Schiller Argus VCM Service manual

Download

ARGUS VCM

Vital Compact Monitor

Art. No.: 2.540041 Rev. a *2.540041*

Service Handbook

Contents

Figures Tables

Notice

This document contains proprietary information that is protected by copyright. All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

Warranty

The information contained in this document is subject to change without notice. Schiller makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose. Schiller shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

Revision History

The documentation part number and revision number indicate its current edition. The revision number changes when a new edition is printed in accordance with the revision history of the documentation. Minor corrections and updates which are incorporated at reprint do not cause the revision number to change. The document part number changes when extensive technical changes are incorporated.

ARGUS VCM Service Manual i

Contents

ARGUS VCM

Introduction 1

Manual Overview ............................................................................................................................................ 3

Related Documents.......................................................................................................................................... 3

Description of the ARGUS VCM monitor .................................................................................................... 3

Specifications 7

Physical.............................................................................................................................................................. 7

Electrical ............................................................................................................................................................ 7

Environmental.................................................................................................................................................. 7

Measurement Parameters ...............................................................................................................................8

Compliance .....................................................................................................................................................10

Routine Maintenance 11

Cleaning ..........................................................................................................................................................11

Periodic Safety and Functional Checks....................................................................................................... 11

Functional Checks.......................................................................................................................................... 12

Batteries........................................................................................................................................................... 12

Environmental Protection............................................................................................................................. 12

Performance Verification 13

Introduction .................................................................................................................................................... 13

Equipment Needed........................................................................................................................................ 13

Performance Tests ..........................................................................................................................................14

Safety Tests...................................................................................................................................................... 21

Service Mode and Demo Mode 25

Introduction .................................................................................................................................................... 25

Service Mode ..................................................................................................................................................25

Demo Mode ....................................................................................................................................................31

Firmware download 33

Introduction .................................................................................................................................................... 33

Equipment Needed........................................................................................................................................ 33

How to Download .........................................................................................................................................33

Troubleshooting 35

Introduction .................................................................................................................................................... 35

How to Use This Section ...............................................................................................................................35

Who Should Perform Repairs.......................................................................................................................35

Replacement Level Supported ..................................................................................................................... 35

Troubleshooting Guide.................................................................................................................................. 36

Disassembly Guide 43

General ............................................................................................................................................................43

Replacement Level Supported ..................................................................................................................... 44

Prior to Disassembly...................................................................................................................................... 45

Fuse Replacement ..........................................................................................................................................45

Battery Replacement...................................................................................................................................... 45

Monitor Disassembly..................................................................................................................................... 46

Spare Parts 57

Introduction .................................................................................................................................................... 57

Obtaining Replacement Parts....................................................................................................................... 57

Parts List.......................................................................................................................................................... 58

ii ARGUS VCM Service Manual

ARGUS VCM

Contents

Packing For Shipment 61

General Instructions ......................................................................................................................................61

Returning the ARGUS VCM......................................................................................................................... 61

Repacking In Original Carton ...................................................................................................................... 61

Repacking In a Different Carton.................................................................................................................. 62

System Processing Description 63

System Overview ...........................................................................................................................................63

NIBP Processing............................................................................................................................................. 66

SpO2 Processing............................................................................................................................................. 68

Temperature Processing ................................................................................................................................ 70

ARGUS VCM Service Manual iii

Contents

ARGUS VCM

Figures

Figure 1. ARGUS VCM Front Panel............................................................................................................................................... 4

Figure 2. ARGUS VCM Rear Panel................................................................................................................................................ 5

Figure 3. ARGUS VCM Left Side Panel.......................................................................................................................................... 6

Figure 4. ARGUS VCM Right Side Panel....................................................................................................................................... 6

Figure 5. System Version............................................................................................................................................................... 25

Figure 6. Battery Voltage Level..................................................................................................................................................... 26

Figure 7. NIBP Inflation Cycle ..................................................................................................................................................... 26

Figure 8. Total Runtime ................................................................................................................................................................ 27

Figure 9. Factory Defaults Reset .................................................................................................................................................. 27

Figure 10. Night Panel ................................................................................................................................................................. 29

Figure 11. NIBP Calibration......................................................................................................................................................... 29

Figure 12. NIBP Pressure Test...................................................................................................................................................... 30

Figure 13. Sound Calibration ....................................................................................................................................................... 30

Figure 14. Demo Mode Display.................................................................................................................................................... 31

Figure 15. Disassembly Sequence Flow Chart............................................................................................................................. 44

Figure 16. Battery Disassembly.................................................................................................................................................... 45

Figure 17. Monitor Disassembly................................................................................................................................................... 46

Figure 18. Front Case Disassembly.............................................................................................................................................. 47

Figure 19. Main BD, SpO2, FND modules Disassembly .............................................................................................................. 48

Figure 20. Front Case Disassembly – Overlay, NIBP cuff hose connector................................................................................... 49

Figure 21. Rear Case Disassembly- Battery, SMPS...................................................................................................................... 50

Figure 22. Rear Case Disassembly- NIBP module ....................................................................................................................... 51

Figure 23. Rear Case Disassembly- Printer ................................................................................................................................. 52

Figure 24. Rear Case Disassembly – Speaker, Handle, etc........................................................................................................... 53

Figure 25. Temperature Case Disassembly – Temperature Module.............................................................................................. 54

Figure 26. Temperature Case Disassembly ................................................................................................................................... 55

Figure 27. ARGUS VCM Exploded View ...................................................................................................................................... 56

Figure 28. ARGUS VCM Exploded View – Spare Parts................................................................................................................ 58

Figure 29. ARGUS VCM System Block Diagram.......................................................................................................................... 63

Tables

Table 1. Required Test Equipments ............................................................................................................................................... 13

Table 2. Earth Leakage Current Values ........................................................................................................................................ 21

Table 3. Enclosure Leakage Current............................................................................................................................................. 22

Table 4. Patient Leakage Current Values ...................................................................................................................................... 22

Table 5. Patient Leakage Current Values—Mains Voltage on Applied Part.................................................................................. 23

Table 6. Test Lead Combinations .................................................................................................................................................. 24

Table 7. Allowable Leakage Current............................................................................................................................................. 24

Table 8. Factory Default Settings for ARGUS VCM..................................................................................................................... 28

Table 9. Required Equipments for Firmware download................................................................................................................ 33

Table 10. Technical Error Codes................................................................................................................................................... 42

Table 11. Part Descriptions – Monitor Assembly.......................................................................................................................... 46

Table 12. Part Descriptions – Front Case Assembly..................................................................................................................... 47

Table 13. Part Descriptions – Main BD, SpO2, FND Modules Assembly..................................................................................... 48

Table 14. Part Descriptions – Overlay, NIBP Cuff Hose Connector............................................................................................. 49

Table 15. Part Descriptions – Battery, SMPS Assembly ............................................................................................................... 50

Table 16. Part Descriptions – NIBP Module Assembly................................................................................................................. 51

Table 17. Part Descriptions – Printer Assembly........................................................................................................................... 52

Table 18. Part Descriptions – Speaker, Handle, etc Assembly...................................................................................................... 53

Table 19. Part Descriptions – Temperature Module Assembly...................................................................................................... 54

Table 20. Part Descriptions – Temperature Case Assembly.......................................................................................................... 55

Table 21. ARGUS VCM Parts List ................................................................................................................................................ 59

iv ARGUS VCM Service Manual

Introduction

Manual Overview Related Documents Description of the ARGUS VCM monitor

Warnings

Warnings are identified by the WARNING symbol shown above.

Warnings alert the user to potential serious outcomes (death, injury, or adverse events) to the patient or user.

WARNING: Explosion hazard. Do not use ARGUS VCM in the presence of flammable anesthetics or gases.

WARNING: Do not spray, pour, or spill any liquid on ARGUS VCM, its accessories, connectors, switches, or openings in the chassis.

WARNING: Do not immerse ARGUS VCM or its accessories in liquid or clean with caustic or abrasive cleaners.

WARNING: Ensure that conductive portions of the cables do not come into contact with any other conductive parts.

WARNING: Electrical shock hazard. Disconnect the power cord from ARGUS VCM before attempting to open or disassemble ARGUS VCM.

WARNING: The use of accessories, transducers and cables other than those specified may result in increased emission and/or decreased immunity of ARGUS VCM monitor.

WARNING: Do not silence ARGUS VCM audible alarm or decrease its volume if patient safety could be compromised.

WARNING: During safety tests, AC mains voltage will be present on the applied part terminals. Exercise caution to avoid electrical shock hazard.

WARNING: Do not place ARGUS VCM into operation after repair or maintenance until Performance, Safety Tests and NIBP Calibration listed in this service manual have been performed. Failure of these tests could result in erroneous readings.

ARGUS VCM Service Manual 1

Introduction

Cautions

ARGUS VCM

Cautions are identified by the Caution symbol shown above.

Cautions alert the user to exercise care necessary for the safe and effective use of ARGUS VCM monitor.

CAUTION: Observe ESD (electrostatic discharge) precautions when working within the unit and/or when disassembling and reassembling ARGUS VCM monitor and when handling any of the components of ARGUS VCM monitor.

CAUTION: When reassembling ARGUS VCM, over-tightening could strip out the screw holes in the cases, rendering it unusable.

CAUTION: If any problem with ARGUS VCM built in an optional printer, check a printer’s door is closed well. Operating error may be caused if the cover is not closed correctly.

CAUTION: If internal battery cable has been disconnected, pay particular attention to polarity of the cable before reattaching. If battery cable polarity is reversed, it is likely that circuit damage will occur.

CAUTION: Ferrite Cores are used for electromagnetic compatibility. Please do not remove Ferrite Cores while disassembling or reassembling, otherwise the monitor can be affected by electromagnetic interference and measure inaccurate data to be displayed or stored.

2 ARGUS VCM Service Manual

ARGUS VCM

Manual Overview

This manual contains information for servicing The monitor subsequently referred to as qualified service personnel should service this product. Before servicing read the operator’s manual carefully for a thorough understanding of safe operation.

Read and understand all safety warnings and service notes printed in this service manual and the operator’s manual.

This manual contains information about ARGUS VCM monitor. ARGUS VCM monitor includes the following configuration:

Config. Features Config. Features

N Standard (NIBP + Pulse Rate) NP Standard + Printer

NS Standard + SpO2 NSP Standard + SpO2 + Printer

NT Standard + Temperature NTP Standard + Temperature+ Printer

NST Standard + SpO2 + Temperature NSTP Standard + SpO2 + Temperature + Printer

All information in this manual, including the illustrations, is based on the monitor configured with Temperature, SpO of these options, some information in this manual does not apply.

2 and Printer options. If your monitor lacks any

Related Documents

To perform test and troubleshooting procedures and to understand the principles of operation and circuit analysis sections of this manual, you must know how to operate the monitor. Refer to To understand the various blood pressure cuffs, SpO that work with the monitor, refer to the individual directions for use that accompany these accessories.

ARGUS VCM operator’s manual.

Description of the ARGUS VCM monitor

The purpose and function of Schiller blood pressure (systolic, diastolic, and mean arterial pressures), functional arterial oxygen saturation, pulse rate, and temperature for adult, pediatric and neonate patients in all hospital areas and hospital-type facilities. It may be used during hospital transport and in mobile, land-based environments, such as ambulances, within the specification of the environmental characteristics. Monitor users should be skilled at the level of qualified health care professionals, such as a technician, doctor, nurse or medical specialist.

Note: Hospital use typically covers such areas as general care floors, operating rooms, special procedure areas, intensive and critical care areas, within the hospital plus hospital-type facilities. Hospital-type facilities include physician office based facilities, sleep labs, skilled nursing facilities, surgicenters, and sub-acutecenters.

Note: Intra-hospital transport includes transport of a patient within the hospital or hospital-type facility.

ARGUS VCM monitor is to monitor noninvasive

Introduction

ARGUS VCM monitor.

ARGUS VCM throughout this manual. Only

ARGUS VCM,

2 sensors and temperature probes

ARGUS VCM Service Manual 3

Introduction

ARGUS VCM

The physical and operational characteristics of the monitor are described in the operator’s manual and in the Specification section of this manual.

Figure 1 and 2 identify the displays, controls, indicators and symbols of the front and rear panels.

