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CASMED 740 Service Manual

Vital signs monitor
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CASMED 740
Vital Signs Monitor

Service Manual

21-02-0174 REV. 02 05/08

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Summary of Contents for CASMED 740

  • Page 1: Service Manual

    CASMED 740 Vital Signs Monitor Service Manual 21-02-0174 REV. 02 05/08...
  • Page 2 21-02-0174 REV. 02 05/08...
  • Page 3 THIS MANUAL REMAINS SUITABLE FOR USE! WARNING: The CASMED 740 Monitor is to be operated by qualified personnel only. Before use, carefully read this manual, including accessory directions for use, all precautionary information, and specifications.
  • Page 4 Europe. (800) 227-4414 11 rue E. Zola 38100 (203) 488-6056 Grenoble. France Fax: (203) 488-9438 E-Mail: custsrv@casmed.com sales@casmed.com techsrv@casmed.com Web: Should service be required, contact the www.casmed.com dealer in the country of purchase. Copyright 2003 CAS Medical Systems, Inc. All rights reserved. No part of this manual may be reproduced without the written permission of CAS Medical Systems, Inc.

  • Page 5: Table Of Contents

    CASMED 740 MONITOR SERVICE MANUAL TABLE OF CONTENT INTRODUCTION AND INTENDED USE ............11 INTRODUCTION..................... 11 BRIEF DEVICE DESCRIPTION................11 PATIENT ENVIRONMENT..................12 MANUAL INFORMATION ..................13 REVISION HISTORY ..................13 MANUAL OVERVIEW ..................14 INTENDED AUDIENCE ..................14 DEFINITION OF TERMS .................. 14 RELATED DOCUMENTS..................
  • Page 6 CASMED 740 MONITOR SERVICE MANUAL MONITOR CONFIGURATION ................45 ENTERING THE MONITOR CONFIGURATION MENU ........45 SAVING YOUR CHANGES................45 SOFTWARE REVISIONS ................. 46 SETTING THE LANGUAGE................46 SELECTING THE PATIENT MODE ..............47 SELECTING THE POWER-OFF DELAY TIME..........47 SELECTING THE TEMPERATURE SCALE .............
  • Page 7 ERROR MESSAGES ON THE MESSAGE WINDOW ........74 11. MAINTENANCE PROCEDURES ..............77 INTRODUCTION..................... 77 EQUIPMENT REQUIRED ................. 77 BATTERY CHARGE ..................78 TURNING THE CASMED 740 MONITOR “ON”..........78 DISPLAYING THE TIME ................... 79 ALARM AUDIO....................79 AUDIO...................... 80 CONFIGURATION MODE TESTS................80 ENTERING THE TEST MODE................
  • Page 8 CASMED 740 MONITOR SERVICE MANUAL MAIN MONITOR SERVICE PROCEDURES ............92 PRIOR TO DISASSEMBLY................92 MONITOR DISASSEMBLY ................93 MONITOR ASSEMBLY ..................93 REPLACING THE POWER SUPPLY MODULE ..........94 REPLACING THE NIBP MODULE..............95 REPLACING THE SpO MODULE..............96 REPLACING THE TEMPERATURE MODULE ..........
  • Page 9 Figure 7: Right Side Panel View .................... 44 Figure 8: DB9 Male Connector Pin Layout ................54 Figure 9: Model 740 Monitor Overall Block Diagram ............. 61 Figure 10: No Monitor Power ....................62 Figure 11: Power Up Response..................... 63 Figure 12: SpO Trouble Shooting ..................
  • Page 10 CASMED 740 MONITOR SERVICE MANUAL TABLES Table 1: Parts of the System....................12 Table 2: Monitor Configurations..................... 15 Table 3: Software Revisions ....................46 Table 4: DB9 Pin Out ......................54 Table 5: SureTemp® Temperature Error Codes..............72 Table 6: SureTemp® Plus Temperature Error Codes............73 Table 7: Error Messages on the Message Window ...............

  • Page 11: Introduction And Intended Use

    (AC Line Power or +12 VDC). The CASMED 740 Monitor can be set to operate in one of nine (9) different languages: English, German, French, Italian, Spanish, Dutch, Swedish, Portuguese or Norwegian. The message window can display various system alarm messages.

  • Page 12: Patient Environment

    Axillary temperature readings may only be taken in the Neonate monitoring mode. PATIENT ENVIRONMENT The CASMED 740 Monitor has been tested with specific parts of the “system” used within the Patient Environment. Figure 1, defines the Patient Environment. Figure 1: Patient Environment The parts of the CASMED 740 Monitor “system”...

  • Page 13: Manual Information

    The revision letter identifies the document’s update level. The revision history of this document is summarized below. Revision History Revision Date Comments 07/2003 Initial Release 07/2007 Update artwork and text to CASMED. Add SureTemp Plus 05/2008 Update EU AR and trademarks 21-02-0174 REV. 02 05/08...

  • Page 14: Manual Overview

    CASMED 740 MONITOR SERVICE MANUAL MANUAL OVERVIEW This manual contains information for diagnosing and servicing the CASMED 740 Monitor to board level without the necessity of electrical schematics. Only qualified service personnel should service this product. It is the user’s responsibility to ensure that the product is properly maintained and that the monitor is in safe and proper operating condition before being put into use.

