Mindray Datascope Accutorr V User manual
Service Manual
Accutorr® is a registered trademark of Mindray DS USA, Inc.
Copyright © Mindray DS USA, Inc., 2009. Printed in U.S.A. All rights reserved. Contents of this publication may not be
reproduced in any form without permission of Mindray DS USA, Inc.
Masimo SET
®
Mindray
®
Nellcor
is a U.S. registered trademark of Tyco International Ltd.
SmarTemp
®
is a U.S. registered trademark of Masimo Corp.
is a trademark or a registered trademark of Shenzhen Mindray Bio-Medical Electronics Co., Ltd.
™
is a trademark of Shenzhen Mindray Bio-Medical Electronics Co., Ltd.
Accutorr V Service Manual 0070-10-0702
Tabl e of C on te nt s
Preface..........................................................................................................................................................v
Warnings, Cautions, and Notes .......................................................................................................................vii
Warnings ......................................................................................................................................................vii
Cautions ........................................................................................................................................................ viii
Notes ............................................................................................................................................................ x
Safety Designations......................................................................................................................................... x
Product Limitations ..........................................................................................................................................xi
Unpacking ..................................................................................................................................................... xi
Symbols and Descriptions ................................................................................................................................ xii
Theory of Operation ......................................................................................................... 1 - 1
Introduction.................................................................................................................................................... 1 - 2
Controls and Indicators....................................................................................................................................1 - 2
System Overview ............................................................................................................................................1 - 2
Hardware Structure.........................................................................................................................................1 - 4
Main Board ............................................................................................................................................ 1 - 5
Power Board........................................................................................................................................... 1 - 6
Key and Displays Board ...........................................................................................................................1 - 7
Parameter Boards ....................................................................................................................................1 - 8
Module .................................................................................................................................1 - 8
SpO
2
NIBP Module .................................................................................................................................. 1 - 9
Optional Temperature Module .......................................................................................................... 1 - 9
Recorder ................................................................................................................................................1 - 10
Bar Code Scanner ................................................................................................................................... 1 - 11
Specifications.................................................................................................................... 2 - 1
Introduction.................................................................................................................................................... 2 - 2
NIBP Measurement .........................................................................................................................................2 - 2
Blood Pressure ........................................................................................................................................2 - 2
Static Accuracy ....................................................................................................................................... 2 - 2
Maximum Cuff Pressure ............................................................................................................................2 - 2
Cuff Inflation ........................................................................................................................................... 2 - 3
Maximum Leakage ..................................................................................................................................2 - 3
Deflation Rate .........................................................................................................................................2 - 3
Update Period.........................................................................................................................................2 - 3
Initial NIBP Pressure Setup and Range........................................................................................................2 - 3
NIBP Measurement Cycle................................................................................................................................. 2 - 4
Cuff Inflation Time.................................................................................................................................... 2 - 4
Cuff Pressure Automatic Check Algorithm ...........................................................................................2 - 4
Automatically Adjusted Inflation Value after First Measurement...................................................................... 2 - 5
Pulse Rate............................................................................................................................................... 2 - 5
Measurement ........................................................................................................................................2 - 6
SpO
2
DPM SpO2 Module Performance............................................................................................................... 2 - 6
SpO2 ............................................................................................................................................ 2 - 6
Pulse Rate ....................................................................................................................................... 2 - 6
Alarm setting range .........................................................................................................................2 - 6
Masimo MS-2013 SpO
.............................................................................................................................................2 - 7
SpO
2
Pulse Rate ....................................................................................................................................... 2 - 8
Alarm Setting Range ........................................................................................................................ 2 - 8
Nellcor NELL-3 SpO
SpO2 ............................................................................................................................................ 2 - 9
Pulse Rate ....................................................................................................................................... 2 - 9
Alarm Setting Range ........................................................................................................................ 2 - 9
Performance........................................................................................................ 2 - 7
2
Performance............................................................................................................. 2 - 9
2
Accutorr V Service Manual 0070-10-0702 i
Tabl e of C on te nts
Temperature...................................................................................................................................................2 - 10
Display Area, Indicator, and Controller .............................................................................................................2 - 10
Display Area...........................................................................................................................................2 - 10
LCD ...............................................................................................................................................2 - 10
7-Segment Digit Display ...................................................................................................................2 - 10
Monochrome LED Indicator ............................................................................................................... 2 - 10
Power Indicator ...............................................................................................................................2 - 11
Overlay and labeling............................................................................................................................... 2 - 11
Alarm Lamp ............................................................................................................................................ 2 - 11
Keys ......................................................................................................................................................2 - 12
Patient Cable Connectors .........................................................................................................................2 - 13
Audio Indicator .............................................................................................................................................. 2 - 13
Pulse Tone Function.................................................................................................................................. 2 - 13
Multiple-Level Volume............................................................................................................................... 2 - 13
Real-time Clock............................................................................................................................................... 2 - 13
Standby Mode ............................................................................................................................................... 2 - 14
Alarm Information ........................................................................................................................................... 2 - 15
Basics ....................................................................................................................................................2 - 15
Alarm Notification ................................................................................................................................... 2 - 15
Audio Alarm Pause, Audio Alarm Off, and Audio Alarm Silencing ................................................................ 2 - 15
Configuration management.............................................................................................................................. 2 - 15
Barcode scanner.............................................................................................................................................2 - 15
Troubleshooting................................................................................................................ 3-1
