Accutorr V Service Manual

Table of Contents

Preface ... v Warnings, Cautions, and Notes ... vii Warnings ... vii Cautions ... viii Notes ... x Safety Designations... x Product Limitations ... xi Unpacking ... xi Symbols and Descriptions ... xii

Theory of Operation ... 1 - 1 Introduction ...1 - 2 Controls and Indicators...1 - 2 System Overview ...1 - 2 Hardware Structure ...1 - 4 Main Board ...1 - 5 Power Board...1 - 6 Key and Displays Board ...1 - 7 Parameter Boards ...1 - 8 SpO2 Module ...1 - 8 NIBP Module ...1 - 9 Optional Temperature Module ...1 - 9 Recorder ...1 - 10 Bar Code Scanner ...1 - 11

Specifications... 2 - 1 Introduction ...2 - 2 NIBP Measurement ...2 - 2 Blood Pressure ...2 - 2 Static Accuracy ...2 - 2 Maximum Cuff Pressure ...2 - 2 Cuff Inflation ...2 - 3 Maximum Leakage ...2 - 3 Deflation Rate ...2 - 3 Update Period...2 - 3 Initial NIBP Pressure Setup and Range...2 - 3 NIBP Measurement Cycle...2 - 4 Cuff Inflation Time...2 - 4 Cuff Pressure Automatic Check Algorithm ...2 - 4 Automatically Adjusted Inflation Value after First Measurement...2 - 5 Pulse Rate ...2 - 5 SpO2 Measurement ...2 - 6 DPM SpO2 Module Performance...2 - 6 SpO2 ...2 - 6 Pulse Rate ...2 - 6 Alarm setting range ...2 - 6 Masimo MS-2013 SpO2 Performance...2 - 7 SpO2 ...2 - 7 Pulse Rate ...2 - 8 Alarm Setting Range ...2 - 8 Nellcor NELL-3 SpO2 Performance...2 - 9 SpO2 ...2 - 9 Pulse Rate ...2 - 9 Alarm Setting Range ...2 - 9

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Temperature ...2 - 10 Display Area, Indicator, and Controller ...2 - 10 Display Area...2 - 10 LCD ...2 - 10 7-Segment Digit Display ...2 - 10 Monochrome LED Indicator ...2 - 10 Power Indicator ...2 - 11 Overlay and labeling ...2 - 11 Alarm Lamp ...2 - 11 Keys ...2 - 12 Patient Cable Connectors ...2 - 13 Audio Indicator ...2 - 13 Pulse Tone Function...2 - 13 Multiple-Level Volume...2 - 13 Real-time Clock...2 - 13 Standby Mode ...2 - 14 Alarm Information ...2 - 15 Basics ...2 - 15 Alarm Notification ...2 - 15 Audio Alarm Pause, Audio Alarm Off, and Audio Alarm Silencing ...2 - 15 Configuration management...2 - 15 Barcode scanner...2 - 15

Troubleshooting... 3 - 1 Introduction ...3 - 2 Part Replacement ...3 - 2 Monitor Status Check ...3 - 2 Technical Alarm Check ...3 - 3 Troubleshooting Guide ...3 - 4 Power On/Off Failures ...3 - 4 Display Failure ...3 - 4 LED Digital Display and Indication Lamp Failure ...3 - 4 Alarm Problems ...3 - 5 Key Failure ...3 - 5 Recorder Failures...3 - 6 Interface Failures ...3 - 6 Power Supply Failures ...3 - 6 Network Related Problems ...3 - 7 Software Upgrade Problems ...3 - 8 Bar Code Scanner Failures ...3 - 8 NIBP Measurement Failures ...3 - 9 SpO2 Measurement Failure ...3 - 9 Temperature Measurement Failures ...3 - 9

Repair and Disassembly ... 4 - 1 Tools ...4 - 2 Preparation for Disassembly ...4 - 2 Disassembly ...4 - 3 Separating the Front and Rear Halves of the Monitor ...4 - 3 Disassembling the Front Housing Assembly ...4 - 6 Removing the Main Rack Assembly...4 - 8 Removing NIBP Module ...4 - 11 Removing the Main (CPU) Board ...4 - 12 Removing the Power Board ...4 - 13

