Mindray VS8 Service Manual Download Page 3

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VS 9/VS 8 Vital Signs Monitor Service Manual I

Release time: November 2021

Revision

Summary of Contents for VS8

Page 1: ...VS9 VS8 Vital Signs Monitor Service Manual ...

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Page 4: ...dray is strictly forbidden Release amendment reproduction distribution rent adaption and translation of this manual in any manner whatsoever without the written permission of Mindray is strictly forbidden is the trademark registered or otherwise of Mindray in China and other countries All other trademarks that appear in this manual are used only for editorial purposes without the intention of impr...

Page 5: ...ecomes necessary to return a unit to Mindray follow the instructions below 1 Obtain a return authorization Contact the Mindray Service Department and obtain a Mindray Customer Service Authorization Number The Mindray Customer Service Authorization Number must appear on the outside of the shipping container Return shipments will not be accepted if the Mindray Customer Service Authorization Number i...

Page 6: ...sts for service Any questions regarding the warranty should be directed to your local sales or service representative NOTE Upon request Mindray provides circuit diagrams component part lists descriptions calibration instructions or other information which assist the user s appropriately qualified technical personnel to repair those parts of the equipment which are designated by Mindray DS USA Inc ...

Page 7: ... not apply to your monitor 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 patient monitors Contact your local Mindray Service Organization for information on product courses which address service and suppo...

Page 8: ...VI VS 9 VS 8 Vital Signs Monitor Service Manual FOR YOUR NOTES ...

Page 9: ...nstallation 3 1 3 1 Installation Preparations 3 1 3 1 1 Environmental Requirements 3 1 3 1 2 Power Supply Requirements 3 1 3 1 3 Network Requirements 3 2 3 1 4 Bracket Strength Requirements 3 2 3 1 5 Tool Requirements 3 2 3 2 Unpacking 3 2 3 3 Installation of Accessories 3 3 3 3 1 Installation of Battery 3 3 3 3 2 Installation of Parameter Accessories 3 5 3 3 3 Installation of Plug in Modules if a...

Page 10: ...istance test 4 14 4 6 2 Equipment Leakage Current NC Test 4 16 4 6 3 Equipment Leakage Current Single Fault Test 4 17 4 6 4 Application Part Leakage Current Test 4 19 4 7 Recorder check 4 20 4 7 1 Test Preparations 4 20 4 7 2 Procedure 4 20 4 8 Battery Check 4 21 4 8 1 Test Preparations 4 21 4 8 2 Procedure 4 21 4 9 Factory Maintenance 4 22 4 9 1 Accessing Factory Maintenance Menu 4 22 4 9 2 Monit...

Page 11: ...ain Unit 6 4 6 3 1 A 1 Body Temperature Module 6 4 6 3 2 A 2 Recorder Assembly Door 6 6 6 3 3 B Removing Rear Cover 6 7 6 3 4 B 1 Rear Cover Assembly 6 11 6 3 5 C Removing Components on the Main Support and Front Cover Assembly 6 13 6 3 6 D Disassembling the Assembly into the Main Frame Assembly and Front Cover Assembly 6 17 6 3 7 Removing the Main Support Assembly D 6 18 6 3 8 G Removing the Shee...

Page 12: ...8 1 8 1 1 Material Package Upgrade 8 1 8 1 2 Upgrading Procedure 8 1 8 1 3 Test after Upgrade 8 1 8 2 Software Upgrade 8 2 8 2 1 Upgrade Through Network 8 2 8 2 2 Upgrade Through CMS 8 4 8 2 3 Upgrade Through USB Drive 8 7 8 3 Software Function Upgrade 8 10 8 3 1 Overview 8 10 8 3 2 Preparations for Software Function Upgrade 8 10 8 3 3 Software Function Upgrade 8 10 8 3 4 Test after Upgrade 8 11 A...

Page 13: ...death or serious injury or property damage WARNING Indicates a potential hazard or unsafe service practice that if not avoided could result in death or serious injury product damage or property damage CAUTION Indicates unsafe service practice that if not avoided could result in slight injury product fault or property loss NOTE Provides application tips or other useful information to ensure that yo...

Page 14: ...plicable waste control regulations of the hospital and keep them out of children s reach 1 2 3 CAUTION CAUTION When performing performance tests on the monitor make sure the monitor is not exposed to electromagnetic radiation Mobile phones X ray equipment or MRI devices are possible sources of interference as they may emit higher levels of electromagnetic radiation Before connecting the monitor to...

Page 15: ...tery indicator Input output USB connector Equipotentiality DEFIBRILLATION PROOF TYPE BF APPLIED PART DEFIBRILLATION PROOF TYPE CF APPLIED PART Gas inlet Gas outlet Graphical record Alarm reset NIBP start stop key Admit patient Network connector General warning sign Temperature limit Manufacturer Atmospheric pressure limitations Humidity limitations This way up Keep away from rain Fragile handle wi...

Page 16: ...on Plastic identification symbol CE marking Authorized representative of the European Community TrueBP is Mindray s new non invasive blood pressure measurement algorithm using linear inflation technology which can measure the blood pressure quickly and comfortably during cuff inflation ...

Page 17: ...e input devices such as buttons knob and touchscreen Enables software upgrade over the network The monitor and its peripherals form a system Main functions of the monitor in the system are as follows Supports features such as physiological parameter monitoring alarm and data review Supports recorder output Supports the nurse call signal Supports connection via Wi Fi and wired networks for other be...

Page 18: ... the earth potential difference between them to guarantee safety 2 USB connector It is used to connect barcode scanner USB flash drive and other equipment 3 Network connector The standard RJ45 connector is used to communicate with external equipment including CMS Gateway communication patient data export and system upgrades 4 Multi function connector It is used to connect to the nurse call system ...

Page 19: ...f this monitor to equipotential ground ends of other devices to eliminate the earth potential difference between them to guarantee safety NOTE The USB connector and the network connector are on one side of the monitor 2 3 Block Diagram of Hardware System The VS series vital sign monitors have a main unit The differences between VS9 and VS8 are shown as follows Screen VS9 is equipped with a 10 1 in...

Page 20: ...tor dual SpO 2 Power on off button board Quick body temperature probe Probe in position detection board SPO2 Infrared ear forehead thermometer NIBP air vent CO2 air vent connector Panel Panel One should be selected from the two bodytemperature boards Valve pump IoT antenna Bluetooth antenna Wi Fi antenna Main unit Trolley Wireless charging module reserved Quick body temperature isolated power boar...