Introduction.................................................................................................................................................... 3 - 2
Part Replacement ............................................................................................................................................ 3 - 2
Monitor Status Check ......................................................................................................................................3 - 2
Technical Alarm Check ....................................................................................................................................3 - 3
Troubleshooting Guide ....................................................................................................................................3 - 4
Power On/Off Failures ............................................................................................................................3 - 4
Display Failure ........................................................................................................................................ 3 - 4
LED Digital Display and Indication Lamp Failure ..........................................................................................3 - 4
Alarm Problems ......................................................................................................................................3 - 5
Key Failure ............................................................................................................................................3 - 5
Recorder Failures.....................................................................................................................................3 - 6
Interface Failures ....................................................................................................................................3 - 6
Power Supply Failures ..............................................................................................................................3 - 6
Network Related Problems .......................................................................................................................3 - 7
Software Upgrade Problems ....................................................................................................................3 - 8
Bar Code Scanner Failures .......................................................................................................................3 - 8
NIBP Measurement Failures ......................................................................................................................3 - 9
Measurement Failure ...................................................................................................................... 3 - 9
SpO
2
Temperature Measurement Failures ...........................................................................................................3 - 9
Repair and Disassembly ................................................................................................... 4 - 1
Tools ............................................................................................................................................................. 4 - 2
Preparation for Disassembly ............................................................................................................................. 4 - 2
Disassembly .................................................................................................................................................. 4 - 3
Separating the Front and Rear Halves of the Monitor ..................................................................................4 - 3
Disassembling the Front Housing Assembly ................................................................................................4 - 6
Removing the Main Rack Assembly............................................................................................................ 4 - 8
Removing NIBP Module ...........................................................................................................................4 - 11
Removing the Main (CPU) Board ..............................................................................................................4 - 12
Removing the Power Board.......................................................................................................................4 - 13
ii 0070-10-0702 Accutorr V Service Manual
Tabl e of C on te nt s
Removing the Battery Connector Assembly..................................................................................................4 - 13
Removing the Fan and Speaker .................................................................................................................4 - 14
Removing the Power Socket .....................................................................................................................4 - 15
Disassembling the Temperature Module......................................................................................................4 - 16
Disassembling SpO
Disassembling a DPM SpO
Disassembling a Masimo SpO
Disassembling a Nellcor SpO
Modules................................................................................................................... 4 - 17
2
module ..................................................................................................4 - 17
2
module ............................................................................................. 4 - 17
2
module ..............................................................................................4 - 18
2
Disassembling the NIBP Module ................................................................................................................4 - 19
Removing the NIBP Pump ................................................................................................................. 4 - 19
Removing the NIBP Dump Valve ........................................................................................................ 4 - 19
Removing the NIBP Bleed Valve ........................................................................................................ 4 - 20
Parts ................................................................................................................................5 - 1
Main Assembly...............................................................................................................................................5 - 2
Front Assembly ............................................................................................................................................... 5 - 3
Rear Housing Assembly ................................................................................................................................... 5 - 7
Main Bracket Assembly ...................................................................................................................................5 - 8
NIBP Assembly (Pump M6Q-100003- - -) ........................................................................................................... 5 - 10
NIBP Assembly (Pump 082-000056-00) ............................................................................................................5 - 13
Temperature Module Subassembly ....................................................................................................................5 - 16
Temperature Power Module Subassembly ..........................................................................................................5 - 18
Test and Calibration.......................................................................................................... 6 -1
Introduction.................................................................................................................................................... 6 - 2
Test Report..............................................................................................................................................6 - 3
Recommended Frequency .........................................................................................................................6 - 3
Visual Test...................................................................................................................................................... 6 - 4
Power-on Test ................................................................................................................................................. 6 - 4
NIBP Calibration............................................................................................................................................. 6 - 4
NIBP Accuracy Test......................................................................................................................................... 6 - 8
NIBP Leakage Test ...................................................................................................................................6 - 9
Test......................................................................................................................................................6 - 12
SpO
2
Test Under Normal Conditions .........................................................................................................6 - 12
SpO
2
Test in Motion Mode....................................................................................................................... 6 - 12
SpO
2
Summary of Test Methods.........................................................................................................................6 - 13
DPM SpO
Nellcor SpO
Masimo SpO
Testing the Optional Temperature Module.......................................................................................................... 6 - 14
Nurse Call Performance Test ............................................................................................................................6 - 16
Bar Code Scanner Test ....................................................................................................................................6 - 18
Electrical Safety Tests ...................................................................................................................................... 6 - 20
Enclosure Leakage Current Test .................................................................................................................6 - 20
Earth Leakage Current Test .......................................................................................................................6 - 20
Patient Leakage Current Test .....................................................................................................................6 - 21
Patient Auxiliary Leakage Current Test........................................................................................................ 6 - 21
Recorder Check ..............................................................................................................................................6 - 22
Software upgrade...........................................................................................................................................6 - 23
..................................................................................................................................... 6 - 13
2
................................................................................................................................. 6 - 13
2
................................................................................................................................. 6 - 13
2
Accutorr V Service Manual 0070-10-0702 iii
Tabl e of C on te nts
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iv 0070-10-0702 Accutorr V Service Manual
Preface Introduction
Preface
This manual provides detailed information about the assembling, disassembling, testing, and
troubleshooting of the equipment to support effective troubleshooting and repair. It is not
intended to be a comprehensive, in-depth explanation of the product architecture or technical
implementation. Observance of the manual is a prerequisite for proper equipment
maintenance and prevents equipment damage and personnel injury.