27 26

2 4

8 9 10 11 12 13 14 15 16 1718 19 20

1. Blood Pressure Unit Indicators 15. %SpO

2 Display

2. Systolic Blood Pressure Display 16. Mode Button

3. Patient Type Indicators 17. Pulse Amplitude Indicator

4. Diastolic Blood Pressure Display 18. Alarm Silence Indicator

5. Pulse Rate Display 19. Up/Down Selection Button

6. MAP (Mean Arterial Pressure) Display 20. Alarm Silence Button

7. Print Setting Indicators 21. BP start/stop button

8. Print Button 22. Temperature Unit/Mode Indicators

9. Alarm Button 23. Temperature Display

10. Auto Indicator 24. Power Button

11. Auto Cycle Display 25. Battery Indicator

12. Auto Button 26. Charging/AC in Indicator

13. Pulse Tone/Alarm Volume Setting Indicators 27. Time Display

14. Review Button 28. Review Indicator

Figure 1. ARGUS VCM Front Panel

4 ARGUS VCM Service Manual

ARGUS VCM

Introduction

AC IN

100-240V~,

50/60 Hz

28-38VA

3 4 5 6

1. Handle 4. Equipotential (Ground)

2. Air Ventilator 5. Battery Cover (Replacement)

3. AC Power Connector 6. RS-232 Data Interface

Figure 2. ARGUS VCM Rear Panel

ARGUS VCM Service Manual 5

Introduction

ARGUS VCM

1. Printer 3. NIBP hose connector

2 sensor/cable connector

2. SpO

Figure 3. ARGUS VCM Left Side Panel

1. Temperature probe 3. Probe holder

2. Probe cover 4. Temperature probe connector

Figure 4. ARGUS VCM Right Side Panel

6 ARGUS VCM Service Manual

Specification

Physical Electrical Environmental Measurement Parameters Compliance

Physical

Electrical

Instrument

Dimensions 130×180×278 (mm)

Weight 2.7 (kg)

AC Power

Power 100Vac to 240Vac, 50 Hz/60 Hz, 28 to 38 VA

Environmental

Battery

Type Lead acid

Voltage/Capacity 6 V/ 4 Ampere-Hours

Recharge 12 hours with ARGUS VCM

Shelf Life 2 months, new fully charged battery

Complies with 91/157/EEC

Operation

Temperature 10 °C (50 °F) to 40 °C (104 °F)

Exemption: thermometry module – operating temperature 16 °C (60 °F) to 40 °C (104 °F)

Humidity 15 % RH to 95% RH, non-condensing

Altitude 170 m (557 ft) below sea level

4,877 m (16,000 ft) above sea level

Transport and Storage

Temperature –20 °C (-4 °F) to 50 °C (122 °F)

Humidity 15 % RH to 95% RH, non-condensing

Altitude –610 m (–2,000 ft) below sea level

12,192 m (40,000 ft) above sea level

Note: The system may not meet its performance specifications if stored or used outside the

manufacturer’s specified temperature and humidity range.

ARGUS VCM Service Manual 7

Specification

Measurement Parameters

NIBP

Pulse Rate Range Adult/Pediatric/Neonatal 30 BPM to 220 BPM

Pulse Rate Accuracy ±3 BPM or ±3%, whichever is greater

Technique Oscillometric Measurement

Measurement modes AUTO, MANUAL and STAT

AUTO Mode Automatic NIBP measurements at intervals of 1, 2, 3, 4, 5, 10, 15,

MANUAL Mode Single measurement initiated by NIBP Start/Stop switch

STAT Mode Series of consecutive measurements for 5 minutes

NIBP pressure measurement range

Systolic pressure range

Diastolic pressure range

Mean pressure range

Pressure Display Accuracy Meets ANSI/AAMI SP10:1992+A1:1996

ARGUS VCM

Pulse Rate

NIBP (Non-Invasive Blood Pressure)

30, 45, 60, 90, 120, and 240 minutes

Adult: 30 mmHg to 260 mmHg (3.9 kPa to 34.5 kPa)

Pediatric: 30 mmHg to 160 mmHg (3.9 kPa to 21.2 kPa)

Neonatal: 25 mmHg to 120 mmHg (3.3 kPa to 15.9 kPa)

Adult: 20 mmHg to 235 mmHg (2.6 kPa to 31.2 kPa)

Pediatric: 15 mmHg to 130 mmHg (1.9 kPa to 17.2 kPa)

Neonatal: 10 mmHg to 105 mmHg (1.3 kPa to 13.9 kPa)

Adult: 20 mmHg to 255 mmHg (2.6 kPa to 33.9 kPa)

Pediatric: 15 mmHg to 140 mmHg (1.9 kPa to 18.6 kPa)

Neonatal: 10 mmHg to 110 mmHg (1.3 kPa to 14.6 kPa)

Cuff Pressure Range 0 to 300 mmHg (0 to 40 kPa)

Initial Cuff Inflation

Overpressure protector

Standards ANSI/AAMI SP10:1992+A1:1996, IEC60601-2-30:1999

Note: Systolic and diastolic blood pressure measurements determined with this device are equivalent to those obtained by a trained observer using the cuff/stethoscope auscultation method, within the limits prescribed by the American National Standard, Electronic or automated sphygmomanometers.

Adult: 100, 120, 140, 160(Default), 180, 200, 220, 240, 270 mmHg

(13.3, 15.9, 18.6, 21.2(default), 23.9, 26.6, 29.2, 31.9, 35.9 kPa)

Pediatric: 80, 90, 100, 110, 120(default), 130, 140, 150, 160, 170 mmHg

(10.6, 11.9, 13.3, 14.6, 15.9(default), 17.2, 18.6, 19.9, 21.2, 22.6 kPa)

Neonatal: 50, 60, 70, 80, 90(default), 100, 110, 120, 132 mmHg

(6.6, 7.9, 9.3, 10.6, 11.9(default), 13.3, 14.6, 15.9, 17.5 kPa)

Adult 280 mmHg (N.C.), 308 mmHg (S.F.C.)

Pediatric 220 mmHg Neonatal 154 mmHg

EN1060-1:1995 and EN1060-3:1997.

8 ARGUS VCM Service Manual

ARGUS VCM

SpO2/Pulse Rate

Specification

%Saturation

Range 1% to 100%

Low Perfusion 0.03% to 20%

Accuracy Without Motion-Adults 70% to 100% ±2 digits

1% to 69% unspecified

Without Motion-Neonate1 70% to 100% ±3 digits

1% to 69% unspecified

Low Perfusion

Range 20 BPM to 300 BPM

Accuracy Without Motion2 20 BPM to 300 BPM ±3 digits

Low Perfusion

70% to 100% ±2 digits

1% to 69% unspecified

Pulse Rate

20 BPM to 300 BPM ±3 digits

Temperature

Printer

Standards EN865:1997

Neonate specifications are shown for neonate sensors with ARGUS VCM. Saturation accuracy will vary by sensor type recommended by the manufacturer..

Specification applies to monitor performance and was validated with Biotek and Nellcor simulators

Probe Type Thermistor probe

Range 26° C to 43° C (80° F to 110°F)

Display Accuracy ±0.1° C (±0.2° F)

Measurement units ° C, ° F

Measurement modes Predictive, Monitored

Predictive Mode One-time measurement in a single temperature reading which

is displayed at the end of the brief measurement period

Monitored Mode Continuous measurement over an indefinite period.

Standards ASTM E1112-00, EN12470-3

Typ e Thermal

Resolution 8 (dots/mm)

Printing speed 45 (mm/s)

Paper width 57 (mm)

ARGUS VCM Service Manual 9

Specification

Compliance

ARGUS VCM

Item Compliant with

Classification Class I (on AC power) Internally powered (on battery power)

Type of protection

General Safety IEC60601-1:1998+A1:1991+A2:1995

Alarms IEC60601-1-8:2001 Draft

Non-invasive blood pressure

Oxygen saturation

Type BF – Applied part

General requirements for Safety and Essential Performance

Alarm systems requirements, tests and guidances in medical electrical equipments systems

AAMI SP10:1992+A1:1996

Electronic or Automated Sphygmomanometers

EN1060-1:1995 Non-invasive sphygmomanometers

EN1060-3:1997

Supplementary requirements for electrical-mechanical blood pressure measuring systems

IEC60601-2-30:1999

Particular requirements for the Safety, including essential performance, of automatic cycling indirect blood pressure monitoring equipment

EN865:1997 Pulse oximeters, Particular requirements

Temperature monitoring

Electromagnetic Compatibility

Labeling EN1041:1998

Marking IEC 60878, EN 980, ISO 7000, EN 60417-1, EN 60417-2

E1112-00

Electronic thermometer for intermittent determination of patient temperature

EN12470-3:2000

Performance of compact electrical thermometers (non-predictive and predictive) with maximum device

IEC 60601-1, sub clause 36, IEC/

IEC60601-1-2:2001

Electromagnetic compatibility-requirements & test

Information supplied by the manufacturer with medical devices

10 ARGUS VCM Service Manual

Routine Maintenance

Cleaning Periodic Safety and Functional Checks Functional Checks Batteries Environmental Protection

WARNING: Do not spray or pour any liquid on the monitor or its accessories. Do not immerse ARGUS VCM or its accessories in liquid or clean with caustic or abrasive cleaners.

Cleaning

To clean ARGUS VCM, dampen a cloth with a commercial, nonabrasive cleaner and wipe the exterior surfaces lightly.

CAUTION: Do not allow any liquids to come in contact with the power connector or switches or to penetrate connectors or openings in the instrument.

Note: For cuffs, sensors and probes, follow the cleaning instructions in the directions

for use that accompany these accessories.

Note: If liquid is spilled on the monitor, clean and dry thoroughly before reuse.

Note: If in doubt about the monitor safety, refer the unit to qualified service personnel.

For surface-cleaning, follow your institution’s procedures or:

 ARGUS VCM may be surface-cleaned by using a soft cloth dampened with

either a commercial or nonabrasive cleaner, and lightly wiping the top, bottom, and front surfaces of the monitor lightly.

Periodic Safety and Functional Checks

ARGUS VCM requires no routine service or calibration other than cleaning and battery

maintenance. The following performance verification tests may be used following repair or during routine maintenance (if required by your local institution).

1. Inspect the exterior of

2. Inspect labels for legibility. If the labels are not legible, contact Schiller Technical Services Department.

3. Verify that the unit performs properly as described in Performance Verification

section.

4. Perform the electrical safety tests detailed in Performance Verification section. If the

unit fails these electrical safety tests, do not attempt to repair. Contact Schiller Technical Services Department.

ARGUS VCM for damage.

ARGUS VCM Service Manual 11

Routine Maintenance

Functional Checks

The following checks should be performed at least every 2 years by a qualified service technician.

1. If the monitor has been visibly damaged or subjected to mechanical shock (for

example, if dropped), perform the performance tests as described in Performance Verification section.

2. Perform the electrical safety tests as described in Safety Tests section. If the unit fails these electrical safety tests, refer to Troubleshooting section.

3. Inspect the fuses for proper value and rating

- qty 2, 2.0 A, 250 volts for AC mains (L/N: F1, F2)

- qty 1, 6.3 A, 250 volts for internal battery (L/N: F3)

Batteries

If ARGUS VCM has not been used for a long period of time, more than 2 months, the battery will need charging. To charge the battery, connect as described in Performance Verification section of this service manual or the Battery Operation section of the operator’s manual.

Schiller recommends replacing the instrument’s battery every 2 years. When

VCM

is going to be stored for 2 months or more, it is recommended to remove the

battery prior to storage. To replace or remove the battery, refer to Disassembly Guide.

Note: Storing

the battery capacity. The battery may require a full charge/discharge cycle to restore normal capacity. A full charge of a dead battery takes approximately 12 hours while the monitor is turned off. Schiller recommends that sealed, lead acid batteries be replaced at 2-year intervals. Refer to Disassembly

Guide Section.

CAUTION: If ARGUS VCM is to be stored for a period of 2 months or longer, it is

recommended to notify service personnel to remove the battery from the monitor prior to storage. Recharging the battery is strongly recommended when the battery has not been recharged for 2 or more months.

CAUTION: If the battery shows any signs of damage, leakage, or cracking, it must be replaced immediately.

CAUTION: Discarded battery may explode during incineration. Recycle used batteries properly. Do not dispose of batteries in refuse containers.

ARGUS VCM for a long period without charging the battery may degrade

Environmental Protection

Follow local governing ordinances and recycling plans regarding disposal or recycling batteries and other device components.

ARGUS VCM

ARGUS VCM to an AC outlet

ARGUS

ARGUS VCM’s

12 ARGUS VCM Service Manual

Performance Verification

Introduction Equipment Needed Performance Tests Safety Tests

Introduction

This section discusses the tests used to verify performance following repairs or during routine maintenance. All tests can be performed without removing All tests except battery charge and battery performance tests must be performed as the last operation before the monitor is returned to the user. If

ARGUS VCM fails to perform as specified in any test, repairs must be made to correct

the problem before the monitor is returned to the user.

Equipment Needed

Table 1 lists the equipment required for performance verification.

Table 1. Required Test Equipments

ARGUS VCM covers.

