Welch Allyn Connex User manual

Welch Allyn Connex®Integrated
Wall System
Service manual
Software version 2.3X

© 2017 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 this
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, Connex, SureTemp, and SureBP are registered trademarks of Welch Allyn.
Oridion is a registered trademark of Oridion Medical 1987 Ltd. No implied license. Possession or
purchase of this device does not convey any express or implied license to use the device with
unauthorized CO2 sampling products which would, alone, or in combination with this device, fall within
the scope of one or more of the patents relating to this device and/or CO2 sampling products.
RRa is a trademark of; and SET, SpHb, rainbow, and Masimo are registered trademarks of Masimo
Corporation. Possession or purchase of a Masimo-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 is a registered trademark of Covidien, PLC.
Braun and ThermoScan are registered trademarks of Braun GmbH.
Nonin is a registered trademark of Nonin Medical, Inc.
Bluetooth is a registered trademark of Bluetooth SIG.
Welch Allyn has provided Clinical Dynamics of CT, LLC, the calibration tables (CALTables) for use in its
AccuPulse and AccuSim NIBP Simulators. For more information, click this link.
Software in this product is Copyright 2017 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.
This product may contain software known as “free” or “open source” software (FOSS). Welch Allyn
uses and supports the use of FOSS. We believe that FOSS makes our products more robust and secure,
and gives us and our customers greater flexibility. To learn more about FOSS that may be used in this
product, please visit our FOSS website at www.welchallyn.com/opensource. Where required, a copy of
FOSS source code is available on our FOSS website.
For patent information, please visit www.welchallyn.com/patents.
For information about any Welch Allyn product, contact your local Welch Allyn representative:
www.welchallyn.com/about/company/locations.htm.
DIR 80022218 Ver. A
Revision date: 2017-07
Welch Allyn, Inc.
4341 State Street Road
Skaneateles Falls, NY 13153 USA
www.welchallyn.com
Regulatory Affairs Representative
Welch Allyn Limited
Navan Business Park
Dublin Road
Navan, County Meath
Republic of Ireland

Contents
Symbols ................................................................................................... 1
Safety ....................................................................................................... 5
Warnings and cautions ......................................................................................... 5
General safety considerations .............................................................................. 6
Electrostatic discharge (ESD) ............................................................................... 6
Overview .................................................................................................. 9
Purpose and scope .............................................................................................. 9
Technical support services ................................................................................. 10
Recommended service intervals ........................................................................ 14
The Welch Allyn Service Tool ............................................................................ 15
Battery performance .......................................................................................... 16
Controls, indicators, and connectors ................................................... 19
Service menu ......................................................................................... 23
Access the Service screens ............................................................................... 23
General tab ......................................................................................................... 23
Self-tests tab ...................................................................................................... 26
Logs tab ............................................................................................................. 26
Device tab .......................................................................................................... 27
Licensing tab ...................................................................................................... 27
Power-up sequence ............................................................................... 29
Troubleshooting .................................................................................... 31
Symptoms and solutions ................................................................................... 31
Technical alarm messages ................................................................................. 44
Disassembly and repair ........................................................................ 57
Required tools and equipment ........................................................................... 58
Power down the device ..................................................................................... 58
Module replacement — bottom housing ........................................................... 60
Module replacement — main housing ............................................................... 61
Remove the system from the wall and remove the battery .............................. 63
Remove the handle module assembly ............................................................... 64
Remove the handles .......................................................................................... 65
Remove the 767 controller PCBA ...................................................................... 66
Remove the handle cradle and optical assemblies ............................................ 66
Open the chassis ............................................................................................... 68
Remove the power supply ................................................................................. 69
iii

