Nellcor N-3000 User manual

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SERVICE MANUAL

Nellcor Symphony

N-3000 Patient Monitor SpO2, ECG, and Respiration Capabilities

To contact Nellcor Puritan Bennett’s representative: In the United States, call 1-800-NELLCOR or 510 463-4000;

outside the United States, call your local Nellcor Puritan Bennett representative.

Caution: Federal law (U.S.) restricts this device to sale by or on the order of a physician.

Corporate Headquarters

Regional/Local Offices

Nellcor Puritan Bennett Inc. 4280 Hacienda Drive Pleasanton, California 94588 U.S.A. Tel. 510 463-4000 or 1-800-NELLCOR Fax 510 463-4420

U.S. Service Repair Center

Nellcor Puritan Bennett Inc. 2391 Fenton Street Chula Vista, California 91914 U.S.A. Tel. 619 482-5000

European Office

Nellcor Puritan Bennett Europe BV Hambakenwetering 1 5231 DD ’s-Hertogenbosch The Netherlands Tel. +31.73.6485200

Asia/Pacific Office

Nellcor Puritan Bennett HK Ltd. Room 1602 Evergo House 38 Gloucester Road Wanchai Hong Kong Tel. +852.2529.0363

Nellcor Puritan Bennett UK Ltd. 10, Talisman Business Centre London Road Bicester Oxfordshire OX6 0JX United Kingdom Tel. +44.1869.322700

Nellcor Puritan Bennett Belgium NV/SA Interleuvenlaan 62/8, Zone 2 B-3001 Heverlee Belgium Tel. +32.16.400467

Nellcor Puritan Bennett France 21 rue Albert Calmette 78353 Jouy-en-Josas Cedex France Tel. +33.1.34.63.06.00

Nellcor Puritan Bennett Germany GmbH Black-&-Decker-Strasse 28 65510 Idstein Germany Tel. +49.6126.5930

Nellcor Puritan Bennett Italia Srl Via dei Tulipani, 3 20090 Pieve Emanuele (MI) Italy Tel. +39.2.90786404

To obtain information about a warranty, if any, for this product, contact Nellcor Puritan Bennett Technical Services or your local Nellcor Puritan Bennett representative.

Purchase of this instrument confers no express or implied license under any Nellcor Puritan Bennett patent to use the instrument with any sensor that is not manufactured or licensed by Nellcor Puritan Bennett.

Nellcor Puritan Bennett, Durasensor, Nellcor Symphony, Oxisensor II, and the Nellcor Puritan Bennett knob configuration are trademarks of Nellcor Puritan Bennett Incorporated.

Covered by one or more of the following U.S. Patents and foreign equivalents: 4,621,643; 4,653,498; 4,700,708; 4,770,179; 4,869,254; 5,078,136; 5,351,685; and 5,368,026.

TABLE OF CONTENTS

List of Figures List of Tables

Section 1: Introduction........................................................................... 1-1

1.1 Manual Overview ..................................................................... 1-1

1.2 N-3000 Patient Monitor Description .......................................... 1-1

1.3 Related Documents.................................................................. 1-2

Section 2: Routine Maintenance............................................................ 2-1

2.1 Cleaning................................................................................... 2-1

2.2 Periodic Safety and Functional Checks..................................... 2-1

2.3 Batteries................................................................................... 2-1

Section 3: Performance Verification...................................................... 3-1

3.1 Introduction .............................................................................. 3-1

3.2 Equipment Needed................................................................... 3-1

3.3 Performance Tests................................................................... 3-2

3.4 Safety Tests............................................................................. 3-19

Section 4: Configuration Mode, Service Mode, and Alarm

Active Function....................................................................................... 4-1

4.1 Introduction .............................................................................. 4-1

4.2 Configuration Mode.................................................................. 4-1

3.3.1 Battery Charge........................................................... 3-2

3.3.2 Battery Performance Test .......................................... 3-2

3.3.3 Power-up Performance............................................... 3-3

3.3.3.1 Power-On Self-Test.................................................... 3-3

3.3.3.2 Adult Power-On Defaults and Alarm Limit Ranges...... 3-4

3.3.3.3 Neonate Power-On Defaults and Alarm Limit Ranges 3-6

3.3.4 Hardware and Software Tests..................................... 3-7

3.3.4.1 Operation with a Pulse Oximeter Tester..................... 3-7

3.3.4.2 Operation with an ECG Simulator............................... 3-11

3.3.4.3 Operation with a Respiration Simulator ...................... 3-13

3.3.4.4 General Operation...................................................... 3-13

3.3.4.5 ECG Cable Test......................................................... 3-19

3.4.1 Ground Integrity ......................................................... 3-19

3.4.2 Electrical Leakage...................................................... 3-19

3.4.2.1 Chassis Source Current.............................................. 3-20

3.4.2.2 Patient Source Current............................................... 3-21

3.4.2.3 Patient Sink Current................................................... 3-22

4.2.1 Adult/Neonatal Mode Default...................................... 4-2

4.2.2 Default SpO2 Upper Alarm Limit ................................ 4-2

4.2.3 Default SpO2 Lower Alarm Limit................................. 4-3

4.2.4 Default Heart/Pulse Rate Upper Alarm Limit .............. 4-3

4.2.5 Default Heart/Pulse Rate Lower Alarm Limit............... 4-3

4.2.6 Default Respiration Rate Upper Alarm Limit............... 4-4

4.2.7 Default Respiration Rate Lower Alarm Limit............... 4-4

4.2.8 Default Alarm Volume................................................ 4-4

4.2.9 Default Alarm Silence Duration .................................. 4-4

4.2.10 Configuration Menu.................................................... 4-5

4.2.10.1 Pulse Tone Volume................................................... 4-6

4.2.10.2 UIF Software Version Report..................................... 4-6

4.2.10.3 SpO2 Software Version Report .................................. 4-6

4.2.10.4 Serial Port Baud Rate................................................ 4-6

4.2.10.5 Trend Type................................................................ 4-7

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Table of Contents

4.2.10.6 Reset to Factory Defaults .......................................... 4-7

4.2.10.7 Primary Heart/Pulse Rate Source.............................. 4-7

4.2.10.8 Primary Pulse Tone Source....................................... 4-8

4.2.10.9 ECG Lead Selection.................................................. 4-8

4.2.10.10 ECG Pacer Filter Status .......................................... 4-8

4.2.10.11 ECG Low Frequency Filter Status............................ 4-9

4.2.10.12 ECG Software Version Report ................................. 4-9

4.2.10.13 Respiration Noise Timeout....................................... 4-9

4.2.10.14 Respiration Sensitivity Selection.............................. 4-10

4.3 Service Mode........................................................................... 4-10

4.3.1 Menu Item 1: Software Version Report....................... 4-13

4.3.2 Menu Item 2: Knob and Lamp Test............................. 4-14

4.3.3 Menu Item 3: Button Test........................................... 4-14

4.3.4 Menu Item 4: Speaker Test........................................ 4-15

4.3.5 Menu Item 5: Internal Configuration Code (ICC)

Report........................................................................ 4-15

4.3.6 Menu Item 6: Total Operating Hours Report............... 4-16

4.3.7 Menu Items 7-16: Error Log Record Report................ 4-16

4.3.8 Menu Item 17: Instrument Identification (IID) Report .. 4-16

4.3.9 Menu Item 18: Power Status ...................................... 4-17

4.3.10 Menu Item 19: Persistent Time Sense Report ............ 4-17

4.3.11 Menu Item 20: Reset to Factory Defaults.................... 4-18

4.3.12 Menu Item 21: Initial Cluster Instrument Number

Report........................................................................ 4-18

4.3.13 Menu Item 22: Latching Alarms.................................. 4-18

4.3.14 Menu Item 23: Enable/Disable Alarm Silence

Reminder................................................................... 4-19

4.3.15 Menu Item 25: Dump EEPROM Data ......................... 4-19

4.3.16 Menu Item 28: Enable/Disable Battery Charge

Circuit ........................................................................ 4-20

4.3.17 Menu Item 29: Instrument Compatibility Report.......... 4-20

4.3.18 Menu Item 30: SpO2 RCAL Report............................. 4-20

4.3.19 Menu Item 31: SpO2 IR and Red Offset Report.......... 4-21

4.3.20 Menu Item 32: SpO2 Corrected IR and Red Signals

Report........................................................................ 4-21

4.3.21 Menu Item 33: SpO2 IR LED Drive Test ..................... 4-21

4.3.22 Menu Item 34: SpO2 Red LED Drive Test .................. 4-22

4.3.23 Menu Item 35: SpO2 DM-Gain Test............................ 4-23

4.3.24 Menu Item 36: SpO2 P-Gain Test............................... 4-23

4.3.25 Menu Item 37: Set SpO2 Analog Test Mode............... 4-24

4.3.26 Menu Item 38: SpO2 A/D-Cal Line Test...................... 4-24

4.3.27 Menu Item 39: SpO2 Enable Automatic Operation...... 4-25

4.3.28 Menu Item 40: Set ECG Lead .................................... 4-25

4.3.29 Menu Item 41: Set ECG Pacer Filter .......................... 4-25

4.3.30 Menu Item 42: Set ECG Low Frequency Filter............ 4-26

4.3.31 Menu Item 43: Set ECG Baseline Reset..................... 4-26

4.3.32 Menu Item 44: ECG POST Test Signal ...................... 4-26

4.3.33 Menu Item 45: Check ECG Cable Off Detection......... 4-27

4.3.34 Menu Item 46: Check ECG Lead Off Detection .......... 4-27

4.3.35 Menu Item 47: Display ECG Output Value.................. 4-28

4.3.36 Menu Item 49: ECG Enable Automatic Operation....... 4-28

4.3.37 Menu Item 51: Set Respiration Baseline Reset........... 4-29

4.3.38 Menu Item 53: Display Respiration Output Value........ 4-29

4.3.39 Menu Item 54: Enable/Disable Respiration

Monitoring.................................................................. 4-30

Table of Contents

4.3.40 Menu Item 55: Enable/Disable Breath Pulses............. 4-30

4.3.41 Menu Item 56: Respiration Enable Automatic

Operation................................................................... 4-31

4.3.42 Menu Item 60: Set Serial Port Baud Rate................... 4-31

4.3.43 Menu Item 61: Serial Port Loop Back Test ................. 4-31

4.3.44 Menu Item 62: Serial Port Transmit Test .................... 4-32

4.4 Alarm Active Function.............................................................. 4-32

Section 5: Troubleshooting ................................................................... 5-1

5.1 Introduction .............................................................................. 5-1

5.2 How to Use this Section............................................................ 5-1

5.3 Who Should Perform Repairs................................................... 5-1

5.4 Replacement Level Supported.................................................. 5-1

5.5 Obtaining Replacement Parts................................................... 5-1

5.6 Troubleshooting guide.............................................................. 5-2

5.6.1 Power......................................................................... 5-3

5.6.2 Error Codes................................................................ 5-4

5.6.2.1 User-Correctable Error Codes .................................... 5-4

5.6.2.2 Failure Error Codes.................................................... 5-4

5.6.3 Buttons/Knob.............................................................. 5-7

5.6.4 Display/Alarms........................................................... 5-8

5.6.5 Operational Performance........................................... 5-9

5.6.6 Stacked Operation ..................................................... 5-10

5.6.7 Serial Port.................................................................. 5-12

Section 6: Disassembly Guide............................................................... 6-1

6.1 Introduction .............................................................................. 6-1

6.2 Removing the Battery............................................................... 6-2

6.3 Battery Replacement................................................................ 6-3

6.4 Fuse Replacement ................................................................... 6-4

6.5 Monitor Disassembly ................................................................ 6-4

6.5.1 Communications Board Switch Settings..................... 6-5

6.6 Removing the Alarm Speaker................................................... 6-6

6.7 Removing the SpO2 PCB and SpO2 Controller PCB................. 6-6

6.8 Removing the Communications PCB........................................ 6-7

6.9 Removing the ECG PCB and ECG Controller PCB .................. 6-8

6.10 Removing the UIF PCB and Display PCB................................. 6-8

6.10.1 Installing a Replacement UIF PCB ............................. 6-9

6.11 Control Knob Assembly Replacement....................................... 6-10

6.12 Lithium Battery Replacement.................................................... 6-11

6.13 Reassembly.............................................................................. 6-11

Section 7: Spare Parts............................................................................ 7-1

7.1 Introduction .............................................................................. 7-1

Section 8: Packing for Shipment........................................................... 8-1

8.1 General Instructions ................................................................. 8-1

8.2 Repacking in Original Carton.................................................... 8-1

8.3 Repacking in a Different Carton................................................ 8-2

Section 9: Specifications........................................................................ 9-1

9.1 General.................................................................................... 9-1

9.2 Electrical .................................................................................. 9-1

9.3 Physical Characteristics............................................................ 9-2

9.4 Environmental.......................................................................... 9-2

9.5 Alarms...................................................................................... 9-2

9.6 Factory Default Settings........................................................... 9-2

9.7 Performance............................................................................. 9-3

Table of Contents

Appendix................................................................................................. A-1

A1 Error Types .............................................................................. A-1

A2 User-Correctable Error Codes................................................... A-2

A3 Failure Error Codes .................................................................. A-2

A4 Internally Corrected Error Codes .............................................. A-3

Technical Supplement............................................................................ S-1

S1 Introduction .............................................................................. S-1

S2 Oximetry Overview................................................................... S-1

S2.1 Automatic Calibration................................................. S-1

S2.2 Functional Versus Fractional Saturation..................... S-2

S2.3 Measured Versus Calculated Saturation..................... S-2

S3 Stackbus Interconnect .............................................................. S-2

S4 Circuit Analysis......................................................................... S-3

S4.1 Functional Overview .................................................. S-3

S4.2 Circuit Description...................................................... S-4

S4.2.1 SpO2 Module ............................................................. S-4

S4.2.2 ECG/Respiration Module............................................ S-6

S4.2.3 UIF Module ................................................................ S-9

S4.2.4 SpO2 Controller.......................................................... S-16

S4.2.5 ECG Controller........................................................... S-18

S4.2.6 Communications Submodule...................................... S-19

S4.2.7 Display Board............................................................. S-21

S.5 Schematic Diagrams ................................................................ S-22

LIST OF FIGURES

LIST OF TABLES

Table of Contents

1-1 N-3000 Front Panel ...................................................................... 1-2

3-1 Self-Test Display .......................................................................... 3-3

3-2 Serial Port Interface...................................................................... 3-15

3-3 Serial Port Connector - External Pin Locations ............................. 3-16

3-4 Battery Cover Removal ................................................................ 3-17

3-5 Speaker Test................................................................................ 3-18

3-6 ECG Cable Pin Locations............................................................. 3-19

4-1 Serial Port Pin Locations .............................................................. 4-33

6-1 Battery Replacement.................................................................... 6-2

6-2 Removing the Battery................................................................... 6-3

6-3 N-3000 Fuses............................................................................... 6-4

6-4 N-3000 Corner Screws.................................................................. 6-4

6-5 Opening the N-3000 Monitor......................................................... 6-5

6-6 Handle, Left Side Panel, and Speaker Disassembly...................... 6-6

6-7 Rear Panel and SpO2 Module Disassembly.................................. 6-7

6-8 Communications PCB Removal.................................................... 6-8

6-9 Display PCB and UIF PCB Disassembly....................................... 6-9

6-10 Knob Encoder Disassembly .......................................................... 6-10

6-11 Knob Disassembly........................................................................ 6-10

7-1 N-3000 Expanded View ................................................................ 7-2

8-1 Repacking the N-3000.................................................................. 8-1

S2-1 Oxyhemoglobin Dissociation Curve.............................................. S-2

S4-1 N-3000 Functional Block Diagram ................................................ S-4

S4-2 Timing Diagram............................................................................ S-5

S4-3 Internal/External Stackbus Connections........................................ S-13

S4-4 Communications Sub module Block Diagram............................... S-20

S4-5 Display Board Block Diagram ....................................................... S-21

3-1 Dynamic Operating Ranges........................................................... 3-9

3-2 Serial Port Voltages....................................................................... 3-16

3-3 ECG Cable Resistances................................................................ 3-20

4-1 Configuration Mode Menu ............................................................. 4-2

4-2 Configuration Menu....................................................................... 4-5

4-3 Service Mode Steady State - Main Menu....................................... 4-12

5-1 Problem Categories....................................................................... 5-2

5-2 Power Problems............................................................................ 5-3

5-3 N-3000 Failure Error Codes........................................................... 5-5

5-4 Buttons/Knob Problems................................................................. 5-7

5-5 Display/Alarms Problems .............................................................. 5-8

5-6 Operational Performance Problems............................................... 5-9

5-7 Stack Problems............................................................................. 5-10

5-8 Serial Port Problems ..................................................................... 5-12

A-1 Error Types ................................................................................... A-1

A-2 N-3000 User-Correctable Error Codes........................................... A-2

A-3 N-3000 Failure Error Codes........................................................... A-2

A-4 N-3000 Internally Corrected Error Codes....................................... A-3

S4-1 J13 Inter Stack Connector ............................................................. S-9

S4-2 J8 Connector................................................................................. S-14

S4-3 J12, J22 Inter Module Connector................................................... S-15

S4-4 J5 Display Connector .................................................................... S-16

S4-5 J2 Speaker Connector................................................................... S-16

S4-6 J3 Knob Connector........................................................................ S-16

vii

SECTION 1: INTRODUCTION

1.1 Manual Overview

1.2 N-3000 Patient Monitor Description

1.3 Related Documents

1.1 MANUAL OVERVIEW

This manual contains information for servicing the Nellcor Symphony model N-3000 patient monitor. Only qualified service personnel should service this product. Before servicing the N-3000, read the operator’s manual carefully for a thorough understanding of operation.

1.2 N-3000 PATIENT MONITOR DESCRIPTION

The purpose and function of the Nellcor Symphony N-3000 patient monitor is to noninvasively and continuously monitor functional arterial oxygen saturation, ECG, pulse rate, heart rate, and respiration rate for adult, pediatric, and neonatal patients in all hospital areas and hospital-type facilities. It may be used for hospital transport when powered by its internal battery.

The N-3000 can operate as a standalone monitor or it can be connected to (stacked with) other Nellcor Symphony instruments, such as the N-3100 blood pressure monitor and N-3200 display/printer. When used with the N-3200 display/printer, the instruments can display and print out ECG, respiration, and plethysmographic waveforms and SpO2, pulse rate, heart rate, and respiration rate tabular data.

The physical and operational characteristics of the monitor are described in the operator’s manual and Section 9, Specifications, of this manual.

Figure 1-1 depicts the front panel of the N-3000 and the names of its displays and controls.