Equipment Description

Digital Multi Meter (DMM) Fluke Model 87 or Equivalent

NIBP Cuff Durable, Adult 11cm

NIBP Cuff Durable, Neonatal 5cm

NIBP Hose Adult, 8 feet

NIBP Hose Neonatal, 6 feet

NIBP Rigid PVC Vessel 9cm diameter

NIBP Rigid PVC Vessel 5cm diameter

SpO2 Sensor Extension Cable DOC-10

Temperature Probe Oral Probe

NIBP Simulator Bio-Tek BP Pump 2 or Equivalent

SpO2 Simulator NELLCOR SRC-MAX

Temperature Simulator WelchAllyn 9600 Calibration Tester

Safety Analyzer METRON QA-90 or Equivalent

Stopwatch Manual or electronic

ARGUS VCM Service Manual 13

Performance Verification

Performance Tests

The battery charge and battery performance test should be performed before the monitor repairs whenever the battery is suspected as being a source of the problems. All other tests may be used following repairs or during routine maintenance (if required by your local institution). Before performing the battery performance test, ensure that the battery is fully charged. This section is written using factory defaults set as power-up. If your institution has preconfigured custom defaults, those values will be displayed.

Power

1. Connect the monitor to AC power source using proper power cord.

2. Verify Charging/AC in indicator is lit (or flashing).

3. Press Power button over 1 second, and then verify that the monitor is turned on.

4. After the monitor operates in normal mode, disconnect the power cord.

5. Verify Battery indicator is lit instead of Charging/AC in indicator.

6. Press Power button over 1 second, and then verify that the monitor is turned off.

Battery Charge

1. Connect the monitor to AC power source using proper power cord. (the monitor is turned off)

2. Verify Charging/AC in indicator is lit (or flashing).

ARGUS VCM

Note: If Charging/AC in indicator is flashing, the battery needs fully charging.

3. Charge the battery fully until Charging/AC in indicator is no more flashing. It takes for at least 12 hours.

4. To check for a full charge, disconnect the power cord. Press Power button and the NIBP start/stop button simultaneously over 1 second to enter the Service mode. Then select battery voltage level displayed.

5. Verify that current battery voltage display in Service mode indicates ‘6.0V’ or greater.

Note: The battery may require a complete charge/discharge cycle to restore its normal capacity, depending on its previous usage.

Battery Discharge

1. Disconnect the power cord from the monitor with fully charged battery.

2. Turn on the monitor by pressing Power button over 1 second.

3. Connect NIBP simulator to the monitor. Set NIBP simulator:

SYS of 120mmHg, DIA of 80mmHg, PR of 80 bpm.

4. Set NIBP Auto interval of the monitor to 15 minutes.

5. After more than 2 hours of the monitor operating, verify an audible alarm is sounding

and the battery level of the monitor is under 5.4V.

6. Allow the monitor to operate until it automatically powers down due to low battery

condition. Verify that high priority alarm occurs 5 seconds before the monitor automatically shuts down.

7. If the monitor passes this test, immediately recharge battery.

14 ARGUS VCM Service Manual

ARGUS VCM

Performance Verification

Power-On Self-Test

1. Connect the monitor to AC power source and verify Charging/AC in indicator is lit.

2. Observe the monitor front panel. With the monitor off, press Power button. The

Note: Power-on self-test takes approximately 7 seconds to complete.

Note: If an error code is displayed, please refer to Troubleshooting section.

monitor must perform the following sequence.

a. All FNDs and indicators are illuminated.

b. Power-on beeps sounds consecutively.

c. Upon successful completion of power-on self-test, the display will enter the

normal mode.

General Operation Tests

Alarms and Alarm Silence

1. Connect the monitor to an AC power source.

2. Press the monitor Power button to turn the monitor on.

3. Connect NIBP simulator to the monitor.

4. Set NIBP simulator as follows: Systolic of 120mmHg, Diastolic of 80mmHg and pulse rate of 150 bpm.

5. Press NIBP start/stop button.

6. Verify following the monitor reaction after measurement completes:

a. The monitor displays NIBP and pulse rate as specified by the simulator.

b. Audible alarm sounds and Pulse rate display flashes indicating the parameter

has violated default alarm limits.

7. Press Alarm silence button on the front panel of the monitor.

8. Verify the following:

a. An audible alarm is temporarily silenced. b. Pulse rate display continues flashing. c. Alarm silence indicator is lit. d. Audible alarm returns in approximately 90 seconds.

9. Set NIBP simulator as follows: Systolic of 120mmHg, Diastolic of 80mmHg and pulse rate of 80 bpm.

10. Press NIBP start/stop button.

11. Verify following the monitor reaction after measurement completes:

a. The monitor displays NIBP and pulse rate as specified by the simulator.

b. The alarm is terminated.

12. Disconnect NIBP simulator from the monitor.

13. Kink NIBP cuff hose connector of monitor and then press NIBP start/stop button.

14. Verify that the monitor displays an error code, E23 and sounds audible alarm.

15. Press Alarm silence button.

16. Verify that the alarm is terminated.

ARGUS VCM Service Manual 15

Performance Verification

Pulse Tone Volume Control

1. Connect the monitor to an AC power source.

2. Press Power button to turn the monitor on.

3. Connect SpO

monitor.

4. Set SpO

5. Verify SpO2/ pulse rate values and pulse amplitude indicator correctly display, and

pulse tone sounds.

6. Press the mode button to enter setting mode.

7. Press Up (+) selection button to adjust pulse tone volume from 1 to 8. Return to the

monitoring screen.

8. Verify beeping pulse tone increases.

9. Press the mode button to enter setting mode.

10. Press Down (-) selection button to adjust pulse tone volume from 8 to 1. Return to

the monitoring screen.

11. Verify beeping pulse tone decreases.

12. Set pulse tone volume to 0, and return to the monitoring screen. Verify pulse tone is

no longer audible.

2 simulator as follows: SpO2 of 90% and pulse rate of 60 bpm.

ARGUS VCM

2 simulator to the pulse oximetry cable and connect the cable to the

13. Return pulse tone volume to a comfortable level.

Alarm Volume Control

1. Connect the monitor to an AC power source.

2. Press Power button to turn the monitor on.

3. Kink NIBP cuff hose connector of the monitor and then press NIBP start/stop button.

4. Verify that the monitor ‘E23’ displays and sounds audible alarm.

5. Press the mode button to enter setting mode.

6. Press Up (+) selection button to adjust alarm volume from 1 to 8. Return to the

monitoring screen.

7. Verify alarm tone increases.

8. Press the mode button to enter setting mode.

9. Press Down (-) selection button to adjust alarm volume from 8 to 1. Return to the

monitoring screen.

10. Verify alarm tone decreases.

11. Return alarm volume to a comfortable level.

Real-Time Clock

1. Connect the monitor to an AC power source.

2. Press Power button to turn the monitor on.

3. Verify that Time display updates every second.

16 ARGUS VCM Service Manual

ARGUS VCM

Printer Test

Flash Memory

Performance Verification

If Printer option installed, the following test procedures will verify printer performance.

1. Connect the monitor to an AC power source.

2. Press Power button to turn the monitor on.

3. Connect all necessary simulators to the monitor.

4. Press Printer button when the monitor displays the measurements.

5. Verify the measurement values are printed out correctly.

6. Press the mode button over 3 seconds (configuration mode) to select Stream print.

7. Kink NIBP cuff hose connector of the monitor and then press NIBP start/stop button.

8. Verify that the monitor ‘E23’ displays and also prints out.

9. Open the printer door, and then press Print button.

10. Verify that the monitor sounds ‘invalid button tone’.

Perform the following procedure to test the flash memory.

1. Connect the monitor to an AC power source.

2. Press Power button to turn the monitor on.

3. Change alarm limits and other settings.

 Temperature mode C M  Alarm Limit, SYS HI 160  Alarm Limit, DIA LO 15  Alarm Limit, PR HI 180  Alarm Limit, SpO

4. Kink NIBP cuff hose connector of the monitor to generate an error ‘E23’.

5. Turn the monitor off.

6. Press Power button to turn the monitor on again.

7. Verify that previously changed alarm limits and settings are saved/displayed.

8. Press Review button. Verify that ‘E23’ event is saved/displayed.

9. Turn the monitor off.

10. Press Power button & NIBP start/stop button simultaneously to enter Service mode.

11. Set ‘DEFAULT RESET’ to ‘YES’. The monitor will return to the factory defaults.

12. Turn the monitor off.

13. Press Power button to turn the monitor on again.

14. Verify that alarm limits and settings of the monitor are set to the factory defaults. Refer to Table 8 Factory defaults.

15. Press Review button. Verify invalid button tone sounds and all events of trend data

has been removed.

2 LO 85

ARGUS VCM Service Manual 17

Performance Verification

Measurement Parameter Operation Tests

Pneumatic System Operation

These tests verify the functionality of

1. Place the neonatal cuff with a rigid PVC vessel (5cm diameter). Connect the cuff to NIBP cuff hose connector via the neonatal hose.

2. Connect the monitor to an AC power source, and then press Power button to turn the monitor on.

3. Press NIBP start/stop button.

4. Verify that Systolic blood pressure display indicates an error code E23 and an audible alarm sounds.

5. Press the mode button (setting mode) to change Patient type to Neonatal. Return to the monitoring screen.

6. Press NIBP start/stop button. Verify that the monitor inflates.

7. Press NIBP start/stop button. Verify that the monitor deflates.

8. Place the adult cuff with a rigid PVC vessel (9cm diameter). Connect the cuff to NIBP cuff hose connector via the adult hose.

9. Press NIBP start/stop button.

10. Verify that Systolic blood pressure display indicates an error code E22 (or E24) and an audible alarm sounds.

11. Press the mode button (setting mode) to change Patient type to Adult. Return to the monitoring screen.

12. Press NIBP start/stop button. Verify that the monitor inflates.

13. Press NIBP start/stop button. Verify that the monitor deflates.

NIBP air leakage test

1. Connect the monitor to an AC power source.

2. Press Power button and NIBP start/stop button to enter Service mode.

3. Select NIBP Pressure Test by pressing Mode button (see figure 12).

4. Set a desired target pressure between 50and 300mmHg by pressing Up/Down (+/-) selection buttons.

5. Place the adult cuff with a rigid PVC vessel (9cm diameter). Connect the cuff and the adult hose to NIBP simulator. Then connect the adult hose to the monitor.

6. Set NIBP simulator to Pressure test or Leakage test mode.

7. Select the set point of NIBP simulator as the same point of target pressure of the monitor.

8. Press NIBP start/stop button of the monitor as simultaneously pressing start button of NIBP simulator. Current pressure appears on the diastolic pressure display.

9. After current inflating pressure comes up to the desired target pressure, the monitor starts deflating. Ensure that air leakage rate displays.

10. Verify that air leakage rate is within 6mmHg/min.

ARGUS VCM

ARGUS VCM pneumatic system.

18 ARGUS VCM Service Manual

ARGUS VCM

Performance Verification

NIBP overpressure test

1. Connect the monitor to an AC power source, and then press Power button to turn the monitor on.

2. Press Mode button. Set to Adult patient type and NIBP target pressure, 270mmHg.

3. Place the adult cuff with a rigid PVC vessel (9cm diameter). Connect the cuff and the adult hose to NIBP simulator. Then connect the adult hose to the monitor.

4. Set NIBP simulator to Pressure relief or Overpressure test mode.

5. Press NIBP start/stop button of the monitor as simultaneously pressing start button of

NIBP simulator. NIBP simulator pressurizes the system until the monitor’s overpressure relief system activates.

6. Verify that peak point displayed on NIBP simulator (point of protection pressure) is

within 300mmHg. Also this point of protection pressure may be verified at the moment of the monitor’s NIBP valve of relieved.

NIBP transducer accuracy test

1. Follow the procedure of NIBP air leakage test specified above.

2. During the deflation of the cuff pressure, verify that the difference is within ±3mmHg between monitor’s current pressure and simulator’s current pressure.

Pulse Oximetry Operation

2 option installed, the following test procedures will verify SpO2 performance.

If SpO

1. Connect the monitor to an AC power source.

2. Turn on the monitor by pressing Power button.

3. Connect SpO monitor.

4. Set SpO

5. The monitor will:

- sound an audible alarm

- display an SpO

- display a pulse rate of 60 ±3 bpm

- display Pulse amplitude indicator

6. Disconnect the pulse oximetry cable from the monitor.

7. Verify that the monitor displays an error code, E42 and sounds audible alarm.

2 simulator as follows: SpO2 of 75% and pulse rate of 60 bpm.

2 simulator to the pulse oximetry cable and connect the cable to the

2 of 75 ±2 digits (flashing)

ARGUS VCM Service Manual 19

Performance Verification

Temperature Operation

If Temperature option installed, the following test procedures will verify temperature performance.

