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Service Manual, Propaq LT Vital Signs Monitor

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1. 7 Isolation between the monitor Isolated and the cradle power input 8d Isolation between the monitor Isolated and the USB port Battery run time new battery optional Light load 24 hours Heavy load 8 hours 70 Functional verification Welch Allyn Propaq LT Vital Signs Monitor 21 Replacement parts This list includes field replaceable service parts only Product accessories are listed separately at www welchallyn com Order Number Description Top chassis 020 0647 XX Top Panel Assembly includes buttons window panel overlay 020 0631 XX Service Kit Display Color LCD OVGA with extender flex 630 0223 XX Gasket Display 2 each 600 0506 XX Bracket Display 660 0227 XX Cable Assembly LCD Extender Flex 660 0257 XX Speaker Assembly with Cable 600 0554 XX Gasket Speaker Bottom chassis 020 0649 XX Connector Panel ECG Sp02 NIBP 020 0623 XX Bottom Case Assembly with Power Switch Connector Panel and Power Flex 640 0628 XX Label Rear Panel 640 0647 XX Label Icon Descriptions 630 0241 XX Insert Screw Cover Bottom Case 630 0243 XX Insert Rectangular Bottom Case 660 0218 XX Connector Assembly Power USB Flex 680 0074 XX Pump NIBP without wires 620 0403 XX Cable Tie 2 per pump 020 0625 XX Tubing Kit 3 Tubing Sections with fittings and check valve 020 0624 XX Valve Assembly Including Pump Wires 600 0396 XX Check Valve 600 0500 XX Filter 630 0224 XX Cap
2. Calibrating Minimize motion A transient pressure pulse was introduced into the cuff via sudden and excessive patient motion An NIBP measurement was attempted within 45 seconds of monitor power up Restart the monitor Wait 45 seconds after turning on the monitor before starting an NIBP measurement An NIBP measurement was attempted while the NIBP system was performing a baseline calibration Excessive cuff artifact Wait 15 seconds and retry the NIBP measurement Reduce patient motion Equipment Alert NIBP Fault Service required NIBP disabled The NIBP system self test has failed 3 times without passing Excessive artifact Minimize patient motion NIBP subsystem failure Send the monitor to an authorized Welch Allyn Service Center for service See Returning products on page 6 Troubleshooting and repair Radio Welch Allyn Propaq LT Vital Signs Monitor Radio equipped Propaq LT monitors support wireless connection to one of the two types of Acuity networks Model 802LTRN 802LTRS 802LTAN 802LTAS 802LTON 802LTOS Wireless connection 802 11 FHSS Acuity network 802 11a Acuity network none In facilities with 802 11a networks administrators can reconfigure the radio the Acuity network or both to meet local security or policy requirements When you send a model 802LTAN or 802LTAS monitor to Welch Allyn for service the radio is reset to the fa
3. A Caution The clips are fragile Excessive bending will break them screwdriver tip clip detail REASSEMBLY 46 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor Remove all adhesive tape from the ferrite beads and remove all pieces of the adhesive gasket Use all new adhesive tape on the ferrite beads and a new adhesive gasket on the connector assembly Removing the power USB flex connector from the bottom chassis 1 Removing the lithium ion battery assembly on page 29 2 Separating the top and bottom chassis halves on page 31 3 Removing the main board from the bottom chassis assembly on page 36 4 Remove the two hex nuts from the rear of the flex connector 5 Remove the connector guide posts from the connector well A Caution Use extra care during this procedure to protect all components of the flex circuit Note The hex nuts and the connector guide posts cannot be reused after removal The hex nuts are secured with Loctite adhesive Removing the nuts damages them and damages the guide posts 6 Remove the Power USB flex connector assembly REASSEMBLY 1 Install the washers onto the new connector guide posts 2 Seat the guide posts inside the connector well noting the proper alignment of the flat side of the quide posts 3 Install the flex connector assembly 4 Add threadlocker to the screws and tighten the hex nuts enough to slightly com
4. When the display module has been replaced you must then set the LCD bias Note Perform this test only under fluorescent lighting 1 On the monitor navigate to the Bias screen HR min Setup Service Display w Bias ID SET_D80GH2FK Y 20 43 54 Adult Rm Service NIBP ECG SpO2 USB Radio Software Battery Voltages Buttons Display Pixel Test Fonts Display Bias ISA 4 Use left 4 or right gt to increase decrease bias Use the controls indicated to set the bias Bias is optimized when the visible shimmer in the test pattern is reduced to the minimum level Check radio status The Radio Status screens provide information that might be required if you have to troubleshoot the Acuity system network 24 Troubleshooting and repair Welch Allyn Propaq LT Vital Signs Monitor 25 Disassembly and reassembly Procedures overview This describes all disassembly steps required for module level and board level service procedures Disassembly is presented here as a sequence of procedures Do not perform any unnecessary procedures Example Remove the air filter assembly and replace the air filter only if it appears that the filter is clogged and is restricting air flow to the pump Example Disconnect and remove the NIBP pump only if you are going to replace the pump or the NIBP air valve assembly A Caution Perform all repair procedures at a static protected station Caution Regard all monitor parts as extremely fr
5. on page Functional verifica Removing the lithi assembly on page Functional verifica Functional verifica Troubleshooting a Disassembly and tion on page 55 ilter on page 30 um ion battery 29 tion on page 55 um ion battery 29 tion on page 55 tion on page 55 nd repair on page 11 eassembly on page 25 Functional verifica tion on page 55 Returning products on page 6 8 Overview Welch Allyn Propaq LT Vital Signs Monitor Service options Warranty service All repairs on products under warranty must be performed or approved by Welch Allyn Refer all warranty service to Welch Allyn Factory Service or another authorized Welch Allyn Service Center Obtain an RMA number for all returns to Welch Allyn Factory Service See Returning products on page 6 A Caution Unauthorized repairs will void the product warranty Non warranty service Welch Allyn Beaverton Factory Service and authorized Service Centers support non warranty repairs Contact any Welch Allyn regional service center for pricing and service options Welch Allyn offers modular repair parts for sale to support non warranty service This service must be performed only by qualified end user biomedical clinical engineers using this service manual Service Manual Overview 9 Related documents Title Reorder Number Propaq LT Vital Signs Monitor Directions for Use
6. 19 shipping 4 speaker disassembly 30 removal 33 SpO cable 37 T technical support 3 troubleshooting 9 tubing 37 removal 35 V verification see functional verification W warning term defined 2 warranty 1 washers nylon 46 Z zero insertion force see ZIF ZIF connectors using 25
7. See the Propaq LT Service Manual for the NIBP Characterization Procedure 22 Troubleshooting and repair Welch Allyn Propaq LT Vital Signs Monitor Simultaneously press d and D to access the NIBP characterization service screens A warning message appears NIBP characterization affects neonatal cuff detection Press to continue The first steps of the procedure appear ho ROBER E i Mallee crass Y 12 41 32P Aud ed Service NIBP ECG Sp02 USB Radio Software Display Battery Voltages Buttons NIBP Show Info Pump Test Characterize NIBP 5 Follow the steps as presented on the screen Note The standard neonatal NIBP hose 008 0265 xx can be effectively blocked with firm thumb pressure over the fitting opening Note In this procedure the select button refers to 6 Press to begin characterization When the characterization is complete this screen appears cae al 12 41 32P ed Adult Rm NIBP ECG Sp02 USB Radio Software Display Battery Voltages Buttons NIBP Show Info Pump Test Characterize NIBP THE VERIFICATION TEST ASSURES PROPER NEONATAL CUFF DETECTION Failure to perform the verificati overinflation of neonatal cuff 7 Verify the characterization Characterization test on page 61 WARNING Always verify after characterization Failure to verify a new characterization could result in overinflation of a neonatal cuff Service Manual Troubleshooting and repair 23 Set LCD bias
