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Mac 5000 Service Manual

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1. Item Part Number Pacha MAC 5000 keyboards are Keyboard Assembly English 421115 X01 available in various styles the Keyboard Assembly German 421115 X02 letter X is used herein the place of the number as follows Keyboard Assembly French 421115 X03 X 21 current style keyboard Keyboard Assembly Spanish 421115 X04 X 22 aurrent style ST keyboard Keyboard Assembly Swedish 421115 X05 Keyboard Assembly Italian 421115 X06 Keyboard Assembly J apanese 421115 X07 Keyboard Assembly Dutch 421115 X08 Keyboard Assembly Norwegian 421115 X09 Keyboard Assembly Danish 421115 X10 Keyboard Assembly Czech 421115 X11 Keyboard Assembly Hungarian 421115 X14 Keyboard Assembly Polish 421115 X15 Power Cord Generic PTO Option Class POWERCORDS Power Cord 125V 6FT Stress 80274 006 Power Cord 125V 6FT SE 80274 004 Power Cord CONT Euro 10A 250V 8FT 401855 001 Power Cord British 10A 250V 8FT 401855 002 Power Cord Italian 10A 250V 8FT 401855 003 Power Cord Israeli 10A 250V 8FT 401855 004 Wire Harness 10A 125V 6 5FT 401855 005 Wire Harness 10A 250V 6 5FT 401855 006 Power Cord Swiss 10A 250V 8FT 401855 007 Power Cord Indian 10A 250V 8FT 401855 008 Danish 220VAC 50HZ STRESS 401855 009 Power Cord Australian 10A 250V 8FT 401855 010 Power Cord 10A 8FT CONT Euro Stress 401855 101 Power Cord 10A 8FT British Stress 401855 102 Power Cord Italian 10A 8FT Stress 401855 103 Power Cord Israeli 10A 8FT Stress 401855 104 Power Cord S
2. Signal 12V Power 12V Power 12V Power Ground Ground Brightness Select Backlight Enable NC wo CO S BD OT By w N FR Ground I o Ground Keyboard J8 Pin No Signal NC NC NC NC NC Sense4 Sense2 Sensel wo CO BD OT By w N FR Sense0 5 24 MAC 5000 resting ECG analysis system 2017803 003 Revision C Troubleshooting CPU PCB Input Output Signals Keyboard J8 Continued 10 Sense3 11 Sense 12 Sense6 13 Sense7 14 Drive 15 Drivel 16 Drive2 17 Drive3 18 Drive4 19 Ground 20 PowerKey 21 Drive5 22 Drive6 23 Drive7 24 Drive8 25 Drive9 26 Drivel0 LCD J10 Pin No Signal 1 Ground 2 Pixel Clock 3 Hsync 4 Vsync 5 Ground 6 RO LSB 7 R1 8 R2 9 R3 10 R4 11 R5 MSB 12 Ground 13 G0 LSB 14 G1 15 G2 16 G3 Revision C MAC 5000 resting ECG analysis system 5 25 2017803 003 Troubleshooting CPU PCB Input Output Signals LCD J10 Continued 17 G4 18 G5 MSB 19 Ground 20 BO LSB 21 B1 22 B2 23 B3 24 B4 25 B5 MSB 26 Ground 27 Data Enable 28 3V Power 29 3V Power 30 NC 31 NC Power Su
3. Disk drive slot Keyboard MD1325 115A Back View Back panel AC power Battery Internal connectors light light access button MD1325 117A Revision C MAC 5000 resting ECG analysis system 2 3 2017803 003 Equipment Overview Connector Identification Connector Identification Sooo JO O 0000 JO A TTL EXTVID 100 240V 50 60Hf 0 85A Table 4 Back Panel Connectors Item Name Description A A Connect Bar Code Reader Card Reader PS2 Style Keyboard B 1 Treadmills or GE KISS pump optional C 2 Connect a local transmission cable serial line or external modem optional D ANA TTL Connecta device requiring analog data or TTL trigger E EXT VID Connect an external video display F IR Point ata MAC 5000 or MUSE CV system s IR transceiver to transmit or receive ECG data G card slot door Liftto open the door and insert the software card into this slot to run the system H ground lug Connect non grounded peripheral devices to ensure equipotential mains AC Insertthe mains AC power cable power 2 4 MAC 5000 resting ECG analysis system 2017803 Revision C 003 Equipment Overview Detailed Description Detailed Description The MAC 5000 CPU PCB contains all of the circuitry for the MAC 5000 resting ECG analysis system except for the power supply acquisition module keyboard and display The board contains the following Clock 24 MHz for
4. Laboratory Inc Unconf unconfirmed UUT unit under test V v V volt volts V1 V6 precordial leads v123 V1 V2 V3 V3R precordial lead A 10 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix A Abbreviations Standard Abbreviations V456 V4 V5 V6 V4R precordial lead V ac volts alternating current V de voltage direct current VA volt amperes Var variable VDE Verband Deutscher Elektrotechniker German regulatory agency Vent ventricular VF ventricular fibrillation VGA video graphics array VIA versatile interface adapter VIO violet Volt voltage VRAM video RAM vs versus W w with W watt Warfar Warfarin WHT white WI Wisconsin Revision C MAC 5000 resting ECG analysis system A 11 2017803 003 Appendix A Abbreviations Standard Abbreviations X x by as in 8 1 2 x 11 XCV transceiver X Y Z orthogonal leads Y Y year yellow yr year yrs years YY year Symbols T SHIFTed or alternate function u micro uF microfarad us usec microsecond 68K 68000 amp and number C degrees Celsius F degrees Fahrenheit Q Ohm ohm percent registered gt greater than lt less than plus or minus 5 An asterisk after a signal name indicates the signal is active at its relatively lower potential or active low Signals without the asterisk suffix are active at their relatively higher potential or active high 12SL 12 simultaneous leads MAC 5000 resting ECG analysis
5. evision MAC 5000 resting ECG analysis system 2017803 003 For your notes A 2 MAC 5000 resting ECG analysis system 2017803 003 Revision C Appendix A Abbreviations Standard Abbreviations Standard Abbreviations A A ampere A ang antianginal A arh antiarrhythmic A coa anticoagulants A hyp antihypertensive Al A4 auxiliary leadwires AAMI American Association of Medical Instrumentation ABP ambulatory blood pressure ac AC alternating current ACLS Advanced Cardiac Life Support A D analog to digital Adj adjustable AG automotive glass Ah ampere hours AHA American Heart Association Al aluminum AllRam all RAM AllSec all sector AllTrk all track ALT alternate Alt Off alternate offset am AM acquisition module ante meridiem AM 1 acquisition module 1 AM 1M acquisition module 1 modified AM 2 acquisition module 2 AM 3 acquisition module 3 AM 4 acquisition module 4 amp ampere Ampl amplifier AMU ambulatory monitoring unit ANA analog ANLG analog AnsrTone answer tone A O Analog Output ASCII American Standard Code for Information Interchange ASSY assembly Attn attention AUG August AUST Australian AUSTRALN Australian Auto automatic AutoRhym automatic rhythm AUX auxiliary aVF augmented left leg lead avg average aVL augmented left arm lead aVR augmented right arm lead AWG American Wire Gage B Revision C MAC 5000 resting ECG analysis system A 3 2017803 003 Appendix A Abbreviations Standard Abbreviati
6. 10 Battery Type User replaceable 18V 3 5 AH 10 rechargeable NiMH pack Battery Capacity 100 single page reports typical or 6 hours continuous operation without printing Battery Charge Time Approximately 4 5 hrs from total discharge with display off NOTE Cannot charge battery at or above 45 C best if below 40 C Vectorcardiography Item Description Report Formats Vector loops of component vectors P QRS ST T Sensitivity 20 40 80 160 mm mV Time Resolution 2 ms B 4 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix B Technical Specifications Technical Specifications Hi Res and PHi Res Signal Averaged Electrocardiography Item Description Frequency Response Input 3 dB 0 01 and 250 Hz Frequency Response Output Upper Limit 250 Hz Lower Limit 0 01 25 40 or 80 Hz Sensitivities Raw Data and Template Average Beat Filtered Signals and Vector Magnitude 20 mm mV 20 mm mV and 50 mm mV 1 mm u V Analysis Sampling Rate 1000 samples per second per channel Digital Sampling Rate 4000 samples per second per channel High Low Pass Filters Spectral filter using Fast Fourier Transform FFT ADC Resolution 1 22 uV LSB Analysis Resolution 0 1525 uV LSB Physical Item Description Height 9 4 cm 3 7 in with display closed Width 38 1 cm 15 0 in Depth 35 1 cm 13 8 in Weight 6 8 kg 15
7. 3 4 Installing the MAC 5000 0 ccc c ccc cece rr 3 6 Installing the Modem Kit 3 8 Magnetic Card Reader Installation 0 0 0 cece cece ete 3 10 Bar Code Reader Installation ccc ccc cece cence e 3 12 Type S Trolley Assembly 0 0 00 cece eee ete eee 3 14 MAC 5000 ST Requirements and Configuration o o 3 15 Compatible Blood Pressure Units 3 15 Compatible GE Medical Systems Information Technologies Treadmills 3 16 Analog Treadmills icon naaa 3 16 Bicycle Ergo meters iii EA ani Ada de se ge 3 17 MAINTENANCE ioes iee niare had Im Re Enea 4 1 Introductlor a eite da E E REE oo 4 3 Recommended Maintenance cece ect eee nes 4 3 Required Tools and Supplies 0 cece cette eee 4 3 Inspection and Cleaning sesseseeennn 4 4 Visuali Inspection 5 5 serene pret ep tae oe etr a Fart anto 4 4 Exterior Cleaning sisaria aaa alana o o EH cm VOCE 4 4 Interior Cleanifig i ot ten RR ete Reb Poke ee ex deber ET ven 4 4 Generali uc ER Ree t n ir bab I een 4 4 Ehermal Printhead i55 e hoe adas ia bed e deg 4 5 Battery and Patient Cable Replacement 0 scceeeeeeeeeee ees 4 6 Battery Replacement cia Cree peo E T 4 6 Patient Cable Replacement 0c cect eee ne 4 6 Disassembly Guidelines sese 4 7 Preliminary PS Ir e teta rcr eden n ac 4 7 Trolley Disassembly eoo teer er rero datan da SET wows 4 7 Type S Trolley Disassembly isses 4 8 PowerSu pply cese oosenp
8. 4 Detach the diskette drive and lift from the unit Apply the adhesive pad to the replacement diskette drive and position the drive in the unit Insert and loosely attach the two screws ADHESIVE PAD 6 The mounting screws MUST be tightened in the following order Tighten thetwo TORX mounting screws Next tighten the two screws holding the drive to the mounting bracket Connect cable to the main PCB Replace the display keyboard assembly and the top cover following procedures above Writer Roller Carriage Assembly Removal Remove the power supply assembly following procedures above 2 Inside the power supply compartment disconnect the cable that connects to the writer assembly 3 Open the unit to access the paper compartment Move the paper size bracket to the A4 position to expose one of the writer assembly mounting screws 4 Remove the screw and return the paper size bracket to the 8 5 x 11 position Close the unit and turn it over so the bottom side is up Remove the four screws located on the underside of the writer roller carriage assembly and lift the writer from the bottom of the unit Revision C MAC 5000 resting ECG analysis system 4 15 2017803 003 Maintenance Disassembly Guidelines Reassembly Reassemble the writer roller carriage assembly by reversing the above procedures 4 16 MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Disassembly Guide
9. EGA EMF EMI ENG EOF EPIC EPLD EPROM ESD etc etc EURO EXP F F1 F5 Fax FCC FE FILH FLH FLRAM decibel referenced to 1 milliwatt into 600 ohms direct current double density day Digital Diagnostic Diskette Digital Equipment Corporation December delete demonstration designation device identification diagnostic Digitalis Digitoxin digoxin Digoxin Lanoxin dual in line package directory diuretics date of birth disk operating system diametral pitch double pole single throw dynamic RAM digital recording digital transmission desktop Dysopyramide E enable vector electrode site vector lead electrocardiogram Engineering Change Order Electrocardiograph Digital Information Center electrically erasable programmable ROM for example enhanced graphics adapter electromotive force electromagnetic interference English end of file Electronic Patient Information Chart electrically programmable logic device eraseable programmable read only memory electrostatic discharge et cetera Europe European Expanded fuse Farad female function keys 1 through 5 facsimile Federal Communications Commission front end fillister head flat head flash RAM Revision C MAC 5000 resting ECG analysis system A 5 2017803 003 Appendix A Abbreviations Standard Abbreviations FR French FrntEnd front end FSK frequency shift keying ft foot feet Furosem Furosemide G
10. If you want the MAC 5000 or 12SL interpretation included on the ECG put the number of copies you want in the with column If you do not want the MAC 5000 interpretation to print on the ECG put the number of copies you want in the without column Click view report type to see the examples of the report formats Press the esc key until you return to System Setup Select Save Setup Select To System Y ou can select Main Menu to exit System Setup What is the difference between the Hi Res and Phi Res functions Hi Res looks at the entire complex whereas Phi Res focuses on the P wave Can you edit the interpretation at the MAC 5000 and then transmit the edited record tothe MUSE system as an unconfirmed record If you edit demographic information only the record is still transmitted to the MUSE system as an unconfirmed record However if you edit the interpretation the data will not be saved unless the record is confirmed at the MAC 5000 The record is transmitted to the MUSE system as a confirmed record as well Revision C MAC 5000 resting ECG analysis system 5 19 2017803 003 Troubleshooting Frequently Asked Questions Entering Patient Data Transmission Q Dol haveto enter all the Information see on the Patient Data A screen In System Setup Basic System Patient Questions you can require that the patient identification number or medical record number be entered It is not a requiremen
11. and do not place the leadwires on the floor To be tested power connector on back of tester may not be labeled on some testers Tester Tester 9 A Sy power e Polarity UUT Li cord Norm i power ine i e Ses Line cord Neutral 9 Unit I under i Neutral test Gnd Rys Uut LJ Gnd ge I 1K l I MAN lt A I Meter T lt lt Patient cable connectors A _ _ a be YN AN LE q IS atient cable connectors M13052 04F 4 22 MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Domestic Electrical Safety Tests Ground Continuity This test verifies that there is continuity less than 200 ma resistance between all the exposed metal surfaces which have the potential to become energized and the ground prong on the mains AC power cord If the metal surfaces are anodized or painted scrape off a small area in an inconspicuous area for the probe to make contact with the metal Usea digital multimeter to check ground continuity from the AC line cord ground pin to exposed metal surfaces i e rear panel ground lug ANA TTL and EXT VID Ifthe measurements are significantly out of range check for breaks in the power cord or in theinternal connections within the unit Revision C MAC 5000 resting ECG analysis system 4 23 2017803 003 Maintenance Domestic Electrical Safety Tests For your notes 4 24 MAC 5000 resting ECG analysis system 2017803 00
12. should be at least 30 Electrical fast transient burst 2 kV for power supply lines 1 kV for input output lines 2 kV for power supply lines 1 kV for input output lines Mains power should be that of a typical commercial or hospital environment EN 61000 4 4 Surge X 1 kV differential mode 1 kV differential mode Mains power should be that of a typical EN 61000 4 5 2 kV common mode 2 kV common mode commercial or hospital environment Voltage dips short interruptions and voltage variations on power supply input lines EN 61000 4 11 lt 5 Ut gt 95 dip in U for 0 5 cycles 40 U 60 dip in U for 5 cycles 70 U 30 dip in U for 25 cycles lt 5 U 29596 dip in U for 5 sec lt 5 U 59596 dip in U for 0 5 cycles 40 U 60 dip in U for 5 cycles 70 U 30 dip in U for 25 cycles lt 5 U 59596 dip in U for 5 sec Mains power should be that of a typical commercial or hospital environment If the user ofthe MAC 5000 requires continued operation during power mains interruptions it is recommended that the MAC 5000 be powered from an uninterruptible power supply or a battery Power frequency 3 A m 3 A m Power frequency magnetic fields should be 50 60 Hz magnetic atlevels characteristics of a typical location field in a typical commercial or hospital EN 61000 4 8 environment NOTE Ut is the AC mains voltage prior to applica
13. ECG analysis system Revision C 2017803 003 Introduction Equipment Symbols Equipment Symbols ry o s e gt io 3 ie MEDICAL EQUIPMENT UL 2601 1 CAN CSA 601 1 4P41 The following symbols appear on the equipment Type B equipment Type BF equipment external defibrillator protected Alternating current When illuminated the green LED next to this symbol indicates AC power is connected Equipotential Charge the battery The flashing amber LED nextto this symbol indicates you must connect the system to AC power to re charge the battery DO NOT throw the battery into the garbage Recycle the battery Consult accompanying documents Classified with respect to electric shock fire mechanical and other specified hazards only in accordance with UL 2601 1 CAN CSA C22 2 No 601 1 CAN CSA C22 2 601 2 25 EN 60601 2 25 EN 60601 1 1 In Europe this symbol means dangerous or high voltage In the United States this symbol represents the caution notice below A CAUTION To reduce the risk of electric shock do NOT remove cover or back Refer servicing to qualified personnel M15287 16A 96A 97A 98A 99A 100A 101A 102A 103A 108A 181A Revision C MAC 5000 resting ECG analysis system 1 7 2017803 003 Introduction Service Information Service Information Service Requirements Refer equipment servicing to GE Medical Systems Information Technologies authorized service personnel o
14. FPGA Field Programmable Gate Array SDRAM holds both code and data also acts as video frame memory SmartM edia Flash holds FPGA configuration and system code CRT video DAC s External 12 Volt Power Switch Acquisition Module Transceiver Power Switch Printhead Power Switches and Pixel Test Circuit Switch Mode Power Supplies 3 3 Volt for Logic LCD 5 Volt for Logic Printer Floppy Drive 12 Volt for LCD backlight External Com Port Power Battery Charger 12 Charge Pump for Analog Circuits 9 0 0 m Linear Power Supplies 1 8 Volt SA 1110 Core 2 5 Volt FPGA Core 2 5 Volt Reference 3 3 Volt for System Supervisor Moe Stooge 12 Volt for Analog Circuits 999 m Crystals 32 kHz Real Time Clock 32kHz SA 1110 3 6864 MHz SA 1110 4MHz 4 devices 1 for each Stooge m StrongARM CPU SA 1110 Containing 32 bit StrongARM RISC Reduced Instruction Set Computer processor core 2 1 MIPS Million Instructions Per Second SDRAM Synchronous Dynamic Random Access Memory Controller MMU Memory Management Unit LCD Controller Parallel 1 O Ports UARTS Universal Asynchronous Receiver Transmitter 999 Revision C MAC 5000 resting ECG analysis system 2 5 2017803 003 Equipment Overview Detailed Description m FPGA Containing 9999999999 StrongARM Boot ROM emulation XBus Controller Video Waveform Scroller Interrupt Controller System Interrupt Generator Acquisition M
15. FPGA and loads remaining code to SDRAM StrongArm running MOE disables 3VM and 5VM Run application software Start up screen displayed MD1322 017E Poor quality ECGs can be caused by factors in the environment inadequate patient preparation hardware failures related to the acquisition module leadwires cables or problems in the unit Use a simulator to obtain an ECG report If the report is good the problem is external to the unit Revision C MAC 5000 resting ECG analysis system 2017803 003 5 5 Troubleshooting General Fault Isolation Visual Inspection A thorough visual inspection of the equipment can save time Small things disconnected cables foreign debris on circuit boards missing hardware loose components can frequently cause symptoms and equipment failures that may appear to be unrelated and difficult to track NOTE Take the time to make all the recommended visual checks before starting any detailed troubleshooting procedures Table 1 Visual Inspection List Area Look for the following problems 1 0 Connectors and Cables Fraying or other damage Bent prongs or pins Cracked housing Loose screws in plugs Fuses Type and rating Replace as necessary Interface Cables Excessive tension or wear Loose connection Strain reliefs out of place Circuit Boards Moisture dust or debris top and bottom Loose or missing components Burn damag
16. Head Select 5 28 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting CPU PCB Input Output Signals Acquisition Module J14 Pin No Signal 1 Power 2 Ground 3 TX RS485 4 TX RS 485 5 RX RS485 6 RX RS 485 7 NC 8 NC 9 NC 10 NC Revision C MAC 5000 resting ECG analysis system 2017803 003 Troubleshooting CPU PCB Input Output Signals For your notes 5 30 MAC 5000 resting ECG analysis system Revision C 2017803 003 O Parts List Revision C MAC 5000 resting ECG analysis system 2017803 003 6 1 For your notes 6 2 MAC 5000 resting ECG analysis system Revision C 2017803 003 Parts List Ordering Parts Ordering Parts General Information TheFRU parts lists in this chapter supply enough detail for you to order parts for the assemblies considered field serviceable To order parts contact Service Parts at the address or telephone number on the How to Reach Us page provided at the beginning of this manual Revision C MAC 5000 resting ECG analysis system 6 3 2017803 003 Parts List Field Replaceable Units Field Replaceable Units The following items may not be assigned separate manufacturing part numbers because they are normally part of a larger assembly Since they are considered field replaceable units FRUs they have specific service part numbers so they can be ordered and
17. Ib without paper 1 without trolley Environmental Item Description Operating Conditions Temperature 10 C to 40 C 50 F to 104 F 1 Relative Humidity Atmosphere Pressure 20 to 95 RH noncondensing 700 to 1060 hPa Revision C MAC 5000 resting ECG analysis system 2017803 003 B 5 Appendix B Technical Specifications Technical Specifications Environmental Continued Item Description Transport S torage Conditions Temperature Relative Humidity Atmosphere Pressure 40 C to 70 C 40 F to 158 F 15 to 95 RH noncondensing 500 to 1060 hPa Disposal Batteries Device Disposing of battery by fire or burning will cause the battery to explode The battery is recyclable Follow local environmental guidelines concerning disposal and recycling Batteries may be returned to GE Medical Systems Information Technologies service for recycling Recyclable 1 Paper discoloration may occur at higher temperatures B 6 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix B Technical Specifications Technical Specifications Safety Item Description Certification UL 2601 1 classified UL classified for CAN CSA C22 2 No 601 1 CB certified for IEC 601 1 CE marking for Council Directive 93 42 EEC concerning Medical Devices Meets applicable AAMI EC 11 requirements Type of Protection Against Electrical Shock Clas