1. Connect the monitor to an AC power source.

2. Press Power button to turn the monitor on.

3. Connect temperature probe to the temperature connector of the monitor.

4. Set Temperature tester to 96.4

5. Press the mode button (setting mode) to select ‘F M’ (monitored mode).

6. Insert the temperature probe into ‘…’ of Temperature tester when ‘Ready’ indicator of the test is on.

7. After 3 minutes, verify that the monitor displays 96.1

 Measurement accuracy: ±0.2° F

 Temperature tester accuracy: ±0.1° F

8. Return the probe into the probe holder.

9. Verify that Temperature display indicates ‘- -‘.

ARGUS VCM

° F.

° F ~ 96.7° F.

20 ARGUS VCM Service Manual

ARGUS VCM

Safety Tests

ARGUS VCM

IEC60601-1, Clause 19 (Second Edition, 1988; Amendment 1, 1991-11, Amendment 2, 1995-03), for instruments classified as Class I, Type BF.

Protective Earth Continuity

This test checks the integrity of the power cord ground wire from the AC plug to the instrument chassis ground. The current used for this test is less than or equal to 4 Volts RMS, 50 to 60 Hz, and 25 Amperes.

1. Connect the monitor AC mains plug to the analyzer as recommended by the analyzer

operating instructions.

2. Connect the analyzer resistance input lead to the equipotential terminal (ground lug)

on the rear of the instrument. Verify that the analyzer indicates 100 milliohms or less.

Electrical Leakage

Earth Leakage Current

This test is in compliance with IEC60601-1 earth leakage current. The applied voltage for IEC60601-1 the voltage is 264 Volts AC, 50 to 60 Hz. All measurements shall be made with the power switch in both “On” and “Off” positions.

1. Connect the monitor AC plug to the electrical safety analyzer as recommended by the

analyzer operating instructions.

2. Perform test as recommended by analyzer operating instructions.

safety tests meet the standards of, and are performed in accordance with,

Performance Verification

Normal Condition (NC) 500

SFC Open Supply (SFC OS) 1000

Normal Condition RM (NCRM) 500

SFC Open Supply RM (SFC OSRM) 1000

Note: Earth leakage current is measured under various conditions of the AC mains and

protective earth conductor. For each condition, the measured leakage current must not exceed that indicated in Table 2.

Note: NC-normal condition

Enclosure Leakage Current

This test is in compliance with IEC60601-1 enclosure leakage current. This test is for ungrounded enclosure current, measured between enclosure parts and earth. The applied voltage for IEC60601-1 the applied voltage is 264 Volts AC at 50 to 60 Hz.

1. Connect the monitor AC plug to the electrical safety analyzer as recommended by the analyzer operating instructions.

2. Place a 200 cm contact with any metal parts of the enclosure that may be grounded.

Table 2. Earth Leakage Current Values

Test Condition Allowable Leakage Current (microamps)

/ SFC-single fault condition / RM-reverse mains/line voltage

foil in contact with the instrument case making sure the foil is not in

ARGUS VCM Service Manual 21

Performance Verification

3. Measure the leakage current between the foil and earth.

Note: The analyzer leakage current indication must note exceed the values listed in Table

ARGUS VCM

Table 3. Enclosure Leakage Current

Normal Condition RM (NCRM) 100

SFC Open Supply RM (SFC OSRM) 500

SRC Open Earch RM (SFC OERM) 500

Patient Leakage Current

This test measures patient leakage current in accordance with IEC60601-1, clause 19, for Class I, Type BF equipment. Patient leakage current in this test is measured from any individual patient connection to earth (power ground).

1. Configure the electrical safety analyzer as recommended by the analyzer operating

instructions.

2. Connect the monitor’s AC mains power cord to the analyzer as recommended by the

analyzer operating instructions.

3. Apply NIBP cuff wrapped tightly around an appropriate metal cylinder.

4. Connect a test cable between the cylinder and an input connector on analyzer.

5. Turn on

6. Perform the patient leakage current test as recommended by the analyzer operating

instructions.

7. Repeat the patient leakage current test for SpO

if those options configured, using the appropriate test cables.

Note: Patient leakage current is measured under various conditions of the AC mains and

protective earth conductor. For each condition, the measured leakage current must not exceed that indicated in Table 4.

Note: This test requires a test cable for each patient connector. Test cables for NIBP, SpO

and temperature can be configured in a similar manner, by wrapping each sensor end individually with aluminum foil filled with conductive gel (only enough gel to ensure conductivity). Attach a wire to the foil that is connected to a test lead from the electrical safety analyzer.

Test Condition

Normal Condiction (NC) 100

SFC Open Supply (OS) 500

SFC Open Earch (SFC OE) 500

ARGUS VCM.

Allowable Leakage Current (microamps)

2 and temperature patient connections,

Table 4. Patient Leakage Current Values

Test Condition

Normal Condiction (NC) 100

SFC Open Supply (OS) 500

SFC Open Earch (SFC OE) 500

Normal Condition RM (NCRM) 100

SFC Open Supply RM (SFC OSRM) 500

SRC Open Earch RM (SFC OERM) 500

22 ARGUS VCM Service Manual

Allowable Leakage Current (microamps)

ARGUS VCM

Patient Leakage Current - (Mains Voltage on the Applied Part)

WARNING: AC mains voltage will be present on the applied part terminals during this test. Exercise caution to avoid electrical shock hazard.

WARNING: Do not touch the patient leads clips or the simulator parts connected to patient leads during this test as an electrical shock will occur.

This test measures patient leakage current in accordance with IEC60601-1, clause 19, for Class I, type BF equipment. In this test, 110% of mains voltage is applied between each patient connection and earth (power ground). Patient leakage current is then measured from any individual patient connection to earth.

Note: Keep the patient test cable length as short as possible during the leakage test.

Note: This test requires the same test cables for each patient connector as described

above Patient Leakage Current.

1. Configure electrical safety analyzer as recommended by analyzer operating

instructions.

2. Connect the monitor’s AC mains power cord to analyzer as recommended by analyzer

operating instructions.

3. Apply NIBP cuff wrapped tightly around an appropriate metal cylinder.

4. Connect a test cable between the cylinder and an input connector on analyzer.

5. Turn on

6. Perform test as recommended by analyzer operating instructions.

7. Repeat test for SpO

using appropriate test cables.

Note: Patient leakage current is measured with normal and reverse mains polarity. For

ARGUS VCM.

2 and temperature patient connections, if those options configured,

each condition, the measured leakage current must not exceed that indicated in Table 5.

Performance Verification

Table 5. Patient Leakage Current Values—Mains Voltage on Applied Part

Reverse polarity (SFCRM) 5000

Patient Auxiliary Current

This test measures patient auxiliary current in accordance with IEC60601-1, clause 19, for Class I, type BF equipment. The applied voltage for IEC60601-1 the voltage is 264 volts, 50 to 60 Hz. Patient auxiliary current is measured between each test cable for all possible connections.

Note: Keep the patient test cable length as short as possible during the leakage test.

Note: This test requires the same test cables for each patient connector as described in

Patient Leakage Current.

Test Condition

Normal polarity (SFC) 5000

Allowable Leakage Current (microamps)

ARGUS VCM Service Manual 23

Performance Verification

1. Configure the electrical safety analyzer as recommended by the electrical analyzer’s operating instructions.

2. Connect monitor’s AC mains power cord to the electrical analyzer as recommended by the electrical analyzer’s operating instructions.

3. Connect the patient test lead combination in table 6 to the appropriate input connector on the electrical analyzer.

4. Turn on ARGUS VCM.

5. Perform patient auxiliary current test per table 7 as recommended by electrical analyzer’s operating instructions.

6. Repeat the patient auxiliary current test for each test lead combination as listed in Table 7 and measure each patient auxiliary current.

ARGUS VCM

Table 6. Test Lead Combinations

First Test Lead

Temperature probe NIBP cuff

Temperature probe SpO2 sensor

NIBP cuff SpO2 sensor

Second Test Lead

Table 7. Allowable Leakage Current

Test Condition

Normal Condiction (NC) 100

SFC Open Supply (OS) 500

SFC Open Earch (SFC OE) 500

Normal Condition RM (NCRM) 100

SFC Open Supply RM (SFC OSRM) 500

SRC Open Earch RM (SFC OERM) 500

Allowable Leakage Current (microamps)

24 ARGUS VCM Service Manual

Service Mode and Demo Mode

Introduction Service Mode Demo Mode

Introduction

This section describes Service mode that allows authorized personnel to review/check system version, battery voltage level, NIBP inflation cycle, total system runtime, factory default reset, night panel, NIBP calibration, NIBP pressure test and sound calibration in order to obtain service-related information about the monitor. Also this section explains how to demonstrate the monitor (Demo mode).

Service Mode

Follow the procedure below to enter Service mode.

1. With the monitor powered off, press Power button and NIBP start/stop button simultaneously.

2. System version displays on the monitor.

3. Press Mode button to select a mode item.

System Version

The revision level of the system software displays: system software version, NIBP module version, SpO

System version

2 module version and Temperature module version.

NIBP module version

SpO2 module version

Temperature module version

Figure 5. System Version

ARGUS VCM Service Manual 25

Service Mode and Demo Mode

Battery Voltage Level

Current battery voltage level is displayed (unit of voltage: V).

NIBP Inflation Cycle

The number of NIBP inflation cycles operated is displayed.

Figure 6. Battery Voltage Level

󰼿

ARGUS VCM

Note: The values of NIBP inflation cycle may not be reset, but it will be reset to zero

when a new Main PCB assembly is installed.

Figure 7. NIBP Inflation Cycle

26 ARGUS VCM Service Manual

󰼿

ARGUS VCM

Total System Runtime

Total Runtime displays the number of hours, rounded to the nearest hour, that the monitor has been operational.

Note: The values of Total Runtime may not be reset, but it will be reset to zero when a

new Main PCB assembly is installed.

Factory Default Reset

To reset the monitor operating parameters to the factory default settings, press the Mode button until “ DEFAULT RESET=NO” is displayed.

To reset to the factory default values, select ‘YES’ using only Up (+) selection button. The monitor immediately resets to the defaults and the confirmation tone sounds.

To leave the settings unchanged, select ‘NO’ using only Down (-) selection button.

Service Mode and Demo Mode

Figure 8. Total Runtime

Figure 9. Factory Defaults Reset

ARGUS VCM Service Manual 27

Service Mode and Demo Mode

Factory default settings are described in Table 8.

Table 8. Factory Default Settings for ARGUS VCM

Parameter Ranges Defaults

Systolic (mmHg) Neonatal Low: 25 to 115 High: 30 to 120 50, 100

Alarm Limits Pediatric Low: 30 to 155 High: 35 to 160 75, 145

Adult Low: 30 to 255 High: 35 to 260 75, 220

Diastolic (mmHg)

Alarm Limits Pediatric Low: 15 to 125 High: 20 to 130 35, 100

Adult Low: 20 to 250 High: 25 to 255 35, 110

MAP (mmHg) Neonatal Low: 10 to 105 High: 15 to 110 35, 80

Alarm Limits Pediatric Low: 15 to 135 High: 20 to 140 50, 110

Adult Low: 20 to 250 High: 25 to 255 50, 120

PR (bpm) Neonatal Low: 25 to 295 High: 30 to 300 100, 200

Alarm Limits Pediatric Low: 25 to 295 High: 30 to 300 50, 150

Adult Low: 25 to 295 High: 30 to 300 50, 120

SpO2 % Neonatal Low: 50 to 98 High: 52 to 100 85, 98

Alarm Limits Pediatric Low: 50 to 98 High: 52 to 100 90, 100

Adult Low: 50 to 98 High: 52 to 100 90, 100

Patient Type Adult, Pediatric, Neonatal Adult

NIBP Units mmHg, kPa mmHg

NIBP initial cuff inflation

Pediatric

Adult

NIBP Auto Interval Off, STAT, 1, 2, 3, 4, 5, 10, 15, 30,

Temperature Units/Modes °C, °F, °C M, °F M °F

Pulse Tone Volume 0 to 8 4

Alarm Volume 1 to 8 4

Night Panel On, Off Off

Print Control Manual, Stream Manual

Neonatal Low: 10 to 100 High: 15 to 105 30, 70

Neonatal

ARGUS VCM

50, 60, 70, 80, 90, 100, 110, 120, 132 mmHg

(6.6, 7.9, 9.3, 10.6, 11.9, 13.3, 14.6, 15.9, 17.5 kPa)

80, 90, 100, 110, 120, 130, 140, 150, 160, 170 mmHg

(10.6, 11.9, 13.3, 14.6, 15.9, 17.2, 18.6, 19.9, 21.2, 22.6 kPa)

100, 120, 140, 160, 180, 200, 220, 240, 270 mmHg

(13.3, 15.9, 18.6, 21.2, 23.9, 26.6, 29.2, 31.9, 35.9 kPa)

45, 60, 90, 120, 240

90 mmHg (11.9 kPa)

120 mmHg

(15.9 kPa)

160 mmHg

(21.2 kPa)

28 ARGUS VCM Service Manual

󰼿

ARGUS VCM

Night Panel

Night panel is used to adjust the light intensity of the display. With ‘Night Panel’ selected,

- select ‘YES’ using only Up (+) selection button to degrade the light intensity between 21:00 to 06:00.