1-1

Section 1: Introduction

Figure 1-1: N-3000 Front Panel

1. SpO2% display 11. PRINT button

2. PULSE AMPLITUDE indicator 12. BATTERY IN USE/BATTERY LOW indicator

3. ECG HEART RATE indicator 13. BATTERY CHARGING indicator

4. HEART/PULSE RATE display 14. LINKED indicator*

5. RESPIRATION RATE display 15. RF LOCKED indicator*

6. NEONATAL MODE indicator 16. LOWER ALARM LIMIT button

7. AUDIBLE ALARM OFF indicator 17. UPPER ALARM LIMIT button

8. ON/STANDBY button 18. LEADS OFF indicator

9. POWER ON indicator 19. PULSE SEARCH indicator

10. STACKED indicator 20. PATIENT MOTION indicator

* Not used on this model

1.3 RELATED DOCUMENTS

To perform test and troubleshooting procedures and to understand the principles of operation and circuit analysis sections of this manual, you must know how to operate the monitor. Refer to the N-3000 operator’s manual. To understand the various Nellcor Puritan Bennett sensors and ECG leads that work with the monitor, refer to the individual sensor or leads directions for use.

1-2

SECTION 2: ROUTINE MAINTENANCE

2.1 Cleaning

2.2 Periodic Safety and Functional Checks

2.3 Batteries

2.1 CLEANING Caution: Do not immerse the N-3000 or its accessories in liquid or clean

with caustic or abrasive cleaners. Do not spray or pour any liquid on the monitor or its accessories.

To clean the N-3000, dampen a cloth with a commercial, nonabrasive cleaner and wipe the exterior surfaces lightly. Do not allow any liquids to come in contact with the power connector, fuse holder, or switches. Do not allow any liquids to penetrate connectors or openings in the instrument cover. Wipe sensor and ECG lead extension cables with a damp cloth. For sensors and ECG leads, follow the individual directions for use.

2.2 PERIODIC SAFETY AND FUNCTIONAL CHECKS

The following checks should be performed at least every 2 years by a qualified service technician.

1. Inspect the exterior of the N-3000 for damage.

2.3 BATTERIES

2. Inspect safety labels for legibility. If the labels are not legible, contact

Nellcor Puritan Bennett’s Technical Services Department or your local Nellcor Puritan Bennett representative.

3. Verify that the unit performs properly as described in paragraph 3.3.

4. Perform the electrical safety tests detailed in paragraph 3.4. If the unit fails

these electrical safety tests, do not attempt to repair. Contact Nellcor Puritan Bennett’s Technical Services Department or your local Nellcor Puritan Bennett representative.

5. Inspect the fuses for proper value and rating (F1: 1.0 Amp, 250 Volt, Slo-

Blow and F2: 2.5 Amp, 250 Volt, Slo-Blow) as discussed in paragraph 6.4.

Nellcor Puritan Bennett recommends replacing instrument batteries at least every 2 years. To replace the batteries, refer to Section 6, Disassembly Guide.

If the N-3000 has been stored for more than 30 days, charge the battery as described in paragraph 3.3.1. A fully discharged battery requires 14 hours of charging time for a full charge. A 6-hour charge is required for 1 hour of operating time.

2-1

SECTION 3: PERFORMANCE VERIFICATION

3.1 Introduction

3.2 Equipment Needed

3.3 Performance Tests

3.4 Safety Tests

3.1 INTRODUCTION

This section discusses the tests used to verify performance following repairs or during routine maintenance. All tests can be performed without removing the N3000 cover. All tests except the battery charge and battery performance tests must be performed as the last operation before the monitor is returned to the user.

If the N-3000 fails to perform as specified in any test, repairs must correct the problem before the monitor is returned to the user.

3.2 EQUIPMENT NEEDED

Equipment Description

AC power adapter Use an appropriate Nellcor Symphony

SPS-N1 or PSS-1 power supply. Connector adapter 6-pin, “D” Digital multimeter (DMM) Fluke Model 87 or equivalent

Durasensor

oxygen transducer DS-100A

ECG cable SCE-10 ECG electrodes standard ECG leads SLE series ECG simulator Dynatech Nevada, medSim 300 or

equivalent

Oxisensor® II oxygen transducer D-25

Pulse oximeter tester SRC-2 Respiration simulator Dynatech Nevada, medSim 300 or

equivalent Safety analyzer Must meet current AAMI

specifications Sensor cable SCP-10 Serial interface cable EIA-232 cable (optional) Stopwatch Manual or electronic

3.3 PERFORMANCE TESTS

The battery charge procedure should be performed before monitor repairs whenever possible. It should also be performed before and after performing the battery performance test (paragraph 3.3.2).

3-1

Section 3: Performance Verification

This section is written using Nellcor Puritan Bennett factory-set defaults. If your institution has preconfigured custom defaults, those values will be displayed. Factory defaults can be reset using the configuration mode procedure described in paragraph 4.2.10.6.

3.3.1 Battery Charge

Perform the following procedure to fully charge the battery.

1. Connect the monitor to an AC power source using an external power supply.

2. Verify that the monitor is off and that the BATTERY CHARGING indicator is

lit.

3. Charge the battery for at least 14 hours.

Note: The BATTERY CHARGING indicator is programmed to go out

when the N-3000 has been connected to AC power for approximately 14 hours with no power interruptions. If there are any power interruptions, the 14-hour charging period begins again when power is restored.

4. The only way to check for a full charge is to perform the procedure in

paragraph 3.3.2 “Battery Performance Test.”

3.3.2 Battery Performance Test

The monitor is specified to operate on battery power a minimum of 4 hours. (This time may decrease if the N-3000 is operating in the stacked configuration with an N-3100 or N-3200.) Before performing this test, ensure that the battery is fully charged (paragraph 3.3.1).

1. Connect the Nellcor Puritan Bennett SRC-2 pulse oximeter tester to the

monitor via the SCP-10 sensor cable.

2. Set the SRC-2 switches as follows:

SWITCH POSITION

RATE 38 LIGHT LOW MODULATION LOW RCAL/MODE RCAL 63/LOC

An illuminated BATTERY CHARGING indicator is not necessarily an indication that the battery contains less than a full charge. It is merely used as a timer to indicate that the battery has been continuously charging for less than 14 hours.

3-2

3. Ensure that the monitor is not connected to AC power.

4. With the N-3000 turned off, press the ON/STANDBY button and verify that

the BATTERY IN USE/BATTERY LOW indicator lights after the power-on self-test is completed. Verify that the monitor is responding to the simulator signal and the audible alarm is sounding. Do not silence the alarm during this test.

5. The monitor must operate for at least 4 hours.

6. Verify that the BATTERY IN USE/BATTERY LOW indicator will start to

flash after about 3.5 to 3.75 hours (15-30 minutes before the battery fully discharges).

7. Allow the monitor to operate until it automatically powers down due to the

low battery.

8. If the monitor passes this test, immediately recharge the battery (paragraph

3.3.1, steps 1 - 3).

3.3.3 Power-up Performance

The power-up performance tests (3.3.3.1 through 3.3.3.3) verify the following monitor functions:

Section 3: Performance Verification

• 3.3.3.1 Power-On Self-Test

• 3.3.3.2 Adult Defaults and Alarm Limit Ranges

• 3.3.3.3 Neonate Defaults and Alarm Limit Ranges

3.3.3.1 Power-On Self-Test

1. Connect the monitor to an AC power source and verify that the BATTERY

2. Do not connect any input cables to the monitor.

3. Observe the monitor front panel. With the monitor off, press the

CHARGING indicator is lit.

ON/STANDBY button. The monitor must perform the following sequence.

a. The monitor emits three consecutively higher pitched beeps. b. All indicators light for a few seconds as illustrated in Figure 3-1. Verify

that the SpO2% (left-most display), HEART/PULSE RATE (middle), and RESPIRATION RATE (right) displays all indicate “8.8.8.”.

Figure 3-1: Self-Test Display

c. All displays turn off momentarily.

3-3

Section 3: Performance Verification

d. Digital displays individually light in a scanning test pattern. e. A 1-second beep sounds and all displays again illuminate momentarily. f. All displays turn off except the POWER ON and BATTERY

CHARGING indicators. The SpO2% and HEART/PULSE RATE displays are blank. The RESPIRATION RATE display indicates “0” for about 15 seconds, then is blank. The monitor is in the “normal mode steady state.”

g. Press and hold the NEW PATIENT/NEONATAL button (located on the

rear panel) for 3 seconds until you hear three beeps, indicating that stored patient data is cleared.

3.3.3.2 Adult Power-On Defaults and Alarm Limit Ranges

Note: When observing or changing default limits, a 3-second timeout is in

effect, that is, if no action is taken within 3 seconds, the monitor automatically returns to the normal mode steady state.

1. Ensure that the monitor is on. Press and release the UPPER ALARM LIMIT

button. Verify that the monitor emits a single beep and the SpO2% display indicates an alarm limit of “100” for about 3 seconds. Verify that the other displays indicate a single bar at the top of each window while the “100” is displayed.

At the end of the 3 seconds, the displays are blank (normal mode steady state).

2. Press and release the UPPER ALARM LIMIT button. Begin rotating the

control knob counterclockwise (CCW) within 3 seconds. Verify that the SpO2% display reduces to a minimum of “85.”.

Note: A decimal point in the display indicates that the alarm limits have

changed.

3. Press and release the LOWER ALARM LIMIT button. Verify that the

monitor emits a single beep and the SpO2% display indicates an alarm limit of “85” for 3 seconds. Verify that the other displays indicate a single bar at the bottom of each window.

4. Press and hold the LOWER ALARM LIMIT button. Rotate the control knob

CCW and verify that the SpO2% display reduces to a minimum of “20”. Rotate the control knob clockwise (CW) and verify that the SpO2% display cannot be raised past the upper alarm limit setting of “85”.

5. Press the UPPER ALARM LIMIT button two times rapidly (twice within 3

seconds). Verify that the monitor emits two beeps and the HEART/PULSE RATE display indicates an alarm limit of “170” for about 3 seconds.

3-4

Section 3: Performance Verification

6. From the normal mode steady state, press the UPPER ALARM LIMIT

button two times rapidly. Begin rotating the control knob CCW within 3 seconds. Verify that the HEART/PULSE RATE display reduces to a minimum of “40”.

7. Press the LOWER ALARM LIMIT button two times rapidly. Verify that the

HEART/PULSE RATE display indicates an alarm limit of “40” for 3 seconds.

8. From the normal mode steady state, press the LOWER ALARM LIMIT

button two times rapidly. Rotate the control knob CCW. Verify that the HEART/PULSE RATE display reduces to a minimum of “30”.

9. Press the LOWER ALARM LIMIT button three times rapidly. Verify that the

RESPIRATION RATE display indicates an alarm limit of “4” for 3 seconds.

10. From the normal mode steady state, press the LOWER ALARM LIMIT

button three times rapidly. Begin rotating the control knob CW within 3 seconds. Verify the RESPIRATION RATE display increases to a maximum of “40”.

11. Press the UPPER ALARM LIMIT button three times rapidly. Verify the

RESPIRATION RATE display indicates an alarm limit of “40” for 3 seconds.

12. Press the UPPER ALARM LIMIT button three times rapidly. Begin rotating

the control knob CW within 3 seconds. Verify that the RESPIRATION RATE display increases to a maximum of “150”.

13. Press the ON/STANDBY button to turn the monitor off. Verify that the

monitor emits three decreasing pitch beeps.

14. Press the ON/STANDBY button to turn the N-3000 back on.

15. Press and release the UPPER ALARM LIMIT button. Verify that the SpO2%

display indicates an alarm limit of “100”.

16. Press and release the LOWER ALARM LIMIT button. Verify that the

SpO2% display indicates an alarm limit of “85”.

17. Press the UPPER ALARM LIMIT button two times rapidly. Verify that the

HEART/PULSE RATE display indicates an alarm limit of “170”.

18. Press the LOWER ALARM LIMIT button two times rapidly. Verify that the

HEART/PULSE RATE display indicates an alarm limit of “40”.

19. Press the UPPER ALARM LIMIT button three times rapidly. Verify that the

RESPIRATION RATE display indicates an alarm limit of “40”.

20. Press the LOWER ALARM LIMIT button three times rapidly. Verify that the

RESPIRATION RATE display indicates an alarm limit of “4”.

21. Press the ON/STANDBY button to turn the monitor off.

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Section 3: Performance Verification

3.3.3.3 Neonate Power-On Defaults and Alarm Limit Ranges

Note: When observing or changing default limits, a 3-second timeout is in

effect, that is, if no action is taken within 3 seconds, the monitor automatically returns to the normal mode steady state.

1. Turn the monitor on.

2. Press the NEW PATIENT/NEONATAL button on the rear panel twice within

2 seconds. Verify that there is an audible beep each time the button is pressed.

3. Verify that the NEONATAL MODE indicator on the front panel is lit.

4. Press and release the UPPER ALARM LIMIT button. Verify that the SpO2%

display indicates an alarm limit of “95” for 3 seconds. Verify that the other displays indicate a single bar at the top of each window while the “95” is displayed.

5. Press and release the UPPER ALARM LIMIT button. Begin rotating the

control knob CCW within 3 seconds. Verify that the SpO2% display reduces to a minimum of “80”.

6. Press and release the LOWER ALARM LIMIT button. Verify that the SpO2%

display indicates an alarm limit of “80”. Verify that the other displays indicate a single bar at the bottom of each window.

7. From the normal mode steady state, press and release the LOWER ALARM

LIMIT button. Rotate the control knob CCW. Verify that the SpO2% display reduces to a minimum of “20”.

8. Press the UPPER ALARM LIMIT button two times rapidly (twice within 3

seconds). Verify that the HEART/PULSE RATE display indicates an alarm limit of “190”.

9. Press the LOWER ALARM LIMIT button twice rapidly. Verify that the

HEART/PULSE RATE display indicates an alarm limit of “90”.

10. Press the UPPER ALARM LIMIT button three times rapidly. Verify that the

RESPIRATION RATE display indicates an alarm limit of “80”.

11. Press the LOWER ALARM LIMIT button three times rapidly. Verify that the

RESPIRATION RATE display indicates an alarm limit of “20”.

12. Press the ON/STANDBY button to turn the monitor off.

13. Press the ON/STANDBY button to turn the monitor on. The monitor

performs the sequence described in 3.3.3.1. Verify that the “NEO” indicator is not lit.

14. Press and release the UPPER ALARM LIMIT button. Verify that the SpO2%

display indicates an alarm limit of “100”.

3-6

15. Press and release the LOWER ALARM LIMIT button. Verify that the SpO2%

display indicates an alarm limit of “85”.

16. Press the ON/STANDBY button to turn the monitor off.

This completes the power-up performance tests.

3.3.4 Hardware and Software Tests

Hardware and software testing include the following tests.

• 3.3.4.1 Operation with a Pulse Oximeter Tester

• 3.3.4.2 Operation with an ECG Simulator

• 3.3.4.3 Operation with a Respiration Simulator

• 3.3.4.4 General Operation

3.3.4.1 Operation with a Pulse Oximeter Tester

Operation with an SRC-2 pulse oximeter tester includes the following tests.

• 3.3.4.1.1 Alarms and Alarm Silence

• 3.3.4.1.2 Alarm Volume Control

• 3.3.4.1.3 Pulse Tone Volume Control

• 3.3.4.1.4 Dynamic Operating Range

• 3.3.4.1.5 RCAL Determination

• 3.3.4.1.6 LED Drive Test

3.3.4.1.1 Alarms and Alarm Silence

Section 3: Performance Verification

1. Connect the SRC-2 pulse oximeter tester to the sensor input cable and

connect the cable to the monitor. Set the SRC-2 as follows:

SWITCH POSITION

RATE 38 LIGHT LOW MODULATION OFF RCAL/MODE RCAL 63/LOCAL

2. Press the ON/STANDBY button to turn the monitor on. After the normal

power-up sequence, verify that the SpO2%, HEART/PULSE RATE and RESPIRATION RATE displays initially indicate zeroes.

Note: The pulse bar may occasionally indicate a step change as the

monitor is in the pulse search mode.

3. Move the modulation switch on the SRC-2 to LOW.

4. Verify that the following monitor reaction:

a. The pulse bar begins to track the artificial pulse signal from the SRC-2. b. The pulse tone is heard. c. Zeroes are displayed in the SpO2%, HEART/PULSE RATE, and

RESPIRATION RATE displays.

d. After about 10 to 20 seconds, the monitor displays a saturation and

pulse rate as specified by the tester. Verify that the values are within the following tolerances:

Oxygen Saturation Range 79% to 83% Pulse Rate Range 37 to 39 bpm

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Section 3: Performance Verification

e. The audible alarm sounds and both the SpO2% and HEART/PULSE

5. Press and momentarily hold the AUDIBLE ALARM OFF button on the top of

the monitor. Verify that the HEART/PULSE RATE display indicates “60” and the RESPIRATION RATE display indicates “SEC” while the AUDIBLE ALARM OFF button is pressed. The alarm is silenced.

6. Release the AUDIBLE ALARM OFF button. Verify the following:

a. The alarm remains silenced. b. The AUDIBLE ALARM OFF indicator lights. c. The SpO2% and HEART/PULSE RATE displays resume flashing. d. The pulse tone is still audible. e. The audible alarm returns in approximately 60 seconds.

7. Press and hold the AUDIBLE ALARM OFF button. Rotate the control knob

CCW until the HEART/PULSE RATE display indicates “30”. Rotate the control knob CW and verify that the displays indicate 60 SEC, 90 SEC, 120 SEC, and OFF. Release the button when the display indicates “OFF”. Verify that the AUDIBLE ALARM OFF indicator flashes.

RATE displays will flash, indicating both parameters have violated the default alarm limits.

8. Wait approximately 3 minutes. Verify that the alarm does not return. After 3

minutes, the alarm silence reminder beeps three times, and will continue to do so at 3-minute intervals.

3.3.4.1.2 Alarm Volume Control

After completing the procedure in paragraph 3.3.4.1.1:

1. Press and hold the AUDIBLE ALARM OFF button on the top of the monitor.

Verify the following:

a. “OFF” is displayed for approximately 3 seconds. b. After 3 seconds, a steady tone is heard at the default alarm volume

setting, the HEART/PULSE RATE display indicates “VOL”, and the RESPIRATION RATE display indicates the default setting of 5.

2. While continuing to hold the AUDIBLE ALARM OFF button, rotate the

control knob CCW to decrease the alarm volume setting to a minimum value of 1. The alarm tone should decrease but still be audible.

3. Rotate the control knob CW to increase the alarm volume setting to a

maximum value of 10. Verify the volume increases. Rotate the knob CCW until a comfortable audio level is attained.

4. Release the AUDIBLE ALARM OFF button. The tone will stop.

3-8

3.3.4.1.3 Pulse Tone Volume Control

1. Rotate the control knob CW and verify that the beeping pulse tone sound

level increases.

Section 3: Performance Verification

2. Rotate the control knob CCW and verify that the beeping pulse tone

decreases until it is no longer audible. Rotate the knob CW to return the beep volume to a comfortable level.

3.3.4.1.4 Dynamic Operating Range

The following test sequence verifies proper monitor operation over a range of input signals.

1. Connect the SRC-2 to the N-3000 and turn the N-3000 on.

2. Place the SRC-2 in the RCAL 63/LOCAL mode.

3. Set the SRC-2 as indicated in Table 3-1. Verify that the N-3000 readings

are within the indicated tolerances. Allow the monitor several seconds to stabilize the readings.

Note: A “*” indicates values that produce an alarm. Press the AUDIBLE

ALARM OFF button to silence the alarm.

Table 3-1: Dynamic Operating Range

SRC-2 Settings N-3000 Indications

RATE LIGHT MODULATION SpO2 Pulse Rate

38 HIGH2 LOW 79 - 83* 37 - 39* 112 HIGH1 HIGH 79 - 83* 110 - 114 201 LOW LOW 79 - 83* 195 - 207* 201 LOW HIGH 79 - 83* 195 - 207*

4. Turn the monitor off.

3.3.4.1.5 RCAL Determination

1. Ensure that the N-3000 is turned off and connected to AC power via an

external power supply.

2. Connect the SRC-2 pulse oximeter tester to the sensor input cable and

connect the cable to the monitor. Set the SRC-2 as follows:

SWITCH POSITION

RATE 38 LIGHT LOW MODULATION OFF RCAL/MODE RCAL 63/LOCAL

3. Enter the service mode as follows:

a. While simultaneously holding down the UPPER and LOWER ALARM

LIMIT buttons and the PRINT button, press and release the ON/STANDBY button. Continue to press and hold the UPPER and LOWER ALARM LIMIT and PRINT buttons while the monitor performs the power-on test.

b. When “SEr” begins flashing in the AUXILIARY display, release the

UPPER and LOWER ALARM LIMIT and PRINT buttons.

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Section 3: Performance Verification

c. Press the PRINT button within 15 seconds or the monitor will turn off

4. Select menu item 30 by rotating the knob until “30” appears in the SpO2%

display.

5. Press the UPPER ALARM LIMIT button.

6. Verify the RCAL index number “63” is displayed in the HEART/PULSE

RATE display.

7. Set the SRC-2 RCAL/Mode switch to 64/LOCAL and verify that “64” is

displayed in the HEART/PULSE RATE display.

8. Press the ON/STANDBY button to turn the monitor off.

3.3.4.1.6 LED Drive Test

1. Ensure that the N-3000 is turned off and connected to AC power via an

external power supply.

2. Connect the SRC-2 pulse oximeter tester to the sensor input cable and

connect the cable to the monitor. Set the SRC-2 as follows:

automatically. The number “1” appears in the SpO2% display. You are now in the service mode steady state.

SWITCH POSITION

RATE 38 LIGHT LOW MODULATION OFF RCAL/MODE RCAL 63/LOCAL

3. Enter the service mode as follows:

a. While simultaneously holding down the UPPER and LOWER ALARM

LIMIT buttons and the PRINT button, press and release the ON/STANDBY button. Continue to press and hold the UPPER and LOWER ALARM LIMIT and PRINT buttons while the monitor performs the power-on test.

b. When “SEr” begins flashing in the AUXILIARY display, release the

UPPER and LOWER ALARM LIMIT and PRINT buttons.

c. Press the PRINT button within 15 seconds or the monitor will turn off

automatically. The number “1” appears in the SpO2% display. You are now in the service mode.

4. Select menu item 33 by rotating the knob until “33” appears in the SpO2%

display.

5. Press the UPPER ALARM LIMIT button.

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6. Verify that the SpO2 IR LED drive value “170” is displayed in the

HEART/PULSE RATE display and the IR indicator on the SRC-2 is illuminated.

7. Rotate the control knob to adjust the IR LED drive level indicated in the

HEART/PULSE RATE display to “255”.

Section 3: Performance Verification

8. While watching the IR indicator on the SRC-2, press the UPPER ALARM

LIMIT button and verify that the LED intensity increases.

9. Rotate the knob to adjust the IR LED drive level to “0”.

10. Press the UPPER ALARM LIMIT button. Verify that the IR LED turns off.

11. Rotate the knob to adjust the IR LED drive level to “170”.

12. Press the UPPER ALARM LIMIT button and verify that the LED intensity

increases.

13. Press the LOWER ALARM LIMIT button to return to the service mode

steady state.

14. Select menu item 34 by rotating the knob until “34” appears in the SpO2%

display.

15. Press the UPPER ALARM LIMIT button.

16. Verify that the SpO2 red LED drive value “170” is displayed in the

HEART/PULSE RATE display and that the IR indicator on the SRC-2 is illuminated.

17. Rotate the control knob to adjust the red LED drive level to “255”.

18. Press the UPPER ALARM LIMIT button and verify that the LED intensity

increases.

19. Rotate the knob to adjust the red LED drive level to “0”.

20. Press the UPPER ALARM LIMIT button and verify that the RED indicator turns

off.

21. Rotate the knob to adjust the red LED drive level back to “170”.

22. Press the UPPER ALARM LIMIT button and verify that the RED indicator

intensity increases.

23. Press the LOWER ALARM LIMIT button to return to the service mode

steady state.

24. Press the ON/STANDBY button to turn the N-3000 off.

3.3.4.2 Operation with an ECG Simulator

1. With the monitor off, connect the ECG leads RA, LA, and LL to the

appropriate jacks on the ECG tester.

Nellcor Puritan Bennett ECG leads are color-coded as follows: Right arm (RA) - white

Left arm (LA) - Black Left leg (LL) - Red

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Section 3: Performance Verification

2. Connect the leads to the SCE-10 ECG cable. Connect the SCE-10 to the

ECG input port on the N-3000. Set the ECG tester as follows:

PARAMETER SETTING

HEART RATE 30 bpm AMPLITUDE 1 millivolt LEAD SELECT I SINUS RHYTHM Normal RCAL/MODE Adult

Note: The accuracy of N-3000 ECG measurements is + 5 bpm. In the

3. Ensure that the monitor is connected to an AC power source. Press the

ON/STANDBY button to turn the monitor on. After the normal power-up sequence, verify the following monitor reactions:

a. The heart rate “beep” will be heard. b. After at least five heartbeats, the monitor displays a heart rate of 30 ± 5

c. The audible alarm will sound and the HEART/PULSE RATE display will

procedure below, add the tolerance of the simulator to the acceptable range of readings.

bpm.

flash, indicating the heart rate is below the default lower alarm limit. The heart rate “beep” can still be heard.

4. Press the AUDIBLE ALARM OFF BUTTON. Verify that the alarm is

silenced.

5. Increase the heart rate setting on the ECG simulator to 240 bpm. Verify that

the rate of beeps increases and the HEART/PULSE RATE display value increases.

6. After at least five heartbeats, verify that the monitor displays a heart rate of

240 ± 5 bpm.

7. Verify that the audible alarm sounds and the HEART/PULSE RATE display

flashes, indicating that the heart rate is above the default upper alarm limit.

8. Press AUDIBLE ALARM OFF button to silence the alarm.

9. Decrease the heart rate setting on the ECG simulator to 120 bpm.

10. After at least five heartbeats, verify that the monitor displays a heart rate of

120 ± 5 bpm.

11. Disconnect the LL lead from the ECG simulator. Verify that the LEADS OFF

indicator lights, three dashes are displayed in the HEART/PULSE RATE display, and a low priority audible alarm sounds.

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12. Reconnect the LL lead to the ECG simulator. Verify that the LEADS OFF

indicator is no longer lit and that the alarm is silenced.

Note: Depending on the lead used and pleth configuration, the

HEART/PULSE RATE display may revert to a pulse rate as leads are removed in step 11. If a medium priority alarm results and is silenced, the low priority alarm from leads off will not break through.

13. Repeat steps 11 and 12 for the LA and RA leads.

14. Turn the monitor off.

3.3.4.3 Operation with a Respiration Simulator

1. With the monitor off, connect the Nellcor Puritan Bennett ECG leads to the

appropriate jacks on the respiration simulator.

2. Connect the leads to the SCE-10 ECG cable. Connect the SCE-10 to the

ECG input port on the N-3000.

Note: The accuracy of N-3000 ECG measurements is + 3 breaths per

minute. In the procedure below, add the tolerance of the simulator to the acceptable range of readings.

Section 3: Performance Verification

3. Set the simulator for a respiration rate of 100 breaths per minute.

4. Ensure that the monitor is connected to an AC power source. Press the

5. Press the AUDIBLE ALARM OFF BUTTON. Verify that the alarm is

6. Decrease the respiration rate setting on the respiration simulator to 20

7. After at least 5 breaths, verify that the monitor displays a respiration rate of

8. Power down the monitor and disconnect it from the simulator.

3.3.4.4 General Operation

ON/STANDBY button to turn the monitor on. After the normal power-up sequence, verify the following monitor reactions:

a. After about 20-25 seconds, the monitor displays a respiration rate of

100 ± 3 breaths per minute.

b. The audible alarm will sound and the RESPIRATION RATE display will

flash, indicating the respiration rate is above the default upper alarm limit.

silenced.

breaths per minute.

20 ± 3 breaths per minute.

The following tests are an overall performance check of the system:

• 3.3.4.4.1 LED Excitation Test

• 3.3.4.4.2 Operation with a Live Subject

• 3.3.4.4.3 Serial Interface Test

• 3.3.4.4.4 Piezo Speaker Test

• 3.3.4.4.5 Persistent Time Clock Test

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Section 3: Performance Verification

• 3.3.4.4.6 ECG Cable Test

3.3.4.4.1 LED Excitation Test

This procedure uses normal system components to test circuit operation. A Nellcor Puritan Bennett™ Oxisensor II® oxygen transducer, model D-25, is used to examine LED intensity control. The red LED is used to verify intensity modulation caused by the LED intensity control circuit.

1. Connect the monitor to an AC power source through the SPS-N1 or PSS-1

power supply.

2. Connect an SCP-10 sensor input cable to the monitor.

3. Connect a D-25 sensor to the sensor input cable.

4. Press the ON/STANDBY button to turn the monitor on.

5. Leave the sensor open with the LEDs and photodetector visible.

6. After the monitor completes its normal power-up sequence, verify that the

sensor LED is brightly lit.

7. Slowly move the sensor LED in proximity to the photodetector element of

the sensor. Verify, as the LED approaches the optical sensor, that the LED intensity decreases.

8. Open the sensor and notice that the LED intensity increases.

9. Repeat step 7 and the intensity will again decrease. This variation is an

indication that the microprocessor is in proper control of LED intensity.

10. Turn the N-3000 off.

3.3.4.4.2 Operation with a Live Subject

Patient monitoring involves connecting the monitor to a live subject for a qualitative test.

1. Ensure that the monitor is connected to an AC power source through the

SPS-N1 or PSS-1 power supply.

2. Connect an SCP-10 sensor input cable to the monitor.

3. Connect a Nellcor Puritan Bennett™ Durasensor® oxygen transducer,

model DS-100A, to the sensor input cable.

4. Clip the DS-100A to the subject as recommended in the sensor directions

for use.

5. Connect ECG electrodes to the patient.

6. Connect an SCE-10 ECG cable to the N-3000. Connect ECG leads to the

cable.

3-14

7. Connect the ECG leads to the electrodes on the patient according to the

leads directions for use.

Section 3: Performance Verification

8. Press the ON/STANDBY button to turn the monitor on and verify that the

monitor is operating.

9. The monitor should stabilize on the subject’s physiological signal in about

15 to 30 seconds. Verify that the saturation and heart and respiration rates are reasonable for the subject.

3.3.4.4.3 Serial Interface Test

The communications submodule of the N-3000, using an asynchronous EIA-232 communications format, allows communications between the N-3000 and a PC via the 6-pin connector on the rear panel of the N-3000, as illustrated in Figure 3-2. An SAK-232 cable and detailed directions for use are available by contacting your local Nellcor Puritan Bennett representative.

Figure 3-2: Serial Port Interface

The two configurable options of serial data interface are RS-232 and EIA-422. The N-3000 is shipped with the RS-232 setting. To change the settings, refer to paragraph 6.5.1.

Perform the following procedure to test the serial port voltages. The test is qualitative and will only verify that the serial interface port is powered correctly.

1. Connect the monitor to an AC power source through the SPS-N1 or PSS-1

power supply and turn the monitor on.

2. Connect a 6-pin miniature connector adapter to the serial interface port.

3. Set up the DMM with the function set to “VDC” at a range of 10 volts.

4. Connect the DMM negative lead to connector pin 4 (GND).

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Section 3: Performance Verification

5. Connect the DMM positive lead to the following pins and verify the voltage

values listed in Table 3-2. If the voltages are not as indicated, follow the procedures in paragraph 5.6.7.

Figure 3-3: Serial Port Connector - External Pin Locations

Table 3-2: Serial Port Voltages

Pin Line Voltage

1 DTR 7.5 ± 2.5 2 DSR 0.0 ± 0.4 3 TXD -7.5 ± 2.5 4 GND 0.0 ± 0.4 5 RXD 0.0 ± 0.4 6 Alarm Active 0.0 ± 0.4 or

3.3 ± 0.4

3.3.4.4.4 Piezo Speaker Test

The following test verifies that the Piezo power-loss alarm speaker sounds when the N-3000 loses power.

WARNING: Before attempting to open or disassemble the N-3000, disconnect the power cord from the N-3000.

Caution: Observe ESD (electrostatic discharge) precautions when working within the monitor.

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Section 3: Performance Verification

1. Ensure that the N-3000 is turned off.

2. Disconnect the monitor from the external power supply.

3. Set the N-3000 upside down facing you, as shown in Figure 3-4.

Figure 3-4: Battery Cover Removal

4. Using a small, Phillips-head screwdriver, loosen the two battery cover

retaining fasteners securing the battery compartment cover.

5. Gently squeeze the battery cover sides in the middle as you swing the

cover open (it is hinged on the right with three tabs that extend into slots on the chassis).

3-17

Section 3: Performance Verification

6. Lift the battery out of the compartment, as shown in Figure 3-5. It may be

necessary to use the edge of a flat tip screwdriver to gently pry the battery loose.

Figure 3-5: Speaker Test

7. Turn the monitor on by pressing the ON/STANDBY button.

8. When the power-on self-test is complete, disconnect the power connector

from the battery. Verify that a shrill, beeping alarm is emitted from the speaker.

9. Reconnect the power connector to the battery. Verify that the alarm is

silenced and the monitor powers back on.

10. Disconnect the power connector from the battery a second time. Verify that

the Piezo alarm sounds.

11. Press the AUDIBLE ALARM OFF button and verify that the alarm is

silenced.

12. Reconnect the power connector to the battery. Verify that the alarm remains

silent and the monitor powers back on.

13. Turn the monitor off by pressing the ON/STANDBY button.

14. Replace the battery in the battery bracket and reconnect the battery cover.

3-18

Section 3: Performance Verification

3.3.4.4.5 Persistent Time Clock Test

This procedure allows you to check the operation of the persistent time clock.

1. Enter the service mode as follows:

a. While holding down the UPPER and LOWER ALARM LIMIT buttons

and the PRINT button, press and release the ON/STANDBY button. Continue to hold the UPPER and LOWER ALARM LIMIT and PRINT buttons while the monitor performs the power-on test.

b. When “SEr” begins flashing in the AUXILIARY display, release the

UPPER and LOWER ALARM LIMIT and PRINT buttons.

c. Press the PRINT button within 15 seconds or the monitor will turn off

automatically. The number “1” appears in the SpO2% display. You are now in the service mode steady state.

2. Select menu item 19 by rotating the control knob.

3. Press the UPPER ALARM LIMIT button. The persistent time in seconds is

displayed in the SpO2% and HEART/PULSE RATE displays. For example, “001 688” indicates that the monitor has been powered on for 1,688 seconds = 28 minutes, 8 seconds. Verify that the right-most digit is counting seconds.

3.3.4.5 ECG Cable Test

If the display reads “999 999”, this indicates that persistent time is greater than or equal to 999,999 seconds. If dashes are displayed, the contents of the memory of the persistent time circuit are lost. This can occur when the backup lithium battery has been replaced.

4. Using a timepiece, track the clock to verify proper operation.

5. Press the LOWER ALARM LIMIT button to return to the service mode

steady state.

6. Turn the monitor off by pressing the ON/STANDBY button.

The following test should be completed after defibrillation has been performed on a patient attached to ECG leads and a Nellcor Puritan Bennett SCE-10 ECG cable. It does not need to be performed as a component of an N-3000 performance verification test.

Perform the following procedure to test the ECG cable.

1. Disconnect the SCE-10 ECG cable from the N-3000 and the ECG leads.

Pin locations for both ends of the ECG cable are identified in Figure 3-6.

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Section 3: Performance Verification

2. Measure the resistances between the pins as indicated in Table 3-3.

3. If the resistances are not as indicated, replace the cable.

Figure 3-6: ECG Cable Pin Locations

Table 3-3: ECG Cable Resistances

Pin To Pin Resistance

2 A 900 - 1100 ohms 3 B 900 - 1100 ohms 8 C 900 - 1100 ohms 5 D, E, F 0 - 5 ohms 8 5 open 2 5 open 3 5 open A D open B E open C F open

3.4 SAFETY TESTS

N-3000 safety tests consist of:

• Ground Integrity

• Electrical Leakage

3.4.1 Ground Integrity

This test verifies the integrity of the power cord ground wire from the AC plug and connection with the external power supply chassis ground.

1. Configure the electrical safety analyzer as follows:

2. Connect the monitor’s AC plug to the analyzer as recommended by the

3. Connect the analyzer “resistance” input lead to the grounding lug on the

3.4.2 Electrical Leakage

Function: Ground resistance test Range: Milliohms

analyzer operating instructions.

rear panel of the external power supply. Verify that the analyzer indicates 150 milliohms or less.

The following tests verify the electrical leakage of the monitor.

• Chassis Source Current

• Patient Source Current

• Patient Sink Current

3.4.2.1 Chassis Source Current

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Section 3: Performance Verification

This test is in compliance with IEC 601.1 and AAMI Standard ES1, paragraph

3.3.1, Chassis Source Current, between the power ground and (part b), exposed conductive hardware.

1. Configure the electrical safety analyzer as follows:

Function: Leakage Range: Microamps

2. Connect the monitor AC plug to the electrical safety analyzer as

recommended by the analyzer operating instructions.

3. Connect the electrical safety analyzer “leakage” input lead to the monitor’s

external power supply grounding lug. The analyzer leakage indication must not exceed 100 microamps at

100–120 VAC or 500 microamps at 220–240 VAC for the following AC power configurations while the monitor is turned on and while turned off.

3.4.2.2 Patient Source Current

This test is in compliance with AAMI Standard ES1, paragraph 3.3.2. Patient Source Current is measured between any individual patient connection and power (earth) ground.

1. Configure the electrical safety analyzer as follows:

Function: Leakage Range: Microamps

2. Connect the monitor AC plug to the electrical safety analyzer as

recommended by the analyzer operating instructions for patient source current.

3. Connect the electrical safety analyzer leakage input lead to the monitor’s

sensor input connector.

AC LINE POLARITY

POWER LINE GROUND CABLE

Normal Normal Reverse Normal Reverse Open Normal Open

The analyzer leakage indication must not exceed 10 microamps for all of the following AC power configurations with the monitor on.

AC LINE POLARITY

POWER LINE GROUND CABLE

Normal Normal Reverse Normal Reverse Open

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Section 3: Performance Verification

3.4.2.3 Patient Sink Current

This test is in compliance with AAMI Standard ES1, paragraph 4.4. Patient sink current is measured in a patient connection if a source of 240 volts, 50 Hz (or 120 volts, 60 Hz) with respect to power (earth) ground, is connected to that patient connection.

1. Configure the electrical safety analyzer as follows:

Function: Leakage Range: µA

2. Connect the monitor AC plug to the electrical safety analyzer as

recommended by the operating instructions for patient sink current.

3. Connect the electrical safety analyzer leakage input lead to the monitor’s

sensor input. The analyzer leakage indication must not exceed 50 microamps for

240 volts (10 microamps for 120 volts) for the following AC power configurations with the monitor on.

Normal Open

AC LINE POLARITY

POWER LINE GROUND CABLE

Normal Normal Normal Open

3-22

SECTION 4: CONFIGURATION MODE, SERVICE MODE, AND ALARM ACTIVE FUNCTION

4.1 Introduction

4.2 Configuration Mode

4.3 Service Mode

4.4 Alarm Active Function

4.1 INTRODUCTION

This section discusses use of the configuration mode to reconfigure power-on default values, the service mode to identify and correct monitor difficulties, and the alarm active function.

4.2 CONFIGURATION MODE

The following paragraphs describe how to enter the N-3000 configuration mode and change factory power-on default settings.

The N-3000 cannot enter the configuration mode while it is stacked unless the other instruments are in the configuration mode or are turned off. If the other instruments are in the configuration mode, the N-3000 knob may be used to scroll to the desired menu item and adjust the settings of the other instruments. Likewise, if the N-3000 is stacked with an N-3200, and both are in the configuration mode, the N-3200 knob may be used to scroll to the desired menu item and adjust the settings of the N-3000.

Use the following procedure to enter configuration mode:

1. If the monitor is on, turn it off.

2. While simultaneously pressing both UPPER and LOWER ALARM LIMIT

buttons, turn the monitor on. Continue to press both buttons until “CFG” begins flashing in the RESPIRATION RATE display.

3. Release the UPPER and LOWER ALARM LIMIT buttons.

4. Press the PRINT button. “CFG” stops flashing and remains displayed in the

RESPIRATION RATE display. (If the PRINT button is not pressed within 15 seconds after “CFG” begins flashing, the monitor will turn off automatically.)

You are now in configuration mode steady state. The N-3000 automatically powers down if no action is taken for approximately 2 minutes.

After changing or viewing a default setting, you can return to the configuration mode steady state by allowing the display to timeout (3 seconds).

To exit the configuration mode, turn the monitor off by pressing the ON/STANDBY button. Default settings take place when the monitor is turned off. Default settings also take place if the N-3000 powers down due to the 2-minute timeout.

Note: While changing default limits, there must be some user interaction with

the monitor within a 3-second period or the monitor will return to configuration mode steady state operation.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

Table 4-1 lists the default settings that can be configured and the respective entry procedures to access the settings. Methods used to change the default settings are detailed in paragraphs 4.2.1 through 4.2.10.

Table 4-1: Configuration Mode Menu

Power on Default Setting

Button Press Procedure from Configuration Mode Steady State

Paragrap h Described

Adult/Neonatal Mode NEW PATIENT/NEONATAL button

4.2.1

twice SpO2 Upper Alarm Limit UPPER ALARM LIMIT button 4.2.2 SpO2 Lower Alarm Limit LOWER ALARM LIMIT button 4.2.3 Heart/Pulse Rate Upper

UPPER ALARM LIMIT button twice 4.2.4 Alarm Limit

Heart/Pulse Rate Lower

LOWER ALARM LIMIT button twice 4.2.5 Alarm Limit

Respiration Rate Upper Alarm Limit

Respiration Rate Lower Alarm Limit

Alarm Volume ALARM SILENCE button (press and

UPPER ALARM LIMIT button three

times

LOWER ALARM LIMIT button three

times

4.2.6

4.2.7

4.2.8 hold for 3 seconds before turning knob)

Alarm Silence Duration ALARM SILENCE button (press and

4.2.9 hold; turn knob within 3 seconds)

Configuration Menu UPPER/LOWER ALARM LIMIT

Note: To change neonate default limits, enter the neonatal mode from

configuration mode steady state by pressing the NEW PATIENT/NEONATAL button twice within 2 seconds. Change the desired limit using the same method as adult default limits.

When an SpO2 or heart/pulse rate default limit has been changed, a decimal point will appear after the displayed limit until the configuration mode is exited.

4.2.1 Adult/Neonatal Mode Default

The mode (adult or neonatal) that the monitor is in when exiting the configuration mode, becomes the power-on default.

To change from a power-on default of adult mode to a power-on default of neonatal mode, enter the configuration mode steady state. Press the NEW PATIENT/NEONATAL button twice within 2 seconds and then power-down by pressing the ON/STANDBY button.

4.2.2 Default SpO2 Upper Alarm Limit

4.2.10 buttons simultaneously

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

1. From the configuration mode steady state, press and release the UPPER ALARM LIMIT button. The current default value is displayed in the SpO2% display. Dashes appear in the HEART/PULSE RATE display (the upper horizontal segments of the display), indicating that the monitor is in the “set SpO2 upper alarm limit” mode.

2. To change the upper alarm limit default value, rotate the knob on top of the monitor (or, if stacked with an N-3200 in the configuration mode, the knob on the N-3200). You cannot decrease the value lower than the current SpO2 lower alarm limit default setting. The SpO2 upper alarm limit cannot be set higher than 100.

3. Return to configuration mode steady state.

Note: If you press the LOWER ALARM LIMIT button before the 3-second

timeout, you can then change the SpO2 lower alarm limit default. If you press the UPPER ALARM LIMIT button, you can then change the pulse rate upper alarm limit default. This method can also be used while setting the other default alarm limits.

4.2.3 Default SpO2 Lower Alarm Limit

1. From the configuration mode steady state, press and release the LOWER ALARM LIMIT button. The current default value is displayed in the SpO2% display.

2. To change the lower alarm limit default value, rotate the knob on top of the monitor. You cannot increase the value higher than the current SpO2 upper alarm limit setting. The SpO2 default lower alarm limit cannot be set lower than 80.

3. Return to the configuration mode steady state.

4.2.4 Default Heart/Pulse Rate Upper Alarm Limit

1. From the configuration mode steady state, press the UPPER ALARM LIMIT button twice within 3 seconds. The current default value is displayed in the HEART/PULSE RATE display. Dashes appear in the SpO2% display (the upper horizontal segments of the display), indicating that the monitor is in the “set pulse rate upper alarm limit” mode.

2. To change the upper alarm limit default value, rotate the control knob on top of the monitor. You cannot decrease the value lower than the current pulse rate lower alarm limit default setting. The pulse rate default upper alarm limit cannot be set higher than 250.

3. Return to configuration mode steady state.

4.2.5 Default Heart/Pulse Rate Lower Alarm Limit

1. From the configuration mode steady state, press the LOWER ALARM LIMIT button twice within 3 seconds. The current default value is displayed in the HEART/PULSE RATE display.

2. To change the default lower alarm limit value, rotate the knob CW to increase, or CCW to decrease. You cannot increase the value higher than the current pulse rate upper limit setting. The pulse rate lower alarm limit cannot be set lower than 30.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

3. Return to the configuration mode steady state.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4.2.6 Default Respiration Rate Upper Alarm Limit

1. From the configuration mode steady state, press the UPPER ALARM LIMIT button three times within 3 seconds. The current default value is displayed in the RESPIRATION RATE display.

2. To change the default upper alarm limit value, rotate the control knob on top of the monitor CW to increase or CCW to decrease. You cannot decrease the value lower than the current respiration rate lower limit setting. The respiration rate upper alarm limit cannot be set higher than 150.

3. Return to the configuration mode steady state.

4.2.7 Default Respiration Rate Lower Alarm Limit

1. From the configuration mode steady state, press the LOWER ALARM LIMIT button three times within three seconds. The current default value is displayed in the RESPIRATION RATE display.

2. To change the default lower alarm limit value, rotate the knob CW to increase, or CCW to decrease. You cannot increase the value higher than the current respiration rate upper limit setting. The respiration rate lower alarm limit cannot be set lower than 3.

To set the default respiration setting to OFF, rotate the knob CCW past 3. OFF is displayed in the RESPIRATION RATE display and respiration monitoring is disabled in the current mode (adult or neonatal).

3. Return to the configuration mode steady state.

4.2.8 Default Alarm Volume

Perform the following steps to adjust the default alarm volume:

1. From the configuration mode steady state, press and hold the AUDIBLE ALARM OFF button. After 3 seconds, a continuous tone at the current volume setting is emitted. “VOL” is displayed in the HEART/PULSE RATE display, and the current default alarm setting (a number from 1 to 10) is displayed in the SpO2% display.

2. While continuing to hold the AUDIBLE ALARM OFF button, turn the control knob on the top of the monitor CW to increase the default volume, CCW to decrease the default volume.

3. Release the AUDIBLE ALARM OFF button and the monitor returns to the configuration mode steady state.

4.2.9 Default Alarm Silence Duration

The default alarm silence duration may also be adjusted while in the configuration mode. To do so:

1. From the configuration mode steady state, press and hold the AUDIBLE ALARM OFF button for 3 seconds or less. The current default setting for the alarm silence duration appears in the HEART/PULSE RATE display. The SpO2% display indicates “CFG”, while the RESPIRATION RATE display indicates “SEC” (seconds).

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

Note: Pressing the AUDIBLE ALARM OFF button for more than

3 seconds without turning the knob, causes the N-3000 to enter the “Default Alarm Volume” mode as described in paragraph 4.2.8.

2. Use the control knob on the top of the N-3000 to adjust the default alarm silence duration. Alarm silence duration choices are 30 SEC, 60 SEC, 90 SEC, and 120 SEC.

4.2.10 Configuration Menu

The configuration menu allows you to configure the functions listed in Table 4-2. After accessing a menu item by pressing the UPPER ALARM LIMIT button, if the knob is not turned and no button is pressed for a period of time equal to the “timeout” as listed in the table, you will automatically return to the configuration menu steady state. The last setting displayed for the menu item will become the default setting.

Table 4-2: Configuration Menu

Menu Number Configurable Setting

Paragraph Described Timeout

0 Pulse tone volume 4.2.10.1 3 seconds 1 UIF software version report 4.2.10.2 10

seconds

2 SpO2 software version report 4.2.10.3 10

seconds 3 Serial port baud rate 4.2.10.4 3 seconds 4 Trend type 4.2.10.5 3 seconds 5 Reset to factory defaults 4.2.10.6 N/A 6 Primary heart/pulse rate source 4.2.10.7 3 seconds 7 Primary pulse tone source 4.2.10.8 3 seconds 8 ECG lead selection 4.2.10.9 3 seconds 9 ECG pacer filter status 4.2.10.10 3 seconds 10 ECG low frequency filter status 4.2.10.11 3 seconds 11 ECG software version report 4.2.10.12 10

seconds 12 Respiration noise timeout 4.2.10.13 3 seconds

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13 Respiration sensitivity selection 4.2.10.14 3 seconds

To access the configuration menu from the configuration mode steady state, press the UPPER and LOWER ALARM LIMIT buttons simultaneously. The SpO2% display indicates the menu number (0 through 13) and the PATIENT MOTION indicator is illuminated to indicate the monitor is in the configuration menu steady state.

Rotate the knob on top of the N-3000 to access the desired menu number. Press the UPPER ALARM LIMIT button to configure the displayed item, using the procedures listed in paragraphs 4.2.10.1 through 4.2.10.14.

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

To exit the configuration menu steady state and return to the configuration mode steady state, press the LOWER ALARM LIMIT button or, if there is no knob or button activity for 15 seconds, you will automatically return to the configuration mode steady state. You may also exit by turning the monitor off.

4.2.10.1 Pulse Tone Volume

Menu item number “0” allows you to set the default volume (1 through 10) for the pulse tone.

1. From the configuration menu steady state, rotate the knob until “0” is

displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The current default pulse tone volume setting is displayed in the

HEART/PULSE RATE display. An audio tone sounds at the current volume setting Rotate the knob CW or CCW to set the desired power-on default volume level (1 through 10).

3. Press the LOWER ALARM LIMIT BUTTON to return to the configuration

menu steady state.

4.2.10.2 UIF Software Version Report

1. From the configuration menu steady state, rotate the knob until “1” is

displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The UIF software version number is the six digit number in the SpO2% and

HEART/PULSE RATE displays.

3. Press the LOWER ALARM LIMIT BUTTON to return to the configuration

menu steady state.

4.2.10.3 SpO2 Software Version Report

1. From the configuration menu steady state, rotate the knob until “2” is

displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The SpO2 software version number is the six digit number in the SpO2%

and HEART/PULSE RATE displays.

3. Press the LOWER ALARM LIMIT BUTTON to return to the configuration

menu steady state.

4.2.10.4 Serial Port Baud Rate

1. From the configuration menu steady state, rotate the knob until “3” is

displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The current baud rate, in thousands, is displayed in the HEART/PULSE

RATE display. To change the default baud rate setting, rotate the knob until the desired setting is displayed. Baud rates available are 1.2k, 2.4k, 9.6k,

19.2k, and 38.4k. Note: Baud rates should not exceed 19,200 in RS-232 mode (use

EIA-422 mode). Refer to paragraph 6.5.1 to change the communication mode settings.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

3. Press the LOWER ALARM LIMIT button to return to the configuration menu steady state.

4.2.10.5 Trend Type

Patient trend information can be accessed by attaching the N-3000 to an N-3200. It is also available for a PC via the serial port.

Menu item number 4 allows you to select “5”, “10” or “20” (displayed in the SpO2% display) as the default trend format. Selecting “20” causes patient trend data to be recorded every 20 seconds. Each patient parameter value will be both the maximum and minimum data for each parameter during the sample period. Data is stored for the most recent 32 hours of patient monitoring during the last five days. This selection is described as “Format 2” in the N-3000 operator’s manual.

Selecting “10” causes patient trend data to be recorded every 10 seconds. Each patient parameter value will be the average of all data samples for each parameter during the sample period. Data is stored for the most recent 24 hours of patient monitoring during the last five days. This selection is described as “Format 1” in the N-3000 operator’s manual.

Selecting “5” causes patient trend data to be recorded every 5 seconds. Each patient parameter value will be the most recent data sample for each parameter during the sample period. Data is stored for the most recent 12 hours of patient monitoring during the last five days. This selection is described as “Format 3” in the N-3000 operator’s manual.

1. From the configuration menu steady state, rotate the knob until “4” is displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. “5”, “10” or “20” is displayed in the HEART/PULSE RATE display. Rotate the knob to display the desired default trend type.

3. Press the LOWER ALARM LIMIT BUTTON to return to the configuration menu steady state.

4.2.10.6 Reset to Factory Defaults

Menu item number 5 allows you to reset all default settings to the original factory settings as listed in paragraph 9.6, “Factory Default Settings,” of the Specifications section.

1. From the configuration menu steady state, rotate the knob until “5” is displayed in the SpO2% display.

2. Press the UPPER ALARM LIMIT button to reset to factory defaults. Three beeps indicate that all configurable power-on default parameters, except latching alarms and alarm silence reminder enable, are set to their factory default values. You are automatically returned to the configuration menu steady state.

4.2.10.7 Primary Heart/Pulse Rate Source

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Menu item number “6” allows you to select the default primary heart/pulse rate source. Selecting “SPO” causes the pulse rate measured by an SpO2 sensor to be used as the primary source displayed in the HEART/PULSE RATE display.

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

Selecting “ECG” causes the heart rate measured by ECG leads to be used as the primary source displayed in the HEART/PULSE RATE display.

1. From the configuration menu steady state, rotate the knob until “6” is displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The current primary heart/pulse rate source is displayed in the HEART/PULSE RATE. “ECG” indicates that the primary source is the heart rate as measured with the ECG leads. “SPO” indicates that the primary source is the pulse rate as measured by the SpO2 sensor. To change the default setting, rotate the knob until the desired setting is displayed.

3. Press the LOWER ALARM LIMIT button to return to the configuration menu steady state.

4.2.10.8 Primary Pulse Tone Source

Menu item number “7” allows you to select the default heart/pulse tone source. Selecting “SPO” causes the pulse rate measured by an SpO2 sensor to provide the pulse tone. Selecting “ECG” causes the heart rate measured by ECG leads to provide the pulse tone.

1. From the configuration menu steady state, rotate the knob until “7” is displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The current pulse tone source is displayed in the HEART/PULSE RATE display. “ECG” indicates that the source is the heart beat as measured with the ECG leads. “SPO” indicates that the source is the pulse beat as measured by the SpO2 sensor. To change the default setting, rotate the knob until the desired setting is displayed.

3. Press the LOWER ALARM LIMIT button to return to the configuration menu steady state.

4.2.10.9 ECG Lead Selection

Menu item number “8” allows you to select the default ECG leads option. The leads option allows detection of the electrical signal generated by the heart along different axes through the heart. Selections are “1” (lead I, LA-RA), “2” (lead II, LL-RA) or “3” (lead III, LL-LA).

1. From the configuration menu steady state, rotate the knob until “8” is displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. “1”, “2”, or “3” is displayed in the HEART/PULSE RATE display. To change the default setting, rotate the knob until the desired setting is displayed.

3. Press the LOWER ALARM LIMIT button to return to the configuration menu steady state.

4.2.10.10 ECG Pacer Filter Status

Menu item number “9” allows you to select either “ON” or “OFF” as the pacer filter default. Pacer filter “ON” causes the N-3000 to detect and filter pacemaker generated noise signals so that they will not be measured in determining a patient’s heart rate. When the filter is “ON”, pacemaker signals of .1 to 2.0 milliseconds in duration with 2.0 to 700.0 millivolt amplitude are filtered out.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

1. From the configuration menu steady state, rotate the knob until “9” is displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. “ON” or “OFF” is displayed in the HEART/PULSE RATE display. To change the default setting, rotate the knob until the desired setting is displayed.

3. Press the LOWER ALARM LIMIT button to return to the configuration menu steady state.

4.2.10.11 ECG Low Frequency Filter Status

Menu item number “10” allows you to select “ON” or “OFF” as the low frequency filter default. Selecting “ON” enables a .05 Hz, ECG channel, high-pass filter, providing better ST segment resolution. When “OFF” is selected, a 0.5 Hz filter is used.

1. From the configuration menu steady state, rotate the knob until “10” is displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. “ON” or “OFF” is displayed in the HEART/PULSE RATE display. To change the default setting, rotate the knob until the desired setting is displayed.

3. Press the LOWER ALARM LIMIT button to return to the configuration menu steady state.

4.2.10.12 ECG Software Version Report

1. From the configuration menu steady state, rotate the knob until “11” is displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The ECG software version number is the six digit number in the SpO2% and HEART/PULSE RATE displays.

3. Press the LOWER ALARM LIMIT BUTTON to return to the configuration menu steady state.

4.2.10.13 Respiration Noise Timeout

Menu item number “12” allows you to select “5”, “10”, “15”, “20”, “25” or “30” seconds as the default adult mode setting for the amount of time before a low priority alarm is sounded when respiration noise is detected. The 25-second and 30-second selections are not available in the neonate mode.

1. From the configuration menu steady state, rotate the knob until “12” is displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. “5”, “10”, “15”, “20”, “25” or “30” is displayed in the SpO2% display. (“25” and “30” are not displayed in the neonatal mode.) Rotate the knob to display the desired default respiration noise timeout.

3. Press the LOWER ALARM LIMIT BUTTON to select the displayed setting and return to the configuration menu steady state.

4.2.10.14 Respiration Sensitivity Selection

Menu item number “13” allows you to adjust the sensitivity setting of the respiration detection circuitry. Selectable settings are 1, 2, 3, or 4, with 1 being the least sensitive and 4 the most sensitive. Decreasing the sensitivity setting

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4.3 SERVICE MODE

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

decreases the possibility that movement might be interpreted by the N-3000 as respiration, but also decreases the capability of the N-3000 to pick up light breathing. The default setting is “4”.

1. From the configuration menu steady state, rotate the knob until “13” is displayed in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. “1”, “2”, “3”, or “4” is displayed in the SpO2% display. Rotate the knob to display the desired respiration sensitivity.

3. Press the LOWER ALARM LIMIT BUTTON to select the displayed setting and return to the configuration menu steady state.

The service mode allows the technician to go through a series of tests to determine monitor functionality and to access the error log report.

The service modes cannot be accessed by the N-3000 while it is stacked with an active N-3100 or N-3200. If operating in the stacked configuration, disconnect the N-3000 from other instruments or turn the other instruments off before entering the service mode.

Use the following procedures to place the monitor into the service mode:

1. If the monitor is on, turn it off.

2. While simultaneously holding down the UPPER and LOWER ALARM LIMIT buttons and the PRINT button, press and release the ON/STANDBY button. Continue to press and hold the UPPER and LOWER ALARM LIMIT and PRINT buttons while the monitor performs the power-on self-test.

3. When “SEr” begins flashing in the AUXILIARY display, release the UPPER and LOWER ALARM LIMIT and PRINT buttons.

4. Press the PRINT button. You must press this button within 15 seconds or the monitor will turn off automatically. You are now in service mode steady state.

Note: Failure errors (refer to Troubleshooting section for an explanation of

failure errors and error codes) may be encountered by the N-3000 upon entering the service mode. The N-3000 will automatically access the menu item used to correct this situation.

If a user-correctable error code (a code beginning with “0”) is displayed while in the service mode, press the LOWER ALARM LIMIT button to clear the error.

• “SEr” stops flashing and is continuously displayed.

• The number “1” is indicated in the SpO2% display.

• The PATIENT MOTION indicator is lit, indicating that you are in the service mode steady state, with access to the main menu as indicated in Table 4-3.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

5. Use the knob to move from one main menu item to the next. While in service mode, the UPPER and LOWER ALARM LIMIT buttons are

used as enter and exit buttons, respectively. You must press the UPPER ALARM LIMIT button to select a main menu item and move to the submenu level.

6. When you have scrolled to the desired menu item, press the UPPER ALARM LIMIT button. The PATIENT MOTION indicator goes out and the PULSE SEARCH indicator illuminates.

This indicates that you are now in a submenu of the selected main menu item. Use the knob to move from one submenu item to the next. Not all menu items have submenu selections.

7. To return to the service mode steady state from a menu item, press the LOWER ALARM LIMIT button. (Menu item 3, Button Test, is an exception; it is exited by rotating the knob.)

8. To exit the service mode, power-down the monitor by pressing the ON/STANDBY button. The N-3000 is automatically powered down if no action is taken for approximately 5 minutes.

Main menu items available from the service mode steady state are discussed in numerical order as indicated in Table 4-3.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

Table 4-3: Service Mode Steady State - Main Menu

Menu No. Type of Report/Test

Paragraph Described

1 Software Version Report 4.3.1 2 Knob and Lamp Test 4.3.2 3 Button Test 4.3.3 4 Speaker Test 4.3.4 5 Internal Configuration Code (ICC) Report 4.3.5 6 Total Operating Hours Report 4.3.6 7 Error Log Record 1 4.3.7 8 Error Log Record 2 4.3.7 9 Error Log Record 3 4.3.7 10 Error Log Record 4 4.3.7 11 Error Log Record 5 4.3.7 12 Error Log Record 6 4.3.7 13 Error Log Record 7 4.3.7 14 Error Log Record 8 4.3.7 15 Error Log Record 9 4.3.7 16 Error Log Record 10 4.3.7 17 Instrument Identification (IID) Report 4.3.8 18 Power Status 4.3.9 19 Persistent Time Sense Report 4.3.10 20 Reset to Factory Defaults 4.3.11 21 Initial Cluster Instrument Number Report 4.3.12 22 Latching Alarms 4.3.13 23 Enable/Disable Alarm Silence Reminder 4.3.14 25 Dump EEPROM Data 4.3.15 28 Enable/Disable Battery Charge Circuit 4.3.16 29 Instrument Compatibility Report 4.3.17 30 SpO2 RCAL Report 4.3.18 31 SpO2 IR and Red Offset Report 4.3.19 32 SpO2 Corrected IR and Red Signals Report 4.3.20 33 SpO2 IR LED Drive Test 4.3.21 34 SpO2 Red LED Drive Test 4.3.22 35 SpO2 DM-Gain Test 4.3.23 36 SpO2 P-Gain Test 4.3.24 37 Set SpO2 Analog Test Mode 4.3.25 38 SpO2 A/D-Cal Line Test 4.3.26 39 SpO2 Enable Automatic Operation 4.3.27

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

DO NOT USE

Table 4-3: Service Mode Steady State - Main Menu - (Continued)

Menu No. Type of Report/Test

Paragraph Described

40 Set ECG Lead 4.3.28 41 Set ECG Pacer Filter 4.3.29 42 Set ECG Low Frequency Filter 4.3.30 43 Set ECG Baseline Reset 4.3.31 44 Set ECG POST Test Signal 4.3.32 45 Check ECG Cable Off Detection 4.3.33 46 Check ECG Lead Off Detection 4.3.34 47 Display ECG Output Value 4.3.35 49 ECG Enable Automatic Operation 4.3.36 51 Set Respiration Baseline Reset 4.3.37 53 Display Respiration Output Value 4.3.38 54 Enable/Disable Respiration Monitoring 4.3.39 55 Enable/Disable Breath Pulses 4.3.40 56 Respiration Enable Automatic Operation 4.3.41 60 Set Serial Port Baud Rate 4.3.42 61 Serial Port Loop Back Test 4.3.43 62 Serial Port Transmit Test 4.3.44 70 Nellcor Puritan Bennett Internal Test -

4.3.1 Menu Item 1: Software Version Report

This report identifies the software versions of the UIF and SpO2 modules.

1. From the service mode steady state, select menu item 1 by rotating the Nellcor Puritan Bennett knob until “1” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. A “1.0” appears in the SpO2% display.

The UIF software version number is the six-digit number in the HEART/PULSE RATE and RESPIRATION RATE displays.

2. Rotate the knob to change the number in the SpO2% display to “1.1”. The SpO2 software version number is the six-digit number in the HEART/PULSE RATE and RESPIRATION RATE displays.

3. Rotate the knob to change the number in the SpO2% display to “1.2”. The ECG software version number is the six-digit number in the HEART/PULSE RATE and RESPIRATION RATE displays.

Note: Respiration software is a component of the ECG software.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4.3.2 Menu Item 2: Knob and Lamp Test

This test verifies that indicators, front-panel lamps, and the control knob are functional.

1. From the service mode steady state, select menu item 2 by rotating the knob until “2” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. All indicators light.

2. Rotate the knob CW to light each display segment, decimal, indicator, and blip bar in a scanning pattern to verify that each lamp works.

Note: The POWER-ON indicator is not tested with this procedure. It can

be verified by turning the monitor on and off. The BATTERY CHARGING indicator is also not tested.

3. Rotate the knob CCW to reverse the firefly pattern. Knob functionality is verified by the even movement through the firefly pattern as the knob is turned.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.3 Menu Item 3: Button Test

This test verifies proper operation of individual buttons and button combinations.

1. From the service mode steady state, select menu item 3 by rotating the knob until “3” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. A “0” appears in the HEART/PULSE RATE display.

2. Press each of the buttons and button combinations listed below. The corresponding number appears in the HEART/PULSE RATE display to indicate that these buttons and button combinations are functioning correctly.

Displayed

Press the following button and/or button combinations:

number:

None pressed 0 Audible alarm off 1 New patient/neonatal (rear panel) 2 Upper alarm limit 3 Lower alarm limit 4 Print 5 Upper and lower alarm limits, simultaneously 6 Upper/lower limits and print, simultaneously 7 Upper limit and audible alarm off, simultaneously 8 Lower limit and audible alarm off, simultaneously 9 Any combination not listed above 10

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

3. Rotate the knob CW or CCW to return to the service mode steady state.

4.3.4 Menu Item 4: Speaker Test

This test verifies that the volume control is functional and determines whether or not there are any discontinuities or saturation conditions in the audible output.

1. From the service mode steady state, select menu item 4 by rotating the knob until “4” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. A “1” appears in the HEART/PULSE RATE display and a lowlevel audible tone heard.

2. Rotate the control knob CW. As the number in the HEART/PULSE RATE display increases from 0 to 254, the volume will correspondingly increase.

3. Rotate the control knob CCW to decrease the volume.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.5 Menu Item 5: Internal Configuration Code (ICC) Report

This menu item verifies whether the current monitor configuration is the desired configuration. The ICC is the hexadecimal representation of the instrument hardware configuration derived by the UIF processor through internal examination of the modules and software present in the N-3000.

1. From the service mode steady state, select menu item 5 by rotating the knob until “5” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The ICC value appears as the two left-most digits in the HEART/PULSE RATE display. The right-most digit displays “H” (for hexadecimal). The monitor’s configuration is represented by one of the following values:

ICC Value Monitor Configuration

3 SpO2 only, with serial port 7 SpO2 and ECG only, with serial port

F SpO2, ECG and respiration, with serial port 12 SpO2 only, with wired network interface 16 SpO2 and ECG only, with wired network interface

1E SpO2, ECG and respiration, with wired network interface FF Invalid configuration

If the displayed ICC value differs from the value stored in the EEPROM, then the displayed value will flash.

2. If the displayed value is flashing, press the UPPER ALARM LIMIT button to save the value as the default.

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3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4.3.6 Menu Item 6: Total Operating Hours Report

This report displays the total number of operating hours logged by the unit since it was produced.

1. From the service mode steady state, select menu item 6 by rotating the knob until “6” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The total number of operating hours is displayed in the SpO2% and HEART/PULSE RATE displays. Possible values are from 0 to 999,999 hours.

2. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.7 Menu Items 7-16: Error Log Record Report

This report provides information regarding the last ten error codes recorded by the monitor, the number of occurrences of that particular error, and the number of operating hours at the last time the error occurred. The error log has ten entries (menu items 7-16), as indicated below. Refer to Section 5, Troubleshooting, and the Appendix for an explanation of error codes.

The following procedure is for Error Log Record 1 (menu item 7). Use the same procedure to access Error Log Records 2 through 10 (menu items 8 through 16).

1. From the service mode steady state, select menu item 7 by rotating the knob until “7” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The number “7.0” appears in the SpO2% display.

2. Read the error code in the HEART/PULSE RATE display. A value of “000” indicates that the menu item contains no error code. If dashes are displayed, the error log contents cannot be determined.

3. Rotate the control knob CW to display “7.1” in the SpO2% display.

4. Read the number of occurrences of this particular error code in the HEART/PULSE RATE display. If “256” is displayed, there have been 256 or more occurrences.

5. Continue to rotate the control knob CW. The total number of operating hours when the last instance of the error occurred is displayed in the SpO2% and HEART/PULSE RATE displays.

6. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.8 Menu Item 17: Instrument Identification (IID) Report

This report displays a hexadecimal number corresponding to the instrument identifier. This number should agree with the address label on the outside of the instrument. However, the label and the internal value may disagree if the monitor UIF module was replaced and the external label was not changed.

1. From the service mode steady state, select menu item 17 by rotating the knob until “17” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. A hexadecimal number appears across the entire monitor display, with an “H” in the last (far right) position.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

2. Verify that this number agrees with the number on the monitor external label. If the number does not agree, the number on the external label should be changed to agree with the displayed number.

3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.9 Menu Item 18: Power Status

This test allows you to determine battery conditions.

1. From the service mode steady state, select menu item 18 by rotating the knob until “18” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The number “18.0” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the lead-acid battery voltage to the nearest tenth of a volt.

2. Rotate the control knob CW until “18.1” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the charge bus voltage to the nearest tenth of a volt.

3. Rotate the control knob CW until “18.2” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the backup lithium battery voltage to the nearest tenth of a volt.

Note: The control knob can be rotated until “18.3” appears in the SpO2%

display. However, the number shown in the HEART/ PULSE RATE display has no meaning and can be disregarded.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.10 Menu Item 19: Persistent Time Sense Report

This report allows you to determine if the internal persistent time circuit is keeping time correctly.

1. From the service mode steady state, select menu item 19 by rotating the knob until “19” appears in the SpO2% display.

2. Press the UPPER ALARM LIMIT button. The persistent time in seconds is displayed in the SpO2% and HEART/PULSE RATE displays. For example, “001 688” indicates that the monitor has been powered on for 1,688 seconds = 28 minutes, 8 seconds. Make a note of the displayed time.

If the display reads “999 999” this indicates that persistent time is greater than or equal to 999,999 seconds. If dashes are displayed, the contents of the memory of the persistent time circuit are lost. This can occur when the backup lithium battery has been replaced.

3. Using a watch or other timepiece, wait 3 minutes. Subtract the first figure you noted from the figure now displayed on the N-3000. The difference should equal approximately 3 minutes (180 seconds).

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4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4.3.11 Menu Item 20: Reset to Factory Defaults

This function allows you to reset the monitor to the factory default settings (see the Specifications section of this manual).

From the service mode steady state, select menu item 20. As soon as you press the UPPER ALARM LIMIT button, the default settings are reset. Any preset configurable alarms are now lost. When the default settings are reset, the monitor will beep three times and automatically return to the service mode steady state. If the reset was not successful, an error code will be displayed.

4.3.12 Menu Item 21: Initial Cluster Instrument Number Report

This report displays a hexadecimal number corresponding to the initial internal stack address when the instrument is being used in a stack configuration with an address conflict. Such a conflict may occur when identical instrument types (for example, two N-3100s) are in the same stack.

1. From the service mode steady state, select menu item 21 by rotating the knob until “21” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The two left-most digits in the HEART/PULSE RATE display are the hexadecimal representation of the cluster instrument number. “H” (for hexadecimal) is displayed as the right-most digit of the HEART/PULSE RATE display.

2. If the displayed value is different than the EEPROM value, the display will flash. Rotate the knob to adjust the cluster instrument number to the desired value.

3. Press the UPPER ALARM LIMIT button to accept the displayed value as the default value. The display stops flashing.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.13 Menu Item 22: Latching Alarms

This function allows you to disable or enable the latching alarm feature. The factory default setting is latching alarm disabled.

1. From the service mode steady state, select menu item 22 by rotating the knob until “22” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. Observe the enable/disable latching alarm setting of “OFF” or “ON” in the HEART/PULSE RATE display.

OFF = latching alarm disabled ON = latching alarm enabled

3. To change the enable/disable latching alarm setting, rotate the knob until the desired setting is displayed (flashing).

4. Press the UPPER ALARM LIMIT button to store the default setting.

5. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4.3.14 Menu Item 23: Enable/Disable Alarm Silence Reminder

This function allows you to disable or enable the alarm silence reminder feature. The factory default setting is alarm silence reminder enabled.

1. From the service mode steady state, select menu item 23 by rotating the knob until “23” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. Observe the alarm silence reminder setting of “OFF” or “ON” in the HEART/PULSE RATE display.

OFF = alarm silence reminder disabled ON = alarm silence reminder enabled

3. To change the alarm silence reminder setting, rotate the knob until the desired setting is displayed (flashing).

4. Press the UPPER ALARM LIMIT button to store the default setting.

5. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.15 Menu Item 25: Dump EEPROM Data

This function allows you to dump the entire contents of the EEPROM to a serial data capture device. This data may then be transmitted to Nellcor Puritan Bennett to assist in diagnosing the condition of the instrument.

Note: The N-3000 must be operating from AC power to perform this menu

item.

1. Turn the N-3000 off.

2. Connect the N-3000 to a PC through the serial port.

3. Execute your communication software application. Port settings should be set as indicated below:

Baud Rate 19,200 (or equivalent to N-3000 setting as

determined by using menu item 60) Parity N Data Bits 8 Stop Bits 1

4. Power-on the N-3000 and place it in the service mode steady state.

5. Select menu item 25 by rotating the knob until “25” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. “EE” will be displayed in the HEART/PULSE RATE display.

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6. Press the PRINT button to transmit the contents of the EEPROM memory out of the serial port.

7. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4.3.16 Menu Item 28: Enable/Disable Battery Charge Circuit

This test allows you to turn the battery charging circuit on or off.

1. From the service mode steady state, select menu item 28 by rotating the knob until “28” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. Observe the battery charging circuit setting of “OFF” or “ON” in the HEART/PULSE RATE display.

OFF = battery charging circuit disabled ON = battery charging circuit enabled

3. To enable or disable the battery charge circuit, rotate the knob until the desired setting is displayed (flashing). Press the UPPER ALARM LIMIT button.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.17 Menu Item 29: Instrument Compatibility Report

This function allows you to determine the cause of an “instruments not compatible” error message.

1. From the service mode steady state, select menu item 29 by rotating the knob until “29” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The number “29.0” appears in the SpO2% display. The number in the HEART/PULSE RATE display is the sensorbus protocol version and revision number of the N-3000.

2. Rotate the knob until “29.1” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The number in the HEART/PULSE RATE display is the multicast version and revision number of the N-3000.

