Medtronic Physio-Control Lifepak 20e, Lifepak 20 Service Manual

LIFEPAK

®

20

LIFEPAK 20e

Defibrillator/Monitor with

1

Service Manual

ADAPTIV™ Biphasic Technology

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LIFEPAK 20/20e Defibrillator/Monitor Table of Contents

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Preface Safety Device

Description

Performance
Inspection
Procedure

Battery
Maintenance

Instrument
Calibration

Replacement
Procedures

Troubleshooting Preventive

Index

Modes of
Operation

Maintenance

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LIFEPAK 20/20e Defibrillator/Monitor Section Contents

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Preface

This service manual describes how to maintain, test, troubleshoot, and repair the
LIFEPAK 20 defibrillator/monitor or LIFEPAK 20e defibrillator/monitor (device).

Note: Except where specified, the information in this manual pertains to both

the LIFEPAK 20 and 20e defibrillator/monitor.

Separate publications, the LIFEPAK 20 Defibrillator/Monitor Operating

Instructions (MIN 3200750) and LIFEPAK 20e Defibrillator/Monitor Operating
Instructions (MIN 3205878), are used by physicians, clinicians, and emergency

care providers. The operating instructions provide step-by-step instructions, as
well as operator-level testing and maintenance.

Note: Hyperlinks appear in blue text. Text that indicates the name of a button,

menu, menu item, screen message, or screen overlay appears in all
caps, for example,

This section covers the following topics:

ANALYZE button and SETUP menu.

Trademarks

Using Adobe Reader

Navigating Through the Manual

Viewing the PIP Checklist

Service Personnel Qualifications

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LIFEPAK 20/20e Defibrillator/Monitor Section Contents

Preface (continued) Contacting Medtronic

Responsibility for Information

Device Tracking

Service Information

Warranty Information

Configuration Information

Glossary

Acronyms

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LIFEPAK 20/20e Defibrillator/Monitor Preface

Trademarks

1-5

LIFEPAK, FAST-PATCH, and QUIK-COMBO are registered trademarks of
Medtronic Emergency Response Systems, Inc.
CODE SUMMARY, REDI-PAK, PARTSLINE, Shock Advisory System, and
ADAPTIV are trademarks of Medtronic Emergency Response Systems, Inc.
Medtronic is a registered trademark of Medtronic, Inc.
Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated.
Tektronix is a registered trademark of Tektronix Incorporated.
QED 6 is a trademark and Fluke is a registered trademark of Fluke Biomedical
Corporation.
Masimo, SET, and LNOP are registered trademarks of Masimo Corporation.

© 2002-2007 Medtronic Emergency Response Systems, Inc. All rights reserved.

MIN 3202007-001 / CAT. 26500-002703

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Accessing Adobe
Reader Help

Using Bookmarks

Using Page View

1-6

This service manual opens in Adobe® Reader, which is included on this
documentation CD. For additional assistance using the Adobe Reader program,
access

Bookmarks appear in a column on the left side of the screen. They enable you to
easily navigate to main sections of the manual, similar to a table of contents.

To view or hide the bookmarks column, click the
far left of the screen.

To jump to a bookmark topic, click the desired topic.

Note: A plus sign to the left of a bookmark topic indicates additional topics exist

Click the PAGES tab located to the far left of the screen to view miniature images
of each page in the document. Scroll through the pages and click an image to
jump quickly to that page.

ADOBE READER HELP in the HELP menu.

BOOKMARKS tab located to the

under that bookmark level. Click the plus sign to expand or collapse the
bookmarks.

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Navigating Through the Manual

Blue text indicates a hyperlink. Click a link to jump to that topic. Click
in the navigation bar at the bottom of each page to return to your previous
location. The pointer changes to a pointing finger when positioned over a link.

A navigation bar at the bottom of each page also provides helpful links. The
navigation bar includes:

■ Click to jump to the main table of contents for the

manual.

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you are currently viewing.

Index

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page in the reverse order visited.

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1-7

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Some pages include an additional navigation bar above the main bar that
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LIFEPAK 20/20e Defibrillator/Monitor Preface

Viewing the PIP Checklist

The LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection

Procedure Checklist is also included on this CD-ROM:

You can view this document by opening the file in Adobe Reader or by clicking
the appropriate links provided in this service manual.

1-8

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LIFEPAK 20/20e Defibrillator/Monitor Preface

Service Personnel Qualifications

Service technicians must be properly qualified and thoroughly familiar with the
operation of the device. They must meet at least one of the following
requirements (or the equivalent):

■ Associate of Applied Science, with an emphasis in biomedical electronics

■ Certificate of Technical Training, with an emphasis in biomedical electronics

■ Equivalent biomedical electronics experience

1-9

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LIFEPAK 20/20e Defibrillator/Monitor Preface

Contacting Medtronic

1-10

Medtronic Emergency Response Systems

11811 Willows Road Northeast
Redmond, WA 98052-2003 USA
Telephone: [phone]
Toll Free (USA only): 1.800.442.1142
Fax: [phone]

Internet: www.medtronic-ers.com

www.medtronic.com

Medtronic Europe S.A.

Medtronic Emergency Response Systems
Rte du Molliau 31
Case postale 84
1131 Tolochenaz
Switzerland
Telephone: [phone]
Fax: [phone]

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LIFEPAK 20/20e Defibrillator/Monitor Preface

Responsibility for Information

This service manual describes the methods required to maintain, test, and repair
the device. It does not address the operation of the device. Qualified service

personnel must consult the appropriate operating instructions and this service

manual to obtain a complete understanding of the use and maintenance of the
device.

It is the responsibility of our customers to ensure that the appropriate person(s)
within their organization has access to the information in this service manual,
including any warnings and cautions used throughout the manual.

1-11

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LIFEPAK 20/20e Defibrillator/Monitor Preface

Device Tracking

1-12

!USA

The U.S. Food and Drug Administration requires defibrillator manufacturers and
distributors to track the location of their devices. If your device has been sold,
donated, lost, stolen, exported, or destroyed, or if it was not obtained directly
from Medtronic, please notify the device-tracking coordinator at 1.800.426.4448.
Refer to your operating instructions for more information concerning device
tracking.

Device Tracking:

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LIFEPAK 20/20e Defibrillator/Monitor Preface

Service Information

1-13

Before attempting to clean or repair any assembly in the device, the service
technician should be familiar with the information provided in the Preventive

Maintenance section of this manual.

A qualified service technician should inspect any device that has been
dropped, damaged, or abused to verify that the device is operating within
performance standards listed in the Performance Inspection Procedure (PIP),
and that the leakage current values are acceptable.

Replacement procedures for the device are limited to those items accessible at

the subassembly level. Replacements and adjustments must be made by
qualified service personnel. Replacements at the subassembly level simplify
repair and servicing procedures and help ensure correct device operation and
calibration.

To obtain Medtronic service and maintenance for your device, contact your local
service or sales representative. In the USA, call Medtronic Emergency Technical
Service at 1.800.442.1142. Outside the USA, contact your local Medtronic
representative.

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LIFEPAK 20/20e Defibrillator/Monitor Preface

Warranty Information

Masimo® Use
Agreement

1-14

Refer to the warranty statement included in the Maintaining the Equipment
section in the operating instructions.

No Implied License — Possession or purchase of this device does not convey
any express or implied license to use the device with replacement parts that
would, alone, or in combination with this device, fall within the scope of one or
more of the patents relating to this device.

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LIFEPAK 20/20e Defibrillator/Monitor Preface

Configuration Information

This service manual covers existing devices and options through the following
revisions:

■ LIFEPAK 20/20e defibrillator/monitor basic device with ECG

■ Pacing option

■ SpO2 option

1-15

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Glossary

1-16

The following are definitions of terms used throughout this service manual.

■ ADAPTIV™ biphasic technology — Property of the shock waveform

generated by the device. The biphasic waveform is characterized by a
positive current phase, followed by a reverse current phase of shorter
duration and decreased magnitude. The waveform pulse characteristic is
biphasic truncated exponential (BTE).

■ Automated external defibrillator (AED) — The device uses an ECG analysis

Shock Advisory System™ (SAS) to advise the device operator if it detects a
shockable or nonshockable rhythm. For more information about CPSS and
SAS, refer to the Shock Advisory System section in the operating
instructions.

■ CODE SUMMARY™ report — A summary report that consists of a

preamble, an event/vital signs log, and waveforms associated with certain
events. Refer to the Data Management section in the operating instructions
for a sample CODE SUMMARY report.

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Glossary (continued)

1-17

■ Continuous patient surveillance system (CPSS) — A feature that monitors

the patient ECG in
CPSS is active when the
selected after pressing the

LEADS or PADDLES for a potentially shockable rhythm.

AED MODE indicator is on or the VF/VT ALARM is

ALARMS button (manual mode). The CPSS

operates in conjunction with the Shock Advisory System (SAS). For more
information about CPSS and SAS, refer to the Shock Advisory System
section in the operating instructions.

