Welch Allyn VITAL SIGNS MONITOR Service manual
Service Manual
Patient Monitor
Service Manual
Welch Allyn
Vital Signs Monitor
Medical Division
4341 State Street Road, P.O. Box 220
Skaneateles Falls, NY 13153-0220
PN 95P360E
Copyright 1996
Welch Allyn Vital Signs Monitor Service Manual
SECTION 1:
General Information
Revision 4.0
SERVICE MANUAL
Welch Allyn
Vital Signs Monitor
Copyright 1996
Welch Allyn Co.
4341 State Street Road Service Manual pn95P360E
Skaneateles Falls, NY 13153-0220 Rev. 4, 9/98
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
*Note: All drawings enclosed are for reference only. Consult the system or the factory for all current drawings.
Revision History
Revision Sections Date Author Description
1.00 All 4/18/96 JDB/RJS Introduction of manual.
2.00 All 7/9/96 JDB Revision made due to
problems found in training
and changes to the repair
software.
3.00 All 5/28/97 JDB Revisions made for
support of Nellcor SpO
module.
4.00 All 10/1/98 JDB Added schematics, board
layouts and bill of
materials, miscellaneous
corrections.
2
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
Table Of Contents
SECTION 1: General Information Sub-Section: Page:
To Service Personnel................................................ 1.1 1
Limited Warranty/Warranty Assistance ..................... 1.2 3-4
Basic System Description.......................................... 1.3 5
Basic System Operation Index .................................. 1.4 7
Basic System Operation............................................ 1.4 8-14
Block Diagram of Unit Operation............................... 1.5 16-17
Specifications ............................................................ 1.6 19-23
Serial numbering system defined.............................. 1.7 25
Firmware Identification .............................................. 1.8 27
SECTION 2: Service Set Up
Service Manual Intent & Scope ................................. 2.1 1
Test Equipment Bench Layout .................................. Fig 2.2.1 3-4
Required Tools/Equipment List ................................. 2.2.2 5
Replacement Parts List ............................................. 2.3 7-9
Maintenance/Service Support ................................... 2.4 11
SECTION 3: Problem Diagnosis
Overview ................................................................... 3.1 1
Diagnostic Process/Returned units ........................... 3.2 3-5
When and how to calibrate........................................ 3.3 7-8
Loading Unit Software............................................... 3.4 9
Welch Allyn Monitor Self Diagnostic Fault Codes ..... 3.5 11-13
“Complaint/Cause/Corrective Action” ........................ 3.6 15-19
SECTION 4: Major Component Removal/Replacement
(IN ORDER OF REMOVAL ACCESS)
Front Housing............................................................ 4.1 1-2
Main Fuse F1 on Main PCB ...................................... 4.2 3-4
Main Printed Circuit Board (PCB).............................. 4.3 5-6
DC TO DC Converter (SpO
Pressure Transducer on Main PCB........................... 4.5 9-10
Display PCB .............................................................. 4.6 11-12
Key Pad (front housing)............................................. 4.7 13-14
Temperature PCB ..................................................... 4.8 15-16
Specific Oxygen Board (Nonin) ................................. 4.9 17-19
Specific Oxygen Board (Nellcor) ............................... 4.10 21-22
Pump ......................................................................... 4.11 23-24
Pressure Switch MPL-503......................................... 4.12 25-26
Valve (Pneutronics) ................................................... 4.13 27-28
Printer/Printer PCB/keypad ....................................... 4.14 29-30
Battery ....................................................................... 4.15 31-32
units) ............................ 4.4 7-8
2
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
SECTION 5: Test Procedures Sub-Section: Page:
Calibration test.......................................................... 5.1 1-2
Current tests............................................................. 5.2 3
Noise test.................................................................. 5.3 5
Button Test ............................................................... 5.4 7
Print quality............................................................... 5.5 9
Pneumatic test.......................................................... 5.6 11-12
Hardware Fail-safe Tests ......................................... 5.7 13
option testing................................................... 5.8 15
SpO
2
Temperature option testing....................................... 5.9 17
Check List for CBPM Service Work.......................... 5.10 19-20
SECTION 6: Drawings, Schematics, Board Layouts, Bill of Materials
SECTION 7: Repair Test Specifications
Specifications ........................................................... 7.1 1-5
CAUTION: PRIOR TO DOING REPAIR WORK, USE GROUNDING MAT AND
ANTI-ST A TIC WRIST STRAP T O MINIMIZE RISK OF DAMA GE T O SENSITIVE
ELECTRONIC COMPONENTS .