- select ‘No’ using only Down (-) selection button not to use this option.

NIBP Calibration

‘NIBP Calibration’ is used to calibrate NIBP pneumatic pump. With ‘NIBP Calibration’ selected,

1. Connect the NIBP adult hose to the monitor.

2. Kink the distal end (farthest from the monitor).

3. Press Up (+) selection button to start calibration.

4. The monitor displays ‘ING’ during the calibration.

5. Wait for about 20 seconds to complete.

6. Verify that Time display indicates one of digits from 040000 to 070000 after ‘End’

7. Turn off the monitor.

8. After a few seconds, power on the monitor.

Service Mode and Demo Mode

message appears. (If fails, refer to Troubleshooting section.)

Figure 10. Night Panel

Figure 11. NIBP Calibration

ARGUS VCM Service Manual 29

Service Mode and Demo Mode

NIBP Pressure Test

The real-time value of the system pneumatic pressure is displayed in mmHg. For more information, refer to Performance Verification section. With ‘NIBP Pressure Test’ selected,

1. Place the adult cuff with a rigid PVC vessel (9cm diameter). Connect the cuff and the adult hose to NIBP simulator. Then connect the adult hose to the monitor.

2. Set NIBP simulator to a test mode required.

3. Adjust a desired target pressure using Up/Down (+/-) selection buttons.

4. Press NIBP start/stop button.

󰼿

ARGUS VCM

Sound Calibration

‘Sound Calibration’ is used to set a level of sound volume at factory. With ‘Sound Calibration’ selected,

1. Press Up (+) selection button.

2. Verify that the level 1 of the volume sounds continuously.

Figure 12. NIBP Pressure Test

Figure 13. Sound Calibration

30 ARGUS VCM Service Manual

󰼿

ARGUS VCM

Demo Mode

Service Mode and Demo Mode

The purpose of Demo mode is to show a visual presentation demonstrating how

ARGUS VCM monitor works. The following procedure is set to Demo mode.

1. With the monitor powered off, press Power button and Alarm silence button simultaneously.

2. The monitor is now set to Demo mode, and demonstrates a typical the monitoring display.

Note: No setting changes allowed.

Note: Only beep tones may be off or on by pressing Up/Down (+/-) selection buttons.

Alarm silence button can be accessed in order to demonstrate Alarm silence indicator illuminated.

Figure 14. Demo Mode Display

ARGUS VCM Service Manual 31

Service Mode and Demo Mode

This page is intentionally left blank.

ARGUS VCM

32 ARGUS VCM Service Manual

Firmware download

Introduction Equipment Needed How to Download

Introduction

This section is for the purpose of reloading Firmware (software?) into the monitor when the possibility of corrupted Firmware exists, or updating Firmware with a new system revision (system/device version). Call Schiller Technical Service Department for the latest version of Firmware and utility required.

Equipment Needed

Table 9 lists the equipment required for Firmware download.

Table 9. Required Equipments for Firmware download

Equipment Description

Firmware Downloading Cable 9-pin Serial Cable (use only Mediana provided)

Firmware Downloading Software Rabbit Field Utility

Personal Computer With Serial Port

How to Download

1. Turn off the monitor.

2. Connect Firmware downloading cable to the data interface port of the monitor.

3. Connect the other side of Firmware downloading cable to a PC.

4. Run RFU.EXE (Rabbit Field Utility) on the PC.

5. Choose Setup.

6. Click on Communication.

7. Check Use Serial Connection and Enable Processor Detection.

8. Set Baud Rate to 115200.

9. Select an appropriate COM Port that current Firmware downloading cable connected.

10. Click OK.

11. Press Power button to turn on the monitor.

12. Verify that Network indicator is flashing.

13. Choose File > Load Flash Image.

14. Use the browser to select a binary file e.g. 20040630_VER1.00_SCHILLER.BIN.

15. Click OK to start downloading.

ARGUS VCM Service Manual 33

Firmware download

16. After completion of downloading, turn off the monitor.

17. Disconnect Firmware downloading cable from the monitor and PC.

18. Press Power button and NIBP start/stop button simultaneously to enter Service mode of the monitor.

19. Press Mode button to go to DEFAULT RESET.

20. Select DEFAULT RESET=YES to reset the monitor to factory defaults.

21. Turn off the monitor.

22. After a few seconds, turn the monitor on.

23. Perform the tests specified in Performance Verification section.

Note: Only Mediana provided Firmware download cable must be used. Otherwise,

Main BD may be damaged.

Note: Software versions of OEM boards are not field-upgradeable. (NIBP, SpO

Temperature module.) Replace the subsystem board with a higher (current) version if necessary.

Note: If any problem during Firmware downloading, refer to Firmware Download in

Troubleshooting section.

ARGUS VCM

2 or

34 ARGUS VCM Service Manual

Troubleshooting

Introduction How to Use This Section Who Should Perform Repairs Replacement Level Supported Troubleshooting Guide

Introduction

This section explains how to troubleshoot Tables are supplied that list possible difficulties and recommended actions to correct the difficulty.

How to Use This Section

Use this section in conjunction with Performance Verification section and Spare Parts section. To remove and replace a part you suspect is defective, follow the instructions in

Disassembly Guide section.

Who Should Perform Repairs

Only qualified service personnel should open the monitor housing, remove and replace components, or make adjustments in accordance with this service manual. If your medical facility does not have qualified service personnel, contact Schiller Technical Services.

Replacement Level Supported

The replacement level supported for this product is to the printed circuit board (PCB assembly) and major subassembly level. Once you isolate a suspected PCB assembly, follow the procedures in Disassembly Guide section, to replace the PCB assembly with a known good PCB assembly. Check to see if the trouble symptom disappears and that the monitor passes all performance tests. If the trouble symptom persists, swap back the replacement PCB assembly with the suspected malfunctioning PCB assembly (the original PCB assembly that was installed when you started troubleshooting) and continue troubleshooting as directed in this section.

Obtaining Replacement Parts

Schiller Technical Services provides technical assistance information and replacement parts. To obtain replacement parts, contact Schiller. Refer to parts by the part names and part numbers listed in Spare Parts section.

ARGUS VCM if problems arise.

ARGUS VCM Service Manual 35

Troubleshooting

Troubleshooting Guide

Power

Problems with instructions.

Note: Taking the recommended actions discussed in this section will correct the majority

of problems you will encounter. However, problems not covered here can be resolved by calling Schiller Technical Services.

Power problems are related to AC and/or Battery as follows. If the action requires replacement of the components, refer to Disassembly Guide.

CAUTION: Electrical shock hazard. Disconnect a power cord from ARGUS VCM before attempting to open or disassemble ARGUS VCM.

1. Before further troubleshooting of the power problems:

1-1. Review customer complaint and determine if it is safe to plug in and turn on

ARGUS VCM.

1-2. Verify that Charging/AC in indicator is lit (or flashing) as a power cord is

connected. 1-3. Check fuses (F1, F2 and F3) located on SMPS. If blown, replace fuses. 1-4. Check the connection of 8-pin wire between Main BD and SMPS. 1-5. Check the connection of 5-pin wire between Battery and SMPS.

2. When AC power cord is connected to front panel is not lit.

2-1. Check fuses (F1, F2 and F3) located on SMPS. If blown, replace fuses. 2-2. Replace 8-pin wire connected between Main BD and SMPS. 2-3. Replace Main BD if problem persists. 2-4. Replace SMPS if problem persists after Main BD replaced. 2-5. Replace FND module if problem still persists.

ARGUS VCM fails to power-up when Power button is pressed.

3-1. Check on action 1-2 to 1-5. 3-2. Download Firmware (see Firmware download section). 3-3. Replace 8-pin wire of Main BD connected to SMPS if problem persists. 3-4. Replace Main BD if problem persists. 3-5. Replace Rubber button. 3-6. Replace SMPS if problem persists.

ARGUS VCM is operating on AC main, but not operating on Battery.

4-1. Check on action 1-2 to 1-5. 4-2. The battery may be discharged. To recharge the battery, connect a power cord to

AC mains over 12 hours (refer to Battery charge in Performance Verification section). Note: The monitor may be used with a less than fully charged battery but with a corresponding decrease in operating time from that charge. The battery may be

defective. 4-3. Replace Battery if problem persists after fully charged. 4-4. Replace SMPS if problem persists after Battery replaced.

ARGUS VCM are separated into the categories for further troubleshooting

ARGUS VCM

ARGUS VCM, Charging/AC in indicator on the

36 ARGUS VCM Service Manual

Display

Sound

ARGUS VCM

The followings are symptoms of problems relating to non-functioning displays, and recommended actions. If the action requires replacement of a PCB assembly or module, refer to Disassembly Guide.

1. Display is totally black (no data is visible) after system powers up.

1-1. Replace Main BD. 1-2. Replace FND module.

2. Not all display segments light during POST.

2-1. Verify that Main BD connector is properly connected to FND module. 2-2. Replace FND module if problem persists. 2-3. If problem persists, replace Main BD after FND module replaced.

3. Values are erratically displayed after system powers up.

3-1. Verify that Main BD connector is properly connected to FND module. 3-2. Replace FND module if problem persists. 3-3. If problem persists, replace Main BD after FND module replaced.

4. No visual alarm displayed during alarm condition.

4-1. Ensure that alarm limits are properly set. 4-2. Ensure that patient type is correctly set. 4-3. Ensure that patient measurement cables are properly connected and placed. 4-4. Replace Main BD if problem persists. 4-5. Replace acquisition modules (NIBP, SpO

The followings are symptoms of problems and recommended actions relating to sound. If the action requires replacement of a PCB assembly or module, refer to Disassembly

Guide.

1. Audible tones do not sound after system powers up.

1-1. Verify that Speaker is working properly. If necessary, replace Speaker. 1-2. Check the connection of 2-pin wire between Speaker and Main BD. 1-3. If problem persists, replace Main BD.

2. Sound volume is too low to be heard.

2-1. Check if a level of volume is set to minimum value.

2-2. Adjust the trim-pot (R117) on Main BD. 2-3. If problem persists, replace Main BD.

3. Audible tones sound, but a level of sound volume does not change even a level is set to 8.

3-1. Adjust the trim-pot (R117) on Main BD. 3-2. If problem persists, replace Main BD.

Troubleshooting

2 or Temperature) if problem persists.

Refer to page 30, 31 in the operator’s manual.

ARGUS VCM Service Manual 37

Troubleshooting

Buttons

The following is a symptom of problems and recommended actions relating to buttons. If the action requires replacement of a PCB assembly, refer to Disassembly Guide.

1. Buttons do not respond and/or buttons are operating with pressed.

1-1. Replace Rubber button on Main BD. 1-2. If problem persists, replace Main BD.

2. Buttons do respond, but no button tones when pressed.

2-1. Ensure that Speaker is damaged to fail. 2-2. Check the connection of 2-pin wire between Speaker and Main BD. 2-3. Adjust the trim-pot (R117) on Main BD. 2-4. If problem persists, replace Main BD.

NIBP Performance

The followings are symptoms of problems and recommended actions relating to NIBP operational performance. If the action requires replacement of a PCB or module, refer to

Disassembly Guide.

1. Dashes ‘- - -‘ are flashing on NIBP display.

1-1. Go to Service mode. Perform NIBP Calibration (see Service Mode section). 1-2. If NIBP Calibration is not able to perform, check the connection of 24-pin ribbon

1-3. If problem persists, replace NIBP module. 1-4. Replace Main BD, if problem persists after NIBP module replaced.

2. After NIBP calibration, the digit shown in Time display is outside of 040000~070000.

2-1. Turn off the monitor. 2-2. Go to Service mode. Perform NIBP Calibration again (see Service Mode section). 2-3. If problem persists, verify that internal silicon tubing is kinked or disconnected. 2-4. Replace NIBP module and pump if problem still persists.

3. Often error codes, E22, E23 and/or E24 display(s).

3-1. Ensure that an appropriate cuff and hose are used to correspond with Patient

3-2. Go to Service mode. Perform NIBP Calibration (see Service Mode section). 3-3. If problem persists, replace NIBP pump.

4. Error code, E29 displays.

4-1. Replace both NIBP module and pump. 4-2. If problem persists, replace Main BD.

ARGUS VCM

cable between NIBP module and Main BD.

type selected.

38 ARGUS VCM Service Manual

ARGUS VCM

Troubleshooting

SpO2 Performance

The followings are symptoms of problems and recommended actions relating to SpO operational performance. If the action requires replacement of a PCB or module, refer to

Disassembly Guide.