18. The MAC 5000 acquisition module communication protocol is different from previous generations in several key respects 1 Acquisition module timing is synchronized to the system Thereis no longer a need to play synchronizing games to get the system especially the display and printer operating at the same sampling rate as the acquisition module 2 Data is framed and has checksum Previous acquisition modules offered rudimentary error detection This has finally been done nearly right Each ECG data packet contains a checksum 3 Commands do not interrupt the data stream Previous generation acquisition modules required a cessation of sampling to transmit commands to the module This cessation of sampling had the undesirable effect of breaking the acquisition stream for operations as simple as changing the line filter frequency or enabling or disabling the pace pulse detector With the MAC 5000 this restriction is removed 4 Buttons are supported Button state is communicated to the system in each ECG data packet This allows limited operator interaction with the machine via the acquisition module Details A constant reference clock frequency of 1 MHz must be provided tothe acquisition module for generation of its internal sampling clocks To eliminate the need for data lines command information is encoded on this reference clock by altering its duty cycle The FPGA provides a serializer for the command bytes and clock generato
19. a software watchdog that must be serviced by specific BBus activity from the StrongARM Moe himself is monitored by a self contained MAX823 watchdog timer brownout detector Moe must constantly toggle the MAX823 watchdog input pin or suffer the consequences NOTE Moe presumes that the main power rails which it controls are off when it powers up If Moe should malfunction while the system is already powered it is likely that the HCO5 will incorrectly identify itself as Larry Larry s default power up state results in its port pins assuming a state that disables 3V M Since Larry does not service the watchdog chip WDOG another reset will follow within 2 seconds As 3V M is now down Moe will be selected at the next restart When SYSRESET is released Curly configures the FPGA and starts the StrongARM from information stored in the SmartM edia card Moe expects the StrongARM to request status via the BBus interface within a few seconds of startup If that request doesn t arrivein time Moe places the system back in reset and removes power In the event of main CPU failure that causes loss of function yet maintains Moe s watchdog function a manual forced power down function is provided A continuous press of the power key for a period greater than 5 seconds will force the system to shutdown AC Power Battery Charger Battery and system power management is entirely Moe s responsibility An off the shelf 28V 1A universal input power s
20. bit and 256M bit devices may also be used i e the extra address line has been routed to the devices All bus timing and refresh control is performed by the StrongARM processor The SDRAM clock rate is that of the StrongARM s CPU clock or 103 2 MHz Since the clock rate is technically higher than 100 MHz the memory needs to be PC133 compliant Although re programmable via software the present design uses memory with CAS3 data timing FPGA configuration data and system software are stored on a SmartM edia card The system can accommodate sizes from 2M Bytes to 16M Bytes probably larger too as those sizes are announced To reduce loading on the processor address data busses the SmartM edia card is accessed by the StrongARM via theisolated XBus Special gating is provided in the F PGA for the SmartM edia CS pin to reduce susceptibility to accidental writes System setup information option enables and other machine specific data is stored in a 16K Byte serial EEPROM The SPI interfacetothe EEPROM is provided by the FPGA 2 20 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation VGA LCD CRT Interface An internal backlit LCD is home for the MAC 5000 s graphical interface In addition external VGA monitors are supported for stress applications Control for a standard VGA format 640 x 480 pixels LC display is provided by the FPGA A connector is provided for an external CCFL C
21. d o Pd 1 10 Equipment Overview cscceeeeeeeeeeeeeeees 2 1 General Description 00 cece eee eee tee eee e 2 3 doni m TM 2 3 Back VIeW uic eee d o eo omae o a e 2 3 Connector Identification 0 0 0 0 cece eee eee eee e 2 4 Detailed Description cece eee e eee e reece HH 2 5 Block Diagram i doses dial eor ebd 2 8 Theory of Operation esses 2 11 Power Supplies Sit wean teas ape edet Fade E eee ends 2 11 elc dure 2 13 CPU aks oS Sona Siesta mental an naan aaa ate need oe coda toa ate team acs 2 13 PRGA Iintemal Logic cna 5o e ad 2 13 SDRAM ma Sens RU RR Ea a AN 2 20 SmartMedia C ard ai a aret te ect et 2 20 Serial EEPROM o uia ec aere na tec ttr ee tta d nt I EE 2 20 VGA BCDICRTInterfaCe edet ede tacta e 4 2 21 Acquisition Module Transceiver Power Switch aaeeea 2 21 Revision C MAC 5000 resting ECG analysis system i 2017803 003 COMM Port Power Switch Current Limiter o oooooooo o o o 2 22 Thermal Printhead Power Pixel Test Hardware ccc ce eeeeeeues 2 23 Super I O Peripheral Controller sss 2 23 The Four Stooges a ecce cree DR UpCPA RET T EpOMER PADRES 2 24 Untested Nominal Operating Time Specs 0 0 ccc 2 30 inistallalloniss sce veers die ao et as rn s 3 1 Preparation for Use cece cece eee erect eee nnn 3 3 General ink nce asm vege nc yn ete ep GU wen OG Race i pra cir te 3 3 Trolley Height Adjustment
22. g gram acceleration due to gravity GB Great Britain GERM German Germany GND ground digital ground de common GRN green GRY gray H H high vector electrode site vector lead HDLC high level data link control Hex HEX hexagon hexadecimal HH hour HiRes high resolution Hr hour Hydral Hydralazine Hz Hertz cycles per second I I on input vector electrode site I IL III limb leads IC integrated circuit ID identification 1 e that is IEC International Electrotechnical Commission in inch IN input inc inc INC incorporated Info information Ins insert VO input output I P input ISA industry standard architecture Isosorb Isosorbide IT Italian Italy J JAN January JIS Japan Industrial Standards K k K kilo 1000 1024 Kb KB kilobyte kg Kg kilogram kHz KHz kilohertz kV KV kilovolt Kyb keyboard A 6 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix A Abbreviations Standard Abbreviations L L1 L2 LA Ib LCD Lcl Line Ld Grps LED LH Lidoca LL Loc LocPc LogRetry Ltd m M mA MAC mains voltage line level one level two left arm pound liquid crystal display local line lead groups light emitting diode left hand Lidocaine left leg location Local MAC PC log retry limited M meter megabyte metric vector electrode site vector lead male milliamperes Microcomputer Augmented Cardiograph voltage of a supply mains between 2 line conductors of a
23. m power Polarity UUT Line cord Norm l power ine cor Neutral Ea a eutra 7 i Unit I o under l ZON Neutral test Gnd i Rvs UUT l l Gnd I I I I I Meter I 1_ _ connectors _ M13052 01E Test 2 Chassis leakage to ground To be tested power connector on back of tester may not be labeled on some testers Tester Tester pu 2 22 power Pony i UUT Line cord mE power t E Line f cord I cg Neutral i Unit i Neutral under UUT Gnd I Rvs LJ l I I I I Meter _ connectors M13052 02F Revision C MAC 5000 resting ECG analysis system 4 21 2017803 003 Maintenance Domestic Electrical Safety Tests Test 3 Patient cable leakage to ground To be tested power connector on back of tester may not be labeled on some testers Sa ee re es Tester Tester I L power Polarity i UUT T cord Norm power ine I fuss Line 1 cord Neutral gt l __ Neutral Gnd l Rys LZ I Gnd I p di J i 1K i I Meter AAN S i i connectors gi Patient cable AAA A AN AN lt I i SS Re Patient cable connectors M13052 03F Test 4 Patient cable leakage into patient Leads from 120 VAC During this test line voltage is applied to the patient cable connectors To prevent erroneous readings do not allow the leadwires to contact conductive materials such as metal handles
24. polyphase system or voltage between the line conductor and the neutral of a single phase system max maximum Measure measurements Med medications MEM memory MF metal film MHz megahertz min minutes minimum Misc miscellaneous mm millimeter MM minute MMM month mm mV millimeter per millivolt mm s millimeter per second Modem modulator demodulator MOS metal oxide semiconductor MPE metallized polycarbonate expitaxial ms milliseconds MS DOS Microsoft Disk Operating System MTBF mean time between failures mtg mounting MTR MOTOR MUSE Marquette Universal System for Electrocardiography mux multiplexer mV millivolt mVR minus inverted aVR N N neutral MAC 5000 resting ECG analysis system A 7 2017803 003 Appendix A Abbreviations Standard Abbreviations n a not available NA not applicable NC no connection Nitrate nitrates NLQ near letter quality NMI non maskable interrupt NMOS N channel metal oxide semiconductor No number NO normally open norm normal ns nanoseconds NSR Normal Sinus Rhythm O O off original OE other errors OEM original equipment manufacturer OH off hook relay OneSec one sector ORG orange Orig original OUT output OZ ounce P P P wave section of the ECG waveform p p peak to peak PA P wave amplitude Params parameters Passwds passwords PatData patient data PatInfo patient information PATN patient PC printed circuit personal computer PCB printed circuit board pF picofarad Pgm program Pgml
25. port Use cable PN 2008111 001 to connect from the MAC5000 ANA TTL port to the Colin QRS trigger input Device Configuration Requirements None MAC5000 Configuration Requirements At the Main Menu complete the following in the order shown below Select System Setup Enter Systen password Exercise Test Inputs Outputs Change Blood Pressureto Nipon Colin Sun Tech Model Tango Connection Requirements Use cable PN 2008113 001 to connect from the MAC5000 port 1 to the Sun Tech serial port Use cable PN 2008111 001 to connect from the MAC5000 ANA TTL port tothe Sun Tech QRS trigger input Device Configuration Requirements At the Tango Main Menu complete the following in the order shown below Select Utilities Select Device Scroll to ECG Trigger and press enter Scroll to DIGITAL and press enter Scroll to EXIT and press enter Scroll to Test Parameters and press enter With Technique highlighted press enter Scroll to DKA and press enter Scroll to EXIT and press enter Scroll to EXIT and press enter to return to the display screen 9 99999999 MAC5000 Configuration Requirements At the Main Menu completethe following in the order shown below Select System Setup Enter System password ExerciseT est Revision C MAC 5000 resting ECG analysis system 3 15 2017803 003 Installation MAC 5000 ST Requirements and Configuration Inputs Outputs Change
26. prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communi cations equipment transmitters and the MAC 5000 as recommended below according to the maximum output power of the communi cations equipment Separation Distance in Meters m According to Frequency of Transmitter Rated Maximum Output T9021 BOMHZ 150kHzto80 MHZ goin to 800MHz 800 MHz to 2 5 GHz Power of Transmitter in Outside ISM bands in ISM bands Watts d 12 P d 12 JP d 12 p d 2 3 P 0 01 0 12 0 12 0 12 0 23 0 1 0 38 0 38 0 38 0 73 1 1 2 1 2 1 2 2 3 10 3 8 3 8 3 8 7 3 100 12 12 12 23 NOTE 1 At 80 MHz and 800 MHz the separation distance for the higher frequency range applies For transmitters rated at a maximum output power not listed above the recommended separation distance d in meters m can estimated using the equation applicable to the frequency of the transmitter where P is the maximum output power rating of the transmitter in watts w according to the transmitter manufacturer NOTE These guidelines may not apply in all situations Electromagnetic propagation is affected by absorption and reflection from structures objects and people C 6 MAC 5000 resting ECG analysis system 2017803 003 Revision C Appendix C Electromagnetic Compatibility Electromagnetic Compatibility EMC Compliant Cables and Accessories WARNING The use of a
27. replaced by service technicians Contact Tech Support for FRU information for assemblies used on previous configurations NOTE Verify part numbers before ordering service parts field replaceable units See the tech memo series for this product for changes or additions to this list Field Replaceable Units Item Part Number Battery Assembly 900770 001 Power Supply Assembly 421117 001 PCB MAC 5000 CPU 801212 005 Keyboard Assembly 421115 XXX Disk Drive 3 5 inch Laptop Floppy 2001377 001 Cover Disk Drive 417468 002 Display Assembly 2019106 001 Top Cover Label Top Cover NOTE Top Cover amp Label must be ordered together 2017413 001 2008167 001 Printhead 422397 001 Writer Assembly 421108 006 Roller Assembly 422396 006 Writer Release Button 2005920 001 Leaf Spring 417565 001 Gas Cylinder 416015 001 Battery LED Circuit Board 801222 001 MAC 5000 Country Modem PTO Option Class MAC5000 MODEM Country Specific 2005264 0XX MAC 5000 CAM14 PTO Option Class MAC5000_CAM14 Kit CAM14 Resting ECG W AHA Adapter 901142 001 Kit CAM14 Resting ECG W IEC Adapter 901142 002 MAC5000 Keyboard PTO Option Class MAC5000 KEYBRDS 6 4 MAC 5000 resting ECG analysis system 2017803 003 Revision C Parts List Field Replaceable Units Field Replaceable Units Continued
28. so the most negative level at the emitter of the emitter followers is ground Nominal full scale swingis 1VP P blank to white Bias for the base of the clamp transistors is provided by a 1 4V bias supply consisting of a stack of two diode connected transistors QP2 This 2Vbe bias exactly cancels the 2V be shift produced by the level clamp and output buffer Since all transistors are of the same type their Vbe s track well enough to provide acceptable output offset Diode clamps to ground and 3V EMI provide ESD protection for the VGA video and sync signals The 3V EMI rail is isolated from ESD transients by FB13 Acquisition Module Transceiver Power Switch MAC 5000 acquires ECG data with a new generation CAM acquisition module The FPGA provides the interface logic Clocks and commands are transmitted to the acquisition module on a balanced RS485 line Data is received similarly Power to the acquisition module is provided by a software controlled linear regulator Revision C MAC 5000 resting ECG analysis system 2 21 2017803 003 Equipment Overview Theory of Operation Transceiver To reduce EMI and susceptibility to noise the acquisition module link is implemented using RS 485 differential signaling An RS485 interface device provides the single ended to differential conversion in both directions Ferrite beads capacitors and resistors are used to reduce EMI on both sides of the transceiver Acquisition Power Regula
29. supplies the DMA acknowledge signal that gates data to from the Super I O floppy controller via the XBus To ensure no data is lost the floppy DMA request is routed to the StrongARM s FIQ input RS 232 Serial Ports one dual mode RS 232 IrDA Four serial ports are provided on two back panel Mini DIN 8 pin connectors The Super I O device provides two serial ports COM 1 and COM2 and two more COM3 and COM 4 are provided by the SA 1110 StrongARM processor The COM2 serial port and modem handshake lines are found in the COM2 connector COM 1 COM3 and COM4 serial ports use pins in the COM 1 connector The COM2 serial port of the Super I O device also supports the IrDA Infrared Data Association interface RS 232 level shifting is provided by two transceivers Each produces the necessary drive voltages with internal charge pumps The devices are rated to withstand ESD onslaught so no external ESD protection is provided Thetransceivers may be shut down under software control to conserve power Clock Calendar The Super I O device provides a clock calendar function Backup battery power is provided by a super capacitor C98 with sufficient storage capacity to power the clock for hours after main battery removal This backup source provides sufficient time to exchange battery packs when necessary Diode CR14 charges C98 when the main system power is up R83 limits the charging current to a safe level Revision C MAC 5000 res
30. to COM 2 and select the Modem Test The test returns the modem ID number firmware rev and current parameter settings If communication with the modem is unsuccessful the I D and firmware rev display N A Acquisition Module Test Analog l O Tests Analog Output Test Follow the instructions on screen NOTE A shorting bar is required to perform this test Tests if the front end is powered Tests if the front end is communicating Displays the front end lead wire noise Indicates when one of thethree front end buttons is pressed Displays software version of acquisition module Follow the instructions on screen to monitor the analog outputs using an oscilloscope The outputs monitored are m 12V m DC Output 1 m DC Output 2 ECG Output m TTL Trigger Output Four sets of outputs are possible Select the output sets using the arrow pad Revision C MAC 5000 resting ECG analysis system 5 13 2017803 003 Troubleshooting Diagnostic Tests Analog Input Test DCOut Loopback Test Follow the instructions on screen to connect a DC voltageto the DC input pins of the ANA TTL connector The voltage of the DC input displays Follow the instructions on screen to connect the DC Outputs to the DC Inputs The test sends all possible values out the DC Outputs and confirms that the correct values are read from the DC Inputs A pass fail result displays ECGOut QRSTrigger Loopback Test Floppy Drive Tests
31. 0 The SA 1110 is an advanced processor with many integrated peripherals MMU various caches SDRAM controller LCD controller serial 1 O parallel O to name most but not all All of the MAC 5000 s proprietary hardware is contained in a single Xilinx FPGA Field Programmable Gate Array that contains m StrongARM Boot ROM emulation XBus Controller Video Waveform Scroller Interrupt Controller System Interrupt Generator Acquisition Module Interface Thermal Printhead Interface Serial EEPROM Interface BBus Interface Revision C MAC 5000 resting ECG analysis system 2 13 2017803 003 Equipment Overview Theory of Operation m Four PWM Analog Outputs Beep Generator The following descriptions give an overview of the F PGA s functionality For detailed information on the internal circuitry refer to the schematic For a programmer s eye view of the FPGA see the source file nardware h Where appropriate circuitry external to the FPGA is also described StrongARM Boot ROM Emulation Toimprove performance and reduce cost the MAC 5000 does not provide Flash execution memory This makes it necessary to find another method to start the CPU J ust after the StrongARM SA 1110 processor is released from reset it starts to fetch instructions from address 0 of memory enabled by Static Bank Select 0 Normally Bank 0 would be some ROM device that would contain StrongARM code In this design the FPGA provides RAM blocks that ar
32. 1 R174 driven from a StrongARM GPIO line Half of the resulting printhead voltage drop divider R154 155 may be measured to either determine the dot s resistance or at least determine if the dot is open Serial EEPROM Interface A standard four wire SPI interface is provided for connection to a serial EEPROM memory CFGMEM The StrongARM exchanges a byte of data with the EEPROM by writing a valuetotheinterface register Data is clocked at 4 MHz quickly enough that no interrupt support is required The StrongARM polls a ready bit to determine when the transfer is complete BBus Interface There are several I O functions poorly suited to direct control by the StrongARM whether for reasons of software complexity or power consumption These I O functions are provided by three 68H C705 microcontrollers placed strategically around the board Moe Larry and Shemp Each of these three microcontrollers must communicate with the StrongARM BBus is a simple 1 wire point to point interface designed specifically for this purpose The FPGA provides a single BBus transceiver and a 3 way bi directional multiplexer to attach the three BBus microcontrollers For more Bbus information see the microcontroller firmware source files From the programmer s standpoint BBus operates like SPI where each transaction exchanges a single byte between the host and peripheral PWM Analog Outputs Four PWM channels are provided for the generation of analog outputs T
33. 3 Revision C D Troubleshooting Revision C MAC 5000 resting ECG analysis system 2017803 003 5 1 For your notes 5 2 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting Assembly Descriptions Assembly Descriptions Introduction The troubleshooting information in this chapter helps you narrow service problems to one of the replaceable assemblies These assemblies illustrated in the block diagram are discussed in more detail in the individual assembly chapters along with replacement procedures Assembly Block Diagram Isolation Barrier O O Patient Acquisition o Module O Display A PS2 O i comi O com2 Q Anaoa vo E y Backlight J CPU Board nalog 1 0 j Video Out 2 Keyboard IR D 0000000000000 000000000000 00000000000 10000000001 OO DOM Power AC Supply inlet Speaker Writer Thermal Printhead Motor QQ Pack gt Cue S Equipotential Y DOE ac ue Sensor MD1322 014 Revision C MAC 5000 resting ECG analysis system 5 3 2017803 003 Troubleshooting General Fault Isolation General Fault Isolation Power up Self test See the MAC 5000 Operator s Manual Equipment Overview Getting Started to ve