Remove the ground lug, AC power harness assembly, and IEC connector ...... 70
Remove the communications board .................................................................. 71
Remove the radio board and antenna ................................................................ 72
Remove the light bar .......................................................................................... 73
Remove the fan ................................................................................................. 74
Remove the power panel ................................................................................... 75
Remove the speaker .......................................................................................... 76
Remove the battery board ................................................................................. 77
Remove the power wire harness and main wire harness ................................. 77
Remove the main board ..................................................................................... 78
Remove the LCD ............................................................................................... 81
Remove the module well ................................................................................... 83
Remove the front housing ................................................................................. 84
Replace the power button ................................................................................. 86
Remove the chassis ........................................................................................... 86
Functional verification and calibration ................................................ 87
Functional verification tests ............................................................................... 87
Basic functional verification checks ................................................................... 90
Electrical safety testing ....................................................................... 101
Ground stud connector .................................................................................... 101
Options, upgrades, and licenses ........................................................ 103
Available options, upgrades, and licenses ....................................................... 104
Install options ................................................................................................... 105
Host firmware requirements ............................................................................ 105
Masimo parameter upgrades ........................................................................... 106
Configure options ............................................................................................. 106
Field replaceable units ........................................................................ 107
Front housing ................................................................................................... 107
Chassis ............................................................................................................. 110
Handles ............................................................................................................ 112
Modules ........................................................................................................... 114
Miscellaneous parts ......................................................................................... 115
Licenses ........................................................................................................... 116
Partners in Care service and support agreements ........................................... 116
Service and repair training ................................................................................ 117
Appendices .......................................................................................... 119
Decontamination and cleaning requirements .................................................. 119
Configuration options ....................................................................................... 120
Factory defaults ............................................................................................... 122
Disassembly and repair reference ................................................................... 131
Connex Integrated Wall System interconnect diagram ................................... 139
Service record .................................................................................................. 140
iv Contents Welch Allyn Connex®Integrated Wall System

Symbols
For information on the origin of these symbols, see the Welch Allyn symbols glossary:
www.welchallyn.com/symbolsglossary.
Documentation symbols
WARNING The warning statements in this manual identify conditions or practices that could
lead to illness, injury, or death.
CAUTION The caution statements in this manual identify conditions or practices that could
result in damage to the equipment or other property, or loss of data. This definition applies to
both yellow and black and white symbols.
WARNING Hot surface. Do not touch.
Follow the operating instructions/directions for use (DFU) — mandatory action.
A copy of the DFU is available on this website.
A printed copy of the DFU can be ordered from Welch Allyn for delivery within 7 days.
Power symbols
Power on/Display power-saving
[recent models]
Equipotential terminal
Power on/Display power-saving
[older models]
(on the display) Device is plugged
into Alternating Current power
Battery absent or faulty
1

(on the device, green indicator)
Alternating Current power present,
battery fully charged
Battery charge level
(on the device, amber indicator)
Alternating Current power present,
battery is charging
Battery cover
Alternating Current (AC) Rechargeable battery
Li-ion battery AC input power
Connectivity symbols
USB Ethernet RJ-45
Wireless signal strength
• Best (4 bars)
• Good (3 bars)
• Fair (2 bars)
• Weak (1 bar)
• No signal (no bars)
• No connection (blank)
Nurse call
[recent models]
Nurse call
[older models]
Connected to central station Disconnected from central station
Miscellaneous symbols
Manufacturer Limited rotation/Turn completely to
right
Reorder number Serial number
Do not reuse China RoHS markings for control of
pollution caused by electronic
information products. XX indicates
Environmentally Friendly Use
Period in years.
2Symbols Welch Allyn Connex®Integrated Wall System

Nonionizing electromagnetic
radiation
Recycle the product separate from
other disposables
Restrictions for use of wireless
device in Europe. European
Community's Class 2 radio
equipment.
Call for maintenance
Defibrillation-proof Type BF applied
parts
Do not expose to open flame
Atmospheric pressure limitation Not for injection
Transport and storage temperature
range
Authorized Representative of the
European Community
Maximum safe working load limits
(specific values presented with
symbol)
Mass in kilograms (kg)
Recycle IPX1
(Vital Signs
Monitor)
IPX0
(Integrated Wall
System)
Degree of protection provided by
the enclosure with respect to
harmful ingress of liquids
Service manual Symbols 3

