Phaco 9000 - DGH Technology
Contents
1. 2 eet A Rena peel INADEQUATE U S POWER virite irren ee pi RR EH USER SERVICEABLE PROBLEMS Rr tr pecie e sen INTERNAL SYSTEM 8 INTERNAL ee LIST OF ILLUSTRATIONS DIAGRAM SYSTEM INTERCONNECTION P N 896004 CONSOLE ASSY P N 899513 FRONT PANEL PCB ASSY P N 899504 XDUCER VENT ASSY P N 899090 U S CONTROLLER ASSEMBLY P N 899183 MODULE VIT ASSEMBLY P N 899182 AUDIO VAC ASSY P N 899175 ASSEMBLY 25V 100W POWER SUPPLY P N 899124 DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE iv PAGE 22 22 22 23 23 24 24 24 24 24 25 25 25 25 PRODUCT INFORMATION CONTENTS THIS MANUAL IS DIVIDED INTO FIVE 5 SECTIONS SECTION ONE PROVIDES INFORMATION ON THE PRODUCT AND ITS USE SECTION TWO PROVIDES PROCEDURES FOR EVALUATION OF THE PRODUCT TO VERIFY THAT ALL SYSTEMS ARE FUNCTIONAL SECTION THREE PROVIDES THEORY OF OPERATION FOR THE OVERALL SYSTEM AND THE FUNCTIONAL ASSEMBLIES SECTION FOUR PROVIDES PROCEDURES FOR THE ROUTINE MAINTENANCE OF THE PRODUCT SECTION FIVE PROVIDES DOCUMENTS AND PROCEDURES NECESSARY FOR SERVICING THE PRODUCT MANUAL INTENT IT IS THE INTENT OF THIS MANUAL TO PROVIDE INFORMATION ON THE USE MAINTENANCE AND SERVICE OF THE PRODUCT THE MANUFACTURER MAINTAINS FACILITIES FOR THE IMMEDIATE SERVICING AND REPAIR OF THIS PRODUCT AND RECOMMENDS THAT THE PRODUCT BE RETURNED TO THE MANUFACTURER FOR SERVICE AND REPAIR2. BUTTON HEAD SCREWS ON THE UNDER SIDE OF THE CHASSIS BELOW THE FRONT PANEL USING A 5 64 IN ALLEN WRENCH REMOVE THE TOP COVER BY PULLING UPWARDS ON THE REAR OVERHANGING LIP OF THE COVER UNPLUG THE TWO 2 CABLES LOCATED AT THE TOP OF THE FRONT PANEL CIRCUIT BOARD AT THE J1 AND J2 CONNECTORS ON THE U S CONTROLLER BOARD UNPLUG THE PINCH VALVE AT THE J6 CONNECTOR UNPLUG THE U S CONNECTOR AT THE J5 CONNECTOR DISCONNECT THE TUBING FROM THE VIT CONNECTOR AT THE IN LINE CONNECTOR UNPLUG THE CABLE FROM THE TRANSDUCER SENSE VENT ASSEMBLY AT THE J40 CONNECTOR SEPARATE THE SIDE PANELS AND FRONT PANEL AS A SINGLE UNIT FROM THE CHASSIS BY LIFTING STRAIGHT UP SOME FORCE MAY BE NECESSARY AS THE COMPONENTS ARE TIGHT FITTING RAISE THE PANEL ASSEMBLY TWO 2 INCHES AND DISCONNECT THE CAUTERY CABLE AT THE U S CONTROLLER BOARD AT J20 DISCONNECT THE PERISTALTIC PUMP MOTOR CABLE AT THE U S CONTROLLER AT J9 REMOVE THE FRONT SIDE PANEL ASSEMBLY AS A UNIT FROM THE CHASSIS ASSEMBLY FRONT PANEL ASSEMBLY ON THE PANEL ASSEMBLY REMOVE THE PAIR OF PHILLIPS HEAD SCREWS THAT HOLD EACH SIDE PANEL TO THE FRONT PANEL DETACH THE FRONT PANEL FROM THE FRONT BEZEL BY REMOVING THE ATTACHING FOUR 4 PHILLIPS HEAD SCREWS FRONT PANEL PCB SEPARATE THE FRONT PANEL PCB FROM THE FACEPLATE BY FIRST REMOVING THE KNOBS USING A 1 16 INALLEN WRENCH REMOVE THE HARDWARE SECURING THE POTENTIOMETERS USING 5 16 IN NUT DRIVER REMOVE THE HARDWARE SECURING THE ROTARY SWITCH MO
3. DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 30 RAISE IRRIGATION SOLUTION CONTAINER USE SMALL DIAMETER U S ASP TUBING SET DESIGNED FOR U S VACUUM gt 80 mmHg TIGHTEN TIP REPLACE WORN TIP WRENCH REPLACE WITH NEW U S HANDPIECE USER SERVICEABLE PROBLEMS SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION NO SURGEON CONTROL CONTROL SWITCH IN SET CONTROL SWITCH TO PANEL POSITION SURGEON NO AUDIO FEEDBACK OF VOLUME CONTROL SET TO ADVANCE VOLUME VACUUM MINIMUM CONTROL KNOB NO DISPLAYS LIT LOOSE OR FAILED POWER CORD RESEAT REPLACE POWER NOT FUNCTIONAL CORD DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 31 INTERNAL SYSTEM FAILURES SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION SYSTEM DOES NOT FOOTPEDAL BAD REPLACE FOOTPEDAL RESPOND PROPERLY TO FOOTPEDAL CONNECTOR ON AUDIO VAC REPLACE AUDIO VAC ASSY DAMAGED ASSEMBLY PERISTALTIC PUMP WORN PUMP GEARTRAIN REPLACE PUMP MOTOR DOES NOT ROTATE PROPERLY NO PNEUMATIC FAILED COMPRESSOR REPLACE VIT MODULE PRESSURE IN VIT MODE FAILED SOLENOID REPLACE VIT MODULE NO CAUTERY OUTPUT SHIPPING DAMAGE TO CAUTERY REPLACE U S CONTROLLER NO AUDIO FEEDBACK FAILED AUDIO VAC ASSEMBLY REPLACE AUDIO VAC TONE VARIATION ASSEMBLY WITH VACUUM POWER SWITCH BREAKER FAILED POWER SUPPLY REPLACE POWER SUPPLY REPEATEDLY TRIPS NO FUNCTIONS FAILED POWER SUPPLY REPLACE POWER SUPPLY DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 32 INTERNAL SIGNALS CONN PIN SIGNAL M MENT
4. FRONT PANEL ASSEMBLY THE FRONT PANEL CONNECTIONS AND DESIGNATORS ARE LISTED ON PAGE 33 THE INTERNAL SIGNALS SECTION OF THE TROUBLESHOOTING GUIDE ALONG WITH THE NOMINAL RANGES OF VOLTAGES AND SIGNALS THE FIVE 5 CONTROL POTENTIOMETERS ARE CONNECTED POTENTIOMETRICALLY AND THE VOLTAGE AT THE WIPER OF EACH POT SHOULD VARY CONTINUOUSLY WITH THE POTENTIOMETER SETTING THE MODE SWITCH GROUNDS IN TURN EACH OF THE FIVE 5 MODE SWITCH OUTPUTS THEREFORE THE OUTPUT PIN OF THE MODE SELECTED SHOULD MEASURE APPROXIMATELY 0 V ALL OTHER OUTPUTS OF THE SWITCH SHOULD MEASURE 5 V THE FRONT PANEL METERS INDICATE VACUUM LEVEL U S POWER SETTING AND ACCUMULATED U S ENABLED TIME POT R25 ADJUSTS THE CALIBRATION OF THE TIMER DISPLAY BECAUSE THE TIMER IS CONFIGURED USING A VOLTMETER DISPLAY THE TIMER CAN BE ADJUSTED IN THE STATIC POSITION BY ACCUMULATING A KNOWN U S ENABLED TIME AND THEN ADJUSTING THE DISPLAY FOR THAT TIME WHILE U S POWER IS DISABLED POT R26 ADJUSTS THE CALIBRATION OF THE VACUUM DISPLAY POT R29 ADJUSTS CALIBRATION OF THE U S POWER DISPLAY THE U S POWER DISPLAY IS CALIBRATED WHEN THE POWER CONTROL IS SET AT THE MAXIMUM CLOCKWISE POSITION AND THE DISPLAY READS 100 THE VACUUM DISPLAY SHOULD BE CALIBRATED TO READ 500 mmHg WHEN AN EXTERNAL VACUUM PRESSURE METER INDICATES THAT 500 mmHg OF VACUUM IS BEING APPLIED TO THE VACUUM VENT PORT FOR CALIBRATION PURPOSES A 20 cc SYRINGE CAN BE CONNECTED TO THE VACUUM VENT PORT TO CREATE THE APPROP
5. ANY POINT OF CONNECTION INCLUDING CONNECTIONS TO THE FILTER DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL 15 FLUIDICS TESTS PERFORM THE FOLLOWING LIST OF TESTS PER THE OPERATOR S MANUAL P N 897182 TEST PAGE FIGURE U S HANDPIECE SYSTEM TEST IRRIGATION FLOW 21 14 U S HANDPIECE SYSTEM TEST ASPIRATION VENT 22 15 U S HANDPIECE SYSTEM TEST MAINTENANCE 23 16 I A HANDPIECE SYSTEM TEST IRRIGATION FLOW 31 24 VA HANDPIECE SYSTEM TEST ASPIRATION VENT 32 25 VA HANDPIECE SYSTEM TEST MAINTENANCE 33 26 U S TESTS SET THE MODE SWITCH TO U S LO VAC THE PULSE PUSH BUTTON TO U S STD NON PULSE THE U S POWER CONTROL TO 100 AND THE CONTROL SWITCH TO SURGEON ATTACH A STANDARD PHACO TIP WITH SQUARE HUB CONFIGURATION TO THE U S HANDPIECE SUSPEND THE HANDPIECE ABOVE A CONTAINER OF WATER WITH THE TIP FULLY IMMERSED IN THE WATER SLOWLY DEPRESS THE FOOTPEDAL TREADLE COMPLETELY WHEN THE FOOTPEDAL TREADLE POSITION PASSES DETENT 2 A FAINT HISSING SOUND SHOULD COME FROM THE U S HANDPIECE TIP AS THE FOOTPEDAL TREADLE IS FURTHER DEPRESSED THE HISSING SOUND SHOULD CONTINUOUSLY INCREASE IN VOLUME TO THE MAXIMUM TREADLE POSITION ONCE THE MAXIMUM TREADLE POSITION IS REACHED MAINTAIN THAT POWER LEVEL AND SLOWLY RAISE THE HANDPIECE AWAY FROM THE WATER WITHOUT COMPLETELY REMOVING THE TIP FROM THE WATER WHEN THE ATTACHMENT NUT OF THE TIP REACHES THE WATER SURFACE A CRATER DEPRESSION IN THE WATER SURFACE SHOULD BE C
6. IN THIS SECTION ARE LISTED BELOW THE PROCEDURES WERE WRITTEN FOR USE WITH THE EQUIPMENT LISTED ITEMS OTHER THAN THOSE LISTED MAY BE USED IF THEY MEET OR EXCEEDS THE PERFORMANCE OF THE LISTED EQUIPMENT AN OPERATOR S MANUAL P N 897182 IS REQUIRED FOR SYSTEM SETUP AND SYSTEM TEST TEST AND REPAIR KIT OSCILLOSCOPE OR ANALOG NEEDLE MULTIMETER WITH HIGH REQ DERATING CURVE DIGITAL VACUUM PRESSURE GAUGE 6002 POWER RESISTOR STOPWATCH CHECK VALVE TUBING KIT QTY 2 SYRINGE SQUARE NUT PHACO TIP TEST CHAMBER GRADUATED CYLINDER HEMOSTAT ALLEN WRENCHES NUT DRIVERS OPEN END WRENCHES PHILLIPS SCREWDRIVERS ADJUSTMENT TOOL DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL 14 IRRIGATION VALVE TEST CONNECT THE IRRIGATION BOTTLE AND TUBING TO THE DGH 9000 PER U S HANDPIECE SYSTEM SETUP IRRIGATION TUBING SET FIGURE 10 OF THE OPERATOR S MANUAL P N 897182 LEAVING THE END OF THE IRRIGATION TUBING UNCONNECTED TO THE U S HANDPIECE PRIME THE IRRIGATION TUBING TO PURGE ANY AIR FROM THE TUBING OBSERVE THE END OF THE TUBING WITH THE FOOTPEDAL TREADLE IN THE RELEASED POSITION THERE MUST BE NO IRRIGATING SOLUTION FLOW FROM THE TUBING END SUSPEND THE TUBING END ABOVE THE GRADUATED CYLINDER WITH THE IRRIGATION TUBING END 65 cm BELOW THE SURFACE LEVEL OF THE SOLUTION IN THE DRIP CHAMBER WITH THE MODE SWITCH IN THE IRR POSITION DEPRESS THE FOOTPEDAL TREADLE FOR 60 SECONDS AND MONITOR THE FLOW OF FLUID INTO THE GRADUA