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Removing the Battery Connector Assembly...4 - 13 Removing the Fan and Speaker ...4 - 14 Removing the Power Socket ...4 - 15 Disassembling the Temperature Module...4 - 16 Disassembling SpO2 Modules ...4 - 17 Disassembling a DPM SpO2 module ...4 - 17 Disassembling a Masimo SpO2 module ...4 - 17 Disassembling a Nellcor SpO2 module ...4 - 18 Disassembling the NIBP Module ...4 - 19 Removing the NIBP Pump ...4 - 19 Removing the NIBP Dump Valve ...4 - 19 Removing the NIBP Bleed Valve ...4 - 20

Parts ... 5 - 1 Main Assembly...5 - 2 Front Assembly ...5 - 3 Rear Housing Assembly ...5 - 7 Main Bracket Assembly ...5 - 8 NIBP Assembly (Pump M6Q-100003- - -) ...5 - 10 NIBP Assembly (Pump 082-000056-00) ...5 - 13 Temperature Module Subassembly ...5 - 16 Temperature Power Module Subassembly ...5 - 18

Test and Calibration... 6 - 1 Introduction ...6 - 2 Test Report...6 - 3 Recommended Frequency ...6 - 3 Visual Test...6 - 4 Power-on Test ...6 - 4 NIBP Calibration...6 - 4 NIBP Accuracy Test ...6 - 8 NIBP Leakage Test ...6 - 9 SpO2 Test ...6 - 12 SpO2 Test Under Normal Conditions ...6 - 12 SpO2 Test in Motion Mode ...6 - 12 Summary of Test Methods ...6 - 13 DPM SpO2 ...6 - 13 Nellcor SpO2 ...6 - 13 Masimo SpO2 ...6 - 13 Testing the Optional Temperature Module...6 - 14 Nurse Call Performance Test ...6 - 16 Bar Code Scanner Test ...6 - 18 Electrical Safety Tests ...6 - 20 Enclosure Leakage Current Test ...6 - 20 Earth Leakage Current Test ...6 - 20 Patient Leakage Current Test ...6 - 21 Patient Auxiliary Leakage Current Test...6 - 21 Recorder Check ...6 - 22 Software upgrade ...6 - 23

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Preface

Introduction

Preface This manual provides detailed information about the assembling, disassembling, testing, and troubleshooting of the equipment to support effective troubleshooting and repair. It is not intended to be a comprehensive, in-depth explanation of the product architecture or technical implementation. Observance of the manual is a prerequisite for proper equipment maintenance and prevents equipment damage and personnel injury. Refer to the Accutorr V Operating Instructions: P/N 0070-00-0699-XX for information for operating this instrument. This manual is based on the maximum configuration. Therefore, some contents may not be applicable. For questions, contact Service. This manual is for biomedical engineers, authorized technicians, or service representatives responsible for troubleshooting, repairing, and maintaining the monitors. Contents of this manual are subject to change without prior notice. A password is required to access the service mode. The service password is 321. The Accutorr V configurations are: • Accutorr V with Nellcor® Pulse Oximetry- includes NIBP, Nellcor SpO2, a Trend Display, and Recorder • Accutorr V with Nellcor® Pulse Oximetry and SmarTemp™- includes NIBP, Nellcor SpO2, SmarTemp, a Trend Display, and Recorder • Accutorr V with Masimo SET® Pulse Oximetry- includes NIBP, Masimo SpO2, a Trend Display, and Recorder • Accutorr V with Masimo SET® Pulse Oximetry and SmarTemp™- includes NIBP, Masimo SpO2, SmarTemp, a Trend Display, and Recorder • Accutorr V with DPM Pulse Oximetry- includes NIBP, DPM SpO2, a Liquid Crystal Display (LCD), and Recorder • Accutorr V with DPM Pulse Oximetry and SmarTemp™- includes NIBP, DPM SpO2, SmarTemp, a Liquid Crystal Display (LCD), and Recorder All Accutorr V configurations can be upgraded with a barcode scanner. Masimo Patents: This device (MASIMO SpO2 Module) is covered under one or more of the following U.S. Patents 5,758,644, 5,823,950, 6,011,986, 6,157,850, 6,263,222, 6,501,975, and other applicable patents listed at: www.masimo.com/patents.htm. Possession or purchase of this device does not convey any express or implied license to use the device with replacement parts which would, alone, or in combination with this device, fall within the scope of one or more of the patents relating to this device.