Refer to the Accutorr V Operating Instructions: P/N 0070-00-0699-XX for information for
operating this instrument.
This manual is based on the maximum configuration. Therefore, some contents may not be
applicable. For questions, contact Service.
This manual is for biomedical engineers, authorized technicians, or service representatives
responsible for troubleshooting, repairing, and maintaining the monitors.
Contents of this manual are subject to change without prior notice.
A password is required to access the service mode. The service password is 321.
The Accutorr V configurations are:
• Accutorr V with Nellcor® Pulse Oximetry—
includes NIBP, Nellcor SpO
• Accutorr V with Nellcor
includes NIBP, Nellcor SpO
a Trend Display, and Recorder
2,
®
Pulse Oximetry and SmarTemp™—
SmarTemp, a Trend Display, and Recorder
2,
• Accutorr V with Masimo SET® Pulse Oximetry—
includes NIBP, Masimo SpO2, a Trend Display, and Recorder
• Accutorr V with Masimo SET® Pulse Oximetry and SmarTemp™—
includes NIBP, Masimo SpO2, SmarTemp, a Trend Display, and Recorder
• Accutorr V with DPM Pulse Oximetry—
includes NIBP, DPM SpO2, a Liquid Crystal Display (LCD), and Recorder
• Accutorr V with DPM Pulse Oximetry and SmarTemp™—
includes NIBP, DPM SpO
SmarTemp, a Liquid Crystal Display (LCD), and Recorder
2,
All Accutorr V configurations can be upgraded with a barcode scanner.
Masimo Patents: This device (MASIMO SpO2 Module) is covered under one or more of the
following U.S. Patents 5,758,644, 5,823,950, 6,011,986, 6,157,850, 6,263,222,
6,501,975, and other applicable patents listed at: www.masimo.com/patents.htm.
Possession or purchase of this device does not convey any express or implied license to use
the device with replacement parts which would, alone, or in combination with this device,
fall within the scope of one or more of the patents relating to this device.
Accutorr V Service Manual 0070-10-0702 v
Introduction Preface
Nellcor Patents: This device (Nellcor SpO2 Module) is covered under one or more of the
following U.S. Patents Patent No. 5,485,847, 5,676,141, 5,743,263, 6,035,223,
6,226,539, 6,411,833, 6,463,310, 6,591,123, 6,708,049, 7,016,715, 7,039,538,
7,120,479, 7,120,480, 7,142,142, 7,162,288, 7,190,985, 7,194,293, 7,209,774,
7,400,919, and 7,212,847. Possession or purchase of this device does not convey any
express or implied license to use the device with replacement parts which would, alone, or in
combination with this device, fall within the scope of one or more of the patents relating to
this device.
vi 0070-10-0702 Accutorr V Service Manual
War nin gs, Ca uti ons , and Note s Introduction
Warnings, Cautions, and Notes
Read and adhere to all of the warnings and cautions listed throughout this manual.
A WARNING is provided to alert the user to potentially serious outcomes (death, injury or
serious adverse events) to the patient or the user.
A CAUTION is provided to alert the user that special care should be taken for the safe and
effective use of the device. They will include actions to be taken to avoid effects on patients
or users that will not be potentially life threatening or result in serious injury, but about which
the user should be aware.
A NOTE is provided when additional general information is available.
Warnings
WAR N I N G : I n t e r n al Electrical Sh o c k H azard - This unit does not contain
any user-serviceable parts. Do not remove instrument
covers. Refer servicing to qualified personnel. When the
integrity of the protective earth conductor, in the installation
or its arrangement, is in doubt, the equipment should be
operated from its internal battery. Observe all CAUTION and
WAR N I N G l a b e ls on the unit.