3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.18 Menu Item 30: SpO2 RCAL Report

This function allows you to check the sensor RCAL value readings.

1. Connect the SRC-2 tester or a compatible sensor to the N-3000.

2. Select menu item 30 by rotating the knob until “30” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

3. Read the RCAL standard representation of the nominal sensor resistance in the HEART/PULSE RATE display.

4. If connected to an SRC-2 tester, set the SRC-2 RCAL/Mode switch to 63. The RCAL value “63” is displayed in the HEART/PULSE RATE display. Set the SRC-2 RCAL/Mode switch to 64. The RCAL value “64” is displayed in the HEART/PULSE RATE display.

5. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4.3.19 Menu Item 31: SpO2 IR and Red Offset Report

This function allows you to validate the operation of the SpO2 module. The values represent the DC voltage offset for the current amplifier gain when the amplifier inputs are zeroed. It is not necessary to use this feature unless instructed to do so by Nellcor Puritan Bennett service personnel.

1. Connect the sensor cable and SRC-2 to the N-3000.

2. Set the SRC-2 as follows:

SWITCH POSITION

RATE 38 LIGHT LOW MODULATION OFF RCAL/MODE RCAL 63/LOCAL

3. From the service mode steady state, select menu item 31 by rotating the knob until “31” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The SpO2 IR offset appears in the SpO2% display, and the SpO2 red offset appears in the HEART/PULSE RATE display. The values are displayed in millivolts.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.20 Menu Item 32: SpO2 Corrected IR and Red Signals Report

This function allows you to validate the operation of the SpO2 module. The values represent the outputs of the IR and red sensor channels after the amplifier offset values have been applied.

1. Connect the sensor to the N-3000.

2. Verify that the SpO2 module is set for automatic operation using menu item 39 (paragraph 4.3.27).

3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4. From the service mode steady state, select menu item 32 by rotating the knob until “32” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The SpO2 corrected IR output signal is displayed in the SpO2% display in hundredths of volts. The SpO2 corrected red output signal is displayed in the HEART/PULSE RATE display in hundredths of volts.

5. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.21 Menu Item 33: SpO2 IR LED Drive Test

This function allows you to validate sensors and/or the operation of the SpO2 module. It is not necessary to use this feature unless instructed to do so by Nellcor Puritan Bennett service personnel.

1. Connect the sensor to the N-3000.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

2. Verify that the SpO2 module is set for automatic operation using menu item 39 (paragraph 4.3.27).

3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4. From the service mode steady state, select menu item 33 by rotating the knob until “33” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

5. The SpO2 IR drive value (between 0-255) is displayed in the HEART/PULSE RATE display.

6. To adjust the drive value, rotate the knob. The HEART/PULSE RATE display will flash. Pressing the UPPER ALARM LIMIT button will set the displayed value in the SpO2 module, which will cease its automatic operation. The HEART/PULSE RATE display will stop flashing.

7. Press and hold the PRINT button to display the SpO2 corrected IR and red output signals as described in menu item 32. Release the PRINT button.

8. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.22 Menu Item 34: SpO2 Red LED Drive Test

This function allows you to validate sensors and/or the operation of the SpO2 module. It is not necessary to use this feature unless instructed to do so by Nellcor Puritan Bennett service personnel.

1. Connect the sensor to the N-3000.

2. Verify that the SpO2 module is set for automatic operation using menu item 39 (paragraph 4.3.27).

3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4. From the service mode steady state, select menu item 34 by rotating the knob until “34” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

5. The SpO2 red LED drive value (between 0-255) is displayed in the HEART/PULSE RATE display.

7. Press and hold the PRINT button to display the SpO2 corrected IR and red output signals as described in menu item 32. Release the PRINT button.

8. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4.3.23 Menu Item 35: SpO2 DM-Gain Test

This function allows you to validate sensors and/or the operation of the SpO2 module.

1. Connect the sensor to the N-3000.

2. Verify that the SpO2 module is set for automatic operation using menu item 39 (paragraph 4.3.27).

3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4. From the service mode steady state, select menu item 35 by rotating the knob until “35” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

5. The SpO2 demodulator gain value (from 0 to 6) is displayed in the HEART/PULSE RATE display.

6. To adjust the gain, rotate the knob. The HEART/PULSE RATE display will flash. Pressing the UPPER ALARM LIMIT button will set the displayed value in the SpO2 module, which will cease its automatic operation. The HEART/PULSE RATE display will stop flashing.

7. Press and hold the PRINT button to display the SpO2 corrected IR and red output signals as described in menu item 32. Release the PRINT button.

8. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.24 Menu Item 36: SpO2 P-Gain Test

This function allows you to validate sensors and/or the operation of the SpO2 module.

1. Connect the sensor to the N-3000.

2. Verify that the SpO2 module is set for automatic operation using menu item 39 (paragraph 4.3.27).

3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4. From the service mode steady state, select menu item 36 by rotating the knob until “36” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

5. The SpO2 preamp gain (from 0 to 3) is displayed in the HEART/PULSE RATE display.

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6. To adjust the gain value, rotate the knob. The HEART/PULSE RATE display will flash. Pressing the UPPER ALARM LIMIT button will set the displayed value in the SpO2 module, which will cease its automatic operation. The HEART/PULSE RATE display will stop flashing.

7. Press and hold the PRINT button to display the SpO2 corrected IR and red output signals as described in menu item 32. Release the PRINT button.

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

8. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.25 Menu Item 37: Set SpO2 Analog Test Mode

This function allows you to validate sensors and/or the operation of the SpO2 module.

1. Connect the sensor to the N-3000.

2. From the service mode steady state, select menu item 37 by rotating the knob until “37” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

3. The test mode setting of “0” (normal operation) is displayed in the HEART/PULSE RATE display. “SEr” is displayed in the AUXILIARY display and “37” is displayed in the SpO2% digital display.

4. Rotate the knob to select other settings. 1 = “zero” setting

2 = “system test” setting If the displayed value is different from the current SpO2 value, the display

will flash. Pressing the UPPER ALARM LIMIT button will set the displayed value in

the SpO2 module, which will cease its automatic operation.

5. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.26 Menu Item 38: SpO2 A/D-Cal Line Test

This function allows you to verify calibration of the SpO2 A/D converter.

1. From the service mode steady state, select menu item 38 by rotating the knob until “38” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. Observe the PULSE RATE display. The possible values 0, 1, 2, or 3 indicate the following status

“0” Indicates that both A/D converters are undergoing self-calibration,

which will take approximately 3 seconds. A value of “0” after the 3-second period indicates that both converters have failed selfcalibration.

“1” Indicates that the IR A/D converter has completed self-calibration and

the red A/D is still undergoing self-calibration or has failed selfcalibration.

“2” Indicates that the red A/D converter has completed self-calibration

and the IR A/D is still undergoing self-calibration or has failed selfcalibration.

“3” Indicates that both converters have completed self-calibration.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.27 Menu Item 39: SpO2 Enable Automatic Operation

This function allows you to enable or disable the SpO2 module automatic operation mode.

1. Connect the sensor to the N-3000.

2. From the service mode steady state, select menu item 39 by rotating the knob until “39” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

3. Observe the SpO2 automatic operation setting of “OFF” or “ON” in the HEART/PULSE RATE display.

OFF = SpO2 module is not in automatic operation ON = SpO2 module is in automatic operation

4. Rotate the knob to change the display and turn automatic operation ON or OFF. Press the UPPER ALARM LIMIT button to change the setting.

5. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.28 Menu Item 40: Set ECG Lead

This function allows you to change the ECG lead setting. The power-on default setting is not changed.

1. From the service mode steady state, select menu item 40 by rotating the knob until “40” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The currently selected ECG lead is displayed in the HEART/PULSE RATE display.

0 = OFF 1 = lead I (LA-RA) 2 = lead II (LL-RA) 3 = lead III (LL-LA)

3. Rotate the knob to the desired ECG lead setting.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.29 Menu Item 41: Set ECG Pacer Filter

This function allows you to turn the pacer filter ON or OFF. Pacer filter “ON” causes the N-3000 to filter pacemaker generated signals so that they will not be measured in determining a patient’s heart rate. When the filter is “ON”, pacemaker signals of .1 to 2.0 milliseconds in duration with 2.0 to 700.0 millivolt amplitude are filtered out.

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The power-on default setting is not changed.

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

1. From the service mode steady state, select menu item 40 by rotating the knob until “40” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. “ON” or “OFF” is displayed in the HEART/PULSE RATE display. To change the current setting, rotate the knob until the desired setting is displayed. Press the UPPER ALARM LIMIT button to change the setting.

3. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.30 Menu Item 42: Set ECG Low Frequency Filter

This function allows you to change the ECG low frequency filter for service mode testing. Selecting “ON” enables a .05 Hz, ECG channel, high-pass filter, providing better ST segment resolution. When “OFF” is selected, a 0.5 Hz filter is used.

The power-on default setting is not changed.

1. From the service mode steady state, select menu item 42 by rotating the knob until “42” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The currently selected ECG low frequency filter status is displayed in the HEART/PULSE RATE display.

OFF = Filter is disabled (0.5 - 40 Hz bandwidth) ON = Filter is enabled (0.05 - 40 Hz bandwidth)

3. Rotate the knob to the desired low frequency filter setting. Press the UPPER ALARM LIMIT button to change the setting.

4. Press the LOWER ALARM LIMIT button to select the setting and return to the service mode steady state.

4.3.31 Menu Item 43: Set ECG Baseline Reset

This function allows you to control the ECG reset switch for service mode testing. The power-on default setting is not changed. It is not necessary to use this feature unless instructed to do so by Nellcor Puritan Bennett service personnel.

1. From the service mode steady state, select menu item 43 by rotating the knob until “43” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The currently selected reset position, “OFF” or “ON” is displayed in the HEART/PULSE RATE display.

3. Rotate the knob to the desired ECG reset. Press the UPPER ALARM LIMIT button to change the setting.

4. Press the LOWER ALARM LIMIT button to select the setting and return to the service mode steady state.

4.3.32 Menu Item 44: ECG POST Test Signal

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

This function allows you to send an internal test signal either singly or repetitively from the ECG module for service mode testing.

1. From the service mode steady state, select menu item 44 by rotating the knob until “44” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. “44” is displayed in the SpO2% display. “0” is displayed in the HEART/PULSE RATE display. Rotate the knob to display the following functions:

0 = ECG POST-TEST line high 1 = ECG POST-TEST line low 2 = Lead selection is set to OFF and a 100 ms pulse is transmitted out

the ECG POST-TEST line each time the UPPER ALARM LIMIT button is pressed

3 = Lead selection is set to OFF and a 100 ms pulse is transmitted out

the ECG POST-TEST line once a second

3. Press the UPPER ALARM LIMIT button to select the desired setting.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.33 Menu Item 45: Check ECG Cable Off Detection

This function allows you to test the ECG cable off circuitry.

1. From the service mode steady state, select menu item 45 by rotating the knob until “45” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The current ECG cable status is displayed in the HEART/PULSE RATE display.

OFF = cable off is detected ON = no cable off is detected

3. Press the LOWER ALARM LIMIT button to select the setting and return to the service mode steady state.

4.3.34 Menu Item 46: Check ECG Lead Off Detection

This function allows you to test the ECG lead off circuitry.

1. From the service mode steady state, select menu item 46 by rotating the knob until “46” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

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2. The current ECG lead status is displayed in the HEART/PULSE RATE display.

OFF = lead off is detected ON = no lead off is detected

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

3. Press the LOWER ALARM LIMIT button to select the setting and return to the service mode steady state.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4.3.35 Menu Item 47: Display ECG Output Value

This function allows you to test the ECG A/D channel.

1. From the service mode steady state, select menu item 47 by rotating the knob until “47” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The PULSE SEARCH indicator is illuminated. The number “47.0” appears in the SpO2% display and the HEART/PULSE RATE display flashes “ON” while the maximum, minimum, and average values for the ECG display and ECG analysis channels are captured.

2. When “ON” stops flashing, the maximum value in volts for the ECG display channel during the 1-second capture period is indicated in the HEART/PULSE RATE display.

3. Rotate the control knob CW until “47.1” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the average value in volts for the ECG display channel during the 1-second capture period.

4. Rotate the control knob CW until “47.2” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the minimum value in volts for the ECG display channel during the capture period.

5. Rotate the control knob CW until “47.3” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the maximum value in volts for the ECG analysis channel during the capture period.

6. Rotate the control knob CW until “47.4” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the average value in volts for the ECG analysis channel during the capture period.

7. Rotate the control knob CW until “47.5” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the minimum value in volts for the ECG analysis channel during the 1-second period.

8. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.36 Menu Item 49: ECG Enable Automatic Operation

This function allows you to enable or disable the ECG module automatic operation mode. It is not necessary to use this feature unless instructed to do so by Nellcor Puritan Bennett service personnel.

1. From the service mode steady state, select menu item 49 by rotating the knob until “49” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The HEART/PULSE RATE display indicates whether or not the ECG module is in automatic operation.

OFF = not in automatic operation ON = in automatic operation

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3. Rotate the knob to change the setting. Press the UPPER ALARM LIMIT button to change the setting.

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.37 Menu Item 51: Set Respiration Baseline Reset

This function allows you to control the respiration reset switch for service mode testing. The power-on default setting is not changed. It is not necessary to use this feature unless instructed to do so by Nellcor Puritan Bennett service personnel.

1. From the service mode steady state, select menu item 51 by rotating the knob until “51” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The currently selected reset position, “OFF” or “ON”, is displayed in the HEART/PULSE RATE display. The normal position is “OFF”.

3. Rotate the knob to the desired respiration reset. The displayed reset position will flash if it is different than a previously set value or if the ECG module is currently in automatic operation (menu item 49). Press the UPPER ALARM LIMIT button to change the setting.

4. Press the LOWER ALARM LIMIT button to select the setting and return to the service mode steady state.

4.3.38 Menu Item 53: Display Respiration Output Value

This function allows you to test the respiration A/D circuitry. It is not necessary to use this feature unless instructed to do so by Nellcor Puritan Bennett service personnel.

1. From the service mode steady state, select menu item 53 by rotating the knob until “53” appears in the SpO2% display. Press the UPPER ALARM LIMIT button. The PULSE SEARCH indicator is illuminated. The number “53.0” appears in the SpO2% display and the HEART/PULSE RATE display flashes “ON” while the maximum, minimum, and average values for the respiration channel and maximum and minimum values for the respiration impedance channel are captured.

2. When “ON” stops flashing, the maximum value in volts for the respiration signal during the capture period is indicated in the HEART/PULSE RATE display.

3. Rotate the control knob CW until “53.1” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the average value in volts for the respiration signal during the capture period.

4. Rotate the control knob CW until “53.2” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the minimum value in volts for the respiration signal during the capture period.

5. Rotate the control knob CW until “53.3” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the maximum value in volts for the respiration impedance signal during the capture period.

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Section 4: Configuration Mode, Service Mode, and Alarm Active Function

6. Rotate the control knob CW until “53.4” appears in the SpO2% display. The number shown in the HEART/PULSE RATE display is the minimum value in volts for the respiration impedance signal during the capture period.

7. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.39 Menu Item 54: Enable/Disable Respiration Monitoring

This function allows you to disable the respiration system for service mode testing. The setting does not affect normal mode operation. The power-on default setting is not changed. It is not necessary to use this feature unless instructed to do so by Nellcor Puritan Bennett service personnel.

1. From the service mode steady state, select menu item 54 by rotating the knob until “54” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The currently selected setting is displayed in the HEART/PULSE RATE display.

OFF = disabled ON = enabled

3. Rotate the knob to the desired setting. If the displayed value is different from the current setting, it will flash.

4. Press the UPPER ALARM LIMIT button to change the setting.

5. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.40 Menu Item 55: Enable/Disable Breath Pulses

This function allows you to enable or disable breath pulses from the serial port. When a setting is changed using this function, the power-on default setting is also changed.

When breath pulses are enabled, a pulse for each detected breath is sent out via the serial port DTR output.

1. From the service mode steady state, select menu item 55 by rotating the knob until “55” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The currently selected setting is displayed in the HEART/PULSE RATE display.

OFF = disabled ON = enabled

4-32

3. Rotate the knob to the desired setting. If the displayed value is different from the current setting, it will flash.

4. Press the UPPER ALARM LIMIT button to change the setting and store it as the default setting.

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

5. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.41 Menu Item 56: Respiration Enable Automatic Operation

This function allows you to enable or disable the respiration automatic operation mode. It is not necessary to use this feature unless instructed to do so by Nellcor Puritan Bennett service personnel.

1. From the service mode steady state, select menu item 56 by rotating the knob until “56” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The HEART/PULSE RATE display indicates whether or not the respiration circuit is in automatic operation.

OFF = not in automatic operation ON = in automatic operation

3. Rotate the knob to view the settings. If the displayed value is different than the current setting, the display will flash.

4. Press the UPPER ALARM LIMIT button to accept the displayed value.

5. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.42 Menu Item 60: Set Serial Port Baud Rate

This function allows you to set the default serial port baud rate.

1. From the service mode steady state, select menu item 60 by rotating the knob until “60” appears in the SpO2% display. Press the UPPER ALARM LIMIT button.

2. The current baud rate, in hundreds, is displayed in the HEART/PULSE RATE display. Rotate the knob to view the settings. If the displayed value is different than the current setting, the display will flash.

Note: When the N-3000 is connected to a PC in the RS-232 format, a

baud rate above 19,200 should not be used.

3. Press the UPPER ALARM LIMIT button to store the displayed value as the default setting.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.43 Menu Item 61: Serial Port Loop Back Test

This test verifies that, when the N-3000 is connected to a PC through the N-3000 serial port, the serial port receive hardware is functional.

Note: The N-3000 must be operating from AC power to perform this menu

item.

1. Turn the N-3000 off.

4-33

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

2. Connect the N-3000 to a PC through the serial port.

4-34

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

3. Execute your communication software application. Port settings should be set as indicated below:

Baud Rate 19200 (or as set using menu item 60) Parity N Data Bits 8 Stop Bits 1

4. Turn on the N-3000 and place it in the service mode.

5. Select menu item 61 by rotating the knob until “61” appears in the SpO2% display. “SLT” appears in the HEART/PULSE RATE display. Press the UPPER ALARM LIMIT button.

6. Type any characters on your PC keyboard and verify that the characters are echoed on the PC screen. This confirms that data received on the serial port receive line is transmitted on the transmit data line.

7. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

4.3.44 Menu Item 62: Serial Port Transmit Test

This test verifies that, when the N-3000 is connected to a PC through the N-3000 serial port, the serial port transmit hardware is functional.

Note: The N-3000 must be operating from AC power to perform this menu

item.

1. Perform steps 1 through 4 as indicated in paragraph 4.3.43, menu item 61.

2. Select menu item 62 by rotating the knob until “62” appears in the SpO2% display. “STT” appears in the HEART/PULSE RATE display. Press the UPPER ALARM LIMIT button.

