DPM 2 Service Manual
Contents
1. 6 5 6 6 Rear Cover Assembly Exploded View Parts List SN P N Description Qty 1 0000 10 43076 Speaker 1 2 0850 20 30708 Socket fixture 2 3 M04 051060 Tapping screw M2X8 4 4 0852 20 77425 Waterproof seal 2 2 5 M04 021000 Flat washer 1 6 0852 2077432 Spring 1 1 0852 20 77407 51 Rear cover 1 8 0852 20 77410 Lock pin 1 9 0852 20 77420 Leaf 3 1 10 0852 20 77419 Leaf 2 1 11 0852 20 77418 Leaf 1 1 12 0850 20 30704 SpO2 Communication cable socket 1 6 6 6 7 Replacement Parts To replace the parts refer to 5 Repair and Disassembly and the exploded views in this chapter NOTE e In the list below we list most of the replacement parts Contact our Customer Service Department for more replacement parts P N Description Qty 0852 20 77409 IR lens 1 0852 20 77411 51 Battery door 1 0852 20 77427 Battery door key 1 115 001546 00 Front Panel assembly 1 0852 20 77405 Button 1 0852 30 7743 1 LCD assembly kit CTL 1 801 0852 00005 00 LCD assembly kit TRULY 1 801 0852 00004 00 Main board 1 0852 20 77415 Screen fixture 2 1 0852 30 77452 Rear cover assembly 1 0852 30 7745 1 Battery adjusting bracket assembly 1 0850 20 30704 SpO Communication cable socket 1 0852 20 77407 51 Rear cover 1 0852 20 77410 Lock pin 1 047 000211 00 Screen lens 1 M05 010003 08 Lithium ion battery 1 0000 10 43076 Speaker 12. board fails 4 5 6 Power Supply Failures Symptoms Possible Causes Corrective Actions Battery cannot be Battery defective Replace the battery fully charged Main board defective Replace the main board Battery cannot be Battery defective Replace the battery charged Charger stand fails Replace the charger stand Main board defective Replace the main board NOTE e When the power module has a failure it may cause problems to other components e g the pulse oximeter suddenly breaks down during startup which may be caused by power supply protection of the power module In this case remove the power supply protection problem as per the procedure described in the table above 4 5 7 Software Upgrade Problems Symptoms Possible Causes Corrective Actions Bootstrap program Power failure or upgrade fails during bootstrap upgrade unintended power off Return the main board to factory for repair if you cannot start up the pulse oximeter Programs cannot be Incorrect connection upgraded Check that the PC communication cable properly connects the pulse oximeter and the personal computer Check that correct serial port on the personal computer is selected and the port is not used by other unit downloaded Wrong upgrade package Upgrade package shall be pkg files Select package according to programs to be upgraded FOR YOUR N
3. 2 3 4 2 Digital Circuit The digital circuit part mainly consists of microprocessor circuit and watchdog circuit The ADuC7024 microprocessor used on the SpO module is AD s 16 32 bit MCU It has an 8kb SRAM and a 62kb Flash EE memory a 10 channel 12 bit ADC a dual channel 12 bit DAC and a 12 bit data acquisition system The processor kernel is ARM7TDMI which supports 16 32 bit RISC command The system frequency is up to 40MIPS The ADuC7024 microprocessor supports downloading through UART and JTAG interfaces The chip s operating voltage is 2 7 to 3 6V and operating temperature is 40 to 125 C The chip adopted in the watchdog circuit is TPS3823 30 2 3 5 Charger stand The DC terminal of the charger stand is a round male power plug which is used to connect the pulse oximeter s DC power supply connector The AC terminal of the charger stand varies to match AC power lines of different areas The charger stand meets the following specifications E Input voltage 100 to 240V AC EH Input frequency 50 to 60Hz E Output voltage SV DC E Output current 1 24 2 11 FOR YOUR NOTES 2 12 I Testing and Maintenance 3 1 Introduction To ensure the pulse oximeter always functions normally qualified service personnel should perform regular inspection maintenance and test This chapter provides testing procedures for the pulse oximeter with recommended test equipment and frequency The service personnel should perform the testing and m
4. sleeping mode when the battery is fully charged The system identifies battery type through BC pole to avoid charging the alkaline batteries The charge time to 90 capacity is less than 2 hours and to 100 capacity less than 3 5 hours 2 3 2 5 Man machine Interfaces E Button To avoid pressing the Power button by accident you have to press and hold it for 2 seconds when you need to turn off the pulse oximeter However to turn on the pulse oximeter just press it momentarily E LED indicator The Power Indicating lamp is a LED that lights green and yellow It is located on the main board The status of the LED is specified as follows Green when the pulse oximeter is plugged in the charger stand and the AC mains is connected or when the battery is fully charged if a lithium battery is used Yellow when a lithium ion battery is used and is being charged Off When the AC mains is not connected 2 8 2 3 3 Main Board Interfaces The main board implements connection and communication with other parts and peripheral devices The interfaces located on the main board are listed below No Description What to connect y LCD connector LCD screen SpO board providing power supply and J2 SpO board connector paz P 8 power supp y communicating the SpO gt board SpO board connecting the SpO sensor to the J3 SpO sensor connector SpO board Multifunctional J4 SpO sensor or personal comp