WAR N I N G : P o s s i ble explosion haz a r d . Do not operate m a c h i ne near
flammable anesthetic agents or other flammable
substances. Do not use flammable anesthetic agents (i.e.,
ether or cyclopropane.)
WAR N I N G : A l w ays place the u n i t o n a flat, rigid surface or onto a
WAR N I N G : To e n s u r e proper p e r fo r m an ce and safety an d t o p revent
WAR N I N G : U s e only cu f f s with ap p roved quick connect type connectors.
WAR N I N G : T h e A c c utorr V is not i n t e n d e d for use in a m a g n e t i c
WAR N I N G : D a n g e r of explosion i f battery is incorrectly replaced.
WAR N I N G : D o n o t u s e a damaged or broken unit or accessory.
Mindray approved stable mounting bracket.
the voiding of the warranty, only use authorized parts and
accessories with the Accutorr V. Use of unauthorized
accessories may result in erroneous readings.
resonance imaging (MRI) environment and may interfere
with MRI procedures.
Replace only with the same or equivalent type
recommended by the manufacturer. Dispose of used
batteries according to the manufacturers instructions and
local regulations. Batteries used in this de vice may present a
risk of fire or chemical burn if mistreated. Do not incinerate
battery, possible explosion may occur.
WAR N I N G : O p e r a tion of the A cc u torr V below the m i n i m um amplitude
or value of patient physiological signal may cause
inaccurate results.
Accutorr V Service Manual 0070-10-0702 vii
Introduction Cautions
WAR N I N G : U s e of a c cessories, transducers, and cables other than those
WAR N I N G : P e r f o r m t h e decontaminat i o n o r cleaning pro c ess with the
WAR N I N G : E l e c t ri cal safety tes t s a re a proven means of verifying the
WAR N I N G : C o m m e rcially availab l e t e s t equipment such as a safety
WAR N I N G : E l e c t ri cal safety tes t s s h ould meet the r e q u i r ements of the
WAR N I N G : T h e s e electrical saf e t y t ests do not su p e r s e d e local
WAR N I N G : A l l d evices using the A C m a i n s and connected t o medical
specified in the manual may result in increased
Electromagnetic Emissions or decreased Electromagnetic
Immunity of the Accutorr V. It can also cause delayed
recovery after the discharge of a cardiac defibrillator.
unit powered down and power cord removed.
electrical safety of the monitor. They are intended for
determining potential electrical hazards. Failure to identify
these hazards in a timely manner may cause personnel
injury.
analyzer can be used for electrical safety tests. Verify that
the test equipment can be safely and reliably used with the
monitor before use. The service personnel should acquaint
themselves with the use of the test equipment.
latest editions of EN 60601-1 and UL 60601.
requirements.
equipment within patient environments must meet the
requirements of the IEC 60601-1-1 medical electrical
systems standard and should be put under electrical safety
tests at the frequency recommended for the monitor.
Cautions
CAUTION: Observe extreme caution when a defibrillator is in use. Do
not touch any part of the patient, table, or monitor when a
defibrillator is in use. The Accutorr V should not be used
adjacent to or stacked with other equipment. If adjacent or
stacked use is necessary, the Accutorr V should be observed
to verify normal operation in the configuration in which it
will be used.
CAUTION: The unit should be checked periodically for obstructed vents.
CAUTION: At the end of their life, dispose of the Accutorr V,
CAUTION: When equipped with Nellcor
CAUTION: When equipped with MASIMO
If an obstruction is found, refer the unit to qualified service
personnel.
accessories, and single use supplies in accordance with local
regulations. Dispose of packaging waste in accordance with
local regulations.
®
oxygen transducers including Nellcor
dedicated adhesive sensors. Use of other oxygen
transducers may cause improper oximeter performance.
oxygen transducers including MASIMO LNOP
®
LNCS
patient dedicated adhesive sensors and MASIMO PC
Series Patient Cable. Use of other oxygen transducers may
cause improper Oximetry performance.
SpO2, use only Nellcor®
®
Oxisensor® patient
®
SpO2, use only MASIMO®
®
and MASIMO
viii 0070-10-0702 Accutorr V Service Manual
Cautions Introduction
CAUTION: Inaccurate readings may be caused by incorrect sensor
CAUTION: Route cables neatly. Ensure cables, hoses, and wires are
CAUTION: When cleaning sensors, do not use excessive amounts of
CAUTION: Recharge the Lithium ion battery while in the unit at room
application or use; significant levels of dysfunctional
hemoglobins (i.e. carbohemoglobins or methemoglobin); or
intra-vascular dyes such as indocyanine green or methylene
blue; exposure to excessive illumination, such as surgical
lamps (especially ones with a Xenon light source), bilirubin
lamps, fluorescent lights, infrared heating lamps, or direct
sunlight; excessive patient movement; venous pulsations;
electro-surgical interference; and placement of a sensor on
an extremity that has a blood pressure cuff, arterial
catheter, or intra-vascular line.
kept away from patient’s neck to avoid strangulation. Keep
floors and walkways free of cables to reduce risk to
hospital personnel, patients, and visitors. If the sensor or
patient cable is damaged in any way, discontinue use
immediately.
liquid. Wipe the sensor surface with a soft cloth, dampened
with the cleaning solution. To prevent damage, do not soak
or immerse the sensor in any liquid solution. DO NOT
ATTEMPT TO STERILIZE .
temperature. If using the Accutorr V in a hot environment,
the Lithium ion battery may not charge when the unit is
connected to the AC mains.
CAUTION: Remove the battery if the Accutorr V is not used for an
extended period of time.
CAUTION: The Communications Connectors on the Accutorr V are only
for use with IEC 60601-1-1 compliant equipment.
CAUTION: Never place fluids on top of this monitor. If fluid spills on the
unit, wipe clean immediately and refer the unit to qualified
service personnel.
CAUTION: Before disassembling the monitor, eliminate static charges.
CAUTION: Properly connect the cables or wires when reassembling the
CAUTION: All tests should be performed by qualified personnel only.
CAUTION: Disconnect the monitor from the patient and make sure that
When disassembling the parts labeled with static-sensitive
symbols, wear electrostatic discharge protection such as
antistatic wristband or gloves. Follow the correct sequence
to disassemble the monitor. Otherwise, the monitor may be
damaged permanently. Disconnect all the cables before
disassembling any parts. Take care not to damage any
cables or connectors.
monitor to avoid short circuit. When assembling the
monitor, select proper screws. If the wrong size screw is
tightened by force, the monitor may be damaged and the
screw or the part may not function as expected.
important data is saved before upgrading the monitor.
CAUTION: Do not shut down or power off the equipment when
upgrading the bootstrap program. Otherwise, it may cause
the equipment to break down.
Accutorr V Service Manual 0070-10-0702 ix
Introduction Notes
CAUTION: Program upgrades should be performed by qualified
service personnel only.
Notes
NOTE: The Accutorr V should be operated only by trained and
qualified personnel.
NOTE: Use disposable and single use accessories only once.
NOTE: Place the equipment in a location where the screen can
easily be seen and the operating controls can easily be
accessed.
NOTE: The instructions in this manual are based on the maximum
configuration.
NOTE: The optional Temperature module kit must be installed only
by trained personnel, and proper ESD prevention methods
must be followed.
NOTE: Only devices specified by Mindray DS USA, Inc. shall be
connected the RS-232 port
NOTE: When the RS-232 connector is used for DIAP, barcode power
must be set to OFF.
NOTE: Disconnect the Accutorr V from the mains to isolate it from
the mains power during an emergency.
Safety Designations
Safety designations per IEC 60601-1 Standard:
Type of protection against electric sho ck Class 1 with internal electric power source.
Where the integrity of the external protective
earth (ground) in the installation or its
conductors is in doubt, the equipment shall be
operated from its internal electric power
source.
Degree of protection against electric shock Monitor - Type B applied part.
NIBP - Type BF defibrillation protected
applied part.
SpO
- Type BF protected applied part.
2
Temp - Type BF protected applied part.
Supply Connection 100 – 240 V
50/60 Hz
0.85 – 0.5 A
Mode of Operation Continuous
AC
x0070-10-0702Accutorr V Service Manual
Product Limitations Introduction
Protection Against Hazard of Explosion Not Protected (Ordinary)
Protection Against Ingress of Liquids IPX1
Degree of Electrical Connection Between
Equipment and Patient
Degree of Mobility Portable
Equipment designed for direct electrical and
non-electrical connection to the patient.
Product Limitations
Non-invasive blood pressure (NIBP) accuracy depends on the application of the proper cuff
size. See Chapter 3.0 of the Operating Instructions for detailed information.
The Accutorr V will not operate effectively on patients who are experiencing convulsions or
tremors.
The Accutorr V is a portable device intended for intra-hospital use.
If the pressure cuff is not placed at the patient’s heart level, the NIBP measurement may be
subject to error, due to the hydrostatic effect.
The pulse rate data displayed on the Accutorr V is computed from the measurement of
peripheral pulses (peripheral pulses taken only during a measurement cycle). The rate
measured by the Accutorr V may differ from the rate of an ECG monitor. This is because the
ECG is an electrical signal that may not always result in a peripheral pulse.
Administration of certain vasoconstrictor drugs (for example, norepinephrine), may reduce
peripheral perfusion to a level that prevents the Accutorr V from taking pulse rate
measurements.
Arterial compression, tricuspid regurgitation, or other conditions may reduce perfusion to a
level that prevents the Accutorr V from taking pulse rate measurements.
The presence of arrhythmias may increase the time required to complete a measurement and
may extend this time so that a measurement cannot complete.
The Accutorr V is not intended for use during CPR. The monitor uses an oscillometric
technique based on normal peripheral circulation to compute blood pressure.