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
1.1 To Service Personnel:
Read and understand the Welch Allyn Vital Signs Monitor Operator Manual and this Service
Manual. The information contained in both of these publications is subject to change without
notice and should not be construed as a commitment by Welch Allyn, Inc.
Welch Allyn assumes no responsibility for any errors that may appear in this manual. If the
product and/or its operation varies significantly from any description herein, please contact the
WELCH ALLYN TECHNICAL SERVICE DEPARTMENT:
1-800-450-9275
(828) 684-4895
Fax (828)687-9323
Welch Allyn, Inc.
95 Old Shoals Road
Arden, North Carolina 28704
This product has been designed to provide a high degree of safety and reliability. However, we
can not guarantee against: deterioration of components due to aging, normal wear, tampering,
and abuse.
Section 1: General Information
All service and repairs must be performed by authorized Welch Allyn personnel or agents, using
approved Welch Allyn replacement parts and approved process materials. Failure to so will
invalidate the product warranty. Please refer to the product warranty for specific coverage.
Welch Allyn, Inc.
95 Old Shoals Road
Arden, North Carolina 28704
USA
1 800 450-9275
CAUTION WHEN USING ADHESIVES:
ALWAYS WEAR SAFETY GLASSES AND PROVIDE ADEQUATE VENTILATION WHEN USING
ADHESIVES, THEIR ACCELERATORS AND RTV SEALANTS. READ, UNDERSTAND, AND COMPLY
WITH SAFETY RECOMMENDATIONS IN THE MATERIAL SAFETY DATA SHEET MSDS) FOR THESE
MATERIALS. SUPER-GLUES (CA ADHESIVES) CAN CAUSE CORNEAL DAMAGE IF ACCIDENTLY
SQUIRTED IN THE EYES, AND CAN SPONTANEOUSLY COMBUST IF SPILLAGE IS WIPED UP WITH
CLOTH OR PAPER TISSUES. READ THE WARNINGS AND CAUTIONS PRINTED ON THE BOTTLES OR
TUBES OF THESE GLUES!
1
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
1.2 Limited Warranty
Welch Allyn warrants the Welch Allyn Vital Signs Monitor, when new, to be free
of defects in material and workmanship and to perform in accordance with
manufacturer’s specifications for a period of two years from the date of purchase
from Welch Allyn or its authorized distributors or agents. Welch Allyn will either
repair or replace any components found to be defective or at variance from
manufacturer’s specifications within this time at no cost to the customer. It shall
be the purchaser’s responsibility to return the instrument to Welch Allyn or an
authorized distributor, agent or service representative. This warranty does not
include breakage or failure due to tampering, misuse, neglect, accidents, modification or shipping. This warranty is also void if the instrument is not used in
accordance with manufacturer’s recommendations or if repaired by other than
Welch Allyn or an authorized agent. Purchase date determines warranty requirements. No other express warranty is given.
Section 1: General Information
To receive service assistance or to ask questions regarding this warranty, please call or write:
Welch Allyn Technical Services Dept.
95 Old Shoals Road
Arden, North Carolina 28704 USA
1 (800) 450-9275 or (828) 684-4895
Fax: (828) 687-9323
Service Policy
All repairs on products under warranty must be performed or approved by a Welch Allyn
Service Center.
should be repaired by qualified electronics personnel or a Welch Allyn Service Center.
Unauthorized repairs will void the warranty
. Products out of warranty
Technical Assistance
If you have an equipment problem that you cannot resolve, call the Welch Allyn Service
Center nearest you for assistance. Technical service support is available to you by telephone on normal business days, from 8:30AM until 4:30PM Eastern Standard Time at the
phone numbers listed on the next page.