  • Page 15: Monitor Configurations

    CASMED 740 MONITOR SERVICE MANUAL MONITOR CONFIGURATIONS CASMED 740-1 MAXNIBP®, 100-240V, 50/60HZ, AC Power Supply and Battery CASMED 740M-1 MAXNIBP®, 12VDC Power input with Battery, Mount included CASMED 740-2MS MAXNIBP® and Masimo SpO , 100-240V, 50/60HZ, AC Power Supply and Battery CASMED 740M-2MS MAXNIBP®...
  • Page 16 CASMED 740 MONITOR SERVICE MANUAL This page is intentionally left blank 21-02-0174 REV. 02 05/08...

  • Page 17: Service Policy

    The CASMED 740 Monitor is warranted for a period of twenty-four (24) months. All products, excluding printers, if applicable, are warranted to be free from functional defects in materials...

  • Page 18: Extended Warranty Program

    RESPECT TO THE PRODUCT OR PARTS THEREOF. EXTENDED WARRANTY PROGRAM CAS Medical Systems offers an Extended Warranty Program for the CASMED 740 Monitor. A one (1) year Extended Warranty, on the monitor, is available at either the time of purchase or within two (2) years of the purchase date.

  • Page 19: Safety Measures And Warnings

    CASMED 740 MONITOR SERVICE MANUAL 3. SAFETY MEASURES AND WARNINGS WARNING: Do not use this instrument for any purpose other than specified in this manual. Doing so will invalidate the monitor’s warranty. Do not connect more than one (1) patient to the monitor.
  • Page 20 ACCURACY – If the accuracy of any measurement does not seem reasonable, first check the patient’s vital signs by alternate means and then check the CASMED 740 Monitor for proper functioning. CABLES – Route all cables away from patient’s throat to avoid possible strangulation.
  • Page 21 CASMED 740 MONITOR SERVICE MANUAL CAUTION: Before each use, make sure that the monitor default alarm settings are appropriate for the specific patient being monitored. Pressing the front panel keyswitch with a sharp or pointed instrument may permanently damage the keyswitch. Press the keyswitch using only your finger.
  • Page 22 CASMED 740 MONITOR SERVICE MANUAL CAUTION: Some sensors may not be appropriate for a particular patient. If at least ten (10) seconds of one bar pulses cannot be observed for a given sensor, change sensor location or sensor type until this condition is achieved.

  • Page 23: Automatic Safety Features

    The CASMED 740 Monitor provides “DRIP-PROOF” level of protection from ingress to moisture. Do not expose the CASMED 740 Monitor to extreme moisture levels such as direct exposure to rain. Exposure to extreme moisture levels may cause incorrect or inaccurate performance, or device failure during or after exposure.
  • Page 24 CASMED 740 MONITOR SERVICE MANUAL Whenever the power is disconnected from the monitor and the monitor is not allowed to shut down in an orderly fashion, the monitor, when re-powered alerts the user. CAUTION: Regardless of these safety features, always be sure to check that there are no signs of prolonged impairment of circulation and that the monitor is functioning properly.

  • Page 25: Declaration Of Conformity

    Electronic Emissions and Immunity The Model 740 Monitor is intended for use in the electromagnetic environment specified below. The customer or the user of the Model 740 Monitor should assure it is used in such an environment. Emissions Test Compliance Electromagnetic Environment RF emissions –...
  • Page 26 RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the Model 740 Monitor is used exceeds the applicable RF compliance level above, the Model 740 Monitor should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or relocating the Model 740 Monitor.

  • Page 27: Symbols

    Class II equipment (if applicable) The CASMED 740 Monitor is normally a Class I device. The CASMED 740 Monitor becomes a Class II device when it is mounted and connected to a DC power source (740M). 21-02-0174 REV. 02 05/08...
  • Page 28 SYMBOLS (CONT.) IPX1 Protection against ingress of water. Symbol used on the rear panel of the CASMED 740M, to indicate the polarity of the DC power input. Direct Current Indicates protection against the effects of the discharge of a cardiac defibrillator.
  • Page 29 CASMED 740 MONITOR SERVICE MANUAL SYMBOLS (CONT.) These symbols appear on the front panel in place of text. ON/STANDBY – Turns “ON” the Monitor’s display. NOTE: Monitors shipped earlier displayed the symbol SILENCE/RESET START/STAT STOP CYCLE TIME HISTORY VOLUME ALARM LIMITS...
  • Page 30 CASMED 740 MONITOR SERVICE MANUAL SYMBOLS (CONT.) ARROW UP ARROW DOWN Bar graph display of SpO signal strength. ♥ Pulse Rate Display ADULT A lighted LED used to indicate NIBP operating in Adult Mode. A lighted LED used to indicate NIBP operating in Neonatal Mode.
  • Page 31 CASMED 740 MONITOR SERVICE MANUAL SYMBOLS (CONT.) These symbols appear on the battery pack in place of text. Recycling suggested (see General Notes). Located on the Smart Pack batteries, if available, a set of four (4) LEDs used to indicate the approximate amount of charge remaining in the battery pack.
  • Page 32 CASMED 740 MONITOR SERVICE MANUAL SYMBOLS (CONT.) This symbol appears on the printer in place of text. WARNING: Before removing, read instructions located in User’s Manual. 21-02-0174 REV. 02 05/08...