8. characterize NIBP 19 charger operating states 15 troubleshooting 15 chassis disassembly 29 disassembly top piece 32 connector locations 26 connectors overview 25 controls monitor 6 cradle service chart 18 D disassembly procedures 23 display protecting 32 removing 32 E ECG cable 36 ECG flex cable 36 electrostatic discharge see ESD equipment required functional verification 53 ESD 2 F field replaceable unit 3 functional verification battery run time 63 checklist and report form 65 cradle 54 ECG 56 equipment required 53 NIBP 59 overview 53 radio 61 respiration 57 safety 61 system tests 56 G gasket adhesive 47 large blue 31 H Hi Pot 61 76 Index L LCD bias 21 M main board not user serviceable 3 removing 34 menu service 6 menus service 19 monitor service chart 17 monitor controls 6 N NIBP characterization 19 NIBP tubing 37 NIBP tubing removal 35 nylon washers 46 P photosensor obsolete 51 52 power switch 38 pump removing 40 wiring 41 R radio not user serviceable 3 radio status checking 21 reassembly procedures 23 returning products 4 RMA 4 routing 41 49 S safety 1 general information 1 Screws chart 24 service intervals 5 warranty and non warranty 5 service menu 6 characterize NIBP 19 setting the LCD bias 21 Welch Allyn Propaq LT Vital Signs Monitor service menus
9. 810 1828 XX Controls Monitor Power Turn the monitor power on or off Down Move the cursor down to the next display item Action Act based on what is highlighted Silence Reset Silence the current alarm tone for A 90 seconds or reset a silenced alarm tone 80 Left Move the cursor left to the next display Display Cycle to the next configured display item decrease the parameter value format or cancel the current control setup or pop up menu Right Move the cursor right to the next Snapshot Record a 21 second period of numeric display item increase the parameter value and waveform data Up Move the cursor up to the next display Start Stop NIBP Start or stop an NIBP item le measurement Cradle Monitor Release Press and hold while removing the monitor from the cradle b DO aoe Service menu To access the monitor service menu From any main display screen such as Large Numerics Dual Waveform 1 Highlight lt HR PR SpO2 NIBP Resp or E and then press 9 2 Highlight Setup at the bottom of the screen and press e The setup menu appears HALL ROBERT E 3456187 A 3 00 06P Adult Rm 23 Setup Menu Suspend Audible Alarms On 90sec Alarm Tone Low Med Exit Trends Snapshots Setup 3 Scroll right to highlight Service and press 9 The service menu appears with NIBP and Show Info highlighted 10 Overview STEWART ANN 7762940
10. LED indicators and initializes to a default condition in which the four test parameter indicators are lit closest to their respective selector buttons The default should be 60 bpm and 75 saturation 4 When the monitor display stabilizes verify the following e pulse rate is 60 bpm 3 bpm e saturation is 75 3 5 Switch the simulator to 200 bpm 6 When the monitor display stabilizes which could take as long as 30 seconds verify that the pulse rate is 200 bpm 3 bpm 7 Switch the simulator to 90 saturation 8 When the monitor display stabilizes verify that the saturation is 90 3 9 Disconnect the simulator Testing the Model 802LTxS monitors only 1 Connect the Masimo 1795 SET SpO Tester to the monitor via a Masimo DB9 LNCS cable 4 10 or 14 and a Masimo 1645 MAC 1 adapter cable LNOP to LNCS 2 When the monitor display stabilizes verify the following e Pulse rate from SpO 61 bpm 3 bpm e SpO saturation 81 2 3 Disconnect the simulator Testing the monitor and the sensor 1 Set the Fluke Index2 SpO simulator to Type Masimo or Nellcor 94 Rate 60 motion artifact No 2 Let the simulator warm up for at least 5 minutes 3 Connect a sensor to the optical finger of the simulator and to the monitor 4 When the monitor display stabilizes verify a saturation reading of 94 4 and a pulse rate of 60 bpm 4 bpm Service Manual NIBP Characterization test Leak
11. Y 3 00 06P Adult Rm ICU 263 Setup Alarms ECG NIBP Timings Configurat Exit Trends Snapshots Setup STEWART ANN 7762940 Y ee DOE Adult RmICU2 Service ECG SpO2 USB Radio Software Display Batte Voltages Buttons NIBP NIBP Test Characterize Pump The service menu contains 10 sections Welch Allyn Propaq LT Vital Signs Monitor Service Section Operations Status displays NIBP Test NIBP Characterize Pump ECG Setup Enable Disable HR PR Alarms Sp0 none USB none Radio Monitoring Monitor the radio Set Netname Software none Display Run Pixel Test Set Bias Battery none Voltages none Buttons Test Buttons Sh Pa Sh Sh Sh ow In ramet ow In ow In ow In 0 ers 0 0 o View and Set Netname View Error Log View RAM Dump View System Info View Fonts Show Info Show Info none Troubleshooting and repair 11 Troubleshooting Chart ses aasre dock aed dated ele we ated cede Bee ed Boke ad i e 11 Battery use and Care eee 18 Semice CHAM ia arave manni dd Ae 19 Service menus for repair and network troubleshooting Troubleshooting chart General Caution Replace parts components or accessories only with parts supplied or approved by Welch Allyn The use of any other parts can lead to inferior monitor performance and will void the product warranty Refer to Service chart on page 19 for information on the suggested corr
12. board and remove the cable and photosensor Removing the latch 1 Remove the four screws holding the latch bracket and remove the bracket Alignment slot T Latch bracket screws 4 Reassembly 4 inch lbs _ 54 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor 2 Remove the two latch springs by compressing them and lifting them off of the posts REASSEMBLY Note the small alignment slot on one side of the bracket and the small alignment hole on the other S 3 Remove the latch from the upper housing Note Interconnect boards shipped in early production cradles included a photosensor assembly that is no longer used Later Interconnect boards do not have the photosensor assembly e f you are reusing the original interconnect board leave the reflective foil intact otherwise disregard the reflective foil e If you are replacing the latch the replacement latch on the replacement board might not look like the original Reassembly Install the blue button cap on the latch Orient the flat side of the cap toward the catch Foil reflector used for some early production cradles with photosensor See the notes on this page and the previous page Latch catch The flat side of the blue cap is on the same side as the latch catch 55 Functional verification Functional verification overview This section describes the procedure
13. for a complete functional test to support recommended preventive maintenance schedules Equipment required The following equipment is required for functional verification of a fully configured monitor Commercially available general purpose medical test equipment Item Manufacturer part number specification Power supply Digital pressure meter Variable 0 28 VDC 0 100A minimum with voltage and current indicators for 1mA current measurement Netech Digimano 1000 or equivalent AC withstand voltage hi pot tester Associated Research 3605 or equivalent i Pot Return Test Probe Associated Research 38082 Return Retractor Hi Pot High Voltage Test Probe Associated Research 38083 Safe T Probe High Voltage Test Gun ECG Simulator Fluke 217A or Equivalent Masimo Sp0 Sp0 simulator to test the monitor and Sp0 sensor Fluke Biotek Index2 XL XLFE or equivalent Functional tester Masimo SET to test the monitor only Masimo SET Tester 1795 Cable Masimo SET DB9 LNCS 4 10 or 14 LNC 04 WA 4 LNCS cable or LNC 10 WA 10 LNCS cable or LNC 14 WA 14 LNCS cable Adapter cable Masimo 1645 MAC 1 Sp02 adapter cable LNOP to LNCS Nellcor SpQ Functional tester to test the monitor only Extension cable required for SRC MAX Nellcor SRC MAX Nellcor DEC 8 Syringe 60 ml Slip tip Luer BD Becton Dickinson 309654 or equ
14. hook Shoulder screw M 4x4 hex 12 inch Ibs 2 620 0424 xx Bed rail hook Machine screw M 4x5 12 inch Ibs 4 620 0188 xx Interconnect Bd Machine screw 4 20 3 8 4 inch lbs 4 620 0188 xx Latch bracket Machine screw 4 20 3 8 4 inch lbs 7 620 0415 xx Lower housing Machine screw 6 32 3 8 6 inch Ibs 3 620 0414 xx Lower housing Washer 0 281 OD 1 620 0149 xx 1 0 panel Thread forming screw 42 28 Ya 2 inch lbs 1 620 0413 xx 1 0 panel Nylon washer 0 187 0D Service Manual Disassembly and reassembly 21 Connectors Note All connectors are keyed or labeled to facilitate proper connection Take care to correctly align all connector halves before attempting to connect them Zero insertion force ZIF flex cable connectors ZIF connectors use a sliding outer piece that latches and unlatches to secure and release the flex cable ZIF cables cannot be successfully connected or disconnected without properly unlatching and latching the sliding outer piece To disconnect a ZIF cable 1 Using a suitable tool paper clip small flat blade screwdriver or small needle nose pliers slide the latching piece of the connector away from the connector body and toward the cable releasing the cable from the connector 2 Remove the cable To connect a ZIF cable 1 Slide the latching piece of the connector body away from the body i 28 Di
