DRE Waveline EZ User manual

DRE Waveline EZ
Service Manual

SERVICE MANUAL
Waveline EZ
Patient Monitor
Caution:Federal law (U.S.A.) restricts this device to sale by or on the order of a physician.
© 2010 DRE, Inc. All rights reserved. Ver 1.0,Issued date: Dec 28, 2010

DRE Inc.
Website: www.dremed.com
Address: 1800 Williamson Court
Louisville, KY 40223 USA
Toll Free (US call only): 502-244-4444
To obtain information about a warranty, if any, for this product, contact DRE Technical Services or your
local DRE representative.

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TABLE OF CONTENTS
SECTION 1: INTRODUCTION....................................................................................................................... 4
1.1 MANUAL OVERVIEW ........................................................................................................................... 4
1.2 WARNINGS, CAUTIONS AND NOTES................................................................................................ 4
1.3 Waveline EZ PATIENT MONITOR DESCRIPTION............................................................................. 4
1.4 RELATED DOCUMENTS....................................................................................................................... 5
SECTION 2: INTRODUCTION AND SYSTEM DESCRIPTION.............................................................. 6
2.1 SYSTEM OVERVIEW ............................................................................................................................. 6
2.2 SYSTEM BLOCK DIAGRAM................................................................................................................. 6
2.2.1 POWER SYSTEM......................................................................................................................7
2.2.1.1 PIN ASSIGNMENT AND DESCRIPTION FOR AC-DC MODULE .............................................8
2.2.1.2 PIN ASSIGNMENT AND DESCRIPTION FOR DC-DC MODULE .............................................9
2.2.1.3 DC-DC MODULE TEST POINTS ...........................................................................................11
2.2.2 MAINBOARD (ARM-FPGA SYSTEM ， ERT MODULE （ ECG, RESP, TEMP,SPO2 ） ) ...........11
2.2.2.1 PIN ASSIGNMENT AND DESCRIPTION FOR MAINBOARD .................................................12
2.2.2.2 MAINBOARD TEST POINTS .................................................................................................12
2.2.2.3 FPGA .........................................................................................................................................13
2.2.2.4 ARM (ADVANCED RISC MACHINE) ........................................................................................13
2.2.2.5 ERT MODULE （ ECG, RESP, TEMP, SPO2 ） ........................................................................14
2.2.3 NIBP MODULE.........................................................................................................................15
2.2.3.1 PIN ASSIGNMENT AND DESCRIPTION FOR NIBP MODULE..................................18
2.2.4 SPO2 MODULE........................................................................................................................18
2.2.5 DISPLAY....................................................................................................................................19
2.2.5.1 PIN ASSIGNMENT FOR TFT LCD PANEL DRIVING...................................................19
2.2.6 KEYBOARD (SWITCHES).....................................................................................................21
2.2.7 TOUCH PANEL ........................................................................................................................21
2.2.8 SPEAKER..................................................................................................................................22
2.2.9 RECORDER..............................................................................................................................22
2.2.9.1 PIN ASSIGNMENT FOR RECORDER MODULE ..........................................................23
2.2.10 RS-232.....................................................................................................................................24
SECTION 3: PERFORMANCE VERIFICATION ...................................................................................... 25
3.1 INTRODUCTION................................................................................................................................... 25
3.2 EQUIPMENT NEEDED......................................................................................................................... 25

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3.3 PERFORMANCE TESTS....................................................................................................................... 25
3.3.1 BATTERY CHARGE................................................................................................................26
3.3.2 BATTERY PERFORMANCE TEST......................................................................................26
3.3.3 POWER-ON SELF-TEST .......................................................................................................26
3.3.4 HARDWARE AND SOFTWARE TESTS .............................................................................27
3.3.5 OPERATION WITH A HUMAN SUBJECT..........................................................................28
3.4 SAFETY TESTS...................................................................................................................................... 28
SECTION 4: ROUTINE MAINTENANCE................................................................................................... 33
4.1 CLEANING............................................................................................................................................. 33
4.2 PERIODIC SAFETY AND FUNCTIONAL CHECKS.......................................................................... 33
4.3 BATTERY............................................................................................................................................... 33
4.4 ENVIRONMENTAL PROTECTION .................................................................................................... 34
SECTION 5: DISASSEMBLY GUIDE......................................................................................................... 35
5.1 INTRODUCTION................................................................................................................................... 35
5.2 HOW TO USE THIS SECTION.............................................................................................................. 36
5.3 DISASSEMBLY FLOW CHARTS ........................................................................................................ 36
SECTION 6: PARTS...................................................................................................................................... 39
6.1 INTRODUCTION................................................................................................................................... 39
SECTION 7: TROUBLESHOOTING........................................................................................................... 42
7.1 INTRODUCTION................................................................................................................................... 42
7.2 HOW TO USE THIS SECTION.............................................................................................................. 42
7.3 WHO SHOULD PERFORM REPAIRS ................................................................................................. 42
7.4 REPLACEMENT LEVEL SUPPORTED .............................................................................................. 42
7.5 OBTAINING REPLACEMENT PARTS ............................................................................................... 42
7.6 TROUBLESHOOTING GUIDE............................................................................................................. 43
SECTION 8: PACKING FOR SHIPMENT ................................................................................................. 49
8.1 GENERAL INSTRUCTIONS................................................................................................................. 49
8.2 REPACKING IN ORIGINAL CARTON ............................................................................................... 49
8.3 REPACKING IN ADIFFERENT CARTON ......................................................................................... 49
SECTION 9: SPECIFICATIONS.................................................................................................................. 50

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List of Figures
FIGURE 2-1: Waveline EZ SYSTEM BLOCK DIAGRAM ................................................................. 7
FIGURE 2-2: POWER SYSTEM BLOCK DIAGRAM .......................................................................... 8
FIGURE 2-3: PIN ASSIGNMENT FOR AC-DC MODULE ................................................................... 8
FIGURE 2-4:PIN ASSIGNMENT FOR DC-DC MODULE.................................................................... 9
FIGURE 2-5: MAINBOARD BLOCK DIAGRAM............................................................................... 12
FIGURE 2-6: PIN ASSIGNMENT FOR MAINBOARD ........................................................................ 12
FIGURE 2-7: ERTSYSTEM BLOCK DIAGRAM ............................................................................ 14
FIGURE 2-8: RESPIRATION SYSTEM BLOCK DIAGRAM................................................................ 15
FIGURE 2-9: TEMPERATURE SYSTEM BLOCK DIAGRAM ............................................................. 15
FIGURE 2-10: NIBP SYSTEM BLOCK DIAGRAM ......................................................................... 16
FIGURE 2-11: OSCILLATORY CHARACTERISTICS DIAGRAM......................................................... 17
FIGURE 2-12: PIN ASSIGNMENT FOR NIBPMODULE .................................................................. 18
FIGURE 2-13: SPO2 SYSTEM BLOCK DIAGRAM ........................................................................ 19
FIGURE 2-14: RECORDER MODULE BLOCK DIAGRAM................................................................ 23
FIGURE 2-15:PIN ASSIGNMENT FOR RECORDER MODULE.......................................................... 23
FIGURE 2-16: RS232 PIN NO.DIAGRAM ................................................................................. 24
FIGURE 5-1: Waveline EZ DISASSEMBLY SEQUENCE FLOW CHART,SHEET 1 ............................ 36
FIGURE 5-2: Waveline EZ DISASSEMBLY SEQUENCE FLOW CHART,SHEET 2 ................................ 37
List of Tables
Table 2-1: RS-232 Serial Interface Connections…………………………………………………..24
Table 3-1: Required Test Equipment………………………………………………………………25
Table 3-2: Earth Leakage Current Values…………………………………………………………29
Table 3-3: Enclosure Leakage Current……………………………………………………………29
Table 3-4: Patient Leakage Current Values………………………………………………………30
Table 3-5: Patient Leakage Current Values— Mains Voltage on Applied Part………………31
Table 3-6: Test Lead Combinations…………………………………………………………………32
Table 3-7: Allowable Leakage Current………………………………………………………………32
Table 6-1: Waveline EZ spare parts list………………………….....……………………………40
Table 6-2: Waveline EZ Accessories………………………..……………………………………41
Table 7-1: Problem Categories………………………………………………………………………43
Table 7-2: Lists recommended actions to address power problems……………………………44
Table 7-3: Switches/Knob Problems…………………………………………………………………45
Table 7-4: Display/Audible Tones Problems…………………………………………………………45
Table 7-5: Operational Performance Problems………………………………………………………46
Table 7-6: Serviceable Hardware Error Messages…………………………………………………47