Page 21: ...r Multifunctional connector Backup battery connector Connector board Battery connector board Wireless charging module reserved LCD 8 inch 1024x768 Nurse call serialport Display adapter board Parameter isolation zone Figure 2 Hardware Architecture of VS8 2 3 1 Multi parameter Module or Main Board As the core of the monitor the multi parameter module includes the main control module parameter module...

Page 22: ...k connectors of VS8 are on the multi parameter module The connector board only has a multi function connector and a backup battery connector Alarm Lamp Board The alarm lamp is a three color LED that can turn on in red yellow and cyan Power on off Button Board For VS9 it is necessary to develop a power on off button board which is mainly a switch and a working indicator Touchscreen and Touchscreen ...

Page 23: ...nector recorder LCD display LCD backlight Recorder power drive Alarm lamp circuit red and yellow Isolated parameter module SpO2 Quick body temperature OEMbody temperature Non isolated parametermodule NIBP CO2 module 15V LDO Power management MCU 3 3V Analog switch Figure 3 Power Architecture Diagram Main unit battery VS9 adopts the smart battery while VS8 adopts the ordinary battery with the output...

Page 24: ...eters Analysis results Figure 4 VS Data and Information Flow Diagram The vital sign monitor collects and analyzes through the parameter module or transmits the data of external measurement equipment such as weight scales or the parameter data directly input by the user to the main control system of the multi parameter module The system software displays the waveform numerical value and alarm infor...

Page 25: ...esult of temperature or humidity difference In this case do not start the monitor before the condensation disappears Environmental specifications are as follows Main Unit Item Temperature C Relative Humidity Non condensing Atmospheric Pressure kPa Working environment 0 40 without the body temperature module 5 40 with the body temperature module 15 95 57 0 107 4 Storage and transport environment 30...

Page 26: ...k specifications meet the requirements The appendix of this manual also provides information about network requirements 3 1 4 Bracket Strength Requirements If the monitor is installed on a wall mount bracket make sure that the wall is strong enough For details consult relevant professionals The hospital must ensure that the walls of the hospital are strong enough If the monitor is fixed on a ceili...

Page 27: ...t immediately the supplier if any item in the package does not conform to that listed in the packing list In case of damage during shipping keep the packaging for inspection and contact immediately the supplier Keep the packaging until the product acceptance is completed 3 3 Installation of Accessories 3 3 1 Installation of Battery 3 3 1 1 Installation of VS9 s Battery Pull the silicone handle on ...

Page 28: ...ed If a large capacity battery is required remove the small capacity battery bracket from the battery compartment and install the large capacity battery When installing the battery insert the battery cable into the socket on the board as shown in the figure There are two sockets for the large capacity battery and only one socket A for the small capacity batteries After the battery is installed rei...

Page 29: ...Peripherals Refer to USB Bluetooth network Connected Printers Scanners Body Temperature Modules Etc Refer to the online practices The quick body temperature and infrared body temperature modules are installed and shipped together with the monitor Welch Allyn body temperature bracket and Braun body temperature bracket need to be installed when upgrading as follows 1 Remove the body temperature sock...

Page 30: ...the sheet metal of the Welch Allyn or Braun body temperature bracket with the mounting hole of the rear cover and fix the module with two screws Fasten it with 2 tapping screws Body temperature socket cover Insert the sheet metal support into the hole on the ...

Page 31: ...monitor to the AC power and press the power switch to turn on the monitor The monitor provides a setup wizard When the monitor is turned on for the first time follow the wizard to complete the setup of the monitor You can choose the desired interface language For example choose English for English Select the language and tap Next ...

Page 32: ...l Signs Monitor Service Manual If this is your first monitor tap Create New Configuration If a configuration file is available you can choose Import Configuration Then tap Next Set the date time time zone and date format ...

Page 33: ...tor Service Manual 3 9 Set the units of measurement Select the department using the monitor The selection of the department will affect the default workflow settings You can modify the workflow after completing the setup wizard ...

Page 34: ...020003 00 Sanitizer Bracket Installation Instructions PN H 046 020269 00 Assembly Installation Instructions for Basket with Handle PN H 046 020270 00 Writing Panel Assembly Instructions PN H 046 020271 00 Assembly Instructions for Basket without handle PN H 046 020272 00 3 5 Post Installation Checks The monitor has been tested before it is shipped from the factory In order to ensure that the monit...

Page 35: ...the external AC power of the monitor Make sure that the AC power indicator is on 2 Turn on the device by pressing the power switch and the switch button indicator turns on 3 The monitor will perform a power on self test in the following procedure The screen turns on and shows the startup screen The system sounds a beep indicating the self test on alarm sounds is passed The alarm lamps light red ye...

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Page 37: ...must be performed only by qualified professional maintenance personnel Care should be taken when changing the settings in User Maintenance and Factory Maintenance menus to avoid loss of data Prior to testing maintenance personnel should ensure the applicability of test tools and cables and are skilled in using these test tools Check and replace the button cell periodically 4 1 1 Test Device See th...

Page 38: ...rature and forehead temperature modules NIBP Test Pressure test Leakage test Module calibration Temp test Sidestream CO2 test Leakage test Performance Test Module calibration Nurse call relay performance test If the user suspects that the nurse call does not work well Other Tests Recorder check Following any repair or replacement of the recorder Battery Check Functionality test 1 When first instal...

Page 39: ... 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 data plates are clearly legible 4 4 Power on test This test is to verify that the monitor can power up correctly Test Preparations None Procedure The test is passed if the monitor starts up by following this procedure 1 Install the battery into...

Page 40: ...ximeter measurements are statistically distributed and only about two thirds of the measurements can be expected to fall within the specified accuracy compared to CO oximeter measurements NOTE The SpO2 simulator can only be used to verify that the pulse oximeter operates properly It cannot be used to verify the accuracy of the pulse oximeter or the SpO2 sensor To verify the accuracy clinical tests...

Page 41: ... on the monitor 2 Connect the NIBP cuff to the NIBP connector on the monitor 3 Wrap the cuff around the cylinder as shown below 4 Select Main Menu Maintenance enter password Module NIBP NIBP Leakage Test The message NIBP Leakage Test is displayed in the NIBP parameter area After dozens of seconds the cuff automatically deflates which indicates that the NIBP leakage test is completed If no message ...