5. voltage 3 7V capacity 1800mAh E Alkaline AA size batteries three batteries in series the total voltage 4 5V Connect the pulse oximeter to the charger stand and then connect the AC mains The battery will be charged automatically if a lithium ion battery is used However if alkaline batteries are used the batteries will not be charged 2 3 2 2 Output 1 SpO2 circuit 3 3V 20mA Peak 120mA 2 5V 10mA 2 Main control circuit 3 1V 5mA Peak 150mA 2 5V 50mA Peak 150mA 0 9V 20mA Peak 50mA 3 LCD backlight and speaker are directly run by the power supply 2 3 2 3 Power Supply Management 1 Shutdown delay When the battery voltage is too low an alarm message Battery Too Low is presented and the pulse oximeter will shut down automatically in maximum 10 minutes 2 Runtime In the case that SpO is monitored continuously audio indicators are off and backlight brightness is set to minimum the run time of alkaline batteries is 36 hours and lithium ion battery 24 hours using a new fully charged battery at ambient temperature 25 C 3 The power supply efficiency is not less than 80 percent 2 7 2 3 2 4 Charging the Lithium ion Battery The pulse oximeter is configured with a lithium ion battery charging circuit which can detect battery charging status and provide protection against overtime overcurrent as well as overtemperature charging It automatically charges the battery in circle and enters into the
6. 4 2 Part Replacement oee ree A oda 4 1 4 3 Software Version Check 4 2 4 4 Technical Alarm Check ui tt 4 2 4 5 Troubleshooting Guide ii a ine iai ia 4 3 4 5 1 Power On Off Failures niert e Ea e AR 4 3 4 52 Display Fall tan 4 3 4 5 3 Alarm Problems sin pirinin aiiai eA lectins a EE EAE a EEEN 4 4 4 5 A Button Failure aaa 4 4 4 55 Interface FallUtes oca een the deta beam A a as 4 4 4 5 6 Power Supply FallureS a 2 42 a rar Ra ae 4 5 4 5 7 Software Upgrade Problems ccccccecescescesseeseesecseceeceseeseeeeeesecaeceeeseeeeeneeenes 4 5 5 Repair and Disassembly cos0s0ussonssnsssnnsssnssnnnssnnssnnsnnnnsnnnssnnsnnnsnnnsnnnssnnsnnnnsnnnsnnsssnnner 5 1 3 1 Tools en BEA Basic EEE seien 5 1 5 2 Preparations for Disassembly cccccccesecseeescescesceseeeseescesseseeseeeeeeaeeaeesaeesesereeeeeaeeseaees 5 1 5 3 Disassembly UI e 5 2 3 31 Removing the Covers ai by ate ane ee 5 2 5 3 2 Removing the Main Board ccccccsscessesseeseesecseceecescesceeeeeecaecseceesnsceneensecseeneens 5 4 5 3 3 Removing the Speaker and SpO Communication Cable Socket 5 4 5 3 4 Removing the LCD Scream ad 5 5 5 35 Remove the Sereen Molt nati ed Balas 5 6 E NT 6 1 6 1 Jrtrod Cti Oi cuei niinen ei ke Aa Aa A 6 1 6 2 Mam Ult A A E RA ERR 6 2 6 3 Front Panel Assembly cto EEE EEEE EEE NE E EE 6 3 64 Main Board Assembly klar A E AA AREE GEE 6 4 6 5 Battery Adjusting Bracket Assembly 0 c ccccesceeee
7. 0850 20 30708 Socket fixture 2 6 7 Mindray DS USA Inc 800 MacArthur Blvd Mahwah New Jersey 07430 USA Tel 1 800 288 2121 Tel 1 201 995 8000 www mindray com P N 046 000177 00 2 0
8. DPM 2 Pulse Oximeter Service Manual mindray Intellectual Property Statement Mindray DS USA Inc hereinafter called Mindray DS owns the intellectual property rights to this product and this manual This manual may refer to information protected by copyrights or patents and does not convey any license under the copyright and the patent rights of Mindray DS nor the rights of others Mindray DS intends to maintain the contents of this manual as confidential information Disclosure of the information in this manual in any manner whatsoever without the written permission of Mindray DS is strictly forbidden Release amendment reproduction distribution rental adaption and translation of this manual in any manner whatsoever without the written permission of Mindray DS is strictly forbidden mindray is a trademark or a registered trademark of Shenzhen Mindray Bio Medical Electronics Co Ltd All third party trademarks that appear in this manual are used solely for editorial purposes and are the property of their respective owners Contents of this manual are subject to changes without prior notice O 2008 2010 Mindray DS USA Inc All rights reserved WARNING e Federal Law USA restricts this device to sale by or on the order of a physician FOR YOUR NOTES II Preface Manual Purpose This manual provides detailed information about the assembling dissembling testing and troubleshooting of the equipm