7. IS DISPLAYED BY THE VACUUM DISPLAY WHENEVER THE FOOTPEDAL TREADLE IS IN THE RELEASED POSITION AND THE MODE CONTROL IS IN THE VA OR VIT POSITIONS U S VAC THE U S VAC CONTROL SETS THE MAXIMUM PRESET LIMIT FOR VACUUM IN THE U S LO VAC AND U S HI VAC MODES THE RANGES FOR THESE MODES ARE 0 100 mmHg AND 0 200 mmHg RESPECTIVELY THE PRESET U S VAC VALUE IS DISPLAYED BY THE VACUUM DISPLAY WHENEVER THE FOOTPEDAL TREADLE IS IN THE RELEASED POSITION AND THE MODE CONTROL IS IN THE U S LO VAC OR U S HI VAC POSITIONS VACUUM DISPLAY WHEN THE FOOTPEDAL TREADLE IS IN THE RELEASED POSITION THE VACUUM DISPLAY INDICATES THE MAXIMUM PRESET LIMIT FOR VACUUM IN THE SELECTED MODE WHEN THE FOOTPEDAL TREADLE IS DEPRESSED THE VACUUM DISPLAY INDICATES THE ACTUAL VACUUM IN THE ASPIRATION TUBING RATE THE RATE CONTROL SETS THE ASPIRATION FLOW RATE OF THE PERISTALTIC PUMP BECAUSE THE PERISTALTIC PUMP IS A QUASI CONSTANT DISPLACEMENT DEVICE FLOW RATE IS LARGELY INDEPENDENT OF ASPIRATION VACUUM THE CONTROL IS ADJUSTABLE OVER THE RANGE OF 10 40 cc MIN WITH A SUGGESTED RANGE OF 10 20 cc MIN FOR THE VIT MODE REFLUX THE REFLUX MODE HAS NO ASSOCIATED CONTROL AS THE PUMP SPEED IS FACTORY PRESET TO 25 cc MIN WHENEVER THE REFLUX IS ENABLED IN THE REFLUX MODE THE FLOW OF THE PERISTALTIC PUMP IS REVERSED REFLUX IS ENABLED BY DEPRESSING THE REFLUX SWITCH MOUNTED ON THE UNDERSIDE OF THE HOOD OF THE FOOTPEDAL THE POSITION OF THIS MOUNTING ALLO
8. THE PRODUCT CONTAINS NO USER SERVICEABLE COMPONENTS AND IN ALL CASES ONLY QUALIFIED PERSONNEL SHOULD ATTEMPT SERVICE AND REPAIR ASSOCIATED DOCUMENTS INFORMATION NECESSARY FOR THE PROPER USE OF THIS PRODUCT IS CONTAINED IN THE DOCUMENT DGH TECHNOLOGY INC DGH 9000 DGH 9000 PHACO OPERATOR S MANUAL P N 897182 THIS DOCUMENT IS SUPPLIED WITH EACH SURGICAL SYSTEM COMPLETE INFORMATION FOR THE CLEANING AND STERILIZATION OF THE ULTRASONIC U S HANDPIECE IS PROVIDED IN THE DOCUMENT CLEANING AND STERILIZATION U S HANDPIECE P N 897100 THIS DOCUMENT IS SUPPLIED WITH EACH U S HANDPIECE ADDITIONAL COPIES OF THESE DOCUMENTS ARE AVAILABLE FROM THE MANUFACTURER FOR A NOMINAL CHARGE PRODUCT DESCRIPTION THE DGH 9000 DGH 9000 PHACO DGH 9000 IS A SOPHISTICATED SURGICAL TOOL DESIGNED FOR OPHTHALMIC SURGEONS IT IS INTENDED TO BE USED ONLY BY THOSE SURGEONS FAMILIAR WITH EXTRACAPSULAR CATARACT EXTRACTION ECCE AND OR PHACOEMULSIFICATION PHACO IT IS DESIGNED AND MANUFACTURED TO BE RELIABLE SAFE AND EASY TO OPERATE THE DGH 9000 IS DESIGNED TO PROMOTE OPERATOR SAFETY WHEN USED PROPERLY THE DGH 9000 CONFORMS TO THE STANDARDS SET FORTH BY UNDERWRITERS LABORATORIES INC FOR MEDICAL AND DENTAL EQUIPMENT UL544 DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 1 THE COMPLETE DGH 9000 CONSISTS OF THE COMPONENTS SHOWN IN FIGURE 1 PAGE 8 OF THE OPERATOR S MANUAL P N 897182 WHICH ARE THE CONSOLE THE FOOTPEDAL AND THE P
9. VACUUM HI 0 200 mmHg ASPIRATION RATE 10 40 cc MIN REFLUX 25 cc MIN U S POWER POWER 0 100 40 kHz 60 W MAX VITRECTOR RATE SINGLE CUT S PNEUMATIC 30 PSI ATMOSPHERE 60 600 CUTS MIN CAUTERY POWER 0 100 1 MHz SQUARE WAVE BIPOLAR 0 10 W 600 LOAD 50 W MAX INPUT POWER REOUIREMENTS NOMINAL VOLTAGE 100 120 220 240 15 FREOUENCY 50 60 Hz GROUND CURRENT LEAKAGE MAXIMUM CURRENT lt 100 uA ENVIRONMENTAL OPERATING TEMPERATURE 10 40 C STORAGE TEMPERATURE 10 C 50 C HUMIDITY 15 95 NON CONDENSING OPERATING ALTITUDE 3 000 meters MAXIMUM ALTITUDE 12 000 meters PHYSICAL HEIGHT 10 16 cm 4 00 in WIDTH 37 52 cm 14 77 in DEPTH 29 91 cm 11 78 in WEIGHT 12 8 kg 28 3 Ib CONSOLE FOOTPEDAL DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 3 FRONT PANEL CONTROLS REFER TO SPECIFICATIONS CONSOLE FIGURE 2 PAGE 9 OF THE OPERATOR S MANUAL P N 897182 MODE THE DESIRED OPERATING MODE IS SELECTED BY THE MODE SWITCH THE REFLUX AND CAUTERY FUNCTIONS ARE AVAILABLE ON DEMAND REGARDLESS OF THE POSITION OF THIS SWITCH WHEN THE DESIRED MODE IS SELECTED THE ASSOCIATED PANEL CONTROLS ARE IMMEDIATELY ENABLED LIMITS FOR THE PARAMETERS ARE DETERMINED BY THE SETTINGS OF THESE CONTROLS VA VAC THE VA VAC CONTROL SETS THE MAXIMUM PRESET LIMIT FOR VACUUM IN THE VA AND VIT MODES THE PRESET IS CONTINUOUSLY VARIABLE OVER THE RANGE 0 500 mmHg THE PRESET VA VAC VALUE
10. 50 1 12V 12 ALL 12V POWER TO FRONT PNL 2 USHIC 3 0 PANEL MODE OUTPUT TO U S POWER 00 30 SURGEON MODE CONTROL 3 VPEDALBB 0 0 3 0 ALL OUTPUT FROM FOOTPEDAL TREADLE POT 4 USREF 0 12 ALL REFERENCE THRESHOLD TIMER ENABLE 5 USPLSE 5 U S PULSE MODE SWITCH U S POSITION ENABLE PULSE 0 ALL OTHER MODES 6 USSTD 5 U S STANDARD MODE SWITCH U S POSITION NON PULSE PULSE SWITCH NON PULSE 7 IAVAC USVAC 0 0 2 5 VA VIT MODES VACUUM LIMIT PRESET VOLTAGE 00 05 U S LO VAC MODE 0 0 0 25 U S HI VAC MODE 8 VACACT 0 0 0 mmHg OUTPUT FROM VACUUM MEASURED VACUUM TRANSDUCER 2 50 500 mmHg MEASURED VACUUM 9 POS2 0 FOOTPEDAL RELEASED VAC METER PRESET ACTUAL SWITCHING 4 5 FOOTPEDAL PAST DETENT 1 10 3 0V 3 0 ALL 3 0V REF OUTPUT TO FRONT PANEL 11 5V 5 ALL 5V POWER TO FRONT PANEL 12 RTN 0 0 ALL REFERENCE GROUND FOR FRONT PANEL DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 37
11. AS BEEN DEPRESSED THE TIME IS DISPLAYED IN MINUTES AND TENTHS OF MINUTES RESET PUSH BUTTON WHEN EITHER U S MODE IS SELECTED DEPRESSING THE RESET PUSH BUTTON WILL RESET THE U S TIME DISPLAY TO 0 0 MINUTES CAUTERY CONTROL THE CAUTERY CONTROL SETS THE CAUTERY POWER DELIVERED TO THE CAUTERY HANDPIECE OVER THE RANGE OF 0 100 FULL PRESET POWER IS DELIVERED TO THE CAUTERY HANDPIECE WHENEVER THE CAUTERY SWITCH ON THE FOOTPEDAL IS DEPRESSED VIT CONTROL THE VIT CONTROL SETS THE CUT RATE OF THE VITRECTOR WITH THE VIT CONTROL IN THE S SINGLE POSITION THE VITRECTOR IS CONTINUOUSLY ENERGIZED WHENEVER THE FOOTPEDAL TREADLE IS DEPRESSED THE CUTTER THEN REMAINS IN THE ENERGIZED POSITION UNTIL THE FOOTPEDAL TREADLE IS RELEASED WHEN THE VIT CONTROL IS ADVANCED CLOCKWISE FROM THE S POSITION THE CUTTER SPEED IS PRESET OVER THE RANGE OF 60 600 CUTS MIN AND ENABLED VIA THE FOOTPEDAL TREADLE DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 5 REAR PANEL CONTROLS REFER TO SPECIFICATIONS CONSOLE FIGURE 2 PAGE 9 OF THE OPERATOR S MANUAL P N 897182 ROCKER SWITCH POWER ON OFF THE ROCKER SWITCH ENABLES THE MAINS INPUT POWER TO THE SYSTEM THE SYSTEM IS COMPLETELY DISABLED WHEN THE ROCKER SWITCH IS IN THE 0 OFF POSITION IN ADDITION THE ROCKER SWITCH ALSO FUNCTIONS AS A CIRCUIT BREAKER RESET SWITCH A MOMENTARY CIRCUIT OVERLOAD THAT TRIGGERS THE PROTECTIVE CIRCUIT BREAKER WILL FORCE THE ROCKER TO TH
12. ASPIRATION LINE IT IS RARE FOR PULLING OF THE CAPSULE DUE TO INCOMPLETE VENTING TO OCCUR IF THE TEST CHAMBER TESTS ARE PROPERLY PERFORMED BEFORE THE SURGERY PLEASE REFER TO THE DGH 9000 DGH 9000 PHACO OPERATOR S MANUAL P N 897182 PAGES 20 TO 23 AND PAGES 30 TO 33 PER PAGES 20 AND 30 WARNING ALWAYS PERFORM THE SYSTEM TEST IMMEDIATELY BEFORE USE ON PATIENT INADEQUATE VENTING IS USUALLY CAUSED BY AN OBSTRUCTION IN THE ASPIRATION SYSTEM THE TWO MOST COMMON SITES ARE THE FRONT PANEL FILTER AND THE HANDPIECE IN USE MED TECH RECOMMENDS THAT THE FILTER BE CHANGED WITH EACH NEW SURGERY ALTHOUGH MANY SURGEONS HAVE BEEN SUCCESSFUL WITH LESS FREQUENT REPLACEMENT AT A MINIMUM THE FILTER SHOULD BE CHANGED AT THE BEGINNING OF EACH SURGERY DAY OR IF ANY VENTING PROBLEMS DURING THE SYSTEM TESTS ARE EXPERIENCED MED TECH DOES NOT SUPPLY TUBING KITS OR FILTERS THE USUAL SOURCE FOR TUBING KITS AND THEIR ASSOCIATED FILTERS IS IPAX INC THEIR PART NUMBER 230T IS FOR THE DISPOSABLE TUBING KITS WITH FILTER INCLUDED PLEASE CONTACT THEM AT 303 781 2444 REUSABLE TUBING KITS WITH SEPARATE FILTER ASSEMBLIES ARE ALSO AVAILABLE THE SECOND COMMON OBSTRUCTION SITE IS THE HANDPIECE IN USE SHOULD THE ASPIRATION PATH BECOME CLOGGED VACUUM RELEASE IS SLOWED TO THE POINT WHERE THERE IS NOT A COMPLETE RELEASE OF VACUUM AT THE HANDPIECE THIS MOST COMMONLY HAPPENS IN THE NARROW PASSAGEWAYS OF THE I A HANDPIECE SHOULD A SURGEON EVER EXPERIENCE CAPSULE PULLING T
