Welch Allyn Spot Vital Signs 420 User manual

Welch Allyn Spot Vital Signs

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Spot Vital Signs

Service Manual

ii Welch Allyn Spot Vital Signs

Copyright 2012 Welch Allyn. All rights are reserved. To support the intended use of the product described
in this publication, the purchaser of the product is permitted to copy this publication, for internal
distribution only, from the media provided by Welch Allyn. No other use, reproduction, or distribution of
the publication, or any part of it, is permitted without written permission from Welch Allyn.

Welch Allyn assumes no responsibility for any injury to anyone, or for any illegal or improper use of the
product, that may result from failure to use this product in accordance with the instructions, cautions,
warnings, or statement of intended use published in this manual.

Welch Allyn, Spot Vital Signs, SureBP Technology, and SureTemp are registered trademarks of Welch
Allyn.

LNCS is a trademark of, and SET, LNOP, and Masimo are registered trademarks of, Masimo Corporation.
Possession or purchase of a Masimo SpO2-equipped device does not convey any express or implied
license to use the device with unauthorized sensors or cables which would, alone or in combination with
this device, fall within the scope of one or more of the patents relating to this device.

Nellcor and Oxi-Max are registered trademarks of Nellcor Puritan Bennett Inc.

Software in this product is Copyright Welch Allyn or its vendors. All rights are reserved. The software is
protected by United States of America copyright laws and international treaty provisions applicable
worldwide. Under such laws, the licensee is entitled to use the copy of the software incorporated with
this instrument as intended in the operation of the product in which it is embedded. The software may not
be copied, decompiled, reverse-engineered, disassembled, or otherwise reduced to human-perceivable
form. This is not a sale of the software or any copy of the software; all right, title, and ownership of the
software remain with Welch Allyn or its vendors.

For information about any Welch Allyn product, call Welch Allyn Technical Support:

USA [phone] Australia [phone]

Canada [phone] China [phone]

European Call Center [phone] France [phone]

Germany [phone] Japan [phone]

Latin America [phone] Netherlands [phone]

Singapore [phone] South Africa [phone]

United Kingdom [phone] Sweden [phone]

Reorder No. 4200-89E

Manual Material No. 718448 Ver A

Welch Allyn
4341 State Street Road
Skaneateles Falls, NY 13153 USA

EC REP

Regulatory Affairs Representative
Welch Allyn Limited
Navan Business Park
Dublin Road
Navan, County Meath, Republic of Ireland

Printed in USA

Service Manual iii

Revision Information

Date Revision Description Originator Approval

3/31/01 A Introduction of Service Manual JDB JDB

12/17/01 B Correction made to Section 1 regarding temperature accuracy,

JDB JDB
Section 2 regarding part numbers, Section 3 regarding error
codes, and updates to the drawings

9/12/02 C Added New PCB layout and schematic for Spot Extensions.

JDB JDB
Added tool SRC-MAX to tool list in Section 2.3. Removed old PCB
and Old SpO
SpO

2

and Spot Extensions SpO
Changed section 5.8 to cover both Spot and Spot Extension SpO
testing. General Spelling and grammar clean up.

02/02/03 D Arden document release to SKF. Updated USA Service Center

PCB and replaced with new Main PCB and New

2

PCB in section 2.4. Changed section 4.7 to cover both Spot

PCB removal and replacement.

2

2

JDB DLK
contact information.

05/01/03 E Correction to tools required for service. Corrected General

DLK DLK
Information phone numbers.

09/16/03 F Updates repair BOM. Updated Accessories. Re-formated manual

DLK DLK
to meet Welch Allyn service manual work instructions.

12/12/03 G Correction to page numbering and to voltage calibrations. Re-

DLK RJS
formatted all systems of measurement to meet NIST Standards.
Reformatted Appendix E. Corrected grammar and punctuation.
Revised service and support details in Section 1. Removed
schematics.

3/9/06 H Removed references to Nellcor motion tolerance. AMJ JPK

3/21/07 J SAP new version glitch AMJ FL

3/21/07 K Update section on Setting the Date and Time. Include testing and

disassembly/assembly for the Masimo SpO
updated repair parts lists.

feature and

2

2010/11/05 L Changed part number for SPOTRepair ToolSW CD from 130S57E

AMJ FL

KMR NEA
to 716948 on pages 39 and 52 . Updated copyright page with
latest service phone numbers and combined Title pages and
Front cover pages.

2012/04/26 A New Material Number taken out 718448. CE mark removal KMR GB

Drawings and/or illustrations and/or part numbers in this document are for reference only. For the most
current revision call the Welch Allyn Customer Service phone number (see page ii).

