2000 13 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Arrangement of modules of the Arco 2000 5 T 5 A 25 ER E So Ba 2 een 1 el el BI 600 2000 MA Argon Frontpanel modular design Gascontrol board 1 Handpiece recognition output unit assignment relays PE monitoring Bipo recognition rectifier E e 5 EIS gt s E a CS Ka E N mains board a low power supply s mains relays E screening Synchroboard with BNC socket vt Gasconnection 5 o E 2 22 we N SS SS Loudspeaker d d LoudspeakerPotentio
2. Fehler Textmarke nicht definiert layout plan 2 2 2 ee Fehler Textmarke nicht definiert circuit EIN Fehler Textmarke nicht definiert layout EIERE Fehler Textmarke nicht definiert circuit plans H nn Fehler Textmarke nicht definiert layout plange eege Fehler Textmarke nicht definiert circuit plan 1 1 a nnne nnns Fehler Textmarke nicht definiert 1 Fehler Textmarke nicht definiert Ee UU LE Fehler Textmarke nicht definiert circuit plans 1 2 rue anna Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert not valid for A 3000 2000 9 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 1 Overview 1 1 General description of the Arco units MBC units The RF surgery equipment makes the following applications available to the user Cutting in steps 1 5 Cutting with Blend function in steps 1 5 Coagulation modes Soft Force Spray Argon Bipolar Coagulation Bipolar Cutting The desired mode is roughly selected on the front panel by 5 pre select buttons and can then be fine adjusted by arrow buttons The desired mode can be activated by footswitch or fingerswitch at the handpiece Application of function fields monopolar
3. VIUEN 519 0 1 I 5 lt _ T 10 N ne 193 19AU09 s Jogrdure T 105025 IANA smd pue qv i I E jno andojeuy 1 10suog 7 not valid for 3000 2000 2 not valid for 2000 25 08 2004 S ring Service Manual Arco and RF units 12 Service and adjustment procedures This chapter is intended to support the trained service technician in case of repair for troubleshooting and for calibration It shall be stated once more that Modifications and repairs on this equipment must only be performed by the manufacturer or by persons authorized by him If non authorized persons perform modifications or repair on this equipment or its accessories the manufacturer undertakes no liability Furthermore the warranty expires in this case Most adjustments of the equipment can be done within the Service mode For these adjustments it is not necessary to open the equipment The adjustments are performed with the keyboard on the front panel An adjustment of modules inside the equipment shall be carried out only in exceptional cases because the potentiometers are sealed after adjustment and de adjustment is nearly impossible After every adjustment the potentiometers are again sealed with securing lacquer The LEDs inside the equipment are for functional checks and allow easy troubleshooting After switching on
4. e gt gt S gt N x gt 2 2 E Jua md gt in 5 S sb gt S 8 gt 2 de n H m 8 gt 2 9A AN 2 4 4 1284 48814 so npour x eq 48814 not valid for 3000 2000 40 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 Service Manual Arco and RF units S ring 25 08 2004 Block diagram RF Output board B adeyfoA B Ai 103P ogej oA yeod Jody NI xa ISIL MHO 9 19 19AU09 ISIL L LSL 414 LSL NOW dId NOW 19 19AU09 AS SNUIS E 75 S amp AT RE snqo npour S 3 2 m gt ASH SOVd un Sng IVIS I E c D p ova 8 lt gt 19 8 gt gt AQT S r S c sng 9 I T 3 not valid for MBC600 not valid for Arco 1000 41 7 not valid for 3000 2000 2 not valid for 2000 25 08 2004 S ring Service Manual Arco and RF units 8 Description of coagulator module 8 1 Gener
5. I 181 AO AST 25 08 2004 3 not valid for MBC600 not valid for Arco 1000 232 not valid for A 3000 2000 not valid for Arco 2000 25 08 2004 S ring Service Manual Arco and RF units 6 Description of Cut module 6 1 General description The cut module delivers the RF signal for the cutting process Furthermore the signals for contact coagulation desiccation respectively force coagulation are generated For pure cutting a sinusoidal signal of approx 350kHz with low distortion is used The maximum output voltage is 70V By means of an output transformer on the RF output module it is transformed to 420V monopolar respectively 280V bipolar The maximum output current is 1 2A the maximum output power is 350W In order to enhance coagulation during cutting Blend the signal can be pulsed The pulse repetition frequency is variable within the range 20 to 400Hz The duty cycle can be adjusted from 0 to 100 Thereby a variation between pure coagulation coagulating cut and pure cut is possible In order to enhance the quality of cutting different types of tissue the module possesses an arc detection and regulation Due to an internal power and current limiter the CPU is relieved from these control tasks If the module is used for coagulation the arc detector switches off for a short time programmable from approx 0 5 to 100ms in case an ar
6. 42 8 3 Technical data coagulator module eese eene eene nennen nnns 43 8 4 Signal SNAPOS E 43 Block diagram Coagulation module fig 8 1 zuuunnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 45 9 Description of handpiece recognition eese 46 91 DEDE 46 9 2 FUNCION 46 Block diagram Handpiece recognition board 47 10 Description of interface board eese 48 Block diagram eene nennen nnns 49 11 Description of 50 11 1 External gas system nent inne nna anie nnmnnn nnmnnn nnmnnn nnmnnn nann 50 11 2 Internal gas system gas control unit and gas control board 50 15 21 General description ete db tl HER eu nitla 50 11 2 2 Principle of 50 11 2 3 Design of gas control unit teet ed ee ete ad eg verdee 50 T1 2 4 Technical data eacus e a ed gt Hl 50 Block diagram fig 11 1 51 11 3 Description of gas control board esses
7. Fehler Textmarke nicht definiert layout EI Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert mains board EE Fehler Textmarke nicht definiert layout UI Fehler Textmarke nicht definiert circuit plans 1 2 ee Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert high power supply Fehler Textmarke nicht definiert layout Plan err Fehler Textmarke nicht definiert circuit plans 1 3 TEE Fehler Textmarke nicht definiert not valid for A 3000 2000 8 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units circuit plans WE Fehler Textmarke nicht definiert circuit plans 3 3 TEE Fehler Textmarke nicht definiert gas CODITOL Fehler Textmarke nicht definiert layout plan a tt aren Fehler Textmarke nicht definiert circuit plans 1 2 cece ace nn ae aa Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert synchronization Fehler Textmarke nicht definiert layout Fehler Textmarke nicht definiert circuit plans VE Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert Frontpanel Arco HF
8. eeeeeeeeeeeeeeeeeenee nennen nnne nnn 28 not valid for A 3000 2000 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 4 1 General description nodes hinein DII 28 4 2 Connection to other units nnnm anni nns s sna sa nnn n nnmnnn 28 42 1 Connection to CPU iue ee pe Le toten te rae etae end 28 4 2 2 Connection to low voltage Supp 28 Block diagram Frontpanel cc cccce ecce ecce ecce eerte 29 5 Description of high power supply eene 30 5 1 General description 30 5 2 High power supply design and function eere 30 5 3 Technical e s 31 Block diagram High power supply eceeeeeeee nennen nennen nnns 32 6 Description of 33 6 1 General description 33 6 2 Final stage and output filter 33 6 3 Oscillator and driver aene 34 6 4 Switching Stage es 34 6 5 Short circuit switc
9. High power supply Coagulator module spray function Cut module 12 5 1 Adjustment of high power supply 1 Necessary equipment Digital voltmeter 2 Adjustment Adjustment of output voltage Set equipment to CUT step 5 320W without blend and activate push button at handpiece Adjust output voltage to 100V 1 with potentiometer measurement at J3 pin 4 and 5 at the power supply The handpiece is activated without load Adjustment of current limiting the current limiting has been precisely adjusted at the factory and shall only be readjusted in case P2 has been turned inadvertently or if limiting is activated during RF cutting although the module is intact and if the fuse on the mains relay board frequently blows measure voltage at pin 2 U8 to ground and adjust to 1 0V 12 5 2 Adjustment of coagulator module Remark With equipment of Arco series the pulse frequencies which are of influence on the output power are delivered from the synchro board Here together with the coagulator module first the frequencies and then the pulse rate have to be adjusted For equipment of MBC series without a synchro board this is does not apply Necessary equipment RF power meter with load resistors of 100 and 2000 measuring range up to 200W m i0um Frequency meter measuring range 0 to 100kHz e g appropriate DMM RF Handpiece resp argon handpiece for open surgery Adjustment procedure Adjustm
10. E V VLAS ALINA Ei las a na LASOMI vas gt 9J 21499 ag 8 sen E VLAS Md 45 1023002 mpm 1038150 MASTNA smd 0119 09 DOJIS ONOW 5 MIAS AAN lt 3 E TAS Lee LHS Md m DNO Jo 9uoo uoroo es TAS 4 juo no oSue 1 lt 901 23 95 rn gt adue Jondnin A 03 NO LAS I NO lt A NMOG I Y 100 4H 98plq SOW Huer e Bi lt _ 1910 J9ALID 1 Indyno 81 J0Je PSO odrg ouow odrg ouopy aTAVNA NO ND 3 not valid for MBC600 not valid for Arco 1000 37 not valid for A 3000 2000 not valid for Arco 2000 25 08 2004 S ring Service Manual Arco and RF units 7 Description of RF output module 7 1 General description The RF out module transfers the RF signal of the cut and coagulator module to the handpieces and monitors the delivered RF power It consists of the two boards HFO_A and HFO_B The first board _ contains the output transformers necessary for the supply of monopolar and bipolar handpieces the relays needed for allocation of radio frequency and the measuring transformers for power measurement and PE electrode
11. Power diagram TUR 400 350 300 250 200 gt 1 150 TUR z TUR 2 100 TUR 3 50 TUR 4 TUR 5 0 100 150 200 400 600 1000 2000 Resistance in Ohm Power diagram Pulse E 5 a e Pulse 1 8 Pulse 2 Pulse 3 Pulse 4 100 150 200 400 600 1000 2000 Pulse 5 Resistance in Ohm not valid for A 3000 2000 76 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 56 Service Manual Arco and RF units Power diagram TUR Pulse e TUR Pulse 1 TUR Pulse 2 TUR Pulse 3 TUR Pulse 4 TUR Pulse 5 Power in Watt 100 150 200 400 600 1000 2000 Resistance in Ohm 7 not valid for A 3000 2000 77 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 56 Service Manual Arco and RF units Power diagram Spray Coagulation 120 5 Spray 1 2 Spray 2 _ Spray 3 Spray 4 Spray 5 0 100 200 300 400 500 1000 2000 Resistance in Ohm Power diagram Force Coagulation Effect 1 140 Force 1 Eff 1 o wc 4 _ Force 2 Eff 1 100 ee Force 3 Eff 1 Force 4 Eff 1 Ko pee VER 2 Force 5
12. nnn nnne nn nannte natn 52 11 3 1 General description of gas control board 52 11 3 2 Description of gas control board sss enne nnne nennen nes 52 Block diagram gas control board fig 11 2 53 12 Service and adjustment procedures eene 54 12 1 Description of LEDs and adjustment potentiometers 54 Arrangement of LEDs and potentiometers 56 Arrangement of LEDs and potentiometers ll 57 12 2 Error indication at system start seen nennen nnn nnns 58 not valid for A 3000 2000 5 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 12 3 Configuration of important bus cables and 58 12 4 Service Oe TE 60 12 4 1 Preparation of service mode 60 12 4 2 Switching to service mode 60 12 4 3 Selecting service functions nennen nnns nennen nes 61 12 4 4 Description of service functions 62 12 4 5 Performing service adjustments 1 sentent enne 62 12 4 5 1 Checking and adjusting basic settings of gas system Service function 0 62 12 4 5 2 RF output signal delay Argon coa
13. not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 5 Description of high power supply 5 1 General description Purpose of the high power supply is the feeding of the power modules It delivers three voltages two of these are fixed voltages 15v and 15v and one is a variable voltage of 0 80 controlled by the CPU with a resolution of 6 bit via the equipment bus In order to produce only little heat the high power supply is designed as a switching regulator Furthermore this board contains the following components Analogue signal output of momentary current and voltage values in order to detect overload respectively an output power error at the patient Short circuit overload protection of the switching regulator 5 2 High power supply design and function The module is supplied with 2 x 18v and 1 x 15v from the mains transformer via a 6 pole plug These voltages are rectified filtered and stabilized to 15v and 12v by means of fixed voltage regulators and supply the internal circuits The voltages 15v and 15v are led out for supplying the Cut and Coagulator module Via another plug smoothed but unregulated 130v are fed to the MOS switch By varying the duty cycle the MOS switch together with its storage choke and freerun diode delivers the desired output voltage The regulation is done by comparing the actual voltage to the nominal voltage The nominal voltage comes from the processor i
14. 1 5 Da 100 150 200 400 600 1000 2000 Resistance in Ohm Leistungskurve power diagram not valid for A 3000 2000 E 78 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 56 Service Manual Arco and RF units Power diagram Force Coagulation Effect Hi 100 00 da re m Force 1 Eff 1 T lt E Force 2 Eff 1 SWR EEE _ Force 3 Eff 1 E ee ee Force 4 1 Force 5 Eff 1 Power in Watt 100 200 300 400 500 1000 2000 Resistance Ohm Power diagram Force Coagulation Effect 5 140 Power in Watt 0 Force 1 1 Force 2 1 0 1 Force 3 Eff 1 100 150 200 400 600 1000 Force 4 Eff 1 Resistance in Ohm _ Force 5 Eff 1 DL 19 not valid for 1000 25 08 2004 56 Service Manual Arco and RF units Power diagram Force Coagulation Effect 9 140 Force 1 1 8 Force 2 Eff 1 Force 3 Eff 1 gt Force 4 Eff 1 Force 5 Eff 1 Power Watt 100 150 200 400 600 1000 2000 Resistance in Ohm Power diagram Soft Coagulation E RE amp e Soft 1 Soft 2 Soft 3 So