13. ASSOCIATED DOCUMENTS tte terret ette ER EH EROR aka Ern Ret PRODUCT DESCRIPTION 2 2 te tie dpt ep tee te peace on tectis SPECIFICATIONS ie eet lima salmi a e qe Ui pO Ue ie eg FRONT PANEL CONTROLS teet ene eee t dh REAR PANEL CONTROLS to certe t ORE ER EE Ura e BV Biel oe FRONT PANEL CONNECTORS tn Orte ett te e REAR PANEL CONNECTORS lis sin bb cobs sa u per t el bee ee EASA etd SIDE PANEL COMPONENTS OPERATIONAL FUNCTIONS AND MODES eere IRRIGATION IRR in roin b e e He p ede e edet IRRIGATION ASPIRATION ULTRASONIC STANDARD U S 8 ULTRASONIC PULSE U S pneter rtt ripetere he ettet VITRECTOM Y VIT riore eoe eid EAUTERY a eo RE OU eni eeu et SYSTEM FUNCTIONAL CHECKOUT REQUIRED TEST EQUIPMENT AND 5 90 9 6 TEST AND REPAIR KIT i erre RE pU RENE IRRIGATION VALVE TEST nette tici tete creep keeb Bel as Irbe VACUUM aie atte aio pie al AIS rs aiment FLUIDICS TESTS iii itte DORUM PET Dena U S TESTS p VIT TESTS esee UR EEUU EE eS CAUTERY TEST 22 2222 282222 He L ini an THEORY OF OPERATION INTRODUCTION ilmutatud aiaiai Bells Gwin Soa eens sall aia ieee FRONT PANEL ASSEMBLY r
14. DE USING A 3 8 IN NUT DRIVER ON THE BACK OF THE ASSEMBLY REMOVE THE HEX HEAD NUTS NEAR THE U S POWER CABLE USING A 5 16 IN NUT DRIVER SEPARATE THE PCB ASSEMBLY FROM THE FRONT PANEL COMPONENT MIS ALIGNMENT AS WELL AS ADHESION AT THE DISPLAY OVERLAY INTERFACE WILL IMPEDE REMOVAL BOTH THE SWITCH EXTENDERS AND THE BLACK DISPLAY MASK FILM PIECES MAY ADHERE TO THE OVERLAY IF SO THEY CAN BE LEFT IN PLACE SIDE PANEL DISASSEMBLY MOUNTED TO THE RIGHT SIDE PANEL ARE THE IRRIGATION PINCH VALVE THE TRANSDUCER SENSE VENT ASSEMBLY AND THE PERISTALTIC PUMP ASSEMBLY REMOVE THE PINCH VALVE BY REMOVING THE THREE 3 CAP HEAD SCREWS SECURING IT TO THE PANEL USING A 3 32 IN ALLEN WRENCH REMOVE THE TRANSDUCER SENSE VENT BY REMOVING THE TWO PHILLIPS HEADS SCREWS RECESSED IN THE PLASTIC VACUUM CHAMBER ASSEMBLY ONE SCREW IS VISIBLE AT THE TOP LEFT CORNER OF THE ASSEMBLY THE OTHER SCREW IS RECESSED IN THE ROUND HOLE BELOW THE VENT SOLENOID REMOVE THE PERISTALTIC PUMP ASSEMBLY BY FIRST REMOVING THE PUMP ROLLER HEAD USING A 5 64 IN ALLEN WRENCH REMOVE THE MOTOR BY REMOVING THE THREE 3 SMALLER CAP SCREWS ON THE PUMP PLATE USING A 3 32 IN ALLEN WRENCH REMOVE THE PUMP PLATE FROM THE SIDE PLATE BY REMOVING THE THREE 3 LARGER CAP SCREWS USING A 7 63 IN ALLEN WRENCH U S CONTROLLER DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 24 BEFORE REMOVING THE U S CONTROLLER BOARD INSURE THAT ALL INTERCONNECT CABLES HAVE BEEN UNPLUGGED THEN REMOVE
15. DGH TECHNOLOGY INC DGH 9000 DGH 9000 PHACO SERVICE MANUAL DGH TECHNOLOGY INC 110 Summit Drive Exton PA 1934 610 594 9100 610 594 0390 FAX IMPORTANT NOTICE DGH TECHNOLOGY INC IS CONTINUALLY IMPROVING THE QUALITY AND PERFORMANCE OF THE EQUIPMENT THAT IT MANUFACTURES CHANGES MAY HAVE BEEN MADE TO THE EQUIPMENT AFTER THE PUBLICATION OF THIS SERVICE MANUAL ACCORDINGLY DGH TECHNOLOGY INC MAKES NO WARRANTIES EITHER EXPRESSED OR IMPLIED THAT THE INFORMATION CONTAINED IN THIS SERVICE MANUAL IS ACCURATE AND COMPLETE IN ALL CIRCUMSTANCES THE USER OF THIS MANUAL ASSUMES ALL RISK FOR ANY SERVICE PERFORMED ON THE DGH 9000 DGH 9000 PHACO COMMENTS ON OR CORRECTIONS TO THIS MANUAL SHOULD BE ADDRESSED TO DGH TECHNOLOGY INC TECHNICAL SUPPORT 23042 ALCALDE SUITE A EXTON CA 92653 DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE i SERVICE MANUAL REVISION RECORD LIST OF EFFECTIVE PAGES WHEN RECEIVING UPDATES TO THIS SERVICE MANUAL PLEASE STAPLE THE UPDATED PAGE OVER THE RESPECTIVE EXISTING PAGE PAGE NO CHANGE NO CHANGE DATE TABLE OF CONTENTS DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE ii SECTION IMPORTANT NOTICE pe Dm ep reet ipe ertet ds SERVICE MANUAL REVISION RECORD sns usu nennen eene rentrer nnne TABLE OF CONTENTS Uno nO eb ee EL ines PRODUCT INFORMATION CONTENTS ua tetto ca I He o RE EE ti teme an u td MANVALINTENT eee i ee gU beh
16. DPIECE GROUND GROUND FAULT SIGNAL OK NOT USED 5 HANDPIECE GROUND OPEN 11 SW2 0 FOOTPEDAL RELEASED FOOTPEDAL CONTROLLED 4 5 FOOTPEDAL PAST ASP VIT ENABLE DETENT 1 12 CASE 0 ALL CHASSIS GROUND 13 SURG 0 SURGEON MODE OUTPUT FROM CONTROL 5 PANEL MODE SWITCH 14 CAUT 5 CAUTERY SWITCH OUTPUT FROM FOOTPEDAL RELEASED CAUT SWITCH 0 CAUTERY SWITCH DEPRESSED DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 34 CONN PIN SIGNAL M MENT V CONDITION DESCRIPTION JA 1 12V 12 ALL 12V POWER TO XDUCER VENT 2 5V 5 ALL 5V POWER TO XDUCER VENT 3 5 5 ALL 5V POWER TO XDUCER VENT 4 PSRTN 0 ALL POWER GROUND RETURN 5 PSRTN 0 ALL POWER GROUND RETURN 6 SW2 0 FOOTPEDAL RELEASED FOOTPEDAL CONTROLLED ASP VIT ENABLE 4 5 FOOTPEDAL PAST DETENT 1 7 5 0V 5 0 ALL 5 0V REFERENCE TO XDUCER 8 RTN 0 0 ALL REFERENCE GROUND FOR XDUCER 9 IRRB 0 IRR MODE INHIBITS VENT IN IRR MODE 5 ALL EXCEPT IRR MODE 10 VACACT 0 0 0 mmHg MEASURED OUTPUT FROM VACUUM VACUUM TRANSDUCER 2 50 500 mmHg MEASURED VACUUM 15 1 HNDPCEHI 0 U S POWER 0 U S POWER OUTPUT TO U S HANDPIECE 1000 P P U S POWER 100 40 kHz SINE WAVE 2 NO CONNECTION 3 HNDPCELO 0 ALL RETURN FOR U S HANDPIECE 4 NO CONNECTION J6 1 IRRSOLI 0 IRR SOLENOID IRR SOLENOID RELEASED RETURN 1 5 IRR SOLENOID ENERGIZED 2 IRRSOL2 0 IRR SOLENOID IRR SOLENOID RELEASED POWER 1 24 IRR SOLENOID 24V INITIAL ENERGIZED RECT WAVE 122 uS 12 uS ON OFF J7 1 150 0 12 TEST SIGNAL SQ WAVE 40 kHz CURRENT PHASE 2 E
17. E 0 OFF POSITION THE ROCKER SWITCH MUST BE SET TO 1 ON TO RESET THE CIRCUIT BREAKER REPEATED AUTOMATIC TRIGGERING OF THE PROTECTIVE CIRCUIT BREAKER TO THE 0 OFF POSITION IS AN INDICATION OF SYSTEM MALFUNCTION REQUIRING SERVICE VOLUME CONTROL VACUUM FEEDBACK THE VOLUME CONTROL SETS THE VOLUME OF THE AUDIBLE VACUUM FEEDBACK TONE WHEN THE FOOTPEDAL TREADLE IS DEPRESSED THE SYSTEM EMITS AN AUDIBLE TONE WITH A PITCH THAT RISES WITH INCREASING VACUUM CONTROL SWITCH THE CONTROL SWITCH CAN BE SET FOR PANEL OR SURGEON MODE IN THE PANEL MODE THE CONTROLLED FUNCTION OPERATES AT THE PRESET LIMIT WHENEVER THE FUNCTION IS ENABLED BY THE FOOTPEDAL IN THE SURGEON MODE THE CONTROLLED FUNCTION IS CONTINUOUSLY VARIABLE VIA THE FOOTPEDAL REFER TO SPECIFICATIONS FOOTPEDAL amp CONTROL SWITCH FIGURE 3 PAGE 10 OF THE OPERATOR S MANUAL P N 897182 FOR FULL FOOTPEDAL CONTROL PARAMETERS DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 6 FRONT PANEL CONNECTORS REFER TO SPECIFICATIONS CONSOLE FIGURE 2 PAGE 9 OF THE OPERATOR S MANUAL P N 897182 U S HANDPIECE CONNECTOR THE U S HANDPIECE CONNECTOR LOCATED BELOW THE PULSE PUSH BUTTON IS A POLARIZED AND INTERLOCKING CONNECTOR THAT MATES WITH THE CONNECTOR OF THE U S HANDPIECE TO BE ENGAGED THE CONNECTORS MUST BE ROTATED UNTIL THE RED POLARIZING MARKS ARE DIRECTLY OPPOSED ONCE THE CONNECTORS ARE FULLY ENGAGED THE SLEEVE OF THE EXTERNAL CONNECTOR MUST BE SLID AWAY
18. EIGHT OF THE IRRIGATION BOTTLE IN REFERENCE TO THE HEIGHT OF THE PATIENTS EYE THE EYE SHOULD BE AT THE SAME HEIGHT AS THE VACUUM SENSE VENT PORT THEREFORE TO INCREASE OR DECREASE THE IRRIGATION PRESSURE THE IRRIGATION BOTTLE IS RAISED OR LOWERED RESPECTIVELY THE IRRIGATION TUBING MUST BE PRIMED PURGED OF ALL AIR BEFORE USE IRRIGATION ASPIRATION MODE THE IRRIGATION ASPIRATION MODE IS SELECTED BY SETTING THE MODE SWITCH TO VA THE VA MODE PROVIDES SIMULTANEOUS IRRIGATION AND ASPIRATION IRRIGATION IS ENABLED AS SOON AS THE FOOTPEDAL TREADLE IS DEPRESSED AND THE ASPIRATION IS ENABLED ONCE THE FOOTPEDAL TREADLE IS ADVANCED PAST DETENT 1 PLEASE REFER TO SPECIFICATIONS FOOTPEDAL amp CONTROL SWITCH FIGURE 3 PAGE 10 OF THE OPERATOR S MANUAL P N 897182 THE PRESET VACUUM LIMIT CAN BE SET OVER THE RANGE OF 0 500 mmHg THE ASPIRATION TUBING MUST BE PRIMED PURGED OF ALL AIR BEFORE USE IN THE PANEL CONTROL MODE ASPIRATION IS ENABLED AT THE FULL PRESET FLOW RATE IN THE SURGEON CONTROL MODE THE FLOW RATE CAN BE LINEARLY CONTROLLED VIA THE FOOTPEDAL TREADLE AS THE FOOTPEDAL TREADLE IS RELEASED FULL VENTING OF THE ASPIRATION VACUUM OCCURS AT THE DETENT 1 POINT WHERE ASPIRATION IS DISABLED DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 10 ULTRASONIC STANDARD MODE THE ULTRASONIC STANDARD MODE IS SELECTED BY SETTING THE MODE SWITCH TO EITHER U S LO VAC OR U S HI VAC IN THESE MODES THE IRRIGATION AND ASPIRATION FUNCTION