iv Welch Allyn Spot Vital Signs

Contents

1 - Introduction .............................................1

v

Warnings and cautions .............................................1

General warnings ..............................................1

Blood pressure warnings ........................................3

SpO2warnings ................................................4

Temperature warnings ..........................................5

IR communications port warnings .................................5

General cautions ..............................................5

Blood pressure cautions.........................................6

SpO2cautions ................................................6

Temperature cautions ..........................................6

Electrostatic discharge (ESD) ........................................7

Symbols ........................................................8

Safety symbols................................................8

Agency symbols...............................................8

2 - Overview ...............................................9

Purpose and scope ................................................9

Other applicable documents.........................................9

Contents checklist ...............................................10

Possible attachments .............................................10

Service ........................................................11

Technical assistance ..........................................11

Field replacement units ........................................11

Service loaners...............................................11

Service intervals .................................................12

Spot Vital Signs configurations ......................................12

Controls .......................................................13

LCD (liquid crystal display) .........................................15

Connections ....................................................16

Blood pressure hose and cuff connections ............................17

Temperature probe connection .....................................17

SpO2sensor.................................................17

Quick reference card ..........................................17

DCpower connection ..........................................18

Charging the battery ..............................................18

Standby mode...................................................18

vi Contents Welch Allyn Spot Vital Signs

3 - Functional overview .....................................19

Power on/off and system check procedure ............................19

Internal configuration mode ........................................20

Functional verification .............................................21

Temperature functional check ...................................22

SpO2 functional check .........................................24

4 - Calibration .............................................25

Connections ....................................................25

Voltage calibration................................................27

Blood pressure calibration .........................................27

Date/time set ...................................................28

5 - Troubleshooting ........................................29

Error codes .....................................................29

Causes and corrective action .......................................30

Battery voltage check .............................................33

Window display check ............................................33

Blood pressure calibration check ....................................33

Temperature functional check ...................................34

Masimo SpO2functional check ..................................34

Nellcor SpO2functional check ...................................34

Communication option check....................................34

Functional testing procedures ......................................34

Current test.....................................................35

Noise levels ....................................................35

Button test .....................................................35

Interface test ...................................................36

Print quality .....................................................36

Pneumatic tests .................................................37

Fail safe (over pressure) test .......................................37

Service work checklist ............................................38

6 - Disassembly and repair ..................................39

Battery disassembly ..............................................40

Temperature disassembly .........................................41

Front housing and key pad disassembly...............................42

LCD disassembly ................................................42

Power and battery cable disassembly ................................43

Main printed circuit board assembly..................................44

SpO2circuit board disassembly .....................................45

Masimo board ...............................................45

Nellcor board ................................................47

Pump and valve disassembly .......................................48

7 - Technical overview ......................................51

System description ...............................................51

Battery /charge system ........................................51

Service Manual Contents vii

Main CPU power supply........................................51

Clock/calendar power..........................................51

Mod B NIBP power ...........................................52

Thermometer power ..........................................52

SpO2power.................................................52

LCDpower..................................................52

Communications .............................................52

Interconnect diagram .............................................53

8 - Field replaceable units ...................................55

9 - Specifications ..........................................59

Patient population ................................................59

Blood pressure ..................................................59

Temperature ....................................................59

Pulse pximetry ..................................................60

Masimo sensor accuracy guide ..................................60

Masimo patents ..............................................60

Nellcor® sensor accuracy guide..................................61

Nellcor patents ...............................................62

Mechanical .....................................................62

Electrical .......................................................62

Environmental...................................................62

Guidance and manufacturer’s declaration .............................63

Emissions and immunity information..............................63

Patents ........................................................66

Identification label and serial numbering system ........................67

Firmware identification ............................................67

10 - Maintenance ..........................................69

Cleaning .......................................................69

Spot Vital Signs ..............................................69

Blood pressure cuff ...........................................69

Cables and pressure hose ......................................69

Temperature probe............................................70

SpO2sensor.................................................70

Battery removal and replacement....................................70

Masimo SpO2calibration check .....................................71

Nellcor SpO2functional check ......................................71

SpO2accessory disposal ..........................................71

Temperature calibration check ......................................71

A - Repair test specifications .................................73

General unit test .................................................73

A-D noise test ...............................................73

Leak test ...................................................73

Inflation test .................................................73

Dump test ..................................................73

viii Contents Welch Allyn Spot Vital Signs

Pneumatic calibration ..........................................74

Pneumatic accuracy test .......................................74

Valve control test .............................................74

Voltage calibration ............................................74

Blank mode current test........................................74

Back light (Idle) current test .....................................75

Valve/pump mode current test...................................75

Interface test ................................................75

Temperature option requirements ...................................75

Accuracy test ................................................75

Temperature probe test ........................................75

SpO2option requirements .........................................75

functional test ...........................................75

SpO

2

SpO

mode current test........................................75

2

Fail safe test ....................................................76

Over pressure test ............................................76

Over 15 mmHg ..............................................76

B - Supplies and Accessories ................................77

Latex-free blood pressure..........................................77

Pulse oximetry accessories and supplies ..............................78

Masimo ....................................................78

Nellcor .....................................................79

Temperature ....................................................80

Mounting ......................................................80

Extended warranty ...............................................80

Miscellaneous...................................................81

C - Miscellaneous Mounting Accessories.......................83

Wall mount kit (REF 4200-62) .......................................83

Mobile stand kit (REF 4200-60)......................................84

IV pole mount accessory (REF 4200-64)...............................85

Anti-theft kit (REF 4200-70) ........................................86

Transformer mounting plate accessory (REF 4200-75)....................87

IR dongle mounting accessory (REF 4200-170) .........................88

Warranty .................................................89

Spot Vital Signs..................................................89

Accessories ....................................................89

1

1

Introduction

Welch Allyn has updated the Spot Vital Signs from its original configuration; offering a
Pressure Preset option (Version 2, page 14) instead of a Print option (Version 1, page 13).
In addition, some Version 2 configurations offer Masimo SpO2technology.

Table 1. Version comparison

Function/Appearance Version 1

Available option Print Pressure Preset

Available SpO2capability Nellcor Masimo or Nellcor

Bezel and switch array color Black bezel/multi-colored

Warnings and cautions

Familiarize all operating personnel with the general safety information in this summary.
Specific warnings and cautions are also found throughout this manual. Such specific
warnings and cautions may not appear here in this summary.

(serial number less than

200705000)

switch array

Version 2

(serial number 200705000

and above)

Blue

General warnings

A warning statement in this manual identifies a condition or practice, which if not
corrected or discontinued immediately, could lead to patient injury, illness, or death.

WARNING The Welch Allyn Spot Vital Signs is designed for use by medical
clinicians. Although this manual may illustrate medical spot check techniques,
only a trained clinician who knows how to take and interpret a patient’s vital signs
should use this system.

WARNING The information in this manual is a comprehensive guide to the
operation of the Welch Allyn Spot Vital Signs. To achieve satisfactory results, you
should read the manual thoroughly before attempting to use the device.

WARNING Spot Vital Signs is not intended to take measurements on neonatal
patients. The AAMI SP10:1992 standard defines neonates as children 28 days or
less of age if born at term (37 weeks gestation or more); otherwise up to 44
gestational weeks.

WARNING The Welch Allyn Spot Vital Signs is not defibrillator proof.

2 Introduction Welch Allyn Spot Vital Signs

WARNING The Welch Allyn Spot Vital Signs is not intended for continuous
monitoring. Do not leave the device unattended while taking measurements on a
patient.

WARNING To ensure patient safety, use only accessories and supplies (i.e.,
blood pressure cuffs, hoses, temperature probes, SpO

sensors, etc.)

2

recommended for or supplied with Spot Vital Signs. Using unapproved
accessories with Spot Vital Signs can affect patient and/or operator safety.

WARNING This device is not suitable for use in the presence of a flammable
anesthetic mixture with air or oxygen or nitrous oxide. An explosion may result.

WARNING Avoid compression of the blood pressure cuff tubing or pressure
hose of the Welch Allyn Spot Vital Signs. Compression of the cuff tubing or
pressure hose may cause system errors to occur in the device.

WARNING Care should be taken to prevent water or other fluid from entering
any connectors on the device. Should this occur, the connectors should be dried
with warm air. All operating functions should then be checked for proper
operation.

WARNING Any Spot Vital Signs which has been dropped or damaged should be
checked by qualified service personnel to ensure proper operation prior to use. Do
not use the Welch Allyn Spot Vital Signs if you notice any signs of damage.
Contact the Welch Allyn Customer Service Department for assistance.

WARNING Every three months, inspect the temperature probe, SpO2cord, and
accessories for fraying or other damage. Replace as necessary.

WARNING There are no user-serviceable parts inside the device other than
battery replacement. Refer Spot Vital Signs to the Authorized Service Center.

WARNING The Spot Vital Signs should not be used on patients who are linked
to heart/lung machines.

WARNING The Spot Vital Signs does not operate effectively on patients who are
experiencing convulsions or tremors.

WARNING This device complies with current required standards for
electromagnetic interference and should not present problems to other
equipment or be affected by other devices. As a precaution, avoid using this
device in close proximity to other equipment.

WARNING This device is not intended for hand-held use during operation.

WARNING Welch Allyn recommends leaving the battery in the device,

regardless if the device is not used for long periods of time, since there is no
hazard of leaving the battery in the device.

WARNING Do not autoclave.

WARNING Welch Allyn is not responsible for the integrity of any mounting

installation. Welch Allyn recommends that the customer contact their Biomedical
Engineering Department or maintenance service to ensure professional
installation for safety and reliability of any mounting accessory.

Service Manual Introduction 3

Blood pressure warnings

WARNING To ensure pediatric blood pressure accuracy and safety, the Welch
Allyn Child Print Cuff (5200-03), the Welch Allyn Small Child Durable One-Piece
Cuff (5082-203-3), and the Welch Allyn Small Child Disposable One-Piece Cuff
(5082-93-3) are the smallest cuffs allowed for use with young children and infants.
The circumference of the child’s arm must fit within the range markings on the
cuff.

WARNING You may experience inaccurate blood pressure measurements if
blood pressure cuffs and/or hoses other than those provided by Welch Allyn for
the Spot Vital Signs are used.

WARNING Patients who are experiencing moderate to severe arrhythmias may
give inaccurate blood pressure measurements.

WARNING When several blood pressure measurements are taken on the same
patient, it is recommended that the blood pressure cuff site and extremity are
checked regularly for possible ischemia, purpura, and/or neuropathy.

WARNING Do not change the connector(s) on the blood pressure cuff tubing of
this device to luer type. Luer type connectors are commonly used in intravenous
infusion systems. Using the luer connectors on blood pressure cuff tubing
creates the risk that the blood pressure tubing could be mistakenly connected to
a patient's intravenous line, resulting in the introduction of air into the patient's
circulatory system.

4 Introduction Welch Allyn Spot Vital Signs

SpO2warnings

WARNING Only use Spot Vital Signs with Masimo or Nellcor SpO2option with
Masimo or Nellcor brand sensors and accessories, respectively. Using the wrong
or unapproved sensors or cables may cause improper performance.

WARNING The SpO2sensors and extension cables are intended for use only for
pulse oximetry measurements. Do not attempt to connect these cables to a PC
or any similar device.

WARNING Before use, carefully read the sensor’s directions for use, including
all warnings, cautions, and instructions.

WARNING Do not use a damaged sensor or SpO2cable. Do not use a sensor
with exposed optical components.

WARNING Tissue damage can be caused by incorrect application or duration of
use of an SpO2sensor. Inspect the sensor site as directed in the sensor’s
Directions for Use.

WARNING Do not use the sensors during magnetic resonance imaging (MRI)
scanning. Induced current could potentially cause burns. The pulse oximeter may
affect the MRI image, and the MRI unit may affect the accuracy of the pulse
oximetry measurements.

WARNING Certain ambient environmental conditions, sensor application errors,
and certain patient conditions may affect SpO2readings and pulse signal.

WARNING Do not immerse the sensor or patient cables in water, solvents, or
cleaning solutions (the sensors and connections are not waterproof). Do not use
irradiation, steam, or ethylene oxide for sterilization.

WARNING Do not use the SpO2cable or power cord to lift the unit because the
cable or cord could disconnect from the unit, causing the unit to drop on the
patient.

WARNING The SpO2in the Welch Allyn Spot Vital signs is not intended for use
as an apnea monitor.

WARNING Consider the SpO2an early warning device. As a trend toward
patient deoxygenation is indicated, use laboratory instruments to analyze blood
samples to completely understand the patient’s condition.

Service Manual Introduction 5

Temperature warnings

WARNING Single-use, disposable probe covers, available from Welch Allyn, limit
patient cross-contamination. The use of any other probe cover or the failure to
use a probe cover may produce temperature errors and is specifically not
recommended.

WARNING Use only oral probes (blue cap) for taking oral and axillary
temperatures. Use only rectal probes (red cap) for taking rectal temperatures. The
use of the wrong probe may produce temperature errors.

WARNING Do not allow the tip of the temperature probe to come into contact
with any heat source (e.g., hands or fingers) prior to taking a temperature
measurement. If this occurs, discard the probe cover and start the temperature
determination again.

WARNING Long-term continuous monitoring beyond three to five minutes is
not recommended in any mode.

IR communications port warnings

General cautions

A caution statement in this manual identifies a condition or practice, which if not
corrected or discontinued immediately, could lead to equipment failure, equipment
damage, or data loss.

WARNING The Welch Allyn Spot Vital Signs contains an infrared
communications port for isolated communications with external devices. The port
is located on the side of the device to preclude direct eye contact on a continual
basis when viewing the display. As a precaution, do not look directly into the
infrared port during operation.

Caution If the accuracy of any measurement is in question, check the patient's
vital sign(s) by an alternate method, then check to make sure the device is
functioning properly.

Caution Ensure the device is placed on a secure surface or use one of the
optional mounting accessories.

Caution Do not place fluids on the device.

6 Introduction Welch Allyn Spot Vital Signs

Blood pressure cautions

Caution Extremity and blood pressure cuff motion should be minimized during
blood pressure determinations.

Caution If the blood pressure cuff is not at heart level, the difference in reading
due to the hydrostatic effect should be noted. The value of 1.80 mmHg must be
added to the displayed reading for every inch (2.5 cm) above heart level. The
value of 1.80 mmHg must be subtracted from the displayed reading for every
inch (2.5 cm) below heart level.

Caution Proper blood pressure cuff size and placement is essential to the
accuracy of the blood pressure determination.

Caution When measuring blood pressure on children younger than 3 years of
age, it is recommended that the Pressure Preset (initial inflation pressure) be set
at 160 mmHg or lower.

SpO

cautions

2

Caution The pulse oximeter is calibrated to determine the percentage of
arterial oxygen saturation of functional hemoglobin. Significant levels of
dysfunctional hemoglobin such as carboxyhemoglobin or methemoglobin may
affect the accuracy of the measurement.

Caution Physiological conditions, medical procedures, or external agents that
may interfere with the pulse oximeter’s ability to detect and display
measurements include dysfunctional hemoglobin, arterial dyes, low perfusion,
dark pigment, and externally applied coloring agents such as nail polish, dye, or
pigmented cream.

Caution Some sensors may not be appropriate for a particular patient. If at least
15 seconds of perfusion pulses cannot be observed for a given sensor, change
sensor location or sensor type for perfusion to resume.

Caution When selecting a sensor, consider the patient’s weight and activity
level, the adequacy of perfusion, the available sensor sites, the need for sterility,
and the anticipated duration of monitoring.

Temperature cautions

Caution The Welch Allyn Spot Vital Signs is FDA cleared to measure the axillary
temperature in Normal Mode for children under the age of 4. Normal Mode
axillary temperatures may not be accurate on older children or adults. THE

WELCH ALLYN SPOT VITAL SIGNS IS NOT INTENDED TO BE USED ON
NEONATAL PATIENTS.

Service Manual Introduction 7

Electrostatic discharge (ESD)

Electrostatic discharge is a sudden current flowing from a charged object to another
object or to ground. Electrostatic charges can accomulate on common items such as
foam drinking cups, cellophane tape, synthetic clothing, untreated foam packaging
material, and untreated plastic bags and work folders, to name only a few.

Electronic components and assemblies, if not properly protected against ESD, can be
permanently damaged or destroyed when near or in contact with electrostatically charged
objects. When you handle components or assemblies that are not in protective bags and
you are not sure whether they are static-sensitive, assume that they are static-sensitive
and handle them accordingly.

• Perform all service procedures in a static-protected environment. Always use
techniques and equipment designed to protect personnel and equipment from
electrostatic discharge.

• Remove static-sensitive components and assemblies from their static-shielding bags
only at static-safe workstations - a properly grounded table and grounded floor mat ­and only when you are wearing a grounded wrist strap (with a resistor of at least 1
megohm in series) or other grounding device.

• Use only grounded tools when inserting, adjusting, or removing static-sensitive
components and assemblies.

• Remove or insert static-sensitive components and assemblies only with monitor
power turned off.

• Insert and seal static-sensitive components and assemblies into their original static­shielding bags before removing them from static-protected areas.

Always test your ground strap, bench mat, conductive work surface, and ground cord
before removing components and assemblies from their protective bags and before
beginning any disassembly or assembly procedures.

8 Introduction Welch Allyn Spot Vital Signs

Symbols

The following symbols are associated with the Spot Vital Signs.

Safety symbols

Agency symbols

Identifies information within the
manual to avoid injury or equipment
failure.

Type BF Equipment Internally Powered, Lead Acid

Handle with Care Transport Temperature

Storage Humidity Recycle

Class II Equipment Equipment is not protected against

Do not dispose of this product as unsorted municipal waste. Prepare this product for reuse or
separate collection as specified by Directive 2002/96/EC of the European Parliament and the
Council of the European Union on Waste Electronic and Electrical Equipment (WEEE). If this
product

is contaminated, this directive does not apply.

For more specific disposal information, see www.welchallyn.com/weee,
or contact Welch Allyn Customer Service at [phone].

Mode of Operation: Continuous

Pb

IPXØ

Caution: consult accompanying
documents

Battery

the ingress of liquid.

C

166292

0297

EC REP

CERTIFIED TO:
CAN/CSA STD C22.2 NO. 601.1

US

CONFORMS TO:
UL STD 60601-1

IEC 60601-1

The CE mark on this product indicates that it has been tested to and conforms with
the provisions noted within the 93/42/EEC Medical Device Directive.

European Regulatory Manager
Welch Allyn Ltd.
Navan Business Park • Dublin Road • Navan, County Meath, Republic of Ireland
Tel.: [phone] • Fax: [phone]

9

2

Overview

Purpose and scope

The Spot Vital Signs Service Manual is intended as a reference for maintenance and repair
to the field replaceable unit (FRU) level and are listed on page 55. This manual provides
the technical qualified service person with troubleshooting information, repair procedures,
and calibration and performance verification instructions. A technical overview of the Spot
subsystems is provided as an introduction to the device’s circuitry and pneumatics.

This manual is intended for the technical qualified service person. Service training classes
on Welch Allyn’s products are available. Contact Welch Allyn Technical Service for
information.

Other applicable documents

The Spot Vital Signs Directions for Use manual is also available. Refer to this document for
information other than maintenance and repair.

Welch Allyn 9600 Plus Calibration Tester Directions for Use - for all models.

Masimo Directions for Use - for models 42M0B and 42MTB

Nellcor Directions for Use - for models 42N0B and 42NTB

10 Overview Welch Allyn Spot Vital Signs

Contents checklist

Unpack the Welch Allyn Spot Vital Signs and applicable accessories, identify each item
with the following checklist and inspect for missing items. Retain the shipping materials in
the event of shipping damage or for return, if necessary, to Welch Allyn for repair or
warranty service. All Spot Vital Signs include the following components:

Spot Vital Signs Device. This device automatically measures and displays blood

pressure and pulse rate. Options include thermometry and pulse oximetry.

Directions for Use Manual. Read this manual thoroughly before using Spot Vital Signs.

Save this manual for reference.

Warranty Card. This card validates the Spot Vital Signs warranty. Fill out the warranty

card and mail it today.

Blood Pressure Cuff. Latex free blood pressure cuff with connectors. Other size cuffs are

available separately.

Blood Pressure Hose. Latex-free pressure hose with connectors to attach various sizes of

blood pressure cuffs to the Spot Vital Signs.

AC Power Transformer and Cord Assembly. Provides power to the Spot Vital Signs and

charges the internal battery.

Quick Reference/Error Code Card. Attach this quick operating and error code guide to

the device handle, mobile stand, or wall mount.

Possible attachments

Spot Vital Signs may include the following items based on the model and accessories
purchased:

SureTemp Temperature Probe and Covers. One oral temperature probe (blue cap) and

one box of 25 single-use, disposable probe covers.

Pulse Oximetry (SpO2). The finger clip SpO2sensor and extension cable are for use

with adult and pediatric patients. Other sensors are available separately.

Service Manual Overview 11

Service

Caution Unauthorized repairs will void the warranty.

A Welch Allyn Service Center must perform all repairs on products under warranty.
Unauthorized repairs will void the warranty. Qualified electronics personnel or a Welch
Allyn Service Center should repair 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 telephone support is available on
normal business days.

If you are advised to return a product to Welch Allyn for repair or routine maintenance,
schedule the repair with the service center nearest you.

Before returning a product for repair, you must obtain authorization from Welch Allyn.
Service personnel will give you a Service Notification number. Returns without a Service
Notification number will not be accepted for delivery.

If you need to return the Spot Vital Signs for service:

• Remove all hoses, cables, sensors, power cords, and any ancillary products not
associated with the problem.

• Whenever possible, use the original shipping carton and packing materials.

• Include a packing list and the Welch Allyn Service Notification number.

• Note the Service Notification number on the outside of your shipping container.

It is recommended to insure all returned goods. The sender may initiate any claims for
loss or damage to the product.

Field replacement units

Included with the Service Manual is a complete list of field replacement units. Order
spare parts from your local Welch Allyn Service Center.

Service loaners

Service loaners are provided, on request, if a Welch Allyn Service Center provides repair
service. Loaners for products repaired while under the original warranty, or while under
service contract, are provided free of charge and are shipped within 48 hours of
notification of need.

For service repairs outside of warranty or contract, loaners are available for a nominal
charge and shipment is subject to availability. Loaners are shipped pre-paid; however, this
charge is added to the service charges.

12 Overview Welch Allyn Spot Vital Signs

Service intervals

Verify Spot Vital Signs annually for blood pressure calibration, temperature, and SpO
accuracy.

Spot Vital Signs configurations

Table 2. Available Versions of Spot Vital Signs

REF Description

4200B Spot Vital Signs with blood pressure only

420TB Spot Vital Signs with blood pressure and SureTemp thermometer

42MOB Spot Vital Signs with blood pressure and Masimo SpO

42NOB Spot Vital Signs with blood pressure and Nellcor SpO

42MTB Spot Vital Signs with blood pressure, SureTemp thermometer, and Masimo SpO2*

42NTB Spot Vital Signs with blood pressure, SureTemp thermometer, and Nellcor SpO

* Version 2 configurations only.

2

*

2

2

2

Service Manual Overview 13

Controls

Figure 1. Spot Vital Signs with SureTemp Plus Thermometer (Version 1)

Thermometer Eject Button: push to

remove used temperature probe cover.

Next Patient/Clear/Cancel Button:

• active display: clears the display.

• in Standby Mode: recalls the last patient
information. Pressing a second time clears
the screen.

• cancels an active blood pressure
measurement and deflates the cuff.

Printer: press to print the
measurements (Version 1 only).

SS

DIA

SpO

mm g

a

mm g

a

2

min

Mode Button:

• holding for 2 seconds while
the display is activeturns off/on
the backlight.

• in Standby Mode, recalls the
last patient information.

• with the temperature probe
removed from the probe holder,
switches the temperature from
Oral to Axillary Mode.

MODE

M
P

Blood Pressure Start/Stop Button:
initiates a new blood pressure cycle.
Pressing again cancels an active blood
pressure measurement and deflates the cuff.

C

Pressure Hose Connector: port for blood
pressure hose.

Power Button: controls power to the device.

14 Overview Welch Allyn Spot Vital Signs

Figure 2. Spot Vital Signs with SureTemp Plus Thermometer (Version 2)

Thermometer Eject Button: push to

remove used temperature probe cover.

Next Patient/Clear/Cancel Button:

• active display: clears the display.

• in Standby Mode: recalls the last patient
information. Pressing a second time clears
the screen.

• cancels an active blood pressure
measurement and deflates the cuff.

Blood Pressure Start/Stop Button:
initiates a new blood pressure cycle.
Pressing again cancels an active blood
pressure measurement and deflates the cuff.

Pressure Preset Button: press
to change the factory inflation
default for one reading (Version 2
only).

SS

DIA

SpO

mm g

a

mm g

a

2

min

Mode Button:

• holding for 2 seconds while
the display is activeturns off/on
the backlight.

• in Standby Mode, recalls the
last patient information.

• with the temperature probe
removed from the probe holder,
switches the temperature from
Oral to Axillary Mode.

Spot Vital Signs

Pressure Hose Connector: port for blood
pressure hose.

Power Button: controls power to the device.

Service Manual Overview 15

LCD (liquid crystal display)

The LCD may indicate any of the following: systolic blood pressure (mmHg or kPa),
diastolic blood pressure (mmHg or kPa), temperature (ForC), thermometer mode,
pulse rate, pulse signal level, SpO2, MAP (mmHg or kPa), and battery charge level.

.

Option no longer available.

Date/Time: indicatesthat the

user must set/re-set the
current date and time.

Measurement Indicator:
displays the blood
pressure, SpO2, or
temperature icon as Spot
Vital Signs is taking the
respective measurement.

Thermometer Mode icon:

shows temperature mode (for
devices with SureTemp only).

Temperature Probe Problem:
indicates a temperature probe problem
(for devices with SureTemp only).

mm g

SS

mm g

DIA

SpO2Display: shows the percent saturation of arterial

SpO

2

hemoglobin (for devices with SpO

Pulse Display: shows the pulse rate.

min

Temperature Display and Indicator: shows the
temperature in Fahrenheit or Celsius (for devices with
SureTemp only).
Monitor Mode Temperature: indicates the thermometer is

M
P

in Monitor Mode (for devices with SureTemp only).

Out-of-range indicator: shows the patient’s temperature
reading above or below the measurement range limits (for
devices with SureTemp only).

Icon not used.

Battery Level indicator: displays the battery charge level.

Battery Charging: indicates the device is

powered through the AC power transformer.

Systolic and Diastolic display:

if MAP is turned on, the screen
toggles between the systolic and
diastolic values, and the word
“MAP” and the MAP value.

only).

2

16 Overview Welch Allyn Spot Vital Signs

Connections

Use the following instructions to connect the blood pressure hose, thermometer probe,
and optional attachments to the Spot Vital Signs.

Figure 3. Spot Side and Rear Panel Connections

Probe Cover Storage Compartment: storage

space for one box of probe covers.

SpO2Cable Connection Port

(for units with SpO

Temperature Probe Holder:
storage space for the
temperature probe when not in
use (for devices with SureTemp
only).

Suretemp Thermometer
Connection Port (for

devices with SureTemponly).

2

only)

Battery Door

IR Data Interface:

Port for
communicating with
an external device.

DC Power
Connection Port

Threaded Insert: to mount the

Spot Vital Signs to a mobile stand.

Service Manual Overview 17

Blood pressure hose and cuff connections

Have available the Spot Vital Signs, blood pressure cuff, and blood pressure hose.

1. Inspect the pressure hose; note that one end has a connector fitting and the other
end does not. Attach the end without the connector fitting to the pressure hose
connector (see page 14). Verify that the pressure hose is completely inserted over the
connector and that the fit is snug.

2. Join the other end of the pressure hose to the blood pressure cuff pneumatic tubing.
Twist the connectors together until finger-tight. DO NOT OVERTIGHTEN.

Temperature probe connection

The Welch Allyn Spot Vital Signs is available with two probes — one for oral/axillary
temperatures (blue cap), and one for rectal temperatures (red cap). The rectal probe is an
accessory item that is ordered separately.

Press down on the tab on top of the connector and insert the connector into the
temperature probe connector port on the back of the Spot Vital Signs. The probe
connector only fits into Spot Vital Signs one way. Verify the connector clicks into place.
Insert the temperature probe into the probe holder on the top of the Spot Vital Signs.

To remove the temperature probe, press down on the connector tab and lift out.

SpO2sensor

Spot Vital Signs is available with a wide variety of SpO2sensors and ships with a reusable
finger sensor and extension cable. All other sensors are accessory items that are sold
separately.

1. Align the shape and pin configuration of the extension cable connector to the SpO
cable connection port on the top side of the Spot Vital Signs device.

2. Push the connector firmly into the SpO2cable connection port.

3. Align the opposite end of the extension cable to the sensor cable connector and
firmly push them together.

Note

Use only Masimo or Nellcor SpO2sensors and accessories with the Spot Vital
Signs with Masimo or Nellcor configurations, respectively.

Quick reference card

Attach the Quick Reference Card to the Spot handle, mobile stand, or wall mount using
the supplied plastic cable tie.

2

18 Overview Welch Allyn Spot Vital Signs

DCpower connection

Note

Use the Spot Vital Signs with battery power (after charging the battery) or battery and DC
power supply.

1. Insert the round transformer connector into the DC power connection port on the left

2. Insert the line cord into the line connector on the transformer then plug the power

To assure proper electrical isolation, replace the AC power transformer/charger
using only the Welch Allyn specified part (REF 5200-101A, 5200-103A, 5200­103Z).

of the Spot Vital Signs (see page 16).

cord on the transformer into the AC main power source to charge the battery.

Charging the battery

CHARGE THE BATTERY FOR SIXTEEN (16) HOURS PRIOR TO INITIAL USE.

Attach the DC power transformer to the Spot Vital Signs then plug the transformer into
the AC main power source.

While charging, the charger icon remains on and the battery icon segments continuously
sequence. When the battery is fully charged, all battery icon segments display.

As the battery voltage level drops the segments turn off from left to right. If the Spot Vital
Signs is not plugged in to charge when the second last segment is turned off the Spot
Vital Signs issues a warning beep. As the voltage level drops to compromise
measurements an error beep is heard and all other display fields turn off. Spot Vital Signs
beeps at increasingly frequent intervals until it finally powers itself off.

If not used for extended periods of time then recharge the battery.

Standby mode

Standby Mode conserves battery power. When the device is powered up, but has not
been used for 2 minutes, it goes into Standby Mode. “Z Z Z” shows across the top of
the display with no backlight.

To bring the Spot Vital Signs out of Standby Mode, press the Mode or Pressure Preset
button or begin a patient measurement.

19

3

Functional overview

This functional verification procedure helps to confirm the proper operation of the Spot
Vital Signs and options. This procedure supports the requirements of routine preventative
maintenance. It is not necessary to disassemble the Spot Vital Signs to perform this
procedure.

For the calibration procedures, see “Calibration” on page 25. If the Spot Vital Signs fails
certain functional tests or a circuit board is replaced, the device may require calibration. It
is necessary to disassemble the Spot Vital Signs for calibration.

Always perform this functional verification procedure after performing any calibration. This
procedure contains additional tests that are not included in calibration procedures.

Power on/off and system check procedure

Press the Power button to turn the device on or off. Upon each power up, all the LCD
segments in each display turn on briefly and two beeps sound. If the internal self-check is
successful, the display shows its normal functions (see page 15) and the device is ready
for operation. If the self-check fails, an error code is shown in the on the display.

To turn the unit off, press the Power button.

Note

Turning the unit off erases measurement data.

20 Functional overview Welch Allyn Spot Vital Signs

Internal configuration mode

You can change several device operating parameters in the Internal Configuration Mode.
When changed, these settings become the default power-up settings. You will also see
non-changeable device configurations for technical service purposes.

To enter the Configuration Mode:

1. Turn the Spot Vital Signs off.

2. Press and hold the Power - Blood Pressure Start/Stop buttons. The device enters
the Internal Configuration Mode and displays the software version.

3. Press the Mode button to cycle through the Internal Configuration menu until you see
the menu option displayed on the screen.

4. Use the Next Patient/Clear/Cancel or Blood Pressure Start/Stop button to change
the default setting.

5. Press the Mode button once to save the change and press the Power button to exit
the Internal Configuration Mode.

Table 3. Configuration Menu Options

Setting Description

Blood Pressure Calibration
Displays “Cal”

Inflation Pressure Preset Level
Displays “PrP”

Pressure Preset Level
Displays “PrP“

Backlight
Displays “BLT”

Mean Arterial Pressure
Displays “MAP”

Date/Time Changes or updates the actual date and time.

Temperature Scale
Displays “TMP MOD”

Blood Pressure Units
Displays “BP”

Battery Readings
Displays “BAT”

Battery Life
Displays “LFE”

Prepares the Spot Vital Signs for calibration. Only qualified personnel should verify the
Spot Vital Signs blood pressure calibration. For more details, see “Blood pressure
calibration” on page 27.

120, 140, 160, 180, 200, 240, 280 mmHg. Factory default is 160 mmHg.

On or off. Disables or enables the front panel Pressure Preset button.

On or off.

On or off.

Fahrenheit (°F) or Celsius (°C) Normal Mode / Fahrenheit (°F) or Celsius (°C) Monitor
Mode

mmHg or kPa.

Displays the total battery voltage.

Total number unit measurements. Displayed information only; operator cannot change.

Service Manual Functional overview 21

Functional verification

Complete all steps in this section before returning a Spot Vital Signs for service.

Verify that the pressure meter used (if not specified by this service manual) is calibrated
and the calibration certificate of the meter is traceable to NIST. The pressure meter
testing the Spot Vital Signs must have an accuracy of better than "3 mmHg.

Subtract the rated accuracy of the pressure measurement standard from the "3 mmHg
rated accuracy of Spot Vital Signs. This is the pass/fail criteria to determine if the device
is within calibration. If the differences between Spot Vital Signs and the pressure
measurement standard are within the pass/fail criteria at all specified pressures, then
the device is within calibration.

All test specifications are found in Appendix A.

1. Use the pneumatic tubing to connect the Spot Vital Signs to the test station (page

26). Disconnect the battery and connect the power supply. Verify the IR Data

Interface is free from obstacles.

2. Open the Spot Vital Signs repair software and verify the computer is communicating
with the Spot Vital Signs.

3. Hold down the Blood Pressure Start/Stop button while powering on the Spot Vital
Signs. The Spot Vital Signs enters the configuration test mode. After the LCD
displays the software versions press the Mode button to display CAL. Spot Vital Signs
automatically performs an auto zero.

4. Attach a pneumatic clamp to the 100 cc and the 250 cc cylinder and then remove the
clamp from the 500 cc cylinder.

5. Select Test/Calibration on the computer screen. The dialog box displays the Spot
Vital Signs manometer and battery readings and the valve and pump status.

To verify the blood pressure calibration:

1. Push the Spot Vital Signs Blood Pressure Start/Stop button to close the valve.

2. Pump the hand bulb to the set the pressures: 0 mmHg, 50 "5 mmHg, 150 "5 mmHg,
250 "5 mmHg. Verify each pressure is within "3 mmHg of the target pressure (except
for 0 mmHg which should be within "1.0 mmHg).

3. Press the Mode button until the LCD window reads “bat.”

To verify the voltage reading:

1. Set the power supply to 5.6 (+0.3 / -0.0 Vdc).

2. Verify that the voltage reading meets the test specification.

3. Return the power supply to 6.5 Vdc (+0/- 0.25 Vdc) upon completion of this test.

4. Select OK to exit the Test Calibration dialog box.

22 Functional overview Welch Allyn Spot Vital Signs

NOTE: The pass/fail criteria for the blood pressure calibration check depends upon the
accuracy of the pressure measurement standard used.

• If the pressure measurement standard used is rated with an accuracy of ±0.1 mmHg,
the pass/fail criteria is ±2.9 mmHg in order to guarantee that the instrument under
test is within ±3 mmHg of NIST.

• If the pressure measurement standard used is rated with an accuracy of ±1.0 mmHg,
the pass/fail criteria is ±2.0 mmHg in order to guarantee that the instrument under
test is within ±3 mmHg of NIST

Temperature functional check

The 9600 Plus Calibration Tester takes approximately 20 minutes to heat to the lowest
setting. When testing several thermometers at all three temperatures, it is
recommended to test all probes at one Calibration Set Point Temperature before
proceeding to the next Calibration Set Point Temperature.

To further expedite testing start at the lowest Calibration Set Point Temperature. The 9600
Plus Calibration Tester does not have an internal fan, this causes a longer cool down time
than warm up time.

Refer to the 9600 Plus Calibration Tester Directions for Use manual for specific
information regarding the LCD window or the control buttons.

1. Choose the proper mains plug insert and slide it over the two prongs in the power
converter.

Figure 4. Power Adapter and Mains Plug Inserts

Two prongs in the
power adapter

11.8593./US

(US)

11.8593./UK

(UK)

11.8593./AUS

(AUS)

11.8593./EU

(EU)

UKUS EUAUS

2. Plug the power adapter into the 9600 Plus Calibration Tester (Figure 4) and the
opposite end into a wall outlet.

3. Place the 9600 Plus Calibration Tester on a level surface away from sunlight, drafts,
and other sources of heat or cold.

4. Observe the Set Point Mode in the upper left hand corner of the LCD display. If the
unit displays a "D", it is in Default Mode and will heat to the lowest Set Point
Temperature. If you do not want to conduct testing at this Set Point Temperature,
press and hold the Temperature Selection button to select the desired setting. The
temperature display will flash before staying on continuously to indicate the 9600 Plus
Calibration Tester has stabilized and is ready for use.