Propaq CS Vital Signs Monitor ® Service Manual
ii 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.
iii Contents 1 - Safety summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 - Overview . . . . . . .
iv Contents Welch Allyn Propaq CS Vital Signs Monitor Propaq CS Monitor software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Required tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Propaq CS Monitor options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Field-Replaceable Units in the monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1 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. WARNING Place the Propaq monitor and accessories in locations where they cannot harm the patient if they fall from their shelf or mount.
2 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.
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. WARNING Identifies conditions or practices that could result in personal injury. Symbols The following symbols may appear on the Propaq CS monitor or accessories.
4 Safety summary Welch Allyn Propaq CS Vital Signs Monitor Keep away from rain Altitude limit n Patient connections are Type B The CE Mark and Notified Body Registration Number signify the device has met all essential requirements of European Medical Device Directive 93/42/EEC Restrictions for use of wireless device in Europe.
5 2 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)” on page 129). This manual provides the technically qualified service person with troubleshooting information, repair procedures, and calibration and performance verification instructions. A technical overview of the monitor subsystems is provided as an introduction to the device’s circuitry and pneumatics.
6 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.
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. Propaq Monitor configurations Product (housing) Propaq CS Monitor SpO2-Only Module Expansion Module a.
8 Overview Welch Allyn Propaq CS Vital Signs Monitor Table 2.
Service Manual Overview 9 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 ! 3A 2AG EKG x 1000 ! ! Hardwired Acuity option is identified by the Acuity connector jack on the monitor right side panel.
10 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. The procedures in this manual indicate which buttons to push by separating each button menu name with the (>) character.
Service Manual Overview 11 Service test screens There are two Acuity Wireless options available: 1. 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. The following service screens illustrate the 2.4 GHz radio card and the 5 GHz radio card diagnostic information. Network Status screen (2.
12 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 > RADIO STATUS > NETWORK MONITOR.) NETWORK MONITOR BATTERY: 9.
13 3 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.
14 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. See “Manufacturable test equipment” on page 135 for information on manufacturable test equipment.
Service Manual Functional verification 15 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.
16 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. WARNING The Hi-Pot test is extremely hazardous. Only qualified service personnel should perform this test.
Service Manual Functional verification 17 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. Refer to “Battery capacity check” on page 57. Note See Update to Directions for Use, software version 3.
18 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. The current draw may slowly drop the longer the dc supply is connected to the monitor. 12.
Service Manual Functional verification 19 System tests The following procedures check that the buttons operate properly, that the display works correctly, and that the date is correctly displayed. 1. Turn on the monitor. 2. Verify that no error messages appear and the monitor correctly powers up. 3. Press SETUP > MORE > MORE > SERVICE > YES > MORE > MORE > SCREEN CAL and press CALIBRATE to perform the touch screen calibration.
20 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. Silence/Reset button (software version 3.6sx and RESUME changes to 4 MIN SUSPND. greater) or Alarm Suspend/Resume (software version 3.5x and earlier). LIMITS Changes display to ALARM Limits.
Service Manual Functional verification 21 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. The setup procedure below is used for both the visual and the electrical checks that follow. Setup 1. Turn on the monitor and verify that it powers up correctly. 2.
22 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. 6. Connect the ECG channel to the patient simulator using all five ECG leads. Part 1— Visual check 1. Press HOME to return to the Main Menu. 2. Press ECG/RESP to display the RESP waveform. 3.
Service Manual Functional verification 23 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. Check that an alarm violation occurs, causing the tone to sound and the ALARM light to flash. 19. Software versions 3.6x and greater: Press 4 MIN SUSPND and verify that the tone turns off and the ALARM light stops flashing.
24 Functional verification Note Welch Allyn Propaq CS Vital Signs Monitor 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. Leave the scope’s ground clip where it is. defib sync DEFIB SYNC SYNC OUT (scope probe) 0696-70 9. Change the vertical sensitivity of the scope to 1 Volt/division. 10.
Service Manual Functional verification 1. 25 Press SETUP > WAVE SELECT and check that the P1 and P2 waveforms are turned on. 2. Connect the IBP cable from the patient simulator to an IBP input jack on the left side panel of the monitor. 3. Set the simulator output pressure to 0 mm Hg. Note If an alarm tone sounds, press SILENCE/RESET (software version 3.6x and greater) or ALARM SUSPEND/RESUME (all other software versions). 4. Zero P1 by pressing ZERO P1. 5. Check that ZEROED is displayed. 6.
26 Functional verification Welch Allyn Propaq CS Vital Signs Monitor nibp test screen ADULT 10:42:17 BATTERY: 8.3 VOLTS NIBP TEST CNTS mmHg DAC PR1 578 249.4 130 PR2 338 259 DSC 1600 10 LEAK mmHg BLEED DIAG: VALVE 0 0 mmHg/s PUMP: PUMP TEST 7.
Service Manual Functional verification 27 Temperature 1. 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. Repeat Steps 1 and 2 for T2. 4. Plug a 37° C YSI 700 series (three conductor) temperature probe simulator into the T1 jack. 5. Check for 37° ± 0.1° C. 6. Repeat Steps 4 and 5 for T2. 7. Remove all connectors and turn the monitor off. 1.
28 Functional verification Welch Allyn Propaq CS Vital Signs Monitor • Masimo-compatible SpO2 cable. • Compatible adult SpO2 sensor for finger. • BIO-TEK Index 2 Series SpO2 Simulator with optical finger for sensor connection (or equivalent). 1. Turn on power to the SpO2 simulator. 2. Connect the SpO2 cable to the monitor and the SpO2 sensor. 3. Apply the SpO2 sensor to the SpO2 simulator optical finger. 4. Set the simulator manufacturer type (“MAKE”) to Masimo. 5.
Service Manual Functional verification 29 “Expansion module option configurations” on page 8. The following table shows how to identify compatible sensors for each Nellcor option: Table 7.
30 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. CO2 verification preparation The mainstream and sidestream CO2 functional verification procedures require calculating the local barometric pressure and partial pressure of the test gas (in mmHg) to compare to monitor displayed values.
Service Manual Functional verification 31 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. b. The reported ATIS is 764.29 mmHg. c. Multiply the LUP (674.11) by the ATIS (764.29) times 0.00131579.
32 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Table 8. Local uncorrected barometric pressure (LUP) as a function of altitude (feet) (continued) Altitude (feet) Pressure (mmHg) Altitude (feet) Pressure (mmHg) Altitude (feet) Pressure (mmHg) Altitude (feet) Pressure (mmHg) -500 773.83 2500 693.80 7000 586.44 15000 428.89 -400 771.05 2600 691.26 7200 582.00 15333 423.17 -300 768.28 2700 688.72 7400 577.58 15667 417.49 -200 765.51 2800 686.
Service Manual Functional verification Table 9. Local uncorrected barometric pressure (LUP) as a function of altitude (meters) (continued) Altitude (meters) Pressure (mmHg) Altitude (meters) Pressure (mmHg) Altitude (meters) Pressure (mmHg) Altitude (meters) Pressure (mmHg) 100 751.03 1800 611.22 3500 493.27 5200 394.46 150 746.58 1850 607.45 3550 490.10 5250 391.82 200 742.15 1900 603.70 3600 486.95 5300 389.19 250 737.74 1950 599.97 3650 483.82 5350 386.
34 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Mainstream CO2 verification procedure This procedure verifies the accuracy of the monitor’s mainstream CO2 (MCO2) 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. 1.
Service Manual Functional verification 35 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 EtCO2 readings. Table 10.
36 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Sidestream CO2 verification procedure The following procedures verify the operation of the sidestream CO2 (SCO2) option. 1. Allow the monitor to warm-up for 3 minutes before performing the SCO2 tests. 2. If present, disconnect the mainstream sensor from the monitor. 3. If installed, remove the water tap from the receiver on the front left panel of the expansion module. 4.
Service Manual Functional verification 37 11. Plug the water trap inlet and verify that the monitor generates an OCCLUSIONCHECK WATER TRAP/TUBING equipment alert message. Acknowledge the equipment alert. Wait for SRCH to appear in the SCO2 numerics window. 12. Plug the exhaust port and verify that the monitor generates an OCCLUSION-CHECK EXHAUST PORT/TUBING equipment alert message. Acknowledge the equipment alert.
38 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. Observe the instantaneous CO2 value on the service screen for a constant value indicating that the CO2 concentration in the ziplock bag has stabilized. 33.
Service Manual Functional verification 39 Functional verification for Acuity Wireless option To perform this procedure, you will need access to a properly functioning Acuity FlexNet network supporting wireless operation. 1. 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. 2. Turn the monitor off, then turn it on.
40 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.
Service Manual Functional verification RESET RADIO CARD RESET RADIO CARD SETTINGS TO DEFAULT T1 MONITOR WILL RESTART °C ARE YOU SURE? YES 37.0 NO 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 has been initialized.
42 Functional verification Welch Allyn Propaq CS Vital Signs Monitor
43 4 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: • Battery charger • Main power supply • Real-time ECG output • IBP gain • NIBP gain • Mainstream CO2 barometer Additional circuit testing is also included in this section.
44 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. Table 11.
Service Manual Calibration 45 5. Open the monitor. 6. Disconnect P1 (expansion connector cable) from the Analog Board and open the front chassis approximately 90 degrees.
46 Calibration Welch Allyn Propaq CS Vital Signs Monitor Recharger supply adjustments 1. 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. Disassembled front chassis and disconnection locations P12 P9 P8 P3 P2 5 P1 11 P P1 2 P1 10 P8 P P6 P5 P7 4. Connect the 4.
Service Manual Calibration 47 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 RP3 RP5 TP4 P12 TP2 GND RP1 OVR SET TP4 TP2 TP3 Q1 PT2 VLV2 RP1 VLV1 RP5 RP3 RP7 NIBP PUMP T3 VLV3 PIN 1 P12 P1 CATHODE 4 +BAT TP1 D33 P10 P11 9. Connect the DMM positive lead to P12 pin 1 or 5. 10.
48 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. 1. Turn off the monitor. 2. Remove the metal shield from the Analog Board. (Note the two different screw sizes; refer to “Repair procedures” on page 59 for instructions, if necessary. Figure 3.
Service Manual Calibration Table 12. Main power supply voltage checks Supply voltages Ref. lead Pos. lead Voltage limits (V) +15 TP39 TP3 +14.7 to +15.3 –15 TP39 TP11 –14.8 to -15.5 +VR TP43 or TP1 TP9 +4.91 to +5.09 +VS TP43 or TP1 TP5 +6.58 to +7.15 –VS TP43 or TP1 TP21 -6.65 to -7.15 +VB TP43 or TP1 TP13 +5.40 to +6.10 +5.6 TP43 or TP1 TP33 +5.55 to +5.70 TP43 or TP1 P6, Pin 10 +2.47 to +2.53 TP43 or TP1 U5, Pin 1 0.00 to +0.
50 Calibration Welch Allyn Propaq CS Vital Signs Monitor Calibrating realtime ECG out 1. 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. Connect the dc-coupled oscilloscope probe to P9 pin 6 on the Digital PCB, and the reference probe to TP4 on the Digital PCB. 5. On the Analog Board, carefully short together U55 pins 1 and 2. 6. Adjust RP6 on the Analog PCB to 0.0 ± 0.1 V dc. 7.
Service Manual Calibration 51 Noninvasive Blood Pressure calibration 1. 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. Wrap the adult cuff around the black tube volume or a cylindrical object about the size of an adult’s arm. 4.
52 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” high frequency noise. 13. Disconnect all patient inputs to the monitor’s left side panel.
Service Manual Calibration 53 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. 1. Connect the IBP simulator to P1 on the monitor left side panel. 2. Set the patient simulator to 0 mmHg. 3. Press ZERO P1 to zero the channel. 4. Set the patient simulator to 200 mmHg. 5.
54 Calibration Welch Allyn Propaq CS Vital Signs Monitor MSP Board (MCO2) 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 MCO2 performance/accuracy. The other adjustment (RP1) is a barometric pressure/ altimeter setting. This adjustment is set at Welch Allyn during the production calibration process and does not require readjustment for use at other altitudes. Note 1.
55 5 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. For information about other messages, refer to the Propaq CS Directions For Use. PROGRAM FAULT: SETTINGS LOST, TIME/DAY RESET.
56 Troubleshooting Welch Allyn Propaq CS Vital Signs Monitor LACK OF WAVE, CHECK ADAPTER, SENSOR - (MCO2). 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 CO2 sensor. SENSOR FAILURE, CALIBRATION ERROR - (MCO2). A Sensor failure has occurred. Replace the sensor. PUMP FAILURE, SERVICE REQUIRED - (SCO2). The sidestream pneumatic tubing is kinked or a pump failure on the SSP board has occurred.
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. 57 Battery capacity check Several variables affect monitor operating time on battery: • active options • frequency of NIBP measurements • frequency and length of printouts • ambient temperature, • battery age and condition • displayed information.
58 Troubleshooting Welch Allyn Propaq CS Vital Signs Monitor
59 6 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, SpO2, Mainstream CO2 , Sidestream CO2) • SpO2-only module This section also describes how to replace the input fuse and battery pack. Note In general, re-assembly procedures are the opposite of the disassembly procedures.
60 Repair procedures Note Welch Allyn Propaq CS Vital Signs Monitor 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. Caution POSSIBLE DAMAGE FROM STATIC DISCHARGE All calibration, service, and repair must be done at a static-protected work station.
Service Manual Repair procedures 61 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” on page 64. For instructions on how to remove the SpO2 module, refer to “Removing the dual battery in expansion module” on page 66.
62 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 • LCD display module • Front Chassis plastic assembly with touchscreen, gasket, and elastomeric LED lens Front Chassis with touchscreen Display gasket Display, Digital Board, and Analog Board (assembled) Display Digital Board
Service Manual Repair procedures Interface chassis The Interface Chassis is available either with or without the Nurse Call option.
64 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.
Service Manual Repair procedures 65 Keep the battery away from children. Do not disassemble it and do not incinerate or burn it. 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.
66 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: 1. Using a flat blade screwdriver, unscrew the four screws securing the battery pack cover as shown below. Battery pack Battery pack cable Monitor cable Battery pack cover 2. Disconnect the monitor cable from the battery pack cable. 3. Remove the battery pack from the monitor. 4.
Service Manual Repair procedures 67 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. disconnecting battery cable from monitor 4. Continue to slide the monitor forward until it can be completely separated from the Expansion Module. 5.
68 Repair procedures 7. 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. Removing the dual battery in SpO2 module The steps for removing the battery pack from the SpO2 module are similar to the steps required to remove the battery from the Expansion Module.
Service Manual Repair procedures 69 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. Slightly spread the casing open at the top until you can disconnect the pressure transducer tube indicated below. Disconnect tubing from pressure transducer 4. Spread the casing open to an angle of 45 degrees. 5.
70 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor P1 removal 6. Spread the casing open to an angle of about 45-60 degrees. 7. 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. • Cable to P6 on the Analog Board, from left side panel IPB connector on the Rear Chassis. • Cable to P7 on the Analog Board, from left side panel temperature jack on the Rear Chassis.
Service Manual Repair procedures 71 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 P10 Note The two halves are sealed by rubber gaskets that are recessed around the perimeter of the Rear Chassis. If the gaskets become loose, replace them in the perimeter before reassembling the monitor. 9. Separate the Interface Chassis from the Rear Chassis (see below).
72 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Closing the monitor 1. 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. • Cable to P5 on the Analog Board goes over and in front of the cable to P6. • Cable to P7 on the Analog Board goes under the cable to P6. • Cable to P1 (the expansion cable) must not lay over the transformer.
Service Manual Repair procedures 73 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. Note The Interface Chassis and Front Chassis are sealed by rubber gaskets that are recessed around the perimeter of the Front Chassis.
74 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. Components are located as close as 1/8" to the edge of the board. Use extreme caution. Try not to flex the board when prying. 6.
Service Manual Repair procedures 75 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. The Digital Board is located beneath the Analog Board.