Unpacking
Remove the instrument from the shipping carton and examine it for signs of shipping
damage. Save all packing materials, invoice, and bill of lading. These may be required to
process a claim with the carrier. Check all materials against the packing list. Contact the
Customer Service Department (800) 288-2121 or (201) 265-8800 for prompt assistance in
resolving shipping problems.
NOTE: The Accutorr V should only be shipped in its original
Accutorr V Service Manual 0070-10-0702 xi
packing materials to avoid shipping damage.
Introduction Symbols and Descriptions
T1
SpO
2
REF
Symbols and Descriptions
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
Attention, Consult
Accompanying Documents /
Refer to Manual
Type BF Equipment
Equipotentiality
Equipotential grounding
Alternating Current (AC) Adult
Predictive Thermometer
Connector
SpO
Connector Neonate
2
Electrical connectors Operating on battery power
Battery Manufacturer
Connected to AC mains
Defibrillator-proof Type BF
Equipment
Pediatric/Child
NIBP Connector
Power On/Off – Standby Recycle
Serial number Up key
Part Number Confirm key
Patient Information key Down key
Main menu key Deflate Cuff key
xii 0070-10-0702 Accutorr V Service Manual
Symbols and Descriptions Introduction
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
Set alarms key Patient Size key
Start NIBP key Alarm Silence key
Display Tabular Trends/Pleth
Wav e
NIBP interval key SP1
NC1 Nurse Call connector
RS-232 connector
(Serial Port 1)
Print key (front panel) CS1 Network connector
Print key (recorder)
Alarm Silenced indicator on
LCD display
Alarm Disabled indicator on
LCD display
Audio Alarm Off indicator on
LCD display
Classified by Underwriters Laboratories Inc. with respect to electric shock, fire and
mechanical hazards, only in accordance with UL 60601-1, CAN/CSA C22.2
NO.601-1, IEC 60601-1-1, IEC 60601-2-30, IEC 60601-2-49.
Accutorr V Service Manual 0070-10-0702 xiii
Introduction Symbols and Descriptions
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xiv 0070-10-0702 Accutorr V Service Manual
1.0
Theory of Operation
Introduction.................................................................................................... 1-2
Controls and Indicators ................................................................................... 1-2
System Overview............................................................................................ 1-2
Hardware Structure......................................................................................... 1-4
Accutorr V Service Manual 0070-10-0702 1 - 1
Introduction Theory of Operation
MAIN UNIT
RECORDER
BATTERY
CHAMBER
TEMP
MODULE
CHAMBER
MAIN BOARD
POWER
BOARD
KEY &
DISPLAY
PARAMETER
BOARDS
RECORDER
BOARD
BARCODE
SCANNER
SYSTEM
SOFTWARE
PARAMETER
SOFTWARE
UPGRADE
SOFTWARE
PRINT
SOFTWARE
GATEWAY
SOFTWARE
BARCODE
SCANNER
SUPPORT
SYSTEM
HARDWARE
MECHANICAL
SOFTWARE
1.1 Introduction
The Accutorr V monitors the following patient vital signs: non-invasive blood pressure (NIBP),
pulse oxygen saturation (SpO2), pulse rate (PR), and temperature (Temp) for a single adult,
pediatric, or neonatal patient. Temperature is measured using the optional Temperature
Module.
1.2 Controls and Indicators
For information on controls, connectors, and indicators, refer to the Accutorr V Operating
Instructions, Part Number 0070-10-0699-02.
1.3 System Overview
FIGURE 1-1 shows the relationship of the Accutorr V monitoring system’s mechanical,
hardware, and software components.
FIGURE 1-2 shows the Accutorr V monitoring system’s PC board connections.
1 - 2 0070-10-0702 Accutorr V Service Manual
FIGURE 1-1 System Mechanical, Hardware, and Software Overview
Theory of Operation System Overview
J10
J3
J2
J1
J4
J6
J2
P1
P2
J2
J1
J1
P5
J6
J2
J2
J7
J8 J9
J2 J3 J4 J5
J11 J12 J13
P3 P4
P2
J4 J5
POWER
RECORDER
SpO
2
TEMP
NIBP
ISOLATION
POWER BOARD
MAIN BOARD
PAR AM ETER RECE PTAC LE
KEY & DISPLAY
BOARD
AC
INLET
FAN
BATTERY
LCD
BDM
PORT
SPEAKER
NETWORK CONNECTOR
NURSE CALL
RS232
J3
J4
ISOLATION
POWER BOARD
FIGURE 1-2 The System PCBA Connections
Accutorr V Service Manual 0070-10-0702 1 - 3
Hardware Structure Theory of Operation
ACCUTORR V
ISOLATION
POWER BOARD
TEMP MODULE
SpO
2
MODULE
NIBP MODULE
FAN
RECORDER
SPEAKER
KEY &
DISPLAY
BOARD
BATTERY
AC
NURSE CALL
RS232
ETHERNET
MAIN BOARD
POWER BOARD
COMMUNICATIONS
/POWER SUPPLY
ISOLATION
POWER BOARD
POWER
SUPPLY
LED &
KEY
LCD
COMMUNICATIONS
/POWER SUPPLY
1.4 Hardware Structure
FIGURE 1-3 shows the Accutorr V’s Hardware Structure. The core of the system is the main
board, which supplies power for all parameter modules. The parameter modules directly
communicate with the main board. The the main board processes measurements and the
status of all modules, and displays them through the key and display board.