Page 42: ... Reference manometer calibrated with accuracy equal to or greater than 1 mmHg Procedure Follow this procedure to perform the test 1 Connect the monitor and the test tools as shown below 2 Before inflation the reading on the manometer should be 0 If not open the valve of the squeeze bulb to let the whole airway open to the atmosphere Close the valve after the reading turns to zero 3 Select Main Men...

Page 43: ...ures whether the NIBP overpressure protection circuit is working properly Test Preparations Test tools T shape connector Air tubing Balloon pump Rigid vessel with volume 500 25 ml Reference manometer calibrated with accuracy equal to or greater than 1 mmHg Procedure Follow this procedure to perform the test 1 Perform steps 1 4 in the NIBP Accuracy Test section 2 Select Main Menu Maintenance enter ...

Page 44: ...ature probe from the probe sheath insert a probe cover and place the probe into the oil tank or water bath 5 Wait till the Temp value displayed on the monitor stabilizes Verify that the displayed value is 0 1 C of the oil bath thermostat setting or reference thermometer Contact our Technical Support Department if the Temperature test fails NOTE Due to the different application environment and the ...

Page 45: ... to remove any residue 5 Alternately insert the reference instrument s and the instrument being verified into the aperture opening comparing the readings NOTE Accuracy Limits Comparison between the reference instrument s and the instrument being verified should be within 0 4 ºF 0 2 ºC for acceptable limits If not repeat the process In the event they still differ by more than the acceptable limits ...

Page 46: ...ds Select Main Menu Maintenance enter the password Module CO2 Calibrate to check that the current CO2 flow rate is less than 10 ml min If the alarm message remains on the screen it indicates that the module does not leak 4 5 4 2 CO2 Accuracy Test It tests the CO2 module accuracy Test Preparations Test tools Steel gas cylinder with 3 7 0 3 CO2 and balance gas N2 P N 0075 00 0033 01 T shape connecto...

Page 47: ...h 3 7 0 3 CO2 and balance gas N2 P N 0075 00 0033 01 T shape connector Tubing Follow this Procedure to Perform a Calibration 1 Make sure that the sidestream CO2 module has been warmed up or started up 2 Check the airway for leakage and perform a leakage test as well to make sure that the airway has no leakage 3 Open Calibrate Main Menu Maintenance enter the password Module CO2 Calibrate 4 In the C...

Page 48: ... the Calibrate menu If the calibration fails the message Calibration Failed is displayed In this case perform calibration again Troubleshooting for Calibration Failed Error Code or Failure Description Cause Handling Method Calibration fails Module measurement deviation exceeds the allowable range Replace the CO2 module 4 5 5 Nurse call relay performance test This test mainly tests the nurse call f...

Page 49: ...arcode scanner test 4 5 6 1 Test Preparations None 4 5 6 2 Procedure 1 Aim the barcode scanner at the barcode The sight should be in the center of the barcode Adjust the size of the scanning area to fit the target barcode 2 Pull the trigger The barcode scanner will scan the target barcode If the scan is successful a short intermediate beep sound will be made the indicator light will turn green and...

Page 50: ...lent to YY T0841 standard Test equipment Fluke ESA612 or ESA615 or equivalent equipment Connection Diagram Connect ESA612 to the ground power socket Connect to protective ground terminal or any exposed conductive surface on the chassis Connect the AC power cable of the device to be tested to the equipment output of the analyzer Figure 5 Connection Diagram 1 Insert the power plug of the analyzer in...

Page 51: ...end of the test lead to the zero jack 4 Press the function key Zero Leads The analyzer resets the measured value to zero to offset the resistance of the test lead 5 Remove the test lead from the terminal and connect it to the ground point of the protective ground column of the device or the metal shell part of the device Read the ground resistance 6 After the device is connected the measured resis...

Page 52: ...t to protective ground terminal or any exposed conductive surface on the chassis Connect the AC power cable of the device to be tested to the equipment output of the analyzer Figure 7 Connection Diagram 1 Insert the power plug of the analyzer into the socket and turn on the power button to enter the startup screen 2 Press the SETUP key and press the function key More to display other menu options ...

Page 53: ... default test which should already be selected 4 Press to apply the voltage and read the leakage current displayed on the screen 5 Use Polarity on the right to select normal polarity 6 Use Earth to select closed ground wire 7 Record the largest reading and related status The device leakage current should not exceed 100 µA in normal condition 4 6 3 Equipment Leakage Current Single Fault Test Test P...

Page 54: ...f the analyzer Figure 9 Connection Diagram 1 Insert the power plug of the analyzer into the socket and turn on the power button to enter the startup screen 2 Press the SETUP key and press the function key More to display other menu options Press the function key Instrument to display the instrument setting options Press the function key Standard and select the detection standard 62353 Figure 10 Eq...

Page 55: ...leakage current should not exceed 300 µA in single fault condition 4 6 4 Application Part Leakage Current Test Test Preparations This manual conducts electrical safety tests in accordance with the IEC62353 equivalent to YY T0841 standard Test equipment Fluke ESA612 or ESA615 or equivalent equipment 1 Connect the device to be tested 2 Insert the power plug of the analyzer into the socket and turn o...

Page 56: ...should already be selected 6 Press or to select the application part test configuration 7 Press to apply the test voltage and read the current displayed on the screen 8 Press to to go to the next application part if applicable 9 Use Polarity on the right to select normal or reverse polarity 10 Record the largest reading and related status The CF leakage current should not exceed 50 µA the BF leaka...

Page 57: ...n the monitor 2 Verify that the monitor works properly when running on AC power 3 Install the battery according to the procedures described in the Operator s Manual 4 Remove the AC power cord and verify that the monitor still works properly 4 8 2 2 Performance test Refer to the related content in Battery section in the operator s manual and verify the operating time of the battery meets the produc...

Page 58: ...gns Monitor Service Manual 4 9 Factory Maintenance 4 9 1 Accessing Factory Maintenance Menu Select the Main Menu quick key System column Maintenance enter the factory maintenance password select OK select Factory Maintenance ...

Page 59: ...le test Auto test After you select Start Auto Test the system automatically completes all tests in sequence Single test Select one item for test 4 9 4 Settings Access the Setup menu to perform parameter configurations 4 9 5 Debugging Access the Debug menu to perform debugging related settings 4 9 6 Power Information Access the Power Info menu to view the power status of the monitor 4 9 7 Clinical ...

