Welch Allyn PROPAQ CS Service Manual
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Welch Allyn PROPAQ CS Service Manual

Vital signs monitor
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Summary of Contents for Welch Allyn PROPAQ CS

  • Page 1 Propaq ® Vital Signs Monitor Service Manual...
  • Page 2 Welch Allyn Propaq CS Vital Signs Monitor Copyright 2008 Welch Allyn. All rights are reserved. No one is permitted to reproduce or duplicate, in any form, this manual or any part thereof without permission from Welch Allyn. Welch Allyn assumes no responsibility for any injury to anyone, or for any illegal or improper use of the product, that may result from failure to use this product in accordance with the instructions, cautions, warnings, or statement of intended use published in this manual.

  • Page 3: Table Of Contents

    Contents 1 - Safety summary ......... 1 Warnings.
  • Page 4 Contents Welch Allyn Propaq CS Vital Signs Monitor Propaq CS Monitor software ........59 Required tools.

  • Page 5: Safety Summary

    Safety summary Warnings This Safety Summary should be read by all Propaq CS monitor users. Specific warnings and cautions are placed throughout the documentation where they apply. Caution: Federal (U.S.A.) law restricts this device to sale, distribution, or use by or on the order of a licensed medical practitioner.
  • Page 6 Safety summary Welch Allyn Propaq CS Vital Signs Monitor WARNING During defibrillation, keep the discharge paddles away from ECG and other electrodes, as well as other conductive parts in contact with the patient. Avoid contact with any accessories connected to the monitor’s left side panel. WARNING To ensure patient safety, the conductive parts of the ECG electrodes (including associated connectors) and other patient-applied parts should not contact other conductive parts, including earth ground, at any time.

  • Page 7: Definitions

    Service Manual Safety summary • While under warranty, the monitor should be serviced only by a Welch Allyn service technician. Definitions Note Identifies information that may be important to the reader. Caution Identifies conditions or practices that could result in damage to equipment or other property.
  • Page 8 Safety summary Welch Allyn Propaq CS Vital Signs Monitor Keep away from rain Altitude limit Patient connections are Type B The device has met all essential requirements of European Medical Device Directive 93/42/ EEC for a Class 1 product The CE Mark and Notified Body Registration The Canadian Standards Association has Number signify the device has met all evaluated this device according to CSA 601-1...

  • Page 9: Overview

    Overview Purpose and scope The Propaq CS Service Manual is intended as a reference for monitor maintenance and repair to the field-replaceable unit (FRU) level (“Field Replaceable Units (FRUs)” page 129). This manual provides the technically qualified service person with troubleshooting information, repair procedures, and calibration and performance verification instructions.

  • Page 10: Warranty Service

    Overview Welch Allyn Propaq CS Vital Signs Monitor Warranty service DO NOT ATTEMPT TO REPAIR the monitor yourself during the warranty period. For service and repair, contact Welch Allyn. See below. Technical support services Welch Allyn offers a wide range of technical support services including: •...

  • Page 11: Identifying Propaq Cs Monitor Configurations

    Service Manual Overview Identifying Propaq CS Monitor configurations The following tables identify Propaq CS monitor configurations and how they are indicated. The model-option number and serial number are located on the back of the housing. The monitor indicators are located under the handle on the back. Table 1.
  • Page 12 Overview Welch Allyn Propaq CS Vital Signs Monitor Table 2. Expansion module option configurations Option Printer Mainstream CO Sidestream Top level assembly number number 007-0046-XX Nellcor MP-203 007-0050-XX Nellcor MP-203 007-0047-XX Nellcor MP-203 007-0051-XX Masimo MS3 007-0069-XX Nellcor MP-405 007-0086-XX Nellcor Nell-2, MP-507 007-0116-XX Nellcor MP-203...

  • Page 13: Identifying The Acuity Communication Options

    Service Manual Overview Identifying the Acuity Communication options Wireless Acuity option is identified by the yellow antenna cap on the top corner of the monitor. MONITOR DEFIB SYNCHRO Hardwired Acuity option EKG x 1000 is identified by the Acuity connector jack on the monitor right side panel.
  • Page 14 Overview Welch Allyn Propaq CS Vital Signs Monitor The Propaq CS monitor contains software routines that make the Functional Verification and Calibration procedures quicker and easier. You access these routines through the Service Menus as indicated in each of the procedures. The figure below shows the hierarchy of the Service Menus once you enter the top level Service Menu.

  • Page 15: Service Test Screens

    Service Manual Overview Service test screens There are two Acuity Wireless options available: 2.4 GHz radio card (002-0150-00) 2. 5 GHz radio card (002-0160-00) Caution The 2.4 GHz and 5 GHz radio cards are not interchangeable. Replacement of the radio card in the wrong configuration will cause permanent damage to the radio card and/or monitor hardware.
  • Page 16 Overview Welch Allyn Propaq CS Vital Signs Monitor Network Monitor screen (2.4 GHz radio card) To access this screen, from the Network Status screen press NETORK MONITOR. (Or from the Main Menu, press SETUP > MORE > MORE > SERVICE > YES > MORE > MORE >...

  • Page 17: Functional Verification

    Functional verification Introduction This functional verification procedure helps to confirm the proper operation of the Propaq CS monitor and options. This procedure supports the requirements of routine preventive maintenance. No monitor disassembly is required to perform this procedure. “Calibration” on page 43 provides the full calibration procedures. Calibration may be required if the monitor fails certain functional tests or after a circuit board is replaced.
  • Page 18 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Required equipment You will need the following equipment to verify that all functions of the monitor operate correctly. All test equipment must be calibrated to function within parameters specified by the manufacturer, and must be traceable to a national calibration standard. Some equipment can be manufactured.