19. ELD AIRPORT RD CHESTERFIELD MI 63005 TEL 314 530 1440 FAX 314 530 1143 KIRWIN SURGICAL KIRWIN 83 E WATER ST ROCKLAND MA 02370 TEL 617 878 2706 FAX 617 871 2816 DESCRIPTION TUBING KIT REUSABLE FILTER 5u FITTING LUER COUPLER U S TIP RND 30 WRENCH I A HANDPIECE ASPIRATION TIP 3mm ASPIRATION TIP 45 3mm VITRECTOR IRRIGATION SLEEVE VIT CABLE CAUTERY FORCEPS TRAY FISHER SCIENTIFIC FISHER 711 FORBES AVENUE PITTSBURGH PA 15219 4785 TEL 412 562 8300 FAX 800 926 1166 ORDERS MICROSURGICAL TECHNOLOGY MST 8415 154th AVENUE NE REDMOND WA 98052 TEL 206 556 0544 FAX 206 556 0437 RILEY MEDICAL INC RILEY 27 WRIGHTS LANDING AUBURN ME 04210 TEL 207 786 2775 FAX 207 786 5553 DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 13 MFR VENDOR IPAX FISHER COLE PALMER SYN SYN MST MST MST HSI HSI KIRWIN KIRWIN RILEY MFR VENDOR P N KPE220TS DDR50T2550 06359 42 110 010 30 110 5 TT 93100 TT 93301 TT 93303 U 506P 30 HS32 516 10 5000 10 3000 1025 COLE PALMER INSTRUMENT CO COLE PALMER 7425 NORTH OAK PARK AVE NILES IL 60714 TEL 708 647 7600 800 323 4340 FAX 708 647 9660 HS INTERNATIONAL CO INC HSI 5040 COMMERCIAL CIRCLE UNIT A CONCORD CA 94520 TEL 510 674 1515 FAX 510 674 1509 SYSTEM FUNCTIONAL CHECKOUT REQUIRED TEST EQUIPMENT AND TOOLS THE TEST EQUIPMENT TOOLS AND SUPPLIES REQUIRED TO PERFORM THE TASKS PRESENTED
20. ELIVERED TO THE U S HANDPIECE IS PULSED AT A 10 Hz RATE DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 11 VITRECTOMY MODE THE VITRECTOMY MODE IS SELECTED BY SETTING THE MODE SWITCH TO THE VIT POSITION IN THIS MODE A PNEUMATIC PRESSURE ATMOSPHERE SOURCE IS AVAILABLE TO OPERATE A PNEUMATIC GUILLOTINE VITRECTOR VITRECTOMY IS ENABLED AT THE POINT PAST FOOTPEDAL TREADLE DETENT 1 WHEN ASPIRATION IS ALSO ENABLED ASPIRATION VACUUM LIMIT IS PRESET BY THE I A VAC CONTROL AND ASPIRATION IS FIXED AT THE FULL PRESET VALUE IN THE PANEL CONTROL MODE THE ASPIRATION FLOW RATE IS FIXED AT THE PRESET VALUE AND IN THE SURGEON CONTROL MODE THE FLOW RATE IS LINEARLY VARIABLE PAST DETENT 1 OF THE FOOTPEDAL TREADLE THE VIT CONTROL SETS THE CUT RATE OF THE VITRECTOR WITH THE VIT CONTROL IN THE S SINGLE POSITION THE VITRECTOR IS CONTINUOUSLY ENERGIZED WHENEVER THE FOOTPEDAL TREADLE IS DEPRESSED THE CUTTER THEN REMAINS IN THE ENERGIZED POSITION UNTIL THE FOOTPEDAL TREADLE IS RELEASED WHEN THE VIT CONTROL IS ADVANCED CLOCKWISE FROM THE S POSITION THE CUTTER SPEED IS PRESET OVER THE RANGE OF 60 600 CUTS MIN AND ENABLED VIA THE FOOTPEDAL TREADLE CAUTERY MODE THE CAUTERY CONTROL SETS THE CAUTERY POWER DELIVERED TO THE CAUTERY HANDPIECE OVER THE RANGE OF 0 100 FULL PRESET POWER IS DELIVERED TO THE CAUTERY HANDPIECE WHENEVER THE CAUTERY SWITCH MOUNTED ON THE LEFT INSIDE OF THE HOOD ON THE FOOTPEDAL IS DEPRESSED THE CAUTERY P
21. EVER CAUTERY IS ENABLED POWER SUPPLY ASSEMBLY THE POWER SUPPLY ASSEMBLY INCORPORATES AN AUTOMATIC MAINS VOLTAGE SELECTION CIRCUIT THAT ALLOWS THE DGH 9000 TO BE IMMEDIATELY CONNECTED TO ANY 50 60 Hz 100 115 220 230 240 VAC POWER SOURCE THE POWER ON OFF ROCKER SWITCH INCORPORATES AN INPUT PROTECTION CIRCUIT BREAKER NO FUSES ARE USED IN THIS OR ANY OTHER ASSEMBLY IN THE DGH 9000 THE DC OUTPUTS OF THE POWER SUPPLY ARE 25V 12V 5V SV AND 12V THE OUTPUTS ARE SHORT CIRCUIT LIMITED AND ARE WELL REGULATED DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 21 MAINTENANCE INTRODUCTION THE DGH 9000 IS DESIGNED TO BE VIRTUALLY MAINTENANCE FREE REQUIRING ONLY ROUTINE CLEANING BECAUSE BSS IRRIGATING SOLUTION IS CORROSIVE AND ELECTRICALLY CONDUCTIVE IT IS IMPORTANT TO REMOVE BSS RESIDUE IMMEDIATELY AFTER USE THE IRRIGATION SOLENOID AND PERISTALTIC PUMP MUST BE KEPT FREE OF BSS AND SILICONE TUBING RESIDUE AS WELL AS OTHER DEBRIS TO INSURE THAT NO DEBRIS WILL INTERFERE WITH THE MECHANICAL ACTION OF THESE DEVICES REQUIRED TOOLS AND SUPPLIES AS NO ADJUSTMENTS OR LUBRICATIONS ARE REQUIRED TO MAINTAIN PERFORMANCE ONLY NORMAL CLEANING SUPPLIES ARE NECESSARY TO PERFORM MAINTENANCE TYPICALLY THESE WOULD INCLUDE ISOPROPYL ALCOHOL IPA LOW LINT WIPERS AND COTTON SWABS THE USE OF TWEEZERS OR FORCEPS WILL ALLOW EASY REMOVAL OFF FOREIGN MATERIAL FROM THE MECHANISMS ROUTINE MAINTENANCE IMMEDIATELY AFTER USE THE UN
22. FROM THE FRONT PANEL IN ORDER TO REMOVE THAT CONNECTOR FROM THE PANEL CONNECTOR VITRECTOR CONNECTOR THE VITRECTOR CONNECTOR IS LOCATED BELOW THE VIT CONTROL IT IS A STANDARD TWIST LOCK FEMALE LUER CONNECTOR WHICH MATES WITH THE MALE LUER CONNECTOR OF THE VITRECTOR CAUTERY HANDPIECE CONNECTOR THE CAUTERY HANDPIECE CONNECTOR IS A FEMALE BANANA JACK PAIR THAT MATES WITH THE MALE BANANA PLUGS OF THE CAUTERY HANDPIECE THE CAUTERY POWER OUTPUT IS NON POLARIZED AS IS THE CONNECTOR DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 7 REAR PANEL CONNECTORS REFER TO SPECIFICATIONS CONSOLE FIGURE 2 PAGE 9 OF THE OPERATOR S MANUAL P N 897182 UNIVERSAL IEC POWER INPUT THE POWER INPUT CONNECTOR IS A FEMALE CONNECTOR THAT MATES WITH POWER CORDS THAT ARE TERMINATED WITH THE STANDARD IEC POWER OUTPUT PLUG THE POWER CABLE MUST BE OF HOSPITAL GRADE HOSPITAL GRADE CORDS ARE NORMALLY INDICATED BY THE PRESENCE OF A GREEN COLORED DOT ON THE MALE WALL PLUG OF THE POWER CABLE FOOTPEDAL CONNECTOR THE FOOTPEDAL CONNECTOR IS A FEMALE CIRCULAR CONNECTOR THAT MATES WITH THE MALE CIRCULAR CONNECTOR ATTACHED TO THE FOOTPEDAL THIS CONNECTOR HAS SEVERAL POLARIZING TABS WITH THE MAIN WIDE TAB AT THE 12 O CLOCK VERTICAL POSITION THE CONNECTOR IS LOCKED INTO PLACE BY ROTATING THE CAPTIVE THREADED COLLAR OF THE MALE CONNECTOR DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 8 SIDE PANEL COMPONENTS IRR
23. HAT A ZERO VACUUM READING IS DEPENDENT UPON THE HANDPIECE BEING HELD AT THE SAME HEIGHT AS THE VACUUM SENSE VENT PORT DUE TO THE EFFECT OF GRAVITY ON THE FLUID IN THE ASPIRATION TUBING THE VENTED VACUUM READING WILL BE SHIFTED WITH CHANGES IN VERTICAL POSITIONING OF THE HANDPIECE DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 19 U S CONTROLLER ASSEMBLY THE U S CONTROLLER BOARD CONTAINS THE MAJORITY OF THE ANALOG AND DIGITAL LOGIC AND CONTROL ELEMENTS NECESSARY TO CONTROL THE COMPLETE SYSTEM IN ADDITION THE U S CONTROLLER INCORPORATES THE U S CAUTERY IRRIGATION SOLENOID AND MOTOR DRIVERS THE ANALOG AND DIGITAL CONTROL SYSTEMS HAVE AS INPUTS THE FRONT AND BACK PANEL CONTROLS THE VACUUM TRANSDUCER AND THE FOOTPEDAL THE DIGITAL FUNCTIONS ARE 5V LOGIC THE ENABLED CONDITION BEING DENOTED BY THE PRESENCE OR ABSENCE OF THE NOT OPERATOR ON THE SIGNAL DESIGNATOR AS AN EXAMPLE A CONTROL LINE DESIGNATED VIT HAS THE PRESENCE OF THE NOT OPERATOR AND THUS THE VIT CONTROL INPUT IS NEGATIVE TRUE THEREFORE VIT IS ENABLED WHEN THAT INPUT IS LO 0 V BY CONTRAST THE DESIGNATOR SW DOES NOT CONTAIN THE NOT OPERATOR AND THUS THE SW2 CONTROL INPUT IS POSITIVE TRUE AND IS ENABLED WHEN THAT INPUT IS HI 5V THE U S DRIVER IS AN AUTOTUNED 40 kHz GENERATOR THAT DERIVES THE TUNING FEEDBACK SIGNAL FROM THE ELECTRICAL CHARACTERISTICS OF THE U S HANDPIECE THUS FOR THE U S POWER OUTPUT TO BE STABLE T