9. Devices cceeceeseeecseceseeteeeeeeeeesecaeceeeeeseeeeeeneenees 2 2 2 3 Man Un a e al ld erde niet 2 3 2 3 1 Mam Control Unite cuca a as 2 3 232 A SS ence ee a eee 2 6 2 3 3 Main Board Interfaces scr esccc vec csssyssususep eirese r eT asien 2 9 2 3 4 SPO Module iii ie 2 10 23 93 Charger dic 2 11 3 Testing and Maintenance ccsssossssnssossssnnssnnsnnssnnssnnnsnnnsnnnssnnssnnsnnnnsnnnssnnssnnsnnnssnnsssnnnen 3 1 Bl Introducti onin A ada 3 1 3 1 1 Recommended Frequency oocoococcconooncoononncnnonnnonnonnconconcon non nono non A RR ran ennan 3 2 DN o dd o A 3 3 3 Power On Ted a latas GUS 3 3 34 Performance Tests 22 22 REN HR hee aoe eile eh a eden 3 4 SALSO Test a ved cescte ata 3 4 3 4 2 SpO Test in Motion Mode ccccccscsscescescessescecseceecesceecessescesessecnsseeeesseeenaees 3 4 3 5 Electrical Safety Tests iia O eh Hees lect did 3 5 3 5 1 Enclosure Leakage Current Test ueenseessesseesseesnsensnnnnnennnennnnnnnenn coacci n 3 6 3 5 2 Patient Leakage Current Test resne seient eree reens Era eones BEER ESen 3 6 3 6 Output Interface Testi ri a iin a ita EE EEn 3 7 3 6 1 RS232 Port test u HR ms pn 3 7 3 6 2 Infrared Output Testi o 3 7 3 7 Program Upgrade aan Reich ua ah Sb er 3 8 A Troubleshooting ssccccscessossssssecenensssoosssncsensssovssooseenseansssosssocssunsoonssseseeasssassadeceensnososesseoseonses 4 1 APL Introduchon era res ak cass tenet saa cues Leese EE E avon deh ony nt cet ete en She 4 1
10. OTES 4 6 5 Repair and Disassembly 5 1 Tools The following tools may be required for disassembly and repair Small screwdriver Sharp nose pliers E Tweezers 5 2 Preparations for Disassembly Before disassembling the pulse oximeter stop monitoring the patient turn off the pulse oximeter and disconnect all the accessories and peripheral devices NCAUTION Before disassembling the pulse oximeter be sure to eliminate the static charges first When disassembling the parts labeled with static sensitive symbols make sure to wear electrostatic discharge protection such as an antistatic wristband or gloves to avoid damaging the equipment Put the cables or wires in place when reassemble the pulse oximeter to avoid short circuit When assembling the pulse oximeter be sure to select proper screws If an unfit screw is tightened by force the pulse oximeter may be damaged and the screw or the part may fall off during use resulting in unpredictable damage or human injury Be sure to follow correct sequence to disassembly the pulse oximeter Otherwise the pulse oximeter may be damaged permanently Be sure to disconnect all the cables before disassembling any parts Be sure not to damage any cables or connectors Be sure to place the removed screws and parts properly for convenient reassembly Protect them from dropping contaminating or losing 5 1 5 3 Disassembly Guide 5 3 1 Removing the Covers 1 As shown
11. aintenance procedures as required and use appropriate test equipment The testing procedures provided in this chapter are intended to verify that the pulse oximeter meets the performance and safety specifications If the pulse oximeter fails to perform as specified in any test repairs or replacement must be done to correct the problem If the problem persists contact our Customer Service Department The service personnel may ask the manufacturer for circuit diagrams parts and components list operation manual instructions for calibration and other documents needed for repairing if necessary CAUTION e All tests should be performed by qualified service personnel only Care should be taken to change the settings in the Maintenance menus to avoid loss of data e Service personnel should acquaint themselves with the test tools and make sure that test tools and cables are applicable 3 1 3 1 1 Recommended Frequency Check Maintenance Item Frequency Visual test When first used or not used for a prolonged time Power on test 1 When first used or not used for a prolonged time 2 Following each repair or replacement of main unit part SpO test PR test 1 When you suspect that the measurement is inaccurate 2 Following each repair or replacement of the SpO module 3 At least once every two years Real time data exporting test Trend data exporting test Wh
12. en you suspect that data exporting does not work properly Electrical safety tests Enclosure leakage current test Patient leakage current test At least once every two years 3 2 3 2 Visual Test Inspect the equipment for obvious signs of damage The test is passed if the equipment has no obvious signs of damage Follow these guidelines when inspecting the equipment Carefully inspect the case the display screen and the buttons for physical damage Inspect all external connections for loose connectors bent pins or frayed cables Inspect all connectors on the equipment for loose connectors or bent pins Make sure that safety labels and name plates on the equipment are clearly legible 3 3 Power On Test This test is to verify that the pulse oximeter powers up correctly The test is passed if the pulse oximeter starts up following this procedure In the case that the alkaline AA size batteries are used Install 3 alkaline AA batteries in the pulse oximeter and press the Power button The alarm indicating lamp flashes and then goes out the system gives a beep and displays the startup screen The startup screen disappears and the pulse oximeter enters the main screen By now the pulse oximeter starts up properly In the case that a lithium ion battery Remove the battery adjusting bracket and install the lithium ion battery in the pulse oximeter Press the Power button The alarm indica