1. No displays (blank) on SpO

1-1. Replace SpO 1-2. If problem persists, replace Main BD.

2. Dashes ‘- -‘ are displaying on SpO

2-1. Verify that red LED of SpO 2-2. Ensure that the LED intensity increases when opening the SpO 2-3. If problem persists, replace SpO

3. Error code, E49 displays.

3-1. Replace SpO

Temperature Performance

The followings are symptoms and recommended actions to address problems with temperature operational performance. If the action requires replacement of a PCB or module, refer to Disassembly Guide.

1. No displays (blank) on Temperature display.

1-1. Check the connection of 5-pin wire between Temperature PCB and Main BD. 1-2. Replace Temperature PCB if problem persists. 1-3. Replace Temperature module if problem still persists. 1-4. If problem persists after Temperature module replaced, replace Main BD.

2. Dashes ‘- -‘ are displaying on Temperature display, but no data measured.

2-1. Use another temperature probe. 2-2. Check the connection of 5-pin wire between Temperature PCB and Main BD. 2-3. Replace Temperature PCB if problem persists. 2-4. Replace Temperature module if problem still persists.

3. Error codes, E63 and/or E64 often display(s).

3-1. Use another temperature probe. 3-2. Replace Temperature module if problem persists.

4. Error code, E65 often displays.

4-1. Replace Temperature PCB. 4-2. Replace Temperature module if problem persists.

5. Error code, E69 displays.

5-1. Replace Temperature module.

2 display.

2 module.

2 display, but no data measured.

2 sensor is on. If not, replace the SpO2 sensor.

2 sensor.

2 module.

ARGUS VCM Service Manual 39

Troubleshooting

Printer

The followings are symptoms of problems and recommended actions related to printing. If the action requires replacement of a PCB or module, refer to Disassembly Guide.

1. Print setting indicator does not light after system powers up.

1-1. Check the connection of 6-pin wire between Printer and Main BD. 1-2. Replace Printer. 1-3. Replace Main BD if problem persists after Printer replaced.

2. Print setting indicator is lit, but no printing after Print button pressed.

2-1. Ensure that Printer door is properly closed. 2-2. Check if Printer paper runs out. 2-3. Ensure that Printer paper is placed appropriately. 2-4. Check the connection of 6-pin wire between Printer and Main BD. 2-5. Replace Printer if problem still persists.

Firmware download

The followings are symptoms and recommended actions to address problems with firmware download. If the action requires replacement of a PCB, refer to Disassembly

Guide.

1. Network indicator is not flashing with the pressure of Power button after Firmware downloading cable connected.

1-1. Check on action 1-2 to 1-5 of Power troubleshooting (page…). 1-2. Ensure that Mediana Firmware downloading cable is connected. 1-3. Ensure that Firmware downloading cable is properly connected to the data

1-4. Check the connection of 9-pin serial wire of the monitor inside. 1-5. Replace Main BD if problem persists.

2. Network indicator is flashing, but Firmware download/update fails.

2-1. Ensure that COM port of Field utility is properly set. 2-2. Verify that COM port of a PC operates correctly. 2-3. Reboot a PC. 2-4. Ensure that Mediana Firmware downloading cable is connected. 2-5. Ensure that Firmware downloading cable is properly connected to the data

2-6. Check the connection of 9-pin serial wire of the monitor inside. 2-7. Replace Main BD if problem persists.

ARGUS VCM

interface port of the monitor. Also ensure that the other side of Firmware downloading cable is well connected to a PC.

40 ARGUS VCM Service Manual

Others

ARGUS VCM

The followings are symptoms of problems and recommended actions that may happen related to operating the monitor. If the action requires replacement of a PCB or module, refer to Disassembly Guide.

1. No operation but Network indicator flashing after system powers up.

1-1. If a cable connected to the data interface port of the monitor, disconnect the cable.

1-2. Replace Main BD if problem persists. 1-3. Replace 9-pin serial wire if problem persists after Main BD replaced.

2. During POST, all display segments and indicators are illuminated but stopped to

process.

2-1. Press Power button to turn the monitor off. 2-2. Verify that the monitor powers off. If the system still powered on, open Battery

2-3. Download the latest version of Firmware if problem persists. 2-4. Replace Main BD if problem still persists.

3. Error code, E02 often displays after completion of POST.

3-1. Check the connection of 8-pin wire between SMPS and Main BD. 3-2. Check the connection of 5-pin wire between SMPS and Battery. 3-3. Ensure that Battery is fully charged. 3-4. Replace Battery if problem persists. 3-5. Replace Main BD if problem persists after Battery replaced.

4. Settings and/or measured data are not saved in the memory of the monitor.

4-1. Replace Main BD.

5. Time display is not updated and/or does not indicate current time.

5-1. Replace Lithium battery (BT1) on Main BD. 5-2. Replace Main BD if problem persists.

6. Error code, E09 often displays.

6-1. Replace both SMPS and Main BD.

Troubleshooting

Then, turn on the monitor.

cover. Then separate Battery terminals to power off the system.

ARGUS VCM Service Manual 41

Troubleshooting

Error Codes

When code on the display screen.

If such an error occurs during the monitoring operation, the monitor will sound a lowpriority alarm. Audible alarm can be terminated if the alarm silence button pressed, but it depends on error codes and conditions.

Table 10 provides a complete list of error codes and problem identification.

ARGUS VCM

ARGUS VCM detects an error condition, the monitor will attempt to show an error

Table 10. Technical Error Codes

Error Codes Description

E01 Battery failure E02 Abnormally shutdown last time E09 System error (malfunction) E21 Air leakage E22 Cuff not detected E23 Kinked or neonate hose E24 Cuff too large for neonate E25 Overpressure condition E26 Motion artifact E27 Weak pulse or no pulse detected E28 Valid BP not found E29 NIBP module error (malfunction) E41 Sensor off E42 Sensor disconnected E43 Bad sensor E44 Loss of pulse E49 SpO2 module error (malfunction) “P” Loss of tissue contact E62 Probe disconnected E63 Probe error E64 Probe heated too high E65 Ambient temperature out of range E69 Temperature module error (malfunction)

42 ARGUS VCM Service Manual

Disassembly Guide

General Replacement Level Supported Prior to Disassembly Fuse Replacement Battery Replacement Monitor Disassembly

WARNING: Do not place ARGUS VCM into operation after repair or maintenance until Performance, Safety Tests and NIBP Calibration have been performed. Failure of these tests could result in erroneous readings.

WARNING: Electrical shock hazard. Disconnect the power cord from ARGUS VCM before attempting to open or disassemble ARGUS VCM.

CAUTION: Observe ESD (electrostatic discharge) precautions when working within the

unit.

Note: Some spare parts have a business reply card attached. When you receive these

spare parts, please fill out and return the card.

General

This section describes disassembly procedures detailed disassembly instructions and accompanied by illustrations. Disassembly Sequence Flow Chart that is used to access replaceable parts of represent the various components or sub-assemblies. A complete listing of the available spare parts and part numbers is in Spare Parts section. Follow the reverse sequence of the disassembly procedures for reassembly.

A RGUS VCM can be disassembled down to all major component parts, including:

listed in this service manual

ARGUS VCM is illustrated in Figure 6. The boxes on the flow chart

 PCB assemblies  acquisition modules  FND module  Printer  SMPS  Battery  Speaker  cables & wires  brackets & cases

The following tools are required:

 small, Phillips-head (+) screwdriver  medium, Phillips-head (+) screwdriver  5mm, Box wrench  10mm, Box wrench  0.35inch Spanner  needle-nose pliers

ARGUS VCM Service Manual 43

Disassembly Guide

ARGUS VCM

Front Case

Main Board

A1-1

Rubber Button

A1-2

SpO2Module

A1-3

FND Module

SpO2Connector Box

Overlay

NIBP Hose Connector

Rear Case

Battery Cover

B1-1

Battery

SMPS

B2-1

SMPS Hol der

B2-2

GND Br acket

NIBP Module

B3-1

NIBP Pump

Pri nter

Speaker

Handle

Serial C on nector

Temperature Case

Temperatu re Boar d

C1-1

Temperature Module

Temperatu re Po d

Figure 15. Disassembly Sequence Flow Chart

Replacement Level Supported

The replacement level supported for this product is to the printed circuit board (PCB) and major subassembly level. Once you isolate a suspected PCB, follow the procedures in Disassembly Guide, to replace the PCB with a known good PCB. Check to see if the trouble symptom persists, swap back the replacement PCB with the suspected malfunctioning PCB (the original PCB that was installed when you started trouble shooting) and continue troubleshooting as detected in this section.

GND Termi nal

44 ARGUS VCM Service Manual

ARGUS VCM

Prior to Disassembly

1. Turn

2. Disconnect the monitor from the AC power source

ARGUS VCM off by pressing the Power On/Off switch.

Fuse Replacement

1. After Step B2

2. Remove 1 battery fuse (F3: 250V/6.3A) out of the socket if required.

3. Replace (a) new fuse(s).

4. Reassembly the monitor.

Battery Replacement

This section describes the steps to remove the battery from without disassembling the main case of the monitor

B1. Battery disassembly

Disassembly Guide

, remove 2 AC main fuses (F1, F2: 250V/2A) out of the socket if required.

ARGUS VCM for replacement

5. Remove 4 small flat-head screws (S8094-0) fastening Battery cover.

6. Remove Battery cover.

7. Remove Battery carefully from the monitor.

8. Disconnect the wire between 2 Battery terminals.

Figure 16. Battery Disassembly

ARGUS VCM Service Manual 45

Disassembly Guide

Monitor Disassembly

This section describes the steps to separate the front and rear case assemblies.

ARGUS VCM

Figure 17. Monitor Disassembly

Table 11. Part Descriptions – Monitor Assembly

Part Codes Descriptions Qty

- Front case assembly (A) 1

- Rear case assembly (B) 1

- Temperature case assembly (C) 1

S8071-0 Screw 3 × 8 (tapping) 2

S8070-0 Screw 3 × 8 (flat-head) 3

S8091-0 Screw 3 × 12 3

S8092-0 Screw 3 × 16 2

Before the steps A, B and C

1. If Temperature option installed, remove 2 tapping screws (S8071-0) on the rear of the temperature case.

2. Disconnect Temperature wire to separate the temperature case from the rear case.

3. Remove 3 flat-head screws (S8070-0) on the bottom of the monitor.

4. Remove 5 screws (S8091-0, S8092-0) on the rear case.

5. Separate the front case from the rear case.

6. Carefully disconnect all cables running between cases: disconnect SMPS wire, NIBP cable, Printer wire, Speaker wire, Serial wire and NIBP hose.

46 ARGUS VCM Service Manual

ARGUS VCM

Front Case Disassembly (A)

This section describes the items that may be removed on the front case assembly.

Disassembly Guide

Figure 18. Front Case Disassembly

Table 12. Part Descriptions – Front Case Assembly

Part Codes Descriptions Qty

T0024-0 Front case 1 T1000-0 Rubber button vertical 1

T1001-0 Rubber button horizontal 1

- Main BD ass’y 1

S8007-0 Screw 3 × 6 3

A1. Main BD disassembly

1. Remove the marked 3-point screw (S8007-0) on the Main BD.

2. Separate Main BD from the front case assembly.

A1-1. Rubber Button disassembly

1. After step A1, remove 2 rubber buttons (T1000-0, T1001-0) from Main BD.

ARGUS VCM Service Manual 47

Disassembly Guide

ARGUS VCM

Figure 19. Main BD, SpO

2, FND modules Disassembly

Table 13. Part Descriptions – Main BD, SpO2, FND Modules Assembly

Part Codes Descriptions Qty

M4019-0 FND module 1

T0025-0 SpO2 connector box 1 P1028-0 Main BD 1

M0001-0 SpO2 module 1

S8007-0 Screw 3 × 6 8

S8010-0 Screw 2.5 × 6 (flat-head) 2

A1-2. SpO2 module disassembly

1. After step A1, remove 3 screws (S8007-0) holding SpO2 module.

2. Remove SpO2 module.

A1-3. FND module disassembly

1. After step A1, remove 5 screws (S8007-0) holding FND module.

2. Remove FND module.

A2. SpO2 connector box disassembly

1. After step A1, remove 2 flat-head screws (S8010-0).

2. Remove SpO2 connector box.

48 ARGUS VCM Service Manual

ARGUS VCM

Disassembly Guide

Figure 20. Front Case Disassembly – Overlay, NIBP cuff hose connector

Table 14. Part Descriptions – Overlay, NIBP Cuff Hose Connector

Part Codes Descriptions Qty

T0024-0 Front case 1

T8005-0 ~ T8012-0 Front overlay 1

T4104-0 NIBP cuff hose connector 1

A3. Overlay disassembly

1. After step A1, push out Overlay from the inside of the front case to remove.

2. Remove Overlay.

A4. NIBP cuff hose connector disassembly

1. After step A1, use a spanner to unfasten NIBP cuff hose connector.

2. Remove NIBP cuff hose connector.

ARGUS VCM Service Manual 49

Disassembly Guide

Rear Case Disassembly

This section describes the items that may be removed on the front case assembly.