3
Section 1: General Information
Before returning a product for repair you must obtain authorization from Welch
Allyn. An RGA (Return Goods Authorization) number will be given to you by our
service personnel. Be sure to note this number on the outside of your shipping
box. Returns without an RGA number will not be accepted for delivery.
Welch Allyn Vital Signs Monitor Service Manual
Revision
Welch Allyn Service Centers
For Service or Repair
4.0
USA Customers
Welch Allyn, Inc.
Technical Service Centers
95 Old Shoals
Arden, NC 28704-9739 USA
Phone: 828-684-4895
Fax: 828-687-9323
Welch Allyn
Technical Service Center
Zollerstrasse 2-4 Road
D-7241 7 Jungingen
GERMANY
Phone: [49]-7477-9271-73
Fax: [49]-7477-9271-93
Welch Allyn Ltd.
21-09 Golden
Beach Road
Singapore 199589
REPUBLIC OF SINGAPORE
Phone:
Fax: [65]-291-5780
[65]-29
Road
GmbH
Mile to 6001
l-0882
CANADA Customers
Welch Allyn Canada Limited
Technical Service Centers
160 Matheson Blvd., East
Mississauga, Ontario
Ph: 905-890-0004 or 1 800-561-8797
Fax: 905-890-0008
INTERNATIONAL Customers
Welch Allyn Australia Pty. Ltd.
Technical Service Center
Ground Floor, 18-20
Lane Cove
AUSTRALIA
Phone: [61]-29-4183-155
Fax: [61]-29-4183-650
NSW 2066
L4Z1
Orian
V4 CANADA
Road
MDI International
Technical Service Centers
7324 SW 48th Street
Miami, FL 33155 USA
Phone: 305-669-9591
Fax: 305-669-l 971
4
LATIN AMERICA Customers
Welch Allyn
\N!!
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
Section 1: General Information
1.3 Basic System Description
Introduction
The Welch Allyn Vital Signs Monitor is designed to non-invasively and
automatically measure systolic and diastolic pressure, pulse rate, temperature and oxygen saturation (SpO
sure, pulse, temperature and
read displays, and may be printed via an integrated thermal printer, as
desired.
The rechargeable battery and wide variety of mounting accessories make
the Clinical Monitor convenient for many locations. The operator may
choose any combination of simultaneous measurement modalities. This
flexibility, combined with features such as programmable alarms and automatic BP cycles, makes the Clinical Monitor ideal for a wide variety of patient monitoring needs.
) for adult and pediatric patients. All pres-
2
SpO2 values are displayed on large, easy-to-
Refer to the Operator Manual PART NUMBER 5200-85 (SPECIFY LANGUAGE) Section 1 for complete information on Indications For Use, Special
Features, Supplies and Accessories
5
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
Section 1: General Information
1.4 Basic System Operation
INDEX
1.5.1 Blood Pressure Operating Modes
a. Max/Min Blood Pressure and Pulse Ranges
b. Blood Pressure Manual Mode
c. Blood Pressure Auto Mode
1.5.2 Temperature Operating Modes
a. Max/Min Temperature Ranges
b. Temperature Normal Mode
c. Temperature Monitor Mode
1.5.3 SpO
Operating Mode
2
a. Max/Min SpO
b. SpO
Monitor Mode
2
1.5.4 Pulse Rate Feature
Max/Min Pulse Rate Ranges
Ranges
2
7
Section 1: General Information
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
1.4.1 Blood Pressure Operating Modes
When a blood pressure measurement cycle is initiated, the cuff will automatically be
inflated to the operator selected pressure level.
The cuff will immediately begin to deflate in a stepped fashion and will determine systolic
pressure and diastolic pressure from the pulses sensed by the cuff at various pressure
levels. This is the oscillometric method of non-invasive blood pressure monitoring.
Blood pressure measurements may be initiated manually, or automatically at time intervals determined by the user.
At the completion of a measurement cycle the systolic and diastolic pressures are displayed. If the Monitor is in Automatic Mode, the measured values are kept on display until
the next BP measurement is initiated. When not in Automatic Mode, the measured values are displayed for two minutes, after which time the display screen is blanked. The
most recent BP measurement may be recalled by pressing the REVIEW button.
