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Propaq® EncoreVital Signs MonitorService Manual

6 Overview Welch Allyn Propaq Encore Vital Signs MonitorWarranty ServiceDO NOT ATTEMPT TO REPAIR the Encore monitor yourself during the warranty perio

96 Technical Overview Welch Allyn Propaq Encore Vital Signs Monitor1097-06Expansion ModuleOption 224SpO2MCO2Main HousingFront Panel, no SCO2SpO2 Conne

Service Manual Technical Overview 971097-08Expansion ModuleOption 226SpO2SCO2 SpO2 Connector Panel Rear Panel Speaker Panel MSP Board SpO2 Boar

98 Technical Overview Welch Allyn Propaq Encore Vital Signs Monitor1097-10Expansion ModuleOption 228SpO2MCO2SCO2 SpO2 Connector Panel Rear Panel

Service Manual Technical Overview 99monitor systemEXTENDERBOARDmeans optional configurationSPO2 BOARDSCP BOARDSPO2 ANALOG INPUTSPO2 ANALOG INPUTSPO2 A

100 Technical Overview Welch Allyn Propaq Encore Vital Signs MonitorPower ElectronicsThe power system circuits are located on the Analog, Digital, and

Service Manual Technical Overview 101EL DISPLAYPOWER SUPPLYBATTERYRECHARGERSUPPLYBATTERYMONITORPOWERCONTROLDISPLAYPOWERCONTROLPOWERADAPTER+BAT-BATVCHG

102 Technical Overview Welch Allyn Propaq Encore Vital Signs MonitorMonitoring Electronics SystemThe monitoring electronics reside on the Analog and D

Service Manual Technical Overview 103NIBP PneumaticsThe NIBP (cuff) system:• inflates the cuff to a target cuff pressure• converts the cuff air pressu

104 Technical Overview Welch Allyn Propaq Encore Vital Signs MonitorCUFFPRIMARYTRANSDUCERSECONDARYTRANSDUCERDUMPVALVEOPENSERVO(LINEAR)VALVECLOSEDBLEED

Service Manual Technical Overview 105CUFFPRIMARYTRANSDUCERSECONDARYTRANSDUCERDUMPVALVECLOSEDSERVO(LINEAR)VALVECLOSEDBLEEDVALVEOPENPUMPOFFATMOSPHERIC P

Service Manual Overview 7Identifying Propaq Encore ConfigurationsThe following table identifies Propaq monitor configurations and how they are indicat

106 Technical Overview Welch Allyn Propaq Encore Vital Signs MonitorCUFFPRIMARYTRANSDUCERSECONDARYTRANSDUCERDUMPVALVEOPENSERVO(LINEAR)VALVECLOSED*BLEE

Service Manual Technical Overview 107Cabling Diagramscabling diag

108 Technical Overview Welch Allyn Propaq Encore Vital Signs MonitorExpansion Module and PrinterThe printer shares battery power with the monitor, but

Service Manual Technical Overview 109PRINTERPOWERSYSTEMPOWERPRINTHEADPRINTERDRIVERPRINTERCPUPRINTERLOGICP150FROMBATTERYP1EXPANSIONVCCTOMOTORTOPAPER OU

110 Technical Overview Welch Allyn Propaq Encore Vital Signs MonitorPulse Oximetry (SpO2) OptionThe monitor pulse oximetry option (SpO2) hardware incl

Service Manual Technical Overview 111The SpO2 board consists of the following subsystems:• internal preamplifier and switch• ac-coupled amplifier• inv

112 Technical Overview Welch Allyn Propaq Encore Vital Signs Monitorcan then be digitized. The data from the ADC is processed by the CPU and then sent

Service Manual Technical Overview 113Capnography (CO2)Two capnography (CO2) monitoring options are available—the mainstream -sampling CO2 option (MCO2

114 Technical Overview Welch Allyn Propaq Encore Vital Signs MonitorIsolated Circuitry. The Isolated Circuitry directly controls the hardware responsi

Service Manual Technical Overview 115applications, a sample of exhaled gases is obtained through a small-diameter sampling tube and routed to the benc

8 Overview Welch Allyn Propaq Encore Vital Signs MonitorTable 2. Expansion Module Option ConfigurationsOption NumberPrinter Mainstream CO2Sidestream

116 Technical Overview Welch Allyn Propaq Encore Vital Signs Monitor

8117Field Replaceable Units (FRUs)This identifies the available FRUs for the Propaq Encore. To order an FRU, contact Welch Allyn Technical Support as

118 Field Replaceable Units (FRUs) Welch Allyn Propaq Encore Vital Signs MonitorVALVE, BLEED/DUMP (VLV1, VLV2) 680-0050-00VALVE, LINEAR SERVO (VLV3) 6