ARGUS VCM

Figure 21. Rear Case Disassembly- Battery, SMPS

Table 15. Part Descriptions – Battery, SMPS Assembly

Part Codes Descriptions Qty

M2010-0 SMPS 1

T4108-0 GND bracket 1 T0029-0 SMPS holder 1

M6007-0 Lead acid battery 1

T4107-0 Battery cover 1

S8094-0 Screw 3 × 8 (small flat-head) 4

S8002-0 Screw 3 × 8 (with washer) 1

B2. SMPS disassembly

1. Remove 1 screw (S8002-0) located on the right top of SMPS.

2. Remove a nut holding GND bracket with 10mm box wrench

3. Pull out SMPS, and then separate SMPS holder from SMPS.

50 ARGUS VCM Service Manual

ARGUS VCM

Disassembly Guide

Figure 22. Rear Case Disassembly- NIBP module

Table 16. Part Descriptions – NIBP Module Assembly

Part Codes Descriptions Qty

M0005-0 NIBP module 1

S8007-0 Screw 3 × 6 4

S8070-0 Screw 3 × 8 (flat-head) 2

S8097-0 Nut M3 2

B3. NIBP module disassembly

1. Remove NIBP pump harness from the connector.

2. Remove 4 screws (S8007-0) holding NIBP module.

3. Remove NIBP module.

4. Remove 2 screws (S8070-0) and 2 nuts (S8097-0) fastening NIBP pump.

5. Remove NIBP pump.

ARGUS VCM Service Manual 51

Disassembly Guide

ARGUS VCM

Figure 23. Rear Case Disassembly- Printer

Table 17. Part Descriptions – Printer Assembly

Part Codes Descriptions Qty

M4020-0 Printer 1

S8090-0 Screw 3 × 8 3 (1)

S8093-0 Screw 3 × 25 0 (2)

* ( ) refers to the number of required screws if a print option is not installed in.

B4. Printer disassembly

1. Remove 1 screw (S8090-0) holding on the right top of Printer.

2. Remove 2 screws (S8090-0) on the front side of Printer.

* If no print option in, remove 2 screws (S8093-0) on the front side of Printer.

3. Open Printer door.

4. Pull out Printer to remove from the rear case assembly.

52 ARGUS VCM Service Manual

ARGUS VCM

Disassembly Guide

Figure 24. Rear Case Disassembly – Speaker, Handle, etc

Table 18. Part Descriptions – Speaker, Handle, etc Assembly

Part Codes Descriptions Qty

E9007-0 Speaker 1

T0027-0 Handle 1

S8066-0 Screw 3 × 5 (tapping) 2

S8096-0 Screw 3 × 25 (tapping) 2

B5. Speaker disassembly

1. After step B4, remove 2 screws (S8066-0) holding Speaker.

2. Remove Speaker.

B6. Handle disassembly

1. Remove 2 screws (S8096-0) fastening Handle.

2. Push Handle backward to separate from the rear case.

B7. Serial connector disassembly

1. Remove 2 nuts fastening Serial connector on the rear case with 5mm box wrench.

2. Remove Serial connector.

B8. GND terminal disassembly

1. After step B2, remove a nut holding GND terminal with 10mm box wrench.

2. Remove GND terminal.

ARGUS VCM Service Manual 53

Disassembly Guide

Temperature Case Disassembly

This section describes the items that may be removed on the temperature case assembly.

ARGUS VCM

Figure 25. Temperature Case Disassembly – Temperature Module

Table 19. Part Descriptions – Temperature Module Assembly

Part Codes Descriptions Qty

P1029-0 Temperature BD 1

M0006-0 Temperature module 1

S8007-0 Screw 3 × 6 2

S8071-0 Screw 3 ×8 (tapping) 4

C1.Temperature module disassembly

1. Remove 2 screws (S8007-0) holding Temperature module.

2. Remove Temperature module.

3. Disconnect Temperature wire.

4. Remove 4 screws (S8071-0) fastening Temperature BD.

5. Remove Temperature BD.

54 ARGUS VCM Service Manual

ARGUS VCM

Disassembly Guide

Figure 26. Temperature Case Disassembly

Table 20. Part Descriptions – Temperature Case Assembly

Part Codes Descriptions Qty

T0030-0 Temperature case 1

T0031-0 Temperature probe holder 1

S8090-0 Screw 3 × 8 2

S8002-0 Screw 3 × 8 (with washer) 1

C2. Temperature case disassembly

1. After step C1, remove 3 screws holding Temperature probe holder.

2. Remove Temperature probe holder from Temperature case.

ARGUS VCM Service Manual 55

Disassembly Guide

ARGUS VCM

Figure 27. ARGUS VCM Exploded View

56 ARGUS VCM Service Manual

Spare Parts

Introduction Obtaining Replacement Parts Parts List

WARNING: Follow local government ordinances and recycle instructions regarding disposal or recycling of device components, including batteries.

Introduction

Spare parts, along with part numbers, are shown in Table 21. “Item No.” corresponds to the circled callout numbers in Figure 8.

Obtaining Replacement Parts

Schiller Technical Service provides technical assistance information and replacement parts. To obtain replacement parts, contact Schiller. Refer to parts by the part names and part numbers.

ARGUS VCM Service Manual 57

Spare Parts

Parts List

ARGUS VCM

Schiller Technical Service provides technical assistance information and replacement parts. To obtain replacement parts, contact Schiller. Refer to parts by part numbers and part names.

Figure 28. ARGUS VCM Exploded View – Spare Parts

58 ARGUS VCM Service Manual

ARGUS VCM

Spare Parts

Table 21. ARGUS VCM Parts List

No. Part Code Item

Cases

1 T0024-0 Front case

2 T0025-0 SpO2 connector box

3 T0026-0 Rear case

4 T0027-0 Handle

5 T0029-0 SMPS holder

6 T0030-0 Temperature case

7 T0031-0 Temperature probe holder

Structure Components

8 T8005-0 Front overlay / NST

8 T8006-0 Front overlay / NSTP

8 T8007-0 Front overlay / NS

8 T8008-0 Front overlay / NSP

8 T8009-0 Front overlay / NT

8 T8010-0 Front overlay / NTP

8 T8011-0 Front overlay / N

8 T8012-0 Front overlay / NP

9 T1000-0 Rubber button vertical

10 T1001-0 Rubber button horizontal

11 T4104-0 NIBP cuff hose connector

12 T1005-0 Rubber foot circular

13 T1006-0 Rubber foot oval

14 T1007-0 Temperature connector cover

15 T4107-0 Battery cover

16 GND terminal

17 T4108-0 GND bracket

Electrical Components

18 P1028-0 Main BD

19 P1029-0 Temperature BD

20 M2010-0 SMPS

21 M4019-0 FND module

22 M0005-0 NIBP module

23 M0001-0 SpO2 module

24 M0006-0 Temperature module

25 M4020-0 Printer

26 M6007-0 Lead acid battery

27 E9007-0 Speaker

Harness

- W0107-0 SMPS wire / 8-pin

- W0108-0 Battery wire / 5-pin

- W0109-0 NIBP cable / 24-pin

T4003-0

ARGUS VCM Service Manual 59

Spare Parts

ARGUS VCM

No. Part Code Item

- W0110-0 Serial wire / 9-pin

- W0111-0 Temperature wire / 5-pin

- W0112-0 Printer wire / 6-pin

Screws / Spacers

- S8007-0 Screw 3 × 6

- S8090-0 Screw 3 × 8

- S8002-0 Screw 3 × 8 (with washer)

- S8091-0 Screw 3 × 12

- S8092-0 Screw 3 × 16

- S8093-0 Screw 3 × 25

- S8010-0 Screw 2.5 × 6 (flat-head)

- S8070-0 Screw 3 × 8 (flat-head)

- S8094-0 Screw 3 × 8 (small flat-head)

- S8066-0 Screw W 3 × 5 (tapping)

- S8071-0 Screw 3 × 8 (tapping)

- S8096-0 Screw 3 × 25 (tapping)

- S8097-0 Nut M3

60 ARGUS VCM Service Manual

Packing For Shipment

General Instructions Returning the ARGUS VCM Repacking In Original Carton Repacking In a Different Carton

General Instructions

To ship the monitor for any reason, follow the instructions in this section.

Pack the monitor carefully. Failure to follow the instructions in this section may result in loss or damage not covered by the Schiller warranty. If the original shipping carton is not available, use another suitable carton; North American customers may call Schiller Technical Services to obtain a shipping carton. Prior to shipping the monitor, contact your supplier or the Schiller office (Technical Services Department) for a returned goods authorization (RGA) number. Mark the shipping carton and any shipping documents with the returned goods authorization number.

Pack to shipping the monitor, contact your supplier or the Schiller office (Technical Services Department) for a returned goods authorization number. Mark the shipping carton and any shipping documents with the returned goods authorization (RGA) number. Return

Returning the ARGUS VCM

Contact Schiller Technical Services Department for shipping instructions, including a Returned Goods Authorization (RGA) number. Unless otherwise instructed by Schiller Technical Services Department, it is not necessary to return other accessory items with the monitor. Pack not available, use a suitable carton with appropriate packing material to protect it during shipping.

Repacking In Original Carton

If available, use the original carton and packing materials. Pack the monitor as follows:

1. Place the monitor and, if necessary, accessory items in original packaging.

ARGUS VCM by any method that provides proof of delivery.

ARGUS VCM in its original shipping carton. If the original carton is

2. Place in shipping carton and seal carton with packaging tape.

3. Label carton with shipping address, return address and RGA number, if applicable.

ARGUS VCM Service Manual 61

Packing For Shipment

Repacking In a Different Carton

If the original carton is not available, use the following procedure to pack

1. Place the monitor in a plastic bag.

2. Locate a corrugated cardboard shipping carton with at least 200 pounds per square inch (psi) bursting strength.

3. Fill the bottom of the carton with at least 2 inches of packing material.

4. Place the bagged unit on the layer of packing material and fill the box completely with packing material.

5. Seal the carton with packing tape.

6. Label the carton with the shipping address, return address, and RGA number, if applicable.

ARGUS VCM

ARGUS VCM:

62 ARGUS VCM Service Manual

System Processing Description

System Overview NIBP Processing SpO2 Processing Temperature Processing

System Overview

System Block Diagram

MAIN BOARD

TEMPERATURE BOARD

Isolated Area

DC/DC

Temperature

Module

Patient

Connec tor

SMPS /

Battery Charger

+12V

Display Driver

Slave MCU

Temperature

Connec tor

Power R egulat ors

(+3.3V / +5V)

Power C onnec tor

DATA

NIBP C onnector

NIBP Module

NIBP Pump

DAT A

Button Interface

Main MCU

A T A D

Sound Driver

Speaker

Connec tor

Speaker

DC/DC

DAT

DC/DC

DAT

DAT A

Printer Connec tor

Printer

Isolated Area

NurseCall

SpO2Module

Patient

Connec tor

RS232 Driver

Relay

Serial C onnec tor

Figure 29. ARGUS VCM System Block Diagram

ARGUS VCM monitor is a multi-function the monitor for use on adult, pediatric and

neonatal patients; non-invasive blood pressures, arterial oxygen saturation, pulse rate, and temperature.

ARGUS VCM Service Manual 63

System Processing Description

In addition to the monitoring and displaying the status of these physiological parameters, the instrument performs various microprocessor-programmed analytical functions;

 Creating both visual and audible alarm signals when settable limits are violated;  Creating and displaying error codes when conditions are detected that would degrade

or prevent valid measurements;

 Creating and reviewing saved data/event;  Providing input to an optional recorder for printout of data.

The monitor is essentially a battery-powered instrument. An internal charging unit is designed to accept only an AC line voltage.

Unit Description

SMPS

The ARGUS VCM allows the user to connect the monitor to AC power ranging from 100 volts AC to 240 volts AC. AC power enters directly the ARGUS VCM’s Power Supply. A 2amp fuse protects both the “Line” and “Neutral” lines. These user-non-accessible fuses are located on a fuse socket, which is part of the Power Supply located in the ARGUS VCM. The ARGUS VCM uses a switch mode power supply (SMPS). This Power Supply provides the DC power needed to charge the battery and to power the Main Board. The output of the transformer varies, depending on load and input. High frequency noise from the AC line and from the Main Board is filtered before passing through the bridge rectifier. The bridge rectifier provides the DC power used in the ARGUS VCM. The positive output is 12 volts DC.

Battery Charger

The power supply will charge the battery any time ARGUS VCM is connected to AC power even if the monitor is not turned on. The voltage applied to the battery is 7.5 ± 0.3 volts DC.

