Shenzhen Mindray Bio-Medical Electronics MEC-1000 Service Manual
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Shenzhen Mindray Bio-Medical Electronics MEC-1000 Service Manual

Portable patient monitor
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MEC-1000
Portable
Patient Monitor
Service Manual

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Summary of Contents for Shenzhen Mindray Bio-Medical Electronics MEC-1000

  • Page 1 MEC-1000 Portable Patient Monitor Service Manual...
  • Page 3 MEC-1000 Statement SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD. (hereinafter called Mindray) owns all rights to this unpublished work and intends to maintain this work as confidential. Mindray may also seek to maintain this work as an unpublished copyright. This publication is to be used solely for the purposes of reference, operation, maintenance, or repair of Mindray equipment.
  • Page 4 Upon request, Mindray may provide, with compensation, necessary circuit diagrams, calibration illustration list and other information to help qualified technician to maintain and repair some parts, which Mindray may define as user serviceable. MEC-1000 Service Manual (V1.1)
  • Page 5 Mindray. ■ the MEC-1000 Patient Monitor is not used in accordance with the instructions for use, or the electrical installation of the relevant room does not comply with NFPA 70: National Electric Code or NFPA 99: Standard for Health Care Facilities (Outside the United States, the relevant room must comply with all electrical installation regulations mandated by the local and regional bodies of government).
  • Page 6 Park, Nanshan, Shenzhen, 518057, P. R. China Phone: +86 755 2658 2888 Fax: +86 755 2658 2680 EC Representative Name: Shanghai International Holding Corp. GmbH(Europe) Address: Eiffestrasse 80 D-20537 Hamburg Germany +49 40 2513174 Phone: Fax: +49 40 255726 MEC-1000 Service Manual (V1.1)
  • Page 7 Preface This service manual gives a detailed description of the MEC-1000 Patient Monitor, including circuit descriptions, test procedures and a spare part listing. This manual is intended as a guide for technically qualified personnel during repair, testing or calibration procedures.

  • Page 9: Table Of Contents

    Chapter 4 I Structure and Part List ................4-1 4.1MEC-1000 Explosive view ..................4-1 4.1.1 MEC-1000 Explosive view ..................4-1 4.1.2 MEC-1000 TFT Screen Assembly……………………………………..... 4-3 4.1.3 MEC-1000 Bracket Assembly ................4-5 4.1.4 Parameter Socket Assembly................. 4-7 4.1.5 Rear panel Assembly……………………………………........4-8 4.2 Use of Battery ......................

  • Page 11: Chapter 1 General

    , and TEMP. MEC-1000 can convert these physiological signals into digital signals, which can be further processed and used to judge whether to trigger alarm. The user can control the operation of MEC-1000 via using the buttons on the front panel.
  • Page 12 General the qualified medical personnel shall use MEC-1000 patient monitor. 1.3 Environmental Conditions 1.3.1 Temperature 0 - 40 °C Operating -20 - 60 °C Transportation and Storage 1.3.2 Humidity Working 15% ~ 95% Transport and Storage 10% ~ 95%（noncondensing） 1.3.3...

  • Page 13: Chapter 2 Principle

    AD conversion and digital processing system is used. Figure 2- 1 MEC-1000 structure and part relationship In terms of its functionality, MEC-1000 is made up of following parts: 1) Parameter measurement part 2) Main control part...
  • Page 14 AC mains is disconnected. A small fan requiring DC input is used to realize superior ventilation. 2.1.5 Other auxiliary part Network port is available on MEC-1000, which allows the service engineer to upgrade the system software without necessarily opening the enclosure of the monitor.And can be MEC-1000 Service Manual (V1.1)

  • Page 15: Main Control Part

    2.2.3.1 CPU System CPU is the core element on the main control Module. It connects peripheral modules through BUS and I/Os in order to finish data communication, data processing and logic control, etc. MEC-1000 Service Manual (V1.1)