76 Repair procedures 7. Welch Allyn Propaq CS Vital Signs Monitor Remove the nine screws connecting the Digital Board to the Display (see below).
Service Manual Repair procedures 77 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. • Use ionized air to blow debris out of the Front Chassis before placing the assembled boards (Digital Board, Display, and Analog Board) back into the Front Chassis.
78 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). Caution The fuse is heat sensitive and must be soldered with heat sinks in place between the fuse body and the solder joint. 1.
Service Manual Repair procedures 79 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.
80 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. When removing a cable, be sure to note the routing. Be sure to route the new cable in the same manner.
Service Manual Repair procedures Fingers Beveled Corner PROM Beveled Outside Corner Slot Slot 1097-02 81
82 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. If you encounter air leaks that can not be found from the tests in this manual, replace the O-ring first. WARNING Use of NIBP channel with leaking cuff hose fittings may result in inaccurate non-invasive blood pressure measurements. 1.
Service Manual Repair procedures 83 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. 1. Remove the battery pack (“Removing the single battery pack” on page 66). 2. Open the monitor (“Opening the monitor” on page 68). (Remove the Rear Chassis from the Interface Chassis). 3.
84 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. The terminals may become damaged if force is applied against them.
Service Manual Repair procedures 85 Replacing the pump New wires and a connector are provided with the replacement pump kit. 1. 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). 4. Unplug the pump cable from the Recharger Board. 5. Disconnect the tubing from the pump. 6. Cut the tie wraps securing the pump to the Recharger Board. 7.
86 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 1. Remove the battery pack (“Removing the single battery pack” on page 66). 2. Open the monitor (“Opening the monitor” on page 68). 3.
Service Manual Repair procedures 87 Removing the left side panel 1. 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). 4.
88 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor side panel routing ROUTE CABLE BUNDLE ALONG BOTTOM OF REAR CHASSIS Note Uncovering the protective paper in the next step exposes the adhesive on the gasket. Do not touch or otherwise contaminate the adhesive, or the adhesive may not properly seal the side panel. 4. On the new side panel, remove the protective paper from the gasket attached to the side panel.
Service Manual Repair procedures 0696-45 89
90 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 CO2 option) • CO2 connector side panel • SCP/SpO2 Board (units with printer and SpO2 options) • SpO2 connector side panel • SpO2 speaker side panel • front panel assembly with pushbuttons • SSP Board (units with Sidestream CO2) • Stick Board (units with Sidestream
Service Manual Repair procedures 91 Opening Expansion Module rear panel 1. Separate the monitor and Expansion Module (“Removing the dual battery in expansion module” on page 66). Note For all Sidestream CO2 options (226, 227, 228, or 229) remove the front panel (“Replacing Expansion Module front panel” on page 93) and the extender board (“Replacing the Extender Board” on page 100) before proceeding with the rear panel removal. 2.
92 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Closing Expansion Module 1. 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. Connect the printer cable and expansion cable to the SCP or MSP Board. expansion rear panel Gasket Material 0696-47 4.
Service Manual Repair procedures 93 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. The Expansion Module front panel is attached to the Chassis with four screws. Use the following procedure to remove the front panel: 1. Remove the four screws (see the figure below) holding the front panel. 2.
94 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. A plastic button and flexible contact touches the contact area on the button board when a button is pressed. Use the following procedure to remove the button board and buttons: 1.
Service Manual Repair procedures 95 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. Replace these as a unit. Removing printer Remove the Printer Assembly according to the following instructions. 1. Remove any printer paper. 2.
96 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Installing the printer 1. 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. 3.
Service Manual Repair procedures 97 Opening the SpO2 Module 1. Separate the SpO2 module from the monitor according to the procedure “Removing the dual battery in expansion module” on page 66. 2. Two tabs secure the SpO2 module rear panel to the SpO2 module chassis. Using a small screwdriver or your finger, press on each of the tabs inside the SpO2 module chassis while applying pressure to separate the rear panel from the chassis.
98 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Replacing the SpO2 Boards The following instructions describe how to replace the two SpO2 Boards in the SpO2 module and in the Expansion Module without a CO2 option. Instructions for replacing SpO2 Boards in an Expansion Module with a CO2 option are described in “Replacing the MSP/SpO2 Boards” on page 99. Caution When replacing the SpO2 Boards, remove both boards with the patient connector side panel still connected.
Service Manual Repair procedures 99 Replacing the MSP/SpO2 Boards The following instructions describe how to replace the MSP/SpO2 Boards in the Expansion Module with a CO2 option. Instructions for replacing SpO2 Boards in SpO2 module and Expansion Module without a CO2 option installed are described in “Replacing the SpO2 Boards” on page 98 Caution When replacing the MSP/SpO2 Boards, remove both boards with the patient connector side panel still connected.
100 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) • reconnect the Mainstream CO2 patient connector cable Replacing the Sidestream CO2 assemblies The following instructions describe how to replace the Sidestream CO2 option assemblies in the Expansion Module.
Service Manual Repair procedures 101 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. J7 Stick Board Retainer Retainer Pump Pressure Transducer Screws No connection 1097-18 SSP Board Pneumatic Reservoir J4 Water Trap Receiver Exhaust Port Hole 1097-19 1.
102 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor Removing the Stick Board from the SSP Board 1. Disconnect the tubing from the pump and pressure transducer PT2 on the frontfacing side of the SSP Board and the pneumatic reservoir on the rear-facing side. 2. Remove the two screws from the front-facing side of the SSP Board that secure two slotted nylon Stick Board retainers. 3. Pull the Stick Board up to free it from connector J7 and remove it from the SSP Board.
Service Manual Repair procedures 103 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. (See “Replacing the SpO2 Boards” on page 98 or “Replacing the MSP/SpO2 Boards” on page 99.
104 Repair procedures Welch Allyn Propaq CS Vital Signs Monitor
105 7 Technical overview Introduction This section describes the electronics of the Propaq CS monitor and three of its options: Printer, Pulse Oximetry (SpO2), and Capnography (CO2). 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. When replacing modules or components, refer to “Repair procedures” on page 59. Part numbers are identified in “Field Replaceable Units (FRUs)” on page 129.
106 Technical overview Welch Allyn Propaq CS Vital Signs Monitor Monitor options Analog Board Monitor Digital Board Display Standard Interface Chassis Recharger Board Display Gasket Left Side Panel Right Side Panel Rear Chassis Front Chassis with Touchscreen 0696-12 Rear Panel SpO2 Connector SCP Board SpO2 Board SpO2 Speaker Front Panel SpO2-Only Module Option 210 1097-15
Service Manual Technical overview Filler Panel Rear Panel Main Housing Filler Panel Printer Expansion Module Option 221 printer Printer Door Front Panel, no SCO2 1097-04 SpO2 Connector Panel Rear Panel SpO2 Board Speaker Panel Main Housing SCP Board Printer Expansion Module Option 223 printer SpO2 Printer Door Front Panel, no SCO2 1097-05 SpO2 Connector Panel Rear Panel CO2 Connector Panel SpO2 Board Speaker Panel Main Housing MSP Board Front Panel, no SCO2 Expansion Module Option 224 SpO2
108 Technical overview Welch Allyn Propaq CS Vital Signs Monitor SpO2 Connector Panel Rear Panel CO2 Connector Panel SpO2 Board Speaker Panel Main Housing 08 MSP Board Expansion Module Option 225 printer SpO2 MCO2 Printer Printer Door 1097-07 Front Panel, no SCO2 SpO2 Connector Panel Rear Panel SpO2 Board Speaker Panel Main Housing MSP Board Expansion Module Option 226 SpO2 SCO2 SSP Board Extender Board Front Panel, with SCO2 1097-08 Stick Board SpO2 Connector Panel Rear Panel SpO2 Board Sp
Service Manual Technical overview SpO2 Connector Panel Rear Panel CO2 Connector Panel SpO2 Board Speaker Panel Main Housing 08 MSP Board Expansion Module Option 228 SpO2 MCO2 SCO2 SSP Board Extender Board Front Panel, with SCO2 Stick Board 1097-10 SpO2 Connector Panel Rear Panel CO2 Connector Panel SpO2 Board Speaker Panel 03 Main Housing MSP Board Printer SSP Board Printer Door Extender Board Front Panel, with SCO2 hardware layout Stick Board Expansion Module Option 229 printer SpO2 MCO2 SCO
110 Technical overview Welch Allyn Propaq CS Vital Signs Monitor monitor systemsystem block SYSTEM BLOCK DIAGRAM MONITOR CHASSIS ANALOG BOARD ANALOG PATIENT DATA means optional configuration (PATIENT DATA ACQUISITION, ANALOG-TO-DIGITAL CONVERSION, ISOLATED CPU, ISO/NON-ISO POWER SUPPLIES, REAL-TIME ECG OUT) REAL-TIME ECG OUT LOCATED IN FRONT CHASSIS CUFF PRESSURE POWER/ CONTROL DATA DISPLAY DIGITAL BOARD RECHARGER BOARD BATT RECHARGER NIBP PUMP & VALVES LOCATED IN REAR CHASSIS (NON-ISOLATED C
Service Manual Technical overview 111 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.
112 Technical overview Welch Allyn Propaq CS Vital Signs Monitor power electronics system VCC_OVERVOLTAGE BACKLIGHT_ON/OFF POWER SYSTEM DIAGRAM DISPLAY CONTROLLER +3.3V_OVERVOLTAGE F4 F3 +VSW CCFL SUPPLY +3.3V SUPPLY DISPLAY, +3.3V LOGIC +5V SUPPLY PCMCIA CONTROLLER SHUTDOWN/ PWR_SWT_COM F2 RF_SUPPLY_EN +VSW MONITOR POWER CONTROL DIGITAL BOARD RECHARGER BOARD T1PIN7 +VSW ISO 5.9V SUPPLY T1PIN8 T1PIN9 BATT_TAP LOW_VCC INFREQ_INT/ 5.
Service Manual Technical overview 113 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 and page 115.
114 Technical overview Welch Allyn Propaq CS Vital Signs Monitor Digital board interconnect diagram (2.
Service Manual Digital board interconnect diagram (5 GHz radio card) Technical overview 115
116 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 • protects the patient from cuff over-inflation The NIBP air system consists of the pump, air valves, transducers, and the cuff.
Service Manual Technical overview NIBP PNEUMATICS AT REST BETWEEN MEASUREMENTS TO DAP A-D CONVERTER PRIMARY TRANSDUCER SERVO (LINEAR) VALVE CLOSED CUFF DUMP VALVE OPEN BLEED VALVE OPEN PUMP OFF 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 TO DAP A-D CONVERTER PRIMARY TRANSDUCER CUFF SERVO (LINEAR) VALVE PARTIALLY OPEN DUMP VALV
118 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 DUMP VALVE CLOSED BLEED VALVE OPEN PUMP OFF SECONDARY TRANSDUCER TO DCP A-D CONVERTER ATMOSPHERIC PRESSURE INCREASING PRESSURE (INFLATION) 0696-64 DECREASING PRESSURE (DEFLATION) PRESSURIZED (TARGET REACHED) NIBP PNEUMATICS DURING MEASUREMENT BLEED TO DAP A-D CONVERTER PRIMARY TRANSDUCER CUFF SERVO (LINEAR) VALVE PAR
Service Manual Technical overview NIBP PNEUMATICS AFTER MEASUREMENT COMPLETE TO DAP A-D CONVERTER PRIMARY TRANSDUCER CUFF SERVO (LINEAR) VALVE CLOSED* DUMP VALVE OPEN BLEED VALVE OPEN PUMP SECONDARY TRANSDUCER OFF TO DCP A-D CONVERTER ATMOSPHERIC PRESSURE INCREASING PRESSURE (INFLATION) DECREASING PRESSURE (DEFLATION) PRESSURIZED (TARGET REACHED) * VALVE IS INITIALLY CLOSED, BUT OPENS AFTER INITIAL DUMPING BEGINS BY DUMP VALVE. THIS CHECKS INTEGRITY OF DUMP VALVE'S ABILITY TO OPEN.
C C B C B B D A D A T2 T1 E VPOS GND HVENBL/ GND GND INV1VBHI1 INV1+ VBLO1 IBPSHLD INV2VBHI2 INV2+ VBLO2 IBPSHLD YSITIP1 YSIRING1 IAG YSITIP2 YSIRING2 IAG RL (E) RA (A) LA (B) LL (C) C (D) SHLD(F) SIMPWR P11 (A) (B) (C) (D) (E) (A) (B) (C) (D) (E) 1 3 5 7 9 2 4 6 8 10 REAR CHASSIS RECHARGER PCB P6 P7 P5 GROUND GROUND GROUND GROUND GROUND GROUND GROUND GROUND GROUND GROUND VMOD2 VMOD1 SHUTDOWN/ +12V VNEG 2 4 6 8 10 12 14 16 18 20 P12 1 3 5 7 9 11 13 15 17 19 T1PIN8 T1PIN7 X X -
Service Manual Technical overview 121 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. The main circuit board in the Printer is the Printer Main Board.
122 Technical overview Welch Allyn Propaq CS Vital Signs Monitor PRINTER FUNCTIONAL BLOCK DIAGRAM P502 P150 FROM BATTERY PRINTER POWER PWR (0..9) PRINTER DRIVER TO MOTOR P501 TO PAPER OUT DET. MOT (0..5) P402 P1 EXPANSION VCC SYSTEM POWER PRINTER CPU TO HEAD UP DET. P400 TO KEY BOARD AD (0..7) P140 FROM/TO PROPAQ PRINT HEAD HEAD (0..
Service Manual Technical overview 123 Pulse oximetry option (SpO2) description The monitor pulse oximetry option (SpO2) hardware includes two circuit boards, a sidepanel 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 CO2 option are also present.
124 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 • CPU/Control • LED current drivers • compare amplifiers The CPU detects the presence of a transducer plugged into the D-type connector.
Service Manual Technical overview spo2 block PULSE OXIMETRY BLOCK DIAGRAM AC COUPLED AMP INTERNAL PREAMP INVERTING AMP (VAR.
126 Technical overview Welch Allyn Propaq CS Vital Signs Monitor Capnography (CO2) description Two capnography (CO2) monitoring options are available—the Mainstream-sampling CO2 option (MCO2) and the Sidestream-sampling CO2 option (SCO2). Both Mainstream CO2 and Sidestream CO2 options are available in one product. However, only one sampling method may be monitored at any time—simultaneous monitoring of MCO2 and SCO2 is not supported.
Service Manual Technical overview 127 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. Isolated Circuitry. The Isolated Circuitry directly controls the hardware responsible for the CO2 measurement function. CPU Circuitry.
128 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 CO2 and SpO2 circuit operations is derived solely from the expansion connector.
129 8 Field Replaceable Units (FRUs) To order a field-replaceable unit, contact Welch Allyn Technical Support as described in page ii. 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 RADIO/ANTENNA ASSY., 5 GHz, 802.
130 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.
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 SPO2 CONNECTOR PANEL, NELLCOR MP-203 (W/O LABEL) 020-0190-00 SPO2 CONNECTOR PANEL, NELLCOR MP-405 010-0210-02 SPO2 CONNECTOR PANEL, NELLCOR MP-
132 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 LABEL, LEFT SIDE PANEL, 2X2/RESP.
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 008-0012-01 133
134 Field Replaceable Units (FRUs) Welch Allyn Propaq CS Vital Signs Monitor
135 A 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. (USED TO ADJUST RECHARGER POWER SUPPLIES) USE RESISTOR NETWORKS TO RIGHT AND CREATE TWO (2) SEPARATE TEST LOADS: 4.9 OHM AND 4.65 OHM LOADS 1 2 3 4 5 CONNECTOR: 5-PIN, 0.
136 Manufacturable test equipment Welch Allyn Propaq CS Vital Signs Monitor
137 B 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. Erroneous readings result. The patient simulator must be modified as described here before you can use both simulator channels with the Propaq CS monitors with IBP.
138 Fluke patient simulator modification Welch Allyn Propaq CS Vital Signs Monitor W1 W2 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.