3. Verify that a fixed pattern of bytes (0 through 255) are repeatedly transmitted on the data line when menu item 62 is selected.

4. Press the LOWER ALARM LIMIT button to return to the service mode steady state.

Caution: Menu items 70 and above are for factory purposes only. Adjustment of menu items 70 and above by other than qualified factory personnel may cause the N-3000 to malfunction.

4.4 ALARM ACTIVE FUNCTION

The N-3000 alarm active function allows low, medium, or high priority alarms to be monitored from a remote location via the N-3000 serial port. This function allows use of a “nurse call” light. Alarm monitoring also applies to an attached, active N-3100 or N-3200. The monitoring remains active whether the monitor is operating on AC or DC power.

4-35

Section 4: Configuration Mode, Service Mode, and Alarm Active Function

Pin 6 on the serial port is open when no alarms are active. Alarm activity results in pin 6 shorting to ground. The pin will remain shorted to ground as long as the alarm is sounding.

Figure 4-1: Serial Port Pin Locations

If voltage levels of ±7 volts on pin 1 are desired for remote alarm monitoring (while in RS-232 mode), short together the DSR (pin 2) and TXD (pin 3) lines of the communication cable. Once the alarm active function has been enabled during power-on, an alarm will toggle the DTR line pin 1 from a logic LOW of -7 volts to a HIGH of +7 volts. As long as the alarm is sounding, this line will remain HIGH. When the alarm is silenced, or becomes inactive, the line will return to its LOW logic level.

If a continuous 3.3 volt signal on pin 6 is desired (as when using the Nellcor Puritan Bennett SOC-3 adapter), change the dip switch settings on the Communications PCB as instructed in paragraph 6.5.1.

4-36

SECTION 5: TROUBLESHOOTING

5.1 Introduction

5.2 How to Use this Section

5.3 Who Should Perform Repairs

5.4 Replacement Level Supported

5.5 Obtaining Replacement Parts

5.6 Troubleshooting Guide

5.1 INTRODUCTION

This section explains how to troubleshoot the N-3000 if problems arise. Tables are supplied that list possible monitor difficulties, along with probable causes, and recommended actions to correct the difficulty.

5.2 HOW TO USE THIS SECTION

Use this section in conjunction with Section 3, Performance Verification, and Section 7, Spare Parts. To remove and replace a part you suspect is defective, follow the instructions in Section 6, Disassembly Guide. The circuit analysis section in the Technical Supplement offers information on how the monitor functions.

5.3 WHO SHOULD PERFORM REPAIRS

Only qualified service personnel should open the monitor housing, remove and replace components, or make adjustments. If your medical facility does not have qualified service personnel, contact Nellcor Puritan Bennett Technical Services or your local Nellcor Puritan Bennett representative.

5.4 REPLACEMENT LEVEL SUPPORTED

The replacement level supported for this product is to the printed circuit board (PCB) and major subassembly level. Once you isolate a suspected PCB, follow the procedures in Section 6, Disassembly Guide, to replace the PCB with a known good PCB. Check to see if the trouble symptom disappears and that the monitor passes all performance tests. If the trouble symptom persists, swap back the replacement PCB with the suspected malfunctioning PCB (the original PCB that was installed when you started troubleshooting) and continue troubleshooting as directed in this section.

5.5 OBTAINING REPLACEMENT PARTS

Nellcor Puritan Bennett Technical Services provides technical assistance information and replacement parts. To obtain replacement parts, contact Nellcor Puritan Bennett or your local Nellcor Puritan Bennett representative. Refer to parts by the part names and part numbers listed in Section 7, Spare Parts.

5-1

Section 5: Troubleshooting

5.6 TROUBLESHOOTING GUIDE

Problems with the N-3000 are separated into the categories indicated in Table 5-

1. Refer to the paragraph indicated for further troubleshooting instructions.

Note: Taking the recommended actions discussed in this section will correct

the majority of problems you will encounter. However, problems not covered here can be resolved by calling Nellcor Puritan Bennett Technical Services or your local representative.

Problem Area Refer to Paragraph

Table 5-1: Problem Categories

1. Power

5.6.1

• No power-up on AC and/or DC

• Fails power-on self-test

• Powers down without apparent cause

2. Error Messages 5.6.2

3. Buttons/Knob

5.6.3

• Monitor does not respond properly to buttons and/or knob

4. Display/Alarms

5.6.4

• Displays do not respond properly

• Alarms or other tones do not sound properly or are generated without apparent cause

5. Operational Performance

5.6.5

• Displays appear to be operational, but monitor shows no readings

• Suspect readings

6. Stacked Configuration

5.6.6

5-2

• N-3000 operates properly when used alone but not when stacked

7. Serial Port

5.6.7

• N-3000 and PC not communicating properly

All of the categories in Table 5-1 are discussed in the following paragraphs.

5.6.1 Power

Section 5: Troubleshooting

Power problems are related to AC and/or DC. Table 5-2 lists recommended actions to power problems.

Table 5-2: Power Problems

Condition Recommended Action

1. BATTERY-INUSE/BATTERY LOW indicator lights steadily while N-3000 is connected to AC via the external power supply.

2. The N-3000 does not operate when disconnected from its external power supply or the power failure alarm sounds when AC power is disconnected.

1. Ensure that the SPS or PSS power supply is plugged into an operational AC outlet. If using the SPS power supply and the power supply indicator light is not lit, replace the power supply. If using the PSS power supply, refer to the PSS-1 technical manual.

2. Ensure that the power supply is properly plugged into the N-3000.

3. Check the fuse. The fuse is located on the lower docking connector as indicated in paragraph 6.3 and Figure 6-3 of the Disassembly Guide section. Replace if necessary.

4. Check the ribbon connection from the bottom enclosure to the UIF PCB, as instructed in paragraph

6.5 of the Disassembly Guide section. If the connection is good, replace the UIF PCB.

1. The battery may be discharged. To recharge the battery, refer to paragraph 3.3.1, Battery Charge. The monitor may be used with a less than fully charged battery but with a corresponding decrease in operating time from that charge.

2. If the battery fails to hold a charge, replace the battery as indicated in Section 6, Disassembly Guide.

3. BATTERY-INUSE/BATTERY LOW indicator flashes during DC operation.

4. The microprocessor failure alarm sounds and no error code is displayed.

There are 15 minutes or less of usable charge left on the N-3000 battery. At this point, if possible, cease use of the N-3000 on battery power, connect it to its external power source and allow it to recharge (approximately 14 hours). The N-3000 may continue to be used while it is recharging.

Replace the UIF PCB.

5-3

Section 5: Troubleshooting

5.6.2 Error Codes

When there is a problem within the N-3000 monitor, an error code may be displayed on the front panel, as illustrated:

These codes correspond to messages that indicate what part of the monitor is at fault. Actions to take when encountering error codes are listed below. For a more thorough understanding of the error codes, refer to Appendix A.

5.6.2.1 User-Correctable Error Codes

The following error codes can be corrected by the operator:

Error Code

5.6.2.2 Failure Error Codes

Explanation

055 Current user input values (limits, volumes, times) have been lost

during an internal reset and the unit has returned to power-on defaults. Reset the values if different from power-on defaults.

058 Alarm and beep volume, audible alarm silence duration and

operating mode have returned to power-on defaults due to an internal instrument reset.

062

063

Alarm limits have been reset to their power-on default due to software corruption in the ECG module. Press the UPPER or LOWER ALARM LIMIT button twice to display the heart rate alarm limit. This resets all limits to their power-on defaults. Turning the unit off and back on again produces the same results.

081 Cannot calibrate sensor (possible shorted/open LED or cable).

Check sensor and cable connections. Check sensor and cable; replace if necessary. If replacing sensor and/or cable does not fix the problem, remove the N-3000 monitor from service. Use the SpO2 diagnostic tests (service mode menu item numbers 31 through 39) to further evaluate the problem.

5-4

Failure error codes are those that are displayed by the monitor with a leading digit other than “0”. In some cases, these codes can be cleared by simply turning the monitor off and then on again.

Table 5-3 lists the possible failure error codes and the recommended action to take. If the action requires replacement of a PCB, refer to Section 6, Disassembly Guide. If the recommended action fails to solve the problem, notify Nellcor Puritan Bennett Technical Services or your local representative. Refer to the Appendix for a further explanation of the codes.

Table 5-3: N-3000 Failure Error Codes

Error Code Recommended Action

106 1. Turn the monitor off, then on again.

2. If the error code still appears, power-down the monitor and verify that the UIF PCB ROM (U3) is securely seated in its socket. Turn the monitor on again.

3. If the error code still appears, power down the monitor and replace the UIF PCB.

Section 5: Troubleshooting

108, 109, 111, 178

1. Turn the monitor off, then on again.

2. If the error code still appears, power-down the monitor and

replace the UIF PCB.

110 1. Turn the monitor off, then on again.

2. Use service mode menu item number 18 to evaluate the

status of the lithium backup battery.

3. If necessary, power-down the monitor and replace the lithium

backup battery.

4. If the error code still appears, power down the monitor and

replace the UIF PCB.

114, 183,

Turn the monitor off, then on again.

283 151, 175,

176

1. Turn the monitor off, then on again.

2. If the error code still appears, turn off the monitor. Verify that the SpO2 Module ROM is securely seated in the socket.

3. Verify that the SpO2 Controller PCB is securely seated.

4. Turn the monitor on. If the error code still appears, replace the

SpO2 Controller PCB.

5. If the error code still appears, power-down the monitor and

replace the UIF PCB.

159 1. Use the service mode menu item 20 to reset the default

values to factory default values as discussed in Section 4,

Configuration and Service Modes.

2. If the error code still appears, power-down the monitor and replace the UIF PCB.

3. If the error code still appears, power down the monitor and

replace the SpO2 Controller PCB.

177 1. Turn the monitor off, then on again.

2. If the error code still appears and the N-3000 is stacked with

another instrument, turn all stacked instruments off and then on again.

5-5

Section 5: Troubleshooting

Table 5-3: N-3000 Failure Error Codes - (Continued)

Error Code Recommended Action

178, 191 1. Turn the monitor off, then on again.

2. If the error code still appears, use the service mode, menu item 20, to reset the default values to factory default values as discussed in Section 4, Configuration and Service Modes.

3. If the error code still appears, replace the UIF PCB.

179 1. Turn the monitor off, then on again.

2. If the error code is occurring while powering on after the replacement of the UIF PCB, perform the procedure in paragraph 6.10.1. If the error code still appears, verify compatibility of UIF Module SW ROM and SpO2 Module SW ROM part numbers by using service mode menu item 17. If the error code still appears, contact Nellcor Puritan Bennett Technical Services or your local representative.

3. If the error code still appears, verify compatibility of UIF

Module SW ROM and SpO2 Module SW ROM part numbers by using service mode menu item 17. If the error code still appears, contact Nellcor Puritan Bennett Technical Services or your local representative to ensure the numbers are compatible.

4. If the numbers are compatible, power-down and verify that

the SpO2 Module ROM is securely seated.

5. Verify that the SpO2 Controller PCB and SpO2 module are

securely seated.

6. Turn the monitor on. If the error code still appears, replace the SpO2 Controller PCB.

7. If the error code still appears, replace the UIF PCB.

189, 376 1. Turn the monitor off, then on again.

2. If the error code still appears, replace the UIF PCB.

192, 195, 196

1. Turn the monitor off, then on again.

2. Use the service mode, menu item 29, to verify the compatibility of your software.

3. If the error code still appears, verify compatibility of the ROMs by calling Nellcor Puritan Bennett Technical Services or your local representative.

203, 206, 211

1. Turn the monitor off, then on again.

2. If the error code still appears, power-down the monitor and replace the SpO2 Controller PCB.

204, 205 1. Turn the monitor off, then on again.

2. If the error code still appears, power-down the monitor and replace the SpO2 PCB.

3. If the error code still appears, power down the monitor and replace the SpO2 Controller PCB.

5-6

5.6.3 Buttons/Knob

Section 5: Troubleshooting

Table 5-3: N-3000 Failure Error Codes - (Continued)

Error Code Recommended Action

275, 276 1. Turn the monitor off, then on again.

2. If the error code still appears, power-down and verify that the

SpO2 Controller PCB is securely seated.

3. If the error code still appears, replace the SpO2 Controller

PCB.

4. If the error code still appears, power down the monitor and

replace the UIF PCB.

308, 309, 310

1. Turn the monitor off, then on again.

2. If the error code still appears, power-down the monitor and replace the ECG PCB.

Table 5-4 lists symptoms of problems relating to nonresponsive buttons or the Nellcor Puritan Bennett knob and recommended actions. If the action requires replacement of a PCB, refer to Section 6, Disassembly Guide.

Table 5-4: Buttons/Knob Problems

Condition Recommended Action

1. The N-3000 turns on but does not respond to the knob (buttons are operational).

1. If possible, verify the problem with the service mode, menu item 2, knob and lamp test.

2. Verify proper connection between knob and UIF PCB.

3. If the condition still persists, replace the UIF PCB.

2. The N-3000 responds to some, but not all buttons.

1. Verify the problem and identify faulty buttons with the service mode, menu item 3, button test.

2. If faulty buttons are AUDIBLE ALARM SILENCE button or NEW PATIENT/ NEONATAL button, replace UIF PCB.

3. If faulty buttons are on front panel, replace Display PCB. If the buttons still do not work, replace the UIF PCB.

3. The N-3000 turns on but does not respond to either the knob or any of the buttons.

1. Press the NEW PATIENT/NEONATAL button twice rapidly. If the NEONATAL MODE indicator lights, replace the Display PCB.

2. If the NEONATAL MODE indicator does not light, replace the UIF PCB.

5-7

Section 5: Troubleshooting

5.6.4 Display/Alarms

Table 5-5 lists symptoms of problems relating to nonfunctioning displays, audible tones or alarms, and recommended actions. If the action requires replacement of a PCB or module, refer to Section 6, Disassembly Guide.

Table 5-5: Display/Alarms Problems

Condition Recommended Action

1. Display values are missing or erratic.

2. Display segments do not light.

3. When the ECG cable is connected, there is no HEART/PULSE RATE display, but the SpO2% display is functional.

1. If the sensor is connected, replace the sensor connector assembly.

2. If the condition persists, replace the sensor extension cable.

3. If the condition does not change, replace the SpO2 PCB.

4. If the condition still persists, replace the ECG PCB.

5. If the condition still persists, replace the UIF PCB.

1. Verify the problem with the service mode menu item 2, knob and lamp test.

2. Check the connection between the UIF PCB and the Display PCB.

3. If the condition does not change, replace the Display PCB.

4. If the condition still persists, replace the UIF PCB.

1. Replace the cable with a known serviceable cable.

2. Ensure there is a good connection between the ECG PCB and UIF PCB.

3. If the condition still persists, replace the ECG PCB.

5-8

4. Alarm sounds for no apparent reason.

1. Moisture or spilled liquids can cause an alarm to sound. Allow the monitor to dry thoroughly before using.

2. If the condition persists, replace the UIF PCB.

5. Alarm does not sound. 1. Verify the problem with the service mode menu item 4, speaker test.

2. Replace the speaker as described in Section 6, Disassembly Guide.

3. If the condition persists, replace the UIF PCB.

5.6.5 Operational Performance

Table 5-6 lists symptoms of problems relating to operational performance (no error codes displayed) and recommended actions. If the action requires replacement of a PCB or module, refer to Section 6, Disassembly Guide.

Condition Recommended Action

Section 5: Troubleshooting

Table 5-6: Operational Performance Problems

1. The PULSE AMPLITUDE indicator seems to indicate a pulse, but the digital displays show zeroes.

2. SpO2 or heart/pulse rate values change rapidly; PULSE AMPLITUDE indicator is erratic.

3. When the ECG cable is disconnected from the leads during operation, there is no cable off alarm.

1. The sensor may be damaged; replace it.

2. If the condition still persists, replace the UIF PCB.

1. The sensor may be damp or may have been reused too many times. Replace it.

2. An electrosurgical unit (ESU) may be interfering with performance:

– Move the N-3000 and its cables and

sensors as far from the ESU as possible.

– Plug the N-3000 power supply and the

ESU into different AC circuits.

– Move the ESU ground pad as close to the

surgical site as possible and as far away from the sensor as possible.

3. Verify the performance with the procedures detailed in Section 3.

4. If the condition still persists, replace the UIF PCB.

1. Replace the cable with a known serviceable cable.

2. If the condition still persists, replace the ECG PCB.

4. When the ECG leads are disconnected from the patient during operation, there is no leads off alarm.

5. Monitor is functional for some of the ECG lead settings (I, II, or III), but not all.

1. Replace the cable and leads with known serviceable cable and leads.

2. If the condition still persists, replace the ECG PCB.

1. Replace the cable and leads with known serviceable cable and leads.

2. If the condition still persists, replace the ECG PCB.

5-9

Section 5: Troubleshooting

5.6.6 Stacked Operation

Table 5-7 lists symptoms of problems encountered while in the stacked configuration with the N-3100 and recommended actions. Refer to the N-3100 service manual for more troubleshooting information. For problems encountered while stacked with the N-3200, refer to the N-3200 service manual.

Condition Recommended Action

Table 5-7: Stack Problems

1. BATTERY IN USE/BATTERY LOW indicators on the N-3000 and N-3100 light steadily while they are connected to AC via the external power supply. Both units are operational.

2. BATTERY IN USE/BATTERY LOW indicators on the N-3000 and N-3200 light steadily while they are connected to AC. Both units are operational.

3. BATTERY IN USE/BATTERY LOW indicators on the N-3000 light steadily but N-3100 and/or N-3200 does not while they are connected to AC. The units are operational.

2. Ensure that the power supply is properly plugged into the N-3100.

3. Check the N-3000 fuse and replace if necessary.

1. Ensure that the N-3200 power cord is plugged into an operational AC outlet and the N-3200 AC receptacle.

2. Ensure that the AC power switch on the rear panel of the N-3200 is ON.

3. Check the N-3200 fuse and replace if necessary.

4. If the condition persists, replace the N-3200 power supply as instructed in the N-3200 service manual.

1. Ensure that a good docking connection exists between the N-3000 and N-3100/N-3200.

2. Check the N-3000 fuse and replace it if necessary, as indicated in the Disassembly Guide section.

5-10

4. BATTERY IN USE/BATTERY LOW indicators on the N-3100 or N-3200 light steadily but N-3000 does not while they are connected to AC via the external power supply. Both units are operational.

1. Check the N-3100 and N-3200 fuses and replace if necessary, as indicated in the Disassembly Guide section of the N-3100 or N-3200 service manual.

Table 5-7: Stack Problems - (Continued)

Condition Recommended Action

Section 5: Troubleshooting

5. The N-3000 and N-3100 do not operate when disconnected from the external power supply.

6. The N-3000 and N-3200 do not operate when disconnected from AC power.

7. While operating on battery power, the N-3000 operates with BATTERY IN USE/BATTERY LOW indicator lighting steadily but N-3100 does not operate.

1. The N-3000 battery may be discharged. To recharge the battery, keep the N-3000 connected to its external power supply. Confirm that the BATTERY CHARGING indicator lights. The monitors may be used with a less than fully charged battery but with a corresponding decrease in operating time from that charge.

2. If the battery fails to hold a charge, replace as indicated in the Disassembly Guide section.

1. The N-3000 battery and N-3200 batteries may be discharged. To recharge the batteries, keep the N-3200 connected to AC power. Confirm that the BATTERY CHARGING indicator lights. The monitors may be used with a less than fully charged battery but with a corresponding decrease in operating time from that charge.

2. If the battery fails to hold a charge, replace as indicated in the Disassembly Guide section.

1. Ensure that a good docking connection exists

between the N-3000 and N-3100.

2. If the condition persists, recharge the battery.

The battery may have enough power left to operate the N-3000 but not the N-3100.

5-11

Section 5: Troubleshooting

5.6.7 Serial Port

Table 5-8 lists symptoms of problems relating to the serial port and recommended actions. If the action requires replacement of a PCB or module, refer to Section 6, Disassembly Guide.

Table 5-8: Serial Port Problems

Condition Recommended Action

1. The measured voltages at the serial port (paragraph 3.3.4.4.3) are incorrect.

2. The measured voltages at the serial port (paragraph 3.3.5.3) are correct but messages are not being transmitted or received.

1. Ensure the Communications PCB switch settings are as described in paragraph 6.5.1.

2. If the condition persists, replace the Communications PCB.

3. If the condition still persists, replace the UIF PCB.

1. Perform the serial port loop back (menu item

61) and serial port transmit (menu item 62) tests in the service mode (paragraphs 4.3.43 and 4.3.44). If the tests are successful, recheck the message formats you are sending to the monitor, ensure that a good cable connection exists between PC and N-3000, and verify the baud rate using the service mode, menu item 60. (When connected to a PC in the RS-232 format, a baud rate above 19,200 should not be used.)

2. If the test fails, ensure the Communications PCB switch settings are as described in paragraph 6.8.

3. If the condition persists, replace the Communication PCB.

4. If the condition still persists, replace the UIF PCB.

5-12

SECTION 6: DISASSEMBLY GUIDE

6.1 Introduction

6.2 Removing the Battery

6.3 Battery Replacement

6.4 Fuse Replacement

6.5 Monitor Disassembly

6.6 Removing the Alarm Speaker

6.7 Removing the SpO2 PCB and SpO2 Controller PCB

6.8 Removing the Communications PCB

6.9 Removing the ECG PCB and ECG Controller PCB

6.10 Removing the UIF PCB and Display PCB

6.11 Control Knob Assembly Replacement

6.12 Lithium Battery Replacement

6.13 Reassembly

6.1 INTRODUCTION

The N-3000 can be disassembled down to all major component parts, including:

• PCBs

• batteries

• cables

• function buttons

• chassis enclosures The following tools are required:

• small, Phillips-head screwdriver

• medium, Phillips-head screwdriver

• needle-nose pliers or 1/4-inch socket

• 7/16-inch socket

• 7/16-inch torque wrench, 10 inch-pounds (1.13 newton-meters); required only when replacing knob

WARNING: Before attempting to open or disassemble the N-3000, disconnect the power cord from the N-3000.

Caution: Observe ESD (electrostatic discharge) precautions when working within the unit.

Caution: Remove the battery before disassembling the unit.

Note: Some spare parts have a business reply card attached. When you

receive these spare parts, please fill out and return the card.

6-1

Section 6: Disassembly Guide

6.2 REMOVING THE BATTERY Caution: If it is necessary to apply AC power while the battery cover is

removed, do not connect the SPS or PSS power supply to the monitor while the power supply is plugged into AC power. Instead, first connect the power supply to the monitor, then connect the power supply to AC power. Misalignment of the power supply cord connector with the lower docking connector may result in damage to the monitor. (This caution does not apply when the battery cover is attached to the N-3000.)

Perform the following steps to replace the battery.

1. Turn the N-3000 OFF by pressing the ON/STANDBY button.

2. Disconnect the monitor from the SPS or PSS power supply.

3. Set the N-3000 upside down facing you, as shown in Figure 6-1.

6-2

Figure 6-1: Battery Replacement

4. Loosen the two battery cover retaining fasteners securing the battery

compartment cover.

5. Gently squeeze the battery cover sides in the middle as you swing the

cover open (it is hinged on the right with three tabs that extend into slots on the chassis).

Section 6: Disassembly Guide

6. Lift the battery out of the battery bracket, as shown in Figure 6-2. It may be

necessary to use the edge of a flat tip screwdriver to gently pry the battery loose.

7. Disconnect the power connector from the battery.

6.3 BATTERY REPLACEMENT

1. Complete the procedure in paragraph 6.2.

2. The lead-acid battery is recyclable. Do not dispose of battery by placing it in

the regular trash. Dispose of properly or return to Nellcor Puritan Bennett Technical Services for disposal.

3. Connect the power connector to the new battery.

4. Position the battery into the battery bracket.

5. Replace the battery cover and tighten the retaining fasteners.

6. Turn the monitor on and verify proper operation. Note: If the replacement battery is low on charge, the BATTERY CHARGING

indicator may not light if the monitor is off and connected to AC power. If that is the case, turn the N-3000 on to begin charging.

Figure 6-2: Removing the Battery

6-3

Section 6: Disassembly Guide

6.4 FUSE REPLACEMENT

1. Complete the procedure in paragraph 6.2.

2. Replace the fuses as shown in Figure 6-3 with equivalent replacements.

3. Reinstall the battery and battery cover.

Caution: The battery fuse (F2) on the Docking Connector PCB must be removed before disconnecting the docking connector cable from connector J13 as indicated in paragraph 6.5. Failure to remove the fuse may result in damage to the Lower Docking Connector PCB or UIF PCB.

6.5 MONITOR DISASSEMBLY

1. Complete the procedure in paragraph 6.2.

2. Remove the four corner screws that hold the monitor together (Figure 6-4).

Figure 6-3: N-3000 Fuses

6-4

Figure 6-4: N-3000 Corner Screws

Section 6: Disassembly Guide

3. Pull the carrying handle down to the right.

4. Pull the unit apart, swinging the bottom half to your left, as illustrated in

Figure 6-5.

Figure 6-5: Opening the N-3000 Monitor

Caution: The battery fuse (F2) on the Docking Connector PCB must be removed as indicated in paragraph 6.4 before disconnecting the docking connector cable from connector J13. Failure to remove the fuse may result in damage to the Lower Docking Connector PCB or UIF PCB.

5. The docking connector cable is plugged into connector J13 on the UIF PCB.

Disconnect the docking connector cable from connector J13 by gently pushing the top of the connector down, while pulling straight up on the cable.

6.5.1 Communications Board Switch Settings

1. To change the switch settings on the Communications PCB, complete steps

1 through 4 in paragraph 6.5.

2. The switch settings on the Communications PCB are shipped for RS-232

communications and should be as follows (refer to Figure 6-5):

SW1 - Positions 1, 3, 5, and 7 = ON; Positions 2, 4, and 6 = OFF SW2 - Positions 2, 4, and 6 = ON; Positions 1, 3, 5, and 7 = OFF SW3 - Position 1 = ON; Position 2, 3, and 4 = OFF Jumper J6 in “IGND” position.

6-5

Section 6: Disassembly Guide

If a continuous 3.3 volt signal at pin 6 of the serial port (Figure 3.3) is required (as when using the SOC-3 adapter), change the SW3 settings as follows:

SW3 - Position 1 = OFF; Position 2, 3, and 4 = ON If RS-422 settings are required, change SW1 and SW2 as follows: SW1 - Positions 1, 3, 5, and 7 = OFF; Positions 2, 4, and 6 = ON

SW2 - Positions 2, 4, and 6 = OFF; Positions 1, 3, 5, and 7 = ON SW3 - Position 1 = ON; Position 2, 3, and 4 = OFF

6.6 REMOVING THE ALARM SPEAKER

1. Complete the procedure in paragraph 6.5.

2. Remove the handle and spring assembly on the right side of the unit, as

illustrated in Figure 6-6, lifting it up out of the molded chassis cradle.

Figure 6-6: Handle, Left Side Panel, and Speaker Disassembly

3. Remove the left side panel (this is on your right, as illustrated above) by

pulling straight up; be careful not to damage speakers.

4. Remove the alarm speaker cable by lifting up from connector J2 on the UIF

PCB.

6.7 REMOVING THE SPO2 PCB AND SPO2 CONTROLLER PCB

1. Complete the procedure in paragraph 6.5.

6-6

Section 6: Disassembly Guide

6-7

Section 6: Disassembly Guide

2. Remove the rear panel, rear-panel insulator, and NEW

PATIENT/NEONATAL button by lifting up and rotating out of the chassis channel guides as illustrated in Figure 6-7.

Figure 6-7: Rear Panel and SpO2 Module Disassembly

3. Remove the SpO2 PCB and the SpO2 Controller PCB by disconnecting

them from the Pemm studs on the UIF PCB. Pull up on the top board from the right side to disconnect from the Pemm studs.

4. To remove the SpO2 PCB from the SpO2 Controller PCB, unsnap the SpO2

PCB from the Pemm studs on the SpO2 Controller PCB.

6.8 REMOVING THE COMMUNICATIONS PCB

1. Complete the procedures in paragraph 6.6 and step 2 of paragraph 6.7.

6-8

Section 6: Disassembly Guide

2. Using a 1/4 inch socket or needle-nose pliers, remove the Communications

PCB by removing the four 1/4-inch nuts that secure it to the UIF PCB (Figure 6-8). After removing the nuts, lift straight up.

Figure 6-8: Communications PCB Removal

6.9 REMOVING THE ECG PCB AND ECG CONTROLLER PCB

Note: The ECG PCB also contains the respiration circuitry.

1. Complete the procedure in paragraph 6.5.

2. Remove the rear panel, rear-panel insulator, and NEW

PATIENT/NEONATAL button by lifting up and rotating out of the chassis channel guides as illustrated in Figure 6-7.

3. Remove the ECG PCB and the ECG Controller PCB by disconnecting them

from the Pemm studs on the UIF PCB. Pull up on the top board from the right side to disconnect from the Pemm studs.

4. To remove the ECG PCB from the ECG Controller PCB, unsnap the ECG

PCB from the Pemm studs on the ECG Controller PCB.

6.10 REMOVING THE UIF PCB AND DISPLAY PCB

1. Complete the procedures in paragraphs 6.7, 6.8, and 6.9.

2. Remove the right-side panel by lifting it straight up.

3. Remove the front-panel bezel by gently lifting it up and rotating it away from

the Display PCB as illustrated in Figure 6-9.

6-9

Section 6: Disassembly Guide

The display PCB is secured to the UIF PCB via the J5 connector. To remove the Display PCB, the UIF PCB must first be loosened to allow the Display PCB to be lifted out of the molded chassis housing slots.

Figure 6-9: Display PCB and UIF PCB Disassembly

4. Using a Phillips-head screwdriver, remove the six screws securing the UIF

PCB to the chassis.

5. Remove the Display PCB by lifting up on the mother board, then pulling the

Display PCB away from the UIF PCB and disconnecting from J5.

6. Disconnect the control knob ribbon cable from J3 on the UIF PCB. Push the

top of the connector down, then pull the cable straight up and out of the connector.

7. Lift the UIF PCB out of the chassis housing.

6.10.1 Installing a Replacement UIF PCB

Complete the following procedure after replacing a UIF PCB.

1. Power-up in the service mode as described in paragraph 4.3. The number

“5” in the SpO2% display indicates that menu item 5 (paragraph 4.3.5) has been accessed. The number “07” flashes in the HEART/PULSE RATE display.

6-10

2. Press the UPPER ALARM LIMIT button to accept the ICC value of “07,”

indicating that the unit is an SpO2 unit with ECG capabilities.

3. Turn the unit off. The N-3000 is ready for normal operation.

4. Replace the Instrument Identification label by attaching it to the enclosure

on the bottom of the unit. Confirm the IID number using the service mode menu item 17.

6.11 CONTROL KNOB ASSEMBLY REPLACEMENT

1. Complete the procedure in paragraph 6.10. The top cover appears as

illustrated in Figure 6-10.

Section 6: Disassembly Guide

Figure 6-10: Knob Encoder Disassembly

2. Turn the cover right-side-up and use a small, flat blade to gently pry the

knob off the shaft (Figure 6-11). Use caution to avoid nicking or denting the surrounding top cover.

6-11

Section 6: Disassembly Guide

3. Using a 7/16-inch socket, remove the nut securing the shaft and knob

Figure 6-11: Knob Disassembly

assembly to the chassis.

4. Replace the control knob assembly with the elastomeric washer closest to

the plastic chassis. Torque nut to 10 inch-pounds. Replace the heat shield and white plastic insulator as illustrated in Figure 6-10.

6.12 LITHIUM BATTERY REPLACEMENT

1. Disconnect AC line voltage from the monitor.

2. With the monitor upside down and facing you, open up the chassis as

shown in Figure 6-5.

3. Locate the lithium batteries on the UIF PCB (Figure 6-9). The backup

lithium battery (the larger of the two lithium batteries) is used to supply backup power to the UIF processor if the lead-acid battery fails during DC use. It also supplies power to the piezo power loss alarm speaker during a microprocessor or power failure alarm. The other (smaller) battery provides additional voltage to power the piezo speaker.

4. Slide battery (or batteries) from underneath the spring clips. Do not dispose

of lithium batteries by placing them in the regular trash. Dispose of properly or return to Nellcor Puritan Bennett Technical Services for disposal.

5. Replace batteries, observing correct polarity (positive terminal up). Ensure

that they are secure.

6. Reassemble the chassis.

6.13 REASSEMBLY

6-12

Reassemble the monitor by performing the disassembly steps in reverse order.

1. Ensure that all plastic isolation shields are reinstalled correctly.

Section 6: Disassembly Guide

2. Ensure that the small wiper fingers that make contact with the side- panel

metalized coating throughout the top chassis fit properly.

3. Ensure that all buttons are seated properly and operate smoothly.

4. All of the side panels have channel guides molded into the top and bottom

chassis to assist in proper location and seating.

5. To install the handle, locate the small spring attached to one side. After all

PCBs and side panels have been properly seated in the top chassis, install the handle into the cradle in a vertical position. Guide the spring into the molded channel located at the rear of the top chassis while leaning the handle to the inside of the unit. When properly seated, the handle will rotate out with a small amount of spring tension and naturally return to the vertical resting position.

6. Depending upon the level of repairs, you may have to reconfigure the

monitor’s Internal Configuration Code (ICC) in order to get the monitor to operate properly. Refer to the service mode section, menu item 21, of this manual.

6-13

SECTION 7: SPARE PARTS

7.1 Introduction

7.1 INTRODUCTION

Spare parts, along with part numbers, are shown below. Item numbers in parentheses correspond to the callout numbers in Figure 7-1.

Item No. Description Part No.

1 Cover, battery 031763 2 Battery, lead-acid, 12V-2Ah 640115 3 Bracket, battery 030487 4 Cover, bottom, monitor 031646 5 Handle, carrying 030783 6 Panel, left, speaker mount 030067 7 Gasket, speaker 032994 8 Speaker, with lead, connector and insulator 033115 9 PCB, communications, EPP SP033961 11 Battery, lithium, small (3V, 12mm) 640112 12 Battery, lithium, large (3V, 23mm) 642002 13 PCB, ECG SP033777 14 PCB, ECG controller SP031802 15 Cover, top, without metal shield 024897 16 PCB, display SP045985 18 Panel, front, lens, NA, with ECG/Resp 033309 20 Buttons, set of 2, on/standby, print, NA 030524 21 Buttons, set of 2, alarm limit 030711 22 Knob, control 024138 23 Encoder, with flexible type cable, optical 291169 25 Panel, right, with ECG, NA 033121 26 PCB, UIF SP034971 27 PCB, SpO2 controller SP033274 28 Panel, rear 030065 29 PCB, SpO2 SP030063 34 Clip, grounding 031517 35 Button, audible alarm off 031853 36 Cable, 012 CKT, docking connector 030581 37 Gasket, rubber, SpO2 030974 38 Button, new patient/neonatal 023301 39 Insulator, ECG PCB/ECG Controller PCB, white 032974 40 PCB, docking connector SP030221 not pictured SPS-N1 power supply, North American 033877 not pictured NPC-NA power cord, North American 071505 not pictured OXISENSOR II assortment pack ASP3 not pictured Cable, EIA-232, serial interface 030604 not pictured Cable, input, sensor SCP10 not pictured Fuse, 1.0A, type-T, 250V, 5x20 mm 691208 not pictured Fuse, 2.5A, type-T, 250V, 5x20 mm 691311

Section 7: Spare Parts

7-1

Section 7: Spare Parts

Figure 7-1 shows the N-3000 expanded view with numbered callouts relating to the spare parts list.

7-2

Figure 7-1: N-3000 Expanded View

SECTION 8: PACKING FOR SHIPMENT

8.1 General Instructions

8.2 Repacking in Original Carton

8.3 Repacking in a Different Carton

To ship the monitor for any reason, follow the instructions in this section.

8.1 GENERAL INSTRUCTIONS

Pack the monitor carefully. Failure to follow the instructions in this section may result in loss or damage not covered by the Nellcor Puritan Bennett warranty. If the original shipping carton is not available, use another suitable carton; North American customers may call Nellcor Puritan Bennett Technical Services to obtain a shipping carton.

Prior to shipping the monitor, contact your supplier or the local Nellcor Puritan Bennett office (Technical Services Department) for a returned goods authorization number. Mark the shipping carton and any shipping documents with the returned goods authorization number.

8.2 REPACKING IN ORIGINAL CARTON

If available, use the original carton and packing materials. Pack the monitor as follows:

1. Place the monitor and, if necessary, accessory items in original packaging.

Figure 8-1: Repacking the N-3000

2. Place in shipping carton and seal carton with packaging tape.

8-1

Section 8: Packing for Shipment

3. Label carton with shipping address, return address and RGA number, if

applicable.

8.3 REPACKING IN A DIFFERENT CARTON

If the original carton is not available, use the following procedure to pack the N-3000:

1. Place the monitor in a plastic bag.

2. Locate a corrugated cardboard shipping carton with at least 200 pounds per

square inch (psi) bursting strength.

3. Fill the bottom of the carton with at least 2 inches of packing material.

4. Place the bagged unit on the layer of packing material and fill the box

completely with packing material.

5. Seal the carton with packing tape.

6. Label the carton with the shipping address, return address, and RGA

number, if applicable.

8-2

Nellcor N-3000 User manual

Specifications and Main Features

Frequently Asked Questions

User Manual