24. HAT IS OFTEN REFERRED TO AS THE STEALTH TIP THE STEALTH TIP IS DIFFICULT TO TIGHTEN THE TOOL THAT IS SUPPLIED TO TIGHTEN THE STEALTH TIP HAS A SHORT LIFETIME AND CAN BE DAMAGED AFTER ONLY ONE USE THE RESULT OF THE USE OF A DAMAGED TOOL IS A PARTIALLY TIGHTENED TIP THAT WILL LOOSEN UNDER U S POWER AND PRESENT THE SYMPTOM OF A BAD HANDPIECE OR PHACO MACHINE FOR PURPOSES OF TESTING IT IS MUCH BETTER TO USE THE SQUARE HUB TYPE OF TIP WHEN IN DOUBT OF THE QUALITY OF THE TIP WRENCH THE TIP CAN BE WELL TIGHTENED USING A PAIR OF PLIERS OR PERHAPS FORCEPS USING CARE NOT TO GRASP AND THEREFORE DAMAGE THE THIN WALLED HANDPIECE CASE OR THE TIP ITSELF IF A KNOWN GOOD HANDPIECE AND PHACO MACHINE ARE AVAILABLE THE BEST METHOD OF TROUBLESHOOTING IS TO EXCHANGE BACK AND FORTH BETWEEN THE KNOWN GOOD DEVICE AND THE SUSPECTED DEVICE TO TEST FOR A FAILED HANDPIECE TIGHTEN A SQUARE HUB TIP TO THE SUSPECTED DEVICE PREPARE A KNOWN GOOD HANDPIECE SIMILARLY USING THE KNOWN GOOD PHACO MACHINE EXCHANGE THE TWO HANDPIECES ON THAT PHACO MACHINE BACK AND FORTH ENOUGH TIMES TO VERIFY THAT THE PROBLEM FOLLOWS THE SUSPECTED DEVICE TO PREVENT TIP RELATED PROBLEMS ALWAYS RE TIGHTEN THE TIP ON ANY HANDPIECE THAT APPEARS TO WORK IMPROPERLY WHEN CHANGING HANDPIECES ALWAYS TURN OFF THE PHACO POWER BEFORE THE CHANGE AND ALWAYS HAVE THE REPLACEMENT HANDPIECE CONNECTOR PLUGGED INTO THE CONSOLE CONNECTOR BEFORE APPLYING POWER AT THE REAR PANEL P
25. HE MAJOR CALIBRATION POINTS OF THE VIT KNOB BY CHECKING THE COUNT AGAINST THE CALIBRATED TIMEPIECE CONNECT THE VITRECTOR LISTED IN THE ACCESSORIES SECTION OF THIS MANUAL TO THE VIT CONNECTOR WHILE KEEPING THE TIP OF THE VITRECTOR IMMERSED IN WATER AT ALL TIMES OBSERVE THE VITRECTOR ASPIRATION PORT THE PORT SHOULD BE SEEN TO OPEN AND CLOSE WITH EACH PNEUMATIC CYCLE EVEN AT THE HIGHEST CUT RATE 600 CUTS MIN CAUTERY TEST CONNECT THE 600 OHM CAUTERY TEST LOAD RESISTOR TO THE CAUTERY BANANA JACKS CONNECT THE OSCILLOSCOPE TO THE RESISTOR IN DIFFERENTIAL MODE ENABLE CAUTERY BY DEPRESSING THE CAUTERY FOOTSWITCH AT THE 100 POWER LEVEL THE OUTPUT WAVEFORM MUST BE 160 V P P H 15 AT A FREQUENCY OF 1 0 MHz 15 AT THAT POWER LEVEL THE RESISTOR WILL DISSIPATE APPROXIMATELY 10 WATTS AND WILL BEGIN TO NOTICEABLY INCREASE IN TEMPERATURE THIS HEATING IS NORMAL AND IS AN INDICATION THAT DIATHERMY ENERGY IS BEING TRANSMITTED TO THE RESISTOR LOAD WHILE MAINTAINING CAUTERY ENABLE DECREASE THE CAUTERY CONTROL SETTING TO 0 THE VOLTAGE ACROSS THE CAUTERY LOAD RESISTOR MUST DECREASE CONTINUOUSLY TO LESS THAN 8 V P P AT THE 0 SETTING DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 17 THEORY OF OPERATION INTRODUCTION THE DGH 9000 IS DESIGNED IN MODULAR FORM AND REPAIR AND REPLACEMENT ARE TO BE ACCOMPLISHED ONLY AT THE MODULAR LEVEL THEREFORE THE THEORY OF OPERATION OF THE DGH 9000 EXTENDS ONLY TO THE MODULAR LEVEL
26. HE U S HANDPIECE MUST BE ELECTRICALLY REPRESENTATIVE OF A NORMAL FUNCTIONING HANDPIECE SITUATIONS SUCH AS A LOOSE U S TIP INCORRECT U S TIP SHORTED HANDPIECE OR AN INCORRECT MODEL HANDPIECE WILL RESULT IN A LACK OF FREQUENCY STABILITY WHICH NEGATIVELY AFFECTS TIP DISPLACEMENT THE U S DRIVER INCORPORATES A GROUND FAULT DETECTION CIRCUIT THAT DISABLES ALL U S POWER TO THE U S HANDPIECE IF THE CASE OF THE HANDPIECE LOSES CONNECTION TO THE CHASSIS SAFETY GROUND THIS CONDITION CAN BE MONITORED AT THE GFAULT OUTPUT OF THE U S CONTROLLER AT J3 10 A HIGH LEVEL AT THIS PIN INDICATES THAT A GROUND FAULT CONDITION HAS BEEN IDENTIFIED AND THAT THE U S DRIVER IS DISABLED THE CAUTERY DRIVER IS A 1 MHz CONSTANT VOLTAGE And ISOLATED BIPOLAR SQUARE WAVE GENERATOR THE ONLY CONTROLS TO THIS GENERATOR ARE THE CAUTERY ENABLE FOOTPEDAL SWITCH AND THE CAUTERY POWER LEVEL FRONT PANEL CONTROL THE IRRIGATION SOLENOID DRIVER IS CONTROLLED BY THE FOOTPEDAL ONLY THE IRRIGATION SOLENOID IS ENERGIZED WHENEVER THE FOOTPEDAL TREADLE IS DEPRESSED INITIALLY THE IRRIGATION SOLENOID IS DRIVEN BY 24 VDC TO INSURE PULL IN ONCE THE SOLENOID IS ENGAGED THE IRRIGATION SOLENOID CURRENT IS REGULATED BY A PULSE WIDTH MODULATION DRIVER THE MOTOR DRIVER INCORPORATES A BI DIRECTIONAL DC MOTOR CONTROLLER THE NEGATIVE INPUT TO THE MOTOR IS GROUNDED AND BOTH DIRECTIONAL AND SPEED CONTROL ARE ACHIEVED BY THE POLARITY AND LEVEL OF THE VOLTAGE APPLIED TO THE PERMANENT MAGNET MOTOR
27. HE VACUUM IN THE ASPIRATION LINE CAN ALWAYS BE RELEASED BY OPENING THE PERISTALTIC PUMP LATCH OR BY REMOVING THE TEE FITTING FROM THE FILTER IF THE VACUUM CAUSING PULLING IS NOT IMMEDIATELY AND COMPLETELY VENTED THE HANDPIECE IS MOST CERTAINLY CLOGGED AS THIS IS NOT A USUAL CONDITION THE CLEANING PROCEDURE FOR THE HANDPIECES SHOULD BE REVIEWED IT IS POSSIBLE THOUGH UNLIKELY THAT THE DGH 9000 VENTING CYCLE MAY BE MALFUNCTIONING SHOULD THIS BE SUSPECTED PERFORM THE SYSTEM TEST TEST CHAMBER TEST USING A HANDPIECE THAT IS KNOWN TO BE FREE FROM DEBRIS AND UNCLOGGED AND AN UNUSED FILTER IF DEFLATION OF THE TEST CHAMBER IS EXPERIENCED AND CANNOT BE CORRECTED BY NORMAL ADJUSTMENT OF THE IRRIGATION BOTTLE HEIGHT A TECHNICIAN USING A VACUUM GAUGE SUBSTITUTED FOR THE HANDPIECE SHOULD TEST THE DGH 9000 IF VENTING TO ZERO VACUUM LEVEL IS NOT EXPERIENCED UPON RELEASE OF THE FOOTPEDAL THE UNIT SHOULD BE RETURNED TO MED TECH FOR REPAIR AND CALIBRATION DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 28 INADEQUATE U S POWER IN MANY CASES A GOOD U S HANDPIECE OR A GOOD PHACO MACHINE CAN APPEAR BAD DUE TO PROBLEMS ASSOCIATED WITH A LOOSE PHACO TIP ATTACHED TO THE U S HANDPIECE UNDER THE SEVERE VIBRATION OF U S POWER THE TIP CAN FUNCTION NORMALLY FOR A SHORT DURATION BEFORE THE TIP IS PARTIALLY LOOSENED BY THE VIBRATION PHACO TIPS ARE NORMALLY SUPPLIED IN TWO DIFFERENT MODELS THE SQUARE HUB TYPE AND THE CONICAL HUB TYPE T
28. HE VACUUM PRESET LIMIT IS REACHED IF THE VACUUM PRESET LIMIT IS REACHED THE PUMP WILL STOP AND REMAIN STOPPED UNTIL THE VACUUM IN THE ASPIRATION TUBING DROPS BELOW THE PRESET LIMIT INTERMITTENT TURNING OF THE PERISTALTIC PUMP IS AN INDICATION OF LOW FLOW POSSIBLY CAUSED BY AN OCCLUDED HANDPIECE ASPIRATION PORT OR A SMALL AIR LEAK IN THE ASPIRATION SYSTEM DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 9 OPERATIONAL FUNCTIONS AND MODES AS DESCRIBED ABOVE OPERATION MODES ARE SELECTED VIA THE MODE SWITCH THEY ARE ENABLED VIA THE FOOTPEDAL WHEN THE FOOTPEDAL TREADLE IS IN THE RELEASED POSITION THE SYSTEM IS IN STANDBY AND NO MODES ARE ENABLED IN THE PANEL MODE WHEN EITHER ASPIRATION VACUUM OR IRRIGATION PRESSURE ARE ENABLED VIA THE FOOTPEDAL THE SYSTEM AUTOMATICALLY OPERATES AT THE PRESET LIMITS PROGRAMMED AND THESE LIMITS ARE DISPLAYED AT THE FRONT PANEL IN THE SURGEON MODE THE LINEAR CONTROL OF SOME OF THE OPERATING PARAMETERS IS PROVIDED VIA THE FOOTPEDAL PLEASE REFER TO SPECIFICATIONS FOOTPEDAL amp CONTROL SWITCH FIGURE 3 PAGE 10 OF THE OPERATOR S MANUAL P N 897182 THE FOLLOWING DESCRIPTIONS PRESENT A BRIEF OVERVIEW OF THE FUNCTIONING OF THE AVAILABLE MODES IRRIGATION MODE THE IRRIGATION MODE IS SELECTED BY SETTING THE MODE SWITCH TO IRR THE IRR MODE IS ENABLED AS SOON AS THE FOOTPEDAL TREADLE IS DEPRESSED AND IT STAYS ENABLED THROUGHOUT THE TREADLE TRAVEL THE IRRIGATING PRESSURE IS A FUNCTION OF THE H
29. IGATION PINCH VALVE THE IRRIGATION PINCH VALVE CONTROLS THE ON OFF FLOW OF THE BSS IRRIGATING SOLUTION THE IRRIGATION TUBING CAN BE THREADED THROUGH THE IRRIGATION PINCH VALVE WITHOUT ENABLING THE VALVE BY LIGHTLY STRETCHING THE TUBING WHILE WORKING THE TUBING UP AND DOWN IN THE VALVE TUBING SLOT DEPRESSING THE FOOTPEDAL TREADLE OPENS THE PINCH VALVE ALLOWING FOR EASIER LOADING OF THE TUBING AFTER INSERTION THE TUBING SHOULD BE VISUALLY CHECKED TO ENSURE THAT IT IS PROPERLY CENTERED IN THE TUBING SLOT OF THE PINCH VALVE VACUUM SENSE VENT PORT THE VACUUM SENSE VENT PORT IS CONNECTED TO THE ASPIRATION TUBING VIA THE TUBING SET VACUUM FILTER THE PORT SENSES THE VACUUM LEVEL PRESENT IN THE ASPIRATION TUBING AND SIGNALS THE PERISTALTIC PUMP TO STOP AND REMAIN STATIONARY WHENEVER THE ACTUAL VACUUM LEVEL EQUALS OR EXCEEDS THE PRESET VALUE IN ADDITION THE VACUUM SENSE VENT PORT IS USED FOR VENTING OF THE ASPIRATION VACUUM UPON FOOTPEDAL TREADLE RELEASE UPON THE ENABLING OF THE VENT CYCLE THE INTERNAL VENT SOLENOID ALLOWS ATMOSPHERIC AIR TO PASS THROUGH THE FILTER INTO THE ASPIRATION TUBING IMMEDIATELY AND COMPLETELY VENTING ALL VACUUM IN THE ASPIRATION TUBING PERISTALTIC PUMP THE PERISTALTIC PUMP IS A NON CONTACT QUASI CONSTANT DISPLACEMENT PUMP THAT CONTROLS ASPIRATION FLOW WHEN THE HANDPIECE PORT IS OCCLUDED VACUUM IN THE ASPIRATION TUBING RISES WITH THE CONTINUING ROTATION OF THE PUMP UNTIL THE OCCLUSION IS BROKEN OR T