FIGURE 1-3 The Accutorr V’s Hardware Structure
NOTE: The SpO2 isolation power board does not apply to models
with DPM Pulse Oximetry.
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Theory of Operation Hardware Structure
CPU
WATCHDOG
PHY RTL8201
RTC E2 PROM
RS232 IC
FLASHSDRAM
LINEAR POWER
AUDIO PROCESS
CIRCUIT
FPGA
NURSE CALL
ETHERNET
SPEAKER
3.3V LCD
1.5V
5.0V 12V LED KEY
SERIAL PORT 0
RS232
SERIAL PORT 1:
NIBP
SERIAL PORT 2:
SpO
2
SERIAL PORT 3:
TEMP
SERIAL PORT 4:
RECORDER
1.4.1 Main Board
FIGURE 1-4 shows the main board, which provides resources and support for the overall
system. It controls the LCD, LED, keyboard, speaker, and recorder. It also communicates with
parameter modules and connectors. The main board also controls communication with the
speaker, the recorder, and all external connectors.
FIGURE 1-4 Main Board Principle Diagram
The main board communicates with all parameter modules and the recorder through an
FPGA extended serial port.
The main board supplies information using FPGA to the key and display board. It drives the
display, detects the keys, and implements the user interface.
The main board controls the alarm indicator using FPGA.
The main board controls the speaker to give audible alarms, key tones, and Pitch Tone.
The main board provides the nurse call connection, network connection, and R232
connection.
The real-time clock is implemented by the RTC chip. The RT clock is powered by the AC
mains, battery, or button cell on the main board. The button cell ensures the continuous
working of the clock in the event that the AC mains and batteries are not available.
Accutorr V Service Manual 0070-10-0702 1 - 5
SDRAM stores running program instructions and data temporarily. The system memory and
trend data memory is flashed. The device configuration memory is EEPROM.
Hardware Structure Theory of Operation
AC
INPUT
EMI
FILTER
RECTIFIER
& FILTER
RECTIFIER
& FILTER
FLYBACK
CONVERTER
CURRENT
DETECTION
PMW
CONTROLLER
BATTERY
CHARGING
CIRCUIT
DC/DC
CONVERTER
COUPLER
FEEDBACK &
ISOLATION
CIRCUIT
DC/DC
CONVERTER
SWITCH
CIRCUIT
DC/DC
CONVERTER
16.8V
12V
OUTPUT
5V
OUTPUT
3.3V
OUTPUT
0VP&0CP
0VP&0CP
0VP&0PP
PCON
1.4.2 Power Board
The power board, shown in FIGURE 1-5, converts the input power (AC mains or battery) to
different working voltages for other boards. It also charges the battery.
FIGURE 1-5 Power Board Principle Diagram
The AC flows through the EMI filter and the rectifier and filter. The rectifier and filter converts
the AC to 16.8V DC voltage by the Flyback converter. The 16.8V DC voltage is the main
input to the DC/DC converters and charging circuit. The DC/DC converters convert 16.8V
DC to 12V, 5V, and 3.3V DC. The charging circuit charges the lithium battery. When the
Accutorr V is not connected to the AC mains, the battery supplies power to the DC/DC
converters.
The 16.8V DC output is protected against over-voltage and over-power. The 12V, 5V, and
3.3V DC outputs are protected against over-voltage, short-circuit, and over–current.
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Theory of Operation Hardware Structure
3.3V
DISABLE
LED
FSTN LCD
MODULE
LCD
SIGNAL
ADV
3.3V
VSB
KEY MATRIX
CPLD
START-UP
CIRCUIT
Switch
DETECTION
LED&KEY
1.4.3 Key and Displays Board
The key and displays board, shown in FIGURE 1-6, provides the user interface. The board
contains the LCD module, 7-segment digital display, LED indication lamp, and keys.
FIGURE 1-6 Key and displays Board Principle Diagram
The LCD module adjusts contrast and brightness.
The 7-segment digit units display parameter data.
The AC indicator is driven by the ADV output from the power board, and the working status
indicator (built in the Power On/Off key) is driven by 3.3V voltage. The battery indicator is
jointly controlled by the flash control signal, ADV signal, and VBC signal.
The keypad contains the power ON/OFF key and the other 13 function keys.