15. Power diagram Blend E 75 Power diagram TUR t a ees 76 Power diagram Pulse eese terere tette tht tt tete tese ananas ananas 76 Power diagram TUR Pulse eese tereti tette tnter sn sns n ananas ananin 77 Power diagram Spray Coagulation ccce eene 78 Power diagram Force Coagulation Effect 1 eese 78 Power diagram Force Coagulation Effect Hi 79 Power diagram Force Coagulation Effect 5 79 Power diagram Force Coagulation Effect 9 80 Power diagram 80 Power diagram Argon 1 6 81 not valid for A 3000 2000 6 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Power diagram Argon 2 4 81 Power diagram Argon 82 Power diagram Bipolar 83 Power diagram Bipolar Coagulation sssseesesereseresereseseseseeeeeeneeenees 83 13 1 Visual and acoustic
16. Test resistor K Ss EE Handpiece recognition Output unit assignment relays PE monitoring Bipo recognition El output module E S Is KZ ge 5 5 3 amp 5 A 8 a S loudspeaker 2 E z D EE S en Be EI m SS 5 se 5 5 s E Dn D S mains board pe low power supply _ S mains relays E Screening x 7 not valid for 3000 2000 18 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 mains switch Patient electrode socket Monopolar socket Bipolar socket 25 08 2004 56 Block diagram of units mains board control display unit Service Manual Arco and RF units Frontpanel nn MG_PM we 3 J1 J1 8 Ji 3 J1 UI 4 J1 UI valves 6 J1 J2 2 J3 e J2 2 225 control 4 Ey Gassensor 2 gt 5 88 4 Poti E 5 AE J4 7 11 i CPU J5 S S a 2 HS Se mepa BN J6 22553 Ore Handpiecebus amp footswitch 8 J14 713 178779 ES 07 Handpiece recognition E HSE 116 3 5 8 2 E 3 08 RF Out Module PE J4 gt PE g
17. The following gas flow values must be achieved Sub function 1 1 5 to 2 0 l min Sub function 2 4 0 to 5 l min Sub function 3 9 0 to 11 0 l min In case of deviations the reduction valves 1 to 3 of the gas system must be readjusted and the gas flow has to be rechecked 12 4 5 2 RF output signal delay Argon coagulation from SM 4 3 gas flow adjustment Service function 4 The time from start of gas flow to the start of the RF generator is adjusted Select service function 4 1 set 32Hex Select service function 4 2 set 30Hex Select service function 4 3 adjust Cut gas value to 0 2 s e g 563 12 4 5 3 Start delay bipolar Resonance frequency bipolar recognition Service function 6 Select service function 6 with sub function 1 Adjust display parameter to 14Hex 0 2 sec One digit equals 10 msec Select service function 6 with sub function 2 and press CUT 3 The actual resonance frequency is stored not valid for A 3000 2000 62 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 12 4 5 4 Adjustment of gas flow Service functions 3 7 8 9 10 With this service function the gas flow for different types of handpieces and probes is adjusted For this purpose the service function corresponding to the handpiece or probe has to be selected and the gas flows Sub functions 1 to 5 have to be checked or adjusted according to
18. contact check By means of another relay the RF current can be switched to a measuring resistor for checking of the cut and coagulator module This allows testing of the RF modules and the RF power measurement by the self test after switching on the equipment The second board B contains the I C interfaces for relay control and the necessary analog multipliers and DACs for power measurement etc In order to check these analog interfaces they can be tested mutually with different reference voltages The design of the patient circuits complies with the CF standard PE electrode potential free i e without capacitive grounding 7 2 Description of board HFO_A The board HFO_A is the main board of the module It contains all allocation relays for modules handpieces and the power test resistor Furthermore it contains the two output transformers bipolar and monopolar and the measuring transformers for power measurement and PE electrode check The board gets the RF signals from the cut respectively Coagulator module and transfers the RF alternatively to the two monopolar outputs or the bipolar output For testing the output power measurement and the RF modules the output signal of the modules can be switched to a test resistor The power supply 15V for the relays and the piggy back board is made via this board 7 2 1 Design function of board HFO_A The radio frequency from the cut or coag module enters the board via socket J1 R
19. 5 Signal Power Fail Emitter and collector of an optocoupler Optocoupler switched if Power Fail 1 for 0 5 seconds after switching on for the time of power failure 0 5 seconds after power failure Power failure at least 20 msec outside 20 of nominal mains voltage Signal Signal with 1 10 of output voltage for monitoring of equipment output power error Signal Signal proportional to actual output current with 1a v for monitoring of output current Miscellaneous Protection Switching regulator electronically protected by shutdown after short circuit Restart after 5 seconds Fixed voltages by solid state fuses Efficiency 2 90 Accuracy Output voltage switching regulator 1v over the entire load and adjustment range not valid for A 3000 2000 31 E not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 Service Manual Arco and RF units snq juauidmb q Vi I0SS320Jq CO Juan 0 WNAS SON 49A 0d sure gt D 5 en nung 2 D E mong 2 mong E 5 JS x D SuLIO IUOJA joxyu09 5 Zenn um AZT q 8 as 4 ASI
20. Manual Arco and RF units Signal shapes 1 5 Continuous sine wave Blend 1 5 Pulsed sine wave duty cycle 80 TUR 1 5 Continuous sine wave Pulse 1 5 Continuous sine wave pulsed Soft 1 5 Continuous sine wave 1 5 Pulsed sine wave duty cycle 25 Spray 1 5 similar to spikes also for Argon coag Bipolar 1 130 Continuous sine wave Bipolar Coag 1 100 Continuous sine wave Auto stop times Auto 1 0 sec for monopolar and bipolar coagulation Auto 0 5 sec for Argon coagulation Technical gas data Gas pressure 8 bar at equipment input Gas flow rates in l min default MFS VICS ICS Probe adaptor 2 5mm probe 1 6mm ENT Coag open surgery amp Argo Troc probe nus 0 5 l min 2 0 l min 0 5 l min Gas shortage indication for 4 5 bar at gas connection Gas blocking Gas pressure and flow check at equipment output Error codes Error codes are principally displayed on the leftmost 7 segment display The indication is split up into the function group e g 1 and the function e g 2 divided by a decimal point E Offset error measuring amplifier RF output module Power supply voltage too high or too low Handpiece recognition defective atient electrode recognition defective Relay defective RF output module ut module defective wrong power 13 1 13 5 oag module defective wrong power not valid for A 3000 2000 5 71 x not valid for MBC600 not val
21. Observe load resistors Generally the function is correct if the RF power does not deviate more than 20 from the nominal value 14 3 5 Check of power monitoring The equipment switches off if due to faults the delivered power exceeds the selected value by more than 25 For this purpose a measuring device is built in which checks the actual output power In service mode 14 this power is indicated and can be compared with the measured power RF meter by the following procedure Switch equipment to service mode 14 Measure power for Cut step 2 5 and Spray Argon step 2 5 load 200 compare it to indication The maximum difference is 10 Leave service mode after finishing test 14 3 6 Measurement of leakage current Set HF power meter to position active electrode and PE leakage current check Leakage current measurement is done in CF mode Within the load range 100 Ohm to 500 Ohm the leakage current for all operational modes must be less than 150 mA not valid for A 3000 2000 86 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 14 3 7 Measurement of gas flow For these measurements a gas flow meter is required e g gas flow meter from Brooks or an electronic gas flow meter calibrated for Argon at normal pressure Connect gas nozzle of gas handpieces and probes to the flow meter Select Argon step 1 5 for values see tab
22. The corresponding circuit diagrams can be found in the annex 2 Primary power supply The primary power supply consists of Mains adapter with fuse holder and filter Mains power switch Inrush current limiter and voltage selector on mains board Mains transformer 2 1 Description of power supply board The following units are placed on the power supply board A Voltage selector 115 230 V Inrush current limiter B Smoothing and disconnecting switch 15V and 5V source with voltage monitoring D Microprocessor and voltage monitoring A Voltage selector 115 230 V and Inrush current limiter Voltage selector The voltage selector is a switch for the serial or parallel connection of two 115V primary windings of the mains transformer Inrush current limiter When the equipment is switched on the mains current first flows through a current limiting resistor After the delay time has passed the resistor is short circuited by a relay If the relay fails the two thermal fuses connected in series to the resistor melt and disconnect the primary circuit B Smoothing and disconnecting switch The rectified voltage approx 150VDC is smoothed by 4 electrolytic capacitors These feed the high power supply via a fast blow 6 3A fuse and a disconnect switch MOS transistor which is optically isolated controlled by the watchdog and low voltage monitor circuit The disconnect switch only closes if the microprocessor monit
23. a parasitic suppresser filter Via the mains switch the power goes to the mains board This contains a voltage selector and an inrush current limiter a resistor which is short circuited after approximately 1 second The mains voltage goes to the primary winding of the transformer It feeds the low voltage power supply and via a separate rectifier bridge and smoothing capacitors the high power supply These two units are also placed on the mains board together with a low voltage power supply The power supply of the other modules is provided by two different power supplies The low voltage power supply on mains board feeds front panel microprocessor handpiece recognition and RF output module The high power part consisting of coagulator and cut module is fed by the high power supply The power modules deliver RF signals to the RF output module Here the RF signal first passes through a power measuring device is then converted to the necessary output voltage by means of an output transformer and is finally switched to the desired handpiece by the allocation relay Furthermore the RF output module contains checking circuits for the PE contact check tissue contact detection for the bipolar output The handpiece recognition HSE delivers information regarding type of connected handpiece respectively its switch functions to the CPU via the handpiece bus The sensing of footswitches is also performed by this module The CPU bo
24. by pressing the Cut 3 key This is confirmed by a confirmation tone The parameters are displayed in hexadecimal not valid for A 3000 2000 61 E not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 12 4 4 Description of service functions List of service functions Service Sub Description Remarks mode function Indication asic settings check of gas system Disp Software version Loudness of operational signal Autostop times bipolar monopolar gas pl ij Gas flow ICS and handpieces a RF output delay Argon coagulation default value 5 Adjustment of PE recognition bipolar recognition Gas flow for 1 6mm probe Gas flow MFS handpiece Adjustment resonant frequencies cut module Power supply Volt 30V 1 3 14 5 4 Display power supply voltage 1 power hexadecimal value supply current 2 Offset power test 15 3 4 for adjustment amplifier part a 3 Offset power test of HFO_B2 board amplifier part b 4 Ooo y Gas flow for VICS handpieces ee Gas flow for 2 5mm probe and MICS El handpieces ______________ Bez en Bipolar start delay time min frequency 12 4 5 Performing service adjustments 12 4 5 1 Checking and adjusting basic settings of gas system Service function 0 Operate system with ICS handpiece gas bottle must be connected Select service function 0 Software version is displayed
25. green 15 to 60 Ohm PE transfer resistance good Indication green 75 to 95 Ohm PE transfer resistance bad Indication yellow more than 120 Ohm transfer resistance insufficient red alarm For the transition of states only the transition between two states is of interest For adjustments the given adjustment resistors are connected and their value is transferred as a setup value by pressing CUT3 respectively GAS3 Arco 1000 Sub function Parameter adjustment Adjustment resistor Transition short circuit good EEE Transition good bad Transition bad open __4 __ _ Lower impedance limit bipolar 5 tipper impedance limit polen The adjustment of bipolar recognition is done with a resistor of 1500 in 5 4 and 1kQ in 5 5 connected to the bipolar socket The value is stored according to 5 1 5 3 with CUT3 GAS3 12 4 5 6 Auto stop times Service function 2 With this function the recommended auto stop times are set One digit equals 10 msec the indication is in hexadecimal The following values are set Sub function Arco types MBC types 32Hex Argon 64Hex Handpiece 1 64 Hex Coag 64Hex Handpiece 2 64Hex Bipolar 64Hex Bipolar Remarks 32Hex 0 5 sec 64Hex 1 sec If auto stop times are too long they may be slightly reduced 12 4 5 7 Service adjustments of Cut module Service functions 11 and 12 With these service functions the resonance frequencies for monopolar and bipolar operations can be ad