34. 3 003 Installation P reparation for Use 2 Press the Internal Access Button to open the MAC 5000 then plug the cable connector into port A Opening the MAC 500 before attaching the cable clamp allows you to place the correct amount of slack to free the cable from stress when the MAC 5000 needs to be re opened 3 Next fasten the cable and clamp to the clamp bracket then close the MAC 5000 Observe that there is enough slack to allow free movement of the cable when re opening the MAC 5000 Correct amount of cable slack Not enough cable slack 4 Refer tothe MAC 5000 Operator s Manual for information on how to use the Bar Code Reader Revision C MAC 5000 resting ECG analysis system 3 13 2017803 003 Installation P reparation for Use Type S Trolley Assembly 1 Tomount the MAC 5000 to the Type S trolley follow the steps in the illustration below 2 Route patient cable through trolley and fasten with cable clamp as shown below 3 14 MAC 5000 resting ECG analysis system Revision C 2017803 003 Installation MAC 5000 ST Requirements and Configuration MAC 5000 ST Requirements and Configuration Following is a list of interface requirements and setup configurations required for the devices listed when used with the MAC 5000 ST option Compatible Blood Pressure Units Colin Model ST 780 Connection Requirements Use cable PN 2008112 001 to connect from the MAC5000 port 1to the Colin serial
35. 5 17 FPGA Field Programmable Gate Array 2 13 FPGA internal logic 2 13 G GPIO General Purpose Input Output 2 16 l interface acquisition module 2 17 BBus 2 19 serial EEPROM 2 19 thermal printhead 2 18 VGA LCD CRT 2 21 video 2 15 interrupt controller 2 16 IrDA Infrared Data Association 2 23 IRQ Interrupt ReQuest 2 16 K KISS pump 2 4 2 12 2 22 L list of abbreviations A 3 location number 5 18 M MIPS Million Instructions Per Second 2 5 MMU Memory Management Unit 2 5 modem test 5 13 N NiMH Nickel Metal Hydride 2 28 0 operating conditions B 5 pace detection B 3 paper B 4 passwords 5 19 patient data 5 20 patient questions 5 18 power supplies 2 11 product code 1 9 1 10 PS 2 keyboard port 2 6 PWM analog outputs 2 19 R RISC Reduced Instruction Set Computer 2 5 RTC Real Time Clock 2 13 S SDRAM Synchronous Dynamic Random Access Memory 2 5 serial EEPROM 2 20 serial EEPROM interface 2 19 serial number 1 8 SmartMedia card 2 20 SmartMedia Flash 2 5 storage conditions B 6 storage of ECGs 5 17 StrongARM boot ROM emulation 2 14 super I O and FPGA 2 13 symbols on equipment 1 7 system interrupt timer 2 17 system setup 5 17 5 18 T test acquisition module 5 13 analog input 5 14 Revision C MAC 5000 resting ECG analysis system Index 3 2017803 003 Index analog output 5 13 COM port loopback 5 13 DCOut loopback 5 14 ECGOut QRStrigger loopback 5 14 modem 5 13 theory of oper
36. 6 level shifts Moe s output to the level required to turn off Q7 during off periods Battery Gauge Current flow into and out of the battery pack is monitored by Moe via a MAX472 Battery Current Monitor By integrating the current flow Moe is able to maintain a reasonable estimate of the battery pack s state of charge Moe s A D converter hasn t sufficient dynamic range to cover the full range of system currents at high resolution so some compromises must be made The current monitor s full scale range is set to a value that is likely to encompass normal operating currents Peaks above this level 6Amps are clipped The effects of this clipping are minimal as such high density printing occurs for short periods of time and represents only a small portion of system energy consumption Quantization error limits the ability to measure the small current that flows when the system is off To compensate for this Moe presumes a small constant quiescent current flow from the battery This flow serves to drain the gauge at a rate estimated to mimic the self discharge and system quiescent current draws Current monitor gain is set by R6 and is nominally 1 8A V for a full scale 3 3V current of 6Amps A low pass filter R7 and C1 provides filtering to remove switching noise from the signal Untested Nominal Operating Time Specs These specifications are affected by battery pack characteristics While they are of interest it is not possible t
37. Barcode Scanner Kit Italian 2018626 006 Barcode Scanner Kit Norwegian 2018626 009 6 6 MAC 5000 resting ECG analysis system 2017803 003 Revision C Parts List Field Replaceable Units Field Replaceable Units Continued Item Part Number Barcode Scanner Kit Danish 2018626 010 Barcode Scanner Kit Czech 2018626 011 Barcode Scanner Kit Hungarian 2018626 014 Barcode Scanner Kit Po ish 2018626 015 Magnetic Card Reader Kit English 2018627 001 Magnetic Card Reader Kit German 2018627 002 Magnetic Card Reader Kit French 2018627 003 Magnetic Card Reader Kit Spanish 2018627 004 Magnetic Card Reader Kit Swedish 2018627 005 Magnetic Card Reader Kit Italian 2018627 006 Magnetic Card Reader Kit Norwegian 2018627 009 Magnetic Card Reader Kit Danish 2018627 010 Trolley Caster Fixed Anti Static 2017784 002 Trolley Caster Swivel Anti Static 2017785 002 Trolley Caster Kit Anti S tatic 2024418 001 North American MobileLink Ultra High Security Assembly 2023922 001 North American MobileLink Assembly 2014403 002 European MobileLink Assembly 2014403 003 Revision C MAC 5000 resting ECG analysis system 2017803 003 6 7 Parts List Field Replaceable Units For your notes 6 8 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix A Abbreviations
38. Blood Pressureto Suntech Ergoline Model Ergoline 900 Connection Requirements Use cable PN 2008110 001 to connect from the MAC5000 port 1to the Ergoline serial port Use cable PN 2008115 001 to connect from the MAC5000 ANA TTL port tothe Ergoline QRS trigger input Device Configuration Requirements See Ergoline 900 Operator s Manual MAC5000 Configuration Requirements At the Main Menu complete the following in the order shown below Select System Setup Enter System password Exercise Test Inputs Outputs Change Blood Pressureto Ergoline Ergometer 999 Compatible GE Medical Systems nformation Technologies Treadmills Analog Treadmills Model T2000 Connection Requirements Use cable PN 2007918 001 T2000 to connect from the MAC5000 port 1tothe treadmill serial port Device Configuration Requirements None MAC5000 Configuration Requirements Use the Edit Protocol application to set the protocol Test Type to Treadmill in MPH or Treadmill in Km H for protocols that will be used with this treadmill Connection Requirements There are no cables available from GE Medical Systems nformation Technologies to interface to analog treadmills The customer is responsible for making the appropriate cable Speed and grade signals for controlling analog treadmills are available on pins 2 Slow Analog Output and 8 Fast Analog Output of the ANA TTL port Pins 1 4 and 5 are tied to ground Device Configurat
39. Control Battery E Sense Battery Sense Battery Temperature 4 D A Sh6 Analog I O Speaker Driver JI Sh9 MNX490 AM 110 114 Serial Memory Sh9 Sh15 4 16K From StronecARM Address Bus Also contains COM 3 4 SmartMedia TX RX MAX213 Card Sh14 Sh2 Super I O Peripheral Controller MD1322 011R Revision C MAC 5000 resting ECG analysis system 2 9 2017803 003 Equipment Overview Detailed Description For your notes 2 10 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation Theory of Operation Power Supplies The MAC 5000 requires several regulated voltages for operation of its various components The Main Regulator provides most of the supply rails The supply rails are 3V C MAC 5000 is never truly off The system supervisor microcontroller MOE must constantly monitor the power key and perform battery charging gauging The clock calendar in the Super I O chip must also maintain time date when the machineis off These functions are powered from the 3V C rail which provides power continuously from the battery pack regardless of the state of the rest of the system The Main Regulator produces 3V C directly from the battery rail via an internal low current linear regulator Only 5 mA are available from 3V C so it must be used sparingly NOTE The MAX782 s low current regulator is dreadfully inef
40. DSR COM4 RxD Revision C MAC 5000 resting ECG analysis system 5 21 2017803 003 Troubleshooting Input and Output Connectors COM Pins J5 Analog Pins J6 Table 4 COM2 Pins J5 Y 5 Name RTS CTS TxD Ground RxD DTR 12V DSR Co GD U1 A wj N 9 Table 5 Acquisition Module Connector J6 a 5 Name 12V DC Output 1 TTL Trigger Output Ground 5 4 00000 Ground 0000 DC Output 2 DC Input 1 ECG Output DC Input 2 CO y GD OT A wj N 9 5 22 MAC 5000 resting ECG analysis system 2017803 003 Revision C Troubleshooting Input and Output Connectors EXT VID Pins J7 Table 6 External VGA Video J7 Pin Name 1 Red Video 2 Green Video 3 Blue Video 4 Ground 5 Ground 6 Ground 7 Ground 8 Ground 9 NC 10 Ground 11 Ground 12 NC 13 Horizontal Sync 14 Vertical Sync 15 NC Revision C MAC 5000 resting ECG analysis system 2017803 003 Troubleshooting CPU PCB Input Output Signals CPU PCB Input Output Signals Battery Pack Monitor J2 Pin No Signal 18V Battery Power 18V Battery Power Battery Temperature Sense 3V Temperature Sense Power Battery Ground Dj UI A wt N m Battery Ground LCD Backlight J4 Pin No
41. Data NOISE rc cia aria a dd 5 15 Missing ACI TIPI Report ccc cece e 5 15 No BP from External Device 0 cece cece ee 5 15 Treadmill Ergometer Does Not Move ccc cece cece cece eeees 5 15 SyStemiEITOFS tara 5 16 Frequently Asked Questions cceceeeeneeeeeeeeeeeeteeeaeeaee 5 17 Maintenance soi tae s aduer en Ete ko eh er E IAEA a RU Sato b 5 17 SECRET 5 17 Stress 5 17 Formata DISK 15 2 5 rotate te Ras e eoa cet aen IDEA 5 17 SIE ERE 5 17 Battery apacily loo Merk ute i dte Me s ue 5 18 Systems etup cs s cus ooo ta ct eps ut eee tee ape enti n eos 5 18 Location Number sninn a rS TIR ERR s 5 18 Patient Questions zo eter rau dares potrei ri C dase pra Dan 5 18 PassWOIds cues cce ceca m eio c dec s i ees 5 19 Clinical sso hMpReEPURRERRRMERRPEMPp eETO etarras 5 19 Repo ME Maat 5 19 HIRES and P hEReS coronas esee eee dea gods 5 19 Ei E e nd be ers ri nd EE CC 5 19 Entering PatientData cc cece cece eee 5 20 TRANSMISSION cra nr iaa caret o Rath eee RAS 5 20 Losing Fields When Transmitting ccc cceeeeeeeee ne 5 20 Input and Output Connectors 6 ccc cece eee eee eee 5 21 AI A LTEM 5 21 COM1 COM3 4 Pins J 3 ei seed excrement eere e e 5 21 COMPS JS skits dd id 5 22 AnS ai AA 5 22 IA A ic e ecco te tior gegen Faden 5 23 CPU PCB Input Output Signals seen 5 24 Battery Pack Monitor Zi t drea cor ceo tare 5 24 LGD Backlight la not edo RO teca e Fco ES 5 24 iv MAC 5000 res
42. Diskette Format Failure Follow the instructions on screen to connect the ECG Output and TTL Trigger Output to the DC Inputs The test sends all possible values out the ECG Output and a square wave out the TTL Trigger Output It confirms that the correct values are read from the DC Inputs A pass fail result displays Follow the instructions on screen A read write test is performed on a formatted floppy disk and a pass fail test result is displayed Try another disk if this test fails If this test continues to fail contact GE Medical Systems I nformation Technologies for service NOTE The following test and the resultant values are for manufacturing use only and NOT intended for service of this device A head radial alignment and Azimuth alignment test is performed using an Accurite test disk part number is displayed on screen Alignment test values will be displayed Unformatted diskettes may cause the message Please insert a data diskette to appear and not allow the MAC 5000 to force a format Remove the diskette from the MAC 5000 and format the diskette on a PC After formatting try it on the MAC 5000 again If it fails again replace the diskette and repeat the procedure 5 14 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting Diagnostic Tests Equipment Problems ECG Data Noise If the acquired ECG data displays unacceptable noise levels Missing ACI TIPI Report No BP from Exte
43. MAC 5000 Resting ECG Analysis System Service Manual 2017803 003 Revision C GE Medical Systems Information Technologies gemedical com NOTE The information in this manual only applies to MAC 5000 It does not apply to earlier software versions Due to continuing product innovation specifications in this manual are subject to change without notice MUSE CASE MAC MARS and 12SL aretrademarks owned by General Electric Company All other marks are not owned by GE and are instead owned by their respective owners 2003 2004 General Electric Company All rights reserved T 2 MAC 5000 resting ECG analysis system Revision C 2017803 003 13 August 2004 Contents Introduction cd tae P Rm ERERER 1 1 Manual Information ssseeeeeeeen mm 1 3 Revision History 6 ccc cece eter tee ir 1 3 Manual P Urp0se corria rr eae ME PPSPR AMETS 1 3 Intend d A dlence s sn a iri ra e arde ee ttc ca 1 3 Warnings Cautions and Notes ccee cece eee eee eee eee eeaes 1 4 Safety Messages ete ht ne ne Ren Poe de ewe oe 1 5 Responsibility ofthe Manufacturer isses 1 5 Generali raten A cep n E Babee ae y 1 5 Equipment Symbols sssssseeennnn nnne 1 7 Service Information lt s ssaa ta Karr cece cece eee rr 1 8 Service Requirements 20 0 0 cece cece erent ttn e as 1 8 Equipment Identification 0 0 cece cece etree e 1 8 Rotm tA i e eo ia a la den em eA 1 9 Fma B zisa dore Ate
44. Manufacturer s Declaration Electromagnetic Immunity C 4 Guidance and Manufacturer s Declaration Electromagnetic Immunity C 5 Recommended Separation Distances 0 cece cece C 6 Compliant Cables and Accessories sisse C 7 Revision C MAC 5000 resting ECG analysis system V 2017803 003 For your notes vi MAC 5000 resting ECG analysis system 2017803 003 Revision C l Introduction Revision C MAC 5000 resting ECG analysis system 2017803 003 1 1 For your notes 1 2 MAC 5000 resting ECG analysis system Revision C 2017803 003 Introduction Manual Information Manual Information Revision History Manual Purpose Intended Audience Each page of the document has the document part number and revision letter at the bottom of the page The revision letter identifies the document s update level The revision history of this document is summarized in the table below Table 1 Revision History PN 2017803 003 Revision Date Comment A 25 September 2003 Initial release of this document B 27 October 2003 Made editorial changes throughout the manual C 13 August 2004 Made editorial changes throughout the manual This manual supplies technical information for service representative and technical personnel so they can maintain the equipment to the assembly level Use it as a guide for maintenance and electrical repairs considered field repairable
45. ROM read only memory RPA R wave amplitude RPD R wave duration rpt Rpt report RTC real time clock RTI relative to patient input RTN return RVS reverse R W read write S 12SL 12 simultaneous leads s S second select switch Revision C MAC 5000 resting ECG analysis system A 9 2017803 003 Appendix A Abbreviations Standard Abbreviations SA SB SCL SD SE sec sec s SEER SING SP SPA SPDT SRAM ST T standrd Standrd STD STE STJ STM stmts Stmts supply mains s wave amplitude slow blow safe current limits schematic diagram S wave duration serial input output errors second seconds Solid state Electronic ECG Recorder Singapore Spanish S wave amplitude single pole double throw static RAM ST T wave section of the ECG waveform standard standard ST segment displacement at the end ST segment displacement at the J point ST segment displacement at the mid point between STJ and STE statements permanently installed power source SVT power cord type 300 V sw SW switch software SW Swedish Sweden T T Tone touch tone TA T wave amplitude Tant tantalum TDML treadmill TE timeout errors Tech technical Thiazid Thiazide TM trademark Tot total TP test point TPA T wave amplitude TRAM Transport Remote Acquisition Monitor Tricyli Tricylic antidepressant TTL transistor transistor logic TTL levels TVS transient voltage suppressor U UE undefined errors uF microfarad UL Underwriters
46. WT MAC 5000 resting ECG analysis system NOTE Earlier versions used MP and MH see the serial tag on your device for the product code H year manufactured 9 1999 0 2000 1 2001 and so on month manufactured A anuary B February C 2 March D April E May F une G J uly H August J September K October L November M 2 December Revision C MAC 5000 resting ECG analysis system 1 9 2017803 003 Introduction Service Information Format B HHEH HH HH 2E E F Table 3 Equipment Identification Format B Product Code B Year Manufactured 00 99 00 2000 01 2001 02 2002 and so on Fiscal Week Manufactured Production Sequence Number Manufacturing Site n m gj oO Miscellaneous Characteristic 1 This manual applies to MAC 5000 with Product Code AAY 1 10 MAC 5000 resting ECG analysis system 2017803 003 Revision C 2 Equipment Overview evision MAC 5000 resting ECG analysis system 2017803 003 For your notes 2 2 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview General Description General Description Front View The MAC 5000 resting ECG analysis system is a 15 lead 12 channel system with a 10 4 inch 264 mm diagonal display active patient cable battery operation and late potential electrocardiography There are also options for communication capabilities Display
47. Where necessary the manual identifies additional sources of relevant information and or technical assistance See the operator s manual for the instructions necessary to operate the equipment safely in accordance with its function and intended use This manual is intended for the person who uses maintains or troubleshoots this equipment Revision C MAC 5000 resting ECG analysis system 1 3 2017803 003 Introduction Warnings Cautions and Notes Warnings Cautions and Notes The terms danger warning and caution are used throughout this manual to point out hazards and to designate a degree or level or seriousness Familiarize yourself with their definitions and significance Hazard is defined as a source of potential injury to a person Term Definition DANGER Indicates an imminent hazard which if not avoided will result in death or Serious injury WARNING X Indicates a potential hazard or unsafe practice which if not avoided could result in death or serious injury CAUTION Indicates a potential hazard or unsafe practice which if not avoided could result in minor personal injury or product property damage NOTE Provides application tips or other useful information to assure that you get the most from your equipment 1 4 MAC 5000 resting ECG analysis system Revision C 2017803 003 Introduction Safety Messages Safety Messages Additional safety messages may be found throughout this manual that provi
48. agnostic Tests Writer Tests Run the writer tests to check the motor speed control paper speed paper tracking paper cueing and print head quality During the tests make the following general checks m Thefirst character printed should not be distorted This checks start up speed The writer should not skew or crush either edge of the paper m Thelargetriangles and diagonal lines printed across the pages should be straight and uniform without curves or wavering The perfs should align with the tear bar on the door after cueing Paper travel should be smooth C Scan Tests 1 2 amp 3 These tests are combinations of test pattern and the roller test They are used by the writer vendor 50 mm s Test Pattern I 25 mm s Test Pattern I amp 5 mm s Test Pattern These test patterns check the motor speed control and the paper speed Verify that the length of the printout from start to finish is 250 mm 5 mm Use the grids located on the top and bottom of the page for reference Do this for each of the three tests zeae ne ene ed REM EH MD1322 012 Roller Test Uneven darkness can appear if AC power is on during this test After cueing printing should start at approximately 13 14 mm on the page 5 10 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting Diagnostic Tests The pattern appears as diagonal light and dark wavy bands MD1322 013 Isolated light spots ind
49. al Systems Information Technologies Problem Cause Solution pal appears on the screen No battery is installed in the system Install a battery and connect the system to an AC wall outlet to charge the battery flashes intermittently The battery charge is low Connect the system to an AC wall outlet to charge the battery SS appears on the screen e The writer door is open Close the writer door The system does not power up when operating from battery power The battery is empty Connect the system to an AC wall outlet to charge the battery The system shuts down when operating from battery power Battery is empty or the Automatic Shutdown feature is enabled Connect the system to an AC wall outlet to charge the battery or power on the system X Lead disconnected message appears Electrode s disconnected Reconnect the electrode s MODEM ERROR The remote device is not responding Would you like to retry Modem not connected If wireless option Client bridge not connected Connect and retry Wireless option only MAC 5000 is not within range of access point Relocate MAC 5000 to within range of access point and retry transmission Cannot use the system because Device Password does not work Device Password has been changed or has not been adequately communicated to the Staff Override the Device Password prompt by pressing t
50. and FPGA Both of these devices uses the 24 MHz clock oscillator Y3 to drive their internal requirements for various clock frequencies The main function of the Super I O IC is the floppy drive interface and all the needed timing comes from this oscillator The FPGA provides many functions including the acquisition interface the printer interface and the Stooges interface Bbus to name a few The FPGA uses a built in frequency doubler to raise this 24 MHz clock to 48 MHz for internal use all other needed clock frequencies are derived from this clock CPU StrongARM LCD Controller The StrongARM processor provides its own clock and runs at 206 4 MHz The processor also generates many other clocks for other functions housed in the same IC All of these clocks are derived from a built in clock synthesizer which uses an external 3 6864 MHz crystal The SDRAM clock runs at 103 2 MHz TheLCD controller runs at 25 8 MHz And all baud rates required by the internal serial ports are also derived from the clock synthesizer CPU Stooges Each of the four Stooges has its own 4 MHz ceramic resonator for use in generating their respective clocks RTC Real Time Clock The RTC of the system is provided as a part of the Super I O controller The timing for this function is derived from its own 32 768 kHz crystal The Intel StrongARM SA 1110 CPU chosen for its high performance low power consumption and high code density is at the heart of MAC 500