13. ent to support effective troubleshooting and repair It is not intended to be a comprehensive in depth explanation of the product architecture or technical implementation Observance of the manual is a prerequisite for proper equipment maintenance and prevents equipment damage and personnel injury This manual is based on the maximum configuration therefore some contents may not apply to your pulse oximeter If you have any question please contact our Customer Service Department Intended Audience This manual is for biomedical engineers authorized technicians or service representatives responsible for troubleshooting repairing and maintaining the pulse oximeter Revision History This manual has a revision number This revision number changes whenever the manual is updated due to software or technical specification change Contents of this manual are subject to change without prior notice E Revision number 2 0 E Release time 2010 04 Password MH Maintenance password 321 Ill FOR YOUR NOTES IV Contents SAGA A esra inne a S 1 1 1 1 Safety nformat ati lead 1 1 TAS e 1 2 GIZ Cautions a A A 1 2 11 3 Notes Enns a E ai 1 2 1 2 Eg ipment Symbols tii 222 8 282 AA A ee 1 3 AI IN 2 1 DIO UCA ti re ee En oi eves evades Seppo ceded enero Sens 2 1 2 2 System Connections ii A evn ae 2 1 2 2 1 Mounting the Pulse Oximeter usssnsensenneenseennenennsennenneennnnnnnensennen nenne 2 1 2 2 2 Connectors for Peripheral
14. et the specifications indicated on the equipment s label or in this manual Protect the equipment from damage caused by drop impact strong vibration or other mechanical force during servicing 1 1 3 Notes NOTE Refer to Operation Manual for detailed operation and other information 1 2 Equipment Symbols Direct Current DC Attention Consult this manual before maintenance Auxiliary output connector Audio pause Battery door locked unlocked Power supply connector Left Right button Power button Up button Down button Date of manufacture Serial number Safety Class II equipment Type BF applied part defibrillation protected The following definition of the WEEE label applies to EU member states only This symbol indicates that this product should not be treated as household waste By ensuring that this product is disposed of correctly you will help prevent bringing potential negative consequences to the environment and human health For more detailed information with regard to returning and recycling this product please consult the distributor from whom you purchased it For system products this label may be attached to the main unit only FOR YOUR NOTES 2 Theory of Operation 2 1 Introduction This pulse oximeter is designed to monitor or measure the oxygen saturation and pulse rate of single adult pediatric and neonatal pat
15. fety analyzer using a power cord Power on the 601 safety analyzer and then press the 6 Patient leakage button on the analyzer s panel to enter the Patient leakage test screen Repeatedly press the Applied Part button to measure AC and DC leakage alternatively DC leakage reading is following by DC Under normal status the patient leakage current should be no greater than 10 pA Under single fault condition it should be no greater than 50 uA 3 6 3 6 Output Interface Test 3 6 1 RS232 Port test 1 Use aPC communication cable to connect the multifunctional connector of the pulse oximeter under test with the RS232 port of a personal computer Select Menu gt Trend to enter the trend window Press the Left button to enter the Trend Setup menu Set Export Port to Wire mul 2m Select Export Trend to enter the trend window verify that trend data is exported correctly 3 6 2 Infrared Output Test 1 Connect a personal computer with the infrared adapter and align the infrared adapter with the pulse oximeter s infrared port 2 Select Menu System to enter the system menu 3 Select RT Export and press the Left button to enable the infrared port 4 Run the software on the personal computer to verify that real time data is exported correctly NOTE e A communication protocol is developed and the interface is opened for infrared transmission A third party software is required to
16. ient The pulse oximeter also Presents audible and visual alarms in case of patient or equipment problems Enables the real time displaying reviewing storing and exporting of SpO and PR values Supports Pitch Tone which means the pitch of pulse tone rises as the oxygen saturation level increases and falls as the oxygen saturation level decreases Operates on either alkaline batteries or a lithium ion battery Offers wired or wireless communication with a personal computer 2 2 System Connections 2 2 1 Mounting the Pulse Oximeter The pulse oximeter can be mounted on a wall bracket or on a trolley support The wall bracket or trolley support can be ordered optionally Each type of mounting bracket is delivered with a complete set of mounting hardware and instructions for use To install the pulse oximeter refer to the instrutions for installation CAUTION Use mounting brackets we supply or approve If other compatible mounting bracket is used be sure it can be safely applied to the pulse oximeter The mounting bracket should be installed by our qualified service personnel or mechanical engineers who have adequate knowledge on it If other mounting solution is used the installation personnel and the customer should verify if it can be safely applied to the pulse oximeter and the customer assume the responsibility for any risk resulting from that 2 1 2 2 2 Connectors for Peripheral Devices The con