4Symbols Welch Allyn Connex®Integrated Wall System

Safety
All users of the system must read and understand all safety information presented in this
manual before using or repairing the system.
United States federal law restricts this device to sale, distribution, or use by or on the
order of a licensed medical practitioner.
Warnings and cautions
WARNING Safety risk. Make frequent electrical and visual checks on
cables, sensors, and electrode wires. All cables, sensors, and electrode
wires must be inspected and properly maintained and in proper working
order to allow the equipment to function properly and to protect patients.
WARNING Safety risk. Place the system and accessories in locations
where they cannot harm the patient should they fall from a shelf or mount.
WARNING Fire and explosion hazard. Do not operate the system in the
presence of a flammable anesthetic mixture with air, oxygen, or nitrous
oxide; in oxygen-enriched environments; or in any other potentially
explosive environment.
WARNING Inaccurate measurement risk. Dust and particle ingress can
affect the accuracy of blood pressure measurements. Use the system in
clean environments to ensure measurement accuracy. If you notice dust or
lint build-up on the system’s vent openings, have the system inspected and
cleaned by a qualified service technician.
CAUTION Before disassembling the device or installing options,
disconnect the patient from the system, power down the device, and
disconnect the AC power and any attached accessories (for example, SpO2
sensors, blood pressure hoses and cuffs, and temperature probes) from
the device.
CAUTION To ensure that the system meets its performance
specifications, store and use the system in an environment that maintains
the specified temperature and humidity ranges.
CAUTION The system may not function properly if dropped or damaged.
Protect it from severe impact and shock. Do not use the system if you
notice any signs of damage.
5

CAUTION Do not connect more than one patient to a system or connect
more than one system to a patient.
CAUTION Do not operate the system in the presence of magnetic
resonance imaging (MRI) or hyperbaric chambers.
CAUTION Do not autoclave the system. Autoclave accessories only if the
manufacturer’s instructions clearly approve it.
General safety considerations
• If the system detects an unrecoverable problem, it displays an error message. For
more information see “Troubleshooting.”
• To ensure patient safety, use only accessories recommended or supplied by Welch
Allyn. (See the accessories list in the Welch Allyn Connex Integrated Wall System
Directions for use on the user documentation CD or http://www.welchallyn.com.
Always use accessories according to your facility’s standards and according to the
manufacturer’s recommendations and instructions. Always follow the
manufacturer’s directions for use.
• Welch Allyn recommends that only Welch Allyn service personnel or an authorized
repair center perform warranty service. Performing unauthorized service on a device
that is within warranty may void the warranty.
Electrostatic discharge (ESD)
CAUTION Electrostatic discharge (ESD) can damage or destroy electronic
components. Handle static-sensitive components only at static-safe
workstation.
CAUTION Assume that all electrical and electronic components of the
system are static-sensitive.
Electrostatic discharge is a sudden current flowing from a charged object to another
object or to ground. Electrostatic charges can accumulate 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.
6Safety Welch Allyn Connex®Integrated Wall System

• 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 system
power turned off.
• Insert and seal static-sensitive components and assemblies into their original static-
shielding 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.
Service manual Safety 7

8Safety Welch Allyn Connex®Integrated Wall System

Overview
Purpose and scope
This manual is a reference for periodic preventive maintenance and corrective service
procedures for the Welch Allyn Connex Integrated Wall System, firmware version 2.3X.
It is intended for use only by trained and qualified service personnel.
Corrective service is supported to the level of field-replaceable units. These include
circuit-board assemblies and some subassemblies, case parts, and other parts.
CAUTION No component-level repair of circuit boards and subassemblies
is supported. Use only the repair procedures described in this manual.
WARNING When performing a service procedure, follow the instructions
exactly as presented in this manual. Failure to do so could damage the
device, invalidate the product warranty, and cause serious personal injury.
Find instructions for functional testing and performance verification in the Welch Allyn
Service Tool help files.
This manual applies only to this device. For servicing of any other device, see the service
manual for the specific device.
Service work not described in this manual must be performed by qualified service
personnel at the factory or at an authorized Welch Allyn service center.
Related documents
When using this manual, refer to the following:
•Welch Allyn Connex® Devices Directions for use, Software version 2.3X
(on the user documentation CD)
• Welch Allyn Service Tool
http://www.welchallyn.com/en/service-support/service-center/service-tool.html
•Welch Allyn Service Tool Installation and configuration guide
http://www.welchallyn.com/en/service-support/service-center/service-tool.html
•Welch Allyn Braun ThermoScan® PRO 6000 Ear Thermometer, Service manual
(80020325) click here to download the PDF
•Welch Allyn 9600 Plus Calibration Tester Directions for use
•Welch Allyn Radio Configuration guide click here to download the PDF
• Welch Allyn website: www.welchallyn.com
9