  • Page 19: Safety Tests

    Service Manual Functional verification Safety tests The following two safety tests, a risk (leakage) current safety check and a dielectric strength integrity (hi-pot) test, must be performed whenever the monitor has been opened for calibration or repair. Note A hi-pot test is only required if the monitor has been opened. Risk (leakage) current test A risk (leakage) current test must be performed to verify that the patient remains electrically isolated from the power circuits of the monitor.
  • Page 20 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Dielectric strength (Hi-Pot) test Because of the close spacings of the monitor's internal components and the critical positioning of the insulation sheet within the monitor, Welch Allyn recommends that a dielectric strength test be performed following any procedure in which the monitor is opened.

  • Page 21: Functional Verification

    Service Manual Functional verification Functional verification Perform the functional verification with the monitor fully assembled. If the monitor has been stored for longer than one month without the monitor connected to the ac adapter (for recharging), the battery voltage must be checked. The battery must be replaced if it cannot hold a charge.
  • Page 22 Functional verification Welch Allyn Propaq CS Vital Signs Monitor dc power accessory cable 0696-02 RIBBED (+) SMOOTH (-) 10. Turn on the dc power supply. 11. Check that the green LED indicator lights up. Note Initial charge current for a low battery is higher than for a charged battery. As the battery charges, the current will decrease.
  • Page 23 Service Manual Functional verification System tests The following procedures check that the buttons operate properly, that the display works correctly, and that the date is correctly displayed. Turn on the monitor. 2. Verify that no error messages appear and the monitor correctly powers up. 3.
  • Page 24 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Table 5. Keystrokes and monitor responses—Software versions 3.6x and greater Press Result SETUP Changes the menu. ALARMS Changes the display to ALARM STATUS. 4 MIN SUSPND (on menu at bottom of screen) 4 MIN SUSPND changes to RESUME.
  • Page 25 Service Manual Functional verification If incorrect, press NEXT and UP or DOWN to select and change the time and date. Then enter the new setting by pressing the ENTER key. 20. Turn off the monitor. ECG/RESP Channel and Alarm Indicators The following procedures verify the ECG channel and the alarm indicator drivers.
  • Page 26 Functional verification Welch Allyn Propaq CS Vital Signs Monitor • Audible vital signs alarms (software versions 3.6x and greater): OFF (SETUP > MORE > MORE > SERVICE > YES > MORE > MORE > SETTINGS > ALL ALARM > YES. The ALARM light will turn on, indicating that the patient alarms are suspended.
  • Page 27 Service Manual Functional verification 15. Press HOME > SETUP > ALARMS > STAT SET to automatically set heart and respiration rate alarm limits. 16. Check that the ALARM(S) OFF light is off. 17 . Set the patient simulator heart rate to 180 bpm or higher. 18.
  • Page 28 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Note Some amount of mains noise may also be present in the signal. 8. Move the wire and scope probe from the ECG pin of the ECG X1000 connector to the DEFIB SYNC connector pin shown in the figure below or use Defib Sync Output cable, 008-0237-00.
  • Page 29 Service Manual Functional verification Press SETUP > WAVE SELECT and check that the P1 and P2 waveforms are turned 2. Connect the IBP cable from the patient simulator to an IBP input jack on the left side panel of the monitor. 3.
  • Page 30 Functional verification Welch Allyn Propaq CS Vital Signs Monitor nibp test screen ADULT PRINT FAULT 10:42:17 NIBP TEST BATTERY: 8.3 VOLTS CNTS mmHg VALVE 249.4 1600 mmHg LEAK DIAG: BLEED mmHg/s PUMP: secs PUMP AUTO CANCEL ZERO PREVIOUS TEST PUMP MENU Manually reduce the pressure as indicated on the pressure meter to each of the levels shown in the following table, and check the displayed value of PR1 to be within the...
  • Page 31 Service Manual Functional verification Temperature Plug a 37 .0° C YSI 400 series (two conductor) calibrated temperature probe simulator into the T1 jack on the monitor’s left side panel. 2. Check that the T1 temperature is 37° ± 0.1° C. 3.
  • Page 32 Functional verification Welch Allyn Propaq CS Vital Signs Monitor • Masimo-compatible SpO cable. • Compatible adult SpO sensor for finger. • BIO-TEK Index 2 Series SpO Simulator with optical finger for sensor connection (or equivalent). Turn on power to the SpO simulator.
  • Page 33 Service Manual Functional verification “Expansion module option configurations” on page 8. The following table shows how to identify compatible sensors for each Nellcor option: Table 7. Sensor compatibility Sensor Description Connector Compatible with Pins Notches Color MP-203 MP-405 Nell-2, MP-507 Single-ended Varies Differential...
  • Page 34 Functional verification Welch Allyn Propaq CS Vital Signs Monitor 18. Close the paper door and set the monitor upright. 19. Simultaneously press the PRINT TRENDS and START/STOP buttons. 20. Check that a test printout similar to one shown in the figure below is printed. verification preparation The mainstream and sidestream CO functional verification procedures require calculating...
  • Page 35 Service Manual Functional verification b. The reported ATIS is 30.09 inches Hg. (Altimeter: three zero zero niner.) c. Multiply the LUP (632.35) by the ATIS (30.09) times 0.033421. This gives the local barometric pressure of 635.92 mmHg. Example 2 a. The altitude is 1000 meters. The local uncorrected pressure (LUP) is determined from the following table to be 674.11.
  • Page 36 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Table 8. Local uncorrected barometric pressure (LUP) as a function of altitude (feet) (continued) Altitude Pressure Altitude Pressure Altitude Pressure Altitude Pressure (feet) (mmHg) (feet) (mmHg) (feet) (mmHg) (feet) (mmHg) -500 773.83 2500 693.80...
  • Page 37 Service Manual Functional verification Table 9. Local uncorrected barometric pressure (LUP) as a function of altitude (meters) (continued) Altitude Pressure Altitude Pressure Altitude Pressure Altitude Pressure (meters) (mmHg) (meters) (mmHg) (meters) (mmHg) (meters) (mmHg) 751.03 1800 611.22 3500 493.27 5200 394.46 746.58 1850...
  • Page 38 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Mainstream CO verification procedure This procedure verifies the accuracy of the monitor’s mainstream CO (MCO ) measuring system. If verification test results exceed specification limits, calibration (“MSP Board (MCO2) calibration” on page 54) MAY or MAY NOT be required—there are multiple possible sources of errors in testing as listed in the table below.
  • Page 39 Service Manual Functional verification WARNING Eliminate all the possibilities causing errors shown in the following table before performing the calibration procedure (“MSP Board (MCO2) calibration” on page 54). Recalibrating the altimeter as described in that procedure, without adequately eliminating all other possible faults, may result in inaccurate EtCO readings.
  • Page 40 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Sidestream CO verification procedure The following procedures verify the operation of the sidestream CO (SCO ) option. Allow the monitor to warm-up for 3 minutes before performing the SCO tests. 2. If present, disconnect the mainstream sensor from the monitor. 3.
  • Page 41 Service Manual Functional verification 11. Plug the water trap inlet and verify that the monitor generates an OCCLUSION- CHECK WATER TRAP/TUBING equipment alert message. Acknowledge the equipment alert. Wait for SRCH to appear in the SCO numerics window. 12. Plug the exhaust port and verify that the monitor generates an OCCLUSION-CHECK EXHAUST PORT/TUBING equipment alert message.
  • Page 42 Functional verification Welch Allyn Propaq CS Vital Signs Monitor 30. Multiply the calculated partial pressure (in mmHg) from step 29 by 0.95316. Record this calculation for use in step 33. 31. Select the SIDE TEST through the SERVICE > CO2 TEST > SIDE TEST menus. 32.
  • Page 43 Service Manual Functional verification Functional verification for Acuity Wireless option To perform this procedure, you will need access to a properly functioning Acuity FlexNet network supporting wireless operation. Disconnect any patient cables connected to the monitor. Make sure the hardwire Acuity network cable is not plugged into the Acuity network jack on the right side of the monitor.
  • Page 44 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Reset Radio menu (5 GHz radio card) For monitors containing a 5 GHz radio card, a concealed menu is provided that allows resetting the 5 GHz card’s configuration back to its factory default configuration. It may be necessary to return the radio card to its default settings if: •...
  • Page 45 Service Manual Functional verification RESET RADIO CARD RESET RADIO CARD SETTINGS TO DEFAULT 37.0 MONITOR WILL RESTART °C ARE YOU SURE? Once the sequence is entered correctly, the Reset Radio menu will be displayed. Press YES to reset the radio to its factory default settings. Press NO to exit the menu. Note If the Reset Radio menu is accessed immediately after the monitor is powered on, the YES button will be blank and will not function until the 5 GHz radio card...
  • Page 46 Functional verification Welch Allyn Propaq CS Vital Signs Monitor...