26. necessary components for relay control RF power measurement loop impedance measurement PE electrode monopolar bipolar function test bus interface 7 3 1 Design function of board HFO_B The board contains the following units Digital interfaces I C bus IC1 and 2 IC1 controls the relays on the main board Signals REL1 to REL8 IC2 delivers the release signal for the relays and the control of the multiplexer for testing the ADC and the test device for PE contact recognition and tissue contact recognition monopolar and bipolar impedance measurements Analog to digital converter IC3 for power measurement PE contact recognition and amplitude of test oscillator Test device for checking all DAC s also those of CPU and handpiece recognition board HSE Multiplexer IC4 and 105 Test oscillator with driver stage U1 U5 T5 and T6 Reference processing U2a Monoploar bipolar contact recognition U7 IC5d and e PE contact recognition U6 U8c and e with testing device Power measurement multiplier U11 U12 measuring amplifier U10 and low pass U2 not valid for A 3000 2000 39 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Block diagram RF Output Board A gt gt Bipolar Handpiece 1 PE electrode 24 9 IUISUEI Js3L dd relay 5 e oy usue r aejodig
27. 0 18 Block diagram 8 an a ak ganan RR aaa 19 Block diagram primary current supply of the units 20 Description of Unlls usuuuuuu000 0000000 ases tci caia dra oa nn FEE E Era 21 2 PFIMary POWER SUPPIV nn EDI MOS ange 21 2 1 Description of power supply board 21 Block diagram mains board 1 2 esee eene nennen 23 Block diagram mains 2 2 aisi anne 24 3 Description of microcontroller unit board CPU 25 3 1 General description 25 3 2 CONNECTION to other units an cece Dre n ase rea aD cocoa sede Dens 25 3 2 1 Connection to 25 3 2 2 Connection to handpiece recognition 25 3 2 3 Connection to high power suppl 25 3 24 Connection to CUT IODINE T etes cede tert tar pta elle rate bors linea dn 25 3 2 5 Connection to Coagg module sss eene tenen nennen nnne nennen 25 3 2 6 Connection to relay board sse eene nennen nennen nnne enne nnns 25 3 2 7 Connection to the mains relay board sse nennen nennen 26 Block diagram CPU EE ert boris 27 4 Description of front panel
28. 00 kHz is assured and a flow of not permissible low frequency components through the patient is prevented In order not to dissipate the complete stored energy in the choke or the damping resistor in case of idling a back transfer of energy into the power supply is made by means of a free run diode A rectifier clamp circuit charges the capacitors to the peak value of the voltage at the storage choke If the required peak voltage is exceeded the pulse length of the pulse width modulator is reduced by voltage regulators until the output voltage reaches the desired value By switching the clamp circuit by means of a switching transistor two different pulse voltages Ignition pulses and standard pulses can be generated When the output is loaded the pulse voltage drops and the pulse width increases to a maximum value This maximum value corresponds to the pulse energy which is transferred to the tissue under load conditions tissue contact respectively spark over Together with the pulse frequency also programmed by the micro computer the output power is defined The spark over recognition checks after an ignition pulse whether energy is back transferred via the free run diode to the power supply If no energy is transferred back a spark over is recognized This is notified to the micro controller With activated frequency automatic only then the pulse frequency is increased to the value given by the micro controller in order to reduce the leakage c
29. 2004 S ring Service Manual Arco and RF units 3 2 7 Connection to the mains relay board The control board is connected to the CPU by a parallel data line It transfers the control signal for the gas system The CPU gets the information tube obstructed and gas shortage via this connection The gas values are delivered by the gas control board 7 not valid for A 3000 2000 26 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Block diagram CPU board gt Loudspeaker Mains power relay board Stat Bus Opto coupler RAM D Sound generator EPROM 9 e gt EEPROM gt a Analoqueport Data bus Address decoder Address bus gt gt Equipment Bus I O1 gt Handpiece e gt Recognition Reset eset VO2 gt Ic logic gt gt Seriell not valid for 3000 2000 27 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 4 Description of front panel 4 1 General description The front panel contains the push buttons and switches necessary to operate the equipment and displays the actually selected values Furthermore relevant information regarding safety and function is displayed The
30. B 50W 2 100 25 50 100 200 500 Resistance in Ohm en We 83 3 not valid for MBC600 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 13 1 Visual and acoustical signals Activation RFon Visual signal Acoustical signal Poweron j Greenswitchlight N ion EEE PE failure Output power error Red blinking signal Modulated warning tone 370 Hz Red signal EES Red signal FE The level of the acoustical signal is adjustable between 45 and 65 dB A The level of the warning tone Patient electrode failure is fixed at 65 dB A Classification Safety class 1 Safety grade according to EN60601 1 CF Weight without trolley Arco RF 24kg 19kg Dimensions Arco RF WxHxD 430mm x 150mm x 560mm 430 x 150 x 430 Applicable standards EN60601 1 EN60601 2 2 VDE0750 0107 not valid for A 3000 2000 84 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 14 Technical checks regarding safety TSC The safety concept comprises patient protection Patient electrode contact recognition Check of pre selected parameters output power error Automatic self test on start of equipment Technical checks regarding safety Furthermore the Cut module and the Coag module are short term short circuit proof The high power supply is equipped with an over current disconne
31. ICA horizontal below 6 J1 FC bus contin other panel boards 8 pole MICA vertical beside J7 J5 microprocessor Power supply board 8 pole MICA horizontal beside 6 monitoring 12 4 Service mode The service mode is used for adjustment of the equipment and for obtaining information out of it Furthermore the equipment can even be started if the self test fails In this mode the safety functions self test are disabled and an application of the equipment at the patient is not allowed 12 4 1 Preparation of service mode ARCO 1000 Press button Argon step 1 switch on equipment and wait until display lights up other types Press Cut step 1 switch on equipment and wait until display lights up The equipment starts without performing the self test All functions are available as usual 12 4 2 Switching to service mode The service mode must be prepared see above Arco 1000 Press button Argon step 1 and button Purge simultaneously other types Press Cut step 1 and Coagulation step 1 simultaneously Repetition brings the equipment back into working mode An application at the patient is only allowed after a restart Switching the equipment off and on not valid for A 3000 2000 60 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 12 4 3 Selecting service functions It is possible to select a main function with included sub f
32. Measuring channel 180 defective determine offset of 180 11 2 Limits min O max 5 Measuring channel U80 defective determine offset of PWR RF output voltage CPU ADC Limits min 1 83 Measuring channel PWR L defective determine offset of PWR L RF output power Low 11 5 Limits min 6 max 57 Measuring channel PWR_H defective determine offset of PWR RF output power High 1 6 Limits O max 9 Measuring channel HE VOLT defective determine offset of HE VOLT RF output voltage not valid for A 3000 2000 2 73 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 2 Power selection 1 Cut module defective 12 2 Limits min 60 max 80 2 3 Limits 110 max 150 Power selection 3 Cut module defective 12 4 Limits min 160 max 220 Power selection 4 Cut module defective 12 5 Limits min 220 max 280 Power selection 5 Cut module defective 12 6 Limits 20 max 47 Test current limiting Cut module defective 12 7 Limits min 120 max 190 Test current limiting Cut module defective Check of coag module output power at test resistor 13 1 Limits 15 max 25 Power selection 1 Coag module defective Power selection 2 Coag module defective Power selection 3 Coag module defective Power selection 4 Coag module defective 13 5 Limits min 100 max 140 Power selectio
33. R_L RF output power Low I C ADC Limits 6 max 57 Offset determination PWR_H RF output power High I C ADC 4 5 Limits 0 9 Offset determination HE VOLT RF output voltage 6 Testpowersupply watchdog Limits min 0 max 1 Trigger power supply watchdog output voltage 0 Volt 6 1 Trigger power supply watchdog low output voltage Limits min max 1 power supply watchdog defective Do not trigger power supply watchdog same voltage selection as 6 2 measured 0V 7 7 1 Limits min 0 max 1 Trigger power supply watchdog 0 Volt 7 2 Limits 0 4 Bit 0 power supply voltage outside of limits Limits 3 max 7 Bit 1 power supply voltage outside of limits power supply defective 1 1 1 1 2 1 3 4 2 2 1 mf ol ol Al Gol not valid for A 3000 2000 72 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Limits 9 max 13 Bit 2 power supply voltage outside of limits power supply defective Limits 20 max 24 Bit 3 power supply voltage outside of limits power supply defective Limits 43 max 49 Bit 4 power supply voltage outside of limits power supply defective Limits min 88 max 99 Bit 5 power supply voltage outside of limits power supply defective Limits 170 195 Trigger power supply watchdog m
34. SERVICE MANUAL Sicherheit Safely Ka BO 1010 Sicherheit Safety fi BIPO Cut Ue go 100 Sicherheit afeh S ring Made in Germany 25 08 2004 S ring Service Manual Arco and RF units S ring GmbH Medizintechnik Justus von Liebig Ring 2 25451 Quickborn Tel 49 0 4106 6100 0 Fax 49 0 4106 6100 10 E mail info soering com SM 3000 03 003 R8a not valid for A 3000 2000 9 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Contents Page 1 a 10 1 1 General description of the Arco units MBC units eese 10 1 2 Co operation of Unts ie eaa ae aaea aaao aa a Kee aaa aa aa eaaa eaaa aaaea 12 Arrangement of modules Of the 3000 13 Arrangement of modules of the 2000 14 Arrangement of modules of the 1000 15 Arrangement of modules of the Arco 1000 16 Arrangement of modules of the MBC 601 17 Arrangement of modules of the 60
35. Select power step Spray 1 or Argon 1 resp 20W Start equipment and adjust potentiometer P2 so that LED D29 just lights up Then turn P2 one full turn counter clockwise Frequency check Measurement by frequency measurement device between source and gate of transistor T8 The following values have to be measured Spray 1 20W 14 0 5 2 Spray 5 120W 70 5kHz These frequencies are adjusted on the synchro board P2 70 kHz and P1 14 kHz For types without a synchro board the tolerances are larger because no adjustment is possible The tolerances are 16 2kHz 80 8kHz Adjustment of arc detector sensitivity Idle mode Select power step Spray 1 or Argon 1 20W Operate handpiece without load Turn potentiometer P3 fully clockwise Wit running equipment turn P3 counterclocwise until LED D10 extinguishes Turn P3 three full turns more counterclockwise Test With activation of Coag handpiece or foot switch LED D10 lights up shortly and must extinguish immediately This must also be the case when synchro signals are applied to the synchro board If in this case D10 periodically blinks P3 on the synchro board must be turned clockwise until D10 extinguishes Then turn this potentiometer one more turn clockwise Regarding position of potentiometers and LED s see Position of LED s and Poten tiometers Il 12 5 3 Adjustment of cut module Necessary equipment S RF power meter load resistors 100 200 amp 3000 measuring
36. age until LED 031 cut module just starts to light up The required output voltage must be in the range 2 to 5Vss Press Cut switch with this adjustment 12 5 4 Adjustment of RF Out B2 SMD from SW 3 10 Necessary equipment RF Handpiece with two fingerswitches Patient electrode Adjustment of Offset Voltage z start unit in Service Mode choose Service function 15 sub function 3 2 Monopolar and Patient electrode have already to plugged in Unit has to be switched on for at least 10 minutes already start unit periodically with handpiece button CUT yellow or Coag blue Only this way the offset value will be displayed in the Coag field correctly adjust with poentiometer P1 on HFO B2 piggyback a value of 25 30 Leave Service Mode and start unit again not valid for A 3000 2000 68 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 13 Technical data 0 W frequency Vor KHz 1160 3 Cut 4 e10W 2000 Lann 250W __ 350 oa Cut 5 320w 2000 190W 320 1320 Blend 1 curs cuts 350 Blend ___ jw 60W e 830 Blend 4 180W 200Q 110W 210W 350 1280 Output voltages are no load values not valid for 3000 2000 69 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF uni