Page 60: ... Record Test results Pass Fail Visual Inspection The enclosure display screen buttons rotary encoder power cord wall mount bracket and accessories have no obvious signs of damage The external connecting cables are not frayed and the connector pins are not loose and bent The external connectors are not loose or their pins are not bent The safety labels and data plate are clearly legible Power on te...

Page 61: ...n 1000 µA in single fault condition The patient leakage current is not greater than 10 µA in normal condition and is not greater than 50 µA in single fault condition Touchscreen Calibration The touchscreen is calibrated successfully Recorder check The recorder can print correctly and the printout is clear and correct Set the recorder to some problems such as out of paper etc the monitor should giv...

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Page 63: ...arn about and get the parts you need to replace refer to 7 Parts 5 3 Check before Powering on the Monitor After the AC power supply is connected check whether the AC indicator is turned on If not confirm whether the AC cable is connected to the socket and monitor reliably If both the AC external power supply and power cord are connected normally but the AC indicator is off the AC DC power module o...

Page 64: ... monitor s Operation Manual 5 6 Troubleshooting Guide 5 6 1 Power On Off Failures 5 6 2 Display Failures Fault Symptom Possible Cause Troubleshooting Power on failure AC mains not connected or insufficient battery power Verify the AC mains is properly connected or battery capacity is sufficient Cable failure 1 Verify the cable connecting the button board to the main board is properly connected Pow...

Page 65: ...erify the connection cable between the knob and the button board 2 Verify the cable connecting the button board to the main board is properly connected Knob damaged Replace the rotary encoder Button board failure Replace the button board Cable failure 1 Verify the signal cable and backlight cable connecting the display to the main board are correctly connected The touchscreen does not respond Touc...

Page 66: ...lume in Alarm Setup on the main menu Cable failure Verify the cable between the speaker and the connector board is properly connected The speaker is faulty Replace the speaker The main board is faulty Replace the main board 5 6 6 Battery Failures Fault Symptom Possible Cause Troubleshooting The battery cannot be charged and discharged Battery damaged Replace the Battery Cable failure Verify the ca...

Page 67: ...aper roller for foreign matter 2 Clean the thermal print head with an appropriate cleaning solution Recorder failure Replace the recorder 5 6 8 Output Connector Failure Fault Symptom Possible Cause Troubleshooting Data cannot be exported to USB flash drive patient data cannot be imported or exported The main board is faulty Replace the main board Connector board damaged Replace the connector board...

Page 68: ...ithin the range would not be handled The IP address is incorrect Check whether an IP address conflict exists in the network If yes reset the IP address 5 6 11 Wi Fi Failures Fault Symptom Possible Cause Troubleshooting Frequent dropouts or network disconnects Wi Fi signals in the region are instable Check the Wi Fi connection of the hospital The Wi Fi antenna falls off or is not securely connected...

Page 69: ... adapter board failure Replace the adapter board XX stands for the module used by the monitor such as NIBP SpO2 or Temp 5 6 13 Software Upgrade Failure Fault Symptom Possible Cause Troubleshooting Bootstrap upgrade fails Power failure or unintended power off during bootstrap upgrade Replace the main board The program cannot be upgraded The connection is faulty 1 Check that the PC has been correctl...

Page 70: ...Alarm Messages Refer to the operator s manual The battery display is abnormal after the power management program is upgraded No power off after power board software upgrade Upgrade the power management software again and then power off the entire system before restart ...

Page 71: ...eassemble the equipment If the incorrect screws are forcefully tightened the equipment may be damaged and the screws or part may fall off during use causing unpredictable equipment damage or human injury Be sure to follow the correct sequence when disassembling the monitor Disconnect all cables before disassembling any parts Be careful not to damage any cables or connectors Place the removed screw...

Page 72: ...ic main support G Detaching sheet metal main support D 2 18 Maintenance package for VS8 and VS9 NIBP inflation pump C 3 12 Maintenance package for 5600mAh battery adapter board D 1 17 NIBPdualair valve D 3 19 VS9 NIBPpipelinemaintenance package G 1 22 Power power supply board 15V 40W G 3 24 VS9 connector board maintenance package F 1 20 VS9 CO2 module upgradematerialpackage 21 VS9 M02D cable G 2 2...

Page 73: ...antenna F Detaching plastic support G Detaching sheet metal support F 2 17 Maintenance package for VS8 and VS9 NIBP inflation pump C 4 11 Power supply board F 1 16 NIBPdualair valve F 3 18 VS8 NIBPpipelinemaintenance package G 3 22 VS8 connector board maintenance package G 2 21 VS8 AC socket cable E 4 Detaching main board E 1 24 SpO2 board C 3 12 Cable connecting the power management board and pow...

Page 74: ...e performed by professionals Be sure to wear insulating gloves during the repair When optional functions are indicated the related operations may be involved if this function is selected for the machine otherwise the related operations are not involved 6 3 1 A 1 Body Temperature Module NOTE Different body temperature modules can be removed in the same way The quick body temperature module is used ...

Page 75: ...he battery door 3 Remove the body temperature cable from the socket as shown in the figure and remove the cable from the rear cover buckle 4 Remove the body temperature module from the rear cover and replace the body temperature module or the cable separately ...

Page 76: ...to the removal hole on the recorder door as shown in the figure to remove the recorder door 6 3 2 2 When Recorder is Used 1 Use a Phillips screwdriver to unscrew the 2 M3 6 pan head screws with washers at the position shown in the figure on the rear cover 2 Pinch the two lugs on the inside of the recorder as shown in the figure and press in the direction of the arrow to remove the recorder ...

Page 77: ...o replace the recorder module or recorder cable separately 6 3 3 B Removing Rear Cover Disassembling the assembly into rear cover assembly main bracket front cover assembly 1 Open the battery door Pull the battery buckle in the direction shown in the figure and remove the battery ...

Page 78: ...move the body temperature cable from the socket as shown in the figure perform this step if the monitor is equipped with a quick body temperature module or infrared body temperature module Otherwise skip this step 3 Remove the AC socket anti falling hook ...

Page 79: ...ead screws with washers at the position shown in the figure on the rear cover 5 Unscrew the 1 M3 6 pan head screw at the position shown in the figure in the recorder compartment Use a screwdriver to tilt the red circle in the figure and remove the latch of the connector panel ...

Page 80: ...e Manual 6 Unplug the power cable and speaker cable in the recorder compartment from the socket 7 Press the connector panel with your hand to make it completely sink into the rear cover lift the rear cover to the top and remove the rear cover ...

Page 81: ...or Service Manual 6 11 The assembly is disassembled into the rear cover assembly main bracket front cover assembly 6 3 4 B 1 Rear Cover Assembly VS9 enclosure maintenance package The rear cover assembly can be replaced as a whole ...

Page 82: ... on the rear cover to replace the battery door Uncover the tape that fixes the connection cable at the position shown in the figure on the rear cover to replace the connection cable 6012 power button connection cable between the main board and the alarm lamp board After replacement the tape needs to be re attached to fix the cable ...

Page 83: ...module will automatically pop up the Wi Fi module or Wi Fi antenna can be replaced separately Paste the antenna module and route the antenna cable as shown in the figure 6 3 5 2 C 2 Removing the Bluetooth Module Unscrew the 2 M3 6 pan head screws with washers shown by the arrow to replace the Bluetooth module package or the Bluetooth antenna cable separately Paste the Bluetooth antenna and route t...

Page 84: ...Service Manual 6 3 5 3 C 3 Removing the Battery Connector Board Unscrew the 2 ST3 3X8 tapping screws shown by the upper arrow and remove the sockets shown by the two arrows on the lower right to replace the 5600mAh battery adapter board ...

Page 85: ...n the panel 2 Unplug the CO2 air tube and cable indicated by the arrows on the panel and unplug the SpO2 cable and CO2 cable on the main board subject to the actual configuration of the monitor Replace the VS9 panel assembly or SpO2 cable separately Rotate the SpO2 cable clockwise to remove it The new SpO2 cable must be connected at the correct position ...

Page 86: ...socket and buckle shown by the arrow to replace the power management board and the power board connection cable 6 3 5 6 C 6 Removing the Connection Cable Between the Connector Board and Main Board Unplug the socket and buckle shown by the arrow in the figure to replace the connector board connection cable standard full configuration ...

Page 87: ... connector board connection cable SpO2 cable CO2 cable power connection cable connector board connection cable and the socket connecting to the main board at one end and other devices at the other end Unplug the pump valve connection cable and the six way pipe indicated by the arrow on the main board 3 Unscrew the 5 M3 6 pan head screws with washers as shown in the figure to disassemble the assemb...

Page 88: ...emoving the Main Support Assembly D 6 3 7 1 D 1 Removing the NIBP Valve Open the buckle shown by the arrow by hand and remove the two valves for replacement 6 3 7 2 D 2 Removing the NIBP Pump Cut the cable tie shown by the arrow to replace the inflation pump ...

Page 89: ...he pump and valve shown by the arrows by hand to replace the NIBP airway 6 3 8 G Removing the Sheet Metal Main Support and Plastic Main Support Assemblies Unscrew the 10 ST3 3X8 pan head screws as shown in the figure to disassemble the assembly into the plastic main support assembly F and sheet metal main support assembly G ...

Page 90: ...eplace the power 6 3 8 2 G 2 Removing the AC Socket Remove the black socket silicone washer as shown in the figure Unscrew the 2 M3 6 countersunk head screws and finally unscrew the 1 M4 8 combination screw to replace the VS9 AC socket cable 6 3 8 3 G 3 Removing the Connector Board Unscrew the 2 M3 6 pan head screws with washers at the position shown in the figure to replace the VS9 connector boar...

Page 91: ... replace the CO2 module assembly 6 3 10 E Front Cover Assembly 6 3 10 1 E 1 Removing the SpO2 Board Unscrew the screws corresponding on the small SpO2 board as shown in figure on the main board to replace the corresponding SpO2 board Small SpO2 board on Nellcor Small SpO2 board on Masimo 2 M2X4 stainless steel pan head screws 1 M2X4 stainless steel pan head screw 2 M3X6 pan head screws with washer...

Page 92: ...ng screws as shown in the figure and remove the cable socket to replace the alarm lamp board 6 3 10 3 E 3 Removing the Main Board Unscrew the 6 M3 6 pan head screws with washers as shown in the figure and remove the board Unplug the display cable socket on the back of the board at the red circle to remove the main board ...

Page 93: ...ck tape of the display cable indicated by the arrow and remove the tape fixing the touchscreen FPC to replace the display cable 6 3 10 5 E 3 2 Removing the Display Assembly Unscrew the 10 M3 6 pan head screws with washers as shown in the figure and remove the touchscreen FPC fixing tape and adhesive to remove the display assembly ...

Page 94: ...the AC power is disconnected and the monitor is off Before disassembly make sure that the point for placement is smooth and free of unrelated things otherwise the screen or the knob may be scratched or damaged All the operations must be performed by professionals Be sure to wear insulating gloves during the repair When optional functions are indicated the related operations may be involved if this...

Page 95: ... can be removed in the same way The quick body temperature module is used as an example here 1 Use a Phillips screwdriver to unscrew the 2 ST3 3 8 tapping screws at the position shown in the figure on the rear cover 2 Rotate the metal ring on the battery door counterclockwise unscrew it completely and open the battery door ...

Page 96: ...large capacity batteries Skip this step if no battery is loaded 4 Remove the tape in the battery compartment Remove the body temperature cable from the socket as shown in the figure and then the cable from the rear cover buckle If the body temperature cable is not faulty you do not need to remove the cable You only need to replace the body temperature module assembly to improve maintenance efficie...

Page 97: ...nd replace the body temperature module or the cable separately 6 4 2 A 2 Recorder Assembly Door 6 4 2 1 When No Recorder is Used Recorder door Insert a flat bladed screwdriver or tweezers or other similar small tools into the removal hole on the recorder door as shown in the figure to remove the recorder door ...

Page 98: ...crew the 2 M3 6 pan head screws with washers at the position shown in the figure on the rear cover 2 Pinch the two lugs on the inside of the recorder as shown in the figure and press in the direction of the arrow to remove the recorder 3 Unplug the recorder cable to replace the recorder module or recorder cable only ...

Page 99: ...ront cover assembly C 1 Rotate the metal ring on the battery door counterclockwise unscrew it completely and open the battery door 2 If a battery is loaded unplug the battery socket and take out the battery only one socket 1 for the small capacity battery and two socket 1 and 2 for large capacity batteries Skip this step if no battery is loaded ...