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Hardware Structure Theory of Operation
HOST
ISOLATED SERIAL
IN/OUTPUT PORT
4KV ISOLATED
POWER SUPPLY
+3.3V
+5V
-5V
+12V
CPU
/RST
WDI
DRAM
FLASH
A/D
CONVERTER
OFFSET DAC
OFFSET
AMPLIFIER
WATCHDOG
DRIVE DAC
LED DRIVE
CIRCUITRY
SENSOR
GAIN CONTROL
CIRCUITRY
PROGRAMMABLE
GAIN CIRCUITRY
1.4.4 Parameter Boards
1.4.4.1 SpO
FIGURE 1-7 shows the SpO2 module parameter board diagram.
Module
2
FIGURE 1-7 SpO
The SpO
sensor collects the pulsing red and infrared light signals transmitting through the
2
Module Principle Diagram
2
finger or toe, and processes the collected signals to create the measured result. The SpO2
module controls the LED drive circuit and the amplifying circuit gain corresponding to the
finger or toe perfusions and transmittances.
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Theory of Operation Hardware Structure
CUFF
PRESSURE
SENSOR
PRESSURE
SENSOR
FOR
PROTECT
PRESSURE
SIGNAL
AMPLIFIER
CIRCUITS
PRESSURE
SIGNAL
AMPLIFIER
CIRCUITS
FOR
PROTECT
CPU
ASYCHRONOUS
SERIAL
COMMUNICATION
WATCHDOG
OVER
PRESSURE
PROTECT
CIRCUIT
A/D
CONVERTER
PRESSURE
SIGNAL
MOTOR CONTROL
FEEDBACK SIGNAL
PUMP AND
VALVE
CONTROL
CIRCUIT
FLASH DRAM
MANIFOLD
VALV ES
AND PUMP
TEMPERATURE
DETECT
CIRCUIT
PROBE
RECOGNIZE
CIRCUIT
A/D
CIRCUIT
PROBE
HEAT
CIRCUIT
CPU SYSTEM
(ROM & RAM
WATCHDOG)
POWER
&
SIGNAL
ISOLATE
CIRCUIT
MAIN
BOARD
1.4.4.2 NIBP Module
FIGURE 1-8 shows the NIBP module parameter board diagram.
FIGURE 1-8 NIBP Module Principle Diagram
The Accutorr V calculates NIBP values using the oscillometric method of noninvasive blood
pressure measurement. These measurements correspond to comparisons with auscultatory
values, measured using the fifth Korotkoff sound within ANSI/AAMI SP10 standards for
accuracy.
1.4.4.3 Optional Temperature Module
FIGURE 1-9 shows the Temperature module parameter board diagram.
FIGURE 1-9 Optional Temperature Module Principle Diagram
The Temperature Module uses a thermistor as a sensor for measuring temperature. The
resistance of a given thermistor is nonlinearly relative to the temperature. The Temperature
Module measures the resistance of the thermistor and converts it into temperature.
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Hardware Structure Theory of Operation
1.4.5 Recorder
The recorder receives data from the main board and sends it to the thermal printhead for
printing. It has a button to start or stop printing and a green LED to indicate the presence or
absence of paper.
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Theory of Operation Hardware Structure
1.4.6 Bar Code Scanner
The bar code scanner reads one-dimensional and two-dimensional bar codes to simplify
admitting a patient. The bar code scanner communicates with the monitor. The serial port
supplies it with power. The scanner’s serial port is defined in the following table:
PIN DEFINITION
2Barcode_RX
3Barcode_TX
5GND
9VCC5VDC
The monitor’s serial port is defined in the following table:
PIN DEFINITION
2Monitor_TX
3Monitor_RX
5GND
9VCC5VDC
Basic settings of the bar code scanner are listed in the following table:
HOST PARAMETERS BAR CODE SCANNER FACTORY DEFAULT
Baud Rate 9600 9600
Data Bits 8 8
Stop Bits 1 1
Calibration bit 0 0
Handshaking None None
USER PARAMETERS BAR CODE SCANNER FACTORY DEFAULT
Beeper Tone Medium Medium
Beeper Volume Medium High
Trigger Mode Level Auto Aim
Parameter Scanning Disable Enable
DATA FORMAT BAR CODE SCANNER FACTORY DEFAULT
Prefix Value 7013 <CR><LF> 7013 <CR><LF>
Suffix 1 Value
Suffix 2 Value
Scan Data Transmission Format <PREFIX><DATA><SUFFIX 1><SUFFIX 2> Data only
7013 <CR><LF> 7013 <CR><LF>
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Hardware Structure Theory of Operation
To ch an ge p ar am et er s et ti ng s, s ca n the following bar codes in sequence.
1. Set parameter defaults:
2. Set beeper volume:
3. Set trigger mode:
4. Set scan data transmission format:
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Theory of Operation Hardware Structure
5. Disable parameter scanning:
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Hardware Structure Theory of Operation
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