Technical support services
Welch Allyn offers the following technical support services:
• Telephone support
• Loaner equipment
• Service agreements
• Service training
• Replacement service parts
• Product service
For information on any of these services, go to www.welchallyn.com.
Service loaners
For warranty or non-warranty repairs not covered under a support agreement, loaners are
available for a nominal charge, subject to availability. Payment is required prior to
shipment for all loaners not covered under a support agreement.
Welch Allyn Service Centers that provide repair service for this product can, on request,
loan a device for use while the device is being repaired. Loaned devices are provided
free of charge for products repaired while under a support agreement that includes a
free loaner provision.
Loaner equipment for the individual component modules is not available.
Service options
Partners in Care service agreements
While product warranties provide basic assurance of Welch Allyn hardware quality, they
may not include the full range of services and support you need. Welch Allyn offers
premium service and support through our Partners in Care program. Whether you
service your own devices and require a minimum of support or rely on us to service your
device, Welch Allyn provides a program that will meet your needs. For more information
visit our web site at www.welchallyn.com or call your sales representative.
Warranty service
All repairs on products under warranty must be performed or approved by Welch Allyn.
Refer all warranty service to Welch Allyn Product Service or another authorized Welch
Allyn Service Center. Obtain a Return Material Authorization (RMA) number for all returns
to Welch Allyn Product Service.
CAUTION Unauthorized repairs will void the product warranty.
Non-warranty service
Welch Allyn product service and authorized service centers support non-warranty repairs.
Contact any Welch Allyn regional service center for pricing and service options.
10 Overview Welch Allyn Connex®Integrated Wall System

Welch Allyn offers modular repair parts for sale to support non-warranty service. This
service must be performed only by qualified end-user biomedical/clinical engineers using
this service manual.
Service training is available from Welch Allyn for biomedical/clinical engineers. Follow
this link for more information.
Partners in Care service and support agreements
Material no. Item Material no. Item
S1-CIWS Connex Integrated Wall System,
Comprehensive partnership program
1 year
S1-CIWS-2 Connex Integrated Wall System,
Comprehensive, Comprehensive
partnership program 2 years
S2-CIWS Connex Integrated Wall System,
Bio-med partnership program 1 year
S2-CIWS-2 Connex Integrated Wall System,
Bio-med partnership program 2
years
S4-CIWS
(International only)
Connex Integrated Wall System,
extended warranty, 1 year
S4-CIWS-2
(International only)
Connex Integrated Wall System,
extended warranty, 2 years
Repairs
A Welch Allyn Service Center must perform all repairs on products under warranty,
unless you have purchased a Welch Allyn Partners in Care Biomed agreement allowing
you to service the device while under warranty.
CAUTION Unauthorized repairs will void the product warranty.
Qualified service personnel or a Welch Allyn Service Center should repair products out of
warranty.
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.
Welch Allyn Technical Support
If you have a problem with the device that you cannot resolve, call the Welch Allyn
Technical Support Center nearest you for assistance. A representative will assist you in
troubleshooting the problem and will make every effort to solve the problem over the
phone, potentially avoiding an unnecessary return.
To expedite response to your issue, be prepared to provide details on how (steps
executed) and when (time and date) the problem occurred. Also, log and configuration
files captured on the device can assist with diagnosis and troubleshooting. You can
easily save these files from the device to a flash drive using controls on the Service tab.
See the "Service menu" section of this manual for details.
If your product requires warranty, extended warranty, or non-warranty repair service, a
Welch Allyn Technical Support representative will record all necessary information to
issue an RMA number. The support representative will provide you with the address of
the Welch Allyn Service Center to send your device to.
Technical support is available during local business hours.
Service manual Overview 11

Returning products
When returning a product to Welch Allyn for service, ensure that you have the following
information:
• Product name, model number, and serial number. This information may be found on
the product and serial number labels on the bottom of the device.
• A complete return shipping address.
• A contact name and phone number.
• Any special shipping instructions.
• A purchase order number or credit card number if the product is not covered by a
warranty.
• A Partners in Care contract number if product is covered under a service agreement.
• A full description of the problem or service request.
Unless noted in the RMA, the device will be updated to the current software version. If
you prefer that the device not be updated, please state "Do not update software" in the
service request.
Note When requesting an upgrade, check the "Options, upgrades, and licenses"
section to determine if a software upgrade is required.
1. Obtain an RMA number:
• Visit us on the web at www.welchallyn.com/customer-self-service.htm, or
• Contact Welch Allyn to make a request.
Note Welch Allyn does not accept returned products without an
RMA.
2. Ship the device to Welch Allyn, observing these rules:
a. Remove from the package the battery, all hoses, connectors, cables, sensors,
power cords, and other ancillary products and equipment, except those items
that might be associated with the problem.
b. Follow shipping and handling requirements regarding Lithium-ion batteries to
comply with new IATA regulations.
Requirements for returning Lithium-ion batteries
• Remove the Lithium-ion battery from the device. You cannot ship these
devices with batteries installed.
• Follow packaging requirements (presented next in this section)
• Do not ship any battery that has been physically damaged or shows signs of
leakage.
12 Overview Welch Allyn Connex®Integrated Wall System