■ FAST-PATCH

®

disposable defibrillation/ECG electrodes — An electrode

system that allows delivery of defibrillation therapy to the patient.

■ QUIK-COMBO

®

pacing/defibrillation/ECG electrodes — An electrode system

that allows delivery of pacing and defibrillation therapy to the patient.

■ QUIK-COMBO patient simulator — A combination lead tester/patient cardiac

rhythm simulator. The simulator is designed for use in training clinical
personnel in the operation of the device.

■ REDI-PAK™ preconnect system — A variant of the QUIK-COMBO pacing/

defibrillation/ECG electrodes system. The system allows QUIK-COMBO
pacing/defibrillation/ECG electrode cable connection without removing the
electrodes from their air-tight sealed pouch until needed.

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Glossary (continued)

1-18

■ Shock Advisory System (SAS) — A computerized ECG analysis system

used to detect a shockable rhythm. For more information about CPSS and
SAS, refer to the Shock Advisory System section in the operating
instructions.

■ SpO2 — A noninvasive pulse oximeter that checks the saturation of oxygen

in arterial blood.

■ Test plug — An accessory used to connect the test load to the patient

connector on the device.

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Acronyms

1-19

The following is a list of acronyms and abbreviations used in this manual.

Term Description

AAMI Association for the Advancement of Medical Instrumentation
ADC Analog-to-digital conversion
AED Automated external defibrillator
Ah Ampere hour
AHA American Heart Association
ANSI American National Standards Institute
BTE Biphasic truncated exponential
BF Electrically isolated, external body connection
BPM Beats per minute
CF Electrically isolated, direct cardiac connection
CPR Cardiopulmonary resuscitation
CPU Central processing unit
CPSS Continuous patient surveillance system
DUART Dual universal asynchronous receiver/transmitter
DMM Digital multimeter

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Acronyms (continued)

1-20

.Acronyms

Term Description

ECG Electrocardiogram
EMS Emergency medical service
ESD Electrostatic discharge
ESU Electrosurgical unit
HR Heart rate
IEC International Electrical Commission
LCD Liquid crystal display
LED Light-emitting diode
NHAAP National Heart Attack Alert Program
NSR Normal sinus rhythm
OEM Original equipment manufacturer
RR Respiration rate
PC Personal computer
DSP Digital signal processor
PCB Printed circuit board
PIP Performance inspection procedure
PPM Pulses per minute

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Acronyms (continued)

1-21

Term Description

RISC Reduced instruction set computer

RTC/NVRAM Real-time clock/non-volatile random-access memory

SAS Shock Advisory System

SSD Static-sensitive device

TCP Test and calibration procedure

VF Ventricular fibrillation

VT Ventricular tachycardia

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LIFEPAK 20/20e Defibrillator/Monitor Section Contents

22

Safety

This section describes the general safety conventions, terms, and symbols used
in this service manual or on the device. This information is intended to alert
service personnel to recommended precautions in the care, use, and handling of
this medical device.

Terms

General Warnings and Cautions

Symbols

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LIFEPAK 20/20e Defibrillator/Monitor Safety

Terms

2-2

The following terms are used in this service manual or on the various
configurations of the device. Familiarize yourself with their definitions and
significance.

Danger: Immediate hazards that will result in serious personal injury or death.

Warning: Hazards or unsafe practices that could result in serious personal

injury or death.

Caution: Hazards or unsafe practices that could result in device or property

damage.

Note: Points of particular interest for more efficient or convenient device

operation; additional information or explanation concerning the
subject under discussion.

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LIFEPAK 20/20e Defibrillator/Monitor Safety

General Warnings and Cautions

The following are general warnings and cautions. Keep these warnings and
cautions in mind when working with the device. More specific warnings and
cautions appear throughout this service manual and the operating instructions.

WARNINGS!

Possible fire or explosion. Do not service this device in the presence of

flammable gases, anesthetics, or oxygen sources.

Shock or fire hazard. Do not immerse any portion of this device in water or

other fluids. Avoid spilling any fluids on the device or accessories. If the
device is ever immersed in water or other fluids, remove the batteries and
disconnect ac power until the device can be serviced.

Patient hazard. Do not mount the device directly above the patient. Place

the device in a location where it cannot harm the patient should it fall from
its shelf or other mount.

2-3

Shock or fire hazard. Equipment or accessories improperly interconnected

to each other can be a source of ignition or cause a shock. Make sure that
all equipment is interconnected safely.

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LIFEPAK 20/20e Defibrillator/Monitor Safety

General Warnings and Cautions (continued)

WARNING!

Shock hazard. Servicing of this device must be performed by properly

trained individuals. This device may retain potentially lethal charges
accessible inside the device at any time – even when off. Follow
procedures carefully for discharging the A13 Energy Storage Capacitor.

CAUTION!

Possible equipment damage. This device may be damaged by mechanical

or physical abuse such as immersion in water or dropping. If the device
has been abused, remove it from use and contact qualified service
personnel.

2-4

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LIFEPAK 20/20e Defibrillator/Monitor Safety

Symbols

2-5

The following list includes symbols that may be used in this service manual or on
various configurations of the device and accessories. Some symbols may not be
relevant to your device or used in every country.

[signal] Input

[signal] Output

AC voltage

Alarm off

Alarm on

Attention, consult accompanying documents

Biphasic defibrillator shock

Canadian Standards Association certification for Canada
and the United States

CAT.

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Catalog number used for placing orders

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LIFEPAK 20/20e Defibrillator/Monitor Safety

Symbols (continued)

YYYY

2-6

Date of manufacture

DC voltage

Defibrillation protected, type BF patient connection

Defibrillation-proof type CF terminal

Do not dispose of this product in the unsorted municipal
waste stream. Dispose of this product according to local
regulations. See http://recycling.medtronic.com for
instructions on the proper disposal of this product.

Equipotential connector

Event marker

!USA

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For USA audiences only

Fragile/breakable, handle with care

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LIFEPAK 20/20e Defibrillator/Monitor Safety

Symbols (continued)

2-7

Fuse

Greater than

Heart rate

HOME SCREEN button

Indoor use only

J

Joules

Less than

Device to device cable

YYWW

LOT

MIN

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Lot number (batch code)

Manufacturer’s item number

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LIFEPAK 20/20e Defibrillator/Monitor Safety

Symbols (continued)

0123

2-8

Mark of conformity according to the European Medical
Device Directive 93/42/EEC

Negative terminal

Off (power: disconnection from the ac mains)

On (power: connection to the ac mains)

Pace arrow, internal pacing

Pace arrow, noninvasive pacing

Positive terminal

Power on/off

Protect from water

R-wave sense marker

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LIFEPAK 20/20e Defibrillator/Monitor Safety

Symbols (continued)

REF

(x)

2-9

Recognized component mark for Canada and the United
States

Recycle this item

Reorder number

Safety ground. Protective earth connection

SHOCK button

Shock count (x) on screen

Single use only

Static-sensitive device (SSD)

Switch off

Switch on

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LIFEPAK 20/20e Defibrillator/Monitor Safety

Symbols (continued)

2-10

Sync in/ECG out

System connector/data in

This end up

Turn counterclockwise to unlock

Type BF patient connection

Use by date shown: yyyy-mm-dd

VF/VT alarm on

VF/VT alarm silenced

Warning, high voltage

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LIFEPAK 20/20e Defibrillator/Monitor Section Contents

3

Device

This section includes the following topics:

Description

Introduction

Physical Description and Features

Ordering Devices, Supplies, and Accessories

System Context Diagrams

Functional Description

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Introduction

About the Device

Energy Delivery

3-2

The LIFEPAK 20/20e defibrillator/monitor (device) is a complete, acute, cardiac­care response system with both manual and semiautomatic defibrillation
operation. When clinically indicated, the device enables the operator to deliver a
brief, high-energy pulse of electricity to the patient’s heart. Operators can
preconfigure the device to reduce complexity during normal operation.

The device generates a biphasic truncated exponential (BTE) shock pulse for
defibrillation. The standard method of energy delivery is through self-adhesive
QUIK-COMBO pacing/defibrillation/ECG electrodes. When using these
disposable defibrillation electrodes (DDEs), internal circuitry continuously
measures the impedance between the electrodes and allows defibrillation only
when the defibrillation electrodes are attached to the patient. The user can select
from a variety of optional accessories for energy delivery (for example, standard
hard paddles or internal paddles).

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Introduction (continued)

Manual Mode
Operation

AED Mode Operation

3-3

In manual mode (AED MODE indicator off), the device enables the operator to
manually select an energy level, initiate a charge sequence, and apply energy in
either direct or synchronized modes. When the operator selects the
from the
monitors the patient’s ECG for a shockable rhythm. A suspect rhythm alerts the
operator with a priority tone and screen message. The operator can then follow
locally established guidelines for the administration of defibrillation therapy.