30. IT SHOULD BE WIPED FREE OF ANY SPILLED BSS THE MECHANISMS INSPECTED AND CLEANED OF ANY FOREIGN MATERIAL AND DEBRIS AND THE UNIT WIPED CLEAN BY THE USE OF IPA MOISTENED WIPERS DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 22 SERVICE INTRODUCTION THE DGH 9000 IS DESIGNED IN MODULAR FORM AND REPAIR AND REPLACEMENT ARE INTENDED TO BE ACCOMPLISHED ONLY AT THE MODULAR LEVEL REPLACEMENT MODULES ARE AVAILABLE FROM THE MANUFACTURER ON AN OVERNIGHT SHIPMENT BASIS BECAUSE THE DGH 9000 CONTAINS NO USER SERVICEABLE PARTS AND THE CIRCUITRY IS EASILY SUBJECT TO MISHANDLING SERVICE SHOULD ONLY BE ATTEMPTED BY QUALIFIED SERVICE PERSONNEL SERIOUS ELECTRICAL SHOCK HAZARD IS PRESENT WHEN THE COVER IS REMOVED WHILE THE DEVICE IS CONNECTED TO THE POWER SOURCE EVEN WHEN THE POWER ON OFF ROCKER SWITCH IS IN THE 0 OFF POSITION REQUIRED TEST EQUIPMENT TOOLS AND SUPPLIES ONLY COMMONLY AVAILABLE TEST EQUIPMENT TOOLS AND SUPPLIES ARE NEEDED TO SERVICE THE DGH 9000 RECOMMENDATIONS FOR TEST EQUIPMENT TOOLS AND SUPPLIES ARE LISTED ON PAGE 14 FOR THE TEST AND REPAIR KIT ITEMS OTHER THAN THOSE LISTED MAY BE USED IF THEY MEET OR EXCEED THE PERFORMANCE OF THE ITEMS LISTED DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 23 DISASSEMBLY CASE CHASSIS DISCONNECT ALL EXTERNAL CONNECTIONS INCLUDING FOOTPEDAL AND POWER CORD REMOVE THE CAP SCREW AT THE LOWER REAR CORNER OF EACH SIDE PLATE USING A 7 64 IN ALLEN WRENCH REMOVE THE FOUR 4
31. LOAD AN AIR FILLED TUBING SET NORMALLY INSURING THAT ALL FITTINGS ARE TIGHT AND THE PUMP ARM IS TIGHTLY LATCHED THE HANDPIECE NEED NOT BE CONNECTED 2 SET THE MODE SWITCH TO USS U S VAC TO 120 RATE TO 40 3 FULLY DEPRESS THE FOOTPEDAL THE ASPIRATION PUMP SHOULD RUN CONTINUOUSLY 4 PINCH OFF THE ASPIRATION TUBING AT THE HANDPIECE END THE PUMP SHOULD STOP RELATIVELY QUICKLY AND REMAIN STOPPED FOR AT LEAST TEN 10 SECONDS IF THE PUMP CONTINUES TO RUN OR RAPIDLY STARTS AND STOPS THERE IS AN AIR LEAK IN THE SYSTEM THAT IS RESPONSIBLE FOR A REDUCTION IN VACUUM LEVEL POSSIBLE SOURCES OF AIR LEAK TUBING BADLY WORN OR A CUT IN THE TUBING INCORRECT TUBING OR TUBING DIAMETER PUMP NOT ENGAGED OR TIGHTLY ADJUSTED LEAK IN THE CONNECTIONS FITTINGS LEAK INTERNAL TO CONSOLE U S VACUUM CALIBRATION ZERO SHIFT TEST 1 REMOVE THE TUBING AND THE FILTER FROM THE CONSOLE 2 SET THE MODE SWITCH TO VA VA VAC TO MINIMUM 0 RATE TO 40 3 FULLY DEPRESS THE FOOTPEDAL THE PUMP SHOULD IMMEDIATELY START TURNING AS THE I A KNOB IS ADVANCED THE ZERO VACUUM POINT IS MIS CALIBRATED IF THE PUMP REMAINS STOPPED DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 27 INADEQUATE VENTING PULLING OF THE CAPSULE IS USUALLY EVIDENCE OF INCOMPLETE VENTING OF VACUUM UPON RELEASE OF THE FOOTPEDAL UPON THE RELEASE AIR IS INTRODUCED INTO THE ASPIRATION SYSTEM BY THE CONSOLE WHICH SHOULD THEN PASS THROUGH THE FRONT PANEL FILTER AND INTO THE
32. OWER CORD THE MANUFACTURER ALSO SUPPLIES THE U S HANDPIECE ILLUSTRATED ALSO SHOWN ARE ACCESSORIES AND DISPOSABLES NOT NORMALLY SUPPLIED BY THE MANUFACTURER EXCEPT FOR THE DISPOSABLES THE USER HAS SIGNIFICANT FREEDOM IN CHOOSING THE ACCESSORY THAT BEST SUITS HIM THE USER SHOULD CONTACT HIS SALES REPRESENTATIVE FOR FURTHER INFORMATION CONCERNING THE COMPATIBILITY SUITABILITY AND AVAILABILITY OF ALL ACCESSORIES PAGE 13 OF THIS MANUAL CONTAINS A LIST OF ACCESSORIES RECOMMENDED BY THE MANUFACTURER AS BEING FULLY COMPATIBLE WITH THE DGH 9000 THE DGH 9000 IS AN OPHTHALMIC SURGICAL INSTRUMENT FOR ECCE THE OPHTHALMIC SURGEON HAS THE CHOICE TO REMOVE THE NUCLEUS FOR THE EYE MANUALLY OR TO EMULSIFY THE NUCLEUS WITH PHACO FOLLOWING THE ECCE THE DGH 9000 ASPIRATES CATARACTOUS AND OR CORTICAL MATERIAL FROM THE EYE A RELATIVELY CONSTANT INTROCULAR PRESSURE IOP IS MAINTAINED THROUGH THE INFUSION OF A STERILE SOLUTION SUCH AS BASIC SALT SOLUTION BSS IOP IS ADJUSTED BY RAISING LOWERING THE IRRIGATION SOLUTION CONTAINER THE DGH 9000 PROVIDES VITRECTOMY VIT CAPABILITY TO CUT AND ASPIRATE VITREOUS WHEN REQUIRED BY THE SURGICAL PROCEDURE CAUTERY IS PROVIDED TO CAUTERIZE BLOOD VESSELS THAT HAVE BEEN SEVERED BY THE SURGICAL PROCEDURE DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 2 SPECIFICATIONS FUNCTIONAL SPECIFICATIONS FUNCTION RANGE CHARACTERISTICS ASPIRATION VA VACUUM 0 500 mmHg U S VACUUM LO 0 100 mmHg U S
33. OWER IS ISOLATED BIPOLAR DIATHERMY SQUARE WAVE AT I MHz REFLUX MODE THE REFLUX MODE HAS NO ASSOCIATED CONTROL AS THE PUMP SPEED IS FACTORY PRESET TO 25 cc MIN IN THE REFLUX MODE THE FLOW OF THE PERISTALTIC PUMP IS REVERSED THE PANEL SURGEON CONTROL SWITCH AND MODE SWITCH HAVE NO CONTROL OVER THE REFLUX MODE REFLUX IS ENABLED BY DEPRESSING THE REFLUX SWITCH MOUNTED ON THE UNDERSIDE OF THE HOOD OF THE FOOTPEDAL THE POSITION OF THIS MOUNTING ALLOWS THE USER TO ENABLE REFLUX BY LIFTING HIS FOOT AWAY FROM THE FOOTPEDAL TREADLE UNTIL THE REFLUX SWITCH IS ENGAGED DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 12 RECOMMENDED ACCESSORIES THE DGH 9000 IS COMPRISED OF THE PHACOEMULSIFICATION CONSOLE AND THE FOOTPEDAL NORMALLY THE DEVICE IS SOLD WITH A POWER CORD AND U S HANDPIECE VARIOUS ACCESSORIES ARE REQUIRED TO COMPLETE THE SYSTEM TO PREPARE FOR SURGERY AND THESE ARE MADE AVAILABLE THROUGH THE DISTRIBUTOR DIRECT PURCHASE OF THESE ACCESSORIES FROM THEIR RESPECTIVE MANUFACTURERS IS POSSIBLE THOUGH FOR CONVENIENCE ARE NORMALLY PURCHASED FROM THE VALUE ADDED DISTRIBUTOR RECOMMENDED ACCESSORIES LIST A SET OF THE MOST COMMONLY USED ACCESSORIES RECOMMENDED ACCESSORIES ITEM MTP P N 899307 899553 891734 891171 2 891698 899497 891644 891648 899499 899498 899500 899501 899544 IPAX INC IPAX 2109 W AMHERST ENGLEWOOD CO 80110 TEL 303 781 2444 FAX 303 781 2505 SYNERGETICS INC SYN 17466 CHESTERFI
34. OWER ON OFF ROCKER SWITCH TO TEST FOR A FAILED PHACO MACHINE THE PROCESS IS VERY SIMILAR THIS TIME ONLY THE KNOWN GOOD HANDPIECE IS USED EXCHANGE THAT HANDPIECE BACK AND FORTH BETWEEN MACHINES ENOUGH TIMES TO VERIFY THAT PROBLEMS ARE ONLY OCCURRING WITH THE SUSPECTED MACHINE AS ABOVE RE TIGHTEN THE PHACO TIP AS REQUIRED TO VERIFY TIGHTNESS IN BOTH CASES IT IS IMPORTANT TO RE TEST THE COMBINATION THAT INITIALLY WAS WORKING TO INSURE THAT SOME TYPE OF FAILURE OR ERROR HAS NOT OCCURRED DURING THE MIDDLE OF TESTING DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 29 USER SERVICEABLE PROBLEMS SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION INCOMPLETE VENTING CLOGGED FILTER REPLACE FILTER CLOGGED HANDPIECE INSPECT AND CLEAN HANDPIECE CLOGGED ASPIRATION TUBING INSPECT AND CLEAN TUBING INADEQUATE VACUUM AIR LEAK IN ASPIRATION CIRCUIT INSPECT TUBING FOR CUTS TIGHTEN ALL ASPIRATION FITTINGS INADEQUATE PERISTALTIC CHECK THAT PUMP PUMPING ACTION LATCH IS TIGHT INADEQUATE TUBING ADJUST COMPRESSION COMPRESSION VIA PUMP SETSCREW REPLACE PUMP HEAD ASSEMBLY REPLACE WORN TUBING INADEQUATE FLOW WORN COLLAPSED TUBING REPLACE TUBING VACUUM EXCEEDS EXCESSIVE FLOW RATE REDUCE RATE SETTING PRESET LIMIT PARTIAL CHAMBER EXCESSIVELY HIGH U S VACUUM REDUCE U S VACUUM COLLAPSE UPON SETTING OCCLUSION BREAKAGE U S POWER WEAK LOW IRRIGATION SYSTEM PRESSURE ASPIRATION TUBING CAUSING SURGE LOOSE U S TIP U S HANDPIECE AT END OF LIFE
35. PROBLEMS USING STANDARD TROUBLESHOOTING METHODS IN GENERAL HOWEVER IT IS RECOMMENDED THAT THE TECHNICIAN USE THE METHOD OF SUBSTITUTION OF KNOWN GOOD COMPONENTS TO IDENTIFY MALFUNCTION PROBLEMS EXPERIENCED WITH THE PHACOEMULSIFIER CAN BE GROUPED IN THREE 3 CATEGORIES PROBLEMS ASSOCIATED WITH THE SETUP OF THE SYSTEM PROBLEMS WITH THE ACCESSORIES AND FUNCTIONAL PROBLEMS WITH THE CONSOLE ITSELF IT IS SUGGESTED THAT THE TECHNICIAN EVALUATE PROBLEMS ASSOCIATED WITH THESE THREE 3 GROUPS IN THE ORDER LISTED ABOVE NO USER SERVICEABLE COMPONENTS ARE CONTAINED WITHIN THE CONSOLE AND SAFETY PRECAUTIONS DICTATE THAT INPUT POWER SHOULD BE DISCONNECTED FROM THE UNIT DURING SERVICING TO AVOID SHOCK HAZARD CONSIDERABLE CARE MUST BE EXERCISED WHEN PERFORMING TROUBLESHOOTING AND SERVICING TO AVOID THE INTRODUCTION OF ADDITIONAL PROBLEMS DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 26 INADEQUATE VACUUM INADEQUATE SUCTION ASPIRATION IN THE PHACO MODE IS USUALLY CAUSED BY AIR LEAKING INTO THE SYSTEM REDUCING THE VACUUM LEVEL AT THE HANDPIECE OTHER CAUSES OF REDUCED SUCTION INCLUDE CLOGGED SYSTEM TYPICALLY HANDPIECE ASPIRATION PASSAGEWAY RATE KNOB SET TOO LOW U S VACUUM KNOB SET TOO LOW VACUUM KNOB HAS BECOME UNCALIBRATED PUMP IS NOT RUNNING PROPERLY IF INSURGERY THE PUMP CONTINUOUSLY RUNS AT A REASONABLE SPEED YET SUCTION IS INADEQUATE AN AIR LEAK IN THE SYSTEM SHOULD BE SUSPECTED AIR LEAK TEST 1