When in Automatic Mode, if the unit is unable to determine the systolic or diastolic value,
the measurement will be automatically repeated once.
1.4.1.a. Max/Min Blood Pressure Ranges
The maximum and minimum ranges of blood pressure are detailed below:
Measurement Maximum Minimum
Systolic Pressure 250 mmHg 60 mmHg
Diastolic Pressure 160 mmHg 30 mmHg
8
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
Section 1: General Information
1.4.1.b. Blood Pressure Manual Mode
In the Manual Mode, a single blood pressure determination is made only when the
START button is pushed. The manual mode is the default mode of operation for blood
pressure determinations.
A measurement cycle may be canceled at any time by pressing the CANCEL button.
This action immediately initiates a rapid cuff deflation.
The blood pressure measurement data will appear on the display immediately following
the measurement. The display will blank after two minutes. If the display is blanked,
pressing the REVIEW button on the front panel will recall the measurement. Up to 99
prior measurements are available for review or printing.
In Blood Pressure Manual Mode, the following alarm limits may be activated; SYSTOLIC
HIGH LIMIT, SYSTOLIC LOW LIMIT, DIASTOLIC HIGH LIMIT, DIASTOLIC LOW LIMIT,
PULSE RATE HIGH LIMIT and PULSE RATE LOW LIMIT. Blood pressure determinations which activate alarms are indicated by flashing displays and a repetitive audible
tone. If an alarm limit is violated, subsequent blood pressure determinations may be
made only after the alarm condition is reset by pressing any button on the Monitor’s
display.
1.4.1.c. Blood Pressure Automatic Mode
The Automatic Blood Pressure Mode is entered by pressing the AUTO button. Pressing
the AUTO button displays a choice of 10 cycle interval times as follows: “st” (STAT mode)
3 min, 4 min, 5 min, 10 min, 15 min, 30 min, 45 min, 60 min and 90 min. These choices
represent the time interval from the beginning of one cycle to the beginning of the next
automatic cycle. STAT mode allows the monitor to take continuous blood pressure measurements for 15 minutes. In addition, the operator may choose to disable the Auto Mode
by choosing “—” (two dashes).
A measurement cycle may be canceled at any time by pressing the CANCEL button.
This action immediately initiates a rapid cuff deflation.
The blood pressure measurement data will appear on the display immediately following
the measurement and will remain displayed until the next measurement cycle is initiated.
9
Section 1: General Information
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
1.4.1.c. Blood Pressure Automatic Mode continued
In Blood Pressure Auto Mode, the following alarm limits may be activated; SYSTOLIC
HIGH LIMIT, SYSTOLIC LOW LIMIT, DIASTOLIC HIGH LIMIT, DIASTOLIC LOW LIMIT,
PULSE RATE HIGH LIMIT and PULSE RATE LOW LIMIT. Blood pressure determinations which activate alarms are indicated by flashing displays and a repetitive audible
tone. Any alarm limit violation
sure determinations. The alarm may be reset by pressing any button on the monitor’s
display.
must be reset to continue automatically timed blood pres-
1.4.2. Temperature Operating Modes
Thermistor Thermometry measurements are made with the DIATEK/Welch Allyn
SureTemp4TM thermometer. Oral and rectal probes utilize single-use disposable probe
covers which limit cross-contamination. Oral or rectal temperatures are taken using
‘Normal’ or ‘Monitor’ operating modes. Auxiliary temperatures may be taken using the
oral probe in the monitor operating mode.
In the normal mode the thermometer’s microprocessor “predicts” body temperature in
about 4 seconds for oral temperatures and in about 15 seconds for rectal temperatures.
The monitor mode displays the patient’s actual temperature after 3 minutes and will
continue to display an updated temperature as long as the probe remains in place.
Temperature readings may be displayed in Fahrenheit or Celsius scales.
1.4.2.a. Max/Min T emperature Ranges
Readings Normal Mode Monitor Mode
Temperature Max 108.0F Max 108.0F
Max 42.2C Max 42.2C
Min 84.0F Min 84.0F
Min 28.9C Min 28.9C
10
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
Section 1: General Information
1.4.2.b. T emperature Normal Mode
In Normal Mode, the device will measure temperature at discrete intervals and then
calculate the rate of change according to a known algorithm. This allows the thermometer to predict the end point that the thermistor would reach if it were left in the mouth until
it reached mouth temperature. This predictive
an accurate oral temperature reading in approximately 4 seconds.
Normal mode is the default operating mode for temperature determinations.
Operator selectable patient alarm limits are not available in Temperature Normal
Mode. However, temperatures which are outside of the operating range of the
device will be noted on the temperature display.
feature allows the thermometer to arrive at
1.4.2.c. Temperature Monitor Mode
Continuous Monitor Mode operation is normally used for longer term monitoring and
when difficult situations prevent accurate temperatures from being taken in the normal
mode. The probe must be in contact with tissue for at least three (3) minutes for accurate
temperature measurement. Monitor mode temperatures may not be identical to predicted
‘Normal’ temperatures because of ambient temperature influence and other factors. The
trend in temperature is the important standard to be observed when in the ‘Monitor’ mode.
Operator selectable patient alarm limits are not available in Temperature Normal
Mode. However, temperatures which are outside of the operating range of the
device will be noted on the temperature display.
11
Section 1: General Information
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
1.4.3 SpO Operating Mode
2
The Welch Allyn Vital Signs Monitor incorporates either the Nonin® pulse oximetry system
®
or the Nellcor
(% SpO
) by measuring the absorption of red and infrared light passed through the tis-
2
pulse oximetry system which determines arterial oxyhemoglobin saturation
sues. Changes in absorption caused by pulsation of blood in the vascular bed are used
to determine arterial saturation and pulse rate.
Oxygen saturation percent is calculated with each pulse detected, and thus the monitor
display is continually updated. The pulse signal bar graph is an indicator of the strength
and quality of the detected pulses.
When SpO
pulse rate measurement from the SpO
is measured, the patient’s pulse rate is also measured and displayed. A
2
determination overrides a pulse rate measure-
2
ment derived from a blood pressure measurement.
In SpO2 monitoring mode operator selectable alarm limits for low SpO2 % may be acti-
vated. A condition which violates the SpO
low limit alarm is indicated by a flashing
2
display and repetitive audible tone. Should a patient alarm condition for ≤ or pulse rate
occur, the Monitor will indicate an alarm condition (flashing & beeping) while continuing to
monitor and display the patient’s current SpO
%. The alarm will automatically reset when
2
the patient’s condition returns to within the preset alarm parameters.
Should a patient alarm condition for SpO
or pulse rate occur, the operator may invoke
2
“Silence Mode” by pressing the SILENCE button. This will silence the audible tone
(display will continue to flash), while the practitioner attends to the patient and the monitor. Silence mode resets automatically after 30 seconds, or when the patient’s condition
returns to within the preset alarm parameters.
Removal of the SpO
sensor from the patient will initiate an alarm. To reset the sensor
2
alarm, press any button on the monitor’s display.
SpO
is generally measured via pulses detected using a finger sensor. However, for
2
certain situations SpO
may be measured at alternate sites including the earlobe, fore-
2
head and toes. Special sensors must be employed in these situations.
12
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
Section 1: General Information
1.4.3.a. Max/Min SpO
Ranges
2
The SpO2 sensor is designed to detect oxygen saturation as follows.
Maximum Minimum
SpO
2
1.4.3.b. SpO
Monitor Mode
2
99% 40%
The SpO2 monitor performs most accurately with the finger clip sensor, which may be
used on all fingers except the thumb. The finger clip sensor is recommended for spot
checks or short term (<30 minutes) continuous monitoring.
The device determines arterial oxyhemoglobin saturation (SpO
%) by measuring the
2
absorption of red and infrared light passed through the tissue. Oxygen saturation and
pulse rate are displayed on the LED digital display. On each detected pulse, the pulse
signal bar graph flashes. The intensity of this signal is a simple visual indicator of waveform signal strength, and can identify situations where the pulsatile nature of the tissue
may not be adequate for an accurate SpO
reading. The update interval of the bar graph
2
should correspond to the patient’s pulse rate. This is an indication of the quality of the
SpO2 signal.