51. ation 2 11 thermal printhead cleaning 4 5 thermal printhead interface 2 18 transmission of ECGs 5 20 treadmill connector 2 4 U UART Universal Asynchronous Receiver Transmitter 2 5 V vectorcardiography B 4 VGA LCD CRT interface 2 21 video interface 2 15 WwW wheel replacement 4 17 writer speed B 4 X XBus controller 2 15 Index 4 MAC 5000 resting ECG analysis system Revision C 2017803 003 GE Medical Systems Information Technologies gemedical com World Headquarters GE Medical Systems Information Technologies Inc 8200 West Tower Avenue Milwaukee WI 53223 USA Tel 1 414 355 5000 1 800 558 5120 US only Fax 1 414 355 3790 European Representative GE Medical Systems Information Technologies GmbH Munzinger StraBe 3 5 D 79111 Freiburg Germany Tel 49 761 4543 0 Fax 49 761 45 43 233 Asia Headquarters GE Medical Systems Information Technologies Asia GE China Co Ltd 24th Floor Shanghai MAXDO Center 8 Xing Yi Road Hong Qiao Development Zone Shanghai 200336 P R China Tel 86 21 5257 4650 Fax 4 86 21 5208 2008
52. ccessories transducers and cables other than those specified may result in increased emissions or decreased immunity performance of the equipment or system The table below lists cables transducers and other applicable accessories with which GE Medical Systems claims EMC compliance dv supplied accessories that do not affect EMC compliance are not induded Part No Description Maximum Lengths 900770 001 MAC Pac Battery NA 900995 001 CAM 14 NA 2016560 001 Cable Assembly Host MAC 5000 1 7m 2016560 003 Cable Assembly Host MAC 5000ST 5 4m 901142 001 Kit CAM 14 Resting W AHA Adaptors NA 901142 002 KitCAM 14 Resting W IEC Adaptors NA 400073 001 Serial Comm Cable 8 Pin Mini DIN 6 1m 416070 001 External Video Cable 1 8m 700520 002 Analog TTL Interface Cable 3 0m 2007918 001 Treadmill Cable MAC 5000ST to T2000 6 0m 405535 006 Power Supply Cord US 13A 125V 3 0m 401855 001 Power Supply Cord European 10A 250V 2 5m 401855 002 Power Supply Cord British 10A 250V 2 5m 401855 003 Power Supply Cord Italian 10A 250V 2 5m 401855 004 Power Supply Cord Israeli 10A 250V 2 5m 401855 007 Power Supply Cord Swiss 10A 250V 2 5m 401855 008 Power Supply Cord Indian 10A 250V 2 5m 401855 010 Power Supply Cord Australian 10A 250V 2 5m 2005264 XXX MAC 5000 External Modem Kit NA 2018626 XXX MAC 5000 Barcode Scanner Kit NA 2018627 XXX MAC 5000 Magnet
53. cue hole This condition is reported as a Paper Fault 2 26 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation Paper Out Detection Larry reports excessive paper travel without sensing paper as a paper out condition Analog Inputs Larry digitizes four analog inputs at eight bits resolution each Two inputs handle external analog signals such as those produced by ergometers or analog output blood pressure monitors Thermal printhead temperature is measured for use in compensating strobe pulse width to maintain constant print density over a wide range of thermal printhead temperatures The output of the thermal printhead pixel test hardware is also digitized to allow the resistance measurements on individual print elements Moe Moe is responsible for controlling and monitoring the battery power supplies on off key system reset and related functions Moe runs continuously from 3V C even in the absence of AC power This continuous operation is necessary for Moe to accurately monitor the battery state of charge and detect power key presses System Startup When the system is off and the user presses the power key Moe begins the startup sequence If the battery contains sufficient charge or if AC power is applied the main CPU board power supplies 3V M and 5V M are enabled and after a suitable stabilization period SY SRESET is released Moe then keeps tabs on the system via
54. d easily identified with a few port pin tests Once the identity is discovered the code jumps to the appropriate entry point in the unified image and microcontroller assumes the desired personality The flow for the WhoAml routine is as follows m Run ChkMoe Basically if the BBus PD5 is low we are Moe Since Moe controls the power supply for 3V M which is off at the moment the BBus pull up resistors will actually pull the BBus lines low This can only occur with Moe since all other Stooges are powered by 3V M Moeis powered by 43V C instead m Run ChkCurly First drive the BBus PD5 low if the IRQ line stays high weare Curly Curly is the only Stooge that does not usethe BBus and the connection from BBus PD5 to the IRQ lineis not necessary Curly s IRQ pin is tied to 3V M and is therefore always high m Run ChkShemp If bit 4 of Port A is high we are Shemp At this point we are either Shemp or Larry Shemp has pull up resistors on Port A sobit 4 should behigh Larry on the other hand has uses Port A todrive a makeshift DAC Since Port A is not being driven at the moment bit 4 will be pulled to low via the common DAC resistor R136 which is grounded m We must be Larry At this point we have eliminated all other Stooges 2 24 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation BBus Three of the four stooges Moe Larry and Shemp communicate with the StrongARM
55. d program identification Phenoth Phenothiazide Phenytn Phenytoin PID patient identification digit PLCC plastic leadless chip carrier PM power module pm PM post meridiem preventive maintenance PM 2 Power Module 2 PM 3 Power Module 3 pn PN part number PNH pan head PPA P wave amplitude PR ECG signal interval Pro Off progressive offset Procain Procainamide PROM programmable read only memory Propran Propranolol PSK phase shift keying MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix A Abbreviations Standard Abbreviations PSU power supply unit Psych psychotropic PUP pull up signal PVC polyvinyl chloride PWM pulse width modulation PWR power PWR CRD power cord Q Q transistor QA quality assurance Q wave amplitude QAD Quality Assurance Deviation QAM quadrature amplitude modulation phase and amplitude modulation QC quality control QD Q wave duration QRS QRS complex portion of ECG waveform interval of ventricular depolarization QT QRS interval QTC QRS interval QTY quantity Quinid Quinidine R R resistor red reset RA right angle right arm or R wave amplitude RAM random access memory RC resistor capacitor RD R wave duration Ref reference refresh REN Ringer Equivalence Number Reserp Reserpine REV revision RevdBy reviewed by RevXmit reverse transmission rf radio frequency RFI radio frequency interference RGB red green blue RI ring indicate RL right leg RMR Rhythm and Morphology Report
56. de appropriate safe operation information DANGER Do not use in the presence of flammable anesthetics WARNINGS This is Class 1 equipment The mains plug must be connected to an appropriate power supply Operate the unit from its battery if the integrity of the protective earth conductor is in doubt CAUTIONS This equipment contains no serviceable parts Refer servicing to qualified service personnel U S Federal law restricts this device to the sale by or on the order of a physician Responsibility of the Manufacturer General GE Medical Systems nformation Technologies is responsible for the effects of safety reliability and performance only if Assembly operations extensions readjustments modifications or repairs are carried out by persons authorized by us The electrical installation of the relevant room complies with the requirements of the appropriate regulations The equipment is used in accordance with the instructions for use The intended use of this device is to record ECG signals from surface ECG electrodes This device can analyze record and store electrocardiographic information from adult and pediatric populations This data can then be computer analyzed with various algorithms such as interpretive ECG and signal averaging for presentation to the user This device is intended for use under the direct supervision of a licensed health care practitio
57. ding access to the complete color space offered by the LCD panel The color mapped LCD data is also fed to three external discrete 6 bit DAC s to create analog video for an external CRT Blank Sync External VGA monitors are supported with two styles of video sync signal as well as retrace blanking Video Sync The horizontal and vertical sync pulses from the LCD controller are combined to produce a composite sync signal that is added to the video signal The video sync signal may be disabled under software control to accommodate monitors that do not accept sync on green The sync signal is applied to all three video guns to eliminate color shifting in systems that do not perform blank level video clamping TTL Sync For monitors that do not accept sync on green TTL logic level horizontal and vertical sync signals are provided These may be enabled disabled to implement a rudimentary sleep operation on Energy Star compliant monitors Blank Unlike LC displays CRT s emit light from more than just their active display surface The electron beam is visible even during retrace and precautions must be taken to ensure that the guns are off in non active areas of the display To ensure black borders on external monitors and reset the DC restore clamps in the video output buffers The CLUT video passes through a gating register before leaving the FPGA This allows the LCD DE Display Enable signal to force the guns toa blanking level
58. during inactive portions of the display frame Interrupt Controller On previous versions of the CPU board the StrongARM processor SA 110 supported two external interrupts FIQ Fast Interrupt Request and IRQ Interrupt ReQuest The FPGA expanded those inputs to service numerous sources of interrupts in the FPGA internal logic and Super I O Each interrupt source was routed to either the FIQ or IRQ pin and the FPGA provided each a writable enable bit and a readable status bit The StrongARM processor used in this design the SA 1110 provides access to the FIQ and IRQ inputs of the interrupt controller via the GPIO General Purpose Input Output lines Although any of the GPIO lines can be used to generate an interrupt GPIO lines GPO and GP 1 are reserved for FIQ and IRQ respectively These two inputs are attached to the FPGA asin previous designs and the FPGA interrupt controller function is similar to that of previous board versions to minimize the 2 16 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation impact on software design For more detail on the operation of the interrupt mask status registers see the source file hardware h System Interrupt Timer A 1 kHz timer generates system interrupts which may be routed to FIQ or IRQ once every millisecond This interrupt provides the foundation for all operating system timers Acquisition Module Interface Overview
59. e manual We recommend that you perform these tests Before applying power for the first time Every 6 months as part of routine maintenance Whenever internal assemblies are serviced NOTE The accuracy of the leakage tests depends on the properly wired wall outlet Do not proceed until you verify the integrity of the power source WARNING Total system leakage must not exceed 300 microamperes Table 2 Leakage Tests and Maximum Allowable Leakage Currents Test Maximum Current uA 1 Ground wire leakage to ground 300 2 Chassis leakage to ground 100 3 Patient cable leakage to ground 10 4 Patient cable leakage into patient leads from 120 V ac 20 NOTE Maximum Current readings for Tests 3 amp 4 apply to the MAC 5000 at 120 VAC only and do not apply to other equipment 4 20 MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Domestic Electrical Safety Tests Leakage Test Diagrams These diagrams show only a representation of how a typical leakage current tester functions Follow the instructions provided with the leakage current tester that you use Test 1 Ground wire leakage to ground To be tested power connector on back of tester may not be labeled on some testers a Tester Tester
60. e or smell of over heated components Socketed components not firmly seated PCB not seated properly in edge connectors Solder problems cracks splashes on board incomplete feedthrough prior modifications or repairs Ground Wires Wiring Loose wires or ground strap connections Faulty wiring Wires pinched or in vulnerable position Mounting Hardware Loose or missing screws or other hardware especially fasteners used as connections to ground planes on PCBs Power Source Faulty wiring especially AC outlet Circuit not dedicated to system Power source problems can cause static discharge resetting problems and noise 5 6 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting Diagnostic Tests Diagnostic Tests Introduction Verify that the MAC 5000 resting ECG analysis system operates properly by running the diagnostic tests These tests check the operation of the display screen speaker keyboard thermal writer battery and communication Detailed information displays on screen Loading the System Diagnostics 1 Select Main Menu on the Resting screen 2 Select More 3 Select System Setup 4 At the prompt type the word system the password set at the factory then press the Enter key If the password was not changed the System Seup menu appears If the menu does not appear use the master password If the system s unique password is inaccessible create one foll
61. e used to emulate the boot ROM at bank 0 Early in system start up after the bootstrap microcontroller Curly has configured the FPGA Curly extracts instruction bytes from the SmartM edia card and presents them to the F PGA Each instruction byte is loaded into the FPGA via the signal FRDY BRDY Curly asserts the SmartM edia F RE signal while simultaneously driving the FRDY BRDY signal to improve the transfer rate Curly does not examine the instruction bytes they are loaded from the SmartM edia card into the FPGA in a flyby fashion This process continues until all of the Boot Code tag B2 is loaded into the Boot emulation RAM Boot RAM of the FPGA A more complete explanation of the bootstrap process is presented in Curly s source code Although the Boot Code is written into the Boot RAM as byte wide data the data as read by the SA 1110 will be as words 32 bits wide The Boot RAM is far too small and Curly s read rate is far too slow to load all operating code from the card so only the simple bootstrap program B2 is copied This program contains code that allows the StrongARM to access the SmartM edia card directly through the FPGA Once that initial bootstrap is loaded Curly disconnects from the circuit tri states all SmartM edia control lines and releases the StrongARM processor from reset by removing the ARMRESET signal StrongARM execution begins and the remaining system code is read from the card at high speed Curly then li
62. e ven acte ra 5 5 Vis alilnispection srini 55 5 5 9 X mo radar ade CRURA er pees 5 6 Diagnostic Tests 1 2 oe cs 5 7 hi ap mm 5 Loading the System Diagnostics sss 5 7 Substitute Master Password 0 citi cece 5 7 System Diagnostics MainMenU 1 ccc ccc eet eens 5 8 Display Test citar rad Babin bad ebore alate easy Mae eda 5 8 Pixel Verification Test csse ene 5 8 Grey Scale Test Patterns isses 5 8 Speaker Test Leones rra ero Apte erat detonar 5 9 Keyboard TeSt uc bv tat sh e b DET tal ae n EUR o ere 5 9 P S2 Poft E6SU os cic det seed ee die poe he e eic Pec EEr S ets 5 9 Wanter Tests a oer ae citrate d p dae dr E HC eee 5 10 Battery Tests riera ora reses 5 12 Battery Status reci areae Rd eco ata Pec aes a 5 12 Battery DischargeTest isse 5 12 Revision C MAC 5000 resting ECG analysis system iii 2017803 003 Battery Charge Tesis i ee cee ea 5 12 Print Charge Discharge Test Results 5 12 Communicatiori Tests sud widest sce eh C eme on vC Den 5 13 COM Port Loopback Testo ect cnc 5 13 Modem Tests i c ir inc 5 13 Acquisition Module Test 5 13 Analog HO Tests it TED 5 13 Analog UEDUE Te5L rusa rara sor a 5 13 Analog nputTes tia taaan des bast 5 14 DC Qut Loopback T 85b ute ond edt Meu utt 5 14 ECGOut QRSTrigger Loopback Test sisse 5 14 Floppy Drive Tests ssc acci ie etae evade 5 14 Diskette Format Failure esses 5 14 Equipment Problems cccec cece cece mmn 5 15 EC
63. ed for one of two heights 92 07 CM 36 25 inches or 84 45 CM 33 25 inches The trolley is normally shipped at the 92 07 CM 36 25 inches height but can be changed to fit your needs To change to the lower height use the following steps 1 Tip thetrolley on its side and using a 1 2 inch socket remove the four outer 1 2 bolts and slide the base assemble up on the column 2 Remove the remaining bolts and mounting plate 3 4 MAC 5000 resting ECG analysis system Revision C 2017803 003 Installation P reparation for Use 3 Flip the mounting plate and reverse the procedure CAUTION Do not over tighten Over tightening the bolts may cause them to strip Revision C MAC 5000 resting ECG analysis system 2017803 003 3 5 Installation P reparation for Use Installing the MAC 5000 Tosecure the MAC 5000 to the trolley assembly follow these steps 1 Lock the wheels to prevent the trolley from rolling 3 Placethe unit on the trolley surface then slide it on until the unit is firmly in place and under the tab at the rear of the on the tray 3 6 MAC 5000 resting ECG analysis system Revision C 2017803 003 Installation P reparation for Use 4 Securethe MAC 5000 tothe trolley by tightening the three captive screws located under the trolley tray MAC 5000 5 Replace the end panel by pushing up and in until you hear a snap 6 Unlock the wheels to allow free move
64. edicated circuit recommended If the measurements are significantly out of range have a qualified electrician repair the outlet The voltage measurements should be as follows 1 120VAC 10 VAC between the line contact and neutral and between the line contact and ground 2 Lessthan 3 VAC between neutral and ground NEUTRAL GROUND MD1128 011A 240 VAC 50 60 Hz Use a digital voltmeter set to measure at least 300 VAC to check the voltages of the NEMA 6 20R AC wall outlet dedicated circuit recommended If the measurements are significantly out of range have a qualified electrician repair the outlet The voltage measurements should be as follows 1 120 VAC 10 VAC between either hot contact and ground 2 210 to 230 VAC between the two hot contacts GROUND MD1128 012A Revision C MAC 5000 resting ECG analysis system 4 19 2017803 003 Maintenance Domestic Electrical Safety Tests Leakage Tests The leakage tests are safety tests to ensure that the equipment poses no electrical health hazards Use the table below to determine which tests apply to the unit under test and the maximum allowable leakage currents For international leakage limits refer tothe internal standards agencies of that particular country If the unit under test fails the leakage tests do not allow the customer to use the equipment Call Tech Support for assistance See the H ow to Reach Us page in the front of th
65. eed a heatsink The method chosen here was to use a FET Q5 as a switch a switch is either on or off and in both cases dissipates little power In normal operation the ENIOPWAR signal is driven high by software to activate the power switch This signal saturates transistor Q3 which provides the gate drive for the dual FET Q5 Both P channel FETs of Q5 areused and therefore are connected in parallel Return current from the load is sensed by shunt resistor R31 0 10 One stage of the quad opamp U4 is used as a differential amplifier to boost this current sensed signal Another stage of U4 is used as an integrator which integrates the amplifier current limit signal before entering comparator U5 When the current exceeds the comparator threshold the open drain output of the comparator is used to remove the gate drive from Q3 which will in turn switch off the com port power The function of the integrator is two fold First it allows high surge currents to exist for a short time for starting the KISS pump Secondly the integrator has a much longer recovery time due to diode CR6 which effectively changes the integration resistor from 100K Q to 1Meg Q This long recovery time results in a low duty cycle when the load is a short circuit The low duty cycle prevents FET Q5 from overheating when driving a short circuit 2 22 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation Thermal Printhead Po
66. er draw declines all excess power supply capacity is once again delivered to the battery Battery Temperature Sensor Moe uses a thermal sensor insidethe battery pack to determine when to terminate charge During normal charge the electrical energy obtained from the power supply is stored in chemical reactions in the battery When the battery reaches full charge there are no more reactants available in which to store chemical energy and the supplied charge power is converted directly to heat The sudden risein pack temperature caused by this release of heat is an indicator of 2 28 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation full charge When the rate of pack temperature rise exceeds a certain threshold charge is terminated This is the only normal charge termination mechanism Abnormal conditions such as battery or ambient temperatures beyond spec or excessive pack voltage may also terminate charge Once fully charged the battery is maintained by low duty cycle charge current pulses Absurdly low voltage readings from the battery temperature sensor indicate an open thermistor This is used as an indication that no battery pack is present The sole purpose for resistor R18 is to protect Moe s ADC AN3 pin in the case where the temperature signal TBATTERY becomes inadvertently tied toVBATT Thiscan easily occur since the two pins are adjacent Should the short occur re
67. es the low side of the thermistor bias networks Charge Light Moe provides power tothe amber charge light in the power supply compartment Moe communicates the current battery charger state via this light Four conditions may be indicated Battery charged light is off Battery needs charge light blinks twice per second Battery is critically low light blinks once per second Battery is charging light on continuously Revision C MAC 5000 resting ECG analysis system 2 29 2017803 003 Equipment Overview Theory of Operation Note that f the battery is completely discharged so that the MAX783 VL output 5V falls out of regulation the charge light will remain off The charge LED is contained in the power supply compartment and is disconnected from the CPU board when the cover is open When the cover is closed electrical connections are re established through the self aligning connector As the connections are made in random order there is a possibility that the VPS and XChargeLED drive lines can connect before the power supply ground This places a high potential across the LED drive circuit as the power supply attempts to return its output current through the LED To prevent damage tothe LED and driver itis implemented as a constant current source with a large compliance voltage Q7 provides the constant current drive and derives LED operating power from the MAX782 U26 VL output rather than from 3V C Q
68. es dormant until the next system start up Board ID Register It is necessary to identify versions revisions of the CPU board automatically in the field Curly provides a mechanism for identifying variations of CPU boards that require different start up code Depending on the board code read by Curly any of up to eight different FPGA images and start up code sets may be loaded The board I D register contains a hardwired three bit code that tracks the FPGA image number indicating to the StrongARM just which FPGA image has been loaded Three additional FPGA inputs are reflected in this register to allow 2 14 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation further refinement of the board identity Resistors R162 and R178 through R182 are used to program the board ID Board ID Code Versions of the 801212 CPU Board assembly 000h 001 002 and 003 001h 004 not used and 005 this board XBus Controller Toreduce loading on the high speed processor address and data busses a slow speed byte bus is provided for peripheral interface The Super I O controller and SmartM edia card are both located on this bus Unlike the 3 3V only main data address busses XB us is compatible with both 5V and 3 3V logic To maintain software compatibility with previous board versions the low order address byte is not used by XBus Starting XBus addressing with A8 also produces Super I O addresse
69. es of the main PCB Lift the main PCB from the unit Reassemble the main PCB top cover and display keyboard assemblies by reversing the steps for removal Install the battery and paper then power on the unit and verify that the serial number and printhead resistance label on printhead is correct setup parameters meet user s requirements Removal Remove the top cover following the procedure above 2 Usinga Phillips head screw driver remove the two screws that hold the printhead to the printhead mounting plate 3 Open the writer assembly disconnect and remove the printhead Reassembly 1 Record the resistance value of the new printhead Connect the new printhead to the ribbon cable Hold the new printhead FIRMLY in place against the two metal tabs on the printhead mounting plate then tighten the two screws Replace the top cover and power up the unit Go to the Setup menu and enter the new printhead resistance value Run a Writer Test test See Chapter 5 4 14 MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Disassembly Guidelines Diskette Drive Removal Replacement 1 Remove the top cover and display keyboard assembly following the procedures above Remove the cable from the diskette drive to the main PCB 3 Remove two flat head screws holding the diskette drive to its mounting brackets Loosen but do not remove two TORX mounting screws holding the mounting brackets in place
70. evision C MAC 5000 resting ECG analysis system B 7 2017803 003 Appendix B Technical Specifications Technical Specifications For your notes B 8 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix C Electromagnetic Compatibility evision MAC 5000 resting ECG analysis system 2017803 003 For your notes C 2 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix C Electromagnetic Compatibility Electromagnetic Compatibility EMC Electromagnetic Compatibility EMC Changes or modification to this system not expressly approved by GE Medical System could cause EMC issues with this or other equipment This system is designed and tested to comply with applicable regulation regarding EMC and needs to be installed and put into service according to the EMC information stated as follows WARNING Use of portable phones or other radio frequency RF emitting equipment near the system may cause unexpected or adverse operation WARNING The equipment or system should not be used adjacent to or stacked with other equipment If adjacent or stacked use is necessary the equipment or system should be tested to verify normal operation in the configuration in which it is being used Guidance and Manufacturer s Declaration Electromagnetic Emissions The MAC 5000 is intended for usein the electromagnetic environment specified below It is the responsibil
71. ficient Regulator Q current appears to be about 3x the load current This makes conservation of load on 3V C crucial 3V M Most of the MAC 5000 hardware runs from 3V M The MAX782 provides this rail from the battery via a PWM synchronous switching regulator Moe controls 3V M in tandem with 5V M 3V EMI Electromagnetic Interference This is simply an RF blocked feed from 3V M 3V M load is contained within the CPU board Power for devices for external functions is supplied by 3V EMI Theisolation of 3V EMI from 3V M may be unnecessary as the concept has never been tested for its effect 5V M The MAC 5000 is not fully in the 3V age The Super I O floppy diskette drive and thermal printhead all require 5V power The MAX782 provides this rail via another PWM synchronous switching regulator Moe controls 5V M in tandem with 43V M 5V EMI Similar to 43V EMI this rail is an RF blocked feed from 5V M used to power devices for external functions The isolation of 5V EMI from 5V M may be unnecessary as the concept has never been tested for its effect 18V The Main Regulator s 5V switching output also supports generation of a non regulated 18V rail which is used to provide power for the acquisition module By providing the acquisition module with 11 5V linearly Revision C MAC 5000 resting ECG analysis system 2 11 2017803 003 Equipment Overview Theory of Operation regulated power from the 18V rail of t
72. fier injects an offset current derived from REF 2V5 to achieve bipolar operation TheDC outputs operate in unipolar fashion eliminating the vexing MAX 1 offset Revision C MAC 5000 resting ECG analysis system 2 19 2017803 003 Equipment Overview Theory of Operation SDRAM SmartMedia Card Serial EEPROM problems No zero calibration is required for the DC outputs Since the ECG output is an AC signal no offset adjust is required there either The output amplifiers provide additional low pass filtering R71 C89 etc ESD Electrostatic Discharge protection and additional PWM carrier filtering is provided by 0 1uF filter capacitors To prevent amplifier oscillation blocking resistors are placed between the amplifier outputs and the filter capacitors Beep Generator A simple tone generator with two volume levels provides system beeps and key dicks Frequencies of 250 Hz 500 Hz and 1 kHz are provided at both low and high volume The logic level output signal drives LS1 through an open collector transistor driver Q1 Full volumeis achieved by driving the fundamental beep tone directly to the speaker Half volume is achieved by gating the speaker signal with a 24 MHz square wave reducing the amplitude by 50 Program code and working data is stored in a single 4M Word bank of 32 bit wide memory 16M Bytes This memory is made up of 2 64M bit SDRAMs each 16 bits wide Although the present design uses 64M bit devices 128M
73. he following keys at the same time C3 8 0 NOTE 153A 154A 209A For information about troubleshooting the M obileLink Standard Security option see MobileL ink Installation amp Troubleshooting Guide PN 2002783 060 For information about troubleshooting the M obileLink Ultra High Security option see MobileLink UHS Installation amp Troubleshooting Guide PN 2020300 051 5 16 MAC 5000 resting ECG analysis system 2017803 003 Revision C Troubleshooting Frequently Asked Questions Frequently Asked Questions Maintenance NOTE See Operator s Manual for complete Systen Setup information Save Setups Q How dol save changes have made to the System Setups A Check the following Return to Menu by pressing the esc key or selecting More from the menu until you see Systen Setup Select System Setup Select Save Setup Select To System You can select Main Menu to exit Systen Setup 999 Storing ECGs Q Why won t any of the ECGs perform save to the floppy diskette A Check the following Check that the diskette is fully inserted into the drive Make sure you are using high density H D 3 5 diskettes Verify that the diskette is not write protected Try a new diskette f your system is not set up to automatically save records you must manually save by pressing Store 999 Format a Disk Q How dol format a diskette in the MAC 5000 A When you inse
74. he main regulator rather than the main 12V regulator U 13 acquisition is not affected by excessive current draw from the printer motor or external loads on the COM ports esp KISS pump The acquisition module s power requirements are modest so efficiency is not a pressing concern and the lower efficiency of this approach is acceptable VCore The StrongARM CPU operates its internal core logic at 1 8V while its 1 O ring runs at the system standard 3 3V The Core Regulator a low dropout linear regulator drops 3V M to 1 8V for use by the StrongARM 2 5V The FPGA Xilinx Spartan 2 operates its internal core logic at 2 5V while its I O ring runs at the system standard 3 3V The 2 5V Regulator alow dropout linear regulator drops 3V M to 2 5V for use by the FPGA 12V The paper motor drive circuit LCD backlight and external COM ports all require 12V The Main Regulator s 18V output cannot provide sufficient current for all of the systems 12V loads so a secondary 12V regulator is required The Main 12V Regulator U13 a switching buck regulator provides the higher currents needed by these loads A P channel MOSFET Q4 switch precedes the regulator to provide on off control Gate capacitor C54 slows the turn on off time of the MOSFET switch to eliminate switching transients The voltage divider created by R33 34 prevents the full supply rail from being impressed across Q4 s gate when on This protection is necessary as the maximu
75. hree of the outputs are available on the Analog I O connector the fourth is available internally for future use if any One of the PWM channels provides 12 bit resolution at 6 kHz cyde rate the other three provide 8 bit resolution at 96 kHz cycle rate The StrongARM simply writes the desired value into a PWM data register and the output duty cycle changes on the next PWM cycle External analog circuitry converts the PWM logic signals to smooth analog voltages The 12 bit PWM channel is intended for ECG output and produces a swing of 10 to 10V The two 8 bit channels provide a unipolar 10V output Regardless of the resolution or swing range of each PWM channel the FPGA treats the data value as a signed 16 bit number representing a voltage from 10V Ox7fff to 10V 0x8000 Logic in each PWM channel ensures that the closest possible voltage is generated for each data value ex 0x8000 on an 8 bit channel produces zero volts output The FPGA PWM output signals contain a substantial amount of noise from 43V M supply fluctuations To reduce noise and establish an accurate reference level the PWM signals are buffered by CMOS inverters U 16 that are powered from REF 2V5 Although the CMOS inverters are powered by 2 5 Volts but are driven by 3 3 Volt logic no problem exists as this is allowed with VHC logic The PWM output signals are then low pass filtered R79 C104 etc before being passed to the output amplifiers The ECG output channel ampli
76. ially available compressed air to blow away the accumulated dust Follow the manufacturers directions 4 4 MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Inspection and Cleaning Thermal Printhead Clean the thermal printhead every three months or more often with heavy use A build up of thermal paper coating on the printhead can cause light or uneven printing Use a solution containing alcohol on a nonwoven nonabrasive cloth such as Techni Cloth to wipe off the printhead Do not use paper toweling as it can scratch the printhead Thermal Printhead MD1322 4A Revision C MAC 5000 resting ECG analysis system 4 5 2017803 003 Maintenance Battery and Patient Cable Replacement Battery and Patient Cable Replacement Battery Replacement 1 Press the internal access button to open the unit 2 Slidethe battery release button in the direction of the arrow and lift the battery out MD1325 112B 3 Install a new battery and close the unit Patient Cable Replacement Press the internal access button to open the unit Press the connector release tabs and pull the connector loose 3 Pull the cable from the retaining tabs MD 1322 006 4 Reassemble the cable by reversing the above steps 4 6 MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Disassembly Guidelines Disassembly Guidelines Preliminary Steps Prior to disassembly perform
77. ic Card Reader Kit NA Revision C MAC 5000 resting ECG analysis system 2017803 003 C 7 Appendix C Electromagnetic Compatibility Electromagnetic Compatibility EMC Part No Description Maximum Lengths 2014403 XXX MAC 5000 Wireless Kit NA 2023922 XXX MAC 5000 Secure Wireless Kit NA MAC 5000 resting ECG analysis system Revision C 2017803 003 Index Revision C MAC 5000 resting ECG analysis system Index 1 2017803 003 Index 2 MAC 5000 resting ECG analysis system Revision C 2017803 003 Index A abbreviations A 3 ACI TIPI report missing 5 15 acquisition module interface 2 17 acquisition module test 5 13 analog input test 5 14 analog output test 5 13 B back panel connectors 2 4 battery capacity 5 18 battery disposal B 6 BBus interface 2 19 board ID register 2 14 C CAM acquisition module 2 21 CCFL Counter Current Flow Limit 2 21 cleaning thermal printhead 4 5 visual inspection 4 4 clock calendar 2 23 CLUT Color Lookup Table 2 16 COM port loopback test 5 13 connectors back panel 2 4 D DCOut loopback test 5 14 DE Display Enable 2 16 diskette format failure 5 14 E ECG data noise 5 15 ECGOut QRStrigger loopback test 5 14 electromagnetic compatibility C 1 EMI Electromagnetic Interference 2 11 equipment storage conditions B 6 ESD Electrostatic Discharge 2 20 F field replaceable units 6 4 FIQ Fast Interrupt Request 2 16 format a Disk
78. icate a flat spot on the roller A white line across the length of the page indicates a missing print head dot Dark lines across the width of the page indicate gear tolerance problems Lines too close together at the start of the test indicate an incorrect start up speed Test Pattern Il A combination of Test Pattern and Roller tests The first three pages consist of a series of triangular waveforms and various hashmarks The fourth page is a partial roller test Test Pattern Il Continuous Test Pattern runs continuously until stop is pressed Continuously Run Out Paper This test is used in manufacturing to test how well the unit self corrects tracking problems Revision C MAC 5000 resting ECG analysis system 5 11 2017803 003 Troubleshooting Diagnostic Tests Battery Tests NOTE Battery Status Verify that a functional floppy disk is inserted in the unit before proceeding with the battery tests Test results can only be saved on a floppy disk and printed once the tests are complete Failure to insert a floppy disk will result in loss of test results Displays and constantly updates the following information Battery Discharge Test Percent of charge remaining Battery voltage Battery current Battery temperature Maximum and minimum battery temperature Ambient temperature Maximum and minimum ambient temperature Current battery charging status This test charges the battery to full capaci
79. icc Dace epeenbert Dien A choked cls 4 8 TOC oce o epe p RE ERE OCHO ees 4 9 Display Keyboard Assembly 0 0 cece cette eee eens 4 11 MAC 5000 resting ECG analysis system Revision C 2017803 003 Remo mida arab aida tua fo 4 11 Display Keyboard Reassembly isses 4 12 RN 4 13 Maitt e B REC A EE ae ee 4 13 Removal sata ne purita alar RE rara eds 4 13 ROSS EM Se E qum eR 4 14 Printhead Replacement 0 ccc ccc cece ee eee nn 4 14 Removal icc A eed era Ee c s 4 14 Reassembly aedes eee ences Pepe Per epe dea rs 4 14 Diskette Drive Removal Replacement sssssssssse n 4 15 Writer Roller Carriage Assembly isses 4 15 Removal us asado vot ee a EOS 4 15 Reassembly 2 dde teet de Cute dete ncm e 4 16 Trolley Casters Jes a eet cec pa leet e th do i oae 4 17 Domestic Electrical Safety Tests 0ccccee eee e eee eee eee eae 4 19 AC Line Voltage Test cere R ia e taie Ai 4 19 Leakage Tesi ian ts sete t a a oe cdit e 4 20 Leakage Test Diagrams isssssssssssseee mmn 4 21 Gro nd CON iren tt vaca a ERR EN ERE 4 23 5 Troubleshooting cceeceeeeee eee e eee ennees 5 1 Assembly Descriptions 0 ccceee eee eee eee Hh 5 3 INTOJUCION a o teed sop ba a 5 3 Assembly Block Diagram aiin cect eet eee 5 3 General Fault Isolation 0 cece eee e eee eas 5 4 Power up Self test ariin inte eeen aa o eA eaa mene 5 4 Power up Flow Chart isses 5 5 Poor Quality EC 5 2 dente sts iet rod o a
80. ion Requirements None MAC5000 Configuration Requirements Use the Edit Protocol application to set the protocol Test Type to Analog Treadmill in MPH or Analog Treadmill in Km H for protocols that will be used with this treadmill Configure pin 2 on the ANA TTL port by selecting the following System Setup ExerciseTest 3 16 MAC 5000 resting ECG analysis system Revision C 2017803 003 Installation MAC 5000 ST Requirements and Configuration Bicycle Ergometers Inputs Outputs and set Slow Analog Output to Workload Configure pin 8 on the ANA TTL port by selecting the following System Setup ExerciseTest Inputs Outputs and set Fast Analog Output to Workload Ergoline 800 900 Lode Ergometer Connection Requirements Use cable PN 2008109 001 Ergoline 800 PN 2008114 001 Ergoline 900 or PN 2007981 001 Lode Ergometer to connect from the MAC5000 ANA TTL port to the ergometer analog control port NOTE For any other ergometer the customer is responsible for making the appropriate cable Device Configuration Requirements Refer to ergometer Operator s Manual MAC5000 Configuration Requirements Use the Edit Protocol application to set the protocol Test Type to Ergometer in Watts or Ergometer in KPM for protocols that will be used with this Ergometer Configure pin 2 on the ANA TTL port by selecting the following System Setup ExerciseTest I
81. ion Test Grey Scale Test Patterns Usethe arrow pad control to highlight a menu item then press the Enter key to select t The tests and test menus contain on line prompts and or instructions Display Tests Speaker Test Keyboard Test PS2 Port Test Writer Tests Battery Tests Communication Tests Acq Module Tests Analog O Tests Floppy Drive Tests Exit System Diagnostics reboots the system 9 999999999 Run the screen Display Tests to verify that all the screen pixels are working and that the brightness and contrast samples appear to be within normal range There are no screen display adjustments The screen Display Tests are as follows Use the arrow pad control to move the bar across the screen and look for any missing pixels on the display Press the F1 key toturn on all of the pixels simultaneously Press the Enter key to exit the test The first test pattern used in manufacturing to verify the screen intensity shows two squares one bright and one dim Press any key to activate the next display 5 8 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting Diagnostic Tests The second test pattern shows 32 color levels Check for problems with the overall pattern If the system does not have the color option various grey scale patterns display Press the Enter key to exit the test Speaker Test Use the arrow pad to select Loud or Soft Press the Enter key to produce a
82. ircuit until the next system start up In this version of the CPU board the ID codes are X2 and B2 Shemp Similar in function to the ABus keyboard controller in MAX 1 architecture machines Shemp scans the keyboard and queues key presses for the StrongARM Unlike previous designs key presses are reported both on press and release allowing system software to implement auto repeat as well as the continuous operation of treadmill control keys up down faster slower A special key code indicates when all keys are up as a Safeguard against stuck keys in the application software Unlike previous keyboard encoder designs Shemp does not provide dedicated scan hardware for the shift and or option keys These keys are now located in the scan matrix Careful placement of keys in the scan matrix allows simultaneous depression of the shift option and other keys without interference Larry Larry controls the paper drive motor and digitizes the analog inputs The motor control functions are virtually identical to those offered by the 78310 processor in MAX 1 architecture machines with an expanded speed control range down to zero Since Larry s code is not field alterable every motor control parameter is alterable via BBus Hopefully this renders the code immune to minor changes in the printer drive train Revision C MAC 5000 resting ECG analysis system 2 25 2017803 003 Equipment Overview Theory of Operation Motor Speed Contr