17. in the figure rotate the battery door key for 90 to loose the lock pin that secures the battery door Open the battery door and remove the batteries 5 2 2 Remove the adjusting bracket 3 Unscrew 2 M2X6 crosshead screws and 3 PT2X8 tapping screws Separate the front panel from the rear cover with your hands NOTE e Carefully separate the covers to avoid damage the wires and connectors 5 3 2 Removing the Main Board To remove the main board disconnect the speaker cable and the SpO communication 5 3 3 Removing the Speaker and SpO2 Communication Cable Socket 1 Unscrew 3 PT2X8 tapping screws and remove the speaker 5 4 2 Thrust the end of the SpO communication cable socket and push it out 5 3 4 Removing the LCD Screen Pry the LCD screen at the top right corner with tweezers disconnect the flexible cable socket and remove the LCD screen 5 5 CAUTION e Do not touch the LCD screen Disassemble the LCD screen in an environment as dust free as possible 5 3 5 Remove the Screen Mount Use sharp nose pliers to straighten the three clips that secure the screen mount to the main board Remove the screen mount 5 6 6 Parts 6 1 Introduction This chapter contains the exploded views and parts lists of the pulse oximeter It helps the service personnel to identify the parts during disassembling the pulse oximeter and replacing the parts The architecture of the pu
18. k the pulse oximeter identify and eliminate the troubles The troubles we list here are frequently arisen difficulties and the actions we recommend can correct most problems but not all of them For more information on troubleshooting contact our Customer Service Department 4 2 Part Replacement Printed circuit board PCB assemblies major parts and components of the pulse oximeter are replaceable Once you isolate a suspected PCB follow the instructions in 5 Repair and Disassembly to replace the PCB with a known good one Check that the trouble symptom disappears or the pulse oximeter passes all performance tests Defective PCB assembly can be sent to us for repair If the trouble symptom persists swap the replacement PCB and the suspected malfunctioning PCB the original PCB that was installed when you start troubleshooting and continue troubleshooting as directed in this chapter To obtain information on replacement parts or order them refer to parts by the part names and part number listed in 6 Parts 4 1 4 3 Software Version Check Some troubleshooting tasks may require you to identify the configuration and software version of your pulse oximeter for software compatibility For detailed information on version compatibility contact our Customer Service Department To check the version information 1 Select Menu gt System gt Maintenance gt gt enter required password gt Version gt gt In the Version menu
19. lse oximeter main unit is shown below Main unit Front panel Main board Battery adjusting Rear cover assembly assembly bracket assembly assembly 6 1 6 2 Main Unit Exploded View Parts List SN P N Description Qty 1 047 000211 00 Screen lens 1 2 115 001546 00 Front panel assembly 1 3 0852 30 77450 Main board assembly 1 4 0852 20 77409 IR lens 1 5 0852 20 77452 Rear Cover assembly 1 6 M04 002405 Crosshead screw M2X6 2 7 M04 051060 Tapping screw PT2X8 3 8 0852 30 77451 a CPt bracket assembly for AA size 1 9 0852 20 77411 51 Battery door 1 6 3 Front Panel Assembly Exploded View Parts List SN P N Description Qty Re 043 000086 00 Front panel 2 0852 20 77417 DC IN waterproof pad 1 3 0852 20 77404 DC IN lens 1 4 0852 20 77414 Screen fixture 1 1 5 0852 20 77406 Waterproof frame 1 6 0852 20 77405 Button 1 7 0852 20 77403 Alarm LED cover 1 6 3 6 4 Main Board Assembly Exploded View Parts List SN P N Description Qty 1 0852 30 77551 LCD assembly kit TRULY 1 2 0852 20 77423 LCD mount 1 3 0852 30 77428 Main board 1 6 4 6 5 Battery Adjusting Bracket Assembly Exploded View Parts List SN P N Description Qty 1 0852 20 77422 Leaf 5 1 2 0852 20 77421 Leaf 4 1 3 0852 20 77408 Battery adjusting bracket 1
20. ly from the Flash memory 2 3 1 3 Man machine Interfaces The functions of the buttons are listed below Button In measurement mode In menu mode Audio Pause Pauses audible alarms Pauses audible alarms button Up button Increases the beat Moves the cursor upwards or volume increases the value of selected menu item by one Down button Decreases the beat Moves the cursor downwards volume or decreases the value of selected menu item by one Left button Enters the main menu Enters a submenu or confirm the selection Right button Locks Unlocks buttons Returns to the previous menu or exits the current menu E LCD screen It is a 2 4 standard QVGA 320x240 TFT LCD with a 36 pin connector The LCD is connected with the BF531 through a bus 4 LEDs in series are used to backlight the LCD The maximum current is 15mA and driving voltage 13 2V The main control board provides DC power supply for the LCD and the backlight board E Alarm lamp The alarm lamp gives visual alarm signals which meet applicable requirements It consists of 4 LEDs in parallel The alarm LEDs receive electrical signal sent by the main board and convert it into optical signal which is then sent to the panel through a light conducting bar The alarm LEDs light up in red and yellow 2 5 E Audible indicators Audio files including alarm tone button tone and pulse tone are burned in a serial flash memory in advance To give o