1.4.4 Pulse Rate Feature
The Welch Allyn Vital Signs Monitor is capable of determining pulse rate as an adjunct to
the blood pressure measurement and the SpO
The pulse rate, in beats per minute, will be determined primarily from the SpO
methodology. In the case where SpO
is not available, or is disabled, the pulse rate display
2
will be driven from data collected as part of the blood pressure measurement method.
There are two operator selectable alarm limits for the pulse rate. They are PULSE RATE
HIGH LIMIT and PULSE RATE LOW LIMIT. Pulse rates which activate alarm limits are
indicated by a flashing display and a repetitive audible tone.
Should a pulse rate alarm occur when the pulse rate measurement is derived from the
blood pressure measurement, no subsequent blood pressure or pulse rate measurements
may be made until the alarm is reset. The alarm may be reset by pressing any button on
the monitor’s display.
measurement.
2
measurement
2
13
Section 1: General Information
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
Should a pulse rate alarm occur when the pulse rate measurement is derived from the
SpO
measurement, the monitor will indicate an alarm condition (flashing & beeping)
2
while continuing to monitor and display the patient’s current SpO
% and pulse rate. The
2
alarm will automatically reset when the patient’s condition returns to within the preset
alarm parameters.
Should a patient alarm condition for pulse rate occur during SpO
monitoring, the opera-
2
tor may invoke “Silence Mode” by pressing the SILENCE button. This will silence the
audible tone (display will continue to flash), while the practitioner attends to the patient
and Monitor. Silence mode resets automatically after 30 seconds, or when the patient’s
condition returns to within the preset alarm parameters.
1.4.4.a. Max/Min Pulse Rate Ranges
The maximum and minimum pulse rate ranges are as follows:
Maximum Minimum
Pulse Rate 200 bpm 40 bpm
14
Section 1: General Information
Welch Allyn Vital Signs Monitor Service Manual
Figure 1.5 Block Diagram of Unit Operation
Revision 4.0
Off
➤
Yes
Yes
Reset
Display?
➤
Yes
➤
Yes
➤
➤
Start Taking
Reading
Is Cancel
Pressed?
No
➤➤➤
Is Reading
Finished?
No
➤
Display Last
Reading
Any button than
review select?
➤➤
No
Is 10 sec.
since last
action?
➤
No
Is Review
Pressed?
Yes
➤
Display
Next RDG?
➤
Is Power Button
➤
➤
➤
No
➤
Pressed?
No
Power
Start
Review
➤
➤
Display
Record
Setting
Reset
➤
Yes
➤
Silence
➤
➤
➤
No
Is Alarm
Activated?
➤
Yes
Silence Alarm
for 30 Seconds
Yes
➤
Yes
➤
Is Start
Button Pressed?
No
➤➤
Post
Ready State
Auto
➤
Display Current
Timer Setting
Any button than
auto select?
Is 10 sec.
since last
action?
Is Auto
Pressed?
Display
Next Setting?
➤
No
No
➤➤➤➤
Yes
➤
No
Yes
➤
Is Cancel
➤
Button Pressed?
No
Select
➤
Reset
Display
➤
Record
Setting
➤
Is Adjust
Pressed?
No
➤
Is Select
Pressed?
Yes
➤
Record Setting
for Displayed
Alarm
➤
Display Next Alarm
@ Current Setting
Yes
➤
➤
F2
➤
Feed
Print
Mode
➤
➤
Display Current
Setting of 1st Alarm
Any button than
Yes
➤
Yes
Yes
➤
No
➤
➤
➤
M2
➤
adjust select?
➤
No
Is 10 sec.
since last
action?
No
Display
Next
Setting?
D
C
F1
P1
P2➤
M1
➤
➤
➤
➤
16
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
Section 1: General Information
Figure 1.5 Block Diagram of Unit Operation
M2
➤
BP module
active, SpO
module inactive
➤
M1
Both BP and SpO
2
SpO2 module
active, BP
module inactive
C
➤
Post
➤
➤
Show Versions
Print produces version report
Start closes valve
Cancel opens valve
Auto runs pump while pressed
module active
Review advances to next box
Power returns to “O” at any time
Cancel resets changes
Calibration
➤
➤
➤
P1
➤
Print
Report
F2
➤
D
➤
Post
Print produces version report
Auto runs pump while pressed
Auto runs pump while pressed
F1
➤
Advance Paper
One line
Review advances to next box
Power returns to “O” at any time
Cancel resets changes
➤
Show Versions
➤
Calibration
Start closes valve
Cancel opens valve
➤
Battery Voltage
Start closes valve
Cancel opens valve
➤
➤
P2
2
Battery Voltage
Start closes valve
Cancel opens valve
Auto runs pump while pressed
Temp Module Setup
Adjust changes setup
Set Date
Adjust changes flashing display
Select makes next display flash
➤➤➤➤➤
Set Time
Adjust changes flashing display
Select makes next display flash
SpO2 perfusion signal - systolic
display, display perfusion status
➤
Temp Module Setup
Adjust changes setup
Adjust changes flashing display
Select makes next display flash
Adjust changes flashing display
Select makes next display flash
A/D Channel Noise
Select changes A/D channels
➤
RS232/Service Port Test
Start begins cycling
Cancel halts cycling
➤ ➤
Set Date
Set Time
➤➤
Life Test
17
Welch Allyn Vital Signs Monitor Service Manual
Revision 4.0
Section 1: General Information
1.6 Specifications
Index:
1.6.1 Performance Specifications
1.6.2 Technical Specifications
a. Mechanical Specifications
b. Electrical Specifications
c. Environmental Specifications
1.6.3 Printer Specifications
1.6.1 Performance Specifications
The performance specifications of the Clinical Vital Signs Monitor are as follows:
CUFF PRESSURE RANGE
0 mmHg - 300 mmHg
INITIAL CUFF INFLATION
120 mmHg, 140 mmHg, 160 mmHg, 200 mmHg, 240 mmHg or 280 mmHg depending on
pressure preset level.
SYSTOLIC DETERMINATION
Maximum: 250 mmHg
Minimum: 60 mmHg
DIASTOLIC DETERMINATION
Maximum: 160 mmHg
Minimum: 30 mmHg
BLOOD PRESSURE ACCURACY
Blood pressure accuracy meets or exceeds SP10-1992 AAMI standards for non-invasive
blood pressure accuracy (AAMI standard: ± 5 mmHg mean error; 8 mmHg standard
deviation). Blood pressure accuracy is validated for pressure measurement using the
upper arm only.
BLOOD PRESSURE DETERMINATION TIME
20 seconds to 45 seconds typical, 140 seconds maximum.
19
Section 1: General Information
Welch Allyn Vital Signs Monitor Service Manual
PULSE RATE DETERMINATION
Maximum: 200 bpm
Minimum: 40 bpm
PULSE RATE ACCURACY
SpO
Module Heart Rate ±3.0%
2
Blood Pressure Algorithm Heart Rate ±5.0%
OVERPRESSURE CUTOFF
295 mmHg to 330 mmHg
TEMPERATURE DETERMINATION
Normal Mode Maximum 108.0F (42.2C)
Minimum 84.0F (28.9C)
Monitor Mode Maximum 108.0F (42.2C)
Minimum 84.0F (28.9C)
Revision 4.0
TEMPERATURE ACCURACY
Temperature accuracy meets ASTM E112-86: “Standard Specification for Electronic
Thermometer for Intermittent Determination of Patient Temperature.”
TEMPERATURE DETERMINATION TIME
Normal Mode: ORAL: 4 seconds typical, 15 seconds maximum
Monitor Mode: ORAL: 3 minutes.
OXYGEN SATURATION RANGE (SpO2%)
40-99% oxygen saturation
SpO2 ACCURACY
±3% in the range of 70-99% oxygen saturation (1 Standard Deviation)
BATTERY CHARGING
To at least 90% capacity in 12 hours. Unit will operate and charge battery simultaneously
when connected to power source.
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