83. ity of the customer or user to ensure that the MAC 5000 is used in such an environment Emissions Test Compliance Electromagnetic Environment Guidance The equipment uses RF energy only for its RF emissions Groupi internal function Therefore its RF emissions CISPR11 P are very low and are not likely to cause any interference in nearby electronic equipment RF emissions Class A CISPR11 The equipment is suitable for use in all E establishments including domestic Harmonic Emissions Class A establishments and those directly connected to EN 61000 3 2 the public low voltage power supply network Voltage fluctuations that supplies buildings used for domestic Flicker emissions Complies purposes EN 61000 3 3 Revision C MAC 5000 resting ECG analysis system C 3 2017803 003 Appendix C Electromagnetic Compatibility Electromagnetic Compatibility EMC Guidance and Manufacturer s Declaration Electromagnetic Immunity The MAC 5000 is intended for use in the electromagnetic environment specified below It is the responsibility of the customer or user to ensure that the MAC 5000 is used in such an environment Immunity Test EN 60601 Test Level Compliance Level dis oi Guidance Electrostatic discharge ESD EN 61000 4 2 6 kV contact 8 kV air 6 kV contact 8 kV air Floors should be wood concrete or ceramic tile If floors are covered with synthetic material the relative humidity
84. le NOTE 1 At 80 MHz and 800 MHz the higher frequency range applies NOTE 2 These guidelines may not apply in all situations Electromagnetic propagation is affected by reflection from structures objects a Field strengths from fixed transmitters such as base stations for radio cellular cordless telephones and land mobile radio AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy To assess the electromagnetic environment due to fixed RF transmitters an electromagnetic site survey should be considered If the measured field strength in the location in which the equipmentis used exceeds the applicable RF compliance level above the equipment should be observed to verify normal operation If abnormal performance is observed additional measures may be necessary such as re orienting or relocating the equipment Over the frequency range 150 KHz to 80 MHz field strengths should be less than 3 V m Revision C MAC 5000 resting ECG analysis system C 5 2017803 003 Appendix C Electromagnetic Compatibility Electromagnetic Compatibility EMC Recommended Separation Distances The table below provides the recommended separation distances in meters between portable and mobile RF communication equipment and the MAC 5000 TheMAC 5000 is intended for usein the electromagnetic environment on which radiated RF disturbances are controlled The customer or the user of the MAC 5000 can help
85. lies Item Part Number 10 TORX driver Leakage current tester MT 1216 02AAMI for 220V MT 1216 01AAMI for 110V Multifunction micro simulator MARQ 1 Precision dust remover Lint free soft cloth TX609 PS2 style keyboard J apan only Revision C MAC 5000 resting ECG analysis system 2017803 003 4 3 Maintenance Inspection and Cleaning Inspection and Cleaning Visual Inspection Perform a visual inspection of all equipment and peripheral devices daily Turn off the unit and remove power before making an inspection or cleaning the unit Check the case and display screen for cracks or other damage Regularly inspect all cords and cables for fraying or other damage Verify that all cords and connectors are securely seated Inspect keys and controls for proper operation Toggle keys should not stick in one position Knobs should rotate fully in both directions Exterior Cleaning Clean the exterior surfaces monthly or more frequently if needed 1 Usea clean soft cloth and a mild dish washing detergent diluted in water 2 Wring the excess water from the cloth Do not drip water or any liquid on the equipment and avoid contact with open vents plugs or connectors 3 Dry thesurfaces with a clean cloth or paper towel Interior Cleaning General Check for dust buildup on the surfaces of the interior circuit boards components and power supply Use commerc
86. lines Trolley Casters Removal 1 Remove the MAC 5000 and all loose items from the trolley and then place the trolley on its side 2 Locate the slot under the arrow on the bearing dust cap and using a small blade screwdriver pry the cap from the caster to be removed 3 Usingan Allen wrench remove the wheel shaft and wheel from the caster 4 Usingan Allen wrench remove the bolt holding the caster to the trolley Revision C MAC 5000 resting ECG analysis system 4 17 2017803 003 Maintenance Disassembly Guidelines Reassembly 1 Install the replacement caster on the trolley NOTE Ensure that the pins align with the holes on the fixed caster before fastening to the trolley 2 Install the wheel and attach with the wheel bearing shaft and nut y 3 Usinga small mallet tap the bearing dust covers back in place 4 Set trolley upright and push to check alignment and free movement of casters 5 Replace MAC 5000 4 18 MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Domestic Electrical Safety Tests Domestic Electrical Safety Tests AC Line Voltage Test This test verifies that the domestic wall outlet supplying power to the equipment is properly wired For international wiring tests refer to the internal standards agencies of that particular country 120 VAC 50 60 Hz Use a digital voltmeter to check the voltages of the 120 volt AC wall outlet d
87. loud or soft tone The tone level difference is minimal Highlight Return and press the Enter key to return to the System Diagnostics menu Keyboard Test Press each key and verify that the key is highlighted on the screen and also displayed at the top of the screen It is normal for a dim background image to remain on the screen when you select the next key The numeric value that displays at the top of the screen is the scan code representation of the pressed key NOTE The display shows keys in the upper part of the screen that are only available with the MAC 5000 ST keyboard m Check both of the Shift keys by pressing each in combination with a letter to display a capital letter m Press the center of arrow pad control and verify that the word IN displays on screen Press arrows to change the displayed arrow position A beep sounds with each arrow press m Press the Shift key and the F6 key to exit the test PS2 Port Test Use the following steps to complete the PS2 Port Test 1 Turn OFF the mains power switch on the MAC 5000 2 Connect a PS2 style keyboard to the PS2 port See Chapter 2 Connector Identification Turn ON the Mains power switch on the MAC 5000 Follow the Keyboard Diagnostic Test procedure Characters typed on the PS2 keyboard will be displayed on the MAC 5000 Keyboard Test screen if the PS2 port is working Revision C MAC 5000 resting ECG analysis system 5 9 2017803 003 Troubleshooting Di
88. ly low Each print line requires 1728 bits of data To conserve FPGA resources each line is divided into three chunks of 512 bits each with one leftover chunk of 192 bits The FPGA provides a single 16 word x 32 bit buffer 512 bits to hold the print line data After writing a chunk of data to the buffer the StrongARM enables serialization of the data by reading one of two registers to support the serialization of either a full 512 bit or partial 192 bit buffer When the entire print line has been loaded the StrongARM cues a print strobe by writing the required strobe width value to the strobe latch pulse generator When the strobe register contains a non zero value the power switch gate pump produces a differential clock signal to drive an external diode voltage doubler CR21 22 C171 173 R134 The output of the voltage doubler drives the gate of a power MOSFET Q9 that provides power to the print head R133 provides gate bleed off to ensure that Q9 turns off when the pump stops C186 filters the doubler output to DC A special test mode is provided to allow testing of the thermal print head In test mode print head power is disabled and the strobe signal is driven continuously This allows individual print dots to be driven with a small test current via a current source Q10 R173 Z2 enabled by a level 2 18 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation shifter Q1
89. m Vgs of the MOSFET is less than the peak supply voltage REF2V5 The high power rails are neither precise nor quiet enough to be used as the reference for analog input output or internal measurement circuits The Analog Reference Regulator U 35 a 2 5V shunt regulator provides a quiet and stable reference voltage for such purposes VREF is derived from 45V EMI rather than 3V EMI to minimizethe change in reference current with changes in input rail voltage The difference between 5V and 2 5V is three times greater than the difference between 3 3V and 2 5V If the absolute ripple on both supplies is the same the modulation of reference current will be 3 times less if power is derived from 45V VAna VAna The analog output circuitry is powered by a low current switched 12V rail provided by the Main Regulator VAna provides the positive supply for the output op amps A charge pump voltage inverter is provided to produce an approximate 11V rail for the op amps Although only the ECG output is bipolar all output amplifiers are driven from VAna A short circuit on either of the unipolar DC outputs could load VAna sufficiently to affect the negative peak swing of the ECG output The ECG and DC outputs are not required to operate correctly in the presence of abnormal loads 2 12 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Theory of Operation Clocks CPU FPGA Internal Logic Super I O
90. ment of the trolley Revision C MAC 5000 resting ECG analysis system 3 7 2017803 003 Installation P reparation for Use Installing the Modem Kit The modem and its mounting bracket comes assembled and ready to install on the trolley To install a modem kit on the trolley complete the following steps 1 Find the modem mounting site located under the Acquisition Module support arm at the rear of the trolley where the kit is to be installed 2 Slidethe assembly up in place sothat the bracket slot catches on the bracket lip 3 Tighten the three mounting screws to secure the modem to the trolley 3 8 MAC 5000 resting ECG analysis system Revision C 201 7803 003 Installation P reparation for Use 4 Plug the modem cable into connector port 2 on the MAC 5000 5 Refer tothe operator s manual for information on using the modem Revision C MAC 5000 resting ECG analysis system 3 9 2017803 003 Installation P reparation for Use Magnetic Card Reader Installation The Magnetic Card Reader and its mounting bracket are assembled and ready to install on the trolley Parts are included for two different trolley styles Disregard and do not use the parts indicated in the following illustration Do Not Use These Parts Card Reader Assembly To install the Magnetic Card Reader and its mounting bracket on the trolley complete the following steps 1 Remove both end panels b
91. nce gt 10 MQ E 10Hz defibrillator protected Patient Leakage Current 10 yA Pace Detection 750 uV O 50 us duration Orthogonal LA LL and V6 Special Acquisition Functions Disconnected lead detection electrode impedance AC noise baseline wander and muscle tremor Communication MAC and MUSE system compatible RS 232 Optional Modem FAX and wireless transmission remote retrieval remote query Revision C MAC 5000 resting ECG analysis system B 3 2017803 003 Appendix B Technical Specifications Technical Specifications Writer Item Description Type Thermal dot array Speeds 5 12 5 25 50 mm s same as display Number of Traces 3 6 12 or 15 user selectable same as display Sensitivity G ain 2 5 5 10 20 10 5 split calibration mm mV same as display Speed Accuracy 2 Amplitude Accuracy 5 Resolution Horizontal 1000 dpi 25 mm s 200 dpi vertical Paper Type Size Thermal z fold perforated 215 9 mm x 276 4 mm 8 5 in x 11 in fanfold 300 sheets per pack Keyboard Item Description Type Sealed elastomer with soft function keys alphanumeric keys writer controls and TrimP ad cursor controls Electrical Item Description Power Supply AC or battery operation AC Input Voltage 100 240 VAC 10 15 Current 0 5 A 115 VAC 0 3 A 240 VAC typical Frequency 50 60 Hz
92. ner Revision C MAC 5000 resting ECG analysis system 1 5 2017803 003 Introduction Safety Messages Failure on the part of the responsible individual hospital or institution using this equipment to implement a satisfactory maintenance schedule may cause undue equipment failure and possible health hazards Toensure patient safety use only parts and accessories manufactured or recommended by GE Medical Systems Information Technologies Contact GE Medical Systems Information Technologies for information before connecting any devices to this equipment that are not recommended in this manual If the installation of this equipment in the USA will use 240 V rather than 120 V the source must be a center tapped 240 V single phase circuit Parts and accessories used must meet the requirements of the applicable EC 60601 series safety standards and or the system configuration must meet the requirements of the EC 60601 1 1 medical electrical systems standard The use of ACCESSORY equipment not complying with the equivalent safety requirements of this equipment may lead to a reduced level of Safety of the resulting system Consideration relating to the choice shall include use ofthe accessory in the PATIENT VICINITY and evidence that the safety certification of the ACCESSORY has been performed in accordance to the appropriate EC 60601 1 and or EC 60601 1 1 harmonized national standard MAC 5000 resting
93. nly Any unauthorized attempt to repair equipment under warranty voids that warranty It is the user s responsibility to report the need for service to GE or toone of their authorized agents Equipment Identification The Serial Number tag is located inside the device where shown below SERIAL NUMBER Every GE Medical Systems I nformation Technologies device has a unique serial number for identification The serial number that appears on the device may be in one of two formats A or B as follows 1 8 MAC 5000 resting ECG analysis system Revision C 2017803 003 Introduction Service Information Format A JOA A XXXXXXXX XXXXXXX XXXXXXX XXX XXXXXXXXX XX XXXX XX XXXXX B TUERI HH ALTI HM EIU HERE DD J6XX0O415FXXxX C P G F E D MD1113 022C Table 2 Equipment Identification Format A Item Name Description A name of device MAC 5000 resting ECG analysis system B manufacturer GEMS T C serial number Unique identifier D device characteristics One or two letters that further describe the unit for example P prototype not conforming to marketing specification R refurbished equipment S special product documented under Specials part numbers U upgraded unit E division Division where device was manufactured F product sequence Manufacturing number of total units manufactured number G product code Two character product descriptor
94. nputs Outputs and Slow Analog Output to Workload or configure pin 8 by selecting System Setup ExerdseTest Inputs Outputs and FastAnalog Output to Workload Revision C MAC 5000 resting ECG analysis system 3 17 2017803 003 Installation MAC 5000 ST Requirements and Configuration For your notes 3 18 MAC 5000 resting ECG analysis system Revision C 2017803 003 4 Maintenance Revision C MAC 5000 resting ECG analysis system 2017803 003 4 1 For your notes 4 2 MAC 5000 resting ECG analysis system 2017803 003 Revision C Maintenance Introduction Introduction Recommended Maintenance Regular maintenance irrespective of usage is essential to ensure that the equipment will always be functional when required WARNING Failure on the part of all responsible individuals hospitals or institutions employing the use of this device to implement the recommended maintenance schedule may cause equipment failure and possible health hazards The manufacturer does not in any manner assume the responsibility for performing the recommended maintenance schedule unless an Equipment Maintenance Agreement exists The sole responsibility rests with the individuals hospitals or institutions utilizing the device Required Tools and Supplies In addition to a standard set of hand tools you will need the items listed below Table 1 Tools and Supp
95. ntegral encoder to an internally generated reference frequency derived from Larry s resonator Larry processes motor position information on both edges of both encoder signals for a total of 64 loop correction cycles per rotation of the motor shaft This high angular sampling rateallows Larry to achieve accurate and smooth speed regulation down to zero speed Paper J am Pull Detection Larry monitors the servo error variable to determine whether the servo loop is closed If the error variable saturates on for more than a predetermined time it is assumed that the paper drive torque has become excessive or the motor has stalled This condition is reported as a Paper J am Error Similarly if the servo error variable saturates at off for more than a predetermined time it is assumed that the someone is pulling on the paper with a force that exceeds the paper drive system torque and as a result paper speed has been pulled out of regulation This condition is reported as a Paper Pull Error Cue Hole Sensor Cue and out of paper conditions are sensed via the thermal print head s integral optical cue sensor Larry monitors the cue sensor s logic output Cue Hole Detection Larry monitors the output of the cue sensor to detect the presence or absence of paper under the sensor and hence the absence or presence of cue holes Paper Tracking Fault Detection Larry monitors the cue sensor for abnormally long paper travel without encountering a
96. o test them in production These are nominal specs and are only guaranteed for a new battery pack of 3 5A capacity As the following specs are for a system that is turned off they are deliverable by the CPU regardless of other system components Nominal charge time 5 Hours Max off time from gauge full till loss of clock 1 Month Max off time from gauge just empty till loss of clock 3 Days Max off time from panic shutdown till loss of clock 1 Day Maximum time from removal of live battery to loss of clock 6 Hours 2 30 MAC 5000 resting ECG analysis system Revision C 2017803 003 3 Installation Revision C MAC 5000 resting ECG analysis system 2017803 003 3 1 For your notes 3 2 MAC 5000 resting ECG analysis system Revision C 2017803 003 Installation P reparation for Use Preparation for Use General Shown below is a completely assembled optional MAC 5000 Trolley Use this picture for reference when installing trolley options Acquisition Module MAC 5000 Arm and Holder Front Cover Trolley Serial Number Swivel Locking Casters Casters NOTE Because the optional Trolley is made by another vendor for GE Medical Systems Information Technologies the serial number format is different from that shown in Chapter 1 Revision C MAC 5000 resting ECG analysis system 3 3 2017803 003 Installation P reparation for Use Trolley Height Adjustment The optional MAC 5000 Trolley can be assembl
97. odule Interface Thermal Printhead Interface Serial EEPROM Interface BBus Controller Four PWM Analog Outputs Beep Generator m APC Super I O controller containing A Floppy Disc Drive Controller Two Serial Ports one dual mode RS 232 IrDA Clock Calendar Y2K compliant PS 2 Keyboard Port for card and barcode readers m Four Peripheral Microcontrollers The F our Stooges Bootstrap Control Curly System Supervisor Battery Charger Gauge Moe Printer Motor Controller Analog nput Larry Keyboard Interface Shemp 2 6 MAC 5000 resting ECG analysis system 2017803 003 Revision C Equipment Overview Detailed Description For your notes Revision C MAC 5000 resting ECG analysis system 2017803 003 2 7 Equipment Overview Detailed Description Block Diagram StroncARM Address Bus SA 1110 StrongARM CPU Sh1 SDRAM Controller Acq Module I F TPH I F EEPROM I F LCD Controller VLB Bus I F XBus Controller StroncARM Data Bus Curly 68HC705 Sh2 14 7 MD1322 011L 2 8 MAC 5000 resting ECG analysis system Revision C 2017803 003 Equipment Overview Detailed Description Controllers To Super I O 68HC705 1 Larry t 7 Sh7 Drive 1 Shemp I Sh16 Keyboard Top Up 1 Power Suppy Enable On Off Key Moe System Reset System AC Power Supervisor Ambient Temperature y 3 Sh12 Change
98. ol Larry controls the motor speed by delivering a DAC controlled drive voltage to the motor windings The 6 bit DAC is implemented using discrete binary weighted resistors directly driven by Larry s port pins The DAC output voltage approx 300mv full scale is compared to a filtered fraction of the applied DC motor voltage by comparator U 29 f the motor feedback voltage is below the DAC voltage the comparator turns on the motor via an H Bridge driver One motor terminal which one is a function of motor direction is always grounded The other is alternately driven to either 12V or ground The duty cycle of the drive signal determines the average applied voltage and therefore the average motor speed The feedback voltage signal is the average of both motor terminals R125 and R148 driving R123 with a 50 1 ratio 15Vin 300mvV out hence 15V full scale Since one terminal is always zero grounded and the other is driven with a variable duty cyde between zero and 12V the feedback signal is positive regardless of motor direction C178 filters the switching noise from feedback voltage Note that the frequency and duty cycle of the motor drive signal are random This serves to reduce EMI by spreading any emitted noise across a wide frequency spectrum An RC snubber R161 and C198 suppresses ringing on the motor lines Larry maintains precise motor speed control by comparing the frequency of the tachometer pulse train emitted by the motor s i
99. ons Bd board baud BDGH binding head BetaB beta blockers BKSP backspace BLK black BLU blue Blvd boulevard BP blood pressure BPM beats per minute BRIT Britain BRN brown BSI British Standards Institute Btu British thermal unit C CalcBlk calcium blockers CAPOC Computer Assisted Practice of Cardiology CASE Computer Aided System for Exercise Catoprl Catopril Cauc Caucasian Cer ceramic CFM cubic feet minute CGR computer graphic record Ch CH channel C L center line CLK clock signal Clonid Clonidine cm centimeter cm square centimeters Cmd command number CMMR common mode rejection ratio CMOS complementary metal oxide semiconductor c o in care of COMI communications port 1 COM2 communications port 2 ComLink communications link Comp composition Confrmd confirmed Cont CONT Continental continued Coumadn Coumadin CPR cardiopulmonary resuscitation CPU central processing unit CR diode CRC cyclic redundancy check CRD cord crt CRT cathode ray tube CSA Canadian Standards Association CTRL control D D A digital to analog DA damping relay dac DAC digital to analog converter DAN Danish Dat Tim date time A 4 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix A Abbreviations Standard Abbreviations dBm dc DC DD DDD DEC Del DEMO DES Devld Diag Digital Digitox Digox Digoxin DIP Dirctry Diurt DOB DOS DP DPST DRAM DR DT DSKTP Dysopyr E ecg Ecg ECG ECO EDIC EEPROM e g
100. ounter Current Flow Limit backlight inverter as well as two digital controls for On Off and brightness While the F PGA is capable of directly driving the LCD external hardware is required to generate the analog video levels expected by external VGA monitors LCD Panel EMI Reduction Components Toreduce EMI 47pF capacitors have been added to all LCD digital lines In addition 49 9 Q resistors have been added to the video clock and Sync lines CRT Video DAC Sync Buffers A triple 6 bit video DAC supports external analog VGA monitors Only one DAC L evel Shifter Buffer will be described as they are all identical in function The video output is referenced to a filtered tap F B25 C219 off the 3V M supply rail and then level shifted back to ground Each DAC is comprised of six binary weighted resistors and a seventh blank sync signal resistor The FPGA LCD data outputs sink current through the 75Q load resistor in proportion to their respective DAC resistors The voltage across the 75 Q load resistor represents the sum of all drive currents Minor non linearity is introduced in the DAC transfer function by the fact that the summing junction varies in voltage with DAC current The 3 3V referred videois shifted back to ground by a blocking capacitor The shifted video signal is buffered and further shifted by emitter followers Transistors damp the negative excursions of the bases of the emitter followers to one diode drop above ground
101. owing the instructions in Substitute Master Password later in this section 5 When the System Setup menu displays hold down Shift and press F5 Shift E5 Type prod at the service password prompt The System Diagnostics menu appears Substitute Master Password If you do not have access to the system s password you can create a master password as follows 1 Atthe prompt for the system password enter meimac A random 6 digit number displays on the screen For example 876743 2 Writethe number down and create a new 6 digit number by adding alternating digits from the random number as follows Add first and third digits second and fourth digits third and fifth digits fourth and sixth digits fifth and first digits and sixth and second digits Disregard the 10s column when adding the digits The new number from the example above would be 440020 9999 3 Enter the new number then press the Enter key The System Setup menu displays This process only works once so you should reprogram the password permanently Revision C MAC 5000 resting ECG analysis system 5 7 2017803 003 Troubleshooting Diagnostic Tests 4 Gotothe Basic System menu Select Miscellaneous Setup Select the System password line and type the new password in the space Press the Enter key Select Save Setup from the System Setup menu Select To system System Diagnostics Main Menu Display Tests Pixel Verificat
102. possibility of satisfying the idle period requirement in the middle of a data packet Because the acquisition module clock is supplied by the FPGA receive timing errors are limited to phase uncertainty By searching for the beginning of the start bit in a fashion similar to that used by a UART the phase uncertainty is eliminated and the remainder of the packet may be received without further synchronization In practice the FPGA uses every edge in the receive data stream to re sync its bit sampling circuit It is possible for the ECG data to be all zeros or ones so runs of as many as 80 zeros or ones could occur before a marker word is encountered in the data stream which contains at least one 1 and one 0 to break any runs in the data The acquisition module supports a special code update mode for rapid reprogramming of its on board code memory To increase the update speed the acquisition module echoes each uploaded code byte with a single reply word rather than the usual 16 word data packet The FPGA receive logic provides a special one word reception mode to accommodate this Thermal Printhead Interface The StrongARM sends print data to the thermal print head through a buffered serial interface The FPGA implements the data buffer serializer strobe latch pulse generator and power switch gate drive pump Special interlocks are implemented to prevent stuck strobe signals or printing when the battery voltage is critical
103. pply Motor J11 Pin No Signal 1 Motor Encoder B 2 5V Power 3 Motor A 4 Motor Encoder A 5 Ground 6 Motor B 7 NC 8 28V Power 9 Ground 10 Battery Charge LED 11 28V Power 12 Ground 13 Door Open Detect 14 Ground 5 26 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting CPU PCB Input Output Signals Thermal Printer J12 Pin No Signal 1 Thermal Printer Power 2 Thermal Printer Power 3 Thermal Printer Power 4 Thermal Printer Power 5 Thermal Printer Power 6 Thermal Printer Power 7 Thermal Printer Power 8 Ground 9 Ground 10 Ground 11 Ground 12 Ground 13 Ground 14 Ground 15 Cue Sense 16 NC 17 5V Main Power 18 Ground 19 Data Strobe 20 Data Strobe 21 Data Strobe 22 Data Strobe 23 Data Load 24 Data Clock 25 Print Head Temperature 26 Pixel Data Revision C MAC 5000 resting ECG analysis system 2017803 003 Troubleshooting CPU PCB Input Output Signals Floppy Disk Drive J13 Pin No Signal 1 5V Power 2 Index 3 5V Power 4 Drive Select 0 5 5V Power 6 Disk Change 7 NC 8 Media Sense 0 9 Media Sense 1 10 Motor Select 0 11 NC 12 Direction 13 NC 14 Step 15 Ground 16 Write Data 17 Ground 18 Write Gate 19 Ground 20 Track 0 21 Ground 22 Write Protect 23 Ground 24 Read Data 25 Ground 26
104. pting to insert the cables into the connectors 5 Slide the display hinge metal rod to the right until it locks into the right hinge base 6 Replace the hinge bracket with the two TORX screws removed earlier Replace the screw and display ground at the left of the hinge rod Replacethe two TORX mounting screws on the right side of assembly Reassembly l Raisethedisplay tothe vertical position 2 Makesurethe bezel surrounding the rear panel connectors is in place Make surethe release mechanism for the Smartmedia card functions properly Lower the top cover down around the display and set in position Snap therear of thetop cover in place and then gently pulling on the thin plastic strip at the front of the top cover position it in place under the keyboard assembly Replace the screws removed in disassembly Assurethat the Nand Card is fully inserted into the card slot Main PCB Removal 1 Removethe top cover and display keyboard assemblies following the procedures above 2 Disconnect all remaining cable connections to the main PCB These include cables to the power supply printhead battery connect PCB diskette drive Revision C MAC 5000 resting ECG analysis system 4 13 2017803 003 Maintenance Disassembly Guidelines Reassembly Printhead Replacement With a Phillips screw driver remove the mounting screws holding the main PCB in place They are located around the outside edg
105. r Press the esc key until you return to System Setup Select Save Setup Select To System You can select Main Menu to exit Systen Setup 99 999 How dol change what questions see when am entering the patient data The patient questions you see on the Patient Data window when starting a test were set up in System Setup Goto System Setup Select Basic System Select Patient Questions Select the patient questions you want to include when entering the patient data for a test Press the esc key until you return to System Setup Select Save Setup Select To System You can select Main Menu to exit System Seup 99 999 5 18 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting Frequently Asked Questions Passwords Clinical Report Format Hi Res and Phi Res Editing PD Can you set up a password for the Dea ee function that is different than the Systen Setup password No The password for the System Setup and the Delete function are the same How dol change the way an ECG looks when it prints out Dothe following steps Goto System Setup Select ECG Select which type of ECG report you want to change Resting ECG Reports Pediatric ECG Reports 15 Lead Reports Select unconfirmed reports from the menu Find the report type you want the MAC 5000 to print Placethe number of copies you want in the appropriate column
106. r modulator to transmit both the clock and command bits from the serializer The reference clock duty cycle is nominally 50 By altering the duty cycle the DC content of the clock is changed The acquisition module detects this change in DC level The timing of these shifts in DC offset encode command data bits A zero is encoded as a single shift in duty cycle from 50 to 25 lasting 31 25us followed by a refractory period of 468 8us A one is encoded as a pair of 31 25us periods of 25 duty cycle separated by 93 75us followed by a 343 8us refractory period In either case the transmission of a single bit takes 500us A higher level protocol organizes commands as groups of 8 bits Data from the acquisition module is packed into 257 bit NRZ frames The receive line idle state is high The first bit of each packet is a zero and Revision C MAC 5000 resting ECG analysis system 2 17 2017803 003 Equipment Overview Theory of Operation serves as the packet start bit As with a UART the start bit is discarded The following 256 bits are received into a 16 word x 16 bit buffer for use by the StrongARM The receive logic then looks for an idle period analogous toa UART stop bit of at least 125us in length as an indicator that the link is again idle Special marker words are inserted into the ECG data packet words 5 10 and 15 to guarantee there will never bea run of more than 80 bits of one s or zeros for that matter so there is no
107. removal Before replacing the screws ensure that the ground wire is routed through the notch in the plastic and not pinched Removal NOTE It is not necessary to remove the Power Supply prior to removing the top cover 1 Turn the unit over so the bottom side is up and remove the TORX screw through the hole on the right rear corner of the unit This screw is only visible and accessible with the battery removed Qf IF D Le TORX Screw MD1322 002 2 Turn theunit right side up and press the internal access button and raisethe top of theunit Revision C MAC 5000 resting ECG analysis system 4 9 2017803 003 Maintenance Disassembly Guidelines 3 Remove three TORX screws Three TORX Screws MD1322 004A 4 Lower the top of the unit and lock in place Raise the display to the vertical position Gently lift the rear of the top cover free from the unit NOTE The top cover holds the bezel that surrounds the rear panel connectors so the bezel may fall free at this time 7 Atthe front of the top cover gently pull the thin strip of plastic free from under the keyboard The entire top assembly is now loose NOTE It may be helpful to rotate the top cover 45 degrees to provide a larger opening to clear the display 8 Carefully lift the top assembly up and clear of the raised display Reassembly 1 Raisethe display to the vertical position 2 Make
108. rify operation On power up the system automatically runs an internal self test If all circuits test good the start up screen displays If the equipment is not working properly ask yourself the following questions Is the unit turned on Have there been any changes in the use location or environment of the equipment that could cause the failure Has the equipment hardware or software been modified since last use Is operator error the cause of the problem Try to repeat the scenario exactly and compare that to the proper operation of the equipment described in the manual Is the battery installed When connected tothe AC wall outlet does the green AC power light glow Is the writer door closed Is the software card installed 5 4 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting General Fault Isolation Power up Flow Chart Press ON key Sh16 Micro Controller Reset MOE Sh12 pin 5 AC Present Sh12 pin 13 Battery OK Sh12 pin 17 No Yes MOE enables 3VM and 5VM No Stabilization period over Poor Quality ECGs MOE releases SysResest Sh12 pin 10 Micro Controller CURLY sh2 configures FPGA Sh5 CURLY reads SmartMedia card and moves boot code to FPGA boot RAM CURLY releases ARMRESET Sh2 pin 23 StrongARM executes boot code and configures SDRAM controller StrongArm accesses SmartMedia card via
109. rnal Device Verify proper electrode placement Verify proper electrode application Perspiration and dead skin must be removed from the electrode site Check for defective or out of date electrodes Check for defective broken or disconnected leadwires Check the patient s position The patient should remain motionless during the acquisition of a resting ECG ACI TIPI is disabled EnableACI TIPI The selected report is without interpretation Select Interpretation for the report The ACI TIPI required information is not entered Makesurethe agerange gender and chest pain complaints are entered The patient was entered as pediatric Makesure you enter an age range less than 16 Theoriginal ECG was acquired in an electrocardiograph without the ACI TIPI option Check setup If Suntech check protocol on Tango Check cables Serial and TTL Check TTL trigger Treadmill Ergometer Does Not Move Check protocol Check cables Check input output settings Check E mergency Stop switch Revision C MAC 5000 resting ECG analysis system 5 15 2017803 003 Troubleshooting Diagnostic Tests System Errors The following errors may occur while you are operating this system Y ou may be required to perform some action If you perform the recommended actions and the condition still remains contact authorized service personnel See How to Reach Us to find out how to contact GE Medic
110. rt a new diskette into the MAC 5000 the system will automatically format the diskette If you are using a previously used diskette and want to reformat it you can format it at a PC Cleaning Q Should dean the MAC 5000 A Clean the exterior surfaces of all the equipment and peripheral devices monthly or more frequently if needed Usea dean soft cloth and a mild dishwashing detergent diluted in water Wringthe excess water from the cloth Do NOT drip water or any liquid on the writer assembly and avoid contact with open vents plugs and connectors Drythesurfaces with a dean cloth or paper towel Revision C MAC 5000 resting ECG analysis system 5 17 2017803 003 Troubleshooting Frequently Asked Questions Battery Capacity System Setup Location Number Patient Questions What is the capacity of the battery Werecommend that the MAC 5000 be plugged into a wall outlet whenever it is not in use However the life of the battery is approximately 100 ECGs and one page reports or six hours of continuous operation without printing When entering in the patient data how dol get the Location field to automatically populate with the same number TheLocation number can be set in System Setup to save you from entering it for each test Goto System Setup Select Basic System Select Miscellaneous Setup Arrow down to Location and type in the number you want set as your default Then press Ente
111. s 1 internally powered Degree of Protection Against Ingress of Liquids Ordinary Handling of Disposable Supplies and Use only parts and accessories manufactured or recommended by GE Medical Systems Other Consumables Information Technologies Follow manufacturer s instructions for use for disposable consumable products Follow local environmental guidelines concerning the disposal of hazardous materials Patient Mode of Operation Continuous Patient Leakage Current 10 pA Degree of Protection Against Electrical Shock Type BF defibrillation protection for the patient cable acquisition module Maintenance Frequency Daily visual inspection and routine cleaning if needed performed by user Use a commercially available industrial strength disinfectant cleaner on any part of the equipment other than electrodes which comes into direct contact with the patient Every six months routine maintenance checks and test procedures performed by qualified technical personnel Repair Guidelines Calibration instructions equipment descriptions and all other information which will assist qualified technical personnel in repairing those parts of the equipment designated as repairable is available in the field service manual for the equipment We will make available upon request circuit diagrams and component parts lists for printed circuit boards deemed repairable by qualified technical personnel R
112. s that easily map to their standard PC equivalents simply append 0x00 to a datasheet Super O address offset to get a MAC 5000 Super I O address offset Video Interface Video Waveform Scroller There are numerous ways of achieving a scrolling waveform none of which is supported by standard LCD controllers The MAC 5000 provides scrolling through FPGA hardware placed between the LCD controller output and the LCD panel input To produce the scrolling effect it is necessary to maintain two virtual image planes one atop the other Static stationary objects are drawn in the static plane which appears nearest the viewer and may be either opaque or transparent Dynamic scrolling objects are drawn in the dynamic plane which appears behind the static plane and is always opaque though not necessarily visible The appearance of motion is achieved by continuously changing the start point for display of the dynamic plane from one video frame to the next Since the LCD controller does not support multiple image planes it is necessary to pack two planes of image data into a single frame buffer On the software side during drawing this is done by bit masking operations that allow separate manipulation of two virtual pixels in each byte of frame buffer memory Each 8 bit byte holds a pair of pixels one from the static plane and one from the dynamic plane On the hardware side part of each frame buffer byte the static plane is played directl
113. sistor R18 will limit the current and Moe s internal protection diodes will clamp the voltage to 3V C Battery Voltage Sensing Moe continuously monitors battery voltage during operation Excessively high pack voltages during charge will cause charge termination If battery pack voltage falls below a predetermined threshold during operation the battery gauge is immediately cleared to zero and the main CPU is notified of the critically low voltage System software then initiates an orderly shutdown to protect the battery pack and prevent loss of date ti me Ambient Temperature Sensor Extreme ambient temperatures are not favorable for battery charging Rapid changes in ambient temperature can cause premature or delayed charge termination by altering the pack s temperature Moe monitors ambient temperature via the thermistor TEMP to ensure that charging occurs only within the safe temperature range as well as to minimize the effects of changing ambient temperature on charge termination particularly to avoid prematuretermination which would givea false full reading on the gas gauge The battery and ambient thermistors are the same type and value to ensure reasonable tracking Capacitors C15 and C55 filter noise from the temperature sense lines Thermistor Bias Switch To reduce quiescent power consumption when the system is turned off a switch disables bias current tothe battery and ambient thermistors Q8 under control of MOE switch
114. surethe bezel surrounding the rear panel connectors is in place Make sure the release mechanism for the Smartmedia card functions properly Lower the top cover down around the display and set in position Snap therear of the top cover in place and then gently pulling on the thin plastic strip at the front of the top cover position it in place under the keyboard assembly 5 Replace the screws removed in disassembly MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Disassembly Guidelines Display Keyboard Assembly Removal 1 Remove the top cover following the procedures above Label the three cables connecting the display keyboard assembly to the main PCB Disconnect these cables from the main PCB NOTE Two of these cables have locked connectors that must be lifted up to release the cables 3 Presstheinternal access button and raise the top of the unit Remove one screw on the inside near the front edge of the top MD1322 004B 4 Working from the outside of the top remove the two TORX mounting screws located on the right side of the assembly Remove the two TORX screws from the hinge bracket Remove the screw from the display ground at the left of the hinge rod Revision C MAC 5000 resting ECG analysis system 4 11 2017803 003 Maintenance Disassembly Guidelines 7 Slide the display hinge metal rod to the left to release it from the mounting detent Two TORX Roll Pin Displa
