Philips M3535A, M3536A User manual

Name: Philips M3535A
Brand: Philips
SKU: 6513953
Rating: 4.7 (3 reviews)

4.7 (3)

M O N I T O R / D E F I B R I L L A T O R

H E A R TS TA R T M R x

S e r v i c e M a n u a l

M 3 5 3 5 A

M 3 5 3 6 A

About This Edition

Edition 4

Printed in the USA

Publication number M3535-90900

The information in this document applies to the HeartStart MRx product version indicated below. This information is subject to change without notice.

Philips shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

Edition History

Edition	Product Version	Print Date

1	A.00/A.01	December, 2003

2	A.02 and earlier	June, 2004

3	B.03 and earlier	November, 2004

4	B.xx and earlier	January, 2005

Koninklijke Philips Electronics N.V.

All rights are reserved. Permission is granted to copy and distribute this document for your organization’s internal educational use. Reproduction and/or distribution outside your organization in whole or in part is prohibited without the prior written consent of the copyright holder.

SMART Biphasic is a registered trademark of Philips.

FilterLine is a registered trademark of Oridion Medical Ltd.

Use of supplies or accessories other than those recommended by Philips may compromise product performance.

THIS PRODUCT IS NOT INTENDED FOR HOME USE.

IN THE U.S., FEDERAL LAW RESTRICTS THIS DEVICE TO SALE ON OR BY THE ORDER OF A PHYSICIAN.

Notice

Medical Device Directive

The HeartStart MRx complies with the requirements of the Medical Device Directive 93/42/EEC and carries the 0123 mark accordingly.

Manufacturer

Philips Medical Systems

3000 Minuteman Road

Andover, MA USA 01810-1099

(978) 687-1501

Authorized EU-representative:

Philips Medizin Systeme Böblingen GmbH

Hewlett Packard Str. 2

71034 Böblingen

Germany

Canada EMC:ICES-001

Warning

Radio frequency (RF) interference from nearby transmitting devices may degrade the performance of the HeartStart MRx. Electromagnetic compatibility with surrounding devices should be assessed prior to using the monitor/defibrillator.

Conventions Used in This Manual

This Service Manual contains the following conventions:

WARNING Warning statements describe conditions or actions that can result in personal injury or loss of life.

CAUTION Caution statements describe conditions or actions that can result in damage to the equipment or loss of data.

NOTE Notes contain additional information on usage.

TIP Tips provide hands-on insight into servicing this product.

TEXT	represents messages that appear on the screen
[Softkey]	represents softkey labels that appear on the screen above or below the
	button to which they correspond.

On-line viewing only

Hypertext	represents hypertext links, which will display as blue; click on
	the blue link to go to that destination, then click on
	the blue destination to return.

Abbreviations

Name	Abbreviation
HeartStart MRx Monitor/Defibrillator	monitor/defibrillator
	device
Noninvasive Blood Pressure	NBP
End-tidal carbon dioxide	EtCO2
Carbon dioxide	CO2
Pulse Oximetry	SpO2

Table of Contents

1 Introduction	1
Who Should Use This Manual	1
Overview	1
Features and Capabilities	2
Tour of the Device	3
Right Side	4
Left Side	5
Rear	6
Top	7
General Service Information	8
Installation	8
Display Menus	8
Passwords	8
Upgrades	8
Preventive Maintenance	8
Repair Philosophy	9
Accessing Service Mode	10
Navigating in Service Mode	11
Service Mode Functions	12
Other Resources	16
2 Maintenance	17

Overview	17
Maintenance Tools and Equipment	18
Checking the NBP Module	19
NBP	19
Checking the CO2 Module	23
CO2	23
3 Troubleshooting	33

Overview	33
Troubleshooting Tools and Equipment	34
Obtaining Replacement Parts	34
Ready For Use Indicator	35
Automated Tests	36
Automated Test Summary	36

iii

Operational Check	39
Operational Check Report	43
Operational Check Summary	44
Service Mode Tests	44
Troubleshooting Methodology	45
Troubleshooting Flowcharts	47
Troubleshooting Tables	53
Audio Tones	54
Status Log Errors	55
Startup Errors	62
General Problems	63
ECG Monitoring Problems	64
NBP Monitoring Problems	66
SpO2 Monitoring Problems	67
CO2 Monitoring Problems	68
Defibrillation Problems	70
Pacing Problems	73
Printing Problems	74
Display Problems	75
Audio Problems	75
Controls Problems	76
Internal Memory Problems	77
External Data Card Problems	77
4 Repair	79