In AED mode (AED MODE indicator on), the device uses the CPSS to monitor the
patient’s ECG for a shockable rhythm. A suspect rhythm alerts the operator with
a priority tone and screen message. The operator may continue by pressing the

ANALYZE button, which allows the Shock Advisory System (SAS) to analyze the

ECG rhythm and make recommendations. The operator can then follow locally
established guidelines for the administration of defibrillation therapy. For more
information about CPSS and SAS, refer to Appendix E in the operating
instructions.

ALARMS menu, the continuous patient surveillance system (CPSS)

VF/VT ALARM

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Introduction (continued)

3-4

Device Primary
Functions

The device has four primary functions:

■ Defibrillation

– Manual or semi-automatic (AED) defibrillation
– Synchronized cardioversion in manual mode
– Leads-off detection for therapy and ECG electrodes

■ Noninvasive pacing

– Demand and nondemand modes of operation

■ Capture patient information

– Stores both patient and device data at each event
– Real-time clock provides time stamps for events
– Provides operator review of started events for printout

■ Patient signal monitoring

– Displays up to two waveforms at once
– Displays a continuous pulse oximetry (SpO2) readout
– Displays a continuous heart rate readout
– Displays waveform pace and sense markers
– Monitors for ventricular fibrillation/ventricular tachycardia and sounds a

warning alarm

– Prints continuous ECG data

Service features include calibration and diagnostic functions.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Introduction (continued)

Assemblies

3-5

The device consists of a three-piece case assembly that encloses the following
modules/PCBs:

1. System Control PCB

2. Patient Parameter PCB

3. Power module

and the following OEM and mechanical components:

1. Display

2. Speaker

3. User controls and indicators

4. Printer

5. SpO2 acquisition

4. Therapy PCB

5. User Interface PCB

6. OEM module

6. Patient connector panel

7. System connector panel module

8. Internal ac to dc power supply

9. Internal battery

10. Internal cables

and the following Medtronic attachments:

1. ECG 3- or 5-wire cables

2. QUIK-COMBO cable

3. SpO2 cable

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4. Internal paddles

5. Sterilizable hard paddles

6. Standard hard paddles

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Physical Description and Features

Front Panel

For information about the buttons, indicators and connectors shown below, click
the appropriate right arrow on the items bar at the bottom of the page.

1

2

3

4

5

6

28

29

27 26

3-6

25
24
23

22

21

20
19
18
17

7

8 9 10 11 15 1612 1413

Items 1–6 Items 7–13 Items 14–19 Items 20–29

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

3-7

Physical Description and Features (continued)

Front Panel (continued)

Number Description

1 Display screen — Color liquid crystal display (LCD) screen displays

operating messages, waveforms, status messages, setup menus,
and so forth.

2

3

4

5

6 AC Mains LED —

EVENT control — Press to activate user-defined events.

HOME SCREEN control — Press to return to the home screen of the

particular option or feature you are configuring. Pressing this button
does not take you to a specific screen; instead, it returns to the
home screen for the mode or event you are configuring.

CODE SUMMARY control — Press to print the CODE SUMMARY

critical event record.

PRINT control — Press to start and stop the printer.

When the ac power (line power) is connected,

the AC mains light is steady.

Items 7–13 Items 14–19 Items 20–29

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Physical Description and Features (continued)

Front Panel (continued)

Number Description

7 Service indicator LED — Illuminates when the device enters

service error codes into the Service Log (accessed through the

SERVICE menu). Refer to Troubleshooting for information about

the error codes.

8 ECG cable connector — Connection port for the electrically

isolated ECG patient cable.

9 SpO2 cable connector — Connection port for the pulse oximeter.

10 IrDA port connector — Infrared connection port provides wireless

communications to data management devices (this feature is not
available with this release).

11

SPEED DIAL selector — When active (SPEED DIAL LED is on), turn

(either direction) to make a selection from the menu or overlay
shown on the screen; press to confirm your selection.

3-8

12

13

Items 1–6 Items 14–19 Items 20–29

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SPEED DIAL LED — Illuminates when the SPEED DIAL is active.

ALARMS control — Press to activate and silence alarms.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Physical Description and Features (continued)

Front Panel (continued)

Number Description

14

15 Therapy cable connector — Connection port for the following:

16 Speaker — Provides audio voice prompts and alert tones.

17

OPTIONS control — Press to access the OPTIONS menu.

– QUICK-COMBO electrodes (standard)
– FAST-PATCH electrodes (with optional cable)
– REDI-PAK electrodes (optional)
– Standard adult and pediatric paddles (optional)
– External sterilizable paddles (optional)
– Internal paddles (optional)
– Posterior paddle (optional)

PAUSE control — Press to temporarily slow the pacing rate.

3-9

18

19

Items 1–6 Items 7–13 Items 20–29

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CURRENT control — Press to adjust the pacing current.

RATE control — Press to select a pacing rate.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Physical Description and Features (continued)

Front Panel (continued)

Number Description

20

21

22

23

24

25

26

27

PACER control — Press to activate the pacer function.

SYNC control — Press to activate the synchronized mode.

SHOCK control — Press to discharge the device.

CHARGE control — Press to charge the device.

ENERGY SELECT control — Press to select the energy levels in

manual mode.

ON control — Press to turn the device on and off. Illuminates when

the device is turned on.

SIZE control — Press to change the ECG size.

LEAD control — Press to change the ECG lead.

3-10

28

ANALYZE control — Press to activate the Shock Advisory System

(SAS).

29

AED MODE indicator LED — Illuminates when device is in AED

mode.

Items 1–6 Items 7–13 Items 14–19

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Physical Description and Features (continued)

Side Panel

3-11

Printer — Prints ECG
waveforms, CODE
SUMMARY reports,
and related information

Printer button — Opens
printer door (for paper
installation)

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Physical Description and Features (continued)

Back Panel

Number Description

1 AC power connector — Connection port for

ac (line) power

2 System connector — Connection port for

RS-232 serial interface

3 ECG/Sync connector

4 Grounding stud

3-12

1 432

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Physical Description and Features (continued)

What Is Shipped with a
Basic Device

(3) rolls 50 mm
printer paper

Operating
instructions

LIFEPAK 20 defibrillator/monitor

Operating and Servicing

Video

Warranty Card

LIFEPAK 20 defibrillator/monitor

In-Service
Video (VHS)

Warranty sheet

A basic device includes the components shown below. For additional information
about components, refer to Accessories, Supplies, and Training Tools in the
Maintaining the Equipment section of the operating instructions.

QUIK-COMBO

therapy cable

SpO2 sensor pack

AC power cord

(Not included with

Nellcor option)

3-lead ECG

cable

3-13

QUIK-COMBO

electrodes

(3-pack) ECG

electrodes

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Ordering Devices, Supplies, and Accessories

3-14

The following table (provided for reference) summarizes optional configurations, supplies, and accessories that are
available. For ordering instructions, refer to Ordering Parts.

Item Description MIN CAT.

LIFEPAK 20/20e defibrillator/monitor

Basic device Device with printer; includes:

■ LIFEPAK 20 operating instructions, English 3200750 26500-002538

■ LIFEPAK 20e operating instructions, English 3205878 26500-002570

■ 50-mm printer paper (package of 3) 804700-003 11240-000013

■ In-Service Video, AED Mode (NTSC)

■ In-Service Video, Manual Mode (NTSC)

■ Power cord, North America 803650-03 11140-000015

■ Warranty statement 805963 26500-000590

3202372-001
3202373-001

26500-001217
26500-002160

■ Accessory order form 3202149 26500-001050

ECG options ■ 3-lead ECG cable (AHA) 3006218-02 11110-000029

■ 3-lead ECG cable (IEC) 3006218-03 11100-000030

■ ECG electrodes (package of 3) 800139 11100-000001

(Continued on next page)

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Ordering Devices, Supplies, and Accessories (continued)

Item Description MIN CAT.

QUIK-COMBO ■ QUIK-COMBO therapy cables 3006570 11110-000040

■ REDI-PAK QUIK-COMBO electrodes, English 3008497-661 11996-000017

■ QUIK-COMBO test plug 3201673 11113-000002

SpO2 ■ LNOP® reusable adult finger sensor 3201655-003 11171-000007

■ LNOP SpO2 cable, 2.4 m (8 ft) 3201655-001 11171-000008

■ LNCS reusable adult finger sensor 3201655-011 11171-000017

■ LNCS SpO2 cable, 3.6 m (10 ft) 3201655-010 11171-000016

5-lead ECG ■ 5-lead ECG cable (AHA) 3200496-00 11110-000066

■ 5-lead ECG cable (IEC) 3200496-01 11110-000067

■ ECG electrodes (package of 3) 800139 11100-000001

Docking station*

■ Docking station and installation template 3201551 21330-000996

3-15

You can install the docking station on any flat surface using the installation template provided with the device. Place
the template where you want to install the docking station and use it as a guide to drill the holes for the screws that
secure the device.

Note: Ensure that the device has an adequate turning radius before installing the docking station.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

System Context Diagrams

Front of Device

3-lead ECG

cable

(3) rolls 50 mm
printer paper

5-lead ECG

cable

The system context diagrams illustrate how the device connects with external
equipment, including accessories, batteries, and power devices.

SpO2 cable

QUIK-COMBO

therapy cable

(QUIK-COMBO

electrodes)

Defibrillation cable

(FAST-PATCH

electrodes)

3-16

Standard paddles

S
T

X

E

E

R

P

N

A

U
M

3-pack ECG electrodes

Limb lead attachment

QUIK-COMBO

electrodes

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FAST-PATCH

electrodes

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

System Context Diagrams (continued)

Back of Device

AC power cord

ECG/sync
connector

3-17

System connector

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description

Introduction

The LIFEPAK 20/20e defibrillator/monitor is a medical device capable of
combining a variety of therapeutic and monitoring features. In addition to
automatic defibrillation, semiautomatic defibrillation, manual defibrillation, and
noninvasive pacing, the device offers SpO2 and ECG monitoring. This device
should be used indoors only (for example, a hospital or therapy center) and is
powered by ac (line) power. There is an additional internal battery for use as a
backup to ac power.

The following functional description is intended to provide service personnel with
a basic understanding of the device design. Its purpose is to assist qualified
service technicians in troubleshooting to the subassembly level. Troubleshooting
below the subassembly level outside the factory is not recommended, nor is it
within the scope of this service manual to provide the detail necessary to support
such repairs.

Refer to the diagrams on the next two pages as you review the descriptions that

3-18

follow.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

System Block Diagram

A05 User Interface PCB

A15

A11

LCD

A08

Backlight

A12

Printer

W04

Speed Dial

W03

IrDA Port

A10

SpO2 PCB

Keypad

FPGA

A06 OEM I/F PCB

Buffer

CPU

ISO

Data

Bus

Power

Supply

ISO
P/S

UART

Click a link in the diagram below to view the descriptive text.

A01 System PCB

DSP

Data

Bus

CPU

Power

Supply

A02 Patient Parameter PCB

Power

Supply

Data

Bus

CPU

Audio

Output

Paddles

Pre-Amp

Companion

Chip

ECG

Pre-Amp

Power

Switch

Power

Supply

Data

Bus

CPU

Power

Mux

A04 Therapy PCB

CPU

Cap

Charger

Pacer

Supply

A13

Capacitor

A03 Power Module

Power

Supply

Battery

Charger

Relay

Pacer

H-Bridge

A14

Inductor

Sonalert

RS-232
Drivers

3-19

W02

Speaker

W01

Therapy

Connector

W11

ECG Out/

Sync In

RS-232

W05 SpO2
Connector

W06 ECG

Connector

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A07

Battery

Back

A09 AC

Power Supply

A19 EMI

Line Filter

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A01 System Control
PCB

The A01 System Control PCB provides the central control for the device. A
reduced instruction set computing (RISC) processor, along with a real-time clock
and digital memory, serve as the central processing unit (CPU). A companion
chip provides most of the discrete interfaces required within the device, including
the RS-232 and IrDA external communication ports. The data bus provides high­speed communication between the A01 System Control PCB and other PCBs
within the device.

The major subsystems on the A01 System Control PCB are as follows:

■ Power Supplies — The A01 System Control PCB uses SW_VBatt

(switched battery voltage) from the A04 Therapy PCB to originate five power
supplies for use throughout the PCB as follows:

– ±5 V analog power for the analog ECG out, audio output circuitry, and

bus control

– +3.3 V logic power for the processor memory, companion chip and CPU

3-20

I/O
– +2.5 V logic power for the digital signal processor
– +2.0 V logic power for the CPU processor chip

– Patient-isolated ±10 and ±5 V analog power for the paddles pre-amp

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A01 System Control
PCB (continued)

■ Paddles ECG Pre-Amplifier — The paddles ECG pre-amplifier performs

patient-isolation, low-pass bandwidth filtering, and ECG sampling by means
of an analog-to-digital conversion (ADC) for the ECG signal received via the
therapy paddles. Results from the ADC are fed into the digital signal
processor (DSP) for additional filtering. Electrostatic discharge (ESD) and
defibrillation protection are provided for these signals as they pass through
the A04 Therapy PCB. Change in patient impedance is also measured using
a 57.1 kHz carrier.

■ Digital Signal Processor (DSP) — The DSP completes ECG digital signal

processing to a diagnostic quality bandwidth, acceptable for SAS, heart rate
algorithm processing, and continuous ECG storage by the CPU. In addition,
the DSP provides the necessary audio processing for voice prompts and
tones, providing digital audio signals to the audio output circuitry.

■ Audio Output — The audio output circuitry provides digital-to-analog

conversion, filtering, and power analog drive circuitry for the audio tones and
voice prompts. Up to 2 W of amplification are provided to drive the

3-21

W02 Speaker located on the front case of the device.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A02 Patient Parameter
PCB

The A02 Patient Parameter PCB collects all the patient data (3- and 5-lead
ECG and SpO2 for the device), with the exception of the paddles ECG data, and
provides preprocessed data to the system controller for AED and R-wave
algorithms, alarm control, operator display and printout, and storage. Algorithms
performed on the data before it is sent to the A01 System Control PCB include
leads-off detection and internal pacer detection. A digital signal processor (DSP)
with digital memory makes up the central processing unit (CPU) that performs
these algorithms. Communication is provided to the A01 System Control PCB
through the data bus.

The major subsystems on the A02 Patient Parameter PCB are as follows:

■ Power Supplies — The A02 Patient Parameter PCB uses switched power

from the A04 Therapy PCB with dc power from the A07 Battery to originate
three power supply voltages for use throughout the PCB as follows:

– +3.3 V logic power to drive the CPU digital signal processor and memory

3-22

– +5 V analog power to drive the A06 OEM Interface PCB
– ±5 V patient-isolated supply to drive the ECG pre-amp

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A02 Patient Parameter
PCB (continued)

A03 Power Module

■ ECG Pre-Amplifier — The ECG pre-amplifier performs the function of

patient-isolation, low-pass bandwidth filtering, and ECG sampling through
the analog-to-digital conversion (ADC) for the ECG signal received through
the W06 ECG Connector. Digital signals are passed over the isolation barrier
into the DSP for additional signal processing.

The A03 Power module is primarily responsible for selecting the best available
source to power the rest of the modules/PCBs in the system from the available
power sources. A microcontroller with built-in memory makes up the CPU.
Communication is provided to the A04 Therapy PCB through a serial interface.

The major subsystems on the A03 Power Module are as follows:

■ Power Supplies — The A03 Power Module uses ORed_VBatt (battery

voltage ORed with dc power from the A09 AC Power Supply Module) to
originate two power supply voltages for use throughout the PCB as follows:

– +5 V logic power to drive the CPU microcontroller and memory

3-23

– + 3.3 V analog power to drive the power pump for the RS-232 driver

circuits

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A03 Power Module

(continued)

■ Power Mux — The power mux switches battery power in and out of VBatt,

depending on power availability and load draw within the device. This circuit
is under supervisory control of the CPU and provides the current voltage
from the A07 Battery and A09 AC Power Supply Module to the CPU. The
circuit automatically switches from ac power to battery power if the voltage
from the ac power supply falls rapidly. Low voltage is detected by the
A09 AC Power Supply Module and broadcast to the other PCBs through the
device internal communication buses.

■ Battery Charger (LIFEPAK 20 defibrillator/monitor) — The battery charger

is a constant current charger designed specifically to support the A07 NiMH
Battery selected for the device. NiMH batteries are not designed for trickle
charging, so the A09 AC Power Supply Module keeps track of the amount of
time the device has been operating from battery power. Charging is
performed following high-use incidents and periodically when the batteries
are not in high use. Charging can occur while the unit is powered on or while

3-24

the unit is powered off, depending on need. The battery charger is designed
to charge the internal battery, usually in less than two hours.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A03 Power Module
(continued)

■ Battery Charger (LIFEPAK 20e defibrillator/monitor) — The battery charger

is a constant current-constant voltage charger designed specifically to
support the A07 Lithium Ion Battery selected for the device. Li-ion batteries
are not designed for trickle charging, so the A09 AC Power Supply Module
keeps track of the Li-ion battery's state-of-charge and, when it drops below
85%, the battery charger initiates charging of the battery (provided the
temperature is between 0° and 50° C).
device is powered on or while the device is powered off, depending on need.
The battery charger is designed to typically charge the internal battery in less
than four hours when the device is powered off and AC power is applied.

■ Sonalert — The sonalert is an audio tone generator located on the power

module that warns the user if the device is turned off while not connected to
ac power (which depletes the internal A07 Battery). This ac loss alert

alarm can be turned off. A shipping mode setup is provided to temporarily

3-25

Charging can occur while the

disable this feature when packing the device for shipment.

■ RS-232 Drivers — The RS-232 signal originates on the A01 System Control

PCB. The RS-232 drivers shift the signal levels to ±12 V prior to the system
connector output.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A04 Therapy PCB

The A04 Therapy PCB controls the pacing and defibrillation therapy features.
The primary communication between the A04 Therapy PCB and the remainder
of the device is through the data bus. A microprocessor and digital memory
make up the central processing unit (CPU) that manages communication with
the A01 System Control PCB.