21. nector are undamaged and properly connected LCD defective Replace the LCD Main board defective Replace the main board 4 3 4 5 3 Alarm Problems Symptoms Possible Causes Corrective Actions Alarm lamp does not light or extinguish but alarm sound is issued Main board defective Replace the main board No alarm sound is issued but alarm lamp lights up properly Alarm volume is set to Zero Select Menu gt Normal Setup adjust Alm Vol Speaker failure Replace the speaker Main board defective Replace the main board 4 5 4 Button Failure Symptoms Possible Causes Corrective Actions Buttons do not work Main board defective 4 5 5 Interface Failures Replace the main board Symptoms Infrared port does not work Possible Causes Real time export disabled Corrective Actions Select Menu System set RT Export to Start Infrared adapter defective Replace the infrared adapter Main board defective Replace the main board SpO measurement SpO sensor fails Replace the SpO sensor fails SpO communication Replace the SpO gt communication socket socket fails Main board defective Replace the main board Battery charging Charger stand or main Replace the charger stand or main board fails and Power indicating lamp does not light up
22. nectors for peripheral devices are located at the top right side and bottom of the pulse oximeter as shown in the figure Multifunctional connector Pulse oximeter Infrared port _ Power supply connector E Multifunctional connector It is a DB 9 connector which is used to connector a SpO sensor including reusable sensor disposable sensor and veterinary sensor to measure the oxygen saturation or connect a personal computer through a PC communication cable to export trend data E Infrared port It is a port through which a personal computer is communicated using a infrared adapter to export data in real time without affecting patient monitoring E Power supply connector It is a female power socket which is used to connect the charger stand s male power plug To avoid being mixed with other power supply adapters it has nonstandard size 2 2 2 3 Main Unit The pulse oximeter consists of main board SpO board display speaker batteries and charger stand The main board is composed of a main control unit and a power module The following diagram shows the structure of the main unit Main board Multifunctional connector Alarm LED cis cable control unit Infrared port Infrared Speaker adapter Other butto indicating LED Li ion battery module Alkaline battery Charger AC mains stand 2 3 1 Main Control Unit The main control unit provides the system with resources and support It contr
23. ols the LCD screen alarm LED speaker button operation and data storage It also implements communication with the SpO board power module and external interfaces The functional block diagram of the main control unit is shown below 2 3 ENS Alarm LED Buttons lt Watchdog BF531 3 Infrared amp JS a Communication Communication with power supply with SpO2 module 2 3 1 1 Power Supply The power module provides the main control unit with 3 1 V 2 5 V and 0 9 V power supple Label Voltage Applicable parts DVDD 3 1V Alarm LEDs Flash memory infrared light emitting IC PC communication cable LCD boost up circuit prestage audio optional amplifier VDDE 2 5 V DSP peripheral voltage SDRAM LCD logic infrared logic buttons and resetting VDDINT 0 9 V DSP kernel voltage 2 3 1 2 Core Control Unit The Core control unit consists of CPU SDRAM and Flash memory The CPU is ADI s DSP BF531 Its kernel running frequency is up to 400 MHz and external frequency up to 133MHz The kernel voltage is 0 8 V and the current consumed at 50 MHz is as low as 26mA The oscillating frequency of the CPU clock is 11 0592 MHz and its expected frequency is SSMHz which can be implemented through internal PLL frequency multiplication The SDRAM provides space for program running and the Flash memory provides space for storing program data lingual library and configuration information The BF531 starts direct