Battery

A lead-acid battery is used in the ARGUS VCM. It is rated at 6 volts DC, 4 amp hours. When new and fully charged, the battery will operate the monitor for 2 hours. A new battery will last 10 minutes from the time the low battery alarm is declared until the unit is shut down due to battery depletion. Recharging the battery to full capacity takes 12 hours. Changing from AC to battery power does not interrupt the normal monitoring operation of the ARGUS VCM.

Power Regulator

The Power Regulator receives the inputs from the SMPS, the Battery, and generates an appropriate power rate.

Main MCU

The Main MCU is the heart of the ARGUS VCM. The MCU is a Rabbit 3000. Rabbit 3000 manages each modules to generate signal outputs from data received on the base of the internal algorithm. The MCU controls sound generation, button check and SMPS operation. The Rabbit 3000 also communicates with NIBP Module, SpO Temperature Module, Printer, Display driver and Personal Computer.

ARGUS VCM

2 Module,

64 ARGUS VCM Service Manual

ARGUS VCM

System Processing Description

Slave MCU

Slave MCU is Toshiba TMP86PM47U. Slave MCU is mainly used for display driver. Slave MCU checks on Battery voltage level to transfer the level to Main MCU, and also it controls SMPS function during Firmware downloading mode.

Button Interface

10 buttons including Power button interfaces Main board directly. Button access controls the monitor functions including power on/off, operating mode transition, alarm limit adjustment, alarm silence function, and etc.

Display Driver

Front panel display provides visual patient data and monitor status. At power up, all indicators are illuminated to allow verification of their proper operation. Display consists of FND Module. FND module is integrated with Display Drive IC, GM6486. FND module is able to display red, amber and/or green. 7-segments display patient measurement data, time and/or values. Pulse amplitude indicator displays in the format of 8-segments. The pulse amplitude indicator illuminates with each pulse beat. The number of segments illuminated indicates the relative signal strength of the pulse beat. Indicators are also located on the front panel display. Indicators are illuminated indicating a function that is active. Functions indicated by the Indicators are AC/battery status, alarm silence, patient type, NIBP & temperature unit and print mode.

Sound Driver

Sound frequency generated from Main MCU is transferred to output to the Speaker via LM386 audio amplifier. The gain of this amplifier changes sound level of volume as a resistor is adjusted.

NIBP Patient block

NIBP patient block measures NIBP data interfaced with WelchAllyn NIBP module POEM. More information about NIBP measurement theory is specified in NIBP Processing.

SpO

2 Patient block

SpO2 patient block measures oxygen saturation data and pulse rate interfaced with Nellcor Oximetry module MP-506. More information about Oximetry theory is specified in SpO

2 Processing.

Temperature Patient block

Temperature patient block measures Temperature data. interfaced with WelchAllyn Temperature module SureTemp. More information about Temperature measurement theory is specified in Temperature Processing.

ARGUS VCM Service Manual 65

System Processing Description

NIBP Processing

Overview

The oscillometric technique does not use Korotkoff sounds to determine blood pressure. The oscillometric technique monitors the changes in cuff pressure caused by the flow of blood through the artery. The monitor inflates the cuff to a pressure that occludes the artery. Even when the artery is occluded, the pumping of the heart against the artery can cause small pressure pulses in the cuff baseline pressure. The monitor lowers cuff pressure at a controlled rate. As the cuff pressure goes down, blood starts to flow through the artery. The increasing blood flow causes the amplitude of the pressure pulses in the cuff to increase. These pressure pulses continue to increase in amplitude with decreasing cuff pressure until they reach a maximum amplitude at which point they begin to decrease with decreasing cuff pressure. The cuff pressure at which the pulse amplitude is the greatest is known as Mean Arterial Pressure(MAP). The manner in which the pulse amplitudes vary is often referred to as the pulse envelope. The envelope is an imaginary line that connects the peak of each pressure pulse and forms an outline. The shape of the envelope is observed by the monitor using a variety of techniques to determine the diastolic and systolic blood pressure.

ARGUS VCM

MAP

Distole

Systole

MAP

Distole

Overall Accuracy Discussion

Overall system accuracy shall be determined by considering various influences of the pressure sensor accuracy, motion artifacts and other artifact created by pressure valve, technical errors of electrical components, and the origin error of oscillometric method. The origin error of oscillometric comes from the basic theory of that the MAP is determined by the pulse. Therefore, there might be an error of the time between two pulses. In another words, the greatest amplitude point of pulses could not represent the MAP point exactly.

TIME

Systole

MAP

Distole

● Oscillometric Response

(Pressure Pulses)

● Cuff Pressure

66 ARGUS VCM Service Manual

ARGUS VCM

System Processing Description

On clinical trial perspective, overall system accuracy is not easy to be determined. The clinical trial test protocols have been tried and have been described in many treatises, and international standards. So, there are many methods to determine the overall system accuracy of Automated Sphygmomanometer using the oscillometric method. But, there are no absolute test protocols to determine the overall system accuracy of the Automated Sphygmomanometer using oscillometric method. Normally, the Gold standards of Blood pressure for the reference are the intra-arterial pressure and the auscultatory method.

The popular standard for the overall system accuracy is AAMI, SP-10 1992; 1996 (Electronic or automated sphygmomanometers). The main test conditions are as follow: A. Data comparing the Intra-arterial or the auscultatory by the clinical experts with

the automated sphygmomanometer. B. For data collection and the data analysis, Bland-Altman Plot is used. C. On the systolic, diastolic, and MAP, the Deltas of all measurements shall be met

under +/- 5mmHg of mean difference (MD), and +/- 8mmHg of standard deviation

(SD). (Delta = Intra-arterial or Auscultatory – Automated sphygmomanometer)

SYSTOLIC PRESSURE

Mean difference(MD): 0 mmHg

-5

-10

-15

Diff ere nce betwee n t est and ref ere nce metho ds (m mHg)

-20

(EXAMPLE) Agreement between test and reference methods for systolic pressure. Hypothetical data

Standard deviation(SD): 6 mmHg

mean + 2 SD

mean

mean - 2 SD

200180160140120100

Average of test and reference methods (mm Hg)

ARGUS VCM Service Manual 67

System Processing Description

SpO2 Processing

Overview

Pulse oximetry works by applying a sensor to a pulsating arteriolar vascular bed. The sensor contains a dual light source and photodetector. Bone, tissue, pigmentation, and venous vessels normally absorb a constant amount of light over time. The arteriolar bed normally pulsates and absorbs variable amounts of light during systole and diastole, as blood volume increases and decreases. The ratio of light absorbed at systole and diastole is translated into an oxygen saturation measurement (SpO SpO

2 is dependent upon light from the sensor, excessive ambient light can interfere with

this measurement.

Pulse oximetry is based on two principles: that oxyhemoglobin and deoxyhemoglobin differ in their absorption of red and infrared light (spectrophotometry), and that the volume of arterial blood in tissue (and hence, light absorption by that blood) changes during the pulse (plethysmography). The monitor determines SpO infrared light into an arteriolar bed and measuring changes in light absorption during the pulsatile cycle. Red and infrared low-voltage light-emitting diodes (LED) in the oximetry detector. Because oxyhemoglobin and deoxyhemoglobin differ in light absorption, the amount of red and infrared light absorbed by blood is related to hemoglobin oxygen saturation. To identify the oxygen saturation of arterial hemoglobin, the monitor uses the pulsatile nature of arterial flow. During systole, a new pulse of arterial blood enters the vascular bed, and blood volume and light absorption increase. During diastole, blood volume and light absorption reach their lowest point. The monitor bases its SpO measurements on the difference between maximum and minimum absorption (measurements at systole and diastole). By doing so, it focuses on light absorption by pulsatile arterial blood, eliminating the effects of nonpulsatile absorbers such as tissue, bone, and venous blood.

Automatic Calibration

Because light absorption by hemoglobin is wavelength dependent and because the mean wavelength of LEDs varies, an oximeter must know the mean wavelength of the OXIMAX sensor’s red LED to accurately measure SpO instrument’s software selects coefficients that are appropriate for the wavelength of that individual sensor’s red LED; these coefficients are then used to determine SpO Additionally, to compensate for differences in tissue thickness, the light intensity of the sensor’s LEDs is adjusted automatically.

Measured versus Calculated Saturation

The measured SpO calculated from a blood gas partial pressure of oxygen (P because the calculated saturation was not appropriately corrected for the effects of variables that shift the relationship between P partial pressure of carbon dioxide (PC

OXIMAX sensor serve as light sources; a photo diode serves as the photo

2 value from an oximeter may differ from the saturation value that is

ARGUS VCM

2). Because a measurement of

2 by passing red and

2. During the monitoring, the

O2). This usually occurs

O2 and saturation: pH, temperature,

O2), 2, 3-DPG, and fetal hemoglobin.

68 ARGUS VCM Service Manual

ARGUS VCM

System Processing Description

100

Saturation (%)

Functional versus Fractional Saturation

This monitor measures functional saturation — oxygenated hemoglobin expressed as a percentage of the hemoglobin that can transport oxygen. It does not detect significant amounts of dysfunctional hemoglobin, such as carboxyhemoglobin or methemoglobin. In contrast, hemoximeters such as the IL482 report fractional saturation — oxygenated hemoglobin expressed as a percentage of all measured hemoglobin, including measured dysfunctional hemoglobin. To compare functional saturation measurements to those from an instrument that measures fractional saturation, fractional measurements must be converted as follows:

functional saturation = fractional saturation 100 – (%carboxyhemoglobin + %methemoglobin)

pH Temperature PCO2 2,3-DPG Fetal Hb

pH Temperature PCO2 2,3-DPG

50 100

PO2 (mmHg)

Oxyhemoglobin Dissociation Curve

× 100

ARGUS VCM Service Manual 69

System Processing Description

Temperature Processing

Overview

Patient temperature can be measured via an oral/axillary, rectal, or skin surface probe. A predictive algorithm in conjunction with the thermistor based thermometer is used for fast temperature or monitoring temperature.

Predictive temperature

Thermometers that render a temperature reading before steady state is achieved are classified as predictive thermometers. Predictive thermometers reduce the time required for measurement by using algorithms to “predict” what the temperature would be if the probe were left in place until steady state is achieved.

Monitor temperature

A function or mode of an electronic thermometer used to continuously monitor temperature until it reached the thermal steady state (unchanging). The thermal steady state is achieved orally in approximately 3 minutes, and axillary in approximately five minutes.

Measuring Principle

The ARGUS VCM temperature probe utilizes a negative temperature coefficient (NTC) thermistor and control circuitry in combination with the temperature module’s predictive algorithm to calculate patient temperatures. NTC thermistors have a large temperature coefficient of resistance and change in resistance as temperature changes. This predictable change in resistance is the basis for predictive thermometry. The Oral/axillary probe is pre-warmed to approximately 34℃ (94℉). The probe warming process is a closed loop feedback control system incorporating pulse width modulation (PWM) control. The probe warmer circuitry is used to heat the probe tip prior to taking a temperature reading in order to speed the convergence of the prediction algorithm. A fail safe hardware shut off circuit is included to ensure the heater will shut down in the event of a software failure.

 When the probe is first extracted and colder than 33.9℃, the heater pulse

widths are at a maximum percentage On vs Off to warm the probe quickly.

 When the probe reached 33.9℃, the pulse widths narrow to a duty cycle just

enough to maintain temperature.

 When the probe is placed in the mouth, the heat supplied by the mouth makes

the pulse widths reduce to zero. This reduction to zero (and probe being at least up to 33.1 (9℃ 1.6 )℉ triggers the start of the prediction algorithm.

The shape of the rising temperature curve is monitored and the best fit to a curve is found. When the curve fit is stable, the final predicted temperature is provided.

ARGUS VCM

70 ARGUS VCM Service Manual

Sales and Service information

The SCHILLER sales and service centre network is worldwide. For the address of your local distributor, contact your nearest SCHILLER subsidiary. In case of difficulty a complete list of all distributors and subsidiaries is provided on our internet site: http://www.schiller.ch

Sales information can also be obtained from:

Sales@schiller.ch

Argus VCM produced by

Mediana Co.,Ltd.

Adress Headquarter

CHILLER AG Phone: +41 (0)41 766 42 42

Algasse 68 Fax: +41 (0)41 761 08 80,

CH-6341 Baar, Switzerland e-mail: sales@schiller.ch

Web: www.schiller.ch

Article Number 2.540041 Rev. a Issue Date: 10. September 2004

Headquarters: SCHILLER AG, Altgasse 68, CH-6341 Baar, Switzerland, Phone: +41 (0)41 766 42 42, Fax: +41 (0)41 761 08 80, e-mail: sales@schiller.ch

REF: A7055-0

Schiller Argus VCM Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual