Welch Allyn Spot Vital Signs User manual

Welch Allyn Spot Vital Signs
Service Manual
SpO
2
SS mm g
a
min
DIA mm g
a
Spot Vital Signs

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:
Reorder No. 4200-89E
Manual Material No. 718448 Ver A
Printed in USA
USA [phone] Australia [phone]
Canada [phone] China [phone]
European Call Center [phone] France [phone]
Germany [phone] Japan [phone]
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Welch Allyn
4341 State Street Road
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Regulatory Affairs Representative
Welch Allyn Limited
Navan Business Park
Dublin Road
Navan, County Meath, Republic of Ireland
EC REP

Service Manual iii
Revision Information
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).
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,
Section 2 regarding part numbers, Section 3 regarding error
codes, and updates to the drawings
JDB JDB
9/12/02 C Added New PCB layout and schematic for Spot Extensions.
Added tool SRC-MAX to tool list in Section 2.3. Removed old PCB
and Old SpO2PCB and replaced with new Main PCB and New
SpO2PCB in section 2.4. Changed section 4.7 to cover both Spot
and Spot Extensions SpO2PCB removal and replacement.
Changed section 5.8 to cover both Spot and Spot Extension SpO2
testing. General Spelling and grammar clean up.
JDB JDB
02/02/03 D Arden document release to SKF. Updated USA Service Center
contact information.
JDB DLK
05/01/03 E Correction to tools required for service. Corrected General
Information phone numbers.
DLK DLK
09/16/03 F Updates repair BOM. Updated Accessories. Re-formated manual
to meet Welch Allyn service manual work instructions.
DLK DLK
12/12/03 G Correction to page numbering and to voltage calibrations. Re-
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.
DLK RJS
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 SpO2feature and
updated repair parts lists.
AMJ FL
2010/11/05 L Changed part number for SPOT Repair Tool SW CD from 130S57E
to 716948 on pages 39 and 52 . Updated copyright page with
latest service phone numbers and combined Title pages and
Front cover pages.
KMR NEA
2012/04/26 A New Material Number taken out 718448. CE mark removal KMR GB

iv Welch Allyn Spot Vital Signs

v
Contents
1 - Introduction .............................................1
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
SpO2functional test ...........................................75
SpO2mode current test........................................75
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.
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.
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.
Table 1. Version comparison
Function/Appearance Version 1
(serial number less than
200705000)
Version 2
(serial number 200705000
and above)
Available option Print Pressure Preset
Available SpO2capability Nellcor Masimo or Nellcor
Bezel and switch array color Black bezel/multi-colored
switch array
Blue
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.

2Introduction 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, SpO2sensors, etc.)
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.