  • Page 16: Parameter Part

    A/D and CPU in parameter part are shared for processing signals of the said five parameters, i.e., ECG, RESP, TEMP, NIBP and SPO2. Convert analog signals output from parameter circuit into digital signals, and send them MEC-1000 Service Manual (V1.1)
  • Page 17 This module uses ECG cables to collect ECG, RESP signals, process them and transmit them to the main control part through serial port. ECG Signal Input Circuit Input protection and filter circuit: receives ECG signals from cables, removes high-frequency MEC-1000 Service Manual (V1.1)
  • Page 18 Level translation circuit: removes DC components in RESP signals; Master AMP/Filter circuit: amplifies and filters RESP signals again and transmits them furthermore into A/D converter. A/D and CPU System (Description in frame of dashed lines) Refer to the 2.3.1 MEC-1000 Service Manual (V1.1)
  • Page 19 Receive the signal transmitted from TEMP sensor, amplify the signal and send it into A/D converter. A/D and CPU System (Description in frame of dashed lines) Refer to the 2.3.1 2.3.4 SPO2 Module 2.3.4.1 General This module is designed to measure SPO2. MEC-1000 Service Manual (V1.1)
  • Page 20 Convert digital signals output from CPU into analog signals, supply control signals to Led Drive Circuit and SPO2 Signal Process Circuit. A/D and CPU System (Description in frame of dashed lines) Refer to the 2.3.1 2.3.5 NIBP Module 2.3.5.1 General This module is designed to measure NIBP. MEC-1000 Service Manual (V1.1)
  • Page 21 A/D converter. Over Pressure Detect Detect NIBP pressure signals. Once the pressure exceeds the protection limit, it sends the message to CPU System, which will accordingly control the Valve Drive Circuit to open the MEC-1000 Service Manual (V1.1)

  • Page 22: Power Board

    If AC mains is disconnected, this circuit controls the battery to power the subsequent circuits. 5V DC/DC Convert the DC supply from the previous circuit into stable 5V DC supply to power other boards. 12V DC/DC 2-10 MEC-1000 Service Manual (V1.1)

  • Page 23: Keyboard

    Q5 when output is connected with rated load are square waves of about 120kHz frequency. Voltage wave of D16 is a square one of about 280kHz frequency. Keyboard 2.5.1 General This module acts as the man-machine interface. 2.5.2 Schematic Diagram Figure 2-9 Schematic Diagram of Keyboard MEC-1000 Service Manual (V1.1) 2-11...
  • Page 24 This module receives printing data from the main board. At the same time of converting the data into dot matrix data and sending them to the printer, it also drives the printer to start printing action. Step Motor Drive Circuit 2-12 MEC-1000 Service Manual (V1.1)
  • Page 25 Detect the status of the printer, including the position of paper platen, if there is paper, and temperature of thermal head and send the information to CPU System. CPU System Process printing data; Control printer and step motor; Collect printer status information and realize corresponding control; Communicate with main board. MEC-1000 Service Manual (V1.1) 2-13...

  • Page 27: Chapter 3 Product Specification

    Operating time under the normal condition 100 minutes (2 batteries) Operating time after the first alarm of low battery 5 ~ 15 minutes Maximum charging time of single battery is 4 hours. Maximum charging time of two batteries is 8 hours. MEC-1000 Service Manual (V1.1)
  • Page 28 1 hour, 1 or 5 second Resolution Long 72 hours, 1 minute Resolution Alarm Event Recall 60 alarm events of all parameters and 8/16/32seconds of corresponding waveform. NIBP Measurement Recall 400 NIBP measurement data Power-off Storage MEC-1000 Service Manual (V1.1)
  • Page 29 ARR Detecting Type ASYSTOLE, VFIB/VTAC, COUPLET, BIGEMINY, TRIGEMINY, R ON T, VT>2, PVC, TACHY, BRADY, MISSED BEATS, PNP, PNC Alarm Available Review Available 3.2.9 RESPARATION (RESP) Method Impedance between R-F (RA-LL) Measuring Impedance Range: 0.3 ~ 5.0Ω MEC-1000 Service Manual (V1.1)
  • Page 30 20 ~ 110 mmHg Resolution Pressure 1mmHg ± 3mmHg Static pressure accuracy Accuracy Pressure ±5mmHg Maximum Mean error Maximum Standard deviation 8mmHg Overpressure Protection Adult Mode 297±3 mmHg Pediatric Mode 240±3 mmHg Neonatal Mode 147±3 mmHg MEC-1000 Service Manual (V1.1)
  • Page 31 Measuring and Alarm Range 20 ~ 254bpm Resolution 1bpm ± 3bpm Accuracy Alarm Delay 3.2.12 TEMPERATURE (TEMP) Channel 0 ~ 50 °C Measuring and Alarm Range Resolution 0.1°C ± 0.1 °C Accuracy Actualization interval about 1 Sec. MEC-1000 Service Manual (V1.1)

  • Page 33: Chapter 4 I Structure And Part List

    Structure and Part List Structure and Part List Chaptr 4 4.1.1 MEC-1000 Explosive view Figure 4-1 Graphics, exploded M1K1-30-22368 Front panel assembly M04-004012--- Cross phoned screw with washer MEC-1000 Service Manual (V1.1)