37. age to the J2 and J3 not valid for A 3000 2000 48 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 Service Manual Arco and RF units S ring Block diagram Interfaceboard 25 08 2004 Jo dnoo 4 IOPIPS dn GND AS pue Ge sng pun 01dQ lt 4 a v a J9 12AU02 v d 3 not valid for MBC600 not valid for Arco 1000 49 not valid for A 3000 2000 not valid for Arco 2000 25 08 2004 S ring Service Manual Arco and RF units 11 Description of gas system 11 1 External gas system The pressure regulator of the gas bottle 2 step pressure reducer reduces the bottle pressure to the equipment input pressure of 8 bar In order to make connections of regulator to gas bottle and from regulator to equipment easy all connections are equipped with a quick lock system It is only necessary to tighten the regulator by hand After opening the gas bottle the regulator is tightly locked to the outlet valve of the gas bottle Additionally the regulator is equipped with a bleed valve to let out the rest pressure after closing the bottle valve This allows an easy removal of the regulator from the bottle Exchange of gas bottle The hose connection between regulator and equ
38. al description The coagulator module provides the necessary high RF voltage for spray coagulation For changing the output power the pulse repetition frequency as well as the pulse energy is variable In order to reduce disturbances of OP equipment especially endoscope cameras not every output pulse is generated with an ignition energy necessary for spray coagulation In order to reduce disturbing noise at low pulse frequencies the ignition pulses are transmitted irregularly An automatic spark detection enables the microprocessor to adjust the output parameters in such a way that the RF leakage current is sufficiently low for all cases A safety device informs the microprocessor about possible overheating of the output transformer The module is designed for CF operation 8 2 Function of coagulator module Fig 9 1 shows the schematic concept of the coagulator module It receives all the control information from the micro controller via the interface board see description interface board Status information is transferred backwards via this board Essentially the board contains a programmable oscillator a pulse width modulator a MOS switch and a storage inductance The longer the on time of the MOS switch the more energy is stored in the storage choke and the higher is the obtained voltage after switching off the transistors By means of the output capacitors at the output transformer on the RF output board a resonant frequency of more than 3
39. al signals unesnssnnnenneennnnnnennnnnnnnnnnnnnnnennnnnn nennen nennen nnne nnne nnne nns 84 14 Technical checks regarding safety 85 14 1 Tu UE 85 14 2 EXTON EENS 85 14 3 Description of special checks 85 14 3 1 Check of controls and indicators eienn ana ana auaa 85 14 3 2 Check of handpieces and foot 86 14 3 3 Check of RF generators and 1 86 14 3 4 Power meagsurement nn 86 14 3 Measurement of gas flow Sn ee Eed 87 14 3 9 Check of handpiece 87 BINION e E 88 Microprocessor Modul CPU Fehler Textmarke nicht definiert layout EI Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert circuit plans 2 10 TEE Fehler Textmarke nicht definiert circuit plans 3 10 TEE Fehler Textmarke nicht definiert circuit plans 4 10 TEE Fehler Textmarke nicht definiert circuit plans 5 10 TEE Fehler Textmarke nicht definiert circuit plans 6 10 TEE Fehler Textmarke nicht definiert circuit plans 7 10 caen Fehler Tex
40. and bipolar is as follows a If monopolar handpieces with fingerswitches are used an activation of the bipolar functions Cutting and Coagulation is possible by means of a double footswitch Both function fields are thereby useable In this case both indicator fields are active b If monopolar handpieces without fingerswitches are used only one of the function fields can be activated The use of both functions with one footswitch is possible but in order to switch from one function to the other a manual selection at the equipment is necessary For more detailed description of the control and indicator elements see instruction manual The Arco respectively MBC units were only meant for the use in general surgery and gastroentorology Operations on the heart eyes and in the brain neuro surgery are not admissible This equipment has not been developed for continual operation constant power supply for a longer period The period for use fulfills the minimum demands for operation of the EN60601 2 2 10s load 30s break Before starting operation the supplies of the appropriate handpieces must always be checked for external damages Only accessories from the S ring Accessories Order List are allowed to be applied to the unit We take no liability for accessories of other manufacturers not valid for A 3000 2000 0 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Servic
41. ard microprocessor controls the complete sequence of the equipment It gets information about the desired mode from the front panel modules via an C bus The power modules high power supply cut and coagulator module are controlled by a parallel module control bus The check of actual voltage of the high power supply as well as the status of the power modules is done via the module status bus which connects the power modules with the RF output This information is transferred from the RF output module to the CPU via the status bus The relay control check of delivered output power status of PE electrode and tissue contact recognition on RF output module is done via the In order to protect the software functions the CPU board is connected to a microprocessor watchdog and a voltage monitor on the power supply board The control of argon gas flow supplied to the handpiece is performed by the gas control board located at the CPU board Gas control is carried out by the CPU via the not valid for A 3000 2000 12 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Arrangement of modules of the Arco 3000 5 2 lt d S P Ex Ss 5 2 25 2 5 i Gi 29 S 2 NEN
42. aximum value 100V power supply defective Limits 0 max 1 Trigger power supply watchdog back to Test of 8 8 1 Limit 10 Test channel 1 result must be 0 HSE defective 8 2 Limit 10 Test channel 2 result must be 10 HSE defective 9 Resonance frequency serial resonant circuit RF out test of PE channel 9 1 Limits 80 max 200 Search for frequency minimum gives information about patient safety capacitor 9 Limits 0 max 32 Test PE recognition PE recognition defective 9 3 Limits 176 max 255 E Test PE recognition PE recognition defective 4 Limits 176 255 Test PE recognition PE recognition defective 10 0 1 1 0 min 2 176 max 1 48 max 2 255 Relay test 3 switching changes Relay 3 defective min 1 176 min 2 0 max 1 255 max 2 48 Relay test 5 switching changes Relay 5 defective 10 3 1 176 min 2 0 max 1 255 max 2 48 Relay test 6 switching changes Relay 6 defective 10 4 1 176 2 0 1 255 2 48 Relay test 7 switching changes Relay 7 defective 10 5 1 176 2 0 max 1 255 max 2 48 Relay test 8 switching changes Relay 8 defective 10 6 min 1 0 min 2 145 max 1 10 max 2 172 Relay test 4 switching changes Relay 4 defective Determination of offset values in measurement channels with high precision Repetition of offset determination 11 1 Limits min O max 5
43. by the control signal DOWN This signal is routed to the high power supply via the interface board The current value 1 VAL acquired by the operational amplifiers Ula and U1b is compared by the operational amplifier U1c with half the value of SET Signal 1 SET 2 As long as VAL the actual current value is less than SET 2 Utc delivers approx 14V If VAL is larger than SET 2 the output voltage drops more and more The signal is passed via D49 and H440 to the DOWN output If the DOWN signal falls below a certain voltage 0 to 10 V the power supply voltage given by the micro controller is down regulated the RF output voltage falls and reduces the RF output current to the maximum value given by SET Current limiting is indicated by LED D50 In pulse mode the analog switch IC4 disconnects during the switch off phases of the final stage the actual value from the regulator and keeps the regulator output constant during the current pauses This prevent an up regulation of the HF output voltage during the current pauses hold function If the module is switched off the down regulation of the power supply is prevented by switching off the current reference IC4b not valid for A 3000 2000 34 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 6 7 Power limiting The power limiting circuit consists of the power measurement and the power regulation The
44. c occurs so that an arc would extinguish immediately thereby preventing unwanted cutting into the tissue With this function coagulation with a pure sine is possible The module consists of Final stage MOS bridge Output filter distortion suppresser Power detection broadband multiplier Effective current detection indirectly by the current through the final stage Arc detection detection of harmonics by the arc Control circuits for current power and arc regulation Spark suppression by immediate short timed disconnection of final stage sparks in connection with short circuits at the generator output are avoided Control logic for pulse generation etc Communication with microprocessor function modes parameters and returned values as well as with high power supply signal DOWN module status bus for down regulation of supply voltage is done by the interface board which is mounted on the cut module as an additional board 6 2 Final stage and output filter The final stage consists of the MOS power transistors T3 to T6 These four transistors are bridge connected From the driver transformer TR2 the transistors T3 T6 and T4 T7 are periodically switched on This results in a periodic switching of the supply voltage U_SUP U_SUP Thereby the output voltage is a rectangular signal with an amplitude proportional to the supply voltage With TR1 a transformer with air gap and defined inductance the capacitors C119
45. ce mode recognition must light up Connect bipolar connecting cable and bipolar tool according to instruction manual Bipolar mode recognition must light up If necessary press a key within the bipolar field and activate foot switch Acoustical signal for bipolar function must be present Bipolar mode recognition must light up not valid for A 3000 2000 85 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 14 3 2 Check of handpieces and foot switches Perfect condition of plug and cable Mechanical faults especially cracks in handpiece housing Function test of allhandpieces and foot switches 14 3 3 Check of RF generators and safety devices Function test of RF generators RF relays and leakage current detector The following equipment is needed Measuring device for RF surgery equipment for measurement of output power and RF leakage current e g BIO TEK RF 302 Handpieces Connecting cable patient electrode Cables and clamps Preparation Connect RF measuring device to the RF unit in accordance with instruction manual Connect active electrode via handpiece Establish connections to patient electrode equipment frame and earth according to specifications of measuring device manufacturer Checks of leakage current must be performed according to safety class 14 3 4 Power measurement Values for power output see table in chapter 8
46. ch foot switch with galvanic isolation and to transfer the corresponding signals to the CPU 9 1 Properties Supply 15V GNDA 5V GND Output signals PC bus A D converter 4 bit 4 step window discriminator Connections 1 coded tweezers 2 foot switches 2 coded handpieces or 1 coded handpiece equipment version 2 Equipment version 2 A coded handpiece for a different application can be recognized by additional wiring 9 2 Function An oscillator generates a narrow pulsed AC interrogation signal with a frequency of approx 22 kHz and approx 16Vss The following final stage amplifies this signal and feeds the primary of a transformer from the transformer array Transformers 1 to 7 Transformer 1 2 Handpiece 1 connector J1 resp J5 Transformer 3 4 Handpiece 2 connector J2 resp J5 Transformer 1 2 3 Recognition for other applications Transformer 5 Bipolar tweezers connector J3 Transformer 6 Foot switch 1 connector J8 and J9 Transformer 7 Foot switch 2 connector J8 and J9 For an interrogation the CPU switches by means of a decoder and a switch array the primary of a transformer from the transformer array to the final stage of the oscillator By the coding of the handpiece respectively by pressing the finger switch of a handpiece which is connected to the secondary of the selected transformer a characteristic recognition signal is generated at the primary This signal is rectified and fed to the level ada
47. ction and is permanently short circuit proof A check of power supply correct voltage of the switch on stage within the Cut and Coag module no current drain with applied supply voltage as well as a test of indicators is performed at every switch on of the equipment A watch dog prevents uncontrolled conditions in case the software fails 14 1 Intervals Safety technical checks have to be carried out annually 14 2 Extent Check for presence of equipment book and instruction manual Check for electrical safety according to DIN VDE 0751m part 1 1989 Check of protective conductor lt 0 3 2 Check of equipment leakage current case 0 5 ma 5 Patient leakage current monopolar application part lt 10uA Patient leakage current bipolar application part lt Check of controls and indicators Check of RF generators delivery of power Check of RF leakage current handpieces PE electrode Check of patient electrode monitoring Check of power monitoring Check of handpieces and foot switches for proper condition 14 3 Description of special checks 14 3 1 Check of controls and indicators Connect handpieces and patient electrode according to instruction manual Switch on equipment and check indicator lights Select a power step for cutting and coagulation and activate handpiece switch blue or yellow button respectively footswitch Acoustical signal for cutting and coagulation must be present Handpie