15. indicator on the cradle goes off Verify that the battery icon on the monitor display contains no lightning bolt Navigate to Setup gt Service gt Battery press and verify that the charger state is 6 Remove the monitor from the cradle and let the monitor continue to run for a minute Install the monitor in the cradle and verify that the status indicator on the cradle is briefly green and then goes off 58 Functional verification Welch Allyn Propaq LT Vital Signs Monitor Charge time optional procedure A normally discharged battery pack typically requires 3 hours 4 hours maximum to fully charge whether the monitor is on or off during charging Note A normally discharged battery pack is one on which a monitor has recently run for more than 5 minutes just before a low battery shutdown 1 Plug the monitor with the discharged battery into a powered cradle in an environment with temperature in the range 0 C to 40 C 2 Note the time required for the status indicator on the cradle to change from green to off This may be timed during Step 16 on page 57 System tests ECG With the battery fully charged 1 Power on the monitor observing the power up sequence to verify that all three LED indicators light and that all three audio tones sound Start a new patient Highlight TEX and press Navigate to Setup gt Service gt Voltages Show Info and press 9 ou ae A O Verify that the displayed measured val
16. lower pressure Note The monitor might momentarily display overrange reading before settling below 300 mmHg 8 Verify that the pressure reading on the monitor is within 6 mmHg of the reading on the digital pressure meter 9 Press to return to 0 mmHg pressure 10 Disconnect the hose from the monitor Radio test This test applies only to model 802LTAN 802LTAS 802LTRN and 802LTRS monitors 1 Locate the monitor within 10 feet unobstructed of an Acuity System wireless access point 2 Verify that the network connection symbol Y appears on the monitor Note If the connection symbol does not appear verify that the network is up and that the monitor has not been intentionally disconnected from the network If the connection symbol still does not appear refer to Radio on page 14 3 Navigate to Service gt Radio gt Show Info 4 Verify Model 802LTRN 802LTRS RSSI gt 41 Q 10 feet Model 802LTAN 802LTAS RSSI gt 61 Q 10 feet Safety test Hi Pot The monitor contains no isolation barriers The cradle contains two 4KV isolation barriers one between the 17 pin connector on the monitor and the dc power input connector on the cradle and one between the 17 pin connector on the monitor and the USB connector on the cradle These barriers are fully tested at the factory at 4KV rms at 60 Hz The power adapter also contains a 4KV isolation barrier Since each successive exposure to high voltage contribut
17. products To return a product for service contact Welch Allyn Technical Support and request a Return Material Authorization RMA number Note Welch Allyn does not accept returned products without an RMA When requesting an RMA please have the following information available Note Product name model number and serial number Your customer number A contact name and phone number A complete return shipping address Any special shipping instructions A purchase order number or credit card number if the product is not covered by warranty A full description of the problem or service request To ensure safe receipt of your monitor by the service center and to expedite processing and return of the monitor to you thoroughly clean all residues from the monitor before you ship it to Welch Allyn United States federal regulations prohibit the processing of any device contaminated with blood borne pathogens Welch Allyn thoroughly cleans all returned monitors on receipt but any monitor that cannot be adequately cleaned cannot be repaired Before shipping the monitor please observe these packing guidelines Remove from the package all hoses connectors cables sensors power cords and other ancillary products and equipment except those items that might be associated with the problem Put the monitor enclosed in a plastic bag with a packing list into the original shipping carton with the original packing materials or int
18. rate test Functional verification 61 1 Attach a neonatal hose 008 0265 XX to the monitor NIBP air connector 2 Connect the test syringe set to a volume of 35 ml to the neonatal hose See 35 ml test volume on page 73 Note The syringe plunger must not move when pressure is applied to the syringe cylinder 3 Set the monitor patient mode to Adult 4 Start an NIBP reading 5 Verify that the monitor displays the message Equipment Alert NIBP Fault Kinked or neonate hose A Note Note WARNING f the message Kinked or neonate hose does not appear remove the monitor from service Characterize NIBP Characterize NIBP on page 21 and then repeat this Characterization Test If the monitor cannot pass the Characterization Test return it immediately to an authorized Welch Allyn Service Center WARNING Use of an uncharacterized monitor can result in overinflation of neonatal cuffs The monitor is characterized at the factory If any change to the NIBP components occurs the monitor must be withheld from service until it has been characterized again If the time spent to run these tests is too long the monitor times out and dumps pressure This test method uses a higher test pressure than required for compliance to regulatory standards because only one of the monitor choices for built in test pressures is equal to or greater than the maximum pressure required by regulatory standards It also uses
19. Filter 620 0385 XX O Ring Filter 620 0397 XX Strap Lugs Fasteners monitor 620 0383 XX Screw 6 32 X 437 Captive Slt SS 620 0048 XX Screw 6 32 X 5 PH Ph NyLoc SS 620 0049 XX Screw 6 32 X 1 PH Ph NyLoc SS 620 0149 XX Screw 2 28 X 250 TF PH Ph ST Zinc Plastite 620 0278 XX Screw 4 40 X 5 PHH PNH SST NyLoc Patch 620 0290 XX Screw 4 40 X 25 PHH PNH SST with NyLoc Patch 620 0408 XX Screw 4 24 X 38 Flt PHH Type BT 630 0260 XX Cap Plastic Insert Guide Pin 620 0418 XX Washer Flat 215 0 D 115 1 D 020 Thick NPR 620 0217 XX Kepnut 4 40 Steel Zinc Plated 650 0021 XX Loctite S LH No 425 Thread Locker 72 Replacement parts Welch Allyn Propaq LT Vital Signs Monitor Charging cradle 020 0635 XX 020 0638 XX 020 0650 XX Interconnect PCB Power Board Assembly with Power and Interconnect Cables Panel Assembly 1 0 Cradle 600 0544 XX 503 0058 XX 020 0637 XX Gasket Adhesive 1 0 Panel Fuse 3A Slo Blo 2AG Housing Upper Cradle 630 0251 XX 630 0252 XX 630 0253 XX 020 0652 XX Latch Cradle Bracket Latch Cradle Button Latch Cradle Housing Lower Cradle Assembly with USB 020 0651 XX 640 0637 XX 630 0259 XX Housing Lower Cradle Assembly without USB Label Cradle Plug USB Cradle 600 0526 XX 620 0406 XX 600 0552 XX Foot Cradle 4 per Spring Latch Cradle 2 per Foil Latch Cradle Fasteners cradle 620 0188 X
20. IBP on page 21 nal verification on page 55 Send the monitor to a Welch Allyn service center See Returning products on page 6 Send the monitor to a Welch Allyn service center See Returning products on page 6 20 Troubleshooting and repair Welch Allyn Propaq LT Vital Signs Monitor Cradle Service Action Replace the fuse 1 Replacing the fuse on page 47 Replace the interconnect board 1 Disassembling the cradle on page 47 2 Functional verification on page 55 Replace the power board 1 Disassembling the cradle on page 47 2 Functional verification on page 55 Replace the 1 0 panel 1 Disassembling the cradle on page 47 2 Functional verification on page 55 Replace the upper housing 1 Disassembling the cradle on page 47 2 Functional verification on page 55 Replace the lower housing 1 Disassembling the cradle on page 47 2 Functional verification on page 55 Service Manual Troubleshooting and repair 21 Service menus for repair and network troubleshooting In addition to the service menus supporting functional verification these menus support the following service procedures Characterize NIBP 0 0 ooccccoco ee 21 SELCO ONS naar a a aia 23 Checkradio Status lt a lt 5 aa ias E eee eee 23 Note Before beginning any service procedure read the entire procedure to
21. Propag LT Vital Signs Monitor Service Manual Software version 1 5X or later Welch Allyn Advancing Frontline Care ii Welch Allyn Propaq LT Vital Signs Monitor 2011 Welch Allyn All rights are reserved To support the intended use of the product described in this publication the purchaser of he product is permitted to copy this publication for internal distribution only from the media provided by Welch Allyn No other use reproduction or distribution of this publication or any part of it is permitted without written 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 ailure to use this product in accordance with the instructions cautions warnings or statement of intended use published in this manual Welch Allyn Propaq Acuity FlexNet Smartcuf and Flexible Monitoring are registered trademarks of Welch Allyn ParamSet is a rademark of Welch Allyn Masimo SET and LNCS are registered trademarks and FastSAT and APOD are trademarks of Masimo Corporation Possession or purchase of a Masimo SpO equipped monitor does not convey any express or implied license to use the device with unauthorized sensors or cables which would alone or in combination with this device fall within the scope of one or more of the patents relating to this device Nellcor and Oximax are registered trademarks of Ne