The major subsystems on the A04 Therapy PCB are as follows:

■ Power Supplies — The A04 Therapy PCB uses SW_VBatt (switched

battery voltage) from the A03 Power Module to originate five power supply
voltages for use throughout the PCB as follows:

– +5 V logic power to drive the CPU microprocessor and memory
– ±15 V analog power for the pacing and therapy drive circuit
– Patient-isolated 5 V analog power for the pacing and therapy circuits
– Patient-isolated 15 V analog power for the pacing and therapy circuits
– Patient-isolated 30 V analog power for the pacing and therapy circuits

3-26

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A04 Therapy PCB
(continued)

■ Power Switch — A power switch is a control circuit that detects the ON

button selection from the A05 User Interface PCB or a timer event from the
A01 System Control PCB to power up the device. This portion of the
A04 Therapy PCB is powered at all times, with very low quiescent current
draw. When a power-on request is detected, this circuit switches VBatt
(battery and/or ac converted dc power) provided by the A03 Power Module
to the remaining PCBs in the device. Low Battery (Battery Fail) is detected
and a discrete signal is broadcast to other PCBs if battery voltage falls
rapidly or reaches the point where normal operation is no longer feasible.

■ Cap Charger — The cap charger is a high-voltage, patient-isolated circuit

that charges the A13 Energy Capacitor to the correct voltage for biphasic
defibrillation (2 to 360 joules). Control is provided by the CPU, and capacitor
voltage is provided back to the CPU for feedback. The cap charger is
designed to nominally provide maximum charge rates and to automatically
scale back to slower charge rates when low battery voltage is detected.

3-27

■ Pacer Power Supply — The pacer power supply is a patient-isolated circuit

that charges the A13 Energy Capacitor up to the correct voltage for pacing.
Control is provided by the CPU, and voltage regulation is maintained locally
within the pacer supply. Capacitor voltage is provided back to the CPU for
control through the cap charger circuitry.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A04 Therapy PCB

(continued)

■ H-Bridge — The H-Bridge is a patient-isolated circuit that creates the

biphasic defibrillation waveform. A combination of silicon controlled rectifiers
(SCR) and insulated gate bipolar transistors (IGBT) are used to place a
positive-oriented defibrillation pulse across the patient load, followed
immediately by a negative-oriented defibrillation pulse. The defibrillation
pulse is delivered through the relay and W01 Therapy Connector assembly
to the external therapy cable on the outside of the device.

■ Pacer — The pacer is a patient-isolated circuit that creates the pacing

waveform. A portion of the H-Bridge circuitry is used to support the pacer by
providing energy from the A13 Defibrillation Capacitor. A current drive is
used to control the amount of current provided to the patient during pacing.

■ Relay — The relay provides patient isolation from the pacing and

defibrillation circuitry when not in use. The relay is closed when the pacing
current is set above zero and stays closed until the pacing current is set back
to zero.

3-28

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A05 User Interface PCB

The A05 User Interface (UI) PCB is responsible for the presentation of the
acquired data to the screen display and to the printer, and for receiving all user
input. The primary communication between the UI PCB and the remainder of the
device is through the data bus. A RISC processor and digital memory make up
the CPU that manages communication with the A01 System Control PCB. The
W18 UI Flex Cable provides physical connection between the A05 UI PCB and
the A02 Patient Parameter PCB.

The major subsystems on the A05 UI PCB are as follows:

■ Power Supplies — The A05 UI PCB uses SW_VBatt (switched battery

voltage) from the A04 Therapy PCB to originate four power supplies for use
throughout the PCB as follows:

– +3.3 V logic power to drive the A11 Liquid Crystal Display (LCD) and the

A12 Printer
– +3.3 V logic power for the CPU processor and memory

3-29

– +2.5 V logic power for the field-programmable gate array

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A05 User Interface PCB

(continued)

■ Field-Programmable Gate Array (FPGA) — The Field-Programmable Gate

Array (FPGA) provides the interface between the CPU and all the user
interface peripherals. The FPGA works in conjunction with the CPU to
provide the 1/4 VGA signals to the A11 Display, the data and strobe signals
to the A12 Printer, and drive circuitry for the keypad LEDs. The FPGA
converts the inputs from the keypad switch matrix and W4 Selector into
digital words that can be read by the CPU.

■ Keypad — The keypad is the primary user input control for the device. It

consists of two parts, the keypad domes, which are located on the rear side
of the A05 UI PCB, and the elastomer keypad cover that attaches to the front
case. The keypad domes protrude through holes in the front case and
enable the key covers to activate the domes when pressed by the user. The
key presses are decoded by the FPGA and sent to the CPU for processing.
The A05 UI PCB does not recognize the
the A04 Therapy PCB.

3-30

ON switch. It passes the signal to

A06 OEM and
Mechanical
Components PCB

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The A06 OEM Interface PCB provides power to and collects SpO2 data from
the A10 SpO2 Module. Its primary function is to provide patient isolation between
the SpO2 module and the rest of the device design. In addition, it provides
physical mounting provisions for the SpO2 module.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A06 OEM and
Mechanical
Components PCB
(continued)

A07 Battery

The major subsystems on the A06 OEM PCB are as follows:

■ Power supplies — The A06 OEM Interface PCB uses power from the

A02 Patient Parameter PCB to provide the 5 V power for the A10 SpO2
Module.

■ UART and ISO buffers — The UART and ISO buffers provide patient

isolation for the serial data signals received from the A10 SpO2 Module and
routes them to the A02 Patient Parameter PCB.

On the LIFEPAK 20 defibrillator/monitor, the A07 Battery is a 2.7 Ah, 12 V, NiMH
battery that is used as an internal backup power source when ac power is not
available. This technology was selected due to its light-weight-to-power-storage
ratio and low maintenance features. NiMH batteries require a smart, non-trickle,
constant current charger that is provided by the A03 Power Module when the
device is connected to ac power. The battery wire harness interfaces directly
with the A03 Power Module. The battery is contained within the battery well

3-31

section of the bottom case. A small-bladed screwdriver is required to open the
battery door, located on the bottom of the LIFEPAK 20 defibrillator/monitor.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A07 Battery

(continued)

A08 Backlight Inverter
PCB

A09 AC Power Supply
Module

On the LIFEPAK 20e defibrillator/monitor, the Li-ion battery technology was
selected for the same reasons as NiMH, but they are even lighter in weight.
Li-ion batteries require a constant current-constant voltage charger that is
provided by the A03 Power Module when the device is connected to ac power.

The A08 Backlight Inverter provides power to the internal fluorescent backlight
in the A11 Active Display. Filtered SW_VBatt is provided to the A08 Backlight
Inverter through the A05 User Interface PCB. The output of the inverter is
1000 to 1500 RMS, open-circuit power to the internal A11 Active Display
backlight.

The A09 AC Power Supply Module is a 60-Watt OEM power supply, designed
to meet IEC 60601-1 standards, converting 120/240 Vac (60/50 Hz) input signals
to nominal 12 Vdc. The ac power supply provides power to the A03 Power
Module for routing to the other PCBs in the device. The 12 Vdc output from the
ac power supply is directly diode ORed into the SW_VBatt (switched battery
voltage) to power on the A04 Therapy PCB. The A03 Power Module sits above

3-32

the ac power supply and plugs directly into the ac power supply’s power
connector. Both the A03 Power Module and the ac power supply are held
mechanically in place by the power assembly bracket.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A10 SpO2 Module

A11 Active Display/
Lens

The A10 SpO2 Module is a Masimo MS-5 (LIFEPAK 20 defibrillator/monitor) or
Masimo MS-11 oximetry module. This patented OEM module performs all
functions related to oxygen saturation measurement, including sensor drive.
Measurement results are passed serially through the A06 OEM Interface PCB to
the A02 Patient Parameter PCB where the SpO2 data is combined with the
patient ECG data and sent to the A01 System Control PCB for display
processing and storage. The SpO2 module mounts directly to the A06 OEM
Interface PCB.

The A11 Active Display measures 14.5 cm (5.7-inch) (measured diagonally)
and uses 1/4 VGA protocol with a 320 wide by 240 high pixel array. The display
has a protective lens, held in place against the front case by a sheet metal
bracket, and an elastomeric seal. This display features full-color, high­brightness, wide-viewing-angle capability, and is fully visible in bright-light
situations (up to direct sunlight operations). The A11 Active Display also contains
an internal backlight for visibility in low-light situations. There is no contrast

3-33

control.