48. d D14 bipolar E D27 mains error D11 Spraymode D31 electric arc limiting D28 working pulse voltage reached D47 power limiting D29 ignition voltage reached D50 current limiting D56 overload not valid for A 3000 2000 56 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Arrangement of LEDs and potentiometers Open case is an Arco 3000 placement of the boards is different in other units placement of potentiometer is the same 021 024 D26 D2 024 5V CPU 025 15V D26 15V D27 CPU Reset D29 Softstartrelay D31 circuit breaker D25 D31 D29 D21 150V mains board 1 Idle LED D2 Seri LED 202 rada valve 1 below 0203 valve 2 above Offset power test amplifie P1 HF Out Handpiece recognition CPU gascontrol board Piggyback not valid for A 3000 2000 57 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 12 2 Error indication at system start On start of the system a self test is performed which checks various power supply parameters for correct function If an error is detected the error code is shown in the very left 7 segment display The indication is divid
49. e 2 n 3 5i 3 2 4 z 3 2a 08 Be E EI 2 __ 23 5 adc o a 5 5 E E Ka n mains board ez low power supply __ mains relays E Screening gt D og 5 not valid for A 3000 2000 16 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 mains switch Patient electrode socket Gas socket 25 08 2004 S ring Service Manual Arco and RF units Arrangement of modules of the 601 Test resistor 2 Q 58 LL 5 5 Handpiece recognition Output unit assignment relays PE monitoring Bipo recognition RF output module E Do 2 lt zz KZ E 5 8 E E 3 5 S a S loudspeaker 2 E Q 4 EE S en EI Pr SS 5 se 5 5 5 z S mains board low power supply js mains relays screening x m not valid for A 3000 2000 7 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 mains switch Patient electrode socket Monopolar socket1 Monopolar socket 2 Bipolar socket 25 08 2004 S ring Service Manual Arco and RF units Arrangement of modules of the 600
50. e Manual Arco and RF units Used symbols Patient electrode when RF applied Pt elec trode insulated against earth Defibrillator safe Attention see also covering documents Monopolar Cutting amp Coagulation e et out separation from main Argon Enhanced Coagulation on connection to mains Bipolar Cutting and Coagulation CE label acc to 93 42 EWG Attention high voltage v type CF XJ potential equation pin Double Footswitch 7 not valid for A 3000 2000 1 _ 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 1 2 Co operation of units The equipment contains the following units Electrical components Primary power supply unit transformer line filter power switch and parts of mains board mains board with low voltage power supply mains relays and voltage selector switch High power supply Cut module incl Interface Coagulator module incl Interface RF output module incl Handpiece allocation PE monitoring and bipolar recognition 2 Handpiece recognition Gas control Synchronization board Front panel modular design Micro controller CPU Mechanical components Gas system The wiring of the modules and their cooperation is shown on the following block diagram and the voltage supply plans Power is connected to the mains power socket which contains the mains fuses and
51. e Mascon 14 pole MICA 3 pole RIA 1 15V 2 GND 15V 6 pole RIA 123 GND Sens A 456 GND Sens B 2 pole RIA 6 pole RIA 1 2 prop Valve 3 4 valve 2 5 6 valve 1 Service Manual Arco and RF units left at module to the right between cooling body to outp mod RF right bottom right over J1 middle top left bottom middle left top left middle left bottom left top left top right equal val top middle pins from the front left to right top right beside J3 top right of J13 top right of J14 at the side left top right vertical top right right below J3 top left right of J6 top middle right bottom between J3 and J4 right of J2 left of J2 left 3 not valid for MBC600 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Power supply board 6 Mains switch 2 pole RIA top right atthe side 7 Transformer primary 4 pole RIA top right 1 2 3 4 primary wag Transformer second 5 pole RIA bottom left 1 2 18V 4 5 21V Rectifier 2 pole RIA top right 1 2 150V High power supply 4 pole RIA top left vertical 1 2 relay 3 4 150V J2 Power supply CPU front panel 8 pole RIA Handpiece board 1 2 GND 5V bottom right RF output module 3 4 15V GND 4 5 GND 15V 6 not connected 7 8 GND 5V J5 microprocessor Front panel 6 pole MICA right over J2 monitoring ore MG_PM1 not connected 14 pole MICA top horizontal C bus CPU 14 pole M
52. ed into the function group e g 1 and the function e g 2 divided by a decimal point The exact explanation of the error codes is given on pages 70 12 3 Configuration of important bus cables and connectors In the following table of pin configuration top refers to the opened bottom plate construction state of the equipment sighting is from the front panel For flat cables with mica plugs the brown wire with colored cables respectively the red wire with gray cables is pin 1 The counting of pins goes from top to bottom respectively from left to right Bus cable plug L eennects Di description Hemerks High power supply Plug J1 Transformer 18 18 16V vertical right Power supply board Feeding high power supply Soft start relay vertical right Supply bus High power supply Supply modules Coag module vertical right Cut module Mascon plug High power supply Control of power Module control bus Coag module 5 modules MSB Cut module left of Power supply CPU 7 right other modules 1 0V transmission current 2 voltage of power Module status bus High power supply Pin 3 supply Coag module Pin 4 OV Report of module Cut module Pin 5 DOWN status RF output module Pin 6 8 Status position as for MSB Coagulator module HF output module 1 RF left at module to right Plug J7 for RF output module 2 RF not valid for A 3000 2000 58 not valid for MBC600 not valid for Arco 2000 no
53. elay REL1 selects cutting or coagulation REL2 switches RF to an external resistor of 4 742 for testing of the power measurement The capacitors C1 to C4 simulate the patient safety capacitors This is necessary for the correct function of the RF modules with this test The insertion of the test resistor before the output transformers is advantageous because on the secondary side high voltage strength would be required For safety reasons the idle position of REL2 without voltage always switches the RF to the test resistor The relays REL3 and REL4 switch the RF to the monopolar respectively bipolar output In idle position these relays switch the output transformers to tissue impedance test signals MON TST and TST A circuit on the piggy back board HFO B can test the loop impedance between active and PE electrode The secondary of the bipolar transformer TR4 is connected to the tweezers via the two patient safety capacitors and socket J3 After the monopolar patient safety capacitors C5 and C6 the two handpiece allocation relays REL5 and REL6 are located These relays connect the output alternatively to one of the handpieces The relays are high voltage types In order to locate errors in handpiece allocation due to faulty relays burnt contacts wrong relay control driver or software the additional high voltage relays REL7 and HEL8 are provided By appropriate opening and closing of these relays with a simultaneous measurement of the loop
54. ent of synchro board connect frequency meter to source and gate of T8 on coagulator module T8 is the right big transistor on the board Leave the power meter connected and select 2000 load Select Argon step 1 start equipment and turn potentiometer P2 on synchro board for 14 0 5 kHz Select Argon step 5 and set power selector to 120W Start equipment and turn potentiometer on synchro board for 70 2 kHz synchro pulses 15 kHz 5usec 1V into BNC socket monitor signal not valid for A 3000 2000 66 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Turn potentiometer on synchro board and on coagulator board fully counterclockwise Select Spray or Argon step 1 and turn P3 synchro board clockwise until LED D10 on coagulator board extinguishes Turn P3 synchro board one more turn With this procedure the handpiece must not be connected to the power meter Remark Output power and ignition pulse energy see there might be adjusted first without synchro pulses Basic adjustment of output power without synchro pulses Connect RF meter handpiece patient electrode casing and ground load 2002 select power step Spray 5 or Argon 5 and 120W Start equipment and adjust potentiometer P1 for an output power of 120W at 2000 without monitor signal Adjustment of ignition pulse energy Disconnect handpiece from RF meter
55. es check for input pressure 3 proportional valve flow control 4 5 pressure transducers measurement of pressure difference 6 7 Magnetic valves for switching throttles ranges for regulation 8 9 Throttles flow resistances S 10 fine filter removes contaminations All components are mounted onto an aluminum block and interconnected 11 2 4 Technical data Gas flow 0 1 to 8 l min in three ranges Input pressure 6 to 10 bar Output pressure max 3 bar flow monitoring by pressure sensors precision 2096 from 0 1 to 8 l min precision depends on software used not valid for A 3000 2000 50 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Block diagram Gasunit fig 11 1 Sensor 2 Magnetic Magnetic valve 1 valve 2 Sensor 1 Propvalve Pressure switch A Pressure regulator EI S gt 1 Inpput not valid for 3000 2000 51 _ 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 11 3 Description of gas control board 11 3 1 General description of gas control board The gas control board serves for control of the proportional valve and the magnetic valves on the gas unit Furthermore the signals of both pressure transducers and the pressure switch are processed digitally converted a
56. for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Annex Layout and circuit plans of existing boards and modules can be obtained by trained personnel on request only not valid for A 3000 2000 88 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 03 003ns
57. front panel is composed of different panel modules Depending on type of equipment the number varies between 3 and 5 modules The indicators of the panel are controlled via the I C bus As an exception the LED s for Output power error and Function error are controlled via parallel data lines Keyboard scanning is also done via the l C bus The suppression of key bouncing is done by the CPU The panel gets its supply current alternatively from the CPU connection or froma connection to the low voltage supply 4 2 Connection to other units 4 2 1 Connection to CPU The front panel is connected to the CPU by the l C bus The initiative for a data transfer is exclusively taken by the CPU 4 2 2 Connection to low voltage supply In order to avoid unnecessary loading of the CPU connection by high currents the displays of the panel are fed from a separate power supply 5V Furthermore the connection of the CPU with the microprocessor monitoring of the power supply is carried out via the front panel module MA Master not valid for A 3000 2000 28 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Block diagram Frontpanel m vo en Q V gt 5 5 gt gt E Ge 5 Ge n gt Aq gt not valid for 3000 2000 29 not valid for MBC600 not valid for Arco 2000
58. ft 4 Soft 5 100 150 200 400 600 1000 2000 Resistance in Ohm 80 25 08 2004 56 Service Manual Arco and RF units Power diagram Argon 1 6 Coagulation 70 5 30 U MM MEE 2 20 e Argon 1 6 1 Argon 1 6 2 0 Argon 1 6 3 1 2 3 4 5 Argon 1 6 4 Resistance in Ohm 1 100 Argon 1 6 5 Power diagram Argon 2 4 Coagulation Power in Watt Argon 2 4 1 m Argon 2 4 2 74 Argon 2 4 3 Argon 2 4 4 Argon 2 4 5 1 2 3 4 5 Resistance in Ohm 1 100 not valid for A 3000 2000 81 _ 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 56 Service Manual Arco and RF units Power diagram Argon open Coagulation 120 100 NEN 80 Power in Watt BR a 5 Argon offen 1 0 Argon offen 2 Argon offen 3 Argon offen 4 Resistance in Ohm 1 100 K Argon offen 5 not valid for A 3000 2000 82 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 56 Service Manual Arco and RF units Power diagram Bipolar Cutting B 5 3 10W a 25W 50W 100W 130W 25 50 100 200 500 Resistance in Ohm Power diagram Bipolar Coagulation E 10W 8 25W
59. ge of the 45V source is less than 4 65 V the uc monitor IC MAX691A sends a reset signal to the CPU 15V source If the voltages exceed or fall below the limits 15V 10 or 15V 10 the unit sends a reset signal to the CPU The unit works with voltage comparators and reference voltages given by zener diodes D Microprocessor monitoring An external watchdog WD1 monitors the quartz frequency of the CPU At intervals of 200ms the CPU sends a trigger signal to WD1 If the interval exceeds 240ms or falls below 160ms the watchdog transmits a trigger signal to the CPU Simultaneously the disconnect switch interrupts the feeding of the power supply Furthermore the CPU is halted by a reset if the above mentioned voltage monitor is activated Power supply watchdog With the power supply watchdog the supply voltage of the high power supply disconnect switch can only be switched on if the CPU periodically sends a trigger pulse in 200ms intervals A reset signal of the CPU generally switches off the disconnect switch not valid for A 3000 2000 22 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 Service Manual Arco and RF units S ring 25 08 2004 board 1 2 lagram mains Block 1959 1 AST lt sur Suriojruour sureur SUI 0 5 D SurIojIu