Page 100: ...y temperature cable from the socket 2 as shown in the figure and then pull it out from the position 3 under the battery compartment Perform this step if the monitor is equipped with a quick body temperature module or infrared body temperature module Otherwise skip this step 4 Remove the AC socket anti falling hook ...

Page 101: ...Signs Monitor Service Manual 6 31 5 Unplug the speaker cable in the recorder compartment from the socket and slot 6 Unscrew the 6 M3 6 pan head screws with washers at the position shown in the figure on the rear cover ...

Page 102: ...and the main frame front cover assembly 6 4 3 1 B 1 Removing the Rear Cover VS8 enclosure maintenance package The rear cover assembly can be replaced as a whole If the monitor is equipped with a multi function connector you need to use a blade or other suitable tools to cut off the stamp hole structure indicated by the arrow on the rear cover ...

Page 103: ...r cover to replace the battery door Main Frame Front Cover Assembly C 6 4 3 2 C 1 Removing the Wi Fi Module Pinch the fixing spring at the red circle 1 as shown in the figure and press it firmly The Wi Fi module will automatically pop up the Wi Fi module or Wi Fi antenna can be replaced Paste the antenna and install the socket at position 2 ...

Page 104: ...socket 1 to replace the Bluetooth module or the Bluetooth antenna cable separately Paste the Bluetooth antenna and route the cable at position 2 shown in the figure 6 4 3 4 C 3 Removing the Connection Cable of the Power Management Board Remove the connection cable of the power management board directly 1 ...

Page 105: ...ead screws 3 to replace the power module 6 4 3 6 C 5 Removing the Panel and SpO2 Signal Cable 1 Unplug the NIBP air tube 1 on the panel and unplug the SpO2 cable 2 two cables for the dual SpO2 model and one cable for the single SpO2 model subject to the actual configuration of the monitor Replace the VS8 panel assembly or SpO2 cable separately 2 Rotate the SpO2 cable clockwise to remove it The new...

Page 106: ...CO2 cable and power connection cable to the main board If the monitor is equipped with a multi function connector remove the connector board connection cable socket indicated by the arrow on the main board Otherwise the cable does not exist and you can skip the step 2 Unscrew the M4 8 combination screw 1 unplug the pump valve cable socket 2 and unplug the two air tubes 3 connecting to the sensor o...

Page 107: ... assembly D and front cover assembly E The main support assembly D is disassembled into the plastic main support assembly F and sheet metal main support assembly G 6 4 5 F Detaching the Plastic Support Unplug the AC cable socket 1 and remove the sheet metal from bottom to top to disassemble the assembly into the plastic main support assembly and the sheet metal main support assembly ...

Page 108: ...emove the valve assembly note the installation position of the fast and slow valve during installation 6 4 5 2 F 2 Removing the NIBP Pump Cut off the two cable ties that fix the pump at position 1 and unplug the air tube 2 to replace the inflation pump and NIBP pipeline components separately When installing the pump cable wind the cable around the column marked by the red circle in the figure ...

Page 109: ... NIBP Air Tube Same as F 2 Removing the NIBP Pump 6 4 6 G Sheet Metal Main Support Assembly Unplug the AC cable socket 1 and remove the sheet metal from bottom to top to disassemble the assembly into the plastic main support assembly and the sheet metal main support assembly ...

Page 110: ...the side of the socket to replace the connector board cable 6 4 6 2 G 2 Removing the AC Socket Unscrew the M4 8 combination screw 1 and unscrew the two M3 6 pan head screws 2 with washers to replace the VS8 AC socket cable 6 4 6 3 G 3 Removing the Connector Board Unscrew the 2 M3 6 pan head screws with washers at the position shown in the figure to replace the VS8 connector board ...

Page 111: ... Front Cover Assembly 6 4 7 1 E 1 Removing the SpO2 Board Unscrew the screws corresponding on the small SpO2 board as shown in figure on the main board to replace the corresponding SpO2 board A Small SpO2 board on Nellcor 1 M2X4 stainless steel pan head screw ...

Page 112: ...he 2 ST3 3X8 tapping screws as shown in the figure and remove the cable socket to replace the alarm lamp board or alarm lamp board cable 6 4 7 3 E 3 Removing the Encoder Cable Unscrew the 6 M3 6 pan head screws with washers as shown in the figure and remove the board Unplug the display cable socket on the back of the board at the red circle to remove the main board ...

Page 113: ...VS 9 VS 8 Vital Signs Monitor Service Manual 6 43 6 4 7 4 E 4 Removing the Main Board 1 Unscrew the 7 M3 6 pan head screws with washers marked by the red circle in the figure ...

Page 114: ...isplay FPC cable if a touchscreen is used unplug the touchscreen cable socket 2 to remove the main board 6 4 7 5 E 4 1 Removing the Encoder Unscrew the 2 ST3 3 8 tapping screws 1 and slowly lift the board in the area with no device on the board or directly clamp the knob with pliers and unplug the knob to replace the encoder board and knob separately ...

Page 115: ... 3 Removing the Display Assembly 1 If the monitor is equipped with a touchscreen remove the display FPC fixing tape and remove the back parameter insulating sheet shown in the figure 2 Unscrew the 11 ST3 3 8 tapping screws shown in the figure The sheet metal can be removed and the front cover assembly and display assembly can be replaced separately or as a whole ...

Page 116: ...6 46 VS 9 VS 8 Vital Signs Monitor Service Manual 6 4 7 8 E 4 4 Removing the Touchscreen Assembly Same as E 4 3 ...

Page 117: ...s The optional exclusive parts or assemblies as well as the number of screws and copper pillars under the maximum configuration conditions are also listed in the parts details without noting the change of screw number and copper pillar number caused by exclusive installation NOTE The Part Numbers listed in the Part Number columns of all parts lists are used only to assist the maintenance personnel...

Page 118: ...Manual 7 2 1 2 Parts Details No Material Description FRU Part Number Remarks 1 VS9 front cover and touchscreen assembly 115 073821 00 2 Main frame assembly 3 VS9 rear cover assembly 115 073899 00 7 2 2 Front Cover Assembly 7 2 2 1 Exploded View ...