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Introduction

Preface

Nellcor Patents: This device (Nellcor SpO2 Module) is covered under one or more of the following U.S. Patents Patent No. 5,485,847, 5,676,141, 5,743,263, 6,035,223, 6,226,539, 6,411,833, 6,463,310, 6,591,123, 6,708,049, 7,016,715, 7,039,538, 7,120,479, 7,120,480, 7,142,142, 7,162,288, 7,190,985, 7,194,293, 7,209,774, 7,400,919, and 7,212,847. Possession or purchase of this device does not convey any express or implied license to use the device with replacement parts which would, alone, or in combination with this device, fall within the scope of one or more of the patents relating to this device.

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Warnings, Cautions, and Notes

Introduction

Warnings, Cautions, and Notes Read and adhere to all of the warnings and cautions listed throughout this manual. A WARNING is provided to alert the user to potentially serious outcomes (death, injury or serious adverse events) to the patient or the user. A CAUTION is provided to alert the user that special care should be taken for the safe and effective use of the device. They will include actions to be taken to avoid effects on patients or users that will not be potentially life threatening or result in serious injury, but about which the user should be aware. A NOTE is provided when additional general information is available.

Warnings WARNING: Internal Electrical Shock Hazard - This unit does not contain any user-serviceable parts. Do not remove instrument covers. Refer servicing to qualified personnel. When the integrity of the protective earth conductor, in the installation or its arrangement, is in doubt, the equipment should be operated from its internal battery. Observe all CAUTION and WARNING labels on the unit. WARNING: Possible explosion hazard. Do not operate machine near flammable anesthetic agents or other flammable substances. Do not use flammable anesthetic agents (i.e., ether or cyclopropane.) WARNING: Always place the unit on a flat, rigid surface or onto a Mindray approved stable mounting bracket. WARNING: To ensure proper performance and safety and to prevent the voiding of the warranty, only use authorized parts and accessories with the Accutorr V. Use of unauthorized accessories may result in erroneous readings. WARNING: Use only cuffs with approved quick connect type connectors. WARNING: The Accutorr V is not intended for use in a magnetic resonance imaging (MRI) environment and may interfere with MRI procedures. WARNING: Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturers instructions and local regulations. Batteries used in this device may present a risk of fire or chemical burn if mistreated. Do not incinerate battery, possible explosion may occur. WARNING: Do not use a damaged or broken unit or accessory. WARNING: Operation of the Accutorr V below the minimum amplitude or value of patient physiological signal may cause inaccurate results.

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Introduction

Cautions

WARNING: Use of accessories, transducers, and cables other than those specified in the manual may result in increased Electromagnetic Emissions or decreased Electromagnetic Immunity of the Accutorr V. It can also cause delayed recovery after the discharge of a cardiac defibrillator. WARNING: Perform the decontamination or cleaning process with the unit powered down and power cord removed. WARNING: Electrical safety tests are a proven means of verifying the electrical safety of the monitor. They are intended for determining potential electrical hazards. Failure to identify these hazards in a timely manner may cause personnel injury. WARNING: Commercially available test equipment such as a safety analyzer can be used for electrical safety tests. Verify that the test equipment can be safely and reliably used with the monitor before use. The service personnel should acquaint themselves with the use of the test equipment. WARNING: Electrical safety tests should meet the requirements of the latest editions of EN 60601-1 and UL 60601. WARNING: These electrical safety tests do not supersede local requirements. WARNING: All devices using the AC mains and connected to medical equipment within patient environments must meet the requirements of the IEC 60601-1-1 medical electrical systems standard and should be put under electrical safety tests at the frequency recommended for the monitor.

Cautions

viii

CAUTION:

Observe extreme caution when a defibrillator is in use. Do not touch any part of the patient, table, or monitor when a defibrillator is in use. The Accutorr V should not be used adjacent to or stacked with other equipment. If adjacent or stacked use is necessary, the Accutorr V should be observed to verify normal operation in the configuration in which it will be used.

CAUTION:

The unit should be checked periodically for obstructed vents. If an obstruction is found, refer the unit to qualified service personnel.

CAUTION:

At the end of their life, dispose of the Accutorr V, accessories, and single use supplies in accordance with local regulations. Dispose of packaging waste in accordance with local regulations.