60. gulation from SM 4 3 gas flow adjustment eene te LE NEE 62 12 4 5 3 Start delay bipolar Resonance frequency bipolar 62 12 4 5 4 Adjustment of gas flow Service functions 7 8 9 10 63 12 4 5 5 Adjustment of patient electrode recognition Service function 5 64 12 4 5 6 Auto stop times Service function 2 64 12 4 5 7 Service adjustments of Cut module Service functions 11 and 12 64 12 4 5 8 Calibration of cut module power Service function 13 65 12 4 5 9 Loudness adjustment Service function 1 65 12 4 5 10 Check of power measurement Service function 14 65 12 4 5 11 Indication power supply voltage and current Service function 15 65 12 5 Service adjustments of the modules uussusnsannnnannnnnnnnnnnannnnnnnnnannunnnnnnnnnnnnnannnnnannnnnn 66 12 5 1 Adjustment of high power supply sse entree nes 66 12 5 2 Adjustment of coagulator module seen enne 66 12 5 8 Adjustment of cut module sss eee entente nennen nnne enne 67 12 5 4 Adjustment of RF Out B2 SMD from SW 3 10 sse 68 13 TOCHIIG Al Calta NE E 69 Power diagram 75
61. gulation in steps 1 5 not valid for A 3000 2000 44 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 Service Manual Arco and RF units S ring y edsuoyrus zl 03002 S 4 jmoan opquimq 4S3 1eds 1023002 103293014 INO IdTM y edsuoprus J9ur10Jsue PUB 86 1035 994 5 50 uonoo es lt gt PBOLIIAO uoprus Uon ops 9ud nn 481 urojne Lundar g ae p repuejs amp 8 SMd TO AT 3 not valid for MBC600 not valid for Arco 1000 45 lt IMANA uonon nsur UUU pia 750 25 08 2004 Block diagram Coagulation module fig 8 1 A080 lt lt lt an ant K ddns not valid for A 3000 2000 not valid for Arco 2000 25 08 2004 S ring Service Manual Arco and RF units 9 Description of handpiece recognition Purpose of HSE04 is to recognize the different connected handpieces and bipolar tweezers to recognize activation of a push button finger swit
62. h off En 34 6 6 Current limiting current control unsnsssannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnn 34 6 7 Power limiting eh se na nannte 35 6 8 Arc re QulatiOn TE 35 6 9 Pulse generation and control logic enses 35 6 10 Signal SHAPES e 36 This signal shape is used for the function Cutting With Blend 36 Block diagram Cut module 37 7 Description of RF output enn 38 7 1 General deseri nentur Eeer 38 7 2 Description of board A SEENEN Een 38 7 2 1 Design function of board _ sessi enne nnn entree nene 38 7 3 Description of board HFO B 39 7 8 1 Design function of board 39 Block diagram RF Output Board A 40 not valid for A 3000 2000 4 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Block diagram RF Output board 41 8 Description of coagulator module ccce ener 42 8 1 General description 42 8 2 Function of coagulator
63. he necessary value the intensity of the arc rapidly increases and the tissue burns When operating from muscles to fatty tissue the arc can extinguish so that the electrode sticks The presence of an arc can be sensed by harmonics in the cutting current due to nonlinear effects The higher the harmonics content the stronger is the arc intensity If the arc intensity is too high the RF voltage has to be reduced and it has to be increased in case of a too small arc In this module the arc intensity is retrieved from the cut current signal RF_CURR The signal RF_CURR is passed through R136 to the operational amplifier U4 By means of a reactive current simulation which simulates and subtracts the stray capacitance of the handpiece cables and the inductive currents of the output transformers capacitors C132 C133 resistors R137 to R142 and relay for the different conditions under monopolar and bipolar applications the current signal C_SIG goes to 2 quadrant multiplier U8 for amplitude regulation After appropriate amplification U6b final stage T15 16 the amplitude is evaluated difference amplifier U3a D22 and 023 etc and passed to a Pl regulator This regulates the output voltage signal CURR_SIG to a value independent of cutting current This signal contains the fundamental and possible harmonics caused by the arc It is rectified after high pass filtering by R377 C309 and L1 The resulting voltage is proportional to
64. id for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units For detailed description of error codes see following pages Evaluation of test functions at start up External watchdog defective Internal watchdog defective CRC check of EPROM showed errors Patter test of RAM failed RAM defective Read out of measuring channels without signal application at idle Limits min 7 12 Idle meas Channel 180 current of high power supply outside of limits Limits O max 11 Idle meas Channel PWR L RF output power outside of limits Limits O max 11 Idle meas Channel B TST test channel bipolar relay outside of limits Limits 0 max 12 Idle meas Channel OSC VAL test channel oscillator outside of limits Limits min 7 max 12 Idle meas Channel B M VAL Bipolar monopolar recognition outside of limits Limits min O max 12 Idle meas Channel NE VAL Meas Channel PE recognition outside of limits i Measurement reference voltage 180 outside of limits Measurement reference voltage PWR_L RF output power Low 3 3 Limits 147 172 Measurement reference voltage B M VAL 4 1 Limits 0 max 5 Veneer determination ico 4 2 Limits 0 max 5 Offset determination U80 Output voltage high power suppl 4 3 Limits min 1 max 16 Offset determination PWR RF output power CPU ADC 4 4 Limits 1 83 Offset determination PW
65. ify the correct handpiece As an additional function the handpiece recognition unit delivers the status of footswitches over the data lines 3 2 3 Connection to high power supply The high power supply receives its information about the voltage desired over the equipment bus There is no further direct connection to the high power supply 3 2 4 Connection to Cut module The Cut module receives its control information via the equipment bus A function check of the Cut module is performed indirectly by the current consumption of the high power supply 3 2 5 Connection to Coag module As the Cut module the Coag module is also controlled via the equipment bus The monitoring is also made indirectly by checking the supply current 3 2 6 Connection to relay board The relay board is the central distributor for the RF power currents Controlling is done via the equipment bus A relay connects an input module to a handpiece All other handpieces and the other RF module are disconnected thereby obtaining an optimum on functional safety Furthermore the relay board sends the power supply data current voltage and mains breakdown to the CPU Measurement of HF leakage current delivers the RMS value of the leakage current as an analogue signal to the CPU Exceedance of the limit is transferred to the CPU as a digital signal not valid for A 3000 2000 25 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08
66. impedance a complete test of these relays can be performed With closed relays REL5 and REL7 respectively REL6 and REL8 a capacitance check of the patient safety capacitors during self test is also possible The HF flows back from the two patient electrode halves via the patient safety capacitors C7 and C8 and the not valid for A 3000 2000 38 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units capacitors C10 and C11 to the monopolar output transformer TR3 There are no more capacitive connections to the patient electrode The transformer TH5 is used for loop impedance tests between the two halves of the patient electrode This transformer as well as the other output transformers are designed for the applicable RF voltages Inserted into the RF signal circuit are the two transformers TR1 and TR2 Transformer is a current transformer and TR2 a voltage transformer With the corresponding signals the output power delivered by the RF modules is checked The evaluation is located on the piggy back board HFO_2 When controlling the relays by the relay driver IC1 the transistors Q1 and T1 block the relays in case REL_EN is at logical 1 This is the case when the l C components have not yet been initialized after switching on the equipment 7 3 Description of board HFO_B The board B is mounted as a piggy back board on board It contains all
67. ipment is simply done by plugging the gas hose into the quick locks 11 2 Internal gas system gas control unit and gas control board 11 2 1 General description The gas control unit serves for regulation and monitoring of Argon gas flow with Argon handpieces 11 2 2 Principle of operation The gas adjusted to constant pressure by the pressure regulator flows through a proportional valve Then the gas passes a throttle flow resistance and reaches the tube of the handpiece via a filter A pressure transducer measures the pressure before and after the throttle The pressure difference is an indication for gas flow On deviations form desired gas flow the error is corrected by a changed control of the proportional valve As the pressure difference is proportional to the square of gas flow volume flow resulting in very small values at small gas flows two additional throttles can be inserted between the pressure transducer by means of two magnetic valves This makes three gas flow control ranges Check of gas flow is performed by the second pressure transducer at the output If a maximum pre selected pressure is exceeded usually caused by obstruction of the handpiece tube this error will be recognized 11 2 3 Design of gas control unit Fig 11 1 shows the general design of the gas control unit The gas control unit consists of the following components 1 pressure regulator keeps input pressure constant 2 pressure switch
68. justed The cut module receives a fixed voltage The power regulation is set to a fixed value of 150W Another service function switches off the power supply and sets the power selection to zero Now the offset of the measuring amplifier for power measurement can be adjusted Service function 11 Resonance frequency monopolar amp bipolar Service function 12 Offset adjustment of measuring amplifier for power measurement and check and adjustment of arc detection For further details see adjustment of cut module not valid for A 3000 2000 64 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 12 4 5 8 Calibration of cut module power Service function 13 If the power in cut mode during soft and force coagulation is generally too high or too low a calibration can be performed This is done by choosing service mode 13 changing the parameter into the desired direction leaving service mode and checking the cut power at 210W with 2002 load Then enter service mode 13 again readjust if necessary and store the parameter After service function 13 1 the fine adjustments for force and blend can be done with 13 2 and 13 3in the same way as for 13 1 Sub function Parameter adjustment Cut mode step 4 210W 100W Blend step5 250W 12 4 5 9 Loudness adjustment Service function 1 Min Max loudness of volume control sub function 1 1Hex recomme
69. le Technical gas data and check gas flow for each step Generally the gas flow is correct if it does not deviate more than 25 from the nominal value 14 3 8 Test of gas flow check For gas delivery the equipment checks whether a handpiece delivers gas For this purpose the flow is measured and regulated Furthermore a check of gas pressure at the input of the equipment is done If the pressure at the input is too low empty gas bottle pressure below 4 5 bar the gas shortage indication lights up and a warning signal sounds If gas flow is impossible due to a clogged handpiece hose a warning is also given In both cases the argon coagulation is inhibited Checking is done with a connected Argon handpiece Select Argon step 3 and start equipment Close gas valve atthe gas bottle After pressure drops alarm sounds gas shortage is indicated and equipment switches off Open gas valve again and start equipment then kink the hose of the Argon handpiece interrupt gas flow Equipment must switch off alarm tone and indication gasflow interrupted must appear 14 3 9 Check of handpiece allocation relay In case the equipment has several handpiece sockets both monopolar handpieces are connected With activation of one of the handpieces it has to be checked whether the non activated handpiece delivers power In case power is delivered one of the handpiece allocation relays is defective not valid for A 3000 2000 87 3 not valid
70. lid for 1000 47 not valid for 3000 2000 not valid for Arco 2000 25 08 2004 S ring Service Manual Arco and RF units 10 Description of interface board The interface board serves for the data communication between CPU and the module It is part of the coagulator and the cut module each of them contain this board Electrical properties Voltage supply 15 Volt 0 Volt GNDA 5 Volt 0 Volt GND Data input 12 bit Connector 1 Data output 6 analog outputs Connector J2 8 bit digital Data back transfer 2 bit module back transfer signal DOWN signal for high Power supply connector J2 amp J3 to module status bus Via connector J1 and the optically isolated module control bus driver the interface board receives module control data and address data from the CPU The module control data appearing at the output of the opto coupler array are stored in the intermediate 1 after intermediate memory 1has received the clock signal strobe from the decoder In the following the CPU transmits address data to the interface board These address data determine by chip selector and address comparator which of the following units D A converter 1 2 3 4 5 6 or intermediate memory 2 has to take the data from intermediate memory 1 The stored data are transferred to the module via the module connection connector J2 which supplies the interface board with power The module sends a back mess