Page 119: ...ntenance package 115 073776 00 3 VS9 BOE display assembly maintenance package 115 073833 00 4 VS9 fully configured main board Masimo or Nellcor SpO2 maintenance package with FDA software 115 073851 00 FDA 5 VS8 VS9 Wi Fi module material package 115 073872 00 6 VS8 VS9 Nellcor SpO2 material package 115 073852 00 6 VS8 VS9 Masimo SpO2 material package 115 073853 00 7 2 3 Rear Cover Assembly 7 2 3 1 ...

Page 120: ...VS8 VS9 Exergen IR body temperature upgrade material package 115 073881 00 1 VS8 VS9 WelchAllyn body temperature DOCK material package 115 073878 00 2 VS9 enclosure maintenance package 115 073899 00 3 VS8 VS9 recorder material package 115 073874 00 4 VS9 battery door maintenance package 115 073906 00 7 2 4 Main frame assembly 7 2 4 1 Exploded View 7 2 4 2 Parts Details No Material Description FRU ...

Page 121: ...mAh battery transition board 115 059753 00 5 VS9 CO2 module upgrade material package 115 073896 00 6 POWER SUPPLY BOARD 15V 40W 022 000125 00 7 VS8 VS9 Bluetooth module material package 115 073873 00 8 VS9 connector board maintenance package 115 073888 00 Full configuration 9 VS9 panel assembly maintenance package 115 073892 00 Single SpO2 does not support CO2 115 073895 00 Support CO2 7 2 5 Fully...

Page 122: ...0 2 Assembly maintenance package for basket without handle 045 004448 00 3 3 threaded connection casters with brake 034 000728 00 7 2 6 Standard Trolley Assembly 7 2 6 1 Exploded View 7 2 6 2 Parts Details No Material Description FRU Part Number Remarks 1 Assembly maintenance package for basket with handle 045 004291 00 2 3 threaded connection casters with brake 034 000728 00 ...

Page 123: ...anual 7 7 7 3 VS8 Parts 7 3 1 Main Unit 7 3 1 1 Exploded View 7 3 1 2 Parts Details No Material Description FRU Part Number Remarks 1 VS8 front cover assembly 115 073736 00 Touchscreen assembly 2 Main frame assembly 3 VS8 rear cover assembly ...

Page 124: ... VS9 alarm lamp board PCBA maintenance package 115 073776 00 4 VS8 display assembly maintenance package Tianma 115 073745 00 5 VS8 fully configured main board Masimo or Nellcor SpO2 maintenance package with FDA software 115 073811 00 FDA 6 VS8 VS9 Wi Fi module material package 115 073872 00 7 VS8 VS9 Nellcor SpO2 material package 115 073852 00 7 VS8 VS9 Masimo SpO2 material package 115 073853 00 8...

Page 125: ...erature module material package without probe 115 073875 00 1 VS8 VS9 IR body temperature Dock Exergen material package 115 073876 00 1 VS8 VS9 WelchAllyn body temperature DOCK material package 115 073878 00 2 VS8 enclosure maintenance package 115 073908 00 3 VS8 VS9 recorder material package 115 073874 00 4 VS8 battery door maintenance package 115 073909 00 Exergen cable 040 003354 00 ...

Page 126: ...air pump maintenance package 115 073871 00 3 POWER SUPPLY BOARD 15V 40W 022 000125 00 4 VS8 VS9 Bluetooth module upgrade material package 115 073873 00 5 VS8 fully configured connector board maintenance package 115 073907 00 6 Dual air valves 6VDC 300 mmHg 125 mm line length custom 082 002237 00 7 VS8 panel assembly maintenance package single SpO2 115 073910 00 7 VS8 panel assembly maintenance pac...

Page 127: ...sembly 7 3 5 1 Exploded View 7 3 5 2 Parts Details No Material Description FRU Part Number Remarks 1 Writing panel assembly maintenance package 045 004447 00 2 Assembly maintenance package for basket without handle 045 004448 00 3 3 threaded connection casters with brake 034 000728 00 ...

Page 128: ...l 7 3 6 Standard Trolley Assembly 7 3 6 1 Exploded View 7 3 6 2 Parts Details No Material Description FRU Part Number Remarks 1 Assembly maintenance package for basket with handle 045 004291 00 2 3 threaded connection casters with brake 034 000728 00 ...

Page 129: ...odule upgrade package For upgrading the VS8 nonstandard machine only and there is no limitation for VS9 5 115 073875 00 Quick temperature upgrade package 6 115 073878 00 WelchAllyn bracket upgrade package NOTE The packages available to you vary with the configuration of the monitor you buy Select packages according to the configuration and upgrade requirements of the monitor An upgrade package inc...

Page 130: ...l through the network This tool can directly run on a PC We recommend you to connect a PC to the monitor through a switch or router for network upgrade If the monitor is connected to the Mindray central monitoring system CMS the network upgrade can be completed on the CMS The monitor can also be upgraded through a specially authorized USB drive which contains the USB drive upgrade BIOS program PN ...

Page 131: ...INESE Japanese 8 2 1 2 Connecting PC and Monitor Make sure that at least one network card is installed on the PC The PC is connected to the monitor through the network card 1 Connect the PC to the monitor through the hub PC connected to the hub through a network cable Connect one end of the network cable to the network card slot of the PC and the other end to the hub slot Hub connected to the moni...

Page 132: ...the storage location is the model package path run the installed system network upgrade tool software click Select New Model Package select the LEGO Tool model package click Open and then click OK as shown in the following figures 2 In the Product Type Selection dialog box select LEGO as the machine type The following figure shows the PC screen 8 2 2 Upgrade Through CMS This monitor can be upgrade...

Page 133: ...ethod 2 Choose Main Menu Maintenance Network Setup select Device Discover enter the IP address of the main server for example 196 76 0 129 and then check whether the main server is connected 8 2 2 2 Upgrading CMS Station 1 Start the CMS station program and enter a password to access the server setting screen 2 In Device Management find Version Upgrade Management as shown in the following figure an...

Page 134: ... Select Device screen pops up Check the monitor to be upgraded and click OK 6 In this case the monitor status will not change and keeps in original working status If you want to power off the monitor the monitor screen will display the information similar to the following to ask you whether to update the version ...

Page 135: ... in the monitor maintenance menu to confirm that the version is correct 8 2 3 Upgrade Through USB Drive 8 2 3 1 Preparing the Directory Structure Required tools USB drive a common USB drive in the FAT32 format e g the USB disk of Kingston Netac or other models with a memory of 2GB or above Steps 1 Create the following directory under the root directory of the USB drive UPGRADE_AMP LEGO 2 Copy the ...