24. rates properly It cannot be used to verify the accuracy of the pulse oximeter or the SpO sensor To verify the accuracy clinical tests are required 3 5 Electrical Safety Tests WARNING Electrical safety tests are a proven means of verifying the electrical safety of the equipment They are intended for determining potential electrical hazards Failure to find out these hazards timely may cause personnel injury Commercially available test equipment such as safety analyzer etc can be used for electrical safety tests Be sure that the test equipment can be safely and reliably used with the pulse oximeter before use The service personnel should acquaint themselves with the use of the test equipment Electrical safety tests should meet the requirements of the latest edition of standards EN 60601 1 and UL60601 These electrical safety tests do not supersede local requirements All devices using the AC mains and connected to medical equipment within patient environments must meet the requirements of the IEC 60601 1 and should be put under electrical safety tests at the frequency recommended for the pulse oximeter Electrical safety tests are intended to check if there are potential electrical hazards to the patient operator or service personnel of the equipment Electrical safety test should be performed under normal ambient conditions of temperature humidity and pressure The electrical safety test plan de
25. scribed hereafter takes 601 safety analyzer as an example Different safety analyzers may be used in different areas Be sure to choose applicable test plan Connection of the equipment is shown below A B x 3 5 QO0Y gt AC mains programmable and frequency adjustable Isolation transformer on the leakage current testing apparatus Safety analyzer Unit under test Tools required Safety analyzer Isolation transformer 3 5 1 Enclosure Leakage Current Test Connect the 601 safety analyzer to an AC power supply 264 V 60 Hz Connect the SpO sensor to the RA terminal of the 601 safety analyzer Connect the pulse oximeter s charger stand to the auxiliary power outlet of the 601 safety analyzer using a power cord Attach one end of the red lead to the Red input terminal of the analyzer and the other end to the tinsel over the enclosure of the EUT Power on the 601 safety analyzer and then press the 5 Enclosure leakage button on the analyzer s panel to enter the enclosure leakage test screen Under normal condition the enclosure leakage current should be no greater than 100 uA Under single fault condition it should be no greater than 300 A 3 5 2 Patient Leakage Current Test Connect the 601 safety analyzer to an AC power supply 264 V 60 Hz Connect the SpO sensor to the RA terminal of the 601 safety analyzer Connect the pulse oximeter under test to the auxiliary power outlet of the 601 sa
26. ssesceeseeteeeeeeeeeaeeaeesaenteeeeneeeneeneeeaees 6 5 6 6 Rear Cover Assembly o ted ado ed o i ii 6 6 6 7 Replacement Parts ia died aid iv ee hair ER 6 7 1 Safety 1 1 Safety Information WARNING Indicates a potential hazard or unsafe practice that if not avoided could result in death or serious injury CAUTION Indicates a potential hazard or unsafe practice that if not avoided could result in death or serious injury NOTE Provides maintenance tips or other useful information 1 1 1 Warnings WARNING All installation operations expansions changes modifications and repairs of this product should be conducted by authorized personnel only Always disconnect the equipment with the charger stand and remove the batteries before disassembling the equipment Dispose of the packaging material according to local waste control regulations and your hospital s waste disposal protocols Keep the packaging material out of children s reach 1 1 2 Cautions ANCAUTION Make sure that no electromagnetic radiation interferes with the performance of the equipment when preparing to carry out performance tests Mobile phone X ray equipment and MRI devices are possible sources of interference as they may emit higher levels of electromagnetic radiation Before connecting the charger stand to the AC mains check that the voltage and frequency ratings of the AC mains me
27. test this item 3 7 3 7 Program Upgrade You can upgrade the pulse oximeter software by downloading the upgrade software through a serial port The upgrade software can run directly on a personal computer You can upgrade the following programs by connecting the pulse oximeter with the personal computer through a PC communication cable Bootstrap program System program Multilingual library BMP resource files including screen icons startup screen and standby screen General configurations including password and company name System function configurations SpO module program For details refer to help and instructions for program upgrade caution Disconnect the pulse oximeter from the patient and make sure the important data are saved before upgrade e Do not shut down or power off the equipment when upgrading the bootstrap program It may cause the equipment to break down Program upgrade should be performed by qualified service personnel only NOTE e After upgrading the bootstrap program re upgrade the system program and other programs to ensure compatibility Make sure the version of the upgrade package is what you desire If you want to obtain the latest upgrade package contact our Customer Service Department 3 8 4 Troubleshooting 4 1 Introduction In this chapter problems are listed along with possible causes and recommended corrective actions Refer to the tables to chec