Service Manual Field Replaceable Units (FRUs) 119SPO2 CONNECTOR PANEL, NELLCOR MP-405 010-0210-02SPO2 CONNECTOR PANEL, NELLCOR MP-507 010-0231-00SPO2

120 Field Replaceable Units (FRUs) Welch Allyn Propaq Encore Vital Signs MonitorLABEL, LEFT SIDE PANEL, 2X2/RESP., AAMI, UNIVERSAL 640-0329-01LABEL, L

Service Manual Field Replaceable Units (FRUs) 121LABEL, LEFT AND RIGHT KEYS WITH ALARM LEDS 640-0479-01LABEL, LEFT AND RIGHT KEYS, NET OFF 640-0484-00

122 Field Replaceable Units (FRUs) Welch Allyn Propaq Encore Vital Signs Monitor

A123Manufacturable Test EquipmentThe following device(s) can be manufactured for use in the functional verification and calibration procedures in this

124 Manufacturable Test Equipment Welch Allyn Propaq Encore Vital Signs Monitor

B125Dynatech/Nevada Patient Simulator ModificationThe factory configuration of the Dynatech/Nevada model 214A, 215A, and 217A Patient Simulators is in

Service Manual Overview 9Self Test and Service MenusThe Encore monitor includes built-in self-tests that verify the integrity of its hardware and soft

126 Dynatech/Nevada Patient Simulator Modification Welch Allyn Propaq Encore Vital Signs Monitor

10 Overview Welch Allyn Propaq Encore Vital Signs Monitor

311Functional VerificationIntroductionThe functional verification procedures ensure proper operation of the Encore monitor and its options. These proc

12 Functional Verification Welch Allyn Propaq Encore Vital Signs MonitorRequired EquipmentYou will need the following equipment to verify that all fun

Service Manual Functional Verification 13Risk (Leakage) Current TestA risk (leakage) current test must be performed to verify that the patient remains

14 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor2. Connect the high-voltage output lead of the tester to all ECG leads, using

Service Manual Functional Verification 154. Turn on the power adapter’s power switch.5. Check that the green LED on the power adapter turns on and tha

ii Welch Allyn Propaq Encore Vital Signs Monitor© 2011 Welch Allyn. All rights are reserved. To support the intended use of the product described in t

16 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor13. Vary the power supply from 12 V to 28 V and verify that the charging LED s

Service Manual Functional Verification 17Sequence for All Other Software Versions 1. Press ECG/RESP > MORE. Then press CHANGE to select the four HR

18 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor4. Set the patient simulator as follows:• ECG Waveform: normal sinus rhythm• E

Service Manual Functional Verification 198. Check that an equipment alarm occurs. The EQUIPMENT ALERT / MULTIPLE message should accurately indicate th

20 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor27. Check that the ALARM light is OFF.28. Press MAIN MENU.Part 2— Electrical C

Service Manual Functional Verification 2111. Disconnect the scope probe and ground clip and remove the wires from the connectors.12. Using either a Li

22 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor10. After allowing a few seconds for settling, check that the mean pressure re

Service Manual Functional Verification 238. Reduce the pressure to 0 mmHg and check that the displayed readings (PR1 and PR2) are 0 ± 2 mmHg. 9. Close

24 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor• Compatible adult SpO2 sensor for finger.• BIO-TEK Index 2 Series SpO2 Simula

Service Manual Functional Verification 25Sensor CompatibilitySome sensors are not compatible with the particular Nellcor processing board installed in

iiiContents1 - Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Warnings. . . . . . . . . . . . . . .

26 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor15. Press the START/STOP button.16. After the printer runs out of paper, check

Service Manual Functional Verification 27Local Barometric Pressure =0.033421 x LUP x ATIS (ATIS in inches of Hg)0.00131579 x LUP x ATIS (ATIS in mm of

28 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor-600 776.62 2400 696.36 6800 590.90 14667 434.68-500 773.83 2500 693

Service Manual Functional Verification 29Mainstream CO2 Verification ProcedureThis procedure verifies the accuracy of the Encore’s mainstream CO2 (MCO

30 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor12. Disconnect the CO2 sensor from the monitor.13. Turn off the monitor.14. Lo

Service Manual Functional Verification 316. Verify that BARO TRUE and INT are within 15mmHg (5mmHg, typical) of the barometric pressure determined in

32 Functional Verification Welch Allyn Propaq Encore Vital Signs Monitor15. Use the pump bulb to manually inflate the pressure to 100mmHg.16. Wait 15

