Welch Allyn Spot Vital Signs LXi User manual

Welch Allyn Spot Vital Signs LXi
Service Manual
Enter
7 21
7 3
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BP
AM
SYS
TEMP
SpO2 PULSE
/min
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mmHg
F
DIA
%
Weight
Respiration
Pain
4 WEST
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Patient ID 0123456789
Height
Send/Next Reading
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7 21
7 3
5
8
9
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01
BP
4 WEST
AM
SYS
TEMP
SpO2 PULSE
/min
mmHg
mmHg
Reading
F
DIA
%
Enter
Patient ID 0123456789
Weight
Respiration
Pain
Height
Send/Next Reading
Clear
BR A Un

Welch Allyn Spot Vital Signs LXi
Service Manual

ii Welch Allyn Spot Vital Signs LXi
Copyright 2008 Welch Allyn. All rights are reserved. No one is permitted to reproduce or duplicate, in any
form, this manual or any part thereof without 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.
Braun ThermoScan®is a registered trademark of the Braun Company.
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 2008 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 #4500-89
Manual Material No. 704432 Ver. D
Printed in USA
USA [phone]
+ 1 315 685 4560
Australia [phone]
Canada [phone] China [phone]
European Call Center [phone] France + 331 6009 3366
Germany [phone] Japan [phone]
Latin America [phone] Netherlands [phone]
Singapore [phone] South Africa [phone]
United Kingdom [phone] Sweden [phone]
Welch Allyn
4341 State Street Road
Skaneateles Falls, NY
13153 USA
European Regulatory Manager
Welch Allyn Ltd.
Navan Business Park
Dublin Road
Navan, County Meath, Republic of Ireland
Tel.: + 3 5 3 4 6 9 0 6 770 0
Fax: [phone]
EC REP

Service Manual Contents iii
Contents
1 - Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Electrostatic Discharge (ESD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 - Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Other Applicable Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Miscellaneous Mounting Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mobile Stand Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Radio Mounting Accessory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Barcode Reader Mounting Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Spot Vital Signs LXi Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Display Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3 - Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Internal Configuration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4 - Spot Vital Signs LXi Technical Overview. . . . . . . . . . . . . . . . . . . . . 35
System Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
SpO2Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Radio Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Bar Code Scanner Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Printer Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Interconnect Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5 - Maintenance and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Spot Vital Signs LXi Firmware Upgrade CD . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Spot Vital Signs LXi Radio Configuration CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Product Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6 - Calibration and Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Te r m s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 9
Pneumatic test assembly setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Voltage Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Pressure verification test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

iv Contents Welch Allyn Spot Vital Signs LXi
Blood pressure calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Functional tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Te m p er a tu re Fu n ct i o n a l C he ck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8
Masimo SpO2 Functional Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Nellcor SpO2 Functional Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
7 - Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
SpO2Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Patents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Radio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Guidance and Manufacturer’s Declaration For Spot Vital Signs LXi Radio . . . . . 69
8 - Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Radio Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Service Work Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Radio Configuration Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
9 - Supplies and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Blood Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Te m p er a tu re . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8
Pulse Oximetry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Miscellaneous. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Service Contracts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
10 - Field Replaceable Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
11 - D i s a s s e m b l y a n d Re p a i r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
To o l l is t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Key Pad Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
SpO2Circuit Board Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Blood Pressure Circuit Board Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
LCD Inverter Ballast Board Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
LCD Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Pump Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
RS232-Communication Circuit Board Disassembly . . . . . . . . . . . . . . . . . . . . . 110
Fan and Power Circuit Board Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Thermometry Circuit Board Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Service Manual Contents v
12 - Repair Test Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
General Unit Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Te m p er a tu re O p ti o n R e q u i r em e nt s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
SpO2Option Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Fail Safe Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

vi Contents Welch Allyn Spot Vital Signs LXi

1
1
Safety Summary
Introduction
All users of the Spot Vital Signs LXi must read and understand the safety summary, and
all additional specific warnings and cautions located throughout the documentation.
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.
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.
These warnings pertain entirely to Spot Vital Signs LXi.
WARNING The information in this manual is a comprehensive guide to the
operation of Spot Vital Signs LXi. For best results, read this manual thoroughly
before using the device.
WARNING Spot Vital Signs LXi is designed for medical clinician use. 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
device.
WARNING Spot Vital Signs LXi is not intended for use in environments that are
without health care practitioner supervision.
WARNING Spot Vital Signs LXi is not intended for continuous monitoring. Do
not leave the device unattended while taking measurements on a patient.
WARNING To e n s u r e d a t a i n t e g r i t y, s a ve r e a d i n g s a n d c l e a r t h e S p o t V i t a l S i g n s
LXi display between patients.
WARNING The Spot Vital Signs LXi is not defibrillator proof.
WARNING Spot Vital Signs LXi is not intended for use during patient transport.
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.

2Safety Summary Welch Allyn Spot Vital Signs LXi
WARNING To e n s u re pa t i e n t safe t y, u s e o nly a c c e ss o r i e s a n d s u p pli e s ( i . e .,
cuffs, hoses, temperature probes, SpO2sensors, etc.) recommended for or
supplied with Spot Vital Signs LXi. Using unapproved accessories with Spot Vital
Signs LXi can affect patient and/or operator safety.
WARNING Take care to prevent wate r or ot her fluid from entering any
connectors on the device. Should this occur, dr y the connectors with warm air.
Check the accuracy of all operating functions.
WARNING Every three months, inspect the blood pressure cuff, SpO2 cable,
and other accessories for fraying or other damage. Replace as necessary.
WARNING Do not use Spot Vital Signs LXi on patients who are on heart/lung
machines.
WARNING Electric shock hazard. There are no user-serviceable parts inside Spot
Vital Signs LXi other than battery replacement (see “Battery Replacement” on
page 46). An operator may only perform maintenance procedures specifically
described in this manual. For service, refer the device to an Authorized Service
Center.
WARNING This device is not intended for hand-held use during operation.
WARNING Do not autoclave.
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 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.
WARNING The Spot Vital Signs LXi consists of high-quality precision parts.
Protect it from severe impact and shock. A qualified service technician must
check any Spot Vital Signs LXi that is dropped or damaged for proper operation
prior to further use. Do not use the Spot Vital Signs LXi if you notice any signs of
damage. Contact the Welch Allyn Customer Service Department for assistance.
WARNING Do not use an SpO2finger clip sensor and a blood pressure cuff
simultaneously on the same limb. Doing so may result in inaccurate pulse rate
and perfusion readings.
WARNING All signal input and output (I/O) connectors are intended for
connection of only devices complying with IEC 60601-1, or other IEC standards
(for example, IEC 60950) as appropriate to the device. Connecting additional
devices to the Spot LXi may increase leakage currents. To maintain operator and
patient safety, it is necessary to consider the requirements of IEC 60601-1-1.
WARNING For proper patient electrical isolation, use only a Welch Allyn power
supply (4500-101A) to charge Spot Vital Signs LXi and its attached peripheral
devices. Do not use an external charger while the printer or weight scale is
attached to Spot LXi.