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SECTION 1: INTRODUCTION
1.1 MANUAL OVERVIEW
1.2 WARNINGS, CAUTIONS AND NOTES
1.3 Waveline EZ PATIENT MONITOR DESCRIPTION
1.4 RELATED DOCUMENTS
1.1 MANUAL OVERVIEW
This manual contains information for servicing the model Waveline EZ patient monitor,
throughout this manual. Only qualified service personnel should service this product.
Before servicing the Waveline EZ, read the user’s manual carefully for a thorough
understanding of operation.
1.2 WARNINGS, CAUTIONS AND NOTES
This manual uses two terms that are important for proper operation of the monitor:
Warning, Caution, and Note.
1.2.1 Warning
A warning precedes an action that may result in injury or death to the patient or user.
1.2.2 Caution
A caution precedes an action that may result in damage to, or malfunction of, the monitor.
Cautions are highlighted in boldface type.
1.2.3 Note
A note gives information that requires special attention.
1.3 Waveline EZ PATIENT MONITOR DESCRIPTION
The Waveline EZ monitor is a comprehensive monitoring system with two or three
traces compiling, processing, analyzing and displaying data from up to eight different
patient parameters. It integrates parameter measuring modules, display and recorder in
one device, featuring in compactness, lightweight and portability. Built-in battery facilitates
transportation of patient.
The purpose and function of the Waveline EZ monitor is to monitor ECG, heart rate,
NIBP (systolic, diastolic, and mean arterial pressures), SpO2, respiration, temperature,
and EtCO2 for adult, neonate and pediatric patients in all hospital areas and hospital-type
facilities. It may be used during hospital transport and in mobile, land-based environments,
such as ambulances.
The Waveline EZ monitor offers advanced features such as an intuitive touchscreen
with clinical measurements, one-touch commands, crisp and clear display.

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The physical and operational characteristics of the monitor are described in the user’s
manual and in the Specifications section of this manual.
1.4 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 Waveline EZ user’s manual. To understand the various sensors,
ECG leads, blood pressure cuffs, SPO2 probe and etc. that work with the monitor, refer to
the individual directions for use that accompany these accessories.

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SECTION 2: INTRODUCTION AND SYSTEM DESCRIPTION
2.1 SYSTEM OVERVIEW
2.2 SYSTEM BLOCK DIAGRAM
2.2.1 POWER SYSTEM
2.2.2 MAINBOARD (ARM-FPGA SYSTEM，ERT MODULE（ECG, RESP, TEMP,SPO2）)
2.2.3 NIBP MODULE
2.2.4 SPO2 MODULE
2.2.5 DISPLAY
2.2.6 KEYBOARD (SWITCHES)
2.2.7 TOUCH PANEL
2.2.8 SPEAKER
2.2.9 RECORDER
2.2.10 RS-232
2.1 SYSTEM OVERVIEW
2.1.1 The Complete Waveline EZ Patient Monitor System
The Waveline EZ patient monitor is a full-function monitor for use on adult, notate and
pediatric patients. The functions performed by the system include monitoring patient ECG,
heart rate, respiration rate, non-invasive blood pressures, blood oxygen saturation,
ETCO2 and temperature.
In addition to monitoring and displaying the status of these physiological parameters, the
instrument performs various microprocessor-programmed analytical functions, such as:
yCreating both visual and audible alarm signals when settable limits are violated;
yCreating and displaying warning messages when conditions are detected that would
degrade or prevent valid measurements;
yCreating and displaying trend waveforms or tabular data;
yProviding input to an optional recorder for printout of current or trend waveforms or
tabular data.
The monitor is essentially a battery-powered instrument. An internal charging unit is
designed to accept only an AC line voltage.
The charger uses these external power sources to maintain a “float” voltage source
available from the batteries.
2.2 SYSTEM BLOCK DIAGRAM
The Waveline EZ patient monitor functions are represented graphically in the System
Block Diagram, Figure 2-1. Each section of the System Block Diagram is described briefly

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in the text that follows the illustration. This is followed by more detailed descriptions of the
theory of operation of each block.
Power
Supply
Lithium-Ion
Battery
Main Board
External
Interface RS232 Keypad Switches
SpO2
Module
NIBP
Module
Patient Connectors
ECG TEMP
AC Input
SPEAKER
FIGURE 2-1: Waveline EZ SYSTEM BLOCK DIAGRAM
2.2.1 POWER SYSTEM
The power system section contains a power supply capable of operating the monitor and
charging the battery from either an AC source of 100 to 240 volts at 50 to 60 Hz or 16.7
volt DC input. This section also contains the battery, battery monitoring circuitry, and
battery charging circuitry. The battery provides the operating power for the monitor. Power
system outputs of +5 volts DC, +8.3 volts DC, and +12 volts DC are developed for use
throughout the non-isolated portions of the monitor. The power system is illustrated in the
diagram below.