433CalibrationIntroductionThis section provides calibration procedures for the Propaq Encore. These procedures allow you to calibrate the Encore to We

34 Calibration Welch Allyn Propaq Encore Vital Signs MonitorProceduresThis section contains procedures for calibrating the Propaq Encore monitor:• Rec

Service Manual Calibration 35Recharger Supply Adjustments1. Verify that the Encore power switch is off. 2. Disconnect the battery connector from P12 o

iv Contents Welch Allyn Propaq CS Vital Signs Monitor6 - Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36 Calibration Welch Allyn Propaq Encore Vital Signs Monitor7. Connect the adapter cable to the monitor’s dc input jack.8. Verify that the input curre

Service Manual Calibration 37Display Voltage AdjustmentsThe following calibration adjusts the monitor display’s high voltage supply which is located o

38 Calibration Welch Allyn Propaq Encore Vital Signs Monitor5. Reposition the tube to view the brightest area (now dim) and simultaneously a lighted a

Service Manual Calibration 398. Disconnect the DMM leads.Calibrating Realtime ECG Out1. Connect the 5-lead ECG cable to the monitor and the simulator.

40 Calibration Welch Allyn Propaq Encore Vital Signs MonitorNon-Invasive Blood Pressure Calibration1. Connect the cuff, digital pressure meter, bulb,

Service Manual Calibration 4111. Connect the oscilloscope reference lead to TP43 or TP1 on the Analog board.12. Check for  15mV peak-to-peak noise.13

42 Calibration Welch Allyn Propaq Encore Vital Signs Monitor9. Set the simulator to 200mmHg.10. Check that P2 displays 200mmHg ±2 mmHg.11. Disconnect

543TroubleshootingIntroductionThis section provides information that can be helpful in troubleshooting the Propaq Encore monitor.Screen MessagesMessag

44 Troubleshooting Welch Allyn Propaq Encore Vital Signs MonitorLACK OF WAVEFORM, SENSOR DISABLED - (MCO2). The airway adapter (cuvette) may be contam

Service Manual Troubleshooting 45Battery Capacity CheckSeveral variables affect monitor operating time on battery:• active options• frequency of NIBP

11Safety SummaryWarningsThis Safety Summary should be read by all Propaq CS monitor users. Specific warnings and cautions are placed throughout the do

46 Troubleshooting Welch Allyn Propaq Encore Vital Signs Monitor

647Repair ProceduresIntroductionThis section provides instructions for removing and replacing serviceable modules in the:• Propaq Encore monitor• expa

48 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorRequired ToolsThe following tools are required to disassemble and reassemble the Pro

Service Manual Repair Procedures 49Field Replaceable Units in the MonitorThe front chassis of the monitor contains the following components:• insulato

50 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorThe rear chassis contains the following components:• Recharger board• Side panels (r

Service Manual Repair Procedures 51Replacing the Power Input FuseThe F1 fuse protects the Recharger board circuitry against excessive current at the d

52 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorTo remove the fuse, use a flat blade screwdriver to turn the fuse cover and release

Service Manual Repair Procedures 53single battery cover removal2. Disconnect the battery pack cable from the battery pack.3. Remove the battery pack f

54 Repair Procedures Welch Allyn Propaq Encore Vital Signs Monitor2. Use the flat blade screwdriver to gently loosen the expansion module from the mon

Service Manual Repair Procedures 557. Remove the dual battery pack from the expansion module.8. Store the battery in a safe place while disassembling

2 Safety Summary Welch Allyn Propaq Encore Vital Signs MonitorWARNING To ensure patient safety, the conductive parts of the ECG electrodes (includin

56 Repair Procedures Welch Allyn Propaq Encore Vital Signs Monitor3. Slightly spread the casing open at the top until you can disconnect the pressure

Service Manual Repair Procedures 573. Spread the casing open to an angle of about 80 degrees.4. Detach the following cables from the front chassis (in

58 Repair Procedures Welch Allyn Propaq Encore Vital Signs Monitor1. Detach the two ribbon cables from the rear chassis:• Ribbon cable to P10 on the R

Service Manual Repair Procedures 59Closing the Monitor1. Before closing the monitor casing, verify the following:• Cable to P6 on the Analog board goe

60 Repair Procedures Welch Allyn Propaq Encore Vital Signs Monitor1. Remove the battery pack (“Replacing the Battery Pack” on page 52).2. Open the mon

Service Manual Repair Procedures 61When installing the Analog board:• Blow out any dust and particulates from the board using pressurized de-ionized g

62 Repair Procedures Welch Allyn Propaq Encore Vital Signs Monitor5. Use the nut driver to loosen and remove the hex post.6. Lift the Digital board up

Service Manual Repair Procedures 63When installing the Digital board:• Make sure the cable between the Digital board and the Recharger board is instal

64 Repair Procedures Welch Allyn Propaq Encore Vital Signs Monitor• Replace the shield, noting the correct screw lengths indicated on the shield. When

Service Manual Repair Procedures 656. To carefully remove the display:a. Using a flat blade screwdriver, each person should hold the silicone gasket d

Service Manual Safety Summary 3DefinitionsSymbolsThe following symbols appear in the monitor documentation and on monitor labels. These internationall

66 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorWhen installing the display module:• Remove any dust from the display filter using p

Service Manual Repair Procedures 674. Remove the Digital board (“Replacing the Digital Board” on page 61).5. Grasp the Silastic gray dome and pull th

68 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorReplacing Air TubingReplace the NIBP tubing as a single assembly to ensure accurate

Service Manual Repair Procedures 69Replacing CablesIf you suspect a cable to be faulty, check its continuity on all pins. If you need to replace a cab

70 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorReplacing PROMsRead “Propaq Encore Software” on page 47. The PROMs require a special

Service Manual Repair Procedures 71Cuff FittingsAir system integrity in the NIBP system is essential for accurate measurements. Routine wear of the O-

72 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorReplacing the Recharger BoardThe Recharger board is secured to the rear chassis by f

Service Manual Repair Procedures 736. Lift out the Recharger board.When installing the Recharger board:• blow out any dust and particulates using pres

74 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorReplacing the PumpNew wires and a connector are provided with the replacement pump k

Service Manual Repair Procedures 75Replacing the Side PanelsThe Propaq Encore side panels are complete assemblies.The side panels are sealed to the re

4 Safety Summary Welch Allyn Propaq Encore Vital Signs MonitorThe CE mark and notified body registration number signify Propaq CS Series monitors have

76 Repair Procedures Welch Allyn Propaq Encore Vital Signs Monitor5. Press the side panel out of the rear chassis. There is an adhesive gasket around

Service Manual Repair Procedures 774. On the new side panel, remove the protective paper from the gasket attached to the side panel.5. Set the side pa

78 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorExpansion ModuleThe expansion module housing contains one or all of the following:•

Service Manual Repair Procedures 79Opening the Expansion Module Rear Panel1. Separate the monitor and expansion module (“Removing the Dual Battery in

80 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorClosing the Expansion Module1. Make sure all cables are in place and the gaskets rem

Service Manual Repair Procedures 81Replacing the Expansion Module Front PanelThe front panel contains the printer buttons. Like the rear panel, the fr

82 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorReplacing the Expansion Module Button Board and ButtonsThe expansion module contains

Service Manual Repair Procedures 83Replacing the PrinterThis section provides instructions on removing and installing the printer mechanism and printe

84 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorInstalling the Printer1. Lay the chassis on its back2. Completely open the paper doo

Service Manual Repair Procedures 85Opening the SpO2 Module1. Separate the SpO2 module from the monitor (“Removing the Dual Battery in SpO2 Module” on

25OverviewPurpose and ScopeThe Propaq Encore Service Manual is intended as a reference for monitor maintenance and repair to the field replaceable uni

86 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorReplacing the SpO2 Circuit BoardsThis describes how to replace the two SpO2 circuit

Service Manual Repair Procedures 87Replacing the MSP/SpO2 Circuit BoardsThis describes how to replace the MSP/SpO2 circuit boards in the expansion mod

88 Repair Procedures Welch Allyn Propaq Encore Vital Signs Monitor• set the two circuit boards and side panels in place, making sure that the boards a

Service Manual Repair Procedures 89Removing the SSP/Stick board assembly:1. Remove the two screws located on the right edge of the SSP board (as viewe

90 Repair Procedures Welch Allyn Propaq Encore Vital Signs MonitorRemoving the Stick board from the SSP board:1. Disconnect the tubing from the pump a

Service Manual Repair Procedures 91Replacing Expansion Module Side PanelsThe side panels easily slide out after the chassis and rear panel are separat

92 Repair Procedures Welch Allyn Propaq Encore Vital Signs Monitor

793Technical OverviewThis section describes the electronics of the Encore monitor and three of its options: Printer, Pulse Oximetry (SpO2), and Capnog

94 Technical Overview Welch Allyn Propaq Encore Vital Signs MonitorSystem DescriptionThe Encore monitor can be configured as a standalone monitor or w

Service Manual Technical Overview 951097-04Expansion ModuleOption 221printerFiller PanelPrinterMain HousingPrinter DoorFiller PanelRear PanelFront Pan