115. system Revision C 2017803 003 Appendix B Technical Specifications evision MAC 5000 resting ECG analysis system 2017803 003 For your notes B 2 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix B Technical Specifications Technical Specifications Technical Specifications Display Item Description Type 264mm 10 4 in diagonal graphics backlit AM LCD Resolution 640 x 480 pixels with waveform enhancement Displayed Data Heart rate patient name ID clock waveforms lead labels speed gain and filter settings warning messages prompts and help messages Computerized Electrocardiograph Item Description Instrument Type 15 lead 14 channel microprocessor augmented automatic electrocardiograph Analysis Frequency 500 samples s sps ECG Storage 150 ECG s typical 200 maximum on removable media 1 44 MB 3 5 diskette Digital Sampling Rate 4000 samples s channel Analysis Pediatric and vectorcardiography Optional 12SL analysis HI RES and PHI RES late potential analysis Pre acquisition Provides 10 s of instantaneous ECG acquisition Dynamic Range AC differential 5 mV DC offset 320 mV Resolution 4 88 UV LSB 250 sps 1 22 uV LSB 500 sps Frequency Response 3 dB 0 01 to 150 Hz Common Mode Rejection gt 140 dB 123 dB with AC filter disabled Input Impeda
116. t to enter any other data However we recommend that you enter the patient name and identification number at the least If you are transmitting to the MUSE system you will want to enter the Location number as well If an emergency situation dictates that you must complete the test without entering the patient data make sure you edit the record to add the missing information before you transmit it to the MUSE system Losing Fields When Transmitting Q Why dol losethe Referring MD and Technician names off of my A reports when transmit records to the MUSE system Your MAC 5000 may be transmitting to the SDLC modem on the MUSE system instead of the CSI modem Check in System Setup to make sure you are transmitting to the MUSE system CSI phone number 5 20 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting Input and Output Connectors Input and Output Connectors The following pages detail the input output signals for those connectors The pin by pin descriptions identify the signal names and pin outs for each connector on the unit A Pins J1 Table 2 A Pins J1 Pin Name 1 Data 2 NC 3 Ground 4 5V 5 Clock 6 NC MD1322 008 COM1 COM3 4 Pins J3 Table 3 COM1 COM3 4 Pins J3 Pin COM1 Signal COM3 4 Signal 1 RTS COM3 TxD 2 CTS COM3 RxD 3 TxD 4 Ground 5 RxD 6 DTR COM4 TxD 7 12V 8
117. ted to the system software to avoid misinterpretation of motor fault indications When the door is open the motor connections are lost and Larry receives no tachometer feedback from the motor Without knowing the cause of the lost tachometer info Larry can only respond with a paper jam condition Moe s knowledge of the lid state is used to suppress this error message as well as prevent further print operations AC Power Monitor Moe senses the presence of AC power through a voltage divider R1 8 which drives the under voltage detection comparator in the Battery Charger Vtrip approx 7V The battery charger will not be enabled unless the DC power supply voltage is above approximately 21V Battery Pack The MAC 5000 uses a 15 cell NiMH Nickel Metal Hydride battery pack with integral thermal sensor for charge termination detection and self resetting thermal fuse for short circuit protection Charge current and normal system operating power are obtained from the AC power supply The charger circuitry monitors both battery charge current and power supply output current The battery is always charged at the maximum rate possible but system power demands take precedence over charger demands The charger automatically reduces charge current as required to keep the AC power supply output current within specified limits In the extreme during printing charging ceases and energy is taken from the battery to meet peak system demands When system pow
118. the following m If possible process any ECGs remaining in storage m f possible print out set up for future reference m Disconnect the unit from the AC wall outlet and remove the power cord from the unit Remove the battery m Remove the chart paper Take strict precautions against electrostatic discharge damage Trolley Disassembly 1 Lock the wheels remove the rear trolley panel then loosen the three captive screws located under the trolley MAC 5000 2 Pull the MAC 5000 up and up towards you 3 Lift theunit from the trolley Revision C MAC 5000 resting ECG analysis system 4 7 2017803 003 Maintenance Disassembly Guidelines Type S Trolley Disassembly Todismount the MAC 5000 from the Type S trolley follow the steps shown in the illustration below Power Supply NOTE A 10 TORX driver is required for disassembly and assembly of the Power Supply Removal 1 Turn the unit over so the bottom side is up 2 Usinga 10 TORX driver removethe three screws holding the power supply in place 3 Lift the power supply to expose the wiring harness and ground wire 4 8 MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Disassembly Guidelines Top Cover 4 Remove P2 from 2 on the power supply assembly and the ground wire connection from the power supply chassis Three Screws MD1322 001 Reassembly Reassemble the power supply reversing the steps for
119. ting ECG analysis system 2 23 2017803 003 Equipment Overview Theory of Operation The Four Stooges PS2 Keyboard Port External card bar code readers may be connected to the MAC 5000 via a PS 2 compatible keyboard port A small amount of 5V power is available at the connector to power the external device Power faults are detectable EMI and ESD protection are provided System management and some low level I O functions are implemented in preprogrammed 68H C05 microcontrollers Moving some I O functions out into small processors relieves the StrongARM of burdensome real time chores and moves the control hardware closer to the controlled devices potentially reducing EMI Localizing control also promotes reuse in future designs as the functions are self contained and reasonably portable Although there are four of these little fellows in the MAC 5000 each performing a different function there is only one firmware image By merging the code from each of the four functions into a single ROM image cost and confusion are reduced It is impossible to place a processor in the wrong spot on the board and a single pile of paperwork supports all of the MAC 5000 s 68H C05 production volume More detailed information may be found in the source code Start up Self Identification As each controller is released from reset it executes a common NhoAml routine to determine its identity on the board Each controller s environment is uniquely an
120. ting ECG analysis system Revision C 2017803 003 Keyboard J8 A he Balog aetna iecit t c m b educa ain il 5 24 CO ia tee eS 5 25 Power Supply Motor J11 0 0 cece cece cette nea 5 26 Thermal Printer 12 s dd ds ar beds 5 27 Floppy Disk Drive 13 00 isses 5 28 Acquisition Module J l4 s ce seh eo ec ot cette tee Ra 5 29 6 Parts LIS cier as 6 1 Ordering Parts e ci reete exei Na do 6 3 General Informatii e ce cese cei sy wees Rer b Eae e es 6 3 Field Replaceable Units 0cceee eee eee eee eee n eee eeeeees 6 4 Appendices Appendix A Abbreviations o oooocoooo A 1 Standard Abbreviations 0 ccc cece e sence eee eee eenees A 3 Appendix B Technical Specifications B 1 Technical Specifications 00 ccc cece eee eee eee eens B 3 DIS play 552 m een dees raza B 3 Computerized Electrocardiograph 0 cece cect teens B 3 WI ad ita B 4 Keyboard E A diete dk dee dod du ug B 4 A A E tet aoo de fet B 4 V ctorcardiograplly conte oot eco eed ead aa e etas B 4 Hi Res and PHi Res Signal Averaged Electrocardiography 0 5 B 5 PIAS ICAL a a os B 5 ENVIO MENTAL acacia a rada Re rb td Atina B 5 Salely Jo itte Sean ea Nacho a c a vaio o EN CA B 7 Appendix C Electromagnetic Compatibility C 1 Electromagnetic Compatibility EMC 0 cc cece eee eee eee eee C 3 Guidance and Manufacturer s Declaration Electromagnetic Emissions C 3 Guidance and
121. tion of the test level C 4 MAC 5000 resting ECG analysis system Revision C 2017803 003 Appendix C Electromagnetic Compatibility Electromagnetic Compatibility EMC Guidance and Manufacturer s Declaration Electromagnetic Immunity The MAC 5000 is intended for usein the electromagnetic environment specified below It is the responsibility of the customer or user to assure that the MAC 5000 is used in such an environment Immunity Test EN 60601 Test Level Compliance Level Electromagnetic Environment Guidance Conducted RF EN 61000 4 6 Radiated RF EN 61000 4 3 3 Vrms 150 KHz to 80 MHz 3 V m 80 MHz to 2 5 GHz 3 V rms 3 V m Portable and mobile RF communications equipment should not be used closer to any part of the equipment including cables than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter Recommended separation distance d 12 VP d 12 VP 80 MHz to 800 MHz d 2 3 p 800 MHz to 2 5 GHz where P is the maximum output power rating of the transmitter in watts W according to the transmitter manufacturer and dis the recommended separation distance in meters m Field strengths from fixed RF transmitters as determined by an electromagnetic site survey should be less than the compliance level in each frequency range Interference may occur in the vicinity of equipment marked with the following symbol 3 and peop
122. tor Switch Toreduce standby power consumption acquisition module power is switchable To protect the acquisition module from temporary brownouts on the main 12V supply power is obtained from a parasitic winding on the main 5V regulator This voltage is not well regulated so a linear regulator U 14 is used to provide regulation This regulator also sports an enable input which is used to disable power to the acquisition module when not in use The regulator also has build in current limit and over temperature shutdown for protection COMM Port Power Switch Current Limiter Power for external peripherals such as a modem or the KISS vacuum electrode pump is available on the COMM connectors Power may be turned on off under software control and current limiting is employed to protect internal operations from excessive external loads The current requirements and start up conditions of the KISS pump require very high currents U L limits power to external devices to 15 Watts for reducing the likelihood of fire during overload The KISS and U L requirements conflict to a degree that a simple current limiter will not satisfy both needs therefore a special current limiter circuit had to be devised Six Sigma project 27118 MAC 3000 Com Port Power Circuit project addressed this issue and is implemented in this design Since currents exceed 1 Ampere and the supply is 12 Volts a linear current regulator is impractical since the pass element would n
123. ty if necessary then monitors a discharge cycle F ollow the instructions on screen After the battery is discharged the device will shut off Plug the device back in to print the results Monitored information written to the floppy disk includes Battery Charge Test Discharge rate in mAH Battery temperature Battery charge status Percent of charge remaining This test completely discharges the battery if necessary then monitors a charge cycle Monitored information written to the floppy disk includes Charge rate in MAH Battery temperature Battery charge status Percent of charge Print Charge Discharge Test Results Prints the results of the last discharge or charge test to the writer 5 12 MAC 5000 resting ECG analysis system Revision C 2017803 003 Troubleshooting Diagnostic Tests Communication Tests COM Port Loopback Test Modem Test The Communications Port Loopback T est sends various ASCII characters out the COM port s transmit lines and expects the same character to return in it s receive lines Upon completion of the test the word Passed or Failed appears depending on the results For each of the options listed COM 1 COM2 COM3 and COM 4 perform the following steps 1 Select an option and press the Enter key 2 Follow the instructions on screen and install loopback jumpers in the selected serial port 3 Remove the loopback jumpers when the test is complete Connect a modem
124. upply provides operating charging power for the MAC 5000 Located in the bottom of the chassis Revision C MAC 5000 resting ECG analysis system 2 27 2017803 003 Equipment Overview Theory of Operation the power supply is disconnected from the CPU board when thelid is open The battery connection is maintained through the hinge so the CPU board is capable of operating for a limited time with the door open An LT1511 switchmode charge controller Battery Charger provides battery charge current This device monitors both battery and power supply current draw and maintains both at safe levels As system current draw increases the Battery Charger automatically decreases battery charging current to maintain total power supply current below the design level nominally 1A Nominal charge current is also 1A which is achievable only when the system is off Moe enables disables the charger via CR7 When Moe pulls the CHRGTRL linelow CR7 sinks current from the Battery Charger s VC pin shutting down the error amplifier and disabling switching R21 ensures that the charger remains off when Moeis starting up Lid Open Detection A self aligning connector routes power and motor signals from the power supply compartment to the CPU board When thelid is closed the DOOROPEN signal is shorted to ground When the lid is open a pull up resistor ensures a high level on DOOROPEN Moe monitors this line to detect lid open conditions that are repor
125. via BBus connections BBus is a single wire half duplex serial connection that places minimal hardware requirements on the microcontroller while yielding respectable bit transfer rates SOK B ps A common set of BBus commands allow the StrongARM to access 128 bytes of RAM in each microcontroller This dual port access allows the StrongARM to examine and modify internal variables in each controller while code is executing This ability is used to allow the unalterable HCO5 code to handle modest changes in hardware such as changes in paper drive gearing or battery pack capacity Curly Curly is responsible for configuring the FPGA and loading the first level bootstrap program into the Boot ROM emulated by the FPGA see previous section titled StrongARM Boot ROM Emulation When Reset is released Curly reads the PCB ID code from three port pins and then searches the SmartMedia card via the XBus data bus for a matching FPGA configuration image pages with ID Xn where n is the 3 bit PCB ID code 1 8 Once located the configuration image is loaded into the FPGA The boot code is stored in the SmartM edia card in a special format that Curly understands and contains a small program that enables the StrongARM to read the SmartM edia card by itself Once this first stage bootstrap program is loaded SmartMedia ID of Bn where n is the PCB ID Curly will release the StrongARM from reset and Curly shuts off effectively disappearing from the c
126. wer Pixel Test Hardware The FPGA provides all the interface logic for the thermal print head A MOSFET switch controls power A charge pump voltage doubler driven by the FPGA provides that switch s gate drive Additional circuitry currently unsupported is supplied to allow the measurement of individual dot resistance for automatic strobe width compensation and blown dot detection A switchable constant current source 6mA applies a test current tothe TPH power bus Larry then measures the TPH power bus voltage one of the four analog inputs he continuously monitors By loading a single black dot into the print head it is possible to measure its resistance A typical TPH has an average dot resistance of 650 Q Presuming negligible driver leakage current a single enabled dot would drop 3 9V While there are mitigating influences off pixel driver leakage current and on pixel driver saturation voltage that might make accurate pixel resistance measurements difficult it is certainly possible to differentiate pixels of nominal resistance from those that are blown open Super I O Peripheral Controller A PC standard Super I O peripheral controller provides floppy drive support two serial channels one IrDA compatible and a clock calendar Floppy Drive Support The Super I O provides support for a 3 5 1 44M Byte IBM format floppy diskette drive The FPGA provides DMA like interrupt support for the floppy controller A special chip select
127. wiss 10A 8FT Stress 401855 107 Revision C MAC 5000 resting ECG analysis system 6 5 2017803 003 Parts List Field Replaceable Units Field Replaceable Units Continued Item Part Number Power Cord Indian 10A 8FT Stress 401855 108 Wire Harness 10A 125V 6 5FT 401855 005 Wire Harness 10A 250V 6 5FT 401855 006 Power Cord Swiss 10A 250V 8FT 401855 007 Power Cord Indian 10A 250V 8FT 401855 008 Danish 220VAC 50HZ Stress 401855 009 Power Cord Australian 10A 250V 8FT 401855 010 Power Cord 10A 8FT Cont Euro Stress 401855 101 Power Cord Danish 10A 8FT Stress 401855 109 Power Cord AUST 10A 8FT Stress 401855 110 Power Cord 16A Euro 401855 201 Power Cord 13A British 401855 202 Power Cord 164 Italian 401855 203 Power Cord 164 Israeli 401855 204 Power Cord 15A AUST 401855 210 Cord Power Stress 125V 15A 12FT 405535 002 Cord Power RA 125V 13A 10FT 405535 006 Cord Power 18 3 SJ T 5509 001 Power Cord RA 125V 13A 12FT 405535 001 Power Adapter 230VAC DC ME 414582 222 Power Adapter 240VAC DC AA 414582 224 Power Adapter 240VAC DC UK 414582 225 Power Cord European Adapter 1FT 415359 001 Power Adapter 100VAC DC J apanese 414582 223 Barcode Scanner Kit English 2018626 001 Barcode Scanner Kit German 2018626 002 Barcode Scanner Kit French 2018626 003 Barcode Scanner Kit Spanish 2018626 004 Barcode Scanner Kit Swedish 2018626 005
128. y Ground Hinge Bracket Screws P d Hinge Two TORX Mounting Screws P4 1B 8 Slightly lift up on theright hand side of the display keyboard assembly and pull the assembly to the right to free the tabs from their mounting slots Do not lift the right side of the display too high or the plastic tabs may be damaged 9 When free from the main unit the display keyboard assembly can be separated in to two pieces allowing replacement of either the keyboard or display assembly NOTE Further disassembly of the LCD assembly is not recommended Replace as complete assembly Display Keyboard Reassembly DISPLAY GROUND DISPLAY GROUND ROLL PIN LCD FLEX CABLE FASTEN TO WRITER AS SHOWN P d LCD FLEX CABLE BACKLIGHT FLEX CABLE BACKLIGHT FLEX CABLE ALIGN FLEX TO PIN FLEX CABLE SLOTS CP6 1 P6 28 4 12 MAC 5000 resting ECG analysis system Revision C 2017803 003 Maintenance Disassembly Guidelines 1 Insert both flex cables through flex cable slots and position them as shown 2 Tilt thedisplay keyboard assembly to the left and with the roll pin of the hinge metal rod parallel to the left hinge base insert the rod intotheleft hinge base and lower the display keyboard assembly in place 3 Slidetabs intotheir mounting slots and set the display keyboard assembly in place 4 Connect the three cables from the display keyboard assembly to the main PCB Be sure to lift the locks up prior to attem
129. y into the LCD after suitable color mapping The remainder of the byte the dynamic plane is stored in a 1 line temporal buffer before being displayed The amount of delay applied to the line buffer before merging it with the static image data determines its placement on the screen By gradually changing the delay the dynamic image can be made to scroll Color Lookup Table CLUT Generally the dynamic plane is filled with waveforms and perhaps a few characters of text The static plane often contains text messages icons buttons and graphics The greater variety of object types displayed in the static plane demands a wider Revision C MAC 5000 resting ECG analysis system 2 15 2017803 003 Equipment Overview Theory of Operation range of colors For this reason each video data byte is split asymmetrically into five bits of static pixel data and three bits of dynamic pixel data This has come to be known as 5 3 format The 5 3 format provides a palette of 2 3 8 colors for dynamic objects and 2 5 1231 colors for static objects 1 of the colors is transparent leaving 31 real colors In practice to freeze dynamic objects in the static plane requires that the 8 dynamic colors be replicated in the static color map leaving only 31 8 23 new colors available for static objects The FPGA implements a writeable CLUT Color Lookup Table to map the pixel values to sensible colors on the LCD The CLUT provides 32 24 bit entries provi
130. y pulling out and up at the bottom 2 Usinga Phillips screw driver fasten the Card Reader assembly under the front handle where the holes are provided 3 10 MAC 5000 resting ECG analysis system Revision C 2017803 003 Installation P reparation for Use 3 Routethe cable around the trolley column towards the rear as shown below Cable Routing Rear View 4 Atthefront hold the cable to the side so it clears the front panel as you replace the panel 5 Plug the cable connector into port A then replace the back panel 6 Refer tothe MAC 5000 Operator s Manual for information on using the Magnetic Card Reader Revision C MAC 5000 resting ECG analysis system 3 11 2017803 003 Installation P reparation for Use Bar Code Reader Installation The Bar Code Reader and its mounting bracket are ready to install on the trolley Toinstall the Bar Code Reader and its cable mounting bracket on the trolley complete the following steps Barcode Reader Cable Clamp TTAR ian At Cable Clamp Bracket a WEE I zi OCT TUE p gt o A 1 Fasten the cable clamp bracket to the underside of the rear handle using a Phillips screw driver and the self tapping screws provided NOTE DO NOT overtighten Overtightening the screw may cause the screw to strip and clamp to fail Cable Clamp Bracket Cable Clamp 3 12 MAC 5000 resting ECG analysis system Revision C 201780

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