71. meter not valid for A 3000 2000 14 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Arrangement of modules of the Arco 1000 2 2 E _ E 1 Deen MG Mono Pi 600 2000 MA Argon Frontpanel modular design Gascontrol board Handpiece recognition r1 RF Output Module output unit assignment relays PE monitoring Bipo recognition rectifier 5 E 2 2 8 gt amp Z2 e K i KI mains board 2 low power supply mains relays screening 5 Synchroboard with socket o 2 Gasconnection E N D 25 BS 5 22 53 Loudspeaker se BE S Se LoudspeakerPotentiometer not valid for A 3000 2000 15 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Arrangement of modules of the Arco 1000 Table Top Test resistor 5 5 Ci 2 5 SE 3 K On Handpiecerecognition Output unit assignment relays PE monitoring Bipo recognition S RF Output Module si S O lt On 5 ds 5 2 E e A Hd E a Loudspeaker V
72. n 5 Coag module defective C Power supply data Mains connection 230v 10 50 Hzt 5 internally switchable to 115v 10 60 Hz 5 Mains fuses built into mains filter containing 2 fuses T 4A 250V according to DIN 41 662 for 230V mains voltage respectively T 8A 250V for 115v mains voltage Mains cable length 2 5 m with protective conductor mains part according to DIN 49 441 resp CEE 7 equipment part according to DIN 49 457 p 1 Plug and socket vulcanized to cable The cable must comply with actual standards and must have a cross sectional area of 1 Potential equalization Connector according to DIN Power consumption 1000 VA not valid for A 3000 2000 74 3 not valid for MBC600 2 not valid for 2000 not valid for Arco 1000 25 08 2004 56 Service Manual Arco and RF units Power diagram 350 300 _ 250 200 E 5 150 Cut 1 2 100 Cut 2 4 Cut 3 50 Cut 4 0 Cut 5 100 150 200 400 600 1000 2000 Resistance in Ohm Power diagram Blend E E 5 B A Blend 1 Blend 2 Blend 3 Blend 4 Blend 5 0 100 150 200 400 600 1000 2000 Resistance in Ohm not valid for A 3000 2000 75 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 56 Service Manual Arco and RF units
73. nd transferred to the CPU by a bus 11 3 2 Description of gas control board Fig 11 2 shows the block diagram of the gas control board The signals of the pressure sensors and the pressure switch of the gas unit go through the measuring amplifiers and signal conditioning to the interface The electrical feeding of the sensors is also done by the gas control board A conversion of analogue to digital measurement values is performed in the I C bus interface These values transferred to the CPU for evaluation The proportional valve as well as the magnetic valves are controlled by the CPU via the bi directional A pulse width modulator controlled by the analogue to digital converter of the I C bus interface feeds the proportional valve with a rectangular signal of variable pulse width This procedure reduces hysteresis effects of the proportional valve which otherwise could cause oscillations during regulation The power supply is 15v not valid for A 3000 2000 52 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 Service Manual Arco and RF units S ring AST ON ASI lt gt Kjddns 3 3 not valid for MBC600 not valid for Arco 1000 53 Block diagram gas control board fig 11 2 25 08 2004 un YMS adnssadq area
74. nded value recommended value 12 4 5 10 Check of power measurement Service function 14 This mode shows the delivered power in the parameter display decimal in Watts A comparison with a RF power meter informs about correct functioning See also Safety technical checks Sub function Calibration selected power W Cut power low Cut power high Coag power high Cut pulse power high Purpose of calibration is the adjustment of internal measuring circuits by means of externally measured values This is done by connecting a power meter in position 2000 setting Cut to 40W and selecting step 14 On activation the measured power value is shown in the Coag display resp Gas display Arco 1000 A correction can be made by means of the arrow keys Indicated and externally measured values should correspond The calibration has to be performed for all sub functions 14 1 5 as described above 12 4 5 11 Indication power supply voltage and current Service function 15 The power supply voltage and the power supply current of the previously selected power step is indicated in hexadecimal Sub function 1 power supply voltage Sub function 2 power supply current not valid for A 3000 2000 65 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 12 5 Service adjustments of the modules Service adjustments have to be made at the following boards
75. nterface which contains the necessary address decoding galvanic isolation opto coupler and a D A converter The current limiter limits the current to 7a by switching off the MOS switch If the current limiter is continuously active for more than 0 3 to 0 4 seconds e g due to a defective module or extreme overload the switching regulator is switched off for approx 5 seconds and then restarted The value of the mains transformer voltage 15v winding is monitored before the smoothing capacitor for the limits 215v and lt 27v In case of overvoltage or undervoltage the monitoring circuit cuts off the switching regulator and delivers a power fail signal not valid for A 3000 2000 30 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 5 3 Technical data Inputs 2 18v 1 x 15v from 3 separate windings of mains transformer input voltage switching regulator range 100 150v normally approx 130v from mains relay board Voltage smoothed and unregulated Data from microcontroller over the equipment bus Signal Down Down regulation of output voltage independent from microcontroller Signal range 0 7 to 15v Outputs Output voltage variable determined by microcontroller 0 to 80v max current 7a short circuit proof Voltage selection with 6 bit resolution step 1 25v Fixed voltages 15v 15v max load 400 ma Accuracy
76. or does not generate a reset signal and the CPU delivers the necessary trigger signals 15V and 5V source This unit generates 15V 15V and 5V and feeds the electronic circuits except the circuits of the power modules The secondary winding 22VAC 50Hz of the mains transformer is connected to the rectifier via fuse 51 and thermal fuse 513 The rectified voltage is smoothed and stabilized to 15V and 5V by means of two switching regulators The 15V and 5V circuits are normally protected by fuse 51 Another secondary winding of the mains transformer 19VAC 50Hz is rectified smoothed and stabilized to 15V by means of a fixed voltage regulator The 15V circuit is protected by fuse 512 not valid for A 3000 2000 21 E 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Voltage monitoring 5V source Over voltage protection This unit is activated if the 5V source exceeds the limit 10 In case the limit determined by a zener diode is exceeded a thyristor is fired and short circuits 5V to the thyristor voltage 1 2V In case of permanent short circuit the thyristor is protected against overheating gt 85 C by the thermal fuse 13 which is thermally coupled to the thyristor If the temperature at the thyristor exceeds 85 C fuse 5 3 melts and interrupts the connection to the 22VAC 50Hz Under voltage protection If the volta
77. our 2 ASI Ast ASt SurI03IuoJA AST lt AST AST JOJEUTWLIISIP MOPUTA lt ASI Arddns AS Surmjoours 013u02 A ST IIJ 0 17u09 Sunpo3AS A ST lt 307 J9ULIOJSUE I SUIEUI Sur dnoo AS lt 1023002 SUIQ23IAS A S Io 4 n 830100015 J9ULIOJSUEJ m sureur IIJ asny 3 not valid for MBC600 not valid for Arco 1000 292892 7 not valid for 3000 2000 2 not valid for 2000 Service Manual Arco and RF units S ring 25 08 2004 iagram mains 2 2 Block d A0 ASTI 10139195 IFEA 5 K ddns 10351591 31635405 Io asny JEUN L L Jo dnoo 03dQ K ddns I9A0d SI lt YUMS SCIA asny lt Iy sureur Josuapuoo 2105 ZH09 A0 c ASTI pue 19929 80199125 lt 3 not valid for MBC600 not valid for Arco 1000 24 not
78. overloaded not in use yet P1 Output power working pulse energy P2 Ignition pulse energy P3 arc detection Cut module D14 bipolar mode D31 arc regulation D47 power limiting D50 current limiting P2 offset power measurement P3 resonance frequency adjustment bipolar 4 resonance frequency adjustment monopolar Handpiece recognition board D59 interrogation from CPU must blink periodically RF Output Module HFO Piggyback board P1 adjustment of Offset power test amplifier Offset voltage CPU D1 Idle LED yellow shows working of CPU by flickering D2 Seri LED red always on not valid for A 3000 2000 55 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Arrangement of LEDs and potentiometers I Open case is an Arco 3000 placement of the boards is different in other units placement of potentiometer is the same D28 D29 D50 D31 D10 D56 D14 D47 P1 power gt 023 2 P2 ignition pulse energy P2 Offset power 5 sparc detector control i D27 sensitivity E d P3 Frequency monopolar 2 D11 P4 Frequency bipolar S S eb en en c gt om x Q Q P2 Balance of current limiting P3 Balance of output voltage D23 display current limiting D10 electric arc recognize
79. ptation circuit 0V to 4V The adapted recognition signal switches the output level of the comparator in the following window discriminator and is transformed into digital form by an A D converter PC chip Now these signals can be evaluated by the CPU The foot switch interrogation is performed in the same way as for the finger switches not valid for A 3000 2000 46 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 Service Manual Arco and RF units S ring 25 08 2004 board ion t iece recogni Block diagram Handp UT 2315300 4 42145100 c Je odrg 4 aejod q c lt syn aatdpuen C ASE V ND A 7 Josodsueaj ANDIAS E gt TdpueH YOVIMS pue nyusun 7 ng Juowd nba JOJBUNWLIISIP lt opum 5 5035 aND AS pue sng J 1 Anesou ANISOd N dO gt 01 OD uondepe BusIS AN PASI JABM AJEU Teusts 9 npour jndjno Imod 3 not valid for MBC600 not va
80. range 350w RF Handpiece with switches Bipolar connecting cable Foot switch The following adjustments have to be carried out Resonance frequencies monopolar and bipolar mode Adjustment offset voltage of power measuring amplifier Check of arc regulation not valid for A 3000 2000 67 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Adjustment resonance frequency monopolar Start equipment in service mode select service function 11 connect RF meter to monopolar handpiece with 1000 load press handpiece switch Cut and adjust by means of P3 on cut module to maximum output power Power approx 85W Adjustment resonance frequency bipolar connect bipolar connecting cable to RF meter select 1000 load start the equipment foot switch cut Adjust by means of P4 to maximum output power Power approx 85W Adjustment offset of power measuring amplifier Select service function 12 sub function 1 Power supply delivers no voltage selected power zero adjust potentiometer P2 so that LED D47 cut module just starts to light up Press Cut switch with this adjustment Check of arc regulation Select service function 12 Power supply delivers no power select appropriate parameters connect signal generator sine signal source resistance 50Q to handpiece and PE electrode Set frequency to 1 05 MHz Increase output volt
81. regulator works exactly the same way as for current limiting analog switch IC3c and Pl regulator with U1d and acts also on the DOWN signal Power measurement is done with a voltage and current signal retrieved from current and TR4 voltage Both RF signals RF_CURR and RF_VOLT are multiplied in real time by a broadband multiplier U7 As the Multiplier delivers only 300mV 100W an amplification with the operational amplifiers U2a U2b and U2c is necessary before the power signal can be passed to the Pl regulator via the analog switch Due to the large adjustment range of power from 1 to approx 500W a regulation only by preset value P_SET is insufficient instability at low preset values Therefore the amplification of the power signal for the multiplier is switched in 8 range steps This is done by the analog switch IC5 and the resistors R412 to R419 By means of P2 the offset of the multiplier and the operational amplifier U2a is adjusted to zero Beginning of power limiting is transferred to the microprocessor by the signal PREG via the interface board IF02 6 8 Arc regulation Cutting of tissue is only possible when the RF voltage at the active electrode is so high that a fine arc occurs between electrode and tissue If no arc is achieved only coagulation of tissue occurs The voltage at the active electrode necessary for an arc depends on kind of tissue and geometry of electrode If the cut voltage is increased beyond t
82. t un J4 2 J2 Relays Bipolar J3 gt Bipolar a Output transformers mono bipo 1 Di power detection Act2 J5 HS2 PE monitoring on piggy J31 1 Bipolarautomatic backboard Actl J m gt HS1 J1 Cut module Sinus on Interface E 2 T TT 34 d S Coagulation module m BL 5 E 37 Pulse 5 IC Sockel M une t lm im P Qa 2 E E 2 gt S J i 2 3 3 92 High power supply 0 100V 231 E 15 J4 E J5 4 Synchro Maa Numbers in square brackets are plug contacts Synchro signal Numbers in round brackets are polarities of cables not valid for A 3000 2000 not valid for Arco 2000 19 3 not valid for MBC600 not valid for Arco 1000 25 08 2004 56 Service Manual Arco and RF units Block diagram primary current supply of the units un un E B J6 J2 Ria 2pol Ria 8pol E ki 2 2 ic a m BREE 2 E E E 2 u3 q3 mme ALOH WS D vo 2 S z SH Fixing side High power supply 7 not valid for 3000 2000 20 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Description of units