  • Page 47: Calibration

    Calibration Introduction This section provides procedures to perform all adjustments required to calibrate the Propaq CS monitor to conform to Welch Allyn specifications. Calibration requires opening the monitor case. This must be performed only by qualified personnel. • Calibration includes adjustment of: •...

  • Page 48: Equipment Needed

    Calibration Welch Allyn Propaq CS Vital Signs Monitor Equipment needed You will need the following equipment to calibrate the Propaq CS monitor. Part numbers are given for equipment available from Welch Allyn. Note All test equipment must be calibrated to function within parameters specified by the manufacturer, and be traceable to a national calibration standard.
  • Page 49 Service Manual Calibration 5. Open the monitor. 6. Disconnect P1 (expansion connector cable) from the Analog Board and open the front chassis approximately 90 degrees. Note To disable the alarms while performing the calibration procedures: press SETUP > ALL ALARMS > YES to remove the bell symbol from the display To inhibit the Apnea alarm, turn off Respiration monitoring: press ECG/RESP >...

  • Page 50: Recharger Supply Adjustments

    Calibration Welch Allyn Propaq CS Vital Signs Monitor Recharger supply adjustments Verify that the monitor power switch is off. 2. Disconnect the battery connector from P12 on the Recharger Board (see below). 3. Disconnect P8 from the Digital Board (see below). Figure 1.
  • Page 51 Service Manual Calibration 8. Verify that the input current from the variable dc power supply is less than 1.8 A and that the green LED on the monitor’s right side panel is on. Figure 2. Recharger PCB measurement and adjustment locations OVR SET VLV2 VLV1...

  • Page 52: Main Power Supply Adjustments

    Calibration Welch Allyn Propaq CS Vital Signs Monitor Main power supply adjustments The following procedures assume you are continuing from the Recharger Board calibration. If not, refer to the setup procedures provided at the beginning of this section. Turn off the monitor. 2.
  • Page 53 Service Manual Calibration Table 12. Main power supply voltage checks Supply voltages Ref. lead Pos. lead Voltage limits (V) Non-isolated TP39 +14.7 to +15.3 –15 TP39 TP11 –14.8 to -15.5 Isolated TP43 or TP1 +4.91 to +5.09 TP43 or TP1 +6.58 to +7.15 –VS TP43 or TP1...

  • Page 54: Calibrating Realtime Ecg Out

    Calibration Welch Allyn Propaq CS Vital Signs Monitor Calibrating realtime ECG out Connect the 5-lead ECG cable to the monitor and the simulator. 2. Set the simulator to 80 bpm, normal sinus rhythm. 3. Set the monitor to Lead II. 4.

  • Page 55: Noninvasive Blood Pressure Calibration

    Service Manual Calibration Noninvasive Blood Pressure calibration Connect the cuff, digital pressure meter, bulb, and the Encore together with the cuff calibration kit. Using T-connectors from the kit, connect the cuff, pressure meter, and bulb. 2. Connect this NIBP test setup to the pressure transducer at PT1 on the Analog board. 3.
  • Page 56 Calibration Welch Allyn Propaq CS Vital Signs Monitor 11. Connect the oscilloscope reference lead to TP43 or TP1 on the Analog Board. 12. Check for ≤15 mV peak-to-peak noise. Note Measure the low frequency noise (bounce) only. Make the peak-to-peak measurement from the center-to-center of the trace to disregard the “fuzzy”...

  • Page 57: Invasive Blood Pressure

    Service Manual Calibration Invasive Blood Pressure Skip this part of the calibration procedure if your monitor does not support IBP measurements. Caution Many blood pressure simulators are not intended for use as calibration standards. Use only recommended simulators for calibrating the monitor. Connect the IBP simulator to P1 on the monitor left side panel.

  • Page 58: Msp Board (Mco2) Calibration

    Calibration Welch Allyn Propaq CS Vital Signs Monitor MSP Board (MCO ) calibration The monitor MSP Board has two calibration adjustments. One adjustment (RP2) is a null adjust for electromagnetic interference emissions—this adjustment has no effect on performance/accuracy. The other adjustment (RP1) is a barometric pressure/ altimeter setting.

  • Page 59: Troubleshooting

    Troubleshooting Introduction This section provides information that can be helpful in troubleshooting the monitor. Screen messages Messages may appear on the display to inform the operator of some condition requiring operator or service attention. Messages that indicate that the Propaq CS monitor may need servicing are listed below.
  • Page 60 Troubleshooting Welch Allyn Propaq CS Vital Signs Monitor LACK OF WAVE, CHECK ADAPTER, SENSOR - (MCO ). The airway adapter (cuvette) may be contaminated or the light source in the sensor may be faulty. Clean or replace the cuvette as required or replace the CO sensor.

  • Page 61: Battery Capacity Check

    Service Manual Troubleshooting x = 7 indicates a problem found by the Side Stream Processor (SSP) on the sidestream main board. yyy-zzzz indicate specific types of problems. Contact Welch Allyn Technical Support for more details. Battery capacity check Several variables affect monitor operating time on battery: •...
  • Page 62 Troubleshooting Welch Allyn Propaq CS Vital Signs Monitor...

  • Page 63: Repair Procedures

    Repair procedures Introduction This section provides instructions for removing and replacing serviceable modules in the: • Propaq CS monitor • Expansion Module (which may include any or all of the following: printer, SpO Mainstream CO , Sidestream CO • -only module This section also describes how to replace the input fuse and battery pack.

  • Page 64: Required Tools

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Note The DCP PROMs and the Digital Board are not field replaceable due to external programming requirements. Do not remove the DCP PROMs. For Digital Board service and/or a DCP software update, contact your Welch Allyn Service representative.

  • Page 65: Propaq Cs Monitor Options

    Service Manual Repair procedures Propaq CS Monitor options Your monitor may contain an option module that attaches to the monitor. You must remove the option module before you can disassemble the monitor. For instructions on how to remove the Expansion Module, refer to “Replacing the battery pack”...

  • Page 66: Field-Replaceable Units In The Monitor

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Field-Replaceable Units in the monitor Front chassis The Front Chassis of the monitor contains the following components: • Insulator • Analog Board with metal shield and insulator • Digital Board with shields •...
  • Page 67 Service Manual Repair procedures Interface chassis The Interface Chassis is available either with or without the Nurse Call option. Nurse Call Option connector Standard Interface Chassis Interface Chassis with Nurse Call Option Rear chassis The Rear Chassis contains the following components: •...

  • Page 68: Replacing The Power Input Fuse

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Replacing the power input fuse The Fuse F1 protects the Recharger Board circuitry against excessive current at the dc input connector. You do not need to disassemble the Propaq CS monitor to replace this fuse.
  • Page 69 Service Manual Repair procedures Keep the battery away from children. Do not disassemble it and do not incinerate or burn The battery maintains programmed defaults and time of day. Without the battery, the values for these items return to the factory settings. If the power up error message TIME/ DATE SETTINGS LOST is displayed, reprogram the time and day and monitoring default parameters according to the procedures described in the Propaq CS Directions For Use.
  • Page 70 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Removing the single battery pack The following steps describe how to remove the battery pack from the monitor: Using a flat blade screwdriver, unscrew the four screws securing the battery pack cover as shown below.
  • Page 71 Service Manual Repair procedures 2. If necessary, use the flat blade screwdriver to gently loosen the Expansion Module from the monitor (see below). 3. Slide the monitor forward until you can disconnect the battery pack cable from the monitor's power cable (see below). The battery pack should remain in the Expansion Module Chassis.

  • Page 72: Opening The Monitor

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Remove the dual battery pack from the Expansion Module. 8. Store the battery in a safe place while disassembling the monitor and Expansion Module. When reconnecting the Expansion Module, confirm that the continuous O-ring gasket is correctly in place.
  • Page 73 Service Manual Repair procedures Caution Before opening the casing more than one inch in the next step, disconnect the tube from the pressure transducer at the joint. Failure to disconnect the tubing may cause damage to the transducer or tubing. 3.
  • Page 74 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor P1 removal 6. Spread the casing open to an angle of about 45-60 degrees. Detach the following cables from the Front Chassis (shown below): • Cable to P5 on the Analog Board, from left side panel ECG connector on the Rear Chassis.
  • Page 75 Service Manual Repair procedures 8. Detach the ribbon cable from the Rear Chassis (see below): Ribbon cable to P10 on the Recharger Board, from the Digital Board. cable p10, p11 The two halves are sealed by rubber gaskets that are recessed around the Note perimeter of the Rear Chassis.

  • Page 76: Closing The Monitor

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Closing the monitor Before closing the monitor casing, confirm the following: • Cable to P6 on the Analog Board goes behind and below the cable to P5, and over the cable to P7 . •...

  • Page 77: Replacing The Analog Board

    Service Manual Repair procedures Replacing the Analog Board This section provides instructions on removing the Analog Board. The Analog Board is secured in the Front Chassis by five screws: three on the right side of the Board (side containing the transformer), and two passing through the metal shield on the left side of the Board.
  • Page 78 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Caution The Analog and Digital Boards are connected together on the right side by connectors P4 and J4. It may be necessary to use two flat blade screwdrivers to gently pry the boards apart. Place the screwdriver blades as close to the edge of the board as possible to avoid contacting components on the board.

  • Page 79: Replacing The Display

    Service Manual Repair procedures Replacing the Display Note Do not remove the PROMs from the Digital Board. The Digital Board contains monitor-specific on-board configuration programming that requires special service procedures. For assistance in servicing the Digital Board and software, contact Welch Allyn or your local distributor.
  • Page 80 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Remove the nine screws connecting the Digital Board to the Display (see below). IMPORTANT: Short screw...

  • Page 81: Reinstalling The Display

    Service Manual Repair procedures Reinstalling the Display When installing the Display: • Make sure the cable between the Digital Board and Recharger Board is installed on the Digital Board first before placing the Digital Board on the Front Chassis. • Handle all Display cables with care to avoid damage.

  • Page 82: Replacing Recharger Board Fuse (F2)

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Replacing Recharger Board fuse (F2) The Recharger Board fuse (F2) protects the monitor power supply input at the battery line to the monitor. If the monitor does not turn on but the BATTERY CHARGING indicator lights when the ac power adapter is connected, check fuse F2 (3 Amp).

  • Page 83: Replacing Air Tubing

    Service Manual Repair procedures Replacing air tubing Replace the NIBP tubing as a single assembly to ensure the tubing lengths are accurate. Refer to “Field Replaceable Units (FRUs)” on page 129 for the tubing assembly part number. Note If you don’t need to replace the length of tubing between the cuff hose connector in the left side panel and the rest of the tubing assembly, don’t remove the left side panel to disconnect this tube.

  • Page 84: Replacing Cables

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Replacing cables If you suspect a cable is faulty, check its continuity on all pins. If you need to replace a cable, refer to “Field Replaceable Units (FRUs)” on page 129 for part numbers. See below for cable locations.
  • Page 85 Service Manual Repair procedures Beveled Fingers Corner PROM Beveled Outside Corner Slot Slot 1097-02...
  • Page 86 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Cuff fittings Air system integrity in the NIBP system is essential to ensure accurate measurements. Routine wear of the O-ring gasket located in the threaded fitting of the cuff hose can result in air leaks.

  • Page 87: Replacing The Recharger Board

    Service Manual Repair procedures Replacing the Recharger Board The Recharger Board is secured to the Rear Chassis by four screws. When removing the Recharger Board, note the location of cables, plumbing, and screws and screw lengths. Remove the battery pack (“Removing the single battery pack”...
  • Page 88 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Screws Screws 0696 40 6. Lift out the Recharger Board. Caution As you set the Recharger Board in place during installation, keep the Board away from the power switch solder terminals to avoid binding against them.

  • Page 89: Replacing The Pump

    Service Manual Repair procedures Replacing the pump New wires and a connector are provided with the replacement pump kit. Remove the battery pack (“Removing the single battery pack” on page 66). 2. Open the monitor (“Opening the monitor” on page 68). 3.

  • Page 90: Replacing The Side Panels

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Replacing the side panels The Propaq CS monitor side panels are complete assemblies. The side panels are sealed to the Rear Chassis with an adhesive gasket. A new gasket is provided with the new side panel kit. Removing the right side panel Remove the battery pack (“Removing the single battery pack”...
  • Page 91 Service Manual Repair procedures Removing the left side panel Remove the battery pack (“Removing the single battery pack” on page 66). 2. Open the monitor (“Opening the monitor” on page 68). 3. Remove the Recharger Board (“Replacing the Recharger Board” on page 83).
  • Page 92 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor side panel routing ROUTE CABLE BUNDLE ALONG BOTTOM OF REAR CHASSIS Uncovering the protective paper in the next step exposes the adhesive on the Note gasket. Do not touch or otherwise contaminate the adhesive, or the adhesive may not properly seal the side panel.
  • Page 93 Service Manual Repair procedures 0696-45...

  • Page 94: Expansion Module

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Expansion Module The Expansion Module housing contains one or all of the following (see below): • printer mechanism with Printer Main Board • MSP Board (units with CO option) • connector side panel •...
  • Page 95 Service Manual Repair procedures Opening Expansion Module rear panel Separate the monitor and Expansion Module (“Removing the dual battery in expansion module” on page 66). For all Sidestream CO options (226, 227 , 228, or 229) remove the front panel Note (“Replacing Expansion Module front panel”...
  • Page 96 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Closing Expansion Module Make sure all cables are in place and the gaskets removed earlier are available. 2. Set the rubber gaskets in their proper places as shown in the figure below. 3.

  • Page 97: Replacing Expansion Module Front Panel

    Service Manual Repair procedures Replacing Expansion Module front panel The front panel contains the printer buttons. Like the rear panel, the front is sealed to the Chassis with a rubber O-ring gasket. This gasket can be re-used when replacing the front panel.

  • Page 98: Replacing Expansion Module Button Board And Buttons

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Replacing Expansion Module button board and buttons The Expansion Module contains a button board that has electrical contact areas to detect when an Expansion Module button is pressed. The front panel buttons are similar to the monitor buttons.

  • Page 99: Replacing The Printer

    Service Manual Repair procedures Replacing the printer This section provides instructions on removing and installing the printer mechanism and Printer Main Board. These two components are provided as a replacement unit called the Printer Assembly. Caution Do not attempt to separate the printer mechanism from the Printer Main Board.
  • Page 100 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Installing the printer Lay the Chassis on its back 2. Completely open the paper door. Caution As you install the Printer Assembly, rotate the printer door latch mechansim out of the way so it clears the Chassis. The Printer Assembly fits snugly, but should not require much force to slide it in place.

  • Page 101: Opening The Spo2 Module

    Service Manual Repair procedures Opening the SpO Module Separate the SpO module from the monitor according to the procedure “Removing the dual battery in expansion module” on page 66. 2. Two tabs secure the SpO module rear panel to the SpO module chassis.

  • Page 102: Replacing The Spo2 Boards

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Replacing the SpO Boards The following instructions describe how to replace the two SpO Boards in the SpO module and in the Expansion Module without a CO option. Instructions for replacing Boards in an Expansion Module with a CO option are described in “Replacing the...

  • Page 103: Replacing The Msp/Spo2 Boards

    Service Manual Repair procedures Replacing the MSP/SpO Boards The following instructions describe how to replace the MSP/SpO Boards in the Expansion Module with a CO option. Instructions for replacing SpO Boards in SpO module and Expansion Module without a CO option installed are described in “Replacing the SpO2 Boards”...

  • Page 104: Replacing The Sidestream Co2 Assemblies

    Repair procedures Welch Allyn Propaq CS Vital Signs Monitor • set the two boards and side panels in place, making sure that the boards are seated on the support tabs • torque screws to 4.75 to 5.25 in-lb (0.54 to 0.59 N-m) •...
  • Page 105 Service Manual Repair procedures Removing the SSP/Stick Board assembly Caution When servicing the SSP and Stick Board assemblies, be sure to note the tubing routing prior to disconnection. Always reassemble tubing exactly as removed. Stick Board Retainer Retainer Pump Pressure Transducer Screws No connection 1097-18...
  • Page 106 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Removing the Stick Board from the SSP Board Disconnect the tubing from the pump and pressure transducer PT2 on the front- facing side of the SSP Board and the pneumatic reservoir on the rear-facing side. 2.

  • Page 107: Replacing Expansion Module Side Panels

    Service Manual Repair procedures Replacing Expansion Module side panels The side panels easily slide out after the Chassis and rear panel are separated. If the patient connector side panel is being replaced, this side panel and the two boards must be removed together before disconnecting the side panel from the board.
  • Page 108 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor...

  • Page 109: Technical Overview

    Technical overview Introduction This section describes the electronics of the Propaq CS monitor and three of its options: Printer, Pulse Oximetry (SpO ), and Capnography (CO This section is intended as an aid to servicing at the field replaceable unit level and contains only system-level and functional-level circuit descriptions.
  • Page 110 Technical overview Welch Allyn Propaq CS Vital Signs Monitor Monitor options Analog Board Monitor Digital Board Display Standard Recharger Board Interface Chassis Display Left Side Gasket Panel Right Side Panel Rear Chassis Front Chassis with Touchscreen 0696-12 Rear Panel SpO 2 Connector SCP Board SpO 2...
  • Page 111 Service Manual Technical overview Filler Panel Rear Panel Main Housing Filler Panel Printer Expansion Module Option 221 printer Printer Door Front Panel, 1097-04 no SCO 2 SpO2 Connector Panel Rear Panel SpO 2 Board Speaker Panel Main Housing SCP Board Printer Expansion Module Option 223...
  • Page 112 Technical overview Welch Allyn Propaq CS Vital Signs Monitor SpO 2 Connector Panel Rear Panel CO 2 Connector Panel SpO 2 Board Speaker Panel Main Housing 08 MSP Board Expansion Module Printer Option 225 printer SpO 2 Printer Door MCO 2 1097-07 Front Panel, no SCO 2...
  • Page 113 Service Manual Technical overview SpO 2 Connector Panel Rear Panel CO 2 Connector Panel SpO 2 Board Speaker Panel Main Housing 08 MSP Board Expansion Module SSP Board Option 228 SpO 2 Extender Board MCO 2 SCO 2 Front Panel, Stick Board 1097-10 with SCO 2...
  • Page 114 Technical overview Welch Allyn Propaq CS Vital Signs Monitor monitor systemsystem block SYSTEM BLOCK MONITOR CHASSIS DIAGRAM ANALOG BOARD (PATIENT DATA ACQUISITION, ANALOG-TO-DIGITAL CONVERSION, REAL-TIME ANALOG ISOLATED CPU, ECG OUT means optional PATIENT ISO/NON-ISO POWER SUPPLIES, configuration DATA REAL-TIME ECG OUT) LOCATED IN FRONT CHASSIS CUFF PRESSURE POWER/...
  • Page 115 Service Manual Technical overview Power electronics description The power system circuits are located on the Analog, Digital, and Recharger Boards. The power system includes the ac mains power adapter. Refer to the figure below. The power system • converts ac mains current to dc current (external power adapter) •...
  • Page 116 Technical overview Welch Allyn Propaq CS Vital Signs Monitor power electronics system VCC_OVERVOLTAGE BACKLIGHT_ON/OFF +3.3V_OVERVOLTAGE DISPLAY, +VSW SHUTDOWN/ POWER +3.3V +3.3V SUPPLY DISPLAY PWR_SWT_COM CCFL SYSTEM LOGIC CONTROLLER SUPPLY DIAGRAM +VSW PCMCIA MONITOR RF_SUPPLY_EN SUPPLY CONTROLLER POWER CONTROL DIGITAL BOARD RECHARGER BOARD +VSW...
  • Page 117 Service Manual Technical overview Monitoring electronics system description The monitoring electronics reside on the Analog and Digital Boards located in the front chassis assembly. Refer to the figures page 113, page 114 page 115. These circuits: • acquire the physiological signals from coupling devices (electrodes, transducers, and probes) •...
  • Page 118 Technical overview Welch Allyn Propaq CS Vital Signs Monitor Digital board interconnect diagram (2.4 GHz radio card)
  • Page 119 Service Manual Technical overview Digital board interconnect diagram (5 GHz radio card)

  • Page 120: Nibp Pneumatics Description

    Technical overview Welch Allyn Propaq CS Vital Signs Monitor NIBP pneumatics description The NIBP (cuff) system: • inflates the cuff to a target cuff pressure • converts the cuff air pressure to an electrical signal using a pressure transducer • deflates the cuff in a controlled manner while the monitoring electronics determines blood pressure •...
  • Page 121 Service Manual Technical overview NIBP PNEUMATICS AT REST BETWEEN MEASUREMENTS TO DAP A-D CONVERTER PRIMARY TRANSDUCER SERVO (LINEAR) CUFF VALVE CLOSED BLEED DUMP VALVE PUMP VALVE OPEN OPEN SECONDARY TRANSDUCER TO DCP A-D CONVERTER ATMOSPHERIC PRESSURE 0696-62 INCREASING PRESSURE (INFLATION) DECREASING PRESSURE (DEFLATION) PRESSURIZED (TARGET REACHED) NIBP PNEUMATICS DURING PUMP UP TO TARGET PRESSURE...
  • Page 122 Technical overview Welch Allyn Propaq CS Vital Signs Monitor NIBP PNEUMATICS AT MAXIMUM TARGET PRESSURE TO DAP A-D CONVERTER PRIMARY TRANSDUCER CUFF SERVO (LINEAR) VALVE CLOSED BLEED DUMP VALVE PUMP VALVE OPEN CLOSED SECONDARY TRANSDUCER TO DCP A-D CONVERTER ATMOSPHERIC PRESSURE INCREASING PRESSURE (INFLATION) 0696-64 DECREASING PRESSURE (DEFLATION)
  • Page 123 Service Manual Technical overview NIBP PNEUMATICS AFTER MEASUREMENT COMPLETE TO DAP A-D CONVERTER PRIMARY TRANSDUCER CUFF SERVO (LINEAR) VALVE CLOSED* BLEED DUMP VALVE VALVE PUMP OPEN OPEN SECONDARY TRANSDUCER TO DCP A-D CONVERTER ATMOSPHERIC PRESSURE INCREASING PRESSURE (INFLATION) * VALVE IS INITIALLY CLOSED, BUT OPENS AFTER INITIAL DUMPING DECREASING PRESSURE (DEFLATION) BEGINS BY DUMP VALVE.

  • Page 124: Cabling Diagrams

    Technical overview Welch Allyn Propaq CS Vital Signs Monitor Cabling diagrams system cabling diagram +BAT IN -BAT IN -AUXBAT OUT +AUXBAT OUT THERM1 THERM2...

  • Page 125: Expansion Module And Printer Description

    Service Manual Technical overview Expansion Module and printer description The printer shares battery power with the monitor, but contains its own power supply. The printer processor communicates with the monitor's processor through the expansion connector and cable. The Expansion Module is designed to house the monitor Printer and other circuit boards for additional parameters.
  • Page 126 Technical overview Welch Allyn Propaq CS Vital Signs Monitor PRINTER FUNCTIONAL BLOCK DIAGRAM P502 P150 FROM MOTOR PRINTER PWR (0..9) PRINTER BATTERY POWER DRIVER P501 PAPER OUT DET. P402 HEAD UP SYSTEM DET. PRINTER POWER P400 EXPANSION KEY BOARD P140 FROM/TO PROPAQ PRINT...

  • Page 127: Pulse Oximetry Option (Spo2) Description

    Service Manual Technical overview Pulse oximetry option (SpO ) description The monitor pulse oximetry option (SpO ) hardware includes two circuit boards, a side- panel connector, and related hardware. The pulse oximetry option is installed in the pulse oximetry option module attached to the rear of the monitor (also known as the Baqpaq) or the expansion module when the printer or the CO option are also present.
  • Page 128 Technical overview Welch Allyn Propaq CS Vital Signs Monitor • internal preamplifier and switch • ac-coupled amplifier • inverting amplifier with variable gain stage • synchronous detector • splitter • 5-pole low pass filters • 16-bit ADC • internal calibration amplifier •...
  • Page 129 Service Manual Technical overview spo2 block PULSE OXIMETRY BLOCK DIAGRAM AC COUPLED AMP INTERNAL INVERTING AMP SWITCH PREAMP (VAR. GAIN STAGE) PHOTODIODE SIGNAL FROM SENSOR COMPARE 1 COMPARE 2 PEAK DETECTOR PEAK DETECTOR IR SIGNAL SPLITTERS FILTERS DATA/CONTROLS TO/FROM SYNCHRONOUS RED SIGNAL DETECTOR SIGNAL...

