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SERVICE MANUAL OMNI III Patient Monitor

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

© 2008 Infinium Medical, Inc. All rights reserved.

Ver 1.0

Infinium Medical Inc. Website: www.infiniummedical.com Address: 12151 62nd St North #5 Largo Fl, 33773 USA Toll Free (US call only):

866-918-8434

International: 1-727-531-8434 Fax: 1-727-531-8436

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

TABLE OF CONTENTS SECTION 1: INTRODUCTION .................................................................................................................... 1 1.1 MANUAL OVERVIEW ........................................................................................................................ 1 1.2 WARNINGS, CAUTIONS, AND NOTES............................................................................................ 1 1.3 OMNI III PATIENT MONITOR DESCRIPTION ................................................................................ 1 1.4 RELATED DOCUMENTS.................................................................................................................... 1 SECTION 2: ROUTINE MAINTENANCE .................................................................................................. 2 2.1 CLEANING ........................................................................................................................................... 2 2.2 PERIODIC SAFETY AND FUNCTIONAL CHECKS......................................................................... 2 2.3 BATTERIES .......................................................................................................................................... 2 2.4 ENVIRONMENTAL PROTECTION.................................................................................................... 2 SECTION 3: PERFORMANCE VERIFICATION ...................................................................................... 3 3.1 INTRODUCTION.................................................................................................................................. 3 3.2 EQUIPMENT NEEDED........................................................................................................................ 3 3.3 PERFORMANCE TESTS...................................................................................................................... 3 3.3.1 BATTERY CHARGE ...............................................................................................................3 3.3.2 BATTERY PERFORMANCE TEST ......................................................................................4 3.3.3 POWER-ON SELF-TEST.......................................................................................................4 3.3.4 HARDWARE AND SOFTWARE TESTS .............................................................................5 3.3.5 OPERATION WITH A HUMAN SUBJECT ..........................................................................5 3.4 SAFETY TESTS.................................................................................................................................... 6 SECTION 4: DISASSEMBLY GUIDE .......................................................................................................11 4.1 INTRODUCTION.................................................................................................................................11 4.2 HOW TO USE THIS SECTION...........................................................................................................11 4.3 DISASSEMBLY FLOW CHARTS ..................................................................................................... 12 4.4 CLOSED CASE DISASSEMBLY PROCEDURES............................................................................ 14 4.5 FRONT CASE DISASSEMBLY PROCEDURES .............................................................................. 16 4.6 REAR CASE DISASSEMBLY PROCEDURES................................................................................. 21 SECTION 5: SPARE PARTS .................................................................................................................... 25 5.1 INTRODUCTION................................................................................................................................ 25 SECTION 6: PACKING FOR SHIPMENT ............................................................................................... 28 6.1 GENERAL INSTRUCTIONS ............................................................................................................. 28 6.2 REPACKING IN ORIGINAL CARTON ............................................................................................ 28 6.3 REPACKING IN A DIFFERENT CARTON ...................................................................................... 28 SECTION 7: TROUBLESHOOTING ........................................................................................................ 29 7.1 INTRODUCTION................................................................................................................................ 29 7.2 HOW TO USE THIS SECTION.......................................................................................................... 29 -I-

Service Manual for OMNI III

7.3 WHO SHOULD PERFORM REPAIRS .............................................................................................. 29 7.4 REPLACEMENT LEVEL SUPPORTED ........................................................................................... 29 7.5 OBTAINING REPLACEMENT PARTS ............................................................................................ 29 7.6 TROUBLESHOOTING GUIDE.......................................................................................................... 30 SECTION 8: SPECIFICATIONS ............................................................................................................... 36 SECTION 9: INTRODUCTION AND SYSTEM DESCRIPTION........................................................... 40 9.1 SYSTEM OVERVIEW........................................................................................................................ 40 9.2 SYSTEM BLOCK DIAGRAM............................................................................................................ 40 9.2.1 POWER SYSTEM .................................................................................................................42 9.2.2 MAIN PCB (ARM-FPGA SYSTEM，ERT MODULE（ECG, RESP, TEMP）) .........................42 9.2.2.1 FPGA ...................................................................................................................................43 9.2.2.2 ARM (ADVANCED RISC MACHINE)..............................................................................43 9.2.2.3 ERT MODULE（ECG, RESP, TEMP） .........................................................................43 9.2.3 NIBP MODULE ......................................................................................................................45 9.2.4 SPO2 MODULE.....................................................................................................................47 9.2.5 DISPLAY.................................................................................................................................48 9.2.8 SPEAKER...............................................................................................................................49 9.2.9 RECORDER...........................................................................................................................50 9.2.10 RS-232..................................................................................................................................50 SECTION 10: DRAWINGS ........................................................................................................................ 52 10.1 OVERVIEW ...................................................................................................................................... 52 10.2 LIST OF FIGURES............................................................................................................................ 52

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List of Figures FIGURE 4-1: OMNI III DISASSEMBLY SEQUENCE FLOW CHART, SHEET 1.................................... 12 FIGURE 4-2: OMNI III DISASSEMBLY SEQUENCE FLOW CHART, SHEET 2.................................... 13 FIGURE 5-1: OMNI III TOP ASSEMBLY DRAWING ........................................................................ 25 FIGURE 9-1: OMNI III SYSTEM BLOCK DIAGRAM ........................................................................ 41 FIGURE 9-2: POWER SYSTEM BLOCK DIAGRAM .......................................................................... 42 FIGURE 9-3: ERT SYSTEM BLOCK DIAGRAM .............................................................................. 44 FIGURE 9-4: RESPIRATION SYSTEM BLOCK DIAGRAM ................................................................. 45 FIGURE 9-5: TEMPERATURE SYSTEM BLOCK DIAGRAM ............................................................... 45 FIGURE 9-6: NIBP SYSTEM BLOCK DIAGRAM ............................................................................. 46 FIGURE 9-7: OSCILLATORY CHARACTERISTICS DIAGRAM ............................................................ 47 FIGURE 9-8: SPO2 SYSTEM BLOCK DIAGRAM ............................................................................ 48 FIGURE 9-9: KEYBOARD SYSTEM BLOCK DIAGRAM..................................................................... 49 FIGURE 9-10: RECORDER MODULE BLOCK DIAGRAM ................................................................. 50 FIGURE 9-11: RS232 PIN NO. DIAGRAM ................................................................................... 51