  • Page 33: Monitor Controls

    CASMED 740 MONITOR SERVICE MANUAL 6. MONITOR CONTROLS FRONT PANEL Front Panel Keyswitch panel with English text Front Panel Keyswitch panel, Symbols only Figure 2: Front Panel Views 21-02-0174 REV. 02 05/08...

  • Page 34: Digital Display And Indicators

    CASMED 740 MONITOR SERVICE MANUAL DIGITAL DISPLAY AND INDICATORS SYSTOLIC Red colored LEDs indicate the Systolic pressure measurement in mmHg mmHg. DIASTOLIC Red colored LEDs indicate the Diastolic pressure measurement in mmHg mmHg. Red colored LEDs indicate the Mean Arterial Pressure in mmHg mmHg (if enabled).
  • Page 35 CASMED 740 MONITOR SERVICE MANUAL A tri-colored visual indicator used to display the status of the power source and battery condition. The status of the LED is: • GREEN = Monitor is connected to a main power source • ORANGE = In Use on Battery •...

  • Page 36: Front Panel Controls

    CASMED 740 MONITOR SERVICE MANUAL FRONT PANEL CONTROLS Figure 3: Front Controls 21-02-0174 REV. 02 05/08...
  • Page 37 CASMED 740 MONITOR SERVICE MANUAL ON/STANDBY: Press once, turns “ON” the CASMED 740 Monitor’s display (if it was OFF). To turn the monitor’s display “OFF”, either press once or press and hold for two (2) seconds. Based on the selection for Power-Off Delay Time in the Configuration menu.
  • Page 38 CASMED 740 MONITOR SERVICE MANUAL Allows the user to select a time interval for Automatic blood CYCLE pressure measurement. TIME: Automatic measurement cycles of 1, 2, 3, 4, 5, 10, 15, 30, 60, or 90 minutes may be chosen. Also used to read the monitor’s current time (press and hold for two (2) seconds).

  • Page 39: Infrared (Ir) Data Port

    CASMED 740 MONITOR SERVICE MANUAL Allows backwards Adjustment (Auto Cycle, History, Inflation ARROW Pressure, Limits and Monitor Configuration). DOWN: Press to cycle through menu selections or press and hold for quicker advance. Sets the patient mode to Neonate when pressed and hold while the monitor is being turned on.

  • Page 40: Rear Panel

    CASMED 740 MONITOR SERVICE MANUAL REAR PANEL SureTemp® SureTemp® Plus Figure 4: 740 Rear Panel View 21-02-0174 REV. 02 05/08...

  • Page 41: Ac / Dc Connection

    BATTERY COMPARTMENT The CASMED 740 Monitor is equipped with a 7.2 Volt, 3700 mAhr battery pack that, when fully charged, is capable of taking 100 NIBP readings when the monitor is set in the 5-minute Automatic Mode.

  • Page 42: Equipotentiality Ground Post

    This terminal can be used to provide an auxiliary ground for the monitor. EXTERNAL DEVICE INTERFACING The CASMED 740 Monitor is available with a combined optional DB9 RS232 output and Nurse Call interface. The RS232 output maybe used to interface to the Citizen CMP-10 Mobile Printer or another serial printing device.

  • Page 43: Cuff Hose Connection

    CASMED 740 MONITOR SERVICE MANUAL CUFF HOSE CONNECTION The inflation hose is connected to the monitor where the MAXNIBP logo is located as shown in Figure 6. The hose must be connected to the cuff prior to use. NOTE: An optional six (6) foot inflation hose is available when monitoring in the NEO mode. Refer to the Accessories section in the User’s Manual for part number information.

  • Page 44: Right Side View

    CASMED 740 MONITOR SERVICE MANUAL RIGHT SIDE VIEW SureTemp SureTemp Plus Figure 7: Right Side Panel View TEMPERATURE HOLDER (if equipped) Store the Temperature Probe and Temperature Probe Covers in their holder locations when it is not in use. NOTE: Insure that the Temperature probe is secured in its holder.

  • Page 45: Monitor Configuration

    CASMED 740 MONITOR SERVICE MANUAL 7. MONITOR CONFIGURATION The Monitor Configuration section allows the user to configure the CASMED 740 Monitor. Once entered, the user can: • Review the monitor’s internal Software Revisions • Set the Operating Language • Select the Patient Mode •...

  • Page 46: Software Revisions

    STOP pushbutton to exit to the “Ready” mode. SETTING THE LANGUAGE The CASMED 740 Monitor can operate in one (1) of nine (9) languages: English, German, French, Italian, Spanish, Dutch, Swedish, Portuguese or Norwegian. To configure the monitor’s operating language, first enter the monitor’s Configuration menu.

  • Page 47: Selecting The Patient Mode

    NOTE: Altering the patient mode automatically sets the parameter High and Low Limits to the appropriate patient default limits and affects the NIBP mode. Refer to the CASMED 740 Monitor User’s Manual for more information. Press one of the NEXT programmed pushbutton keys to advance onto the next menu or use the STOP pushbutton to exit to the “Ready”...

  • Page 48: Selecting The Temperature Scale

    CASMED 740 MONITOR SERVICE MANUAL SELECTING THE TEMPERATURE SCALE (available if Temperature is installed) The CASMED 740 Monitor can display Temperature readings in either the Celsius or Fahrenheit scales. To select the operating Temperature Scale, first enter the monitor’s Configuration menu. Refer to Page 45, ENTERING THE MONITOR CONFIGURATION MENU.

  • Page 49: Permanent Audio Alarm Silence

    CASMED 740 MONITOR SERVICE MANUAL PERMANENT AUDIO ALARM SILENCE When the monitor is configured to the Permanent Audio Alarm Silence setting, use the SILENCE/RESET pushbutton to “enable or disable” audio alarms. The SILENCE visual indicator, located on the front panel of the monitor will flash at a rate of one (1) second “ON” and one (1) second “OFF”...

  • Page 50: Set The Spo Alarm Delay

    STOP pushbutton to exit to the “Ready” mode. SETTING THE TIME The CASMED 740 Monitor’s Time value is set for Eastern Time and is set at the factory. To set the Time, first enter the monitor’s Configuration menu. Refer to Page 45, ENTERING THE MONITOR CONFIGURATION MENU.

  • Page 51: Daylight Saving Time Option

    STOP pushbutton to exit to the “Ready” mode. DAYLIGHT SAVING TIME OPTION The CASMED 740 Monitor can be configured to automatically respond to time changes associated with Daylight Saving Time. The monitor can be configured to one of five Daylight Saving Time Option settings.
  • Page 52 CASMED 740 MONITOR SERVICE MANUAL This page is intentionally left blank 21-02-0174 REV. 02 05/08...

  • Page 53: External Device Interfacing

    8. EXTERNAL DEVICE INTERFACING OVERVIEW The CASMED 740 Monitor is capable of interfacing to an external Serial printer or have the ability to interface to a Nurse Call System if the DB9 RS232 option is available. Both connections are made through the DB9 connector located on the rear panel of the monitor.

  • Page 54: Figure 8: Db9 Male Connector Pin Layout

    CASMED 740 MONITOR SERVICE MANUAL WARNING: The interconnection of auxiliary equipment to the Nurse Call Interface may increase the total leakage current. The user must read the Warning on Page 20 under LEAKAGE CURRENT TEST and follow the guidance given.

  • Page 55: Routine Maintenance

    CASMED 740 MONITOR SERVICE MANUAL 9. ROUTINE MAINTENANCE CLEANING CLEANING OVERVIEW WARNING: Do not, under any circumstances, perform any testing or maintenance on the monitor while the monitor is being used to monitor a patient. CAUTION: Do not open the monitor to clean or repair it. Contact CAS Medical System for service needs.

  • Page 56: The Display

    CASMED 740 MONITOR SERVICE MANUAL THE DISPLAY CAUTION: Use care when cleaning the display. Scratches may occur. Occasionally, as needed, clean the display window using a soft, lint-free cloth sprayed with an alcohol free glass cleaner. Do not use either isopropyl alcohol or solvent to clean the display.

  • Page 57: Pneumatic Tubing

    CASMED 740 MONITOR SERVICE MANUAL PNEUMATIC TUBING CAUTION: If the hose should become grossly contaminated with blood or other bodily fluids, it should be discarded. NOTE: CAS does not recommend submersion of the hose. Liquid should not be permitted to enter the hose because instrument damage may occur.

  • Page 58: Temperature Probes

    CASMED 740 MONITOR SERVICE MANUAL TEMPERATURE PROBES CAUTION: Do not soak or immerse the probe or its cable in any liquid solution. Do not attempt to sterilize. The temperature probe should periodically be cleaned by wiping with an alcohol dampened cloth or wipe, warm water, or properly diluted non-staining disinfectant.

  • Page 59: Safety Checks

    CAS Medical Systems recommends replacing the monitor’s battery every two (2) years. When the CASMED 740 Monitor is going to be stored for six (6) months or more, remove the battery prior to storage. To remove the battery, refer to Section REPLACING THE MONITOR BATTERY.
  • Page 60 CASMED 740 MONITOR SERVICE MANUAL This page is intentionally left blank 21-02-0174 REV. 02 05/08...

  • Page 61: 10. Troubleshooting

    CASMED 740 MONITOR SERVICE MANUAL 10. TROUBLESHOOTING SYSTEM TROUBLESHOOTING Figure 9: Model 740 Monitor Overall Block Diagram 21-02-0174 REV. 02 05/08...

  • Page 62: Figure 10: No Monitor Power

    CASMED 740 MONITOR SERVICE MANUAL Can't Turn The Monitor "ON" AC or Battery Battery operating? Ensure Good Outlet Plug in Line Cord and Line Cord Operating? Green Dead or Charging Indicator Disconnected "ON"? Battery Bad / Disconnected Front Failed Electronics...

  • Page 63: Figure 11: Power Up Response

    CASMED 740 MONITOR SERVICE MANUAL Power-Up Response Pass "888" Pass "888" sequence sequence "NIBP Err" "READY" Bad / Disconnected NIBP Module "Err" "Err" "Low Batt" in in SpO Display in Temperature Message Window Window Display Window Bad / Charge Monitor for...

  • Page 64: Figure 12: Spo 2 Trouble Shooting

    CASMED 740 MONITOR SERVICE MANUAL No SpO Response Check for Correct Probe Type Masimo, Nellcor, Nonin Sensor LED "ON"? Replace Probe and Re-check If Same Probe Works in Other Monitor, Unit Needs Service Figure 12: SpO Trouble Shooting 21-02-0174 REV. 02 05/08...

  • Page 65: Figure 13: Temperature Trouble Shooting

    CASMED 740 MONITOR SERVICE MANUAL Does Not Take A Temperature Measurement Remove Temperature Probe and Disconnect From Monitor "Prb" Shown? Use Calibration Key to Check Measurement Function Temperature Function Is Out Replace Bad Temperature Of Service. Probe Replace Temperature Module Figure 13: Temperature Trouble Shooting 21-02-0174 REV.

  • Page 66: Theory Of Operation

    Serial Interface POWER SUPPLIES The input to the 740 Main Control Board comes from either the DC input (J1) or the Battery Input (J2). A Control chip (U6) is responsible for selecting the monitor’s main power source. The DC input, from the Power Supply, always takes priority over the Battery.

  • Page 67: Battery Charger

    CASMED 740 MONITOR SERVICE MANUAL Chip I/O supply voltage for the DSP Controller (U20). +3.3V The +5 volts output of the switching regulator (U1) goes into a voltage regulator (U2) to supply the +3.3 volts. Core operating voltage for the DSP Controller (U20).

  • Page 68: Digital Signal Processor Controller

    The Motorola DSP56F827, is Digital Signal Processor (DSP U20) and is the Main Controller of the CASMED 740 Monitor. The controller has 64K of program flash, 4K of data flash, 1K program ram, 4K of data ram and operates off an external 4 MHz crystal. The DSP features are PLL, 2 SPI ports, TOD, watchdog timer, quad timer, 16 dedicated I/O, 48 shared I/O, 64 muxed I/O, interrupt controller, 8 programmable chip selects and 32 external bus signals.
  • Page 69 CASMED 740 MONITOR SERVICE MANUAL Blood Pressure Monitoring The Blood Pressure Module is plugged into J4 of the Main Control Board. The power (+VND) of the Blood Pressure Module is controlled by an output pin of the DSP (U20 pin 36). The Blood Pressure Module is read by the DSP (U20) thru the serial port (TXD1 and RXD1).

  • Page 70: Error Messages

    CASMED 740 MONITOR SERVICE MANUAL ERROR MESSAGES The CASMED 740 Monitor displays a variety of messages to aid the user in monitor operation. If a troubleshooting message is displayed during a measurement, follow the actions listed to correct the situation.

  • Page 71: Temperature User Messages

    “Prb” is shown in the TEMP display window. NOTE: Press the SILENCE/RESET pushbutton to clear the TEMP display. If the Temperature probe well is removed from the top of CASMED 740 Monitor’s Temperature module, the message “Prb” is shown in the TEMP display window. NOTE: Press the SILENCE/RESET pushbutton to clear the TEMP display.

  • Page 72: Table 5: Suretemp® Temperature Error Codes

    CASMED 740 MONITOR SERVICE MANUAL ERROR CLASS ERROR DESCRIPTION Transmit buffer overflow Probe Probe heater energy accumulation too high Probe Probe a/d pulse width out of range Probe Adaptive probe gain too high or too low Ambient Ambient temperature above 104 °F Ambient Ambient temperature below 60.8 °F...

  • Page 73: Miscellaneous Temperature Troubleshooting

    The switch should be replaced when a complaint of intermittent temperature readings is received. According to the manufacturer of the temperature technology used in the CASMED 740 monitor, the life expectancy of the temperature probe is 6000 cycles. Depending on its usage and to prevent future temperature problems, it is recommended to replace the probe at this interval.

  • Page 74: Error Messages On The Message Window

    CASMED 740 MONITOR SERVICE MANUAL ERROR MESSAGES ON THE MESSAGE WINDOW The CASMED 740 Monitor displays a variety of messages on the Message Window to aid the user. ERROR POSSIBLE CAUSE POSSIBLE SOLUTION MESSAGE "Air Leak" Air leak in cuff/hose/monitor Check that the cuff/hose/monitor connection is pneumatic system.
  • Page 75 CASMED 740 MONITOR SERVICE MANUAL ERROR MESSAGES ON THE MESSAGE WINDOW (cont.) ERROR POSSIBLE CAUSE POSSIBLE SOLUTION MESSAGE "Motion" There was too much extremity Measurements can be obtained when there is motion for the monitor to limited extremity movement, but the accurately complete the NIBP measurement time may be extended.
  • Page 76 CASMED 740 MONITOR SERVICE MANUAL ERROR MESSAGES ON THE MESSAGE WINDOW (cont.) ERROR POSSIBLE CAUSE POSSIBLE SOLUTION MESSAGE "RangeErr" The systolic reading exceeds the Repeat measurement. measurement range of 255 mmHg in the Adult mode or 135 mmHg in If the message is displayed again, use another the Neonatal mode.