28. ting lamp flashes and then goes out the system gives a beep and displays the startup screen The startup screen disappears and the pulse oximeter enters the main screen By now the pulse oximeter starts up properly Connect the pulse oximeter to the charger stand and then connect the AC mains If the battery is full the Power indicating lamp will light green Otherwise the battery will be charged automatically and the Power indicating lamp will light yellow When the battery is fully charged the Power indicating lamp turns to be green 3 3 3 4 Performance Tests 3 4 1 SpO Test Required tool SpO simulator 1 Connect the pulse oximeter with the SpO sensor 2 Connect the SpO sensor with the SpO simulator 3 Select the model and manufacturer of the SpO module under test set SpO to 96 and PR to 80 bmp 4 The SpO and PR readings should be within the ranges listed below SpO2 PR bmp 96 2 803 3 4 2 SpO Test in Motion Mode Required tool SpO simulator I Connect the pulse oximeter with the SpO sensor 2 Connect the SpO sensor with the SpO simulator 3 Select the model and manufacturer of the SpO module under test take measurement in the motion mode preset by the SpO simulator 4 The SpO and PR readings should be within the ranges listed below SpO2 PR bmp 3 5 NOTE e The SpO simulator can only be used to verify that the pulse oximeter ope
29. ut a sound the CPU reads audio data from the flash memory and controls the puse width modulation PWM to give out a audible signal The pulse oximeter supports pitch tone and multi level volume The speaker is connected with the main board and the audible signal is provided by the main board 2 3 1 4 Communication Interfaces E RS232 port The RS232 port implements communication through the CPU s UART module and the RS232 drive chip The RS232 drive chip which is integrated in the PC communication cable is electrostatically protected The CPU s UART module has an external drive IC to enforce driving and ensure protection EH Infrared port The BF 531 s UART supports infrared transmission The transmitted and received signals are connected directly to the infrared IC 2 3 2 Power Supply The power module provides hardware for power supply management It detects the level required by all hardware the priority of power supply type as well as the power supply status It is also controls the power indicating lamp and real time clock manages battery charging and communicates with the main control unit The block diagram of the power module is shown below Voltage detection Power button PIC16LF73 Communi cation with main board Power supply status 2 6 2 3 2 1 Input The pulse oximeter runs on a chargeable lithium ion battery or three alkaline AA size batteries E Lithium ion battery
30. uter connector DSP simulator J5 DSP simulator connector J6 Speaker connector Speaker J7 DC connector Charger stand Battery positive pole J8 YE p Battery positive pole connector Common earthing i J9 Charger stand or battery negative pole connector Lithium ion battery BC pole detecting batte J10 BC connector J 5 s y type m NTC connector Lithium ion battery NTC pole detecting battery temperature Power supply program J12 PP a Power supply MCU programmer downloading connector 2 9 SpO2 board Multifunctional connector DSP simulator Power supply MCU programmer Detecting Li ion battery temp Detecting battery type Common earthing 2 3 4 SpO Module The SpO module measures oxygen saturation and pulse rate and offers Pleth wave and perfusion strength It also offers motion and poor perfusion proof detects status and fault and communicates with the main control unit The SpO module block diagram is shown below C V converting circuit Gain control circuit K 7 Sp02 sensor AduC7024 h Sample holding circuit Watchdog circuit Communication board Sensor drive circuit 2 10 2 3 4 1 Analog Circuit The SpO module analog circuit adopts low power consumption design The voltage of signal amplifying part is 2 5V The first stage amplifying multiple is adjustable The sensor s driving voltage is 3 3V
31. you can view PCBA version and copyright information 2 Select Menu System Maintenance gt gt gt enter required password Version gt gt Software version gt gt In the Software version menu you can view system software version and module version 4 4 Technical Alarm Check Before troubleshooting the pulse oximeter check for technical alarm message If an alarm message is presented eliminate the technical alarm first For detailed information on technical alarm message possible cause and corrective action refer to the pulse oximeter s Operation Manual 4 2 4 5 Troubleshooting Guide 4 5 1 Power On Off Failures Symptom Possible Causes Corrective Actions The pulse oximeter fails to start Batteries are not installed The pulse oximeter is turned on when being connected with the charger stand Install batteries and then check if the pulse oximeter can be powered on Batteries discharged Replace the alkaline batteries or charge the lithium ion battery Batteries make improper electrical Check that batteries contact the pulse oximeter properly contact Power supply Check that power supply voltage meets the protection requirement Main board defective Replace the main board 4 5 2 Display Failures Symptoms LCD displays incorrectly Possible Causes Cables defective Corrective Actions Check that LCD cable and con
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