83. t valid for Arco 1000 25 08 2004 Cut module Plug J1 RF output module Plug J1 RF output module Plug J2 J7 power supply 5V 15V 15V J16 connection CPU board J1 J2 status bus J3 J5 mod control bus J6 HSE bus J7 J4 power supply 51 15V 15V Gas control board J1 PC bus J2 15V not valid for A 3000 2000 not valid for Arco 2000 S ring RF output module RF modules Test resistor Bipolar connection PE connection Socket Argon Socket monopolar Socket monopolar Socket Argon Socket bipolar Foot switch sockets RF output module CPU Power supply board CPU handpiece bus CPU bus RF output module Loudspeaker RF output module not connected Cut coag module and high power supply Handpiece recognition Handpiece recognition and front p gas contr Power supply board Handpiece recognition RF output module CPU from CPU Sensors gas pressure Sensor voltage 15V Gas pressure switch Valves 59 1 2 connected 3 RF coag module 4 RF cut module 5 RF cut module 2 pole 2 pole 2 pole 1 pole pin at side as J5 8 pole MICA 8 pole MICA 4 pole MICA 8 pole MICA 5 pole Mascon 1 2 GND 5V 3 4 15V GND 4 5 GND 15V 20 pole MICA 14 pole MICA 8 pole MICA 4 pole RIA 14 pole MICA 14 pole MICA 14 pole MICA 20 pole MICA 14 pole MICA 5 pol
84. tage connects or disconnects the power supply of the MOS bridge thereby switching it on or off It consists of the MOS transistor T7 This transistor is controlled by the driver T9 and T10 which again is controlled by the AND gate CMOS IC1 Only if the three inputs of this gate are simultaneously high the final stage is switched on 6 5 Short circuit switch off This circuit switches off the final stage within microseconds in case a maximum current is exceeded The final stage is thereby protected against overload in case of short circuit and spark development when short circuiting the bipolar tweezers is significantly reduced As the current through the MOS bridge is nearly proportional to the output current this current is used for determining the RF output current The final stage current goes through resistor H121 0 1 0 The voltage drop over this resistor is amplified by operational amplifier Uta and Utb The analog switch IC4a serves as a range switch If the measured current Signal 1 VAL exceeds the reference value I SET the output of comparator U5a goes high and switches off the final stage for a short time The Maximum current SET is transferred to the cut module in analog form from the interface board 6 6 Current limiting current control The current limiting circuit limits the output current to the maximum value given by the signal SET see above The current regulation is performed by reducing the power supply voltage
85. the equipment the micro controller first checks all operational parameters necessary for error free operation If the self test detects deviations from the given specifications an error code is displayed on the front panel and the use of the equipment is inhibited In order to start the equipment nonetheless service mode has to be started by pressing the button Cut step 1 during switch on see below This is only allowed for service purposes The meanings of the error codes are given in the chapter Error indication at system start 12 1 Description of LEDs and adjustment potentiometers The following plans show the placements of potentiometers and LEDs The function of the potentiometers is described in more detail in connection with the adjustment procedures of the different modules The meanings of the LEDs for function check of the equipment are as follows High power supply D23 Current limiting Lights up if maximum output current is exceeded e g short circuit of Cut module D27 voltage outside the allowable values 230v 15 P2 Current limiting P3 Voltage adjustment 100V 1 not valid for A 3000 2000 54 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Coagulator module D10 arc recognized D11 spray mode always lights when module starts D28 working impulse voltage reached D29 ignition voltage reached D56 module
86. the harmonic contents in the cut signal and corresponds to the arc intensity during cutting This actual signal and the reference signal are routed via the analog switches IC3a and b to the to the Pl regulator U2d which regulates the power supply down at too high arc intensity signal DOWN The down regulation is notified by the signal SPREG to the interface board 1502 and thereby to the microprocessor for evaluation 6 9 Pulse generation and control logic The following operational modes are known to the control logic Cutting Coagulation continuous operation pulsed operation not valid for A 3000 2000 35 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 6 10 Signal shapes Zeit time This signal shape is used for the function Cutting without Blend Spannung voltage Spannung voltage Pulse modulated RF current duty cycle 3 8 37 5 This signal shape is used for the function Cutting with Blend not valid for A 3000 2000 36 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 Service Manual Arco and RF units S ring 25 08 2004 Block diagram Cut module DIA dS DIA Md LAS 45 ATAVNA 1023002 NAOd pm lt H gt 1807 E
87. the table below It has to be considered that the handpieces deliver power A patient electrode must be connected The following table shows gas flows handpiece types and service functions Service function Sub function Remarks 3 1 IC S VIC S N rgo Flex Troc rgo Flex Troc rgo Flex Troc rgo Flex Troc Argo Flex Troc Broncho probe Broncho probe Broncho probe Broncho probe Broncho probe 4 0 l min 5 5 7 0 l min 1 5 2 0 l min 2 5 l min 3 5 l min 0 5 l min 1 0 l min 1 0 l min gt like ICS Service function C Wee 9 s GENET 191 ____5 gt gt moon For these measurements a gas flow meter calibrated for argon gas and with a measuring range from 0 2 to 10 has to be used which is connected to the handpiece by means of a soft hose not valid for A 3000 2000 63 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 12 4 5 5 Adjustment of patient electrode recognition Service function 5 This function sets the thresholds for the transfer resistance PE electrode to patient The PE monitor recognizes four ranges for the transfer resistance 0 to 5 Ohm PE electrodes undivided type Indication yellow
88. tmarke nicht definiert circuit plans 8 10 EE Fehler Textmarke nicht definiert circuit plans 9 10 TEE Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert GUT MOU asa toe cia etd tan Fehler Textmarke nicht definiert layout EI Fehler Textmarke nicht definiert not valid for A 3000 2000 EA 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units circuit plans 1 4 WEE Fehler Textmarke nicht definiert circuit plans 2 4 WEE Fehler Textmarke nicht definiert circuit plan 3 4 Fehler Textmarke nicht definiert circuit plans 4 4 WE Fehler Textmarke nicht definiert RF output board Fehler Textmarke nicht definiert layout EI Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert circuit EIERE Fehler Textmarke nicht definiert layout LE Fehler Textmarke nicht definiert circuit plans 1 3 TEE Fehler Textmarke nicht definiert circuit plans 2 3 TEE Fehler Textmarke nicht definiert circuit plans 3 3 EE Fehler Textmarke nicht definiert Coag Modul nnns Fehler Textmarke nicht definiert layout EI Fehler Textmarke nicht definiert circuit plan E Fehler Textmarke nicht definiert circuit plan 2 5 eege ee Fehler Textmarke nicht definiert circuit plan TE E Fehler Textmarke nicht definiert handpiece
89. to C121 serial resonant circuit and L2 C122 and C123 parallel resonant circuit the rectangular signal is filtered to a sinusoidal signal with low distortion The resonance frequency is approx 350kHz The rectangular signal is tuned to this frequency As the capacitance of the connection cable is different for monopolar and bipolar operation correctional capacitors can be switched in by a relay This reduces the reactive current and thereby the losses in the final stage The signal is then routed via the current transformer to the output socket TR4 acquires the actual output voltage for power registration not valid for A 3000 2000 33 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 6 3 Oscillator and driver IC7works as an oscillator with a frequency of approx 350kHz The frequency is adjusted by potentiometers P4 independently for monoplolar and bipolar operation This is necessary because the transformation ratio of the output transformers for mono and bipolar mode and the patient protection capacitors influence the series capacitance of output resonant circuit This results in slightly different resonance frequencies The oscillator is followed by a 2 stage driver circuit T53 T54 T1 and T2 Now the driving power is sufficient to drive the final MOS bridge via the driver transformer TR2 6 4 Switching stage The switching s
90. ts 0 W frequency V kHz Force 1 5W 2000 1W 30W iii 860 Force 2 1320 Spa 40W 2000 65W 2000 sow z000 60W 100W 9000 8800 Spray 5 120W 2000 80W 120W S 9000 5800 zow Aw 90004800 20W sow _ 8 en 1000 W Ww Spray 2 Spray 3 Spray 4 1 20W 2000 40W 2002 65W 200 2 90W 200 2 120W 200 2 d Q ug lt jo jo Jo 51551515 A N Argon 1 2 5 probe 8 Argo 20W 2002 Troc 20 3 Argon 2 piste 8 Argo 35W 2002 Troc 20W Argon 3 ie prone amp Argo 50W 2002 Troc Argon 4 De pias amp Argo 70W 2002 Troc Argon 5 Be poke amp Argo 90W 2002 Troc 35 W 50W 8 65 9 Ignition Working voltage 20 20 Ww 20W 2000 W Ww 30W W Ww 35W 2000 50W 2000 65W 2000 80W 2000 1 6 probe 1 6 probe 1 6 probe 40 50 1 6 probe 60W OW 5W 50W 65W OW Ow 30W 40W 50W 60W 1 6 probe 80W Bipo Cut 1 130W 2000 1 100W 100 2 A sos 5 gt 55 65 625 55 O Ar op Nn Bipo 7 Output voltages no load values pulse shaped signal ATTENTION increased power only since software version 3 20 Older units might have lower power output not valid for A 3000 2000 70 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service
91. unctions The procedure is different for ARCO 1000 and the other types In general it has to be distinguished between a service function and the sub functions belonging to this function The sub function can only be selected after the main function is selected The required parameters for adjustment are set and must be stored The stored parameters are placed non volatile memory and are effective after leaving the service mode ARCO 1000 Select main function with the keys Argon 5 increase function number and Argon 4 decrease function number Select appropriate sub function by means of power selector up or down indication Main function Sub function in the power indicator Increase or decrease parameters with the gas flow selector up down The gas flow indicator shows the actual parameter In service function 0 the software version is displayed Store the adjusted parameter by pressing the Argon 3 key This is confirmed by a confirmation tone other types Select main function with the keys Cut 5 increase function number or Cut 4 decrease function number Select appropriate sub function by means of Cut power selector up or down indication Main function Sub function in the Cut power indicator Increase or decrease parameters with the Coag power selector up down The Coag power indicator shows the actual parameter In service function 0 the software version is displayed Store the adjusted parameter
92. urrent under idle conditions By module selection the ignition pulse energy can be switched from the internal fixed value to the value given by the micro computer By program selection different ignition sequences stored in an EEPROM are available not valid for A 3000 2000 42 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units 8 3 Technical data coagulator module Output power 5 150W by selection of pulse energy and frequency Output voltage ignition and standard pulses 1200 at primary winding of output transformer Pulse frequency 5000 80000Hz Ignition frequency 250Hz to max 12 of pulse frequency sequence stored in EEPROM Automatic functions Frequency and ignition pulse energy Status information ignition performed module overload 8 4 Signal shapes Zeit time This signal shape is used for the function Soft coagulation in steps 1 5 Spannung voltage Spannung voltage RF current pulsed Sinus signal duty circle 1 4 with periodically damped amplitude This signal shape is used for the function Force coagulation in steps 1 5 not valid for A 3000 2000 43 3 not valid for MBC600 not valid for Arco 2000 not valid for Arco 1000 25 08 2004 S ring Service Manual Arco and RF units Spannung voltage Zeit time RF Current of fulguration This signal shape is used for the function Spray coa
93. valid for 3000 2000 not valid for Arco 2000 25 08 2004 S ring Service Manual Arco and RF units 3 Description of microcontroller unit board CPU 3 1 General description The CPU is the central control system of the equipment It gets information from other units by parallel data lines or via the I C bus Data output is performed via the addressable systembus by pulse with modulated signals or as for data input by parallel data lines respectively the l C bus Analogue input data are digitized by the processor An output for connection of loudspeakers is provided Furthermore there is a possibility to communicate with other equipment via a serial interface 3 2 Connection to other units 3 2 1 Connection to frontpanel The CPU is connected to the frontpanel via the Input of commands is done by reading the different I C input chips Output of data for display is done by writing to the corresponding IC output chips Furthermore the CPU board delivers power to the frontpanel 3 2 2 Connection to handpiece recognition unit Data transfer between CPU and handpiece recognition unit is done via parallel data lines The handpiece recognition unit needs support from the CPU in order to detect a handpiece Different possibilities about the wiring of the connected handpiece are investigated and the result of this investigation is passed back from the handpiece unit to the CPU The CPU is thereafter in a position to ident

SERVICE-MANUAL Arco-2000 Arco-1000 MBC-601 MBC

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