CAUTION:

When equipped with Nellcor® SpO2, use only Nellcor® oxygen transducers including Nellcor® Oxisensor® patient dedicated adhesive sensors. Use of other oxygen transducers may cause improper oximeter performance.

CAUTION:

When equipped with MASIMO® SpO2, use only MASIMO® oxygen transducers including MASIMO LNOP® and MASIMO LNCS® patient dedicated adhesive sensors and MASIMO PC Series Patient Cable. Use of other oxygen transducers may cause improper Oximetry performance.

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Cautions

Introduction

CAUTION:

Inaccurate readings may be caused by incorrect sensor application or use; significant levels of dysfunctional hemoglobins (i.e. carbohemoglobins or methemoglobin); or intra-vascular dyes such as indocyanine green or methylene blue; exposure to excessive illumination, such as surgical lamps (especially ones with a Xenon light source), bilirubin lamps, fluorescent lights, infrared heating lamps, or direct sunlight; excessive patient movement; venous pulsations; electro-surgical interference; and placement of a sensor on an extremity that has a blood pressure cuff, arterial catheter, or intra-vascular line.

CAUTION:

Route cables neatly. Ensure cables, hoses, and wires are kept away from patient’s neck to avoid strangulation. Keep floors and walkways free of cables to reduce risk to hospital personnel, patients, and visitors. If the sensor or patient cable is damaged in any way, discontinue use immediately.

CAUTION:

When cleaning sensors, do not use excessive amounts of liquid. Wipe the sensor surface with a soft cloth, dampened with the cleaning solution. To prevent damage, do not soak or immerse the sensor in any liquid solution. DO NOT ATTEMPT TO STERILIZE.

CAUTION:

Recharge the Lithium ion battery while in the unit at room temperature. If using the Accutorr V in a hot environment, the Lithium ion battery may not charge when the unit is connected to the AC mains.

CAUTION:

Remove the battery if the Accutorr V is not used for an extended period of time.

CAUTION:

The Communications Connectors on the Accutorr V are only for use with IEC 60601-1-1 compliant equipment.

CAUTION:

Never place fluids on top of this monitor. If fluid spills on the unit, wipe clean immediately and refer the unit to qualified service personnel.

CAUTION:

Before disassembling the monitor, eliminate static charges. When disassembling the parts labeled with static-sensitive symbols, wear electrostatic discharge protection such as antistatic wristband or gloves. Follow the correct sequence to disassemble the monitor. Otherwise, the monitor may be damaged permanently. Disconnect all the cables before disassembling any parts. Take care not to damage any cables or connectors.

CAUTION:

Properly connect the cables or wires when reassembling the monitor to avoid short circuit. When assembling the monitor, select proper screws. If the wrong size screw is tightened by force, the monitor may be damaged and the screw or the part may not function as expected.

CAUTION:

All tests should be performed by qualified personnel only.

CAUTION:

Disconnect the monitor from the patient and make sure that important data is saved before upgrading the monitor.

CAUTION:

Do not shut down or power off the equipment when upgrading the bootstrap program. Otherwise, it may cause the equipment to break down.

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Notes

CAUTION:

Program upgrades should be performed by qualified service personnel only.

Notes NOTE:

The Accutorr V should be operated only by trained and qualified personnel.

NOTE:

Use disposable and single use accessories only once.

NOTE:

Place the equipment in a location where the screen can easily be seen and the operating controls can easily be accessed.

NOTE:

The instructions in this manual are based on the maximum configuration.

NOTE:

The optional Temperature module kit must be installed only by trained personnel, and proper ESD prevention methods must be followed.

NOTE:

Only devices specified by Mindray DS USA, Inc. shall be connected the RS-232 port

NOTE:

When the RS-232 connector is used for DIAP, barcode power must be set to OFF.

NOTE:

Disconnect the Accutorr V from the mains to isolate it from the mains power during an emergency.

Safety Designations Safety designations per IEC 60601-1 Standard: Type of protection against electric shock

Class 1 with internal electric power source. Where the integrity of the external protective earth (ground) in the installation or its conductors is in doubt, the equipment shall be operated from its internal electric power source.

Degree of protection against electric shock

Monitor - Type B applied part. NIBP - Type BF defibrillation protected applied part. SpO2 - Type BF protected applied part. Temp - Type BF protected applied part. 100 – 240 VAC

Supply Connection

50/60 Hz 0.85 – 0.5 A Mode of Operation

x

Continuous

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Product Limitations

Introduction

Protection Against Hazard of Explosion

Not Protected (Ordinary)

Protection Against Ingress of Liquids

IPX1

Degree of Electrical Connection Between

Equipment designed for direct electrical and

Equipment and Patient

non-electrical connection to the patient.

Degree of Mobility

Portable

Product Limitations Non-invasive blood pressure (NIBP) accuracy depends on the application of the proper cuff size. See Chapter 3.0 of the Operating Instructions for detailed information. The Accutorr V will not operate effectively on patients who are experiencing convulsions or tremors. The Accutorr V is a portable device intended for intra-hospital use. If the pressure cuff is not placed at the patient’s heart level, the NIBP measurement may be subject to error, due to the hydrostatic effect. The pulse rate data displayed on the Accutorr V is computed from the measurement of peripheral pulses (peripheral pulses taken only during a measurement cycle). The rate measured by the Accutorr V may differ from the rate of an ECG monitor. This is because the ECG is an electrical signal that may not always result in a peripheral pulse. Administration of certain vasoconstrictor drugs (for example, norepinephrine), may reduce peripheral perfusion to a level that prevents the Accutorr V from taking pulse rate measurements. Arterial compression, tricuspid regurgitation, or other conditions may reduce perfusion to a level that prevents the Accutorr V from taking pulse rate measurements. The presence of arrhythmias may increase the time required to complete a measurement and may extend this time so that a measurement cannot complete. The Accutorr V is not intended for use during CPR. The monitor uses an oscillometric technique based on normal peripheral circulation to compute blood pressure.

Unpacking Remove the instrument from the shipping carton and examine it for signs of shipping damage. Save all packing materials, invoice, and bill of lading. These may be required to process a claim with the carrier. Check all materials against the packing list. Contact the Customer Service Department (800) 288-2121 or (201) 265-8800 for prompt assistance in resolving shipping problems. NOTE:

Accutorr V Service Manual

The Accutorr V should only be shipped in its original packing materials to avoid shipping damage.

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Introduction

Symbols and Descriptions

Symbols and Descriptions SYMBOL

DESCRIPTION

SYMBOL

DESCRIPTION

Attention, Consult Accompanying Documents /

Type BF Equipment

Refer to Manual

T1 SpO2

Equipotentiality

Defibrillator-proof Type BF

Equipotential grounding

Equipment

Alternating Current (AC)

Adult

Predictive Thermometer Connector

Pediatric/Child

SpO2 Connector

Neonate

Electrical connectors

Operating on battery power

Battery

Manufacturer

Connected to AC mains NIBP Connector

REF

xii

Power On/Off – Standby

Recycle

Serial number

Up key

Part Number

Confirm key

Patient Information key

Down key

Main menu key

Deflate Cuff key

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Symbols and Descriptions

SYMBOL

Introduction

DESCRIPTION

SYMBOL

DESCRIPTION

Set alarms key

Patient Size key

Start NIBP key

Alarm Silence key

Display Tabular Trends/Pleth Wave

NC1

NIBP interval key

SP1

Print key (front panel)

CS1

Nurse Call connector RS-232 connector (Serial Port 1) Network connector Alarm Disabled indicator on

Print key (recorder)

LCD display

Alarm Silenced indicator on

Audio Alarm Off indicator on

LCD display

LCD display

Classified by Underwriters Laboratories Inc. with respect to electric shock, fire and mechanical hazards, only in accordance with UL 60601-1, CAN/CSA C22.2 NO.601-1, IEC 60601-1-1, IEC 60601-2-30, IEC 60601-2-49.

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Symbols and Descriptions

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1.0

Theory of Operation

Introduction... 1-2 Controls and Indicators ... 1-2 System Overview... 1-2 Hardware Structure... 1-4

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1-1

Introduction

1.1

Theory of Operation

Introduction The Accutorr V monitors the following patient vital signs: non-invasive blood pressure (NIBP), pulse oxygen saturation (SpO2), pulse rate (PR), and temperature (Temp) for a single adult, pediatric, or neonatal patient. Temperature is measured using the optional Temperature Module.

1.2

Controls and Indicators For information on controls, connectors, and indicators, refer to the Accutorr V Operating Instructions, Part Number 0070-10-0699-02.

1.3

System Overview FIGURE 1-1 shows the relationship of the Accutorr V monitoring system’s mechanical, hardware, and software components. FIGURE 1-2 shows the Accutorr V monitoring system’s PC board connections. SYSTEM

MECHANICAL

HARDWARE

SOFTWARE

MAIN UNIT

MAIN BOARD

SYSTEM SOFTWARE

RECORDER

POWER BOARD

PARAMETER SOFTWARE

BATTERY CHAMBER

KEY & DISPLAY

UPGRADE SOFTWARE

TEMP MODULE CHAMBER

PARAMETER BOARDS

PRINT SOFTWARE

BARCODE SCANNER SUPPORT

RECORDER BOARD

GATEWAY SOFTWARE

BARCODE SCANNER

FIGURE 1-1 System Mechanical, Hardware, and Software Overview

1-2

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Theory of Operation

System Overview

PARAMETER RECEPTACLE

J2 TEMP

NIBP

J2

J4

J2

J6

P2

J4

J2

ISOLATION POWER BOARD P1

ISOLATION POWER BOARD J3

J2

J3

J4

RECORDER

J2

J1 SpO2

J5

J1

J1

MAIN BOARD J7

J8

P3

P4

J9

J10

J11

J12

J13

POWER

J5

P2

AC INLET

FAN

BATTERY LCD

BDM PORT

SPEAKER

NETWORK CONNECTOR

J4

P5

J6

J3

KEY & DISPLAY BOARD

RS232

NURSE CALL

FIGURE 1-2 The System PCBA Connections

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1-3

Hardware Structure

1.4

Theory of Operation

Hardware Structure FIGURE 1-3 shows the Accutorr V’s Hardware Structure. The core of the system is the main board, which supplies power for all parameter modules. The parameter modules directly communicate with the main board. The the main board processes measurements and the status of all modules, and displays them through the key and display board.

NIBP MODULE

SpO2 MODULE

TEMP MODULE

ISOLATION POWER BOARD

ISOLATION POWER BOARD

COMMUNICATIONS /POWER SUPPLY

COMMUNICATIONS /POWER SUPPLY

LED & KEY KEY & DISPLAY BOARD

ETHERNET

LCD

MAIN BOARD

RS232

POWER SUPPLY

SPEAKER

NURSE CALL

RECORDER

BATTERY FAN

POWER BOARD AC

ACCUTORR V FIGURE 1-3 The Accutorr V’s Hardware Structure NOTE:

1-4

The SpO2 isolation power board does not apply to models with DPM Pulse Oximetry.

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Theory of Operation

1.4.1

Hardware Structure

Main Board FIGURE 1-4 shows the main board, which provides resources and support for the overall system. It controls the LCD, LED, keyboard, speaker, and recorder. It also communicates with parameter modules and connectors. The main board also controls communication with the speaker, the recorder, and all external connectors.

WATCHDOG RTC

ETHERNET

PHY RTL8201

CPU

NURSE CALL SPEAKER

E2 PROM

SERIAL PORT 0 RS232 IC

AUDIO PROCESS CIRCUIT

SERIAL PORT 1: NIBP

SDRAM

SERIAL PORT 2: SpO2

FLASH

SERIAL PORT 3: TEMP

FPGA

1.5V

SERIAL PORT 4: RECORDER

LINEAR POWER

3.3V

RS232

5.0V

12V

LCD

LED

KEY

FIGURE 1-4 Main Board Principle Diagram The main board communicates with all parameter modules and the recorder through an FPGA extended serial port. The main board supplies information using FPGA to the key and display board. It drives the display, detects the keys, and implements the user interface. The main board controls the alarm indicator using FPGA. The main board controls the speaker to give audible alarms, key tones, and Pitch Tone. The main board provides the nurse call connection, network connection, and R232 connection. The real-time clock is implemented by the RTC chip. The RT clock is powered by the AC mains, battery, or button cell on the main board. The button cell ensures the continuous working of the clock in the event that the AC mains and batteries are not available. SDRAM stores running program instructions and data temporarily. The system memory and trend data memory is flashed. The device configuration memory is EEPROM.

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