Overview	79
Who Should Perform Repairs	80
Repair Philosophy	80
Calling for Service	81
Repair Notes	82
Safety Precautions	82
Flex Circuit Connections	82
Flex Circuit Handling	83
Internal Connections	83
Cable and Assembly Placement	83
Device Reassembly	83
Disposal	84
Disposing of Empty Calibration Gas Cylinders	84
Repair Tools and Equipment	85
Key Components	85

External Assemblies	86
Accessory Pouches	87
Bedrail Hook Mount	89
Therapy Knob	90
Labels	91
Printer Assembly	93
Paddle Tray	95
Paddle Tray 50 ohm Load Resistor	98
Handle and Cap Plate	100
Opening the case	102
Discharge the Power Supply Capacitors	102
Separate the Case	102
Discharge the Therapy Capacitor	105
Disconnect the Case Halves	106
Internal Assemblies - Front Case	107
Overview of Front Case	108
PCMCIA Hole Plug	109
Speaker and Microphone Assembly	111
Internal Memory Card	113
SpO2 PCA	115
Measurement Module Panel	117
Therapy Switch	119
Fan Assembly	121
Processor PCA	123
Clock Battery	132
Printer Connector PCA	133
Display Assembly	135
Ready For Use Indicator	138
Front Panel Buttons	140
Front Case Assembly	141
Internal Assemblies - Rear Case	144
Overview of Rear Case	145
Therapy Capacitor	146
Power PCA	148
NBP and CO2 Module Tray	152
Therapy PCA	154
Therapy Port	158
NBP Module	160
CO2 Module	162
CO2 Compartment Door	167
Battery Connector PCA	169
Rear Case Assembly	174
Closing the case	176

5 Performance Verification	179
Overview	179
Required Testing Levels	180
External Repairs/Replacements	180
Printer Replacement	181
Internal Repairs	181
Verification Test Equipment	182
Test and Inspection Matrix	184
Performance Verification Procedures	190
Visual Inspection	191
Service Mode Tests	192
Functional Checks	200
Safety Tests	208
6 Parts and Accessories	211

Overview	211
Parts and Accessories Notes	212
Ordering Replacement Parts	212
Ordering Supplies and Accessories	212
Key Component Tracking	212
Replacement Parts	213
Electrical Assemblies	214
Processor PCA	214
Other Replacement PCAs	215
Other Electrical Assemblies	216
Individual Electrical Parts	216
External Electrical Components	217
Internal Cables	218
Paddles	219
Mechanical Assemblies	220
Replacement Mechanical Assemblies	220
Individual Mechanical Parts	221
Labels	222
Instruction Label Sets	222
Hazardous Shock Warning Label Set	223
Branding Label Set	223
Speaker Label Set	223
Connector Label Set	223
Supplies and Accessories	224
Key Components	229

7 Theory of Operation	233
Overview	233
Schematic Diagrams	235
System Level Interconnections	236
Signal and Data Flow	237
ECG Signal Flow	238
Functional Descriptions	239
Processor PCA	239
Therapy PCA	240
Power PCA	240
Battery Connector PCA	240
Power/Batteries	240
Display Assembly	241
Indicators	242
RFU Indicator	242
Front Panel Buttons	242
Therapy Knob	242
Paddle Indicators and Controls	242
Printer Assembly and Printer Connector PCA	243
ECG Monitoring Functions	243
Defibrillation	244
Transcutaneous Pacing	246
Audio	246
Data Storage	247
Clock Backup Battery	247
NBP Module	247
SpO2 PCA	247
CO2 Module	248

vii

8 Specifications and Safety	249
Specifications	249
General	249
Defibrillator	249
ECG and Arrhythmia Monitoring	252
Display	254
Battery	254
Thermal Array Printer	255
Noninvasive Pacing	255
SpO2 Pulse Oximetry	256
NBP	256
EtCO2	257
AwRR	258
Calibration Gas for CO2 Measurement System	259
12-Lead ECG	259
Patient Data Storage	259
Environmental (M3535A)	259
Environmental (M3536A)	261
Symbol Definitions	263
Safety Considerations	266
General	266
Defibrillation	268
Battery	268
Electromagnetic Compatibility	270
Reducing Electromagnetic Interference	270
Restrictions for Use	270
Emissions and Immunity	270
Guidance and Manufacturer’s Declaration	271
Waveforms	278
1 Index	283

Introduction

This Service Manual provides the information needed to successfully service the M3535A/M3536A HeartStart MRx monitor/defibrillator. This manual provides you with information on troubleshooting, repairing, and performance verification and safety testing of the monitor/defibrillator. There is also information on the theory of operation, maintenance procedures, and ordering parts and supplies.

Who Should Use This Manual

The intended users of this manual are technical personnel who have been trained in the safe and proper servicing of the HeartStart MRx. To assist in training, the Service Training video

(M3535-89300 NTSC, M3535-89310 PAL) is available.

Overview

In this chapter, you’ll find general information that you should know before servicing the HeartStart MRx. Detailed information regarding controls, operation, and capabilities of the device can be found in the Instructions for Use that was shipped with the product. The Instructions for Use also provides information on setting up the device and regular maintenance procedures, such as performing operational checks and battery maintenance. We recommend you review the Instructions for Use before servicing this device. This Service Manual assumes you are familiar with the controls and with basic operations.

This chapter is organized into the following sections:

Topic	Page
Features and Capabilities	2
Tour of the Device	3
General Service Information	8
Accessing Service Mode	10
Other Resources	16

1 Introduction

Features and Capabilities

The HeartStart MRx is a lightweight, portable, monitor/defibrillator. It provides four modes of operation, Monitor, Manual Defib, AED, and Pacer (optional).

In Monitor Mode you can monitor up to four ECG waveforms, acquired through a 3-, 5-, or 10-lead ECG set or multifunction electrode pads. Optional monitoring of pulse oximetry (SpO2 ), noninvasive blood pressure (NBP), and carbon dioxide (EtCO2) are also available. Measurements from these parameters are presented on the display and alarms are available to alert you to changes in the patient’s condition.

Monitor Mode also provides an optional 12-Lead ECG function, enabling you to preview, acquire, store, and print 12-lead ECG reports, with or without analysis/interpretation.

Manual Defib Mode offers simple, 3-step defibrillation. You analyze the patient’s ECG and, if appropriate: 1) select an energy setting, 2) charge, and 3) deliver the shock. Defibrillation may be performed using paddles or multifunction electrode pads. Manual Defib Mode also allows you to perform synchronized cardioversion and internal defibrillation.

In AED Mode, the HeartStart MRx analyzes the patient’s ECG and determines whether a shock is advised. Voice prompts guide you through the 3-step defibrillation process, providing easy-to-follow instructions and patient information. Voice prompts are reinforced by messages that appear on the display.

Both Manual Defib and AED Mode incorporate the Philips’ low energy SMART Biphasic waveform for defibrillation.

Optional Pacer Mode offers noninvasive transcutaneous pacing therapy. Pace pulses are delivered through multifunction electrode pads, using a monophasic waveform.

The HeartStart MRx is powered by rechargeable lithium ion batteries. Available battery power is easily determined by viewing the convenient battery power indicators located on the device display or by checking the indicators on the battery itself. Additionally, an external AC or DC power supply may be applied as a secondary power source and for continual battery charging.

The HeartStart MRx performs Automated Tests on a regular basis. The status of the device’s critical functions are reported to the Ready For Use (RFU) indicator. Prominently displayed, the RFU indicator communicates the status of your device, letting you know if it is operating correctly, needs attention, or is unable to deliver therapy. In addition, performing the specified Operational Check ensures that the HeartStart MRx is functioning properly.

The HeartStart MRx automatically stores critical event data in its internal memory, such as Event Summaries and 12-Lead Reports. The HeartStart MRx also enables you to copy data and event information on an optional external data card for downloading to Philips’ data management solution, HeartStart Event Review Pro.

The HeartStart MRx is highly configurable to better meet the needs of diverse users. Be sure to familiarize yourself with the device’s configuration before using the HeartStart MRx.

Tour of the Device

1 Introduction

Tour of the Device

This section gives an overview of the outside of the device.

Figure 1 Front view

External Power Indicator	Synchronized Cardioversion
	(Sync) button

Ready For Use (RFU)

Indicator

	Mark Event	Therapy Knob
	button	Therapy Knob
	button

Lead Select button

		c
	n
y
S

				ib
				f
			D	e
	a	l	D	50
u		l
u
n
a			30
M			30
M
			20

		Adult
	120	Dose
100	120	150
70		170

200

Select 1 Energy

CHARGE button

SHOCK button

	15
Display	1-10
Display	Pacer	On Off On
	Monitor	AED

Alarm Pause button Event Summary Soft keys (4 total) Navigation buttons button

Charge

Printer

Shock

Printer door

Printer door latch

Print button

Speaker

Menu Select button

1 Introduction

Tour of the Device

Right Side

Figure 2 Right side view

Data Card

Therapy port (behind connector)

Therapy connector

Tour of the Device

1 Introduction

Left Side

Figure 3 Left side view

CO2 Inlet Port

CO2 Outlet Port

					1
CO2
					2
					™
					m
				e	a
			t r	e
		s	t r
	ro	s
ic	ro				ECG
ic					ECG
M

ECG Out (Sync)	ECG
Jack

NBP Port

ECG Port

SpO2 Port

RJ11 Telephone

Jack

1 Introduction

Tour of the Device

Rear

Figure 4 Rear view

Battery/AC

Compartment B

LAN Connection

Bed Rail Hook Mount

Battery

Compartment A

Battery

RS 232 Serial Port

AC Power Module

DC Power Input

NOTE The LAN port is for factory use only.

Tour of the Device

1 Introduction

Top

Figure 5 Top view.

Top access panel

PCMCIA card slots

Internal memory card slot

1 Introduction

General Service Information

Keep the following points in mind when servicing this product.

Installation

The HeartStart MRx does not require installation. The Instructions for Use describes the setup required before placing the device into service, as well as configuration options. All setup activities are designed to be performed by personnel trained in the proper operation of the product. To obtain a copy of the Instructions for Use and other MRx documentation go to: www.medical.philips.com/goto/productdocumentation.

Display Menus

To display a menu, press the Menu Select button. Then use the up or down Navigation buttons to scroll through the available choices until the desired selection is highlighted. To activate the selection, press the Menu Select button. Press Exit to close the menu without activating a selection.

Passwords

In order to access different modes within the monitor/defibrillator, a password is required. The passwords are listed below:

•Service Mode: 27689

•Configuration Mode: 387466

Upgrades

Upgrades are available to add specific functionality to the device after purchase. These upgrades are:

•M3530A SpO2

•M3531A NBP

•M3532A CO2

•M3533A Pacing

•M3534A 12-Lead

Option B02 - 12-lead acquisition Option B03 - 12-lead transmission Option B04 - 75 mm printer

•M4760A Handle and Cap Plate

•M5527A External paddles

•M4765A Hardware Upgrade Option B01 - Version B hardware that supports 12-lead transmission Consult your sales representative, dealer, or distributor for the latest details.

Preventive Maintenance

Preventive maintenance and periodic operational checks are intended to be performed by the user. Both topics are covered in the Maintenance chapter of the Instructions for Use.

The Maintenance chapter of this manual provides procedures for the CO2 and NBP calibration procedures, which are intended to be performed by qualified service personnel.

General Service Information

1 Introduction

Repair Philosophy

Monitor/Defibrillator

The repair philosophy of the HeartStart MRx is subassembly replacement. Examples of subassemblies are the printer, the Processor Printed Circuit Assembly (PCA), Therapy PCA, and selected connectors and other items. Repairs that involve replacing components on a PCA are not supported.

CAUTION Individual component replacement should not be attempted. Component level repair is inadvisable due to the extensive use of surface mount technology and the high parts-density on the circuit boards. Unauthorized component replacement can impair performance of the HeartStart MRx.

WARNING Remove all power sources (AC, battery, DC) before opening the device. Failure to do so may allow the device to charge without warning and could result in serious injury or death.

Batteries

The M3538A Lithium Ion battery is rechargeable. The battery periodically requires a calibration. At the end of the battery’s useful life, it should be discarded and replaced. Refer to the Instructions for Use for additional information.

For information on ordering replacements, see "Ordering Supplies and Accessories" on page 212.

WARNING Never crush, penetrate or attempt to open lithium ion batteries. Never incinerate lithium ion batteries. High case temperatures resulting from abuse of the battery could cause physical injury. The electrolyte is highly flammable. Rupture of the battery pack may cause venting and flame.

CAUTION Due to their high energy density, lithium ion batteries can deliver significant power. Use care when working with or testing lithium ion batteries. Do not short circuit the terminals.

1 Introduction

Accessing Service Mode

CAUTION Be sure that the monitor/defibrillator is not connected to a patient when performing any function in Service Mode.

NOTE Make sure that you insert a battery charged to at least 20% into the device or connect external power when you are performing functions in Service Mode.

To access Service Mode:

1.Turn the Therapy Knob to Monitor.

2.Press the Menu Select button to display the Main menu.

3.Select Other.

4.From the Other menu select Service.

The message “Leaving Normal Operating Mode. Patient Monitoring is Off. To return to Normal Operating Mode, press the Exit Softkey.” appears.

5.Press the Menu Select button to acknowledge the message.

You are prompted to enter a password.

6.Enter the password (27689) by scrolling through the list until the desired number is highlighted.

7.Press the Menu Select button to activate each selection.

8.Select Done when you have entered all of the numbers.

Accessing Service Mode

1 Introduction

The Service Mode Main menu is displayed, as shown in Figure 6.

Figure 6 Service Mode Main Menu

02 Mar 2003 10:52

Service . MAIN

	Service
	Operational Check
	Status Log

	NBP

	CO2
	Controls
	Printer

Exit	Device Info
Service	Software Upgrade

Navigating in Service Mode

Service Mode uses the same navigation controls as normal operating mode:

•To select a menu item, use the Navigation buttons to highlight your choice, then select that choice by pressing the Menu Select button.

•To exit Service Mode and return to clinical mode, press the [Exit Service] soft key.

•To return to the Service Mode Main menu from any service screen press the [Main Service] soft key.

NOTE The device’s default configuration settings are restored when you return to clinical mode after exiting Service Mode.

1 Introduction

Accessing Service Mode

Service Mode Functions

You can perform a variety of service related activities from Service Mode, as follows:

•Run an Operational Check - See “Operational Check” on page 39.

•View, print and clear the Status log - See “Status Log Errors” on page 55.

•Perform maintenance on the NBP module - See “Checking the NBP Module” on page 19.

•Perform maintenance on the CO2 module - See “Checking the CO2 Module” on page 23.

•Run the Controls test - See “Controls Test” on page 193.

•Run the Printer test - See “Printer Test” on page 194.

•View information about the device, such as model number, serial number, options enabled on the device, and the device’s language - See “Device Info” on page 13. You also use the Device Info menu to enter the serial number and to enable options on the device after a Processor PCA repair. See “Entering the Serial Number and Enabling Options” on page 128 for more information.

NOTE You can print detailed information on board and module levels through the Print Device Info option, available in normal operating mode. See “Printing the Device Information” on page 16.

•Install software and change the device’s language using the Software Support Tool - See “Software Support Tool” on page 13.

Accessing Service Mode

1 Introduction

Device Info

To view information about the device:

1. From the Service Mode Main menu, select Device Info.

Figure 7 Device Info Screen

	02 Mar 2003 10:52
Service . DEVICE INFO
Model Number:	M3536A
Serial Number:	US00100320
Options:	SpO2, CO2, NBP
Language:	American English

Main	MENU
Service

Software Support Tool

To install software onto the device or to change the device’s language:

1.Be sure an AC power module or battery charged to at least 20% is in place.

2.Insert the Software Support Tool into the data card slot.

3.From the Service Mode Main menu, select Software Upgrade.

4.Select the appropriate product version.

5.Press the [Upgrade] soft key.

The software is installed on the device. This process takes a few minutes. While the software is being updated, progress messages are displayed and the [Main Service] soft key is disabled.

1 Introduction

Accessing Service Mode

NOTE Be careful not to interrupt the software installation process by removing the power source or turning the device off.

Figure 8 Software Upgrade Screen

02 Mar 2003 10:52

Service . SOFTWARE UPGRADE

HeartStart MRx Version B.04.00 Upgrade: American English

Main	Prev	Next	Upgrade
Service	Item	Item	Upgrade

6.When the software or language installation process is complete, turn the device off and on.

7.Run an Operational Check.

8.Review the Operational Check results to ensure all tests have passed.

See “Operational Check” on page 39.

9.Print the Device Info to ensure the product version or language is correct.

See “Printing the Device Information” on page 16.

Accessing Service Mode

1 Introduction

10.Affix the appropriate label found in the Software Support Tool kit to battery compartment B, as show in Figure 9. Additionally, make sure that the customer has the Instructions for Use (found on the User Documentation CD) that matches the product version.

Figure 9 Rear case labels

Primary label
Product Version
label	B2.04.00
label

NOTE The label that you apply to the device is in the format Xx.xx. This is functionally equivalent to the X.xx Product Version that appears on the Device Info and Software Upgrade screens and the printed device information report. For example, product version B2.04 is functionally equivalent to B.04.

1 Introduction

Other Resources

Printing the Device Information

You can print detailed information on product versions, and board and module levels from the Print Device Info menu option. This option is available from the Other menu in clinical modes.

To print the device information:

1.Be sure a battery charged to at least 20% is in place, or that external power is connected.

2.Turn the Therapy Knob to Monitor.

3.Press the Menu Select button to access the Main menu.

4.From the Main menu, select Other.

5.From the Other menu, select Print Device Info.

Detailed information about the device is printed.

Other Resources

For additional information on the HeartStart MRx, refer to the following Learning Products:

•HeartStart MRx Instructions for Use (M3535-91900)

•HeartStart MRx Service Training Video (M3535-89300 NTSC, M3535-89310 PAL)

•HeartStart MRx Lithium Ion Battery Characteristics and Care Application Note (M3535-91930)

Other documentation can be found on the Philips website at:

www.medical.philips.com/goto/productdocumentation.

Maintenance

This chapter describes how to perform routine maintenance on the HeartStart MRx monitor/defibrillator.

Overview

Most routine maintenance is performed by the user. This includes:

•Performing operational checks

•Replacing paper

•Charging and maintaining the lithium ion battery

•Cleaning

Refer to the Instructions for Use for detailed information on these maintenance procedures. Service personnel are responsible for the following routine maintenance:

•Yearly calibration (or every 10,000 cycles) of the Noninvasive Blood Pressure (NBP) module

•Yearly calibration (or every 4000 hours) of the End-tidal Carbon Dioxide (EtCO2) module This chapter provides the following information:

Topic	Page
Maintenance Tools and Equipment	18
Checking the NBP Module	19
Checking the CO2 Module	23

2 Maintenance

Maintenance Tools and Equipment

You will need the following equipment to perform the yearly calibration procedures:

•Password to access Service Mode (27689)

•NBP

–manometer

–expansion chamber (volume 250 ml +/- 10%) or an NBP cuff can be used

NOTE If you are using an NBP cuff, make sure it is wrapped around a solid object.

•CO2

–calibration gases and regulator cal 1 gas 15210-64010 (5% CO2)

cal 2 gas 15210-64020 (10% CO2) cal gas flow regulator M2267A

–electronic flowmeter, M1026-60144

–Gas calibration equipment cal tube 13907A FilterLine set, M1920A

–local barometric pressure rating or reading received from a reliable local source (airport, regional weather station, or hospital weather station) which is located at the same altitude as the hospital or EMS service.

–calculator

NOTE In addition to the items listed above, the calibration procedures require tubing and connectors typically found in a biomedical engineering shop.

Checking the NBP Module

2 Maintenance

Checking the NBP Module

NBP

These instructions describe how to test the NBP measurement function. A complete test consists of the following activities, which are described in detail in this chapter.

NBP Check	Page
Setup	19
Check the status displays	20
Test the accuracy	21
Test for leaks	21
Test the linearity	22
Calibrate the NBP Measurement	22
Run an Operational Check	22

Each of the procedures assumes the monitor/defibrillator, the manometer, and the expansion chamber are still set up as they were at the end of the previous test.

If all results are as described, the device passes that portion of the test. Return to the Service Mode Main menu by pressing the [Main Service] soft key.

If there is any failure, begin troubleshooting and repairing the device as needed. See “Troubleshooting” on page 33.

Setup

1Access the Service Mode Main menu as described in “Accessing Service Mode” on page 10.

2From the Service Mode Main menu, select NBP. The NBP Service screen is displayed.

2 Maintenance

Checking the NBP Module

NOTE You will hear a high-pitch tone when you access the NBP Service screen - this is normal operation.

Figure 10 NBP Service Screen

02 May 2003 10:52

Service . NBP

Cycle Counter:	50,010
Last Calibration:	2 May 2004

Replacement recommended Calibration recommended

Pressure In Cuff: 23 mmHg

Main

Service Calibrate

Check the status displays

1.Check the cycle counter.

Check the number of measurement cycles shown on the screen. If the NBP module has executed more then 50,000 cycles, replacement is recommended. See “NBP Module” on page 160 for instructions on replacing the NBP module.

Following replacement, run the required Performance Verification and Safety Tests (see “Required Testing Levels” on page 180).

2.Check the calibration status.

If the screen indicates that calibration is recommended, perform all of the actions described in this chapter, beginning with "Test the accuracy".

The calibration status is automatically reset at the successful completion of a calibration.

+ 266 hidden pages