36. REATED DUE TO CAVITATION IF THE POSITION OF THE HANDPIECE IS MAINTAINED AT THIS LEVEL THE CAVITATION CRATER SHOULD BE MAINTAINED NOTE THAT ANY WATER FLOW FROM THE HANDPIECE SHOULD BE DIVERTED FROM THE WATER CONTAINER AND SHOULD NOT DRIP INTO THE AREA OF CAVITATION ONCE THE PRESENCE OF THE CAVITATION CRATER HAS BEEN CONFIRMED LOWER THE HANDPIECE TO THE ORIGINAL POSITION WITH THE TIP FULLY IMMERSED GRADUALLY RELEASE THE FOOTPEDAL TREADLE TO THE DETENT 2 POSITION THE HISSING SOUND FROM THE TIP SHOULD STEADILY AND CONTINUOUSLY DECREASE IN VOLUME DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL 16 VIT TESTS CONNECT THE VACUUM PRESSURE METER IN SERIES WITH THE TEST CHECK VALVE WITH THE OUTLET OF THE CHECK VALVE TOWARDS THE METER CONNECT THE INLET OF THE CHECK VALVE TO THE FRONT PANEL VIT CONNECTOR SET THE MODE TO VIT AND ENABLE VIT VIA THE FOOTPEDAL VIT SHOULD BE ENABLED ONCE THE FOOTPEDAL TREADLE IS DEPRESSED PAST THE DETENT 1 POSITION INITIALLY SETTING THE VIT CONTROL TO S THEN AT 100 CUTS MIN AND FINALLY AT 600 CUTS MIN CHECK THE PRESSURE INDICATED ON THE VACUUM PRESSURE METER THE PRESSURE MUST 30 PSI MINIMUM VENT THE METER BETWEEN READINGS REVERSE THE CHECK VALVE WITH THE INLET OF THE CHECK VALVE TOWARDS THE PRESSURE METER AND REPEAT THE TESTS THE PRESSURE METER MUST INDICATE LESS THAN 5 PSI DISCONNECT THE CHECK VALVE AND METER ENABLE VIT WHILE COUNTING THE AUDIBLE PNEUMATIC PULSATION CHECK THE CUT RATE AT T
37. RIATE VACUUM AND A TEE FITTING CAN BE CONNECTED IN SERIES TO ALLOW THE VACUUM PRESSURE METER TO MONITOR THE VACUUM LEVEL DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 18 TRANSDUCER SENSE VENT ASSEMBLY THE TRANSDUCER SENSE VENT SIGNALS CONN J4 ARE LISTED ON PAGE 35 THE INTERNAL SIGNALS SECTION OF THE TROUBLESHOOTING GUIDE ALONG WITH THE NOMINAL RANGES OF VOLTAGES THE MODULE HAS TWO FUNCTIONS ONE FUNCTION IS TO AMPLIFY THE SIGNALS FROM THE VACUUM TRANSDUCER AND CONVERT THOSE SIGNALS TO A HIGH LEVEL OUTPUT SIGNAL THE SPAN OF THIS SIGNAL VACACT IS 0 00 V AT ATMOSPHERE TO 2 500 V FOR 500 mmHg VACUUM THE GAIN OF THE AMPLIFIER IS SET BY PRECISION RESISTORS AND THEREFORE DOES NOT NEED ADJUSTMENT ZERO DRIFT OVER TIME IS POSSIBLE AND R27 ADJUSTS THE AMPLIFIER ZERO READING THE OTHER FUNCTION OF THE TRANSDUCER SENSE VENT ASSEMBLY IS TO VENT THE VACUUM AT THE VACUUM SENSE VENT PORT UPON RELEASE OF THE FOOTPEDAL TREADLE WHEN THE SW2 SIGNAL CHANGES FROM 1 TO 0 THE TIMERS OF THE ASSEMBLY ARE TRIGGERED THE TIMERS ARE CONFIGURED SO THAT THE VENT SOLENOID IS ENERGIZED PAST THE POINT IN TIME WHEN THE VACACT OUTPUT IS SEEN TO RETURN TO 0 0 VOLTS IN THIS WAY VENTING TO THE ZERO VACUUM LEVEL IS ASSURED HOWEVER DUE TO COMPLIANCE OF THE ASPIRATION TUBING THE VACUUM LEVEL AFTER VENTING MAY CREEP UP FROM THE INITIAL ZERO READING TO A SMALL VACUUM LEVEL THIS EFFECT IS NORMAL AND EXPECTED BEING OF NO CONSEQUENCE IT SHOULD BE NOTED T
38. ROL 14 IRR 0 0 IRR MODE MODE SWITCH IRR POSITION OUTPUT 5 VA U S VIT MODES 15 IAVACHI 5 0 ALL OUTPUT TO VA VAC CONTROL 16 IA 0 0 MODE MODE SWITCH I A POSITION OUTPUT 5 IRR U S VIT MODES 17 IAVACW 0 0 VA VAC 0 mmHg INPUT FROM I A VAC CONTROL 5 0 VA VAC 500 mmHg DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 33 CONN PIN SIGNAL M MENT V CONDITION DESCRIPTION J2 18 USSTD 0 0 US STD MODE MODE SWITCH U S POSITION NON PULSE PULSE SWITCH NON PULSE 5 ALL EXCEPT US STD MODE 19 IAVACLO 0 0 ALL RETURN FOR IAVAC POT 20 USPLSE 0 0 U S PULSE MODE MODE SWITCH U S POSITION PULSE SWITCH PULSE 5 0 ALL EXCEPT U S PULSE MODE 21 CAUTW 0 0 5 0 ALL INPUT FROM CAUTERY CONTROL 22 VIT 0 0 VIT MODE MODE SWITCH VIT OUTPUT 5 0 ALL OTHER MODES 23 CAUTLO 0 05ALL RETURN FOR CAUTERY POT 24 PSRTN 0 0 ALL POWER SUPPLY RETURN 25 5V 5 0 ALL 5V POWER TO FRONT PANEL BOARD 26 PSRTN 0 0 ALL POWER SUPPLY RETURN J3 1 SWCOM 0 0 ALL CONTROL SWITCH COMMON PSRTN 2 VPEDALHI 5 0 ALL 5 0V REFERENCE OUTPUT TO FOOTPEDAL 3 VPEDALRTN 0 0 ALL RETURN FOR FOOTPEDAL POT 4 REFLUX 4 2 REFLUX SWX OUTPUT FROM FOOTPEDAL RELEASED REFLUX SWITCH 0 0 REFLUX SWX DEPRESSED 3 NO CONNECTION 6 NO CONNECTION 7 VACACT 0 0 0 mmHg MEASURED OUTPUT FROM VACUUM VACUUM TRANSDUCER 2 50 500 mmHg MEASURED VACUUM 8 VPEDAL 0 0 FOOTPEDAL RELEASED OUTPUT FROM FOOTPEDAL TREADLE POT 5 0 FOOTPEDAL FULLY DEP 9 12V 12 ALL 12V POWER TO AUDIO VAC 10 GFAULT 0 HAN
39. S ARE ENABLED IN AN IDENTICAL MANNER TO THE IRRIGATION ASPIRATION MODE ULTRASONIC POWER IS DELIVERED TO THE U S HANDPIECE ONCE THE FOOTPEDAL TREADLE IS ADVANCED PAST THE DETENT 2 POSITION PLEASE REFER TO SPECIFICATIONS FOOTPEDAL amp CONTROL SWITCH FIGURE 3 PAGE 10 OF THE OPERATOR S MANUAL P N 897182 IN THE PANEL CONTROL MODE FULL PRESET U S POWER LEVEL IS IMMEDIATELY OBTAINED UPON U S ENABLE IN THE SURGEON CONTROL MODE THE U S POWER CAN BE LINEARLY CONTROLLED VIA THE FOOTPEDAL TREADLE UP TO THE PRESET LIMIT THE PRESET VACUUM LIMIT IS OBTAINED UPON ASPIRATION ENABLE AND IS NOT VARIABLE VIA SURGEON FOOTPEDAL CONTROL THE U S LO VAC AND U S HI VAC MODES DIFFER ONLY IN THE MAXIMUM LEVEL OF THE PRESET LIMIT VACUUM IN THE U S LO VAC MODE THE ASPIRATION VACUUM LIMIT CAN BE SELECTED OVER THE RANGE OF 0 100 mmHg IN THE U S HI VAC MODE THE ASPIRATION VACUUM LIMIT CAN BE SELECTED OVER THE RANGE OF 0 200 mmHg EXTREME CARE MUST BE TAKEN WHENEVER HIGH ASPIRATION VACUUM LIMITS ARE SET IN THE U S MODE IT SHOULD NOT BE ASSUMED THAT THE MANUFACTURER CLAIMS ASSURED SAFETY OR EFFECTIVITY FOR THE HIGH U S ASPIRATION LEVELS ACHIEVABLE WITH THE DGH 9000 ULTRASONIC PULSE MODE THE ULTRASONIC PULSE MODE IS SELECTED DESELECTED BY DEPRESSING THE ALTERNATE ACTION PULSE PUSH BUTTON WHEN IN EITHER OF THE U S MODES PULSE INDICATOR ILLUMINATED WHEN IN PULSE MODE OPERATION REMAINS IDENTICAL TO THE ULTRASONIC STANDARD MODES EXCEPT THE U S POWER D
40. SQ 0 12 TEST SIGNAL SQ WAVE 40 kHz VOLTAGE PHASE 3 RTN 0 ALL RETURN FOR TEST SIGNALS 4 ERRAMP 3 10 U S DRIVER FREQ CONTROL VOLTAGE ENABLED AND TUNED 5 EVARB 2 3 U S POWER 10 DC POWER TO U S DRIVER 23 U S POWER 100 DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 35 CONN PIN SIGNAL M MENT V CONDITION DESCRIPTION J8 I 12V 12 ALL 12V POWER TO VIT 2 PSRTN 0 ALL POWER GROUND RETURN 3 NO CONNECTION 4 NO CONNECTION 5 NO CONNECTION 6 RTN 0 0 ALL REFERENCE GROUND FOR VIT 7 VITENB 5 VIT DISABLED VIT ENABLE VIT MODE DETENT 1 8 NO CONNECTION 9 NO CONNECTION 10 VITHI 4 3 ALL OUTPUT TO VIT CONTROL 11 VITW 4 3 0 CUTS MIN INPUT FROM VIT CONTROL 3 4 600 CUTS MIN 12 VITLO 3 4 ALL VIT CONTROL RETURN 13 5V 5 ALL 5V POWER TO VIT 14 PSRTN 0 ALL POWER GROUND RETURN 15 PSRTN 0 ALL POWER GROUND RETURN 16 24V 24 ALL 24V POWER TO VIT 17 24V 24 ALL 24V POWER TO VIT 18 24V 24 ALL 24V POWER TO VIT 19 NO CONNECTION 20 NO CONNECTION J9 1 MTRI 0 ALL MOTOR RETURN MTR2 4 7 MOTOR POWER TO MOTOR MINIMUM RPM 14 20 MAXIMUM RPM 6 MOTOR REVERSED REFLUX 3 TACHI 0 ALL TACHOMETER RETURN 4 TACH2 4 MOTOR OUTPUT FROM TACHOMETER MINIMUM RPM 14 MOTOR MAXIMUM RPM 1 CAUTI 150 P P I MHz CAUTERY TERM 1 OF BIPOLAR CAUT MAXIMUM 0 CAUTERY MINIMUM 2 NO CONNECTION 3 CAUT2 BIPOLAR TERM 2 OF BIPOLAR CAUT DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 36 CONN PIN SIGNAL M MENT V CONDITION DESCRIPTION P
41. TED CYLINDER THE IRRIGATION FLOW RATE MUST BE A MINIMUM OF 40 cc MIN VACUUM TESTS CONNECT THE ASPIRATION TUBING ONLY PER U S HANDPIECE SYSTEM SETUP ASPIRATION TUBING SET FIGURE 11 OF THE OPERATOR S MANUAL P N 897182 LEAVING THE END OF THE ASPIRATION TUBING UNCONNECTED TO THE U S HANDPIECE INSTEAD CONNECT THAT END TO THE VACUUM PRESSURE METER WITH THE MODE SWITCH IN THE VA U S VAC LO AND U S VAC HI POSITIONS CHECK THE VACUUM RANGE AT THE MINIMUM SETTING AND IN 20 OF MAX INCREMENTS PLACE THE CONTROL SWITCH IN THE PANEL POSITION AND DEPRESS AND HOLD THE FOOTPEDAL TREADLE TO ENABLE VACUUM OBSERVE THE ASPIRATION VACUUM DISPLAY THE VACUUM SHOULD BUILD AND REACH A MAXIMUM VALUE NEAR THE PRESET LIMIT ACCURACY SHOULD BE 1 OF FULL SCALE PLUS 10 OF SETTING BOTH ON THE ASPIRATION VACUUM DISPLAY AND THE EXTERNAL VACUUM PRESSURE METER AT THIS POINT THE PERISTALTIC PUMP HEAD SHOULD STOP ROTATING THE PUMP HEAD SHOULD REMAIN MOTIONLESS UNTIL SYSTEM COMPLIANCE OR SMALL AIR LEAKS REQUIRE ADDITIONAL ROTATION TO MAINTAIN THE PRESET VACUUM LEVEL IN THE I A MODE WITH THE PRESET VACUUM SET TO 400 cc MIN THE PUMP ROLLER SHOULD REMAIN MOTIONLESS FOR A PERIOD OF 5 OR MORE SECONDS ONCE PRESET VACUUM IS REACHED SHORTER PERIODS OF NON ROTATION ARE INDICATIVE OF ONE OR MORE SMALL AIR LEAKS EITHER INTERNAL OR EXTERNAL TO THE DGH 9000 EXTERNAL LEAKS PRESENT IN THE ASPIRATION TUBING CIRCUIT MAY STEM FROM SMALL CUTS IN THE SOFT SILICONE TUBING OR AT
42. THE SEVEN 7 PHILLIPS HEAD SCREWS SECURING THE ASSEMBLY THREE 3 ON THE FRONT EDGE OF THE BOARD THREE 3 ON THE REAR EDGE AND ONE 1 IN THE CENTER OF THE BOARD VIT REMOVE THE COMPLETE VIT ASSEMBLY BY REMOVING THE FOUR 4 PHILLIPS HEAD SCREWS SECURING IT ON THE UNDERSIDE OF THE CHASSIS POWER SUPPLY REMOVE THE POWER SUPPLY BY FIRST REMOVING THE FOUR 4 NUTS AT THE CORNERS OF THE PCB USING A 1 4 IN HEX WRENCH REMOVE THE TOP NUT HOLDING THE POWER RECEPTACLE TO THE CHASSIS USING A 5 16 IN OPEN END WRENCH REMOVE THE BOTTOM NUT OF THE RECEPTACLE USING A 5 16 IN NUT DRIVER PLACED THROUGH THE ACCESS HOLE IN THE PCB SLIDE THE ASSEMBLY AWAY FROM THE CHASSIS STANDOFFS AND THEN DISCONNECT THE GROUNDING JUMPER ATTACHED TO THE CHASSIS USING A 5 16 IN WRENCH AUDIO VAC ON THE REAR EXTERIOR OF THE CHASSIS REMOVE THE VOLUME KNOB USING A 1 16 IN ALLEN WRENCH REMOVE THE EXPOSED SHAFT MOUNTING NUT USING A 5 16 IN NUT DRIVER REMOVE THE SIX 6 NUTS SECURING THE PCB TO THE CHASSIS USING A 1 4 IN NUT DRIVER NOTE THE LOCATION OF THE GROUNDING WIRE WITH LUG FOR RE ASSEMBLY DISCONNECT THE GROUNDING JUMPER ATTACHED TO THE CHASSIS USING A 5 16 IN WRENCH DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 25 TROUBLESHOOTING INTRODUCTION THIS TROUBLESHOOTING SECTION IS PRESENTED AS AN AID TO ASSIST THE TECHNICIAN IN TROUBLESHOOTING PROBLEMS EXPERIENCED WITH THE PHACOEMULSIFIER A TECHNICIAN SKILLED IN THE ART SHOULD DIAGNOSE ALL
43. TO ACHIEVE SPEED REGULATION THE MOTOR INCORPORATES A FEEDBACK WINDING WHOSE OUTPUT IS FED BACK TO A SUMMING NODE AT THE INPUT TO THE CONTROLLER THUS MOTOR INPUT CURRENT INCREASES WITH FRICTIONAL LOAD MAINTAINING A CONSTANT MOTOR SPEED DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 20 VIT ASSEMBLY THE VIT ASSEMBLY IS COMPRISED OF A 24 VDC POWERED AIR COMPRESSOR A BI DIRECTIONAL PNEUMATIC VALVE AS WELL AS CONTROL ELECTRONICS THESE ELECTRONICS CONSIST OF A COMPRESSOR ENABLE RELAY AND AN ADJUSTABLE RATE OSCILLATOR COUPLED TO A SOLENOID DRIVER WHEN DRIVEN THE SOLENOID ALTERNATELY CONNECTS THE VIT FRONT PANEL LUER CONNECTOR TO THE COMPRESSED AIR AND THEN TO ATMOSPHERE THE RATE OF THE OSCILLATOR IS CONTROLLED BY THE FRONT PANEL VIT CONTROL WHEN THE MODE SWITCH IS IN THE VIT POSITION THE COMPRESSOR RELAY AND SOLENOID DRIVER ARE ENABLED WHENEVER THE FOOTPEDAL TREADLE PASSES THE DETENT 1 POSITION AUDIO VAC ASSEMBLY THE AUDIO VAC ASSEMBLY PERFORMS SEVERAL FUNCTIONS IT ACTS AS INTERCONNECT FOR THE FOOTPEDAL INTERCONNECT FOR THE REAR PANEL CONTROL SWITCH AND PROVIDES AUDIO FEEDBACK OF THE ASPIRATION VACUUM LEVEL WITH THE PITCH OF THE FEEDBACK TONE RISES WITH INCREASING ASPIRATION VACUUM THE AUDIO OUTPUT LEVEL INCREASES WITH CLOCKWISE ROTATION OF THE VOLUME CONTROL SETTING THIS CONTROL TO THE MOST COUNTER CLOCKWISE POSITION INHIBITS THE VACUUM FEEDBACK TONE IN ADDITION THE AUDIO VAC ASSEMBLY EMITS A HIGH PITCHED TONE WHEN
44. V CONDITION DESCRIPTION J1 1 PSRTN 0 0 ALL POWER SUPPLY RETURN PSRTN 2 24V 25V ALL 25V POWER INPUT 3 PSRTN 0 0 ALL POWER SUPPLY RETURN PSRTN 4 12V 12V ALL 12V POWER INPUT 5 5V 5V ALL 5V POWER INPUT 6 12V 12V ALL 12V POWER INPUT 7 5V 5V ALL 5V POWER INPUT 8 PSRTN PSRTN ALL POWER SUPPLY RETURN 12 1 USHI 3 0 SURGEON MODE OUTPUT TO U S POWER CONTROL 0 0 PANEL MODE PEDAL RELEASED 3 0 PANEL MODE PEDAL FULLY DEP 2 USVACLO 0 0 ALL REF GND TO U S VAC CONTROL 3 USW 0 0 U S POWER 0 INPUT FROM U S POWER CONTROL 3 0 PANEL MODE U S POWER 100 0 0 3 0 SURGEON MODE IS 3 0V X FOOTPEDAL U S U S POWER 100 POWER 4 USVACW 0 0 U S VAC 0 mmHg INPUT FROM U S VAC CONTROL 0 5 U S VAC 100 mmHg U S LO VAC 1 0 U S VAC 200 mmHg U S HI VAC 5 USLO 0 0 ALL REF GND TO U S POWER CONTROL 6 USVACHI 5 0 ALL REF FOR US VAC CONTROL 7 RATEHI 5 0 IRR amp U S MODES OUTPUT TO RATE CONTROL 5 0 PANEL I A amp VIT MODES 0 0 5 0 SURGEON I A amp IS 5 0V X FOOTPEDAL VIT MODES 8 VITHI 4 3 ALL INPUT TO VIT CONTROL 9 RATEW 1 4 5 0 IRR amp U S MODES INPUT FROM RATE CONTROL 1 4 5 0 PANEL I A amp VIT MODES 0 0 5 0 SURGEON I A amp VIT MODES 10 VITW 43 VIT 0 CUTS MIN INPUT FROM RATE CONTROL 3 4 VIT 600 CUTS MIN 11 RATELO 1 4 IRR U S MODES RETURN FOR RATE CONTROL 3 9k TO GND 1 4 PANEL VA amp VIT MODES 0 0 1 4 SURGEON amp VIT MODES 12 VITLO 3 4 ALL RETURN FOR VIT CONTROL 13 CAUTHI 5 0 ALL OUTPUT TO CAUT CONT
45. WS THE USER TO ENGAGE THE REFLUX BY LIFTING HIS FOOT AWAY FROM THE FOOTPEDAL TREADLE UNTIL THE REFLUX SWITCH IS ENGAGED DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE 4 U S POWER THE U S POWER CONTROL SETS THE MAXIMUM PRESET LIMIT FOR U S POWER DELIVERED TO THE U S HANDPIECE OVER THE RANGE OF 0 100 WHENEVER EITHER OF THE U S MODES IS SELECTED THE PRESET VALUE IS DISPLAYED BY THE U S POWER DISPLAY WHENEVER THE FOOTPEDAL TREADLE IS IN THE RELEASED POSITION AND THE MODE CONTROL IS IN THE U S LO VAC OR U S HI VAC POSITIONS U S POWER DISPLAY WHEN THE FOOTPEDAL TREADLE IS IN THE RELEASED POSITION THE U S POWER DISPLAY INDICATES THE MAXIMUM PRESET LIMIT FOR THE U S POWER DELIVERED TO THE U S HANDPIECE WHEN THE FOOTPEDAL TREADLE IS DEPRESSED THE U S POWER DISPLAY INDICATES THE PERCENTAGE OF U S POWER DELIVERED TO THE U S HANDPIECE PULSE PUSH BUTTON THE PULSE PUSH BUTTON IS AN ALTERNATE ACTION SWITCH THAT SELECTS EITHER THE U S STANDARD CONTINUOUS POWER OR U S PULSE MODE WHEN THE PULSE MODE IS SELECTED THE U S POWER IS PULSED BETWEEN 0 AND SELECTED POWER AT A 10 Hz RATE PULSE INDICATOR THE PULSE INDICATOR IS ILLUMINATED WHEN EITHER OF THE U S MODES IS SELECTED AND THE PULSE PUSH BUTTON HAS BEEN DEPRESSED TO SELECT THE U S PULSE MODE U S TIME DISPLAY THE U S TIME DISPLAY INDICATES THE TOTAL ACCUMULATED TIME THAT U S POWER HAS BEEN ENABLED SINCE THE LAST SYSTEM POWER ON OR SINCE THE RESET PUSH BUTTON H
46. n eres ten Pre DR den TRANSDUCER SENSE VENT ASSEMBLY U S CONTROLLER ASSEMBLY u u a EE sen VIT ASSEMBLY teca eei Reed AUDIO VAC ASSEMBLY tte ree ette anni pre De te carter a POWER SUPPLY ASSEMBLY 2 82 22 Oo us usu sue bip TABLE OF CONTENTS cont DGH 9000 DGH 9000 PHACO MTP P N 897183 REV PREL PAGE iii BWR SECTION MAINTENANCE INTRODUCTION cip reete teet Reini kk eO REIR aki Da nese REQUIRED TOOLS AND SUPPLIES eese nennen eene ROUTINE MAINTENNANCE rete iere E PER T eee e seedet SERVICE INTRODUCTION ii isa a Der bass ekat pmi oe dte REQUIRED TEST EQUIPMENT TOOLS AND SUPPLIES DISASSEMBLY neo pee deste ns hooks e Ee I Ee eredi epit US CASB CHASSIS eo Un Pe Oed FRONT PANEL ASSEMBLY Bi eiit tpe tert Sant FRONT PANBIZ BOB or entier re eI banks SIDE PANEL DISASSEMBLY nennen US CONTROLLER huetar POWER SUPPLY A 4 nnde e ene e ere et eni e E AUDIO ion e EIE D giu EH TROUBLESHOOTING INTRODUCTION eit Pc te e m e P im e ete e eei ui INADEQUATE VACUUM 5222222282 222 ERI GEHE GEO AIR LEAK TEST a e 124 2088 2ER Pe RD POR UHR M s POSSIBLE SOURCES OF AIR LEAK 0 U S VACUUM CALIBRATION ZERO SHIFT TEST eee INADEQUATE VENTINQG
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