A12 Printer Module

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The A12 Printer Module is a 50 mm, stepper motor-driven recorder. The printer
receives serial data and commands from the A05 User Interface PCB, converts
the print data, and controls the motor-drive signals to perform the “muscle” part
of printing. The printer returns status signals derived from the paper supply
sensor and printer door to the A05 UI PCB.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A13 Energy Capacitor

A14 Inductive Resistor

The A13 Energy Capacitor is a metallized film capacitor used for energy
storage. The energy capacitor stores energy for both pacing and defibrillation
therapies. The actual capacitance of the energy capacitor is calculated during
the defibrillation calibration procedure. The nominal value is 196 μF. The energy
on the capacitor is removed when the device is turned off. Energy is provided to
the A04 Therapy PCB for pacing and defibrillation therapy through the A14
Inductor Resistor. The energy capacitor mounts above the A04 Power PCB by
means of a capacitor support. Wires from the energy capacitor connect directly
to the A04 Therapy PCB.

The A14 Inductive Resistor is used as an internal dump load to dissipate
energy from the A13 Energy Capacitor. Energy is removed (dumped) from the
A13 Energy Capacitor when the device is turned off and, during operation, when
energy remains on the capacitor for an extended period of time. The
A14 Inductive Resistor provides a nominal 5 ohm load in the energy delivery
path. The inductor mounts to the board stack bracket. Wires from the
A14 Inductive Resistor connect directly to connectors on the A04 Therapy PCB.

3-34

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

A15 Elastomer Keypad

A19 AC Input Power
Filter

W01 Therapy
Connector Assembly

The A15 Elastomer Keypad displays the common device controls (those not
available using the
depending on the features installed in a specific device.

The A19 AC Input Power Filter provides input current overload and
electromagnetic interference (EMI) protection for the device. The filter is a potted
module containing passive filter elements (inductors and capacitors), with in-line
fuses in both the line and neutral leads. The A19 AC Input Power Filter is
designed to meet the safety requirements in IEC 60601-1.

The W01 Therapy Connector Assembly provides a patient connection port
used for delivery of either defibrillation or pacing therapeutic energies. The
standard and premium models allow the attachment of all available electrode
accessories, including QUIK-COMBO pacing/defibrillation/ECG electrodes,
external hard paddles (with built-in pediatric paddles), and internal paddles with
discharge control. The W01 Therapy Connector mounts directly to the bottom
case and the wire harness plugs directly into the A04 Therapy PCB at J13 and

3-35

SPEED DIAL). The number of keys on this keypad varies,

J14. The therapy connector protrudes through a hole in the front case to provide
user access for connecting the various external cable options.

Note: The device supports all existing LIFEPAK 12 defibrillator/monitor

accessories (including external sterilizable paddles, internal paddles,

and external adult paddles with posterior attachments).

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

W02 Speaker Assembly

W03 Infrared Data
(IrDA) Assembly

The W02 Speaker Assembly is used to deliver device tones and voice prompts,
including warnings and alarms. The OEM W02 Speaker is a small, compact, low­profile speaker capable of producing a one-watt output with a frequency
response from 300 to 7000 Hz. The input to the speaker is from the audio power
amplifier in the A01 System Control PCB. The speaker is mounted directly on
the front case and the speaker wire harness plugs into the W25 Speaker
Harness Extension Cable.

The W03 IrDA Assembly is used to provide high-speed wireless
communications to data management devices. The OEM W03 IrDA port
supports IrDA version 1.1 communications with asynchronous serial rates up to
4 Mbits/second. The IrDA port is mounted directly on the bottom case and the
flex circuit connects directly to the A01 System Control PCB at J08. An infrared
lens is molded into the device front case directly in front of the IrDA port. The
IrDA port and front case lens are aligned so that direct communications can
easily be made with a portable data receiver held by an operator or placed on a
table.

3-36

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

W04 Speed Dial
Assembly

W05 SpO2 Assembly

W06 ECG Connector

The W04 Speed Dial Assembly is a rotary data entry device mounted on the
LIFEPAK 20/20e defibrillator/monitor front case. It is used to control menu
access and selection for user functions that are not supported directly by hard
keys on the keypad. The selector detects rotation (in either a clockwise or
counterclockwise direction) and presses (clicks), and then passes this
information on to the A05 UI PCB at J32 for user-input decoding.

The W05 SpO2 Assembly provides a connecting point for the external SpO2
cable. The SpO2 connector is mounted on the bottom case of the device, and
the flex circuit connects directly to the A10 SpO2 Module.

The W06 ECG Connector provides a connection point for the standard 3- and
5-lead patient ECG cables. The ECG connector is mounted on the bottom case
of the device, and the attached wire harness connects directly with the A05
Patient Parameters PCB at J23. The ECG connector is also compatible with the
LIFEPAK 12 defibrillator/monitor, 3-wire or 4-wire, patient ECG cables.

3-37

W07 Capacitor
Discharge Cable

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The W07 Capacitor Discharge Cable provides a capacitor discharge point by
connecting to the A04 Therapy PCB at pin 5 of J02.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

W08 Battery Cable

W09/W10 Power to
Therapy PCB Cables

W11 ECG Sync/System
Cables

On the LIFEPAK 20 defibrillator/monitor, the W08 Battery Cable connects the
A07 Battery to the A03 Power Module. The cable is hardwired to the A03 Power
Module and the other end connects to the A07 Battery at J85.

On the LIFEPAK 20e defibrillator/monitor, the W08 Battery Cable connects the
A07 Battery at J85 to the A03 Power Module at J50.

The W09 and W10 Power to Therapy PCB Cables connect the A03 Power
Module to the A04 Therapy PCB. W09 is a replaceable cable that connects to
the A04 Therapy PCB at J16 and to the A03 Power Module at J41.

On the LIFEPAK 20 defibrillator/monitor, W10 is hardwired to the A03 Power
Module and connects to the A04 Therapy PCB at J17.

On the LIFEPAK 20e defibrillator/monitor, W10 connects to the A04 Therapy
PCB at J17 and to the A03 Power Module at J51.

The W11 ECG Sync/System Cables connect the ECG sync connector and the
system connector to the A03 Power Module at J47.

3-38

W12 Grounding Cable

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The W12 Grounding Cable provides a grounding path for the Speed Dial.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

W13 AC Power Cable

W14 Printer Flex Cable

W15 LCD to UI PCB
Cable

W16 Display Jumper
Cable Extender

W17 Backlight Inverter
Cable

The W13 AC Power Cable connects the A09 AC Power Supply Module at J02
with the A03 Power Module (hard-wired connection) for the LIFEPAK 20
defibrillator/monitor, and at J49 for the LIFEPAK 20e defibrillator/monitor.

The W14 Printer Flex Cable connects the A05 UI PCB at J34 with the A03 Power
Module at J45 and the A12 Printer.

The W15 LCD to UI PCB Cable connects the A11 LCD Display PCB at CN1 with
the A05 UI PCB at J36.

The W16 Display Jumper Cable Extender connects the A11 LCD Display PCB at
P77 to the A08 Backlight Inverter PCB at CN2.

The W17 Backlight Inverter Cable connects the A08 Backlight Inverter PCB at
P74 to the A05 UI PCB at J37.

3-39

W18 UI Flex Cable

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The W18 UI Flex Cable connects the A02 Patient Parameters PCB at J21 and
J22 to the A05 UI PCB at J31.

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LIFEPAK 20/20e Defibrillator/Monitor Device Description

Functional Description (continued)

W19 – W24 Grounding
Cables

W25 Speaker Harness
Extension Cable

The W19 through W24 Grounding Cables provide grounding paths for various
device components.

The W25 Speaker Harness Extension Cable connects the W02 Speaker
Assembly to the A01 System PCB at J5.

3-40

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LIFEPAK 20/20e Defibrillator/Monitor Section Contents

5

Modes of

When the device is turned on, it operates in one of five modes. Choose from the
following links to learn more about a particular operating mode.

Operation

Manual Mode

AED Mode

Setup Mode

Service Mode

Inservice Mode

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Manual Mode

Turning On the Device
in Manual Mode

Manual mode enables the user to determine when to deliver a shock.

To configure the device to turn on in manual mode (the default is AED mode):

1. Display the

2. Select

3. Select the

The following table shows all the available power-on options.

Mode/Response Response Description

Manual/Direct Turns on in manual mode; direct access between AED

AED/Direct Turns on in AED mode; direct access between AED

AED/Confirmed Turns on in AED mode; confirmation required to enter

MANUAL ACCESS in the MANUAL MODE submenu.

SETUP menu and select MANUAL MODE.

DIRECT option.

and manual modes.

and manual modes.

manual mode.

4-2

AED/Passcode Turns on in AED mode; passcode required to enter

manual mode.

If the device is placed in manual mode and then reset to AED mode by pressing

ANALYZE button, there are no additional manual mode reprompts or

the
passcode requests until the device power has been cycled.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Manual Mode (continued)

Starting Manual Mode
from AED Mode

If the AED MODE LED is on when the device is turned on, the device is in AED

Mode.

To enter manual mode:

■ Open the door (if installed) by pressing the MANUAL button on the lower left

■ Press one of the following buttons:

To restart AED mode, press the ANALYZE button or cycle the device power.

Note: Closing the door when in manual mode does not restart AED mode

4-3

corner of the door.