  • Page 34: Mec-1000 Tft Screen Assembly

    Bracket Assembly M1K1-30-22305 Rear panel assembly TR6C-30-16657 TR6C-C recorder package M04-004014--- Cross phoned screw with washer M4x10 M04-004017--- Cross phoned screw with washer M3x12 Standard Code Name & SPEC. QTY. Material Remarks 4.1.2 MEC-1000 TFT Screen Assembly MEC-1000 Service Manual (V1.1)
  • Page 35 Structure and Part List Figure 4-2-1 MEC-1000 LG TFT screen assembly M04-051137--- Cross phoned screw GB 818-85 with washer M2x4 9300-20-13911 TFT support bar(LP104S5”LG”) 0010-10-12362 10.4’ LG TFT screen LY12 9300-20-13911 TFT support bar(LP104S5”LG”) T=1.5 M04-004012--- Hexagon Nut M3x6 9300-20-13901...

  • Page 36: Mec-1000 Bracket Assembly

    Structure and Part List LY12 9300-20-13766 Support of TFT screen T=1.5 0010-10-12096 INVERTOR ”TAMURA” 9300-20-13901 Isolation panel M90-000002-01 Isolation Washer Standard Code QTY. Material Remarks Name & Specification 4.1.3 MEC-1000 Bracket Assembly MEC-1000 Service Manual (V1.1)
  • Page 37 Structure and Part List Figure 4-3 MEC-1000 bracket assembly M04-004012--- Cross phoned screw with washer M3x6 8100-30-14117 NIBP Pump assembly 9200-30-10489 Power board 9200-20-10515 Isolation panel of Power board 9303-30-21803 Socket panel Assembly 9200-20-10689 Recorder Adjust Board 9200-20-10485 Printer Install Board...

  • Page 38: Parameter Socket Assembly

    Structure and Part List 4.1.4 Parameter Socket Assembly Figure 4-4 Parameter socket assembly MEC-1000 Service Manual (V1.1)

  • Page 39: Rear Panel Assembly

    Fixing board for the NIBP Module M04-011002--- M3 Nut 9200-20-10491 Back board of the probe socket 9303-21-21812 ECG signal Cable Standard Code Name & SPEC. QTY. Material Remarks 4.1.5 Rear Panel Assembly Figure 4-5 Rear panel assembly MEC-1000 Service Manual (V1.1)

  • Page 40: Use Of Battery

    Screw GB845-85 M3x6 9200-30-10522 FAN assembly 9200-20-10620 Press panel of Speaker 9200-21-10633 2.25” Speaker with Cable 9200-20-10511 Rubber foot 1 Standard Code Name & SPEC. QTY. Material Remarks Use of Battery 4.2.1 Assembly/disassembly Figure 4-6 Assembly/disassembly of battery MEC-1000 Service Manual (V1.1)

  • Page 41: Part List

    (4) To extend the lifespan o the battery, it is recommended to use it at least once monthly. Besides, the battery shall be charged after its capacity is completely exhausted. Part list Part List of MEC-1000 Material No. Name 0010-20-11954...
  • Page 42 Structure and Part List M05-100R29--- CR2032 button battery 3V lithium 9300-30-13793 Au TFT screen assembly M1K1-30-22355 or LG TFT screen assembly 0010-10-12096 INVERTOR M1K1-30-22368 Front panel assembly Speaker 9200-21-10633 900E-20-04855 Rear panel 9000-10-07294 Accumulator 9210-30-30152 Network board MEC-1000 4-10 Service Manual (V1.1)

  • Page 43: Chapter 5 Tests

    Chapter 5 Tests Test Procedure 5.1.1 Connection and Inspection Connect the simulator, power supply and fixture onto MEC-1000 monitor; turn on the power. TFT shall display startup picture and then the system screen. 5.1.2 Inspecting Key Functions Press every key on the keypad. The system shall execute the corresponding function as instructed in the operation manual.
  • Page 44 2. Press “ESC” and “↓” keys on the simulator to enter NEONATE mode. Set the blood pressure to the grade of 120/80/90 mmHg and heart rate to 120BPM. Also set MEC-1000 to PEDIATRIC mode. Press “START” key, the system will give calculating result about 30 seconds later.