Page 136: ... power on keep sliding two or more fingers on the touchscreen to enable the monitor to enter the upgrade mode 8 2 3 3 Selecting the File for Upgrade Only one upgrade package file is available at present It is selected by default If multiple upgrade packages exist they are displayed in the left and right columns and a maximum of 16 upgrade packages can be displayed This upper limit cannot be exceed...

Page 137: ... to confirm the selected upgrade program 8 2 3 4 Completing Upgrade When the screen below is displayed the current upgrade is completed The upgrade takes effect after the monitor is restarted CAUTION Disconnect the monitor from the patient and make sure that important data are saved before upgrade Do not shut down or power off the equipment when upgrading the BIOS program and FPGA program Otherwis...

Page 138: ...tions available to you vary with the configuration of the monitor you buy and your local regulations This manual lists all software function upgrade items However some of them may not apply to your monitor No Upgrade Item Upgrade Code Remarks 1 CCHD 2 Orthostatic blood pressure measurement 3 VitalsLink 8 3 2 Preparations for Software Function Upgrade Provide the following information when applying...

Page 139: ...e External Then click Import to complete installation 8 3 4 Test after Upgrade After software function upgrade is complete perform test according to the following steps Select Main Menu System License Local and check whether the software functions upgraded are in the Installed status ...

Page 140: ...8 12 VS 9 VS 8 Vital Signs Monitor Service Manual FOR YOUR NOTES ...

Page 141: ...ing 5GHz frequency band is recommended whenever possible There are more interference sources in 2 4GHz frequency band Private APs and wireless routers are not allowed These devices may cause radio interference and result in monitor and CMS data loss If wireless network signal is poor there may be a risk of CMS data loss A 2 Network Deployment Process If a hospital has a WLAN available follow the n...

Page 142: ...uest the hospital to perform corresponding setting and adjustment Pass or fail Pass A4 Sign a contract A3 Carry out field investigation Figure 14 Network Deployment Flowchart A 2 1 Output List Operation Output Requirement Template A0 Wireless network requirements of the Mindray monitor Determine the wireless network deployment requirements of the Mindray monitor Wireless network requirement table ...

Page 143: ...ter the new WLAN is established it cannot meet the requirements of the Mindray monitor in terms of co channel interference The figure below shows the network deployment process Mindray agency marketing or sales personnel Mindray Headquarters Mindray agent service personnel A1 Communicate with the hospital regarding the order intention A5 Install the equipment and confirm normal operation of the sy...

Page 144: ...rements Wireless coverage requirements 1 Wi Fi coverage signal strength RSSI 65 dBm The RSSI is the value displayed on the monitor 2 Co channel interference 20 dB The strength of the co channel interference AP signal is at least 20 dB lower than that of the signal of the AP used by the monitor 3 Ping delay The average delay of the PC or mobile phone is less than 100 milliseconds and the packet los...

Page 145: ...ooping If the monitor adopts multicast the IGMP snooping function is enabled 3 Multicast If the monitor adopts multicast the network multicast function should be enabled 4 Beacon and DTIM AP DTIM 1 Beacon 100 milliseconds 5 Service port Refer to the white paper of the Mindray monitor network The monitor requests network devices to open some TCP UDP ports A 4 Network Acceptance A 4 1 Tools and Reso...

Page 146: ... completes required self check items as instructed in the network acceptance table Then the service personnel or authorized party performs a field test to confirm the remaining content and fills in the network acceptance table Any failed item should be adjusted before the monitor is installed During the test enable the Wi Fi network SSID broadcast to ensure that the Wi Fi SSID can be searched out ...

Page 147: ...or the AP The service personnel obtains the AP model from the related hospital staff or directly observe it Obtain the AP data manual according to the model to confirm the AP related capabilities 2 Device density A maximum of 12 devices including the monitor and other devices can be connected to one AP at the same time Check if this requirement is satisfied together with the IT department of the h...

Page 148: ...e monitor adopts multicast the IGMP snooping function is enabled Check if this requirement is satisfied together with the IT department of the hospital 3 Multicast If the monitor adopts multicast the network multicast function should be enabled Check if this requirement is satisfied together with the IT department of the hospital 4 Beacon and DTIM AP DTIM 1 Beacon 100 milliseconds Check if this re...

Page 149: ...less than 65 dBm when you walk about stop at this position and perform observation for 30 seconds If the RSSI value is not less than 65 dBm in 66 of the time the coverage requirements are met Monitor installation confirmation table Test Item Result Pass Fail or NA Execute the Ping command on the central monitoring system for the monitor Make sure that the average delay is less than 250 millisecond...

Page 150: ...G Options 2 4G 5G Auto 2 4G Only the 2 4 GHz band is used 5G Only the 5GHz band is used Auto The 2 4 GHz and 5 GHz bands 5 GHz first are used Authentication server type ACS Options ACS and SBR ACS refers to the CISCO access control server SBR refers to the server different from ACS This is applicable only when the security type is Enterprise BG Channel Specified Options all specified none You can ...

Page 151: ... PMK caching Standard Options Standard and OPMK Standard refers to PMK caching OPMK refers to random key caching Trigger 70 The NIC will try roaming when the RSSI is lower than the roaming trigger value Scan Period 5 The detection request period is 5s when the RSSI is lower than the roaming trigger value The monitor supports the following safe modes Menu Basic Algorithm Authentication Mode Encrypt...

Page 152: ...er certificate from the imported certificates PAC Certificate Select the PAC certificate from the imported certificates when EAP FAST is selected If the RADIUS server supports PAC preparation in the band and PAC is prepared for the customer it is not required to set the PAC certificate and password PAC password Enter the PAC password for the PAC certificate when EAP FAST is selected If the RADIUS ...

Page 153: ...monitoring system and check if the IP address can be obtained If the problem cannot be solved contact the IT department Static IP addresses conflict Check if the monitor displays a message about an IP address conflict If yes ensure that all network devices have unique IP addresses The network link fails Check if the center monitoring system can be pinged through after the PC or mobile phone is con...

Page 154: ...e is strong Remove obvious interference sources or adjust the WLAN deployment to meet the requirements of Mindray Signal coverage is insufficient in some areas Use the network survey tool to check the signal coverage If the signal coverage is insufficient in a certain area adjust the location of the AP or add APs All the monitors are disconnected intermittently The wired network is not configured ...

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