-OR-

– ENERGY SELECT
– CHARGE
–PACER
–LEAD

operation.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

AED Mode

4-4

In AED mode (the default setting), the device automatically evaluates the patient
rhythm to determine if a shock is needed and prompts the user to press the

SHOCK button to deliver a shock.

The device can be reconfigured to turn on in manual mode, if desired.

To set options for AED mode, display the
AED mode options include energy protocol, voice prompts, ECG display, CPR
time, and others. For a complete description of the options available, refer to the
Defining Setup Options section in the operating instructions.

Note: If configured to turn on in AED mode, opening the door on the device

turns off AED mode and places the device in manual mode. Closing the

door does not restart AED mode operation. To restart AED mode, press

ANALYZE or cycle the device power.

SETUP menu and select AED MODE.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Setup Mode

Introduction

4-5

The operating defaults for the device are configured in the SETUP menu. Options
include manual mode and AED mode operating characteristics, alarm setup,
time-of-day clock, and others. There is also a factory-reset option that resets the
device to the factory default settings, except the maintenance interval, which
remains unchanged. After the setup is complete, turn off the device to save the
configuration. The next time the device is turned on, the operating defaults last
selected will be active.

For a complete description of setup options, refer to the Defining Setup Options
section in the operating instructions.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Setup Mode (continued)

Displaying the Setup
Menu

To display the

1. Press and hold the
button. When the

SPEED DIAL LED illuminates, indicating that the SPEED DIAL is active.

The

2. To enter the passcode, rotate the
press the

SETUP menu:

OPTIONS and EVENT buttons, and then press the ON

ENTER PASSCODE overlay appears, release the buttons.

SPEED DIAL to select a number and then

SPEED DIAL. As a number is selected, it changes to an asterisk for

passcode protection, and the next digit in line highlights.

Note: The factory default passcode (
passcode (
access to the

5433 or LIFE) can be used in place of other passcodes to gain

SETUP and SERVICE menus.

0000) or the reserved technician

3. When you have entered the passcode, press the
menu appears. The

PASSCODE INCORRECT-TRY AGAIN message appears if

an incorrect passcode is entered.

4-6

SPEED DIAL. The SETUP

To exit the

SETUP menu, turn the device OFF.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Setup Mode (continued)

Setup Menu Options

4-7

The following table defines the SETUP menu options.

Note: Refer to the Defining Setup Options section in the operating instructions

for complete descriptions of all options.

Option Description

GENERAL

MANUAL MODE

AED MODE

PACING

MONITORING

EVENTS

ALARMS

Set up general device options

Set up manual mode defaults

Set up AED mode defaults

Set up pacing defaults

Set up monitoring defaults

Set up items to appear on the event overlay

Set up alarms defaults

PRINTER

CLOCK

RESET DEFAULTS

Set up printer defaults

Set up date and time defaults

Reset all defaults to factory configuration settings

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

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Setup Mode (continued)

Setup Menu Options

(continued)

Saving the Setup
Configuration

Option Description

PRINT DEFAULTS

SEND CONFIG

SET PASSCODE

SERVICE

If the device owner uses a setup configuration that cannot be disturbed, two
choices are available to preserve this setup during repair procedures.

■ The first method is to print the setup configuration. When service is

complete, you can verify the setup and then manually reset the
configuration.

■ The second method is to transfer the setup configuration to another

device. After service is complete, transfer the configuration back to the
original device.

Print a report of current configuration settings.

Send device configuration to another device.

Set passcodes for setup mode and archives mode.

Display the SERVICE menu.

4-8

Note: Saving the configuration by transferring it to another device requires that

both devices have the same software version. Otherwise, unexpected
results can occur when the configuration is restored to the repaired
device.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

(Conti

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Setup Mode (continued)

Creating a Passcode

4-9

To create a passcode, select SET PASSCODES in the SETUP menu.

Select one of the following options in the

SET PASSCODES submenu.

Option Description

SETUP MODE Set passcode to enter setup mode.

ARCHIVES ACCESS Select a passcode access protocol for archives mode:

1. No Passcode (default)

2. Archives Only

ARCHIVES MODE Set passcode to enter archives mode.

DELETE RECORDS Set passcode to delete records in archives mode.

■ ARCHIVES ACCESS – Set the device to any of the following protocols (refer to

3. Delete Only

4. Archive/Delete

the table above):

1. Allow unlimited access to archives mode and allow records to be deleted.

2. Require a password to enter archives mode, but allow records to be

deleted.

3. Allow unlimited access to archives mode, but require a password to delete

records.

4. Require a password to enter archives mode and delete records.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Setup Mode (continued)

Creating a Passcode

(continued)

4-10

■ SETUP MODE – Create a new passcode to access the SETUP menu. The
ENTER PASSCODE overlay appears with the first digit highlighted. Rotate the
SPEED DIAL to select digits.

■ ARCHIVES MODE – Create a passcode to enter archives mode. The ENTER
PASSCODE overlay appears with the first digit highlighted. Rotate the SPEED
DIAL to select digits.

■ DELETE RECORDS – Create a passcode to delete records in archives mode.

ENTER PASSCODE overlay appears with the first digit highlighted. Rotate

The

SPEED DIAL to select digits.

the

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)

Service Mode

Introduction

The service mode functions enable qualified service technicians to:

Function Description

*Perform device
calibration routines

*Perform device tests ■ Keypad Test

View the device status
registers

■ Defibrillation

Calibration

■ Pixels Test

■ Device Log Status

■ Service Log Status

■ Device Data

■ Printer Test

■ Audio Test

■ Counters Status

■ Clear Memory

Set the service mode passcode

Set the maintenance prompt interval

4-11

Reset the maintenance prompt interval

* The performance inspection procedure must be performed from start to
finish in the order presented.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Service Mode (continued)

Displaying the Service
Menu

Service Menu Options

To display the SERVICE menu:

1. Display the

2. Select

3. Enter the service mode passcode (

4. After you enter the passcode, press the

The SERVICE menu options include:

Option Description

Defib Cal Perform defibrillator calibration procedure.

Tests Follow performance inspection procedure.

Status Display device status.

SETUP menu.

SERVICE from the SETUP menu.

0000 or 5433).

SPEED DIAL. The SERVICE menu

appears. (If an incorrect passcode is entered, the

TRY AGAIN message appears.)

4-12

PASSCODE INCORRECT -

Set Passcode Set the service mode access passcode.

Maint Prompt Prompt user to perform preventative maintenance.

Setup Return to main SETUP menu.

To exit the

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SERVICE menu, turn the device OFF.

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(Conti

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Service Mode (continued)

Setting the Service
Mode Passcode

To set a service mode passcode:

1. Select

2. Enter a passcode by rotating the

3. When the last digit is entered, the

SET PASSCODE in the SERVICE menu. The SERVICE/SET PASSCODE

overlay appears.

pressing the

SPEED DIAL.

4-13

SPEED DIAL to select a number and then

SERVICE menu appears.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Service Mode (continued)

Setting a Maintenance
Prompt Interval

The LIFEPAK 20 defibrillator/monitor can be set to display a screen message
that alerts the user when the maintenance prompt interval date has passed. The
screen message
10 minutes after the device is powered on. The device maintenance interval can
be turned off or set to 3 months, 6 months, or 12 months; the factory default is

OFF, but it can be activated by a service technician.

To change the scheduled maintenance interval:

1. Display the

2. Select

3. Select

4. Select the desired interval.

4-14

MAINTENANCE DUE appears on the screen for the first

SERVICE menu.

MAINT PROMPT. The SERVICE/MAINT PROMPT submenu appears

showing the current prompt date for scheduled maintenance (if set).

INTERVAL. The interval choices are: OFF, 3 MONTHS, 6 MONTHS, and

12 MONTHS.

5. Turn the device OFF.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Service Mode (continued)

Resetting the
Maintenance Prompt

After completing scheduled maintenance, reset the maintenance prompt counter
to clear the
scheduled maintenance.

To turn off or reset the scheduled maintenance prompt:

1. Display the

2. Select

3. Select

4. Turn the device OFF.

4-15

MAINTENANCE DUE message and begin the count for the next

SERVICE menu.

MAINT PROMPT. The SERVICE/MAINT PROMPT menu appears, showing

the current prompt date for scheduled maintenance.

RESET. The prompt date is revised to the next scheduled maintenance

date.

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LIFEPAK 20/20e Defibrillator/Monitor Modes of Operation

Inservice Mode

Introduction

Entering Inservice
Mode

4-16

Inservice mode enables users to practice or demonstrate the monitoring
functions of the device. The functions include:

■ Selecting ECG lead selection, size, and volume, and moving ECG waveform

with heart rate

■ SpO2

■ Alarms

■ Events

Note: No therapy features are available in the inservice mode.

To enter inservice mode:

1. Remove all cables from the device. Inservice mode cannot be entered if
cables are attached to the device.

2. While holding down the
Release these buttons when the

HOME and EVENT buttons, turn the device ON.

INSERVICE overlay appears.

To exit inservice mode, turn the device OFF.

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LIFEPAK 20/20e Defibrillator/Monitor Section Contents

6

Performance Inspection Procedure

The performance inspection procedure (PIP) is a set of manual test procedures
used for an operational closed-case evaluation of the device. This section
describes the test procedures you will perform to determine if the device is
operating within the required specifications. Investigate and correct any
malfunctions or out-of-tolerance conditions detected during the PIP.

The PIP comprises safety and performance tests recommended by AHA/ASHE
(American Hospital Association/American Society for Hospital Engineering)
Maintenance Management for Medical Equipment and International
Electrotechnical Commission (IEC) Technical Report 1288-2, Maintenance of
Cardiac Defibrillators-Monitors.

Perform the PIP as part of a regularly scheduled preventive maintenance
routine. Also, perform the PIP after any repair, replacement, or calibration
procedure. Print the PIP Checklist to record the test results. Refer to the
Operator Checklist in the operating instructions for additional items.

PIP – Scope and Applicability
PIP – Resource Requirements
PIP – Test Equipment Requirements
PIP – Instructions
PIP – Summary of Leakage Current Specifications
PIP – Checklist

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Scope and Applicability

The PIP applies to the LIFEPAK 20/20e defibrillator/monitor only. To complete
the PIP, perform the manual tests outlined in the PIP – Instructions section. All
PIP tests applicable to the device configuration under test must be performed
from start to finish in the order presented.

Refer to PIP – Resource Requirements for a listing of the necessary
qualifications for PIP equipment, test equipment verification, workstation power,
and personnel.

Refer to PIP – Test Equipment Requirements for a listing of test equipment,
including specifications, required to complete the PIP.

You can print the PIP Checklist and use it to record your results.

5-1

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Resource Requirements

Equipment

Test Equipment
Verification

Workstation Power

Personnel
Requirements

To perform the PIP, you must use the equipment listed in the PIP – Test

Equipment Requirements table. Although the table lists specific test equipment

by manufacturer, test equipment with equivalent specifications may be
substituted.

All test equipment used to perform the PIP must have a current calibration label,
issued by a certified calibration facility.

The ac line power to the workstation used must be connected to a grounded
power source. The workstation must have electrostatic discharge (ESD)

protection.

Service technicians who perform the PIP must be properly qualified and
thoroughly familiar with the operation of the device, meeting the requirements
described in Service Personnel Qualifications.

5-2

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Test Equipment Requirements

The following table lists the test equipment required to conduct the PIP.

Equipment Specifications Manufacturer

Patient simulator Simultaneous 12-lead output

Rates: 30 bpm, 120 bpm @ 1 mv
Rate accuracy: +

Defibrillator analyzer

Safety analyzer 110 or 220 Vac line voltage

1

Energy range: 0 to 450 J

Load resistance: 50 Ω ±1%
Accuracy: ±2% +2 J

Waveforms: NSR, VF, and sine wave

Current range: 0-1999 μA
Current accuracy: 5% of reading or 1 digit (whichever
is greater)

1%

Fluke® Biomedical Corp.
215A/217A

Fluke Biomedical Corp.
QED 6™, with test posts
accessory (software version

2.07 or greater)

Dale model 600 (120 Vac
line input) or 600E (240 Vac
line input)

5-3

Function generator 15 MHz function/arbitrary waveform

Resolution: 3 digits, amplitude and offset.
Accuracy: ±1% (<1 kHz)

1. Some energy meters are not accurate for biphasic waveforms. Contact your defibrillator analyzer’s manufacturer for more information.

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Agilent 33120A

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

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PIP – Test Equipment Requirements (continued)

Equipment Specifications Manufacturer

Decade resistance box 0 to 9 MΩ resistance box

Resolution: 1 Ω; accuracy: ±1%

Fixture Assembly, Impedance
box to electrode adapter

Analog ECG output cable
(optional)

DB15 cable Connects to the DB-15 connector N/A

QUIK-COMBO test post adapter Connects to QUIK-COMBO therapy cable Medtronic

3-lead ECG cable Medtronic

5-lead ECG cable Medtronic

Connects to the DB-15 connector Medtronic

IET RS-200 Resistance Substituter

Medtronic
MIN 3205651

MIN 3202553

MIN 3005302

MIN 3006218-02

MIN 3200496

5-4

General purpose oscilloscope Bandwidth: dc to 2 MHz

Vertical accuracy: +
Horizontal time base accuracy: +

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3% (5 mV – 5 v/div.)

5%

Tektronix® 2232 or equivalent

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Test Equipment Requirements (continued)

Equipment Specifications Manufacturer

QUIK-COMBO electrode cable Medtronic

MIN 3006570

QUIK-COMBO test plug accessory Medtronic

MIN 3201673

Standard paddles Medtronic

MIN 3200936

Chassis leakage cable Dale model 600/100, 2.4 m (8 ft)

LIFEPAK 20/20e SpO2 leakage
cable

Medtronic
PN 3201832-004, -005, -006

5-5

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PIP – Instructions

General Instructions

Exterior Physical
Inspection

5-6

This section lists the general instructions for performing the PIP.

■ Troubleshoot and correct all failures and error codes before beginning the

PIP.

■ Always start the PIP from the beginning of the procedure.

■ Perform the PIP in the presented order.

■ Print the PIP Checklist and record your results.

Refer to Troubleshooting to correct failures, and then repeat the PIP.

To perform an exterior physical inspection:

1. Inspect the device exterior for the following:

– Damage
– Excessive wear
– Improper mechanical function
– Damaged connectors

2. Lift and turn over the device and listen for loose or rattling hardware. Locate
any loose or rattling hardware and tighten or replace it.

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Instructions (continued)

Exterior Physical
Inspection (continued)

Cleaning the Paddles

3. Inspect the rubber feet on the underside of the lower enclosure. Reinstall or
replace rubber feet as necessary.

4. Inspect the therapy, ECG, SpO2 (if equipped), DB-9, DB-15, AED door, and
IrDA connectors for damage, cracks, or contamination.

5. Inspect the keypad and overlays for damage, cracks, or separations.

6. Check all accessory cables, paddles, SpO2 sensors, and related items for
expiration dates, general condition, and suitability for use.

7. Inspect carrying strap and mounts (if the device is equipped with them).

To clean the paddles:

1. Disconnect the adult paddle plate from the paddle assembly.

2. Clean the spring contact of the adult paddle with alcohol.

5-7

3. Clean the pediatric electrode surface with alcohol.

4. Reattach the adult paddle plate to the paddle assembly.

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Instructions (continued)

PIP Setup WARNING!

Shock hazard. The device discharges up to 360 joules of electrical energy

through the device cable. You must safely discharge this electrical energy
as described in this PIP. Do not attempt to perform this procedure unless
you are thoroughly familiar with the operation of the device.

To set up the device in preparation for the PIP:

1. Install a roll of paper into the printer.

2. Connect the ac power cord to the device.

3. Connect the QUIK-COMBO electrode cable (or optional standard paddles) to
the therapy connector.

5-8

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Instructions (continued)

Power-On/Self-Test

To perform the power-on/self-test:

1. Press

2. Verify that the device display illuminates and the initial display screen
appears, as shown to the upper left.

Verify the AC Mains indicator is ON.

3.

4. Verify the Service indicator is off.

5. Turn the device OFF.

6. Continue to the next test.

ON to initiate the nominal, five-second, power-on, self-test routine.

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Instructions (continued)

Date and Time test To test the device date and time:

1. Turn the device ON.

2. Press Options key.

3. Select Date/Time...from the Options menu.

4. Verify that the correct date and time values are displayed on the LCD.

Note: If the date and time are incorrect, set date and time as needed.

5. Turn the device off.

6. Continue to the next test.

5-10

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Instructions (continued)

Recording Operating
Data

(Optional) To record the operating data onto the PIP Checklist, perform the
following steps:

1. Display the

Status Features for more information.)

2. Select
since last reset (shown in boxes) and total shocks since the device was built.
Select

3. Select

4. Select

– Power Cycle Count
– Pacing Count
– Shock Count
– Power On Time

COUNTERS in the SERVICE/STATUS submenu. Record the shocks

CLEAR ALL to reset the counters.

PREVIOUS PAGE.

DEVICE LOG in the SERVICE/STATUS submenu. Record the following:

5-11

SERVICE menu and select STATUS. (Refer to Using the Service/

– Printer On Time
– SpO2 Operating Time

5. Select

6. Continue to the next test while still in service mode.

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PREVIOUS PAGE twice to return to the SERVICE menu.

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LIFEPAK 20/20e Defibrillator/Monitor Performance Inspection Procedure

PIP – Instructions (continued)

Contrast Test — LCD

(Optional) To test the screen contrast:

1. Select
square block appears in the center of the screen, as shown to the left.

2. After five seconds, the

3. Press the

4. Continue to the next test.

TESTS in the SERVICE menu, and then select CONTRAST. Verify a

5-12

PRESS SPEED DIAL TO EXIT message appears.

SPEED DIAL to return to the SERVICE/TESTS submenu.

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