List of Tables Table 3-1: Required Test Equipment………………………………………………………………3 Table 3-2: Earth Leakage Current Values…………………………………………………………7 Table 3-3: Enclosure Leakage Current……………………………………………………………7 Table 3-4: Patient Leakage Current Values………………………………………………………8 Table 3-5: Patient Leakage Current Values— Mains Voltage on Applied Part………………9 Table 3-6: Test Lead Combinations…………………………………………………………………10 Table 3-7: Allowable Leakage Current………………………………………………………………10 Table 5-1: OMNI III spare parts list……………………………………………………………………26 Table 5-2: OMNI III Accessories………………………………………………………………………27 Table 7-1: Problem Categories………………………………………………………………………30 Table 7-2: Lists recommended actions to address power problems……………………………31 Table 7-3: Switches/Knob Problems…………………………………………………………………32 Table 7-4: Display/Audible Tones Problems…………………………………………………………32 Table 7-5: Operational Performance Problems………………………………………………………33 Table 7-6: Serviceable Hardware Error Messages…………………………………………………34 Table 9-1: RS-232 Serial Interface Connections…………………………………………………51

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SECTION 1: INTRODUCTION 1.1 MANUAL OVERVIEW 1.2 WARNINGS, CAUTIONS, AND NOTES 1.3 OMNI III PATIENT MONITOR DESCRIPTION 1.4 RELATED DOCUMENTS

1.1 MANUAL OVERVIEW This manual contains information for servicing the model OMNI III patient monitor, throughout this manual. Only qualified service personnel should service this product. Before servicing the OMNI III, 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 OMNI III PATIENT MONITOR DESCRIPTION The purpose and function of the OMNI III patient monitor is to monitor: ECG; heart rate; noninvasive blood pressure (systolic, diastolic, and mean arterial pressures); functional arterial oxygen saturation; respiration rate and dual temperature for neonatal, pediatric and adult 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 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 OMNI III user’s manual. To understand the various sensors, ECG leads, blood pressure cuffs, SPO2 probe and temperature probes that work with the monitor, refer to the individual directions for use that accompany these accessories. -1-

SECTION 2: ROUTINE MAINTENANCE 2.1 CLEANING 2.2 PERIODIC SAFETY AND FUNCTIONAL CHECKS 2.3 BATTERIES 2.4 ENVIRONMENTAL PROTECTION

2.1 CLEANING WARNING: Do not immerse the OMNI III 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 OMNI III, 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 or switches. Do not allow any liquids to penetrate connectors or openings in the instrument. For cables, sensors and cuffs, follow the cleaning instructions in the directions for use that accompany these accessories.

2.2 PERIODIC SAFETY AND FUNCTIONAL CHECKS The OMNI III requires no routine service or calibration other than cleaning and battery maintenance. The following performance verification tests may be used following repair or during routine maintenance (if required by your local institution). 1. Inspect the exterior of the OMNI III for damage. 2. Inspect labels for legibility. If the labels are not legible, contact Infinium Medical Technical Services Department or your local Infinium Medical 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 Infinium Medical Technical Services Department or your local Infinium Medical representative.

2.3 BATTERIES If the OMNI III has not been used for a long period of time, the battery will need charging. To charge the battery, connect the OMNI III to an AC outlet. Note: Storing the OMNI III for a long period without charging the battery may degrade the battery capacity. A complete battery recharge requires 6 hours. The battery may require a full charge/discharge cycle to restore normal capacity. Infinium Medical recommends that the OMNI III’s sealed, lead-acid batteries be replaced at 2-year intervals. Refer to Section 4, Disassembly Guide.

2.4 ENVIRONMENTAL PROTECTION Follow local governing ordinances and recycling plans regarding disposal or recycling batteries and other device components. -2-

SECTION 3: PERFORMANCE VERIFICATION 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 OMNI III covers. If the OMNI III fails to perform as specified in any test, repairs must correct the problem before the monitor is returned to the user. WARNING: Performance Verification. Do not place the OMNI III into operation after repair or maintenance has been performed, until all Performance Tests have been performed. Failure to perform all tests could result in erroneous monitor readings.

3.2 EQUIPMENT NEEDED Table 3-1: Required Test Equipment Equipment

Description

Digital multimeter Pulse oximeter simulator

INDEX-2

ECG simulator

Fluke

NIBP simulator

Fluke

Temperature simulator Safety analyzer

3.3 PERFORMANCE TESTS The battery charge and battery performance test should be performed before monitor repairs whenever the battery is suspected as being a source of the problems. All other tests may be used following repairs or during routine maintenance (if required by your local institution. Before performing the battery performance test, ensure that the battery is fully charged (Paragraph 3.3.1).

This section is written using Infinium Medical factory-set power-up defaults. If your institution has preconfigured custom defaults, those values will be displayed. 3.3.1 BATTERY CHARGE

Perform the following procedure to fully charge the battery. 1. Connect monitor to AC power source using proper power cord.

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Service Manual for OMNI III

2. Verify AC icon is displayed. AC SOURCE indicator is lit. 3. Charge battery for at least 6 hours. Note: The battery may require a complete charge/discharge cycle to restore its normal capacity, depending on its previous usage. 4. The only way to check for a full charge is to perform the procedure in paragraph 3.2.2 “Battery Performance Test.” 3.3.2 BATTERY PERFORMANCE TEST 1. The OMNI III monitor is specified to typically operate on battery power about 90 minutes with no printing, and one NIBP measurement every 15 minutes. Before performing this test, ensure that the battery is fully charged (paragraph 3.3.1). 2. Connect all cables and leads. 3. Set NIBP simulator to simulate pressure setting of 120/80 mmHg and set ECG simulator to simulate heart rate of 80 bpm. 4. Ensure monitor is not connected to AC power. 7. With OMNI III turned off, press On/Standby switch and verify battery icon appears at top of display and battery indicator is lit after power-on self-test is completed. Boxes in battery icon should all be filled, indicating battery is charged. 8. Verify monitor is responding to SPO2 simulator signal and audible alarm is sounding. Use knob to select SPO2 Setup menu and permanently silence SPO2 audible alarm. 9. Use knob to select NIBP Setup menu and set Automatic Measurement Interval to 15 minutes. Exit menu and press front panel NIBP Start/Stop switch to manually initiate first NIBP measurement. Subsequent NIBP measurements will be taken automatically every 15 minutes. 10. OMNI III monitor must operate for at least 80 minutes before monitor automatically powers down due to low battery condition. 11. Verify low battery alarm occurs when represents the 25% electric energy of the battery before battery fully discharges. 12. Allow monitor to operate until it automatically powers down due to low battery condition. Press Alarm Silence switch to terminate this audible alarm. 13. If monitor passes this test, immediately recharge battery (paragraph 3.3.1, steps 1–3). 3.3.3 POWER-ON SELF-TEST 1. Connect monitor to AC power source and verify AC SOURCE indicator is lit. 2. Do not connect any input cables to monitor. 3. Observe the monitor front panel. With the monitor off, press the STANDBY/ON button. The display backlight illuminates, but display is blank. The INFINIUM logo then appears for a few seconds, with monitor type, version numbers of boot and operational software will

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Service Manual for OMNI III

displayed in centre of display. Note: Power-on self-test takes approximately 4 seconds to complete. a. Upon successful completion of power-on self-test, display will be in normal monitoring screen configuration. b. No vital signs numeric values or waveforms will be displayed. 3.3.4 HARDWARE AND SOFTWARE TESTS 3.3.4.1 Power Supply Source Test

This procedure uses normal system components to test circuit operation. The power supply source LED is used to indicate the power supply source type (batteries or AC). 1. Connect an AC power cable to the socket on the rear panel of the monitor, press the ON/STANDBY button to turn the monitor on. If AC SOURCE indicator is lit with red, which means the AC SOURCE LED can work normally. 2. Power off the monitor. Unplug an AC power cable from the socket of the rear panel for monitor, insert a charged batteries into battery housing (notice insertion direction, refer to user’s manual, see its insert indication labeling on the battery), press the ON/STANDBY button to turn the monitor on. If DC SOURCE indicator is lit with red, which means the DC SOURCE LED can work normally. And the monitor works by battery. 3. Leave the sensor open with the LED and photo detector visible. 4. After the monitor completes its normal power-up sequence, verify that the sensor LED is brightly lit. 3.3.4.2 Speaker Test

Press the ON/STANDBY button to turn the monitor on. After the normal power-up sequence, rotating the knob, the speaker should sound. Press the ALARM SILENCE button on the front panel of the monitor. The speaker is temporarily silenced. 3.3.4.3 Cooling Fan Test

Connect an AC power cable to the socket on the rear panel of the monitor and press the ON/STANDBY button to turn the monitor on. If the cooling fan on the rear panel of the monitor works with rotating and sounds a hum, that means the cooling fan works normally.

3.3.5 OPERATION WITH A HUMAN SUBJECT Patient monitoring involves connecting the monitor to a human subject for a qualitative test.

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1. Connect all cables, leads, electrodes, blood pressure hose, blood pressure cuff and sensors to monitor according to directions for use. 2. Clip the oxygen probe to subject as recommended in sensor directions for use. 3. Apply appropriate subject according to the cuff directions for use. 4. Press On/Standby switch to turn monitor on and verify monitor is operating. 5. Monitor should stabilize on subject’s physiological signal in about 15 to 30 seconds. 6. Verify oxygen saturation, heart and respiration rates are reasonable for subject. 7. Press NIBP Start/Stop switch on front panel of monitor. 8. Verify that blood pressure values are reasonable for subject.

3.4 SAFETY TESTS OMNI III safety tests meet the standards of, and are performed in accordance with, IEC 601-1 for instruments classified as Class I and TYPE CF and BF.

3.4.1 Protective Earth Continuity This test checks the integrity of the power cord ground wire from the AC plug to the instrument chassis ground. The current used for this test is less than or equal to 6 Volts RMS, 50 to 60 Hz, and 25 Amperes. 1. Connect the monitor AC mains plug to the analyzer as recommended by the analyzer operating instructions. 2. Connect the analyzer resistance input lead to the equipotent terminal (ground lug) on the rear of the instrument. Verify that the analyzer indicates 100 milliohms or less.

3.4.2 Electrical Leakage The following tests verify the electrical leakage of the monitor: · 3.4.2.1 Earth Leakage Current · 3.4.2.2 Enclosure Leakage Current · 3.4.2.3 Patient Leakage Current · 3.4.2.4 Patient Source Current (Mains on Applied Part) · 3.4.2.5 Patient Auxiliary Current

3.4.2.1 Earth Leakage Current This test is in compliance with IEC 601-1 (earth Leakage current). The applied voltage for IEC 601-1 the voltage is 264 Volts AC, 50 to 60 Hz. All measurements shall be made with the power switch in both “On” and “Off” positions. 1. Connect the monitor AC plug to the electrical safety analyzer as recommended by the analyzer operating instructions. 2. Perform test as recommended by analyzer operating instructions.

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Note: Earth leakage current is measured under various conditions of the AC mains and protective earth conductor. For each condition, the measured leakage current must not exceed that indicated in Table 3-2. Table 3-2: Earth Leakage Current Values Test Condition Allowable Leakage Current (microamps) N.C. 500 S.F.C. 1000 N.C.： ：Normal Condition S.F.C.: Single Fault Condition

3.4.2.2 Enclosure Leakage Current This test is in compliance with IEC 601-1 (enclosure leakage current). This test is for ungrounded enclosure current, measured between enclosure parts and earth. The applied voltage for IEC 601-1 the applied voltage is 264 Volts AC at 50 to 60 Hz. 1. Connect the monitor AC plug to the electrical safety analyzer as recommended by the analyzer operating instructions. 2. Place a 200 cm2 foil in contact with the instrument case making sure the foil is not in contact with any metal parts of the enclosure that may be grounded. 3. Measure the leakage current between the foil and earth. Note: The analyzer leakage current indication must note exceed the values listed in Table 3-4. Test Condition

Table 3-3: Enclosure Leakage Current Allowable Leakage Current (microamps)

N.C. S.F.C.

100 500

3.4.2.3 Patient Leakage Current This test measures patient leakage current in accordance with IEC 601-1, clause 19, for Class I, type CF equipment. Patient leakage current in this test is measured from any individual patient connection to earth (power ground). 1. Configure the electrical safety analyzer as recommended by the analyzer operating instructions. 2. Connect the monitor’s AC mains power cord to the analyzer as recommended by the analyzer operating instructions. 3. Connect the ECG test cable between the ECG connector on the OMNI III and the appropriate input connector on the analyzer. 4. Turn on the OMNI III. 5. Perform the patient leakage current test as recommended by the analyzer operating

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instructions. Note: Patient leakage current is measured under various conditions of the AC mains and protective earth conductor. For each condition, the measured leakage current must not exceed that indicated in Table 3-3. 6. Repeat the patient leakage current test for the SPO2 and temperature patient connections, using the appropriate test cables. Note: This test requires a test cable for each patient connector. For example, the ECG test cable consists of the ECG wires connector, with all conductors shorted together, and connected to a test lead from the electrical safety analyzer. Test cables for SPO2 and temperature can be configured in a similar manner, by wrapping each sensor end individually with aluminum foil filled with conductive gel (only enough gel to ensure conductivity). Attach a wire to the foil that is connected to a test lead from the electrical safety analyzer. Table 3-4: Patient Leakage Current Values Test Condition

Allowable Leakage Current (microamps)

N.C.

100(SPO2)，10（ECG, temperature）

S.F.C.

100(SPO2)，50（ECG, temperature）

3.4.2.4 Patient Leakage Current - (Mains Voltage on the Applied Part) This test measures patient leakage current in accordance with IEC 601-1, clause 19, for Class I, type CF equipment. In this test, 110% of mains voltage is applied between each patient connection and earth (power ground). Patient leakage current is then measured from any individual patient connection to earth. Note: This test requires the same test cables for each patient connector as described in paragraph 3.4.2.3. Warning: AC mains voltage will be present on the applied part terminals during this test. Exercise caution to avoid electrical shock hazard.

1. Configure electrical safety analyzer as recommended by analyzer operating instructions. 2. Connect monitor’s AC mains power cord to analyzer as recommended by analyzer operating instructions. 3. Connect ECG test cable between ECG connector on OMNI III and appropriate input connector on analyzer. 4. Turn on OMNI III. 5. Perform test as recommended by analyzer operating instructions. Note: Patient leakage current is measured with normal and reverse mains polarity. For

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Service Manual for OMNI III

each condition, the measured leakage current must not exceed that indicated in Table 3-4. 6. Repeat test for SpO2 and temperature patient connections, using appropriate test cables. Table 3-5: Patient Leakage Current Values— Mains Voltage on Applied Part Test Condition Allowable Leakage Current (microamps) S.F.C. 5000(SPO2)

50（ECG, temperature） 3.4.2.5 Patient Auxiliary Current This test measures patient auxiliary current in accordance with IEC 601-1, clause 19, for Class 1, type CF equipment. The applied voltage for IEC 601-1 the voltage is 264 volts, 50 to 60 Hz. Patient auxiliary current is measured between each ECG test lead and between each sensor connection for all possible connections. Note: This test requires the same test cables for each patient connector as described in paragraph 3.4.2.3. 1. Configure the electrical safety analyzer as recommended by the electrical analyzer’s operating instructions. 2. Connect the monitor’s AC mains power cord to the electrical analyzer as recommended by the electrical analyzer’s operating instructions. 3. Connect the patient test lead combination in table 3-6 to the appropriate input connector on the electrical analyzer. 4. Turn on the OMNI III. 5. Perform patient auxiliary current test per table 3-7 as recommended by electrical analyzer’s operating instructions. 6. Repeat the patient auxiliary current test for each test lead combination as listed in Table 3-5 and measure each patient auxiliary current.

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Table 3-6: Test Lead Combinations First Test Lead

Second Test Lead

ECG (LA) ECG (LA) ECG (LL) ECG (LA) ECG (LL) ECG (RA) ECG (LA) ECG (LL) ECG (RA) Temperature

ECG (LL) ECG (RA) ECG (RA) Temperature Temperature Temperature SPO2 SPO2 SPO2 SPO2

Table 3-7: Allowable Leakage Current Test Condition

Allowable Leakage Current (microamps)

N.C. S.F.C.

100(SPO2)，10（ECG, temperature） 500(SPO2)，50（ECG, temperature）

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SECTION 4: DISASSEMBLY GUIDE 4.1 INTRODUCTION 4.2 HOW TO USE THIS SECTION 4.3 DISASSEMBLY FLOW CHARTS 4.4 CLOSED CASE DISASSEMBLY PROCEDURES 4.5 FRONT CASE DISASSEMBLY PROCEDURES 4.6 REAR CASE DISASSEMBLY PROCEDURES

4.1 INTRODUCTION The OMNI III can be disassembled down to all major component parts, including:


PCBs




Battery




Cables




Recorder




Function switches




Chassis enclosures

The following tools are required: • Small, Phillips-head screwdriver • Medium, Phillips-head screwdriver • Screw wrenches

WARNING: Before attempting to open or disassemble the OMNI III, disconnect the power cord from the OMNI III and disassemble the battery.

WARNING: The TFT backlight driver generates high voltage. Exercise caution when operating monitor with covers open. Caution: If internal battery cable has been disconnected, pay particular attention to polarity of the cable before reattaching. If battery cable polarity is reversed, it is likely that circuit damage will occur.

4.2 HOW TO USE THIS SECTION

The step-by-step procedures that are used to access replaceable parts of the OMNI III are illustrated in the Disassembly Sequence Flow Charts. As indicated in the flow charts, the monitor consists of two main assemblies, the Front Case Assembly and Rear Case Assembly. The Main PCB assembly is separable from the front case assembly. The circles on the flow charts contain reference designators that point to specific steps in

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Service Manual for OMNI III

the Disassembly Procedures. The Disassembly Procedures, paragraphs 4.4, 4.5, and 4.6 contain detailed disassembly instructions, accompanied by illustrations. The rectangular boxes on the flow charts represent the various spare components or subassemblies. The digits appearing in these boxes are their respective part numbers. Section 5, Spare Parts, contains a complete listing of the available spare parts. The Disassembly Flow Charts are organized so that minimum disassembly is required to remove and replace defective items.

4.3 DISASSEMBLY FLOW CHARTS FIGURE 4-1: OMNI III DISASSEMBLY SEQUENCE FLOW CHART, SHEET 1

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FIGURE 4-2: OMNI III DISASSEMBLY SEQUENCE FLOW CHART, SHEET 2

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4.4 CLOSED CASE DISASSEMBLY PROCEDURES This section describes the items that may be removed/replaced without disassembling the main case of the monitor. Step A1 Procedure To remove front panel knob: a) Knob is friction-fit on encoder shaft. Grasp sides of knob firmly and pull straight back from monitor; knob should slip off encoder shaft. b) If knob does not move, separate front and rear cases as described in step B1. There is a hole in front cover behind knob; insert small screwdriver blade in hole and push firmly against back of knob. Illustration

Encoder Assembly

Spare Knob Step A2 Procedure To remove battery: a) Remove the cover of two batteries at the left side case, turn the white plastic handle in a counter-clockwise direction.

White plastic handle

b) Two batteries will be popped out, pull out two batteries from the battery housing. Illustration

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Service Manual for OMNI III

Warning: When install the battery, please note the insertion direction(see user’s manual), the label that attached on the surface of battery illuminates the right insertion direction. Step A3 Procedure To remove recorder module: a) Use the finger to pull the door of the recorder, the door will drop forward. Illustration

b) Remove paper roll, if installed. c) Pull recorder straight out side of monitor, disengaging connector at rear of Recorder module from in side case assembly. d) Removal of recorder module can be accomplished only after front and rear cases are separated. Illustration

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Service Manual for OMNI III

Step A4 Procedure To remove fuses: a) Remove AC power input fuses from the AC input socket in the rear case as shown, using fuse pullers. Illustration

4.5 FRONT CASE DISASSEMBLY PROCEDURES This section describes the steps to separate the front and rear case assemblies, and the items that may be removed/replaced on the front case assembly. Step B1 Procedure To separate front and rear case assemblies: a) Use screwdriver to remove 9 screws fastening Rear Case Assembly to Front Case Assembly. Retain for reassembly. Illustration

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Service Manual for OMNI III

Procedure b) Separate two major case assemblies. There is enough cable and tubing slack to permit the two assemblies to remain at approximately a 40-degree angle to each other. Illustration

Rear case Assembly Front case Assembly

c) Disconnect connectors from PCBs. Front and rear case assemblies are now completely separable from one another. There are 8 piece of connectors between the front case assembly and the rear case assembly: 1. Power line: its connector is marked with “Pow” word (from power supply PCB to ERT PCB) 2. ECG line: its connector is marked with “ECG” word (from ECG port to ERT PCB) 3. Two Control lines: its connector is marked with “CONTROL1” and “CONTROL2” word (from power supply PCB to ERT PCB) 4. Temperature line: its connector is marked with “TEMP” word (from ERT PCB to ECG port) 5. SPO2 line: its connector is marked with “CONTROL” word (from SPO2 PCB to SPO2 port) 6. Speaker line: its connector is marked with “SPEAK” word (from keyboard to speaker of the back panel) 7. Ground line: from the metal chassis of the rear case assembly splay back plate of the front case assembly.

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Step B2 Procedure To remove Keyboard PCB, Main(ECG, RESP, TEMP, FPGA-ARM) PCB and SPO2 PCB from the Front Case Assembly::  SPO2 PCB and Main PCB: a) Complete the step B1. b) Use screwdriver to remove four fastening screws around periphery of Main PCB. Retain fastening screws for reassembly. Illustration

SPO2 PCB

Inverter module Main PCB

Keyboard PCB c) Disconnect connectors from PCBs. d) Use screwdriver to remove four fastening screws and nut to fix the SPO2 PCB on ERT PCB. The SPO2 PCB and main PCB will be parted. Retain fastening screws for reassembly. Illustration

SPO2 PCB

Warning: The SPO2 PCB communicates with main PCB via a group of pin header and female header interface, there is needed to insert the SPO2 PCB into main PCB carefully, otherwise there maybe damage interface’s pins. Keyboard PCB: a) Complete the step B1. b) Remove six black screws around periphery of keyboard PCB. lift off 5 connectors, pull

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Service Manual for OMNI III

keyboard PCB straight up to disengage it from the front case. Step B3 Procedure To remove inverter module: a) Complete the step B1. b) Use screwdriver to remove four fastening screws around periphery of inverter PCB. Retain fastening screws for reassembly. c) Take inverter PCB straight from the display back plate. Illustration

Inverter module

Step B4 Procedure To remove TFT display: a) Complete the steps of B1 and B2. b) Remove 8 fastening screws around periphery of display back plate. Retain fastening screws for reassembly. Illustration

Display plate

d) Now display back plate can be removed. Reverse Display back plate. e) TFT screen and display back plate be lifted out of front case together. Illustration

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back

Service Manual for OMNI III

Front case

TFT screen

Handling Precautions: a) Since front polarizer is easily damaged, pay attention not to scratch it. b)

Be sure to turn off power supply when inserting or disconnecting from input connector.

c)

Wipe off water drop immediately. Long contact with water may cause discoloration or spots.

d)

When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth.

e)

Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface.

f)

Since CMOS LSI is used in this module, take care of static electricity and insure human earth when

g)

Handling.

h)

Do not open nor modify the Module Assembly.

i)

Do not press or pat the panel surface by fingers, hand or tooling.

j)

Do not press the reflector sheet at the back of the module to any directions.

k)

In case if a module has to be put back into the packing container slot after once it was taken out from the

l)

container, do not press the center of the CCFL reflector edge. Instead, press at the far ends of the CCFL

m) Reflector edge softly. Otherwise the TFT module may be damaged. n)

At the insertion or removal of the Signal Interface Connector, be sure not to rotate nor tilt the Interface

o)

Connector of the TFT module.

p)

After installation of the TFT module into an enclosure (Desktop monitor Bezel, for example), do not twist

q)

Nor bend the TFT Module even momentary. At designing the enclosure, it should be taken into

r)

Consideration that no bending/twisting forces are applied to the TFT module from outside. Otherwise the

s)

TFT module may be damaged.

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4.6 REAR CASE DISASSEMBLY PROCEDURES This section describes the items that may be removed/replaced on the rear case assembly. First perform the procedure described in step B1 to separate the front and rear case assemblies. The all parts of real case are assembled on an aluminous chassis assembly. You can uninstall the aluminous chassis assembly at first, disassemble one part you want then. Step C1 Procedure To remove aluminous chassis assembly: a) Complete the step B1. b) Use screwdriver to remove screws fastening the aluminous chassis assembly from rear case assembly. Illustration Aluminous chassis assembly

c) Carefully lift out aluminous chassis assembly from rear case. Illustration Cooling fan

Speaker

Aluminous chassis assembly

Step C2 Procedure To remove Speaker and cooling fan: a) Complete the step B1 and C1. b) Use screwdriver to remove screws fastening the speaker or the cooling fan from real case assembly. The speaker or cooling fan can be disassembled. Step C3 Procedure To remove power supply PCB and remove AC-DC module To remove power supply PCB: a) Complete the step B1.

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Service Manual for OMNI III

b) Complete the step C1 if need. c) Use screwdriver to remove four screws fastening the shield mask for power supply PCB.

Illustration

Shield mask for power supply PCB

d) Use screwdriver to remove four screws fastening power supply PCB. e) Carefully take out power supply PCB from rear case. On power supply PCB, disconnect connectors from other fittings. Illustration

Power supply PCB

To remove AC-DC module: a) Complete the step B1. b) Complete the step C1 if need. c) Complete the step C3. d) Use screwdriver to remove four screws fastening the shield mask for AC-DC module.

Illustration

Shield mask for AC-DC module

e) Carefully take out Shield mask for AC-DC module from the rear case. f)

Disconnect connectors from Shield mask for AC-DC module.

g) Use screwdriver to remove four screws fastening AC-DC module. The AC-DC module

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Service Manual for OMNI III

PCB can be taken out. Illustration

AC-DC module

Step C4 Procedure To remove NIBP PCB and pump assembly: a) Complete the steps B1. b) Use screwdriver to remove four screws fastening NIBP PCB. c) Disconnect connectors from the NIBP PCB.

Illustration

NIBP PCB

d) Carefully lift out NIBP PCB from the rear case. Illustration

e) Use screwdriver to remove four screws fastening pump assembly. f) Carefully lift out pump assembly from the rear case. Illustration

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Service Manual for OMNI III

To NIBP PCB’s JMOTOR socket

To NIBP transducers

Pump assembly To NIBP PCB’s JV1 and JV2 sockets

To NIBP port in the left side panel

Step C5 Procedure To remove RS232 interface and EMI filter: a) Complete the steps B1. b) Complete the steps C1. c) Complete the steps C2 and C3 if need. d) Complete the steps C4. e) Disconnect connectors from the battery housing. f)

Use screwdriver to remove the battery housing. Illustration

RS232 interface

EMI filter

g) Remove fastening screws via screwdriver, RS232 interface and EMI filter can be taken out.

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SECTION 5: SPARE PARTS 5.1 INTRODUCTION

5.1 INTRODUCTION Spare parts, along with part numbers, are shown in Table 5-1 partly. “Item No.” corresponds to the circled callout numbers in Figure 5-1. The “Step Ref.” corresponds to the disassembly steps described in Section 4.

FIGURE 5-1: OMNI III TOP ASSEMBLY DRAWING

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Table 5-1: OMNI III spare parts list Item No.

Description

Part No.

Step Ref.

1

Light-transferring pole

PM-O3-004

B4

2

Front case assembly

PM-O3-001

B1

Main board

PM-O3-050

B2

TFT inverter module

PM-O3-115

B3

SPO2 module

71802B1

B2

3

Knob

PM-O3-002

A1

4

keys

PM-O3-003

B2

5

Keyboard PCB

PM-O3-060

B2

6

TFT screen

M150XN07

B4

7

NIBP module

98-0070-00

C4

8

Battery housing

PM-O3-005

C5

Battery

PM-O3-112

A2

9

Aluminous chassis

PM-O3-006

C1 ,C5

10

Recording bracket

PM-O3-007

B1

11

AC inlet receptacle

PM-O3-090

C5

12

RS232 port

PM-O3-091

C5

13

Recorder

TR60-A

A3

Recorder paper

PM-O3-041

A3

Recorder cover

PM-O3-009

A3

Rear case assembly

PM-O3-020

B1

Fuses

PM-O3-114

A4

17

Speaker

PM-O3-110

C2

18

Cooling fan

PM-O3-111

C2

19

AC-DC module

MPS-75-15

C3

20

Power supply PCB

PM-O3-081

C3

22

Left side port bracket

PM-O3-009

B1

PM-O3-092

B1

PM-O3-093

B1

PM-O3-094

B1

16

NIBP Socket SpO2 Socket ECG Socket

PM-O3-095

B1

23

Dual Temp Socket Battery cover

PM-O3-008

A2

24

Diaphragm plate

PM-O3-031

B4

25

LED lampshade

PM-O3-032

B4

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Table 5-2: OMNI III Accessories Description

Part No.

Cuff for adult

Y000A1

Cuff for neonatal

Y000N1

Cuff for infant

Y000I1

ECG leads

EA02055A

ECG electrodes

915S

Temperature sensor

W0001A

NIBP extension hose

PM-O3-115

Reusable SpO2 Sensor for neonatal (option)

W200A/N-300182

Reusable SpO2 Sensor for pediatric (option)

S200P-300182

Reusable SpO2 Sensor for adult

S200A-300182

RS232 connector

PM-O3-070

AC cable

PM-O3-071

Recorder(option)

TR60-A

Ground line

PM-O3-072

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SECTION 6: PACKING FOR SHIPMENT 6.1 GENERAL INSTRUCTIONS 6.2 REPACKING IN ORIGINAL CARTON 6.3 REPACKING IN A DIFFERENT CARTON

6.1 GENERAL INSTRUCTIONS Pack the monitor carefully. Failure to follow the instructions in this section may result in loss or damage to the monitor. If the original shipping carton is not available, use another suitable carton. Prior to shipping the monitor, contact Infinium Medical’s Technical Services Department or your local Infinium Medical representative. Mark the shipping carton and any shipping documents. Return the monitor by any shipping method that provides proof of delivery. To pack the monitor for return, disconnect all cables. It is not necessary to return sensors, patient cables, NIBP hose and cuff, temperature probe, or external power supply.

6.2 REPACKING IN ORIGINAL CARTON If available, use the original carton and packing materials. Pack the monitor as follows: 1. Place the monitor in original packaging. 2. Place in shipping carton and seal carton with packaging tape. 3. Label carton with shipping address, return address and RGA number, if applicable.

6.3 REPACKING IN A DIFFERENT CARTON If the original carton is not available, use the following procedure to pack the Monitor: 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.

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SECTION 7: TROUBLESHOOTING 7.1 INTRODUCTION 7.2 HOW TO USE THIS SECTION 7.3 WHO SHOULD PERFORM REPAIRS 7.4 REPLACEMENT LEVEL SUPPORTED 7.5 OBTAINING REPLACEMENT PARTS 7.6 TROUBLESHOOTING GUIDE

7.1 INTRODUCTION This section explains how to troubleshoot the OMNI III if problems arise. Tables are supplied that list possible monitor difficulties, along with probable causes, and recommended actions to correct the difficulty.

7.2 HOW TO USE THIS SECTION Use this section in conjunction with Section 3, Performance Verification. And Section 5, Spare Parts. To remove and replace a part you suspect is defective, follow the instructions in Section 4, Disassembly Guide. The circuit analysis section in the Technical Supplement offers information on how the monitor functions.

7.3 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 Infinium Medical Technical Services or your local Infinium Medical representative.

7.4 REPLACEMENT LEVEL SUPPORTED The replacement level supported for this product is to the printed circuit board (PCB) and major subassembly or component level. Once you isolate a suspected PCB, follow the procedures in Section 4, 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 in the monitor before you started troubleshooting) and continue troubleshooting as directed in this section.

7.5 OBTAINING REPLACEMENT PARTS Infinium Medical Technical Services provides technical assistance information and

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Service Manual for OMNI III

replacement parts. To obtain replacement parts, contact Infinium Medical or your Infinium Medical representative.

7.6 TROUBLESHOOTING GUIDE Problems with the OMNI III are separated into the categories indicated in Table 7-1. 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 may encounter. However, problems not covered here can be resolved by calling Infinium Medical Technical Services or your local representative.

Table 7-1: Problem Categories Problem Area

Refer to Paragraph

1. Power • No power-up 7.6.1

• Fails power-on self-test • Powers down without apparent cause 2. Switches/Knob • Monitor does not respond properly to switches

7.6.2

3. Display/Audible Tones • Display does not respond properly

7.6.3

• Tones do not sound properly 4. Operational Performance • Displays appear to be operational, but monitor shows no readings • Modules trouble

7.6.4

• Suspect readings • Recorder not responding 5. Serviceable Hardware Error Messages

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7.6.5

7.6.1

Power

Table 7-2 lists recommended actions to address power problems Condition Recommended Action 1. The OMNI III fails to power-up 1. Ensure power cord is plugged into operational AC when the On/Standby switch is

outlet of appropriate voltage and frequency. Ensure

pressed.

red AC SOURCE indicator is lit. If indicator is not lit, replace power supply assembly. 2. Check fuses located on EMI filter above AC inlet receptacle. Replace fuses if necessary. 3. Inside monitor, check main cables and ensure that it is connected to PCBs and power supply assembly. 4. Ensure keyboard is connected with power supply PCB. If connection is good, replace keyboard. 5. If the problem persists, replace power supply PCB.

2. The OMNI III turns on, then

1. Ensure AC power cord is connected and red AC

shuts off and no error code is

SOURCE indicator is lit, or ensure red BATTERY

displayed.

CHARGING indicator is lit. If monitors operates successfully, battery may be discharged. 2. Recharge battery as directed in paragraph 3.3.1. If battery fails to hold charge, replace battery. 3. If problem persists, replace power supply PCB. 4. If problem persists, replace main PCB.

7.6.2

Switches/Knobs

Table 7-3 lists recommended actions to address problems with the knob and front panel switches.

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Table 7-3: Switches/Knob Problems Condition Recommended Action 1. OMNI III fails to power-up when 1. Take steps as noted in paragraph 7.6.1. the On/Standby switch is pressed.

2. If the problem persists, replace power supply PCB.

2. OMNI III powers up, but some

1. Ensure keyboard connector is plugged into main

or one of the other switches

PCB. If connection is good, change keyboard.

respond.

2. If problem persists, change main PCB.

3. When knob is rotated, no

1. Ensure encoder cable is plugged into keyboard. If

highlight

connection is good, change encoder.

appears

on

display

screen, and/or monitor does not

2. If problem persists, replace keyboard or main

respond to knob presses.

PCB.

7.6.3 Display/Audible Tones Table 7-4 lists recommended actions to address problems with the display and audible tones. Table 7-4: Display/Audible Tones Problems Condition 1. TFT screen is not illuminated or

Recommended Action 1. Ensure status indicator LED, located on the main

no display.

PCB is flashed. Otherwise replace the FPGA (UF1) microprocessor chip or main PCB. 2. Ensure TFT cable is connected to main PCB and backlight inverter module. 3. If problem persists, replace the inverter. 4. If problem persists, replace main PCB. 5. If problem persists, replace TFT assembly.

2. OMNI III responds to switch

1. Ensure speaker cable is connected to power

Press, but key press tone fails to

supply assembly.

sound.

2. If problem persists, replace speaker assembly. 3. If problem persists, replace power supply PCB.

3. Audible alarm does not sound.

1. Verify alarm volume setting in Alarm/Limits menu. 2. Ensure speaker cable is connected to power supply assembly. 3. If problem persists, replace speaker assembly. 4. If problem persists, replace main PCB.

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7.6.3

Operational Performance

Table 7-5 lists recommended actions to address problems related to operational performance.

1.

Table 7-5: Operational Performance Problems Condition Recommended Action Monitor appears to be 1. Ensure internal ECG, temperature, and SPO2

operational,

but

physiological

cables are connected to main PCB. Ensure hoses in

values are suspect or nonexistent.

pneumatic system are properly connected, and NIBP pump motor is connected to power supply PCB. 2. If problem persists, replace main PCB. 3. If problem persists, replace TFT screen.

2.

ECG

measurement

has

1. Check the “HR CALCULATE SOURCE” item’s

waveforms display, but no heart

lead selection in the “ECG setup” menu.

rate value displays.

2. Check whether the QRS waveform is smooth and evident.

3. NIBP module can’t be inflated

1. Check whether the pump is bad. 2. Check the NIBP module’s power supply.

4. Inflation pressure can’t reach

1. The maximum inflation pressure value cannot

the normal level.

exceed 150mmHg (20kPa). 2. Check whether the pump is bad. 3. Check whether there has an air leakage trouble. If it exists, check whether the valves, cuff and relevant connectors work normally.

5. Air leak

Air leakage in NIBP cuff or hose, check all connections and test the cuff tightness using venous stasis.

6. NIBP Signal weak

NIBP weak or unstable oscillation signal due to: 1. Improper cuff position or attachment, small air leakage. 2. Weak or abnormal blood circulation. 3. Slow heart rate associated with artifacts. 4.

Patient

is

moving

or

disturbed

during

measurement. 7.

Recorder

advance.

paper

will

not

1. Open recorder door and check paper is present. Press recorder module firmly into monitor to ensure recorder module is fully engaged with connector on main PCB.

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Service Manual for OMNI III

2. Cycle power on monitor. Recorder should execute a line feed at conclusion of power up sequence. 3. If problem persists, ensure main ribbon cable is connected to recorder PCB, power supply, and main PCB. 4. If problem persists, replace recorder. 5. If problem persists, replace recorder PCB. 6. If problem persists, replace main PCB. 8. Recorder paper will advance,

1. Open recorder door and check paper is oriented

but paper remains blank when

correctly; paper should exit from bottom of roll. See

recording should be present.

user’s manual for an illustration of correct paper orientation. 2. If problem persists, replace recorder module.

7.6.5 Serviceable Hardware Error Messages

The error messages that correspond to hardware problems, and the recommended actions to take should such an error encountered. Table 7-6: Serviceable Hardware Error Messages Messages

Recommended

SPO2 Com Error

SPO2 communication trouble 1. Ensure SPO2 module is properly connected with relevant periphery modules. 2. Check the power supply to the SPO2 PCB. 3. Replace SPO2 module. 4. If problem persists, replace main PCB.

ECG Com Err

ECG communication trouble 1. Ensure ECG module is properly connected with relevant periphery modules. 2. Check the power supply to the ECG PCB. 3. Replace ECG module section. 4. If problem persists, replace ARM-FGPA PCB.

Searching For Pulse. . . Monitor is searching for pulse oximetry signal. Lead off

1. The relevant wire is disconnected or off the patient. 2. If lead I is lead off, check whether lead RA and lead LA are attached well. 3. If all leads are lead off, check the lead RL is attached well.

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Service Manual for OMNI III

Or replace the main PCB. Cuff Error

Ensure the cuff’s type is correct.

Reset error！

1. Replace NIBP module. 2. If problem persists, replace main PCB. 1. Replace NIBP module.

Zero reset error！

2. If problem persists, replace main PCB. Serial error

1. Replace NIBP module. 2. If problem persists, replace main PCB.

Search Too Long

Monitor searches the pulse oximetry signal for a long time. 1. Check whether the SPO2 sensor’s LED is lit, when the sensor is clipped a finger, this LED should lit normally. Otherwise it is flashed. 2. Reapply the SPO2 sensor. 3. Replace the SPO2 transducer.

NIBP selfcheck error！

Replace NIBP module.

NIBP inter error！

Replace NIBP module.

Patient type error！

Ensure the cuff’s type is correct.

ERAM Error, Restart ...!!

Try

Error: EEPROM timeout! Error: Flash Timeout!

to

Fault ERAM circuit on the main board. Contact authorized service personnel.

I2C

Fault EEPROM I2C circuit on the main board. Contact authorized service personnel. Fault flash IC on the main board. Contact authorized service personnel.

Recorder UnLink！

1. Printer is not online or is not turned on. 2. Printer cable is loose or broken.

Recorder NOT ready

1. Printer is not responding. 2. See Recorder UnLink！ ！

- 35 -

SECTION 8: SPECIFICATIONS PHYSICAL DIMENSIONS & WEIGHT Base Unit: 309mm H×365mm W×159mm D Weight:

7.0kgs

APPLICATION Neonatal, pediatric and adult patients PEFORMANCE SPECIFICATIONS Display: 15’ color TFT Resolution: 1024×768 Trace:

8 waveforms ECG (I, II, III, aVR, aVL, aVF, V1-V6), PLETH, RESP

Indicator:

Alarm indicator AC and DC power supply indicator QRS beep and alarm sound

Trend time: 72 hours

ECG Input:

5-lead ECG wires and standard AAMI line for connection

Lead Choice:

I，II，III，aVR，aVF，aVL，V

Gain Choice:

×0.5，×1.0，×2.0

Frequency Characteristic: 0.67～40Hz ECG Waveforms:

7 channels

Penetration Voltage:

4000VAC 50/60Hz

Sweep Speed:

12.5, 25 and 50 mm/s

HR Display Range:

30～300bpm

Accuracy:

±5% or ±2bpm, whichever is greater

Alarm Limit Range Setting upper limit: 80～400bpm lower limit: 20～150bpm

RESP Measure Method:

RA-LL impedance

Range:

0～120 rpm

Accuracy

±3 rpm

Alarm Upper-lower Limit Setting upper limit: 6～120 rpm， lower limit:

3～120 rpm

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Service Manual for OMNI III

Sweep Speed:

12.5 and 25 mm/s

NIBP Measuring Technology:

automatic oscillating measurement

Cuff Inflating: