Welch Allyn Propaq Encore Service Manual
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Welch Allyn Propaq Encore Service Manual

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Summary of Contents for Welch Allyn Propaq Encore

  • Page 1 Propaq Encore ® Service Manual...
  • Page 2 • All rights are reserved. No one is permitted to reproduce or duplicate, in any form, the whole or part of this manual without permission from Welch Allyn. • Welch Allyn will not be responsible for any injury to the user or other person(s) that may result from accidents during operation of the Propaq monitor.

  • Page 3: Table Of Contents

    Other Applicable Documents ..............13 Unpacking Procedure ................14 Warranty Service ..................14 Technical Support Services ............... 14 Recommended Service Intervals .............. 15 Identifying Propaq Encore Configurations..........16 Self Test and Service Menus..............18 Section 2 Functional Verification Introduction....................21 Self Tests ....................21...
  • Page 4 Non-Recoverable Error Codes ............60 Battery Capacity Check................61 Section 5 Repair Procedures Introduction ....................63 Propaq Encore Software ................63 Required Tools .................... 64 Propaq Encore Options ...............64 Field Replaceable Units in the Monitor ........... 65 Replacing the Power Input Fuse............... 68 Replacing the Battery Pack ................
  • Page 5 IPC Expansion ..................142 Power Distribution System ..............142 CO2 Analysis Chamber (Bench) ............142 Section 7 Field Replaceable Units (FRUs) List of FRUs ....................143 Appendix A Manufacturable Test Equipment Introduction....................149 Appendix B Dynatech/Nevada Patient Simulator Modification Introduction....................151 Welch Allyn...
  • Page 6 Propaq Encore Service Manual...

  • Page 7: Safety Summary Warnings

    Safety Summary Warnings This Safety Summary should be read by all Propaq Encore users. Specific warnings and cautions will be found 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 8 To ensure conformance to risk (leakage) current requirements when operating from an ac mains power source, use only a Welch Allyn’ 503-0054 series power adapter. To ensure patient safety, use only accessories recommended or supplied by Welch Allyn. For a list of those accessories, see the Welch Allyn Products and Accessories book that accompanied this manual (PN 810-0409-XX).

  • Page 9: Definitions

    CAUTION statements in the service manual, which look like this, identify conditions or practices that could result in damage to equipment or other property. Warning WARNING statements in the service manual, which look like this, identify conditions or practices that could result in personal injury. Welch Allyn...

  • Page 10: Symbols

    0123 registration number signify Propaq met all essential requirements of Encore 200 Series monitors have met all European Medical Device Directive 93/ essential requirements of European 42/EEC for a Class 1 product. medical device directives 93/42/EEC. Propaq Encore Service Manual...
  • Page 11 Canadian medical safety standards. Standard UL 2601-1. Apply the NIBP cuff as shown. NIBP cuff sizes: Thigh Large adult Adult Single-use only (not reusable). Small adult Child Infant 1. This symbol is on the Universal Power Adapter. Welch Allyn...
  • Page 12 Symbols Safety Summary Propaq Encore Service Manual...

  • Page 13: Overview

    Overview Purpose and Scope The Propaq Encore Service Manual is intended as a reference for monitor maintenance and repair to the field replaceable unit (FRU) level. FRUs are listed in Section 7. This manual provides the technically qualified service person with troubleshooting information, repair procedures, and calibration and performance verification instructions.

  • Page 14: Unpacking Procedure

    Note Save the shipping carton and packing material for repacking the Encore monitor in case it needs to be sent to a repair center or back to Welch Allyn for service. Warranty Service DO NOT ATTEMPT TO REPAIR the Encore monitor yourself during the warranty period. For service and repair, contact Welch Allyn as described below.

  • Page 15: Recommended Service Intervals

    Functional Verification. Warning If the monitor is opened for repair or calibration, a dielectric strength test must be completed to ensure the integrity of the patient isolation barrier. The dielectric strength test procedure is provided in Section 2. Welch Allyn...

  • Page 16: Identifying Propaq Encore Configurations

    Identifying Propaq Encore Configurations Section 1—Overview Identifying Propaq Encore Configurations The following table identifies Propaq 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.
  • Page 17 Section 1—Overview Identifying Propaq Encore Configurations Expansion Module Option Configurations Top Level Mainstream Sidestream Option Printer 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 MP-507 007-0116-XX Nellcor MP-203...

  • Page 18: Self Test And Service Menus

    If a self-test results in a failure, a message and error code are displayed indicating the failure mode. Refer to Section 4 and contact Welch Allyn Technical Support for help. The Encore monitor contains software routines that make the Functional Verification and Calibration procedures quicker and easier.
  • Page 19 CHECKER 1 CHECKER 2 BORDER PREV MENU LOOP TEST OUT TEST PREV MENU MAIN CAL MAIN TEST SIDE CAL SIDE TEST PREV MENU SETTINGS KEY TEST SYSTEM MORE KEY 0 KEY 1 KEY 2 KEY 3 PREV MENU Welch Allyn...
  • Page 20 Self Test and Service Menus Section 1—Overview Propaq Encore Service Manual...

  • Page 21: Functional Verification Introduction

    During the monitor’s power-up self-test, the integrity of all programming is checked first. If software testing is successful, hardware tests are initiated. If all testing is successful, the monitor is ready for use. (See Section 4 for information on error messages.) Welch Allyn...
  • Page 22 Welch Allyn cuff calibration kit, Welch Allyn PN 008-0012-XX Power supply adapter cable, Welch Allyn PN 008-0290-00 Physio Control LifePak 5 or LifePak 6s with appropriate Welch Allyn Defib Sync adapter to use as Defib Sync Marker pulse source Propaq ac power adapter (provided with the Encore)

  • Page 23: Safety Tests

    Electrical Connections for Patient Risk (Leakage) Current Safety Tests Monitor Safety Safety Test Power Adapter Monitor Cable dc Input Analyzer Source current Plugged into Connected to analyzer outlet power adapter Sink current Not used Connected to ground connector on analyzer Welch Allyn...

  • Page 24: 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 25: Functional Verification

    8. Turn off the dc power supply. 9. Using the Welch Allyn dc power supply adapter cable, refer to the figure below for polarity and connect the dc power supply to the monitor's dc input connector on the right side panel.
  • Page 26 1.8 A. 13. Vary the power supply from 12 V to 28 V and verify that the charging LED stays on. 14. Turn off the power supply. 15. Disconnect the supply from the monitor. Propaq Encore Service Manual...

  • Page 27: System Tests

    OFF. Set the volume to LOW. 12. Press MAIN MENU. 13. Press SETUP > MORE > MORE (> TIME/DAY for monitor software less than version 2.0) and check that the displayed time and date are correct. Welch Allyn...

  • Page 28: Ecg/Resp Channel & Alarm Indicators

    10. Check that the monitor’s displayed respiration peak-to-peak amplitude is 12.5 ±1 mm. 11. Press FREEZE/UNFREEZE to unfreeze the display. 12. Check that the monitor's heart rate display is 80 ± 4 bpm. 13. Disconnect the LA ECG lead wire from the simulator. Propaq Encore Service Manual...
  • Page 29 36. Set the oscilloscope to 0.2 second/division sweep and 0.5 Volt/division amplitude. 37. Insert a short piece of thin conductive wire into each of the ECG X1000 connector holes shown in the figure below or use real time ECG Out cable 008-0320-00. Welch Allyn...
  • Page 30 43. Disconnect the scope probe and ground clip and remove the wires from the connectors. 44. Using either a LifePak 5 or LifePak 6s and appropriate Welch Allyn adapter, set up the monitor and defibrillator according to instructions provided in the Defib Sync User’s Guide.

  • Page 31: Ibp

    The following procedure verifies the operation of the invasive blood pressure channels. Some models of the Propaq Encore have no IBP channels; skip this procedure if your Encore does not support IBP. If your Encore has multiple IBP channels, repeat the verification procedure for each channel.

  • Page 32: Nibp

    7. 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 tolerance listed in the following table. Pressure Tolerance (mmHg) (mmHg) ± ± ± Propaq Encore Service Manual...

  • Page 33: Temperature

    This functional verification procedure helps to confirm the proper operation of the Masimo Pulse Oximetry option installed in the Propaq monitor. This procedure supports the requirements of routine preventive maintenance. No monitor disassembly is required to perform this procedure. Welch Allyn...

  • Page 34: Functional Verification For Nellcor Spo2

    Confirm that the displayed saturation is 94% ±4 counts, and the displayed pulse rate is 60 ±4 bpm. 5. Disconnect the sensor from the simulator. 6. Check that an equipment alarm occurs. 7. Press any button to acknowledge the discontinuance of SpO monitoring. 8. Press MAIN MENU. Propaq Encore Service Manual...

  • Page 35: Printer Tests

    7. Press the printer's START/STOP button. The printer should begin continuous printing. 8. Press the START/STOP button to stop printing. 9. Lay the Propaq Encore on its back. 10. Press the START/STOP button to start printing. 11. Completely open the paper door on the bottom of the Expansion Module.

  • Page 36: Co 2 Verification Preparation

    For worldwide locations, equivalent altimeter statistics, in millimeters of mercury, may be obtained from local agencies. Propaq Encore Service Manual...
  • Page 37 The local barometric pressure (as calculated in Example 1 above) is 635.92 mmHg. The certified CO gas percentage is 5.00%. Determine the CO partial pressure by multiplying (635.92) x (0.0500). This gives the partial pressure of the CO as 31.8 mmHg. Welch Allyn...
  • Page 38 743.67 3600 666.20 9200 539.08 18667 369.20 740.97 3700 663.73 9400 534.94 19000 364.13 738.28 3800 661.27 9600 530.82 19333 359.12 735.61 3900 658.82 9800 526.72 19667 354.15 1000 732.93 4000 656.38 10000 522.65 20000 349.24 Propaq Encore Service Manual...
  • Page 39 5850 361.22 690.63 2500 560.16 4200 450.41 5900 358.76 686.47 2550 556.65 4250 447.47 5950 356.31 682.33 2600 553.16 4300 444.54 6000 353.88 678.21 2650 549.68 4350 441.63 6050 351.46 1000 674.11 2700 546.23 4400 438.74 6100 349.05 Welch Allyn...

  • Page 40: Mainstream Co Verification Procedure

    41 for possible error sources. Always verify the test setup to minimize errors. 11. Disconnect the test gas source and other test equipment. 12. Disconnect the CO sensor from the monitor. Propaq Encore Service Manual...
  • Page 41 1. 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. If installed, remove the water tap from the receiver on the front left panel of the expansion module Welch Allyn...
  • Page 42 Wait for SRCH to appear in the SCO numerics window. 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. Propaq Encore Service Manual...
  • Page 43 (sandwich sized) with the zip lock closed as far as possible without pinching the tubing. This will slightly pressurize the bag with the test gas. 28. Wait two minutes for the bag to fully equalize with the test gas. Welch Allyn...
  • Page 44 33. Check that the observed instantaneous CO value is within 3mmHg or 10%, whichever is greater, of the calculated value from step 30 (round up all half values on the service screen to the next higher mmHg). 34. Disconnect the test setup. Propaq Encore Service Manual...

  • Page 45: Calibration Introduction

    Section 3 Calibration Introduction This section provides calibration procedures for the Propaq Encore. These procedures allow you to calibrate the Encore to Welch Allyn factory specifications. Calibrations procedures should be performed only by qualified service personnel. Calibration procedures must be performed whenever a question arises as to the performance of the Encore, and as indicated in Section 1.

  • Page 46: Equipment Needed

    Equipment Needed Section 3-Calibration Equipment Needed You will need the following equipment to calibrate the Propaq Encore 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 47: Procedures

    Section 3-Calibration Procedures Procedures This section contains procedures for calibrating the Propaq Encore monitor: • Recharger board • Analog board • Digital board Caution All calibration, service, and repair must be done at a static-protected work station. Failure to protect against damage due to static discharge can damage components in the Propaq Encore.

  • Page 48: Recharger Supply Adjustments

    F1 (on the right side panel) to open. If you suspect that RP3 has been misadjusted, turn it fully clockwise before connecting power to the dc input jack on the Propaq Encore. Propaq Encore Service Manual...
  • Page 49 16. Decrease the power supply voltage from 12V to 7V while checking the right side panel green LED. The LED should turn off between 7 and 12V. 17. Disconnect the adapter cable from the Encore’s right side panel. 18. Remove the 4.9Ω test load and replace it with the 4.65Ω test load. Welch Allyn...

  • Page 50: Display Voltage Adjustments

    Encore. Note that when you turn the power on and off you initiate an equipment alert. Press any one of the five bottom buttons to reset. 2. Connect the DMM positive lead to the D33 cathode. Propaq Encore Service Manual...

  • Page 51: Main Power Supply Adjustments

    1. Turn off the monitor. 2. Remove the metal shield from the analog board. (Note the two different screw sizes; refer to Section 5 for instructions, if necessary.) Welch Allyn...
  • Page 52 Isolated TP43 or TP1 +4.91 to +5.09 TP43 or TP1 +6.58 to +7.15 –VS TP43 or TP1 TP21 -6.65 to -7.15 TP43 or TP1 TP13 +5.40 to +6.10 +5.6 TP43 or TP1 TP33 +5.55 to +5.70 Propaq Encore Service Manual...
  • Page 53 (+VR + 0.2V) to -(VR + 0.35V) +2.5 TP43 or TP1 TP17 +2.48 to+2.52V a. Make sure the ECG input connector (P5) is disconnected from the analog board for this measurement. Reconnect when done. 8. Disconnect the DMM leads. Welch Allyn...

  • Page 54: Calibrating Realtime Ecg Out

    6. Adjust RP6 on the Analog board to 0V dc ± 0.1V. 7. Remove the short and check for an ECG signal displayed on the oscilloscope of 1.0V± 0.1V baseline to peak of the R-wave. 8. Disconnect the ECG cable from the monitor. PIN 6 0696-77 Propaq Encore Service Manual...

  • Page 55: Non-Invasive Blood Pressure Calibration

    DIAG: BLEED: mmHg/min PUMP: secs AUTO PMP NIBP CAL ZERO PREV MENU PUMP TEST 6. Manually change the system pressure to check linearity tolerances at the following levels: Pressure Tolerance (mmHg) (mmHg) ± ± ± ± ± ± Welch Allyn...

  • Page 56: Emi Null Adjustment

    2. Set the patient simulator to 0mmHg. 3. Press ZERO P1 to zero the channel. 4. Set the patient simulator to 200mmHg. 5. Adjust RP5 for a numeric reading of 200mmHg on the Encore monitor screen. Propaq Encore Service Manual...

  • Page 57: Msp Board (Mco2) Calibration

    MCO 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 The verification section of this manual (Section 2) provides a procedure to verify...
  • Page 58 Section 3-Calibration Note Because the battery was disconnected in the calibration procedures, you will need to reset the time, date and all saved settings. See the Propaq Encore Reference Guide for information on resetting these parameters. Propaq Encore Service Manual...

  • Page 59: Troubleshooting

    PROGRAM FAULT: SETTINGS LOST, TIME/DAY RESET. If this message appears when the Propaq Encore is first turned on, it generally indicates a drained battery. The monitor can be used, but the time and date and all other settings will return to factory defaults each time the monitor is turned off.

  • Page 60: Non-Recoverable Error Codes

    SSP board. Replace the SSP board. Non-Recoverable Error Codes Non-recoverable errors are detected by software and indicate the Propaq Encore is no longer able to function properly and must be returned to Welch Allyn for service. Contact Welch Allyn Technical Support.

  • Page 61: Battery Capacity Check

    • battery age and condition • displayed information. Refer to the Propaq Encore Reference Guide for battery care information and expected operating times. If the monitor fails to operate on battery for an extended period of time, follow the procedure below to check the capacity of the Encore’s lead acid battery. Lead acid batteries have a very limited shelf life;...
  • Page 62 Battery Capacity Check Section 4-Troubleshooting Propaq Encore Service Manual...

  • Page 63: Repair Procedures Introduction

    These procedures are located in Section 2. Propaq Encore Software Propaq Encore system software is contained in PROMs (programmable read-only memory) on various system board. The following PROMs may require replacement during board exchange processes. Refer to procedure on page 91 for replacement instructions.

  • Page 64: Required Tools

    Propaq Encore Options Your Propaq Encore 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 69. For instructions on how to remove the SpO module, refer to Removing the Dual Battery in SpO2 Module on page 73.

  • Page 65: Field Replaceable Units In The Monitor

    Field Replaceable Units in the Monitor The front chassis of the monitor contains the following components: • insulator • Analog board with metal shield and insulator • Digital board with shields • EL display unit • front chassis with display filter and gasket Welch Allyn...
  • Page 66 Field Replaceable Units in the Monitor Section 5-Repair Procedures Plastic Insulator Analog Board with Shield Digital Board Top Shield Digital Board Brackets EL Display Panel Front Chassis 0696-11 Propaq Encore Service Manual...
  • Page 67 Field Replaceable Units in the Monitor The rear chassis contains the following components: • Recharger board • Side panels (right and left) • NIBP pump • NIBP tubing • NIBP valves Recharger Board Right Side Panel Left Side Panel Rear Chassis 0696-12 Welch Allyn...

  • Page 68: Replacing The Power Input Fuse

    The F1 fuse protects the Recharger board circuitry against excessive current at the dc input connector. You do not need to disassemble the Propaq Encore to replace this fuse. Check fuse F1 if the ac power adapter is functioning properly and the following two conditions exist: •...

  • Page 69: Replacing The Battery Pack

    Do not try to service the battery fuses. Insert a new battery pack into the Propaq Encore when the current battery no longer holds an adequate charge. Verify the battery charges to capacity according to the Battery Capacity Test in Section 4.

  • Page 70: Removing The Single Battery Pack

    Pack Cover Battery 0696-13 Pack Cable 2. Disconnect the battery pack cable from the battery pack. 3. Remove the battery pack from the monitor. 4. Store the battery in a safe place while disassembling the monitor. Propaq Encore Service Manual...

  • Page 71: Removing The Dual Battery In Expansion Module

    2. Use the flat blade screwdriver to gently loosen the expansion module from the monitor (see inset above). 3. Slide the monitor forward until you can disconnect the battery pack cable from the monitor's power cable (see figure on page 72). The battery pack should remain in the expansion module chassis. Welch Allyn...
  • Page 72 6. Disconnect the battery connector from the expansion module (see figure below). 7. Remove the dual battery pack from the expansion module. 8. Store the battery in a safe place while disassembling the monitor and expansion module. Propaq Encore Service Manual...

  • Page 73: Removing The Dual Battery In Spo2 Module

    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 in the figure below. Welch Allyn...
  • Page 74 • Cable to P6 on the Analog board, from the left side panel IPB connector on the rear chassis. • Cable to P7 on the Analog board, from the left side panel temperature jack on the rear chassis. Propaq Encore Service Manual...
  • Page 75 8. Detach the two ribbon cables from the rear chassis (indicated in figure on page 75): • Ribbon cable to P10 on the Recharger board, from the Digital board. • Ribbon cable to P11 on the Recharger board, from the Digital board. Welch Allyn...
  • Page 76 The two halves are sealed by rubber O-ring gaskets that are recessed around the perimeter of the rear chassis. If the gaskets become loose, replace them in the perimeter before re-assembling the monitor. 9. Separate the front chassis from the rear chassis (see figure below). Propaq Encore Service Manual...

  • Page 77: Closing The Monitor

    • The rubber O-ring gasket is in place in the rear chassis. • Verify that the P10 and P11 locking clips are secure. 0696-37 2. Torque the six screws securing the front chassis to the rear chassis to 6.65in-lbs to 7.35in-lbs (.75N-m to .83N-m). Welch Allyn...

  • Page 78: Replacing The Analog Board

    Replacing the Analog Board Section 5-Repair Procedures Replacing the Analog Board If a problem occurs with the Analog board, return the entire monitor to Welch Allyn for service. See Section 1 for information on Technical Service. Note Do not remove the PROM from the Analog board.
  • Page 79 • Blow out any dust and particulates from the board using pressurized de-ionized gas before installing it. • Align the board so that P4 correctly plugs into J4. • Torque the screws holding the Analog board to 3.8in-lbs to 4.2in-lbs (.43N-m to .47N-m). Welch Allyn...

  • Page 80: Replacing The Digital Board

    Replacing the Digital Board Section 5-Repair Procedures Replacing the Digital Board If a problem occurs with the Digital board, return the entire monitor to Welch Allyn for service. See Section 1 for information on Technical Service. Note Do not remove the PROM from the Digital board.
  • Page 81 Digital board before placing the board in the front chassis (see figure on page 82). • Remove the shield on the top of the Digital board in order to reconnect the display cable (see figure on page 82). Welch Allyn...
  • Page 82 • Replace the shield, noting the correct screw lengths indicated on the shield. When replacing the insulating shield, make sure the left side of the shield is placed underneath the top surface of the bracket. • Torque all screws and the hex post to 3.8in-lb to 4.0in-lb (.43N-m to .47N-m). Propaq Encore Service Manual...

  • Page 83: Replacing The El Display Module

    Caution Removing the EL display module may damage the electrically-conductive inner surface of the display filter. Welch Allyn recommends leaving the display unit in the front chassis unless you replace the display unit and the front chassis together. The conductive silicone gasket between the display module and display filter may remove the delicate coating from the perimeter of the filter if the gasket peels up as...
  • Page 84 The slight color variation should be continuous around the perimeter under the gasket. If there is a break in this coating, you must replace the front assembly with the display filter. Propaq Encore Service Manual...
  • Page 85 Section 5-Repair Procedures Replacing the EL Display Module OTI Coating Approx. 0.125" 0696-33 Welch Allyn...

  • Page 86: Removing Front Panel Buttons

    5. Grasp the Silastic gray dome and pull the dome off the button post (see figure on page 87). 6. Squeeze the plastic button latches together and then push the button out the front of the panel (see figure on page 87). Propaq Encore Service Manual...
  • Page 87 Section 5-Repair Procedures Removing Front Panel Buttons 0696-34 Note The button dome can be replaced on the post without regard to the orientation of the notch engraved in the dome. Welch Allyn...

  • Page 88: Replacing Recharger Board Fuse (F2)

    1. Remove the battery pack according to the procedures on page 69. 2. Open the monitor according to the procedure on page 73. 3. Remove the Recharger board according to the procedure on page 93. 4. Replace the fuse (F2, location is shown in the figure below). Propaq Encore Service Manual...

  • Page 89: Replacing Air Tubing

    Leave that length of tubing connected to the side panel but disconnect it from the rest of tubing assembly as indicated by the arrow in the figure below, and replace the tubing assembly. Welch Allyn...
  • Page 90 Section 7 for part numbers. See the figure on page 90 for cable locations. When removing a cable, be sure to note the routing. It is important that the new cable is routed in the same manner. 0696-37 Propaq Encore Service Manual...
  • Page 91 Replacing Air Tubing Replacing PROMs Please read the information in Propaq Encore Software on page 63. The PROMs require a special removal tool to replace them. See the Required Tools list on page 64. To prevent damage to the PROM sockets, do not use any other tools.
  • Page 92 6. Remove the O-ring gasket and replace it with a new one, being careful not to nick or otherwise damage the new O-ring. 7. Reassemble the fitting with the knurled nut and C-clip. 8. Press the fitting back onto the cuff hose. Propaq Encore Service Manual...
  • Page 93 3. Disconnect the air tubing attached to the valves and pump at the junction indicated in the figure on on page 93. DISCONNECT PLUMBING AT THIS POINT 4. Disconnect cables P2, P3, P12, and P14 from the Recharger board. Note cable routing for reinstallation. Welch Allyn...
  • Page 94 When installing the Recharger board: • blow out any dust and particulates using pressurized de-ionized gas • move all cables out of the way • torque screws to 3.8in-lbs to 4.2in-lbs (.43N-m to .47N-m) Propaq Encore Service Manual...

  • Page 95: Replacing The Pump

    • Secure the pump to the Recharger board with tie wraps, aligning the fastener ends as shown in the figure below and cutting off the excess. • Plug in the pump cable to connector P7 on the Recharger board. NIBP Pump Correct Position of Tie-wrap Support Bracket 0696-41 Welch Allyn...

  • Page 96: Replacing The Side Panels

    Replacing the Side Panels Section 5-Repair Procedures Replacing the Side Panels The Propaq Encore 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.

  • Page 97: Removing The Left Side Panel

    5. Press the side panel out of the rear chassis. There is an adhesive gasket around the side panel which requires considerable force to separate. Do not pry against components. 6. Remove the tubing attached to the cuff hose connector. You can reuse this tubing when installing the new side panel. Welch Allyn...
  • Page 98 Make sure the side panel completely sets in place (it should be flush with the exterior of the rear chassis). If not properly fitted, the clamp securing the side panel will not seat. 6. Apply slight pressure to seal the side panel in the rear chassis. Propaq Encore Service Manual...
  • Page 99 8. Connect all plumbing and cables. 9. When installing the right side panel, install a new tie wrap to secure the bead to the rear chassis (see figure below). 0696-45 Welch Allyn...
  • Page 100 SpO2 Board Speaker Panel Main Housing Filler Panel SCP Board Printer SpO2 Board Expansion Module Printer Door Assembly Components Front Panel, no SCO2 MSP Board SSP Board Extender Board Front Panel, Stick Board with SCO2 1097-03 Propaq Encore Service Manual...

  • Page 101: Opening Expansion Module Rear Panel

    3. Separate the rear panel from the chassis a few inches (keep any side panels with the rear), then disconnect the expansion cable connector and the printer cable connector from the circuit board (SCP or MSP board) in the rear panel. 4. Remove the rear panel with the side panels in place. Welch Allyn...

  • Page 102: Closing Expansion Module

    The chassis may crack if screws are tightened without the spacers in place. Note that the 5 upper spacers are not used when the SpO module is present. 5. Torque screws to 4.75 in-lb to 5.25 in-lb (.54 N-m to .59 N-m). Propaq Encore Service Manual...

  • Page 103: Replacing Expansion Module Front Panel

    A rubber O-ring gasket seals the front panel to the chassis. This gasket should be saved for re-installing on the front panel. When installing the expansion module front panel: • Verify the O-ring gasket is in place and not pinched. • Torque screws to 6.65in-lbs to 7.35in-lbs (.75N-m to .83N-m) Welch Allyn...

  • Page 104: Replacing Expansion Module Button Board And Buttons

    When installing the button board, • make sure all buttons are completely installed • make sure the rubber button contact is seated onto the channel • torque screws to 4.75in-lbs to 5.2 in-lbs (.54N-m to .59N-m). Propaq Encore Service Manual...

  • Page 105: Removing Printer

    9. Carefully slide the printer assembly out the front of the chassis. The printer assembly fits snugly, requiring some force to slide it out, and the door latch mechanism must be rotated counter-clockwise after it disengages from the printer door pin. See the figure on page 106. Welch Allyn...

  • Page 106: Installing Printer

    3. Slide the printer assembly into the guides as shown on page 107, making sure that after the door latch mechanism clears the chassis you rotate it clockwise to engage the printer door pin. See the figure above. Propaq Encore Service Manual...
  • Page 107 (Dress tight against plastic) Printer Cable Battery Cable 0696-51 6. Connect the button cable to the front of the Printer Main board. 7. Install the Expansion Module front panel, close the Expansion Module, and reattach it to the monitor. Welch Allyn...

  • Page 108: Opening The Spo 2 Module

    3. Once the tabs allow the rear panel to be removed, separate the rear panel from the chassis. The rear panel is sealed to the chassis with rubber O-ring gaskets. These gaskets can be reused when re-assembling the SpO module. Propaq Encore Service Manual...
  • Page 109 Chassis SCP Board SpO2 Board Speaker Rear Panel 0696-53 O-Ring Cord Release Tab (2) When closing the SpO module, verify no O-ring gasket slips out of its channel and becomes pinched between the rear panel and the chassis. Welch Allyn...

  • Page 110: Replacing The Spo2 Circuit Boards

    • Set the two circuit boards and side panels in place, making sure that the boards are seated on the support tabs. • Torque screws to 4.75in-lbs to 5.25in-lbs (.54N-m to .59N-m). • Reconnect the printer and expansion cables to the SCP board. Propaq Encore Service Manual...

  • Page 111: Replacing The Msp/Spo 2 Circuit Boards

    Connector J5 Speaker Cable 3. Disconnect the speaker cable from the MSP board and remove the speaker side panel. 4. Remove the three screws securing the MSP board and SpO board to the rear panel (see the figure above). Welch Allyn...

  • Page 112: Replacing The Sidestream Co2 Assemblies

    MSP board. 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. Propaq Encore Service Manual...
  • Page 113 Disconnect the water trap switch connector from J4. 4. Lift the SSP/Stick assembly up and out of the front chassis plastic, clearing all board components from the retaining tabs on the insides of the front chassis plastic as the assembly is removed. Welch Allyn...
  • Page 114 • fit front panel to the main expansion module chassis • secure front panel with four screws (torque to 3.5 in/lbs.) Warning To ensure that all tubing is properly connected after servicing SCO , perform the sidestream functional test in Section 2 when complete. Propaq Encore Service Manual...

  • Page 115: Replacing Expansion Module Side Panels

    Circuit Boards earlier. If the speaker side panel is being replaced, separate the chassis and rear panel as described earlier in this section, disconnect the speaker from the SCP or MSP board, and slide out the speaker side panel. Welch Allyn...
  • Page 116 Replacing Expansion Module Side Panels Section 5-Repair Procedures Propaq Encore Service Manual...

  • Page 117: Technical Overview System Description

    The main functional modules (e.g. Analog Board, Recharger Board, Printer, SCP Board, etc.) reside in the housings. The figures on the following pages illustrate the location of the main functional modules in the Propaq Encore monitoring system housings. The Encore monitor electronics reside on three circuit boards within the monitor housing (front and rear chassis).
  • Page 118 Left Side Rear Panel Chassis Monitor Monitor Front Chassis Rear Chassis Assembly Assembly 1097-14 Rear Panel SpO 2 Connector SCP Board SpO 2 Board SpO 2 Speaker Front Panel SpO 2 -Only Module Option 210 1097-15 Propaq Encore Service Manual...
  • Page 119 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 printer SpO 2 Printer Door Front Panel, 1097-05 no SCO 2 Welch Allyn...
  • Page 120 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 Propaq Encore Service Manual...
  • Page 121 SpO 2 Connector Panel Rear Panel SpO 2 Board Speaker Panel Main Housing MSP Board Printer Expansion Module SSP Board Printer Door Option 227 printer Extender Board SpO 2 SCO 2 Front Panel, Stick Board 1097-09 with SCO 2 Welch Allyn...
  • Page 122 SpO 2 Board Speaker Panel 03 Main Housing MSP Board Printer Expansion Module SSP Board Option 229 Printer Door printer SpO 2 Extender Board MCO 2 SCO 2 Front Panel, Stick Board 1097-11 with SCO 2 hardware layout Propaq Encore Service Manual...
  • Page 123 STICK BOARD BOARD SCO2 ANALOG PRINT- OPTION 226 INPUT STICK HEAD BOARD PRINT- SCO2 OPTION 225 ANALOG HEAD INPUT OPTION 228 (CONFIGURED TOGETHER, OPTIONS OPTION 227 225 AND 228 ARE OPTION 229) EXPANSION MODULE HOUSING, OPTIONS 22X 1097-12 Welch Allyn...

  • Page 124: Power Electronics Description

    An accessory cable is available from Welch Allyn to allow connection of such a power source to the dc power input connector on the monitor’s right side panel. This cable must be used for monitor calibration.
  • Page 125 Section 6-Technical Overview System Description power electronics system ISOLATED SUPPLIES Welch Allyn...

  • Page 126: Monitoring Electronics System Description

    Communications and power delivery across the isolation barrier are achieved using opto-couplers and a transformer rated for medical applications. Microcontrollers (µCs) control patient data processing, alarm monitoring and display. Propaq Encore Service Manual...
  • Page 127 Section 6-Technical Overview System Description monitoring system diagram ISOLATION BARRIER Welch Allyn...

  • Page 128: Nibp Pneumatics Description

    The figures on the following pages illustrate the pressure conditions during a typical NIBP measurement process. pneumatics system diagram TO DAP A-D CONVERTER PRIMARY TRANSDUCER SERVO (LINEAR) CUFF VALVE (N.C.) BLEED DUMP VALVE VALVE (N.O.) PUMP (N.O.) SECONDARY TRANSDUCER TO DCP A-D CONVERTER 0696-61 Propaq Encore Service Manual...
  • Page 129 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) Welch Allyn...
  • Page 130 TO DAP A-D CONVERTER PRIMARY TRANSDUCER CUFF SERVO (LINEAR) VALVE PARTIALLY OPEN BLEED DUMP VALVE PUMP VALVE CLOSED CLOSED SECONDARY TRANSDUCER TO DCP A-D CONVERTER ATMOSPHERIC PRESSURE INCREASING PRESSURE (INFLATION) 0696-63 DECREASING PRESSURE (DEFLATION) PRESSURIZED (TARGET REACHED) Propaq Encore Service Manual...
  • Page 131 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) PRESSURIZED (TARGET REACHED) Welch Allyn...
  • Page 132 TO DAP A-D CONVERTER PRIMARY TRANSDUCER CUFF SERVO (LINEAR) VALVE PARTIALLY OPEN BLEED DUMP VALVE PUMP VALVE OPEN CLOSED SECONDARY TRANSDUCER TO DCP A-D CONVERTER ATMOSPHERIC PRESSURE 0696-65 INCREASING PRESSURE (INFLATION) DECREASING PRESSURE (DEFLATION) PRESSURIZED (TARGET REACHED) Propaq Encore Service Manual...

  • Page 133: Cabling Diagrams

    DECREASING PRESSURE (DEFLATION) BEGINS BY DUMP VALVE. THIS CHECKS INTEGRITY OF DUMP VALVE'S ABILITY TO PRESSURIZED (TARGET REACHED) OPEN. 0696-66 Cabling Diagrams The figure on on page 134 shows the system cabling and routing for the monitoring system. Welch Allyn...
  • Page 134 Cabling Diagrams Section 6-Technical Overview cabling diag Propaq Encore Service Manual...

  • Page 135: Expansion Module And Printer Description

    The Expansion Module is designed to house the Propaq Encore Printer and other circuit boards for additional parameters. The main circuit board in the Printer is the Printer Main Board. An additional circuit board (key panel) in the expansion module with printer front chassis contains the push buttons.
  • Page 136 P150 FROM MOTOR PRINTER PWR (0..9) PRINTER BATTERY POWER P501 DRIVER PAPER OUT DET. P402 HEAD UP SYSTEM DET. PRINTER POWER P400 EXPANSION KEY BOARD P140 FROM/TO PROPAQ PRINT PRINTER HEAD (0..8) HEAD LOGIC EXPANSION 0696-72 Propaq Encore Service Manual...

  • Page 137: Pulse Oximetry Option (Spo2) Description

    LED. Because the photo diode is sensitive to light emitted from sources other than the LEDs (ambient light), an ambient light component is subtracted from the signal during the processing of the SpO data. Welch Allyn...
  • Page 138 The data from the ADC is processed by the CPU and then sent to the SCP board for transmission to the Propaq Encore monitor's CPU. signal level is controlled through the variable gain stage of the inverting amplifier and the output current of the LED current driver.
  • Page 139 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 TO SCP BOARD CONTROL DRIVERS LEDS 0696-73 Welch Allyn...

  • Page 140: Capnography (Co2) Description

    The Main Stream Processor circuit board (MSP board) is the major interface connection between several subsystems in the Expansion Module. This circuit board connects directly to the expansion connector, providing a direct interface to a Propaq Encore Display Processor system. The MSP board also supports: •...

  • Page 141: Mainstream Board

    Non-Isolated Circuitry. The Non-Isolated circuitry on the MSP board interfaces with the Propaq Encore, the printer, the speaker, P6 and P7 expansion connectors, and with the Main Stream Processor which resides on the isolated section of the MSP board. Isolated Circuitry.

  • Page 142: Ipc Expansion

    Section 6-Technical Overview IPC Expansion The Inter-processor Communications (IPC) bus, originating in the Propaq Encore, is passed to the MSP board from the expansion connector. The two-wire bus is expanded to the printer and to the Main Stream Processor via opto-couplers.

  • Page 143: Field Replaceable Units (Frus) List Of Frus

    List of FRUs Section 7 Field Replaceable Units (FRUs) List of FRUs The following list identifies the available FRUs for the Propaq Encore. To order an FRU, contact Welch Allyn Technical Support as described in Section 1. REPLACEMENT PART DESCRIPTION PART NO.
  • Page 144 MAIN CHASSIS, EM WITH PRINTER, ESD 020-0600-00 MAIN CHASSIS, EM W/O PRINTER, ESD 020-0599-00 FRONT PANEL 020-0515-00 REAR PANEL 020-0071-00 PAPER DOOR 020-0074-00 CAP, HORIZONTAL KEY 630-0087-00 KEY PAD, ELASTOMERIC 630-0086-00 FUSE, 15A PICO, 125 VOLT, ONE EACH 503-0019-00 Propaq Encore Service Manual...
  • Page 145 MSP BOARD, W/O MCO2, MS3 / MP-203 / MP-405, U1 128K PROM, D/G 031-0058-52 SERIES ONLY OPTION MAINSTREAM CONNECTOR PANEL, CO2, W/O BRACKET 020-0582-00 MAINSTREAM CO2 SENSOR EXCHANGE 108-0502-00 MAINSTREAM CO2 SENSOR TRADE-IN 008-0502-00 OPTION SIDESTREAM SSP BOARD 020-0574-00 STICK BOARD 031-0094-02 EXTENDER BOARD 031-0092-00 Welch Allyn...
  • Page 146 LABEL, LEFT SIDE PANEL, 2X6/RESP., HP, UNIVERSAL 640-0351-01 LABEL, SPO2 CONNECTOR PANEL 640-0443-00 LABEL, BATTERY COVER 640-0031-01 LABEL, SCO2 ONLY 640-0331-07 LABEL, EMP REAR PANEL 640-0385-05 LABEL, CONNECTOR PANEL, CO2 640-0314-00 LABEL, EMP, PRINTER DOOR PANEL 640-0322-01 Propaq Encore Service Manual...
  • Page 147 LABEL, PRINTER KEY PANEL 640-0450-00 LABELS, PORTUGUESE APPLICATIONS LABEL, PRINTER KEY PANEL 640-0462-00 LABELS, SPANISH APPLICATIONS LABEL, PRINTER KEY PANEL 640-0371-00 LABELS, SWEDISH APPLICATIONS LABEL, PRINTER KEY PANEL 640-0465-00 SPECIAL SERVICE TOOLS NIBP CALIBRATION SETUP TUBING ADAPTER KIT 008-0012-01 Welch Allyn...
  • Page 148 List of FRUs Section 7-Field Replaceable Units (FRUs) Propaq Encore Service Manual...

  • Page 149: Manufacturable Test Equipment Introduction

    39 Ω 4.9 OHM AND 4.65 OHM LOADS .2 Ω 20 Ω .2 Ω 5 Ω CONNECTOR: 5-PIN, 0.156" CENTER MFR: METHODE; PN 3300-405-220 WELCH ALLYN PN 610-0036-00 PROTOCOL PN: 610-0036-00 (REQUIRES INSERTION TOOL METHODE PN JT-11-156-ST) 0696-71 Welch Allyn...
  • Page 150 Introduction Appendix A-Manufacturable Test Equipment Propaq Encore Service Manual...

  • Page 151: Appendix B Dynatech/Nevada Patient Simulator Modification

    ECG and invasive pressure simulator channels are simultaneously connected to the monitor. Erroneous readings result. The patient simulator must be modified as described in this appendix in order to use both simulator channels with the Propaq Encore monitors with IBP. If only one simulator channel is used, the modification is unnecessary.
  • Page 152 Remove jumpers W1 and W2 from the patient simulator's Top PCB. 810-0696-57 Incompatibilities with other simulators may also cause erroneous readings and/or missing ECG. Check Propaq Encore readings with the simulator against a known source before using the simulator for calibration. Function Color Pin No.

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