  • Page 45: Nibp Calibrating Method

    The maximum error between any pressure point in the NIBP measurement range of monitor and the value of pressure calibrator shall not exceed ±3mmHg(±0.4kPa). 5.3 Safety tests ® Testing device: BIO-TEK 601PRO safety analyzer Applied standard: IEC60601-1 Inspection items and methods 5.3.1 Protective Earth Resistance Test MEC-1000 Service Manual (V1.1)
  • Page 46 Earth open and null line L2 open Test results must comply with: a: Earth open, the leakage current is less than 500μA; b: Earth open and null line L2 open, leakage current is less than 1000μA. MEC-1000 Service Manual (V1.1)
  • Page 47 ○ ○ Enclosure Red terminal Conductor ○ ○ AP terminals Micorammeter Note: Switches S1, S2, S3 and S5 are variable, S4 is closed. Figure 5-4 Enclosure Leakage Current Test 5.3.4 Patient Leakage Current Test 5.3.4.1 Connection: MEC-1000 Service Manual (V1.1)
  • Page 48 ○ S2 ○ ○ ○ ○ ● ○ ○ ○ Earth ○ ○ AP terminals Enclosure Conductor ○ Microammeter Note: Switches S1, S2, S3 and S5 are variable, S4 is closed. Figure 5-5 Patient Leakage Current Test MEC-1000 Service Manual (V1.1)

  • Page 49: Chapter 6 Maintenance And Cleaning

    Turn off the power and disconnect the line power before cleaning the monitor or the sensor/probe. The MEC-1000 Multi-Parameter Patient Monitor must be kept dust-free. It is recommended that you should clean the outside surface of the monitor enclosure and the display screen regularly.
  • Page 50 Hospital Maintenance Schedule. Disinfection facilities should be cleaned first. Appropriate disinfection materials for ECG lead, SpO sensor, blood pressure cuff and TEMP probe are introduced in relevant chapters of MEC-1000 operation manual. MEC-1000 Service Manual (V1.1)

  • Page 51: Chapter 7 Troubleshooting

    1) Check if foreign objects are attached to the paper bail of the recorder; 2) Check if foreign objects are attached to the gears of the thermal head of the recorder; 3) Check if the power voltage of the recorder is >7.8V. MEC-1000 Service Manual (V1.1)
  • Page 52 Check the current situation of the Patient suffers from Arr. of "COUPLET" patient. Check the connection of COUPLET. the electrodes and lead wires. "TACHY" Patient suffers from TACHY. Check the current situation of the MEC-1000 Service Manual (V1.1)
  • Page 53 SPO2 sensor Check the connection of SpO2 "SEARCH PULSE" connected correctly or the sensor. Check the current situation patient arm moves. of the patient. "TEMP SENSOR OFF" TEMP sensor not Check the connection of TEMP MEC-1000 Service Manual (V1.1)
  • Page 54 The system has serious Re-start up the system. If the error. failure still exists, contact the "SYSTEM SOFTWARE ERR" manufacturer. "SYSTEM CMOS FULL" "SYSTEM CMOS ERR" "SYSTEM EPGA FAILURE" "SYSTEM FAILURE2" "SYSTEM FAILURE3" "SYSTEM FAILURE4" "SYSTEM FAILURE5" "SYSTEM FAILURE6" MEC-1000 Service Manual (V1.1)
  • Page 55 If the failure still exists, contact the manufacturer for repair. Press down the recorder handle for "REC HEAD WRONG The handle for pressing the pressing the paper. POSITION" paper is not pressed down. MEC-1000 Service Manual (V1.1)
  • Page 56 Problem happens when Check the connection of each part "AIR PRESSURE ERROR" measuring the curve. The or replace with a new cuff. If the system cannot perform failure still exists, contact the MEC-1000 Service Manual (V1.1)
  • Page 57 If the "PNEUMATIC LEAK" NIBP airway has leaks. failure still exists, contact the manufacturer for repair. Problem happens when Check the connection of each part "MEASURE FAIL" measuring the curve. The and the patient situation. Measure MEC-1000 Service Manual (V1.1)
  • Page 58 Check the connection of each part measuring the curve. The and the patient situation. Measure "NIBP SYSTEM FAILURE" system cannot perform again, if the failure still exists, measurement, analysis or contact manufacturer calculation. repair. MEC-1000 Service Manual (V1.1)

  • Page 59: Chapter 8 Maintenance Menu

    8.1.3 Select TEMP probe type Enter FATORY MAINTAIN menu, then select the right type between CY-F1 type and YSI type. 8.2 Factory Maintain 8.3 Password 1. user key: MINDRAY 2. Factory key: 332888 3. DEMO key: 2088 MEC-1000 Service Manual (V1.1)
  • Page 61 P/N: M1K1-20-22310...

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