  • Page 130: Capnography (Co2) Description

    Technical overview Welch Allyn Propaq CS Vital Signs Monitor Capnography (CO ) description Two capnography (CO ) monitoring options are available—the Mainstream-sampling CO option (MCO ) and the Sidestream-sampling CO option (SCO Both Mainstream CO and Sidestream CO options are available in one product. However, only one sampling method may be monitored at any time—simultaneous monitoring of and SCO is not supported.
  • Page 131 Service Manual Technical overview Mainstream Board The MSP Board is divided into isolated and non-isolated circuitry. Non-Isolated Circuitry. The Non-Isolated circuitry on the MSP Board interfaces with the monitor, the printer, the speaker, P6 and P7 expansion connectors, and with the Mainstream Processor which resides on the isolated section of the MSP Board.
  • Page 132 Technical overview Welch Allyn Propaq CS Vital Signs Monitor IPC expansion The Inter-Processor Communications (IPC) bus, originating in the monitor, is passed to the MSP Board from the expansion connector. The two-wire bus is expanded to the printer and to the Mainstream Processor via opto-couplers. Power distribution system Power for CO and SpO...

  • Page 133: Field Replaceable Units (Frus)

    Field Replaceable Units (FRUs) To order a field-replaceable unit, contact Welch Allyn Technical Support as described in page Replacement part description Part number Monitor Circuit Board assemblies ANALOG PCB, 24X (MODELS with S/N GA0) (Requires software version 3.5X and later.) 020-0577-00 ANALOG PCB, 24X (MODELS with S/N GA1) (Requires software version 3.60.00 and later.) 020-0577-01...
  • Page 134 Field Replaceable Units (FRUs) Welch Allyn Propaq CS Vital Signs Monitor Replacement part description Part number NIBP HOSE FITTING, PLASTIC, PAIR 020-0065-00 NIBP CONNECTOR, HOSE END, NICKEL PLATED 600-0021-00 VALVE, BLEED/DUMP (VLV1, VLV2) 680-0050-00 VALVE, LINEAR SERVO (VLV3) 680-0049-01 Miscellaneous components for monitors FUSE, 2AG - 3A, SLO BLO, 250 V, EXTERNAL, 1 EACH 503-0058-00 FUSES, 3A PICO FUSE, 125 V, QTY.
  • Page 135 Service Manual Field Replaceable Units (FRUs) Replacement part description Part number SCP BOARD, NELLCOR MP-203 ONLY, U11 64K PROM 020-0476-00 SCP BOARD, NELLCOR / MASIMO, U303 128K PROM 031-0133-03 FRONT CHASSIS, SPO2 ONLY 020-0122-01 REAR CHASSIS, SPO2 ONLY 020-0123-01 MOUNTING SCREWS WITH WASHERS 020-0126-00 SPEAKER PANEL ASSEMBLY 020-0125-01...
  • Page 136 Field Replaceable Units (FRUs) Welch Allyn Propaq CS Vital Signs Monitor Replacement part description Part number LABEL, RIGHT SIDE PANEL, ACUITY (NO LONGER AVAILIBLE) 640-0326-00 LABEL, RIGHT SIDE PANEL, NETWORKS/ACUITY/MODEM 640-0422-00 LABEL, LEFT SIDE PANEL, 2X2, AAMI, UNIVERSAL 640-0321-01 LABEL, LEFT SIDE PANEL, 2X2, HP, UNIVERSAL 640-0356-01 LABEL, LEFT SIDE PANEL, 2X2/RESP., AAMI, UNIVERSAL 640-0329-01...
  • Page 137 Service Manual Field Replaceable Units (FRUs) Replacement part description Part number LABEL, PRINTER KEY PANEL 640-0465-00 Special service tools NIBP CALIBRATION SETUP TUBING ADAPTER KIT 008-0012-01...
  • Page 138 Field Replaceable Units (FRUs) Welch Allyn Propaq CS Vital Signs Monitor...

  • Page 139: A - Manufacturable Test Equipment

    Manufacturable test equipment The following device(s) can be manufactured for use in the functional verification and calibration procedures in this manual. Parts are readily available from electronic component suppliers. 4.65 Ω 4.9 Ω RESISTIVE TEST LOADS (USED TO ADJUST RECHARGER POWER SUPPLIES) USE RESISTOR NETWORKS TO RIGHT AND CREATE TWO (2) SEPARATE TEST LOADS:...
  • Page 140 Manufacturable test equipment Welch Allyn Propaq CS Vital Signs Monitor...

  • Page 141: B - Fluke Patient Simulator Modification

    Fluke patient simulator modification The factory configuration of the Fluke (Dynatech/Nevada) model 214A, 215A, and 217A Patient Simulators is incompatible with the Propaq CS monitors with IBP channels when both the ECG and invasive pressure simulator channels are simultaneously connected to the monitor.
  • Page 142 Fluke patient simulator modification Welch Allyn Propaq CS Vital Signs Monitor 810-0696-57 Incompatibilities with other simulators may also cause erroneous readings and/or missing ECG. Check Propaq CS monitor readings with the simulator against a known source before using the simulator for calibration. Function Color Pin No.

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