  • Page 77: 11. Maintenance Procedures

    All tests can be performed without removing the CASMED 740 Monitor’s cover. If the CASMED 740 Monitor fails to perform as specified in any test, repairs must be made to correct the problem before the monitor is returned to the user.

  • Page 78: Battery Charge

    The one (1) second Configuration Setup Test is a visual indication of the CASMED 740 Monitor’s current configuration. It consists of the monitor’s Model number and a description of its power source (740 or 740M), an Installed Parameter Code (1, 2, 3) and a one (1) or two (2) character module configuration code.

  • Page 79: Displaying The Time

    CASMED 740 MONITOR SERVICE MANUAL The four (4) second Power On Self-Test consists of: • All equipped parameter segments are lit for one (1) second. • All High Alarm Values are displayed for one (1) second in their corresponding numeric display window and an audible tone is emitted from the monitor’s internal speaker.

  • Page 80: Spo 2 Audio

    CASMED 740 MONITOR SERVICE MANUAL AUDIO (available if SpO is installed) Perform the following procedure to verify the audio range for the SpO volume. Press the AUDIO pushbutton twice. Verify a Key Click tone is heard each time and the Message Window displays “SpO2...

  • Page 81: Exit The Test Mode

    CASMED 740 MONITOR SERVICE MANUAL EXIT THE TEST MODE When you have completed with the Test Mode, press the STOP pushbutton to exit. The Message Window will briefly display “Saving” and return to the “Ready” state. LED CHECK Perform the following procedure to verify the functionality of all front panel LED displays and visual indicators.

  • Page 82: System Pressure

    CASMED 740 MONITOR SERVICE MANUAL SYSTEM PRESSURE Assemble the Calibration Kit according to the diagram provided in the P9 kit. Remove the manometer tubing from the inflation bulb. Connect the open ended tubing of the T-connector to the inflation bulb.

  • Page 83: Pneumatic Pressure Checks

    (3) times and will return to the Calibration Check function after five (5) seconds. Due to the volume differences of the hoses offered with the CASMED 740 Monitor, the monitor may incorrectly fail the Plug Tube check. Should the monitor fail the Plug Tube Pressure Check, obtain a 500 ml Pressure Cylinder and follow the 500 ml Pressure Check.

  • Page 84: Nibp Simulator Check

    CAS Medical Systems for service. NIBP SIMULATOR CHECK Exit the Test Mode and connect the CASMED 740 Monitor to a NIBP Simulator. Set the simulator to a pressure value of 120/80, 40 bpm, 100% gain. Press the START pushbutton and allow the monitor to take the NIBP measurement.

  • Page 85: Oximetry Calibration Check

    Do not touch the monitor when performing these tests. LEAKAGE Disconnect all accessories from the monitor. Plug the AC power cord from the CASMED 740 Monitor into the Electrical Safety Analyzer. Turn the CASMED 740 Monitor “ON”. Perform a Leakage Check per manufacturer’s instructions. Verify the monitor’s leakage to be less than 100 micro-amps.

  • Page 86: Hypot (Monitor)

    Do not touch the monitor when performing this test. Disconnect all accessories from the monitor. Plug the AC power cord from the CASMED 740 Monitor into the Hypot Tester. WARNING: Do not turn the monitor “ON” during a hypot test.

  • Page 87: Data Sheet

    Zip: Battery Charge Verify, the Battery Power Visual Indicator is lit. Pass ( Fail ( Turning the CASMED 740 Monitor “ON” Monitor displays Configuration for one second. Pass ( Fail ( All equipment parameters are lit for one second. Pass (...
  • Page 88 CASMED 740 MONITOR SERVICE MANUAL LED Check Verify, all front panel LED displays and visual indicators are lit. Pass ( Fail ( +12 Volt Power Supply Check Verify, the voltage reading to be 12 +/- 0.50. Pass ( Fail ( System Pressure Deflate system pressure to 0 mmHg.

  • Page 89: 12. Service Procedures

    This section discusses the replacement of major assemblies found inside the CASMED 740 Monitor. WARNING: Before attempting to open or disassemble the CASMED 740 Monitor, disconnect the power cord from the monitor and remove the battery. CAUTION: Observe ESD (electrostatic discharge) precautions when working within the unit.

  • Page 90: Replacing The Monitor Battery

    CASMED 740 MONITOR SERVICE MANUAL REPLACING THE MONITOR BATTERY A part number for the battery can be found on the label located on the inside panel of the battery pack. When the battery fails to hold a charge it will need to be replaced.

  • Page 91: Changing The Fuses

    CHANGING THE FUSES CASMED 740 The CASMED 740 Monitor uses a dual fuse power input receptacle. The receptacle incorporates fuses in the hot and neutral AC input lines that are user serviceable. CAUTION: For continued protection against fire hazard, replace only with identically rated fuses.

  • Page 92: Casmed 740M

    The CASMED 740M Monitor uses a single fuse located inside the monitor on the DC-DC Converter Board. The one (1) fuse for the CASMED 740M Monitor is rated at 125VAC, 3.15A, Time Lag. Refer to Section 14, SPARE PARTS for part number information.

  • Page 93: Monitor Disassembly

    MONITOR DISASSEMBLY Complete the steps in Prior to Disassembly. Set the CASMED 740 Monitor face down onto a soft surface being careful not to scratch the front display. If your monitor is equipped with either a Temperature Module or a RS232 Module, remove the one (1) screw that secures the module to the monitor’s rear case.

  • Page 94: Replacing The Power Supply Module

    CASMED 740 MONITOR SERVICE MANUAL REPLACING THE POWER SUPPLY MODULE The Power Supply Module is part of the Rear Case Assembly. Removal Complete the steps in Prior to Disassembly and Monitor Disassembly. Disconnect the two (2) harness assemblies from the Power Supply Module.

  • Page 95: Replacing The Nibp Module

    CASMED 740 MONITOR SERVICE MANUAL REPLACING THE NIBP MODULE The NIBP Module is part of the Front Case Assembly. Removal Complete the steps in Prior to Disassembly and Monitor Disassembly. Disconnect the NIBP hose from the NIBP connector located on the side panel. Note the location of the hose from the connector to the board.

  • Page 96: Replacing The Spo Module

    CASMED 740 MONITOR SERVICE MANUAL REPLACING THE SpO MODULE The SpO Module is part of the Front Case Assembly. Removal Complete the steps in Prior to Disassembly and Monitor Disassembly. Disconnect the cable assembly from the SpO board to the Main Control board.

  • Page 97: Replacing The Temperature Module

    CASMED 740 MONITOR SERVICE MANUAL REPLACING THE TEMPERATURE MODULE SureTemp Temperature The Temperature Module is part of the Front Case Assembly. Removal Complete the steps in Prior to Disassembly and Monitor Disassembly. Remove the Temperature Module by gently lifting the PCB from the four (4) nylon standoff support posts while pinching together the prong tips.

  • Page 98: Replacing The Main Control Board

    CASMED 740 MONITOR SERVICE MANUAL REPLACING THE MAIN CONTROL BOARD The Main Control board is part of the Front Case Assembly. Removal Complete the steps in Prior to Disassembly and Monitor Disassembly. Complete the steps in Replacing the NIBP module to remove the NIBP module.

  • Page 99: Replacing The Front Panel Keyswitch

    CASMED 740 MONITOR SERVICE MANUAL Secure the board to the standoffs with the hardware previously removed. Re-install the NIBP Board and any remaining option boards previously removed. Finish assembling the monitor by following the steps in section Monitor Assembly. REPLACING THE FRONT PANEL KEYSWITCH The Front Panel Keyswitch is part of the Front Case Assembly.

  • Page 100: Module Service Procedures

    CASMED 740 MONITOR SERVICE MANUAL Installation Remove the liner from the rear of the keyswitch. Feed the ribbon cable through the slot on the Front Panel and carefully position the keyswitch into the recess on the Front Case. Apply even pressure across the face of the keyswitch to secure it in place.

  • Page 101: Replacing The Temperature Interface/Switch Board

    CASMED 740 MONITOR SERVICE MANUAL Installation If necessary, re-connect the cable assembly from the Temperature Interface Board to J2 on the RS232/Nurse Call Interface Board. Install the RS232/Nurse Call Interface Board into the Module case and secure it with the three (3) screws previously removed.

  • Page 102: Suretemp® Plus Module

    CASMED 740 MONITOR SERVICE MANUAL Installation Install the Temperature Interface/Switch Board into the Module case and secure it with the one (1) screw previously removed. Finish assembling the Module by following the steps in the Installation section of Replacing the RS232/Nurse Call Interface Board.

  • Page 103: Replacing The Suretemp® Plus Temperature Board

    CASMED 740 MONITOR SERVICE MANUAL Installation Install the RS232/Nurse Call Interface Board into the Module case and secure it with the four (4) screws previously removed. Reconnect the ribbon cable. Place the two case halves together being careful not to pinch the ribbon cable.
  • Page 104 CASMED 740 MONITOR SERVICE MANUAL Installation Install the SureTemp Plus Temperature Board into the Module case and secure it with the four (4) screws previously removed. Reconnect the ribbon cable. Place the two case halves together being careful not to pinch the ribbon cable.

  • Page 105: 13. Schematics

    CASMED 740 MONITOR SERVICE MANUAL 13. SCHEMATICS NIBP BOARD The NIBP Board used in the CASMED 740 Monitor is not user serviceable. No schematic diagram is provided. 21-02-0174 REV. 02 05/08...

  • Page 106: Main Control Board (Suretemp®)

    CASMED 740 MONITOR SERVICE MANUAL MAIN CONTROL BOARD (SureTemp®) Page 1 of 12 21-02-0174 REV. 02 05/08...
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  • Page 118: Main Control Board (Suretemp® Plus)

    CASMED 740 MONITOR SERVICE MANUAL MAIN CONTROL BOARD (SureTemp® Plus) Page 1 of 12 21-02-0174 REV. 02 05/08...
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  • Page 130: Temperature Interface Board

    CASMED 740 MONITOR SERVICE MANUAL TEMPERATURE INTERFACE BOARD 21-02-0174 REV. 02 05/08...

  • Page 131: Nonin Interface Board

    CASMED 740 MONITOR SERVICE MANUAL NONIN INTERFACE BOARD 21-02-0174 REV. 02 05/08...

  • Page 132: Rs 232/Nurse Call Interface Board

    CASMED 740 MONITOR SERVICE MANUAL RS 232/NURSE CALL INTERFACE BOARD Page 1 of 2 21-02-0174 REV. 02 05/08...
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  • Page 134: Rs 232/Nurse Call Interface Board (Suretemp® Plus)

    CASMED 740 MONITOR SERVICE MANUAL RS 232/NURSE CALL INTERFACE BOARD (SureTemp® Plus) Page 1 of 3 21-02-0174 REV. 02 05/08...
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  • Page 137: Dc Converter Board

    CASMED 740 MONITOR SERVICE MANUAL DC CONVERTER BOARD 21-02-0174 REV. 02 05/08...

  • Page 138: Proprietary Boards

    CASMED 740 MONITOR SERVICE MANUAL PROPRIETARY BOARDS Due to the proprietary nature of the Power Supply Board from Condor, the SpO Boards from Masimo, Nellcor and Nonin, and the Temperature Boards from Welch Allyn, the schematics, board layouts and bill of materials could not be placed into this service manual.

  • Page 139: 14. Spare Parts

    CASMED 740 MONITOR SERVICE MANUAL 14. SPARE PARTS PRINTED CIRCUIT BOARDS Part Number Description 03-09-0243 DC Input Board, 740M 03-09-0235 Main Control Board, SureTemp® Plus (Need to provide complete model number and serial number when ordering) 03-09-0262 Main Control Board (Need to provide complete model number and serial...

  • Page 140: Misc Parts

    CASMED 740 MONITOR SERVICE MANUAL MISC PARTS Part Number Description 23-01-0118 Battery Harness Plate 29-01-0300 Case, Front with SpO window 29-01-0294 Case, Front without SpO window 29-01-0295 Case, Rear 29-01-0301 Case, RS232 Module 29-01-0302 Case, Temperature Module 29-01-0326 Case, Temperature Module, SureTemp® Plus...

  • Page 141: 15. Specifications

    CASMED 740 MONITOR SERVICE MANUAL 15. SPECIFICATIONS NIBP MEASUREMENT Characteristic Specification Technique: Oscillometric (MAX NIBP® Technology) Microprocessor software eliminates most ambient noise and motion artifact. Patient Range: Neonate – Adult Blood Pressure Range ADULT Systolic: 30 – 135 mmHg 30 – 255 mmHg Diastolic: 15 –...
  • Page 142 CASMED 740 MONITOR SERVICE MANUAL Characteristic Specification Masimo SET® Type: Functional Oxygen Saturation % Range: 0 - 100% Accuracy: Sensor Accuracy DC-195 70 - 100%, +/-2 digits (1 S.D.) LNOP® Adt LNOP DCI LNOP DCSC LNOP DC1P LNOP DC150 LNOP Pdt...
  • Page 143 CASMED 740 MONITOR SERVICE MANUAL Characteristic Specification Nellcor® OxiMax® Type: Functional Oxygen Saturation % Range: 1 - 100% Accuracy: Sensor Accuracy MAX-A 70 - 100%, +/-2 digits (1 S.D.) MAX-AL MAX-N (Adult) MAX-P MAX-I MAX-FAST SC-A (Adult) Sensor Accuracy OxiCliq A 70 - 100%, +/-2.5 digits (1 S.D.)
  • Page 144 CASMED 740 MONITOR SERVICE MANUAL TEMPERATURE (OPTIONAL) Characteristic Specification Temperature Range: 28.9 to 42.2 °C (84.0 to 108.0 °F) Accuracy: +/-0.1°C (+/-0.2°F), Meets or exceeds ASTM Standards PATIENT ALARMS Patient Parameter Neonatal Limit Range Adult Limit Range High High CASMED 35 –...
  • Page 145 CASMED 740 MONITOR SERVICE MANUAL OPERATING MODES Characteristic Specification Patient: NIBP function in Neonatal or Adult NIBP: Manual, STAT or Automatic (at preset intervals) History: Review of previous measurements %SpO Continuous Monitoring Temperature: Predictive or Continuous Monitoring POWER Characteristic Specification...
  • Page 146 CASMED 740 MONITOR SERVICE MANUAL OPERATING ENVIRONMENT Characteristic Specification Operating Temperature: 0°C to 50°C (32°F to 122°F) Humidity: 15 to 95%, non-condensing Altitude: 10,000 to –1,000 ft (690 – 1050 hPa) Monitors may not meet performance specifications if stored or used outside temperature and humidity ranges.
  • Page 147 CASMED 740 MONITOR SERVICE MANUAL SERIAL INTERFACE Characteristic Specification Interface: Bi-directional serial communication Speed: 9600 for Printer 115200 for CAS Serial Protocol Signal Level: RS232C Data Length: 8 bits Start Bit: 1 bit Stop Bit: 1 bit Parity: None Flow Control:...
  • Page 148 CASMED 740 MONITOR SERVICE MANUAL STANDARDS Accuracy complies with that given in American National Standard for Electronic or Automated Sphygmomanometers, ANSI/AAMI SP10, 2002. Adult blood pressure measurements determined with this device are equivalent to those obtained by an auscultatory blood pressure...

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