22. Remove any remaining gasket pieces from the front panel and discard them REASSEMBLY 1 Install a new gasket 2 Align the new speaker for proper cable routing 3 Seat the speaker on the gasket 36 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor Removing the main board from the bottom chassis assembly Caution Do not touch move or adjust the radio antenna The radio antenna is extremely fragile and is exposed during this procedure If the antenna is damaged the monitor must be returned to a Welch Allyn authorized Service Center for repair 1 Removing the lithium ion battery assembly on page 29 2 Separating the top and bottom chassis halves on page 31 3 Disconnect the power USB flex cable from the main board connector P2 ee Power USB cable Ferrite bead 4 Remove the four screws holding the main board to the bottom chassis Service Manual Disassembly and reassembly 31 Main board screws Reassembly 4 inch Ibs 5 Lift the top of the main board slightly away from the chassis to access the NIBP tubing connection to the air inlet filter Lift this side of the main board slightly to access the NIBP tubing connection underneath 6 Disconnect the NIBP tubing from the air inlet filter port A Caution Do not apply tool edges or serrations to the tubing The tubing is fragile especially at the joints To av
23. Signs Monitor V y E REASSEMBLY The pump input suction port is slotted and is oriented away from the main board The output port pressure is not slotted and is oriented toward the main board Input smaller hole with slot POLS Output larger hole without slot 5 Disconnect and set aside the three tubing assemblies oF Input to smaller hole im with slot _ Output to larger hole without slot NIBP disassembly part 2 Removing the pump 6 Note the relative positions of the pump the pump wires and the cable ties securing the pump Service Manual Disassembly and reassembly 43 Cable ties Pump wires 7 Note how the two pump wires are connected to the pump Red wire to the terminal Red Black Black wire to the unmarked terminal 8 Desolder the two pump wires connected to the pump 9 Clip the pump cable ties REASSEMBLY Secure the pump wires INSIDE the cable ties Position the pump and replacement cable ties in the locations noted in step 6 on page 42 The back of the pump should align with the back of the pump bracket Note that the pump wires go inside the cable ties as shown Cable ties Pump wires Ls NIBP disassembly part 3 Removing the valve assembly 10 Note the routing of the cable pack through the notch in the bottom of the valve assem
24. Voltage power supply Within range 7 Pixels Visual 10 Buttons Visual 13 Charger state 8 ECG 5 Waveform Present Heart rate 80 bpm 3 bpm 6 8 Single lead fail Lead Fail message for each repeat for each lead lead 12 Pacer indicator Present Respiration 5 Waveform Lead 1 Present Heart rate 20 bpm 2 bpm 8 Waveform Lead 2 Present Heart rate 20 bpm 2 bpm Sp0 monitor only Nellcor 4 Pulse rate 60 bpm 60 bpm 3 bpm Saturation 75 75 3 6 Pulse rate 200 bpm 200 bpm 3 bpm 8 Saturation 90 90 3 Sp0 monitor only Masimo 2 Pulse rate 61 bpm 3 bpm Saturation 81 2 Sp0 monitor and sensor Pulse rate Y 60 bpm 60 bpm 4 bpm Saturation 94 94 4 continued below Service Manual Test NIBP characterization Specification Result Pass Functional verification NA 69 Fail 5 Wrong cuff alert Kinked or neonate cuff mesage appears NIBP leak rate 8 Leak rate 12 Leak rate gt 291 mmHg lt 8 mmHg in 10 seconds NIBP accuracy 4 Accuracy 80 mmHg monitor reading meter reading 3 mmHg 6 Accuracy 150 mmHg monitor reading meter reading 3 mmHg 8 Accuracy 300 mmHg monitor reading meter reading 6 mmHg Radio 2 Network connection Y symbol is present 4 RSSI 10 feet RSSI gt 41 802LTRN RS RSSI gt 61 802LTAN AS Safety Hi Pot
25. X 620 0415 XX 620 0414 XX Screw Plastite 4 20 X 375 60 1 Pan Head Philips Screw 6 32 X 375 PNH PHH SST PTH Washer 281 0 D 175 1 D 031 Thick Nylon 620 0423 XX 620 0424 XX 620 0149 XX 620 0413 XX 020 0636 XX Screw M4 X 4 PRCN Shoulder AW SST 2 5 mm Hex Drive Screw M4 X 5 mm PNH PHH SST Screw 2 28 X 250 TF PH PH ST Zinc Plastite Washer 187 0 D 125 1 D 031 Thick Nylon Fastener Assortment Monitor Cradle 73 35 ml test volume Refer to the illustration below e 2 Move the syringe plunger to the 35 ml line Drill a small hole for example 9 64 through the syringe and the plunger shaft at a location between the plunger and the top of the syringe Insert a rod or bolt for example a 6 32 screw through the hole so that the plunger cannot move creating a constant volume in the syringe of 35 ml 2 ml Secure the rod or bolt so that it cannot fall out of the hole 14 35 ml test volume Welch Allyn Propaq LT Vital Signs Monitor Index 15 A accessories 1 adhesive gasket 47 air filter replacing 28 antenna correct position of 36 not user serviceable 3 assembly procedures 23 autoclave 1 B battery end of life 27 operating states 14 operation 16 procedure partial discharge 54 removing 27 storage recommendations 16 troubleshooting 14 C cable routing 41 49 case disassembly 29 caution term defined 2
26. a much smaller test volume than required Using this much more stringent test method assures not only that the monitor meets the requirements of all regulatory standards but also verifies that the leak rate of the monitor is sufficient for the monitor s neonatal applications 1 Attach a 1 neonatal cuff and hose to the monitor 2 Wrap the cuff securely around a solid cylinder of circumference between 1 6 and 1 9 inches 4 1 and 4 8 cm 3 Navigate to Service gt NIBP gt NIBP Test Note Four test pressures O 80 150 and 300 mmHg can be selected The actual instantaneous pressure achieved as displayed in the lower left can vary significantly from the selected test pressure The variance is greatest for the smallest test volumes where actual pressure attained can be 10 to 20 mmHg greater than the nominal value of the test pressure 62 Functional verification Welch Allyn Propaq LT Vital Signs Monitor Accuracy test Note Wait one minute for the NIBP to initialize before you select a test pressure Note Before you switch from one test pressure to another wait for the pump to fully inflate the cuff and stop pumping Press 9 to start the test at 80 mmHg The cuff inflates to approximately 95 mmHg After several seconds press e again to inflate to 150 mmHg After several seconds more press 8 again to inflate to 300 mmHg The cuff inflates to 300 mmHg and the instantaneous pressure display at the lower left re
27. ad to serious personal injury A Caution No component level repair of circuit boards and subassemblies is supported Use only the repair procedures described in this manual Note Repair and replacement of the main board is not supported Any service work on the main board must be performed by certified and qualified service personnel at an authorized Welch Allyn service center For contact information see page ii Repair and replacement of the radio and the antenna is not supported Any service work on the radio and the antenna must be performed by certified and qualified service personnel at an authorized Welch Allyn service center For contact information see page ii This guide provides troubleshooting information assembly procedures and instructions for functional testing and performance verification It is intended for use only by technically qualified service personnel This guide applies only to the Propaq LT monitor For service information about any other model of the Propaq monitor refer to the service manual for that product Technical support services Welch Allyn offers the following technical support services Telephone support 1 800 289 2501 and 1 503 530 7500 Loaner equipment Service agreements Service training Replacement service parts Factory service 6 Overview Welch Allyn Propaq LT Vital Signs Monitor For information on any of these services call one of the numbers listed on page ii Returning
28. ads Wait until the pressure drops enough for the display to read 299 mmHg Wait 10 more seconds and then verify that the instantaneous pressure gt 291 mmHg Press 9 to select 0 mmHg and release pressure Note Optionally you can also test the leak rate at lower pressures using the following 10 11 12 additional steps Pump to any pressure Wait 15 seconds and note the instantaneous pressure reading Wait another 10 seconds and verify that the instantaneous pressure is within 8 mmHg of the noted pressure Remove the neonate cuff from the monitor and replace it with an adult cuff and hose and a digital pressure meter Securely wrap the cuff around a solid cylinder of diameter between 3 2 and 4 3 inches 8 1 and 10 9 cm Monitor NIBP Pressure meter connector Adult cuff wrapped around a cylinder Press to start the test at 80 mmHg The cuff inflates to approximately 80 mmHg and then settles to a lower pressure Verify that the pressure reading on the monitor is within 3 mmHg of the reading on the digital pressure meter Press 9 to start the test at 150 mmHg The cuff inflates to approximately 150 mmHg and then settles to a lower pressure Service Manual Functional verification 63 6 Verify that the pressure reading on the monitor is within 3 mmHg of the reading on the digital pressure meter 7 Press 9 to start the test at 300 mmHg The cuff inflates to approximately 300 mmHg and then settles to a
29. agile and execute all procedure steps with care and precision Except where noted reassembly is the reverse of the disassembly Reassembly notes are identified by underlined text 26 Disassembly and reassembly Screws A Note Following are recommended torque specs for all screws used in the monitor Welch Allyn Propaq LT Vital Signs Monitor Caution Observe recommended screw torque specifications especially with screws that secure directly into plastic standoffs To avoid mismatching screws and holes keep the screws for each piece with that piece as you remove modules circuit assemblies and other components Oty Part number Location Type Size length Torque Monitor 2 620 0383 xx Battery Pack Captive screw 26 32 7 16 2 inch lbs 620 0049 xx Case Machine screw 46 32 1 6 inch Ibs 2 620 0048 xx Case Machine screw 6 32 Yo 6 inch Ibs 4 620 0290 xx Main Board Machine screw 4 40 4 4 inch lbs 1 620 0278 xx Valve bracket Machine screw 4 40 2 4 inch lbs 2 620 0290 xx Pump bracket Machine screw 4 40 Ya 4 inch lbs 4 620 0149 xx Display bracket Thread forming screw 42 28 Ya 2 inch lbs 2 620 0408 xx Input flex assy Thread forming screw 4 24 3 8 4 inch lbs bracket 2 630 0260 xx Power flex conn Guide pin 4 40 Y 2 620 0418 xx Power flex conn Flat washer 0 215 OD 2 620 0217 xx Power flex conn Kepnut 4 40 Loctite Cradle 2 620 0423 xx Bed rail
30. at Step 6 and Step 7 for each lead Reconnect all leads Set the ECG simulator to a paced signal Set the monitor pacer indicator ON Setup gt ECG gt Pacer Indicator Verify that the monitor ECG waveform displays the pacers as vertical dashed markers Pacemaker signal indicators Set the Resp parameters on the ECG simulator to e 20 breaths minute e breath size 1 ohm e base impedance between 200 and 1200 ohms e Lead Select to lead On the monitor turn on Resp Set the Waveform Source to Resp See Step 3 and Step 4 in ECG on page 58 Set the monitor Resp Lead to Ld1 RA LA Resp min Resp Lead Verify that the monitor displays a Resp waveform with a rate of 20 bpm 2 bpm Switch the respiration simulator lead to lead Il Set the monitor Resp Lead to Ld2 RA LL 60 Functional verification Welch Allyn Propaq LT Vital Signs Monitor 8 Verify that the monitor displays a Resp waveform with a rate of 20 bpm 2 bpm SpO Test elther the monitor or the monitor with the sensor as required for your application Note f the default simulation values are outside the monitor alarm limits either adjust the alarm limits or silence the alarms when they occur Testing the Model 802LTxN monitors only 1 Power off the monitor 2 Connect the Nellcor SRC MAX SpO Functional Tester to the SpO input connector through a Nellcor DEC 8 extension cable 3 Power on the monitor The simulator flashes some
31. ault monitor is in the cradle and the connected connect it cradle is not powered Fault state if the cradle fuse is Replace the fuse Replacing the open fuse on page 47 Yellow On Fault power to the monitor Attempt to recharge by removing automatically disconnected by the the monitor from the cradle and cradle Possible monitor fault reinserting the monitor in the cradle If the fault persists attempt to recharge another monitor to determine whether the problem is with the cradle or with the monitor main board Fault no monitor in the cradle Power board fault Replace the power input and input fuse OK power board Disassembling the cradle on page 47 2 Monitor docked Green Green Normal operating state n a charging 3 Monitor docked Yellow Green Fault battery pack temperature is Bring the battery pack temperature out of range high or low temperature into specified range fault 0 C 40 C 4 Monitor docked Yellow Green Fault battery pack can no longer Replace the battery pack battery voltage be charged Removing the lithium ion battery too low for assembly on page 29 charging 5 Monitor docked Yellow Green Fault Battery pack failed to Attempt again to charge by timeout fault charge within the specified time removing the monitor from the cradle and reinserting the monitor in the cradle Replace the battery pack Removing the lithium ion battery assembly on page 29 6 Monitor docke
32. ax Limit 2 50 mA Arc Sense 0 Min Limit 0 003 mA Frequency Set to local 50 or 60 Hz Ramp Up 5 0S Continuity Off Dwell 5 0S Connect Off Delay 0 2 Connect the retractable return probe to the RETURN connector of the hi pot tester 3 Connect the high voltage test probe to the HIGH VOLTAGE HV connector of the hi pot tester and as required to the remote trigger jack 4 Extend the probe tip from the retractable return probe and touch it to either of the negative sockets of the DC input connector on the side of the cradle 5 Extend the high voltage test probe tip and touch it to pin 7 or pin 11 of the P1 Interconnect connector inside the cradle bay A Caution Do not bend the connector pins Service Manual N eb avadatat Functional verification 65 5900900 OO Mo 6 Holding both probes in contact with the specified pins trigger the hi pot test 7 Hold the test probes in place until the test is completed Verify that PASS appears in the tester display 8 For cradles equipped with a USB port a b Move the return probe to the metal shell of the USB connector on the cradle Keep the high voltage probe on either pin 7 or pin 11 of the interconnect connector With both test probes in contact trigger the hi pot test Hold the test probes in place until the test is completed Verify that PASS appears in the tester display Battery run time opti
33. ay cause undesired operation Caution Changes or modifications not expressly approved by Welch Allyn could void the purchaser s authority to operate the equipment REF 810 2712 XX DIR 810 2713 01 A EC REP Regulatory Affairs Representative Welch Allyn Inc Welch Allyn Limited 8500 SW Creekside Place Navan Business Park Beaverton OR 97008 7107 USA Dublin Road Navan County Meath Republic of Ireland www welchallyn com Printed in USA Maso SEL WelchAllyn Contents 1 Safety SUMMARY ara a aa ul EME IO 1 WAI Sat o ode dl beter de Ita 1 General safety considerations o o o oooooooo eae 1 Electrostatic discharge ESD emreis eee 2 SV MIDI Sica tarsal O E RN TOA 2 2 OVEIVICWE oss Gai eee hae ECE OSS CROCE aH ONE SE 3 Purpose aNndSCOp eu 4 center a dd idos 3 Technical Support serice S ce ow hh ea Al At ee da 3 REtuUTIN O Products saene od nee be et a Ba th ees 4 Product configurations o 4 Recommended service intervalS 0 0 0 ees 5 SENICE OPIN Serret ease selene ol Mucus ee EM Cotes cat 5 Related documents ac ac ok a ane Se Be a Bae oA OR ee oP 6 CONOIS haeata a ak teins ne a ea e a oath le ey oaaae e dy ott os 6 SERVICE MENU cake aks oe days wie Spat dh tata a E E A a E saw a et en Sain 6 3 Troubleshooting and repair 2 0 0 9 Troubleshooting Chartere a a A is 9 Battery use and Care 6 2 ee 16 SEMVICE Chart aeae a ae a then AB tol BASAL enh ek a y a Med da e ate 17 S
34. bly 44 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor Cable routing notch 11 Remove the single screw securing the valve assembly to the main board Screw il Reassembly 4 inch Ibs m Pressure transducers lt r A Caution Do not attempt to remove the pressure transducers The pressure transducers are not user serviceable Caution Take extra care to protect the pressure transducers as you remove the valve assembly 12 Lift the valve assembly straight up and off of the pressure transducers Pressure transducers Service Manual Disassembly and reassembly 45 Removing the patient connector panel from the bottom chassis 1 Removing the lithium ion battery assembly on page 29 2 Separating the top and bottom chassis halves on page 31 3 Removing the main board from the bottom chassis assembly on page 36 4 Remove the clear plastic cover from the ferrite beads by removing the two screws one is under a strip of foam tape securing it to the chassis Reassembly 4 inch Ibs 5 Pry the ferrite beads from the adhesive on the bottom case Caution The ferrite beads are extremely brittle and can chip or crack if mishandled 6 The connector assembly is held in place by the two snap in clips and by an adhesive gasket Remove the assembly by pushing in the clips while applying upward pressure on the assembly to break the grip of the gasket
35. bly and reassembly Welch Allyn Propaq LT Vital Signs Monitor FO 10 Disconnect J1 and J2 from the Interconnect board 11 Remove the Power board and l O panel by sliding the Power board out from the slots in the upper housing S 12 Disconnect the I O panel connector from J1 on the Power board Service Manual Disassembly and reassembly 53 REASSEMBLY 1 Clean all remnants of adhesive from the upper and lower cradle cases and from the l O panel if you are reusing it 2 Apply a new adhesive gasket to the I O panel Note On USB equipped cradles keep the USB port cover out of the way during_ reassembly 3 Connect the I O panel to J1 on the Power board 4 Install the Power board into the slots in the upper housing 5 Set the I O panel in place but do not remove the protective film from the adhesive gasket until the lower cradle housing is installed Removing the interconnect board 1 Remove the four screws securing the Interconnect board to the upper housing and lift the Interconnect board from the housing Interconnect board pa Reassembly 4 inch lbs J Note An early version of the Interconnect board included a photosensor attached by a 4 wire cable If this photosensor and cable are present clip the cables close to the
36. ctor J2 on the back of the main board 40 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor Power switch cable connector J2 11 Remove the main board Main board with NIBP module Service Manual Disassembly and reassembly 41 Removing the NIBP assembly from the main board WARNING After replacing any part of the NIBP assembly you must characterize NIBP Failure to characterize NIBP could lead to excessive cuff pressure for neonatal patients This procedure consists of 3 parts e Part 1 Removing the Tubing e Part 2 Removing the Pump e Part 3 Removing the Valve Assembly Depending on what you are replacing do one of the following e Part1 e Parts 1 and 2 e Parts 1 and 2 and3 NIBP disassembly part 1 Removing the tubing 1 Removing the lithium ion battery assembly on page 29 2 Separating the top and bottom chassis halves on page 31 3 Removing the main board from the bottom chassis assembly on page 36 Caution Use extra care when handling the tubing The tubing especially at the joints is very fragile e Never use sharp edged tools to grip or remove the tubing e Always grip the tubing as close as possible to the point of contact with the connector Valve assembly Tubing Pressure transducers 4 Disconnect the two tubing sections from the pump 42 Disassembly and reassembly Welch Allyn Propaq LT Vital
37. ctory configuration A Caution If you send a model 802LTAN or model 802LTAS monitor to Welch Allyn for service and the monitor is then returned to you you must reapply any custom radio settings to the monitor before you attempt to reconnect the monitor to your Acuity network Radio troubleshooting information applies only to radio equipped monitors It is not intended for comprehensive troubleshooting of the Acuity system To troubleshoot the Acuity system refer to the appropriate Acuity service contact for your system Symptom Possible Cause Possible Corrective Action No Acuity connection network communication icon Y is not displayed on the monitor screen Wireless communication disabled in the monitor configuration Use the configuration utility to enable wireless communication for the monitor No Acuity connection network communication icon with slash X is displayed on the monitor screen and the yellow indicator above the screen is lit Monitor is out of radio range 802LTRN S RSSI gt approx 60 802LTAN S RSSI gt approx 70 Move the monitor within range of an Acuity access point Netname ESSID set wrong Set the monitor network name to the Acuity network name Default com protocol USB connected to the monitor through the cradle Disconnect the USB cable from the cradle No Acuity connection network communication icon with slash X and Disconnecte
38. curs replace the battery pack Removing the lithium ion battery assembly on page 29 Battery cell s over voltage probably a charge imbalance Charger state 7 Replace the battery pack Removing the lithium ion battery assembly on page 29 Charger board failure Examine the cradle internal cabling the cradle power board and the interconnect board Removing the power USB flex connector from the bottom chassis on page 46 Missing or erroneous LCD characters Faulty LCD Replace the LCD Disassembling the top chassis on page 34 Service Manual Troubleshooting and repair 13 Symptom Button or buttons inoperative Possible cause Faulty button or buttons Possible corrective action Replace the top chassis assembly Disassembling the top chassis on page 34 Voltages displayed on the service menu are out of range Repeated occurrence of SpO Fault No sensor detected Main board fault The internal Sp0 connector is loose Send the monitor to an authorized Welch Allyn Service Center for service See page ii Secure the internal SpO connector Removing the main board from the bottom chassis assembly on page 36 Faulty SpQ connector panel Replace the connector panel Removing the patient connector panel from the bottom chassis on page 45 The NIBP air leak exceeds the specification Worn O ring in the NIBP hose connec
39. d are displayed on the monitor screen and the green indicator above he screen is flashing Monitor is intentionally disconnected from the network by the user Use the monitor interface to connect to the network Radio Monitoring service screen persistently displays Searching or access point monitor displays Y Monitor radio cannot find a signal from the network Move the monitor within range of an access point on the current network Verify the Netname Radio Monitoring service screen persistently displays Searching or access point and Radio sleeping monitor displays X 802LTAN 802LTAS Move within range of an access point and wait for up to 3 minutes Display alternates between search and radio sleeping The monitor Netname does not match the Acuity network name Set the monitor Netname to the Acuity network name default com protocol Service Manual Troubleshooting and repair 15 Symptom Radio Monitoring service screen persistently displays Searching for access point monitor displays X 802LTAN 802LTAS Possible Cause Invalid authentication credentials default network settings Possible Corrective Action Reset the monitor radio to factory defaults 1 Enter the service screen 2 Press simultaneously JAP 3 Select Yes and press Invalid authentication credentials custom network settings Refer t
40. d Off Green Normal operating state n a charging complete 7 Monitor docked Yellow Green Fault battery pack cells are Replace the battery pack overcharge fault unbalanced or the cradle is faulty Removing the lithium ion battery assembly on page 29 Replace the power board in the cradle Disassembling the cradle on page 47 8 Monitor not n a n a Normal operating state n a docked 18 Troubleshooting and repair Welch Allyn Propaq LT Vital Signs Monitor Battery use and care The battery meets specification when used in an environment between 0 C and 40 C Operating the monitor in a cold environment below 20 C reduces battery run time When the battery is returned to a warmer environment battery run time returns to normal Sustained charging at high temperatures near 40 C reduces battery life The battery continues to discharge when removed from the monitor but at a much slower rate than if it were in the monitor The battery when removed from the monitor discharges more slowly at low temperatures and more quickly at high temperatures Maintain battery capacity by storing the battery e ina discharged state e removed from the monitor e ina cool dry place Service Manual Service chart This chart shows which procedure to use for specific service operations on monitors not covered by warranty Monitor A Troubleshooting and repair 19 Caution Do not service a monitor under warran
41. ective actions Symptom The power on self test fails Indicator 2 yellow LED flashes followed by an LED flash of any Possible cause Internal RAM failure Software error Possible corrective action Cycle the power If the error persists send the monitor to an authorized Welch Allyn Service Center for service See Returning products oo of green yellow and Unexpected reset detected on page 6 Recoverable Fault An invalid condition has been Restart the monitor If the fault does not Restart monitor detected that might be resolved reappear continue to use the monitor by restarting the monitor System Fault An unrecoverable system error Send the monitor to an authorized Welch Allyn Service monitor has occurred Service Center for service See Returning products on page 6 System Fault Radio fault detected Send the monitor to an authorized Welch Allyn Service radio Service Center for service See Returning products on page 6 Battery Fault The battery is not performing to Install a new battery Removing the lithium Install new battery Equipment Alert Charger Fault Service Charger specification ion battery assembly on page 29 Charging has timed out Charger state 5 Cradle power board failure Remove the moni or from the cradle and reinsert it and then attempt again to charge the battery If the bat
42. ervice menus for repair and network troubleshooting 19 4 Disassembly and reassembly 000 cece eee ees 23 Procedures Overview tec twenties EE E n ata dee wok bb eat Panay en ahs 23 Procedure Sa Mth sce ent rd ole Mtge ete eS Men lh Id Sy tat dened LE 27 5 Functional verificatioN assisen ash a E ROS 53 Functional verification OVEIVIe Wo 53 Equipment required nonan aaeeea 53 Procedures 4 piv arc A A A DS 54 Checklist and test results report form 2 0 0 eee 65 6 Replacement parts ceci a ea es 69 E io A A eRe eee 71 iv Contents Welch Allyn Propaq LT Vital Signs Monitor Safety summary All users of the monitor must read this safety summary and all warning and caution statements in the manual Warnings A WARNING Place the monitor and accessories in locations where they cannot harm the patient should they fall from a shelf or mount WARNING Do not connect more than one patient to a monitor WARNING Do not connect more than one monitor to a patient WARNING Do not use the monitor in an MRI suite or hyperbaric chamber WARNING To avoid explosion do not operate the monitor in the presence of flammable anesthetics WARNING Do not use cables with abraded or broken insulation WARNING Do not use a monitor that has been damaged If a monitor has been damaged remove it from service until it has been verified for proper operation by qualified service personnel WARNING Use only acc
43. es to the degradation of an isolation barrier and since no direct mains connection to the cradle exists the following tests use a hi pot voltage of 1 5KV as a reasonable compromise Optionally this hi pot test can also be done on the power adapter Electrical leakage tests for source and sink can also be done on the power adapter or on the cradle as follows 64 Functional verification Welch Allyn Propaq LT Vital Signs Monitor 1 Tie the ECG inputs of a leakage tester to either a the negative pin of the de output connector of the power adapter or b pin 7 or pin 11 of the 17 pin connector on the cradle 2 Tie the mains connector of the leakage tester to the ac cord of the power adapter or to the negative pin of the dc input connector of the cradle or to the metal shroud of the USB connector of the cradle Note however that with all insulation systems in place the leakage current of a product s insulation barrier is determined almost entirely by the capacitance inherent in that barrier and is thus fixed by materials and spacing within the product A hi pot test is more effective than a leakage test for verifying an isolation barrier Note Check with your local regulatory authority to see whether hi pot testing has special requirements to meet local laws and regulations 1 Set up the hi pot tester as follows Note For set up information refer to the tester manufacturer s instructions for use Voltage 1 500 VAC Ramp Down 0 M
44. essories approved by Welch Allyn Visit www welchallyn com The use of any other accessories can result in inaccurate patient data can damage the equipment and can void your product warranty WARNING Always use accessories according to the standards of your facility and according to the manufacturer s directions Caution Do not use cables that do not operate properly Caution Do not autoclave the monitor Caution Autoclave accessories only if the manufacturer s instructions direct you to do so Many accessories can be severely damaged by autoclaving 2 Safety summary Welch Allyn Propaq LT Vital Signs Monitor General safety considerations Frequently check all cables both electrically and visually If the monitor detects an unrecoverable problem it displays a brief Fault message See Alert Messages and Status Messages Propag LT Vital Signs Monitor Directions for Use 810 2713 XX Report all such errors to Welch Allyn Do not service a monitor under warranty Servicing a monitor under warranty voids the warranty All service on monitors under warranty must be performed by Welch Allyn or at a Welch Allyn authorized service center Electrostatic discharge ESD A ATTENTION CAUTION OBSERVE PRECAUTIONS FOR HANDLING SENSITIVE ELECTRONIC DEVICES ELECTROSTATIC DO NOT SHIP OR STORE NEAR STRONG SENSITIVE DEVICES ELECTROSTATIC ELECTROMAGNETIC MAGNETIC OR RADIOACTIVE FIELDS Caution Electr
45. ff 5 Disconnect the power cable from the cradle and the power supply 6 Connect the AC power adapter 503 0142 XX to the cradle and verify that the power indicator on the cradle is ON and the status indicator on the cradle is OFF 7 Dock the monitor into the cradle and turn on the monitor if it does not turn on spontaneously 8 Verify that the status indicator on the cradle is green 9 After the monitor completes its power up diagnostics navigate to Setup gt Service gt Battery and press Service Manual 10 11 12 Functional verification 57 ID SET_CAOJ 1T9L Y 3 00 06P Adult Rm Service NIBP ECG SpO2 USB Radio Software Display Voltages Buttons Battery ID SET_CAOJ 1T9L Y 3 00 06P Adult Rm Service NIBP ECG SpO2 USB Radio Software Display Voltages Buttons Battery Information SN V BAT Charge current Battery state Charger state Verify that the charge current is between 800 mA and 1100 mA and that the charger state is 2 Verify that the battery icon on the monitor is green with a lightning bolt Press to start the NIBP pump Note Pump startup may be delayed until power up NIBP testing is completed 13 14 15 16 17 18 19 20 Verify after several seconds of pumping that the charge current is less than 220 mA Verify after several seconds of pumping that V BAT is between 8 14 V and 8 55 V Press to stop the NIBP pump Leave the monitor in the cradle until the status
46. ing static sensitive components and assemblies Remove or insert static sensitive components and assemblies only with monitor power turned off Insert and seal static sensitive components and assemblies into their original static shielding bags before removing them from static protected areas Always test your ground strap bench mat conductive work surface and ground cord before removing components and assemblies from their protective bags and before beginning any disassembly or assembly procedures Service Manual Symbols A A Safety summary WARNING Indicates conditions that could lead to illness injury or death Caution In this manual indicates conditions that could damage equipment or other property 3 4 Safety summary Welch Allyn Propaq LT Vital Signs Monitor Overview Purpose and scope This is a reference for periodic preventive maintenance and corrective service procedures for the Propaq LT monitors models 802LTAN 802LTON 802LTRN 802LTAS 802LTOS and 802LTRS Corrective service is supported to the level of field replaceable units Field replaceable units include certain circuit board assemblies subassemblies case parts and other parts All field replaceable parts are listed in Replacement parts on page 71 A WARNING When performing a service procedure follow the instructions exactly as presented in this manual Failure to do so could damage the monitor invalidate the product warranty and le
47. ing the cradle on page 47 Problem with the monitor Send the monitor to an authorized Welch Allyn Service Center for service See Returning products on page 6 Monitor battery fails to charge Blown power input fuse on the DC power is applied but the power charger I O panel indicator on the cradle remains off Replace the fuse Replacing the fuse on page 47 Monitor battery run time duration is The battery is deficient less than specified Replace the battery Removing the lithium ion battery assembly on page 29 Radio cannot link up to the Acuity Central Station See Radio on page 14 Yellow indicator on the cradle Monitor current draw is too high Cradle circuit breaker is tripped Charger state 1 Service the monitor or the cradle Monitor has no battery pack Charger state 4 Install the monitor battery pack Removing the lithium ion battery assembly on page 29 Battery pack temperature is out of range Charger state 3 Return the battery pack to within the specified temperature range 0 C 40 C Battery pack voltage is too low or the battery fuse is blown Charger state 4 Replace the battery pack Removing the lithium ion battery assembly on page 29 Battery pack fails to charge in the specified time Charger state 5 Remove the monitor from the cradle and reinsert it and then attempt again to charge If the timeout reoc