• Do not ship any battery that has been recalled by the supplier or
manufacturer.
• Do not ship any waste batteries that should be recycled or discarded.
• Do not ship multiple batteries together.
• Use ground transportation only to ship Lithium-ion batteries.
Packaging requirements for Lithium-ion batteries and associated devices
• Use packaging provided by Welch Allyn or the battery manufacturer to pack
the battery. Seal the battery in the anti-static bag and place it in the shipping
box. Return shipments without approved packing materials will not be
accepted.
Note If the original shipping carton or replacement battery
shipping box is unavailable, consult the manufacturer
website for information regarding shipping Lithium-
ion batteries: http://www.iata.org/lithiumbatteries
• If returning both the battery and the device, pack the battery and the device
separately.
• If returning multiple batteries, pack and ship each battery individually. Do not
consolidate multiple batteries in a single package.
c. Clean the device.
Note To ensure safe receipt of your device by the service
center and to expedite processing and return of the
device to you, thoroughly clean all residues from the
device before you ship it to Welch Allyn. For
decontamination and cleaning requirements, see the
appendices.
If a returned device is found to be contaminated with
bodily fluids, it will be returned at the owner’s expense.
United States federal regulations prohibit the processing
of any device contaminated with blood-borne pathogens.
Welch Allyn thoroughly cleans all returned devices on
receipt, but any device that cannot be adequately
cleaned cannot be repaired.
d. Pack the device. Put the device, enclosed in a plastic bag with a packing list,
into the original shipping carton with the original packing materials or into
another appropriate shipping carton, and seal appropriately for shipping.
Remember that the device and any batteries must be packed and shipped
separately.
e. Write the Welch Allyn RMA number with the Welch Allyn address on the outside
of the shipping carton.
WARNING Safety risk. Do not ship any battery that has
been physically damaged or shows signs of leakage
unless you receive specific instructions which meet the
requirements for the shipment of Lithium batteries.
Dispose of damaged or leaking batteries in an
environmentally safe manner consistent with local
regulations.
Service manual Overview 13

WARNING Safety risk. Do not pack a defective battery
in checked or carry-on baggage if traveling by air.
Note In the United States, the applicable regulations can be
found in the Code of Federal Regulations (CFR). Refer to
49 CFR 173.185 for shipping lithium batteries by air or
ground. Use 49 CFR 172.102 sections 29, 188, 189, A54,
A55, A100, A101, A103, and A104 to find the special
provisions for shipping lithium batteries.
Recommended service intervals
To confirm that the device is functioning within the design specifications, perform
periodic service as indicated in the following table. Customers who have the Standard
unlicensed edition of the Welch Allyn Service Tool can perform the basic functional
verification and calibration procedures referenced in the table by following the
instructions in this manual. If you have the Gold licensed edition of the service tool, use
the tool to perform a complete functional verification and calibration of the device in lieu
of performing the basic tests.
Component Service interval Service procedure
NIBP module Annually Basic functional verification
SpO2 module Annually Basic functional verification
SpHb parameter Annually Basic functional verification
RRa parameter N/A N/A
SureTemp Plus Annually Basic functional verification
Braun ThermoScan PRO 6000 Annually Basic functional verification
Braun ThermoScan PRO 4000 Annually Basic functional verification
Battery 300 charge cycles Replace the battery
Use the service tool, Gold licensed edition, to perform a complete functional verification
and calibration of the device whenever any of the following conditions exist:
•Based on the basic functional verification, the device does not meet specifications
• The device has been dropped or otherwise damaged
• The device is malfunctioning
• The case has been opened
• An internal part has been replaced (battery excluded)
Note For instructions on using the Gold licensed edition, see the service tool
help files.
14 Overview Welch Allyn Connex®Integrated Wall System

Maintenance
For device maintenance information, see “Maintenance and service” in the wall
system's directions for use. Covered topics include the following:
• Inspecting and cleaning the system and accessories
• Changing the battery
The Welch Allyn Service Tool
The Welch Allyn Service Tool is available in the following editions:
•Standard unlicensed: Download from http://www.welchallyn.com/service tool.
•Gold licensed: Required to perform complete functional verification and calibration.
This edition requires an additional license. For more information about acquiring this
license, contact Welch Allyn.
Note To qualify for the Gold license, you must attend the
Welch Allyn technical training course or complete online
training for the device.
Clinicians and technical service personnel can use the service tool to manage and
maintain supported Welch Allyn products. You can use the service tool to do the
following:
•Review device information. When connected to the device, the service tool lists
installed modules, installed firmware and hardware versions, warranty and repair
information, status, and usage history.
•Receive notifications when periodic maintenance is needed. The service tool can
help you manage and maintain your entire inventory of supported Welch Allyn
products. Through the remote service function, the service tool can connect to
Welch Allyn Customer Service. With this functionality you can automatically receive
firmware updates and feature upgrades for your supported products, including
software upgrades for the service tool.
•Install updates and upgrades. The service tool can read the firmware version for
each module and check for available updates or upgrades.
•Create a work list. The work list provides information about service actions—
referred to as work orders—that are waiting for you to perform on your maintained
devices. Work orders may include periodic calibrations, upgrades, or license
installations.
•Schedule periodic maintenance. You can use the service tool to set the service
interval for each maintained device.
•View and save logs. You can download and save log files from the device for
analysis to help diagnose and identify reported issues.
•Create user accounts. Administrators can create user accounts and set permission
levels to control access to the features, allowing one group to perform administrative
tasks and another to perform service tasks. Restricting access prevents the service
tool from being used to make unauthorized changes on a connected device.
•Perform functional verification and calibration. The service tool can check any
device requiring calibration and, if necessary, calibrate the device to match the
design specifications. This feature is not supported for all products and requires the
service tool, Gold licensed edition, for each supported product.
Service manual Overview 15

•Recover devices. In the rare case where a device can no longer boot because of
corrupted firmware, the service tool can connect the device to Welch Allyn Technical
Support to reinstall the firmware.
•Extensible. The service tool software accepts new plug-ins to support future Welch
Allyn products.
Some of these features are enabled for any user (Standard unlicensed edition). Others
require special user account privileges or a Welch Allyn service contract (Gold licensed
edition). If you require gold-level support for a Welch Allyn product, please contact
Welch Allyn technical support.
Battery performance
About the battery
Note The battery in the wall system provides backup power during a power
outage, not power for normal use. Except during cleaning and maintenance
activities, the wall system should remain connected to AC power at all
times.
The device uses a rechargeable Lithium-ion smart battery. Internal circuitry enables the
battery to report its condition to the device. The device displays the battery status via the
LED power indicator, icons on the screen, and status messages appearing in the Device
Status area of the display. Battery information may be collected using the service tool.
New batteries are shipped from the manufacturer with a 30 percent charge to extend
shelf life. When installing a new battery in the device, you must plug the device into AC
power to wake up the battery. If the AC power is not applied to the device, the new
battery will appear discharged.
The Device Status area displays a low-battery status message when 30 minutes of
power remain and again when 5 minutes remain.
Battery charging is provided by the device’s internal power supply.
For a complete list of battery specifications, see the device’s directions for use.
Best practices
The following practices help to extend the life of the battery and the device.
WARNING Safety risk. When handling and storing Lithium batteries: Avoid
mechanical or electrical abuse. Batteries may explode or cause burns, if
disassembled, crushed or exposed to fire or high temperatures. Do not
short or install with incorrect polarity.
• Whenever possible, keep the monitor plugged in to charge the battery.
• Remove the battery when storing the device for an extended amount of time.
• Replace batteries that trigger a low battery status message when fully charged.
• Do not use damaged or leaking batteries.
• Store batteries with a 30 to 50 percent charge.
• Store batteries within the temperature range indicated for each period:
16 Overview Welch Allyn Connex®Integrated Wall System