48. interval of 15 minutes Service Manual Checklist and test results report form Functional verification Use a copy of this 3 page form to track your progress through the validation tests 67 Test Specification Result Pass NA Fail Charging LED operation 4 10 gt gt co N gt um 20 Inpu current cradle lt 50 mA S at mon S at us cradle powered itor not inserted us power adapter connected Power indicator ON Status indicator OFF Power indicator ON Status indicator OFF Status monitor running with Status indicator GREEN discharged battery Charge current battery fully 800 mA 1100 mA discharged Charger state battery fully 2 discharged Status battery charging green Charge current pump running lt 220mA Battery voltage pump running 8 14 V 8 55 V Status battery fully charged gt green Charger state battery fully 6 charged Status cradle transition Status indicator green and then OFF Battery charge time optional 2 Charge time lt 4 hours continued below 68 Functional verification Welch Allyn Propaq LT Vital Signs Monitor Test Specification Result Pass NA Fail System 1 Indicators start up Red yellow and green LEDs Low medium and loud tones 5
49. ivalent 56 Functional verification Welch Allyn Propaq LT Vital Signs Monitor Welch Allyn accessories and test equipment ECG cable 4 5 lead 008 0522 00 AAMI or 008 0522 01 IEC NIBP Hose Neonatal 8 008 0265 XX Neonatal 1 cuff disposable box of 10 008 0620 XX Adult Cuff 008 0628 XX NIBP Hose Adult 008 0864 XX DC Input Cable 008 0290 XX DC power adapter 503 0142 XX Procedures Charging cradle This procedure verifies charger operation It does not verify charger accuracy Voltage and current are reported on the service screens with wide tolerances due to measurement limitations of the monitor and limitations in how the cradle reports charging currents Charger voltages and currents are tested to very narrow tolerances at the factory Inspecting the monitor connector Inspect the 17 pin monitor connector to verify that it is clean and free of debris Partially discharging the battery With the monitor out of the cradle run the monitor until it does a low battery shutdown Charging LED operation 1 Observing correct polarity connect the DC input cable 008 0290 XX to the power supply 2 Set the power supply for 28 VDC 3 Connect the DC input cable from the power supply to the cradle 4 With the monitor removed from the cradle verify that the input current to the cradle is less than 50 mA the power indicator on the cradle is green and the status indicator on the cradle is o
50. llcor Puritan Bennett Software in this product is Copyright Welch Allyn or its vendors All rights are reserved The software is protected by United States of America copyright laws and international treaty provisions applicable worldwide Under such laws the licensee is entitled to use the copy of the software incorporated with this instrument as intended in the operation of the product in which it is embedded The software may not be copied decompiled reverse engineered disassembled or otherwise reduced to human perceivable form This is not a sale of the software or any copy of the software all right title and ownership of the software remain with Welch Allyn or its vendors For information about any Welch Allyn product call the nearest Welch Allyn representative USA 1315 685 4560 Australia 61 2 9638 3000 800 535 6663 800 074 793 Canada 800 561 8797 China 86 216 327 9631 European Call Center 35 3 46 906 7790 France 33 1 60 09 33 66 Germany 49 7477 92 71 86 Japan 81 33219 0071 Latin America 1 305 669 9003 Netherlands 31 15750 5000 Singapore 65 6419 8100 South Africa 27 11 777 7555 United Kingdom 44 20 7365 6780 Sweden 46 8 58 53 65 51 This device complies with Part 15 of the FCC rules and with the rules of the Canadian ICES 003 Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that m
51. lly rock the I O panel from side to side to break the bond of the adhesive gasket and then separate the I O panel from the upper housing Note Do not attempt to save the adhesive gasket around the l O panel This gasket cannot be reused 5 Remove and discard all pieces of the I O panel adhesive gasket 6 Unplug the AC power adapter from the cradle 7 Separate the upper and lower cases 50 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor A N Power board 8 Carefully detach the thin black rubber seal from the upper case REASSEMBLY Carefully install the thin black rubber seal in the trough in the lower case before joining the upper and lower case halves REASSEMBLY When the rubber seal is properly installed the ends of the seal extend into the I O panel opening opening for 1 0 Sn tubing ends Service Manual Disassembly and reassembly 51 REASSEMBLY Align the power board with the slots in the lower cradle housing ie lower cradle housing power a gt REASSEMBLY When closing the cradle bend the white insulator on the power board to alignment slots slide along the wall of the lower cradle housing insulator lower cradle housing 9 Note the routing of the J1 cable on the Interconnect board for later reassembly 52 Disassem
52. move the two screws securing the battery door Two screws securing the battery door Reassembly 2 inch lbs 2 Remove the battery assembly from the battery compartment 30 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor Battery compartment Battery assembly Battery door Replacing the air filter Note Itis not necessary to replace the air filter each time you service or repair the monitor See Recommended service intervals on page 7 1 Remove the air filter assembly a Air filter assembly Housing 2 Remove and discard the air filter and replace it with a new one Service Manual Disassembly and reassembly 31 Do 3 If the O ring shows signs of wear replace it with a new one REASSEMBLY Lubricate the outside of the O ring with a drop of alcohol to prevent it from riding up the side of the cylinder when inserted When properly installed the filter cylinder is perfectly flush with the chassis surface Cylinder flush with W ae chassis surface AN Separating the top and bottom chassis halves 1 Removing the lithium ion battery assembly on page 29 2 Remove the four cylindrical rubber plugs from the screw holes in the bottom chassis Rubber plugs removed REASSEMBLY When reinstalling the rubber plugs lubricate the screw holes with water applied with a damp cotto
53. n swab 32 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor 3 Remove the screws from the bottom chassis e Remove three screws from the top and one from the bottom left corner e Remove two screws from inside the battery compartment s Rear chassis screws Reassembly 6 inch Ibs 9 Oo Ue A 4 With the monitor face up lift the bottom of the top chassis enough to access the speaker cable and disconnect the speaker cable from J11 on the Main board Speaker cable J1 connector speaker 5 Rotate the monitor 180 to access the top of the top chassis 6 Disconnect the blue button pad cable from ZIF connector J7 SS ve Button pad cable Button pad cable connector J7 7 Rotate the monitor 90 to access the display cable connector J4 8 Disconnect the display cable from connector J4 Service Manual Disassembly and reassembly 33 o Display cable LT Display cable connector J4 9 Remove the slotted blue gasket that runs around the chassis halves REASSEMBLY The slotted blue gasket between the top and bottom chassis halves is directional it can be correctly aligned in only one way Take care to reinstall the gasket correctly 34 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor Disassembling the top chassis The top chassis assembly contains the top plastic panel assembly including the i
54. ntegrated overlay for buttons window LEDs and trim the display module and the speaker 1 Removing the lithium ion battery assembly on page 29 2 Separating the top and bottom chassis halves on page 31 3 Remove the display module Caution Take care to protect the front surface of the display module and all surfaces of the display screen from scratching and contamination a Remove the four screws from the display bracket and remove the bracket to free the display module Bracket screws Reassembly 2 inch lbs Display module back side Bracket Bracket screws Reassembly 2 inch lbs b Remove the display module REASSEMBLY Tighten the display bracket screws to a torque of 2 inch lbs Take care to avoid stripping the plastic screw mounts Gaskets Service Manual Disassembly and reassembly 35 c Remove the rubber gaskets from the display module d Setaside the display module protecting the display surface from damage Display surface 4 Remove the speaker REASSEMBL Y Before removing the speaker note the alignment of the speaker cable terminals for rerouting the cable Speaker cable terminals Speaker cable connector a Pry the speaker from the adhesive gasket securing it to the chassis b
55. o another appropriate shipping carton Write the Welch Allyn RMA number with the Welch Allyn address on the outside of the shipping carton Service Manual Product configurations Model numbers for the configurations are as follows Overview 1 Model Monitoring Parameters FlexNet Acuity Top Level Serial Communication Enabled Assembly Prefix 802LTON ECG NIBP Nellcor SpQ No 007 0160 XX KA 802LTRN ECG NIBP Nellcor SpQ Yes 802 11 FHSS 007 0161 XX KA 802LTAN ECG NIBP Nellcor SpQ Yes 802 11a 007 0384 XX KA 802LTOS ECG NIBP Masimo Sp0 No 007 0268 XX KA 802LTRS ECG NIBP Masimo Sp0 Yes 802 11 FHSS 007 0269 XX KA 802LTAS ECG NIBP Masimo Sp0 Yes 802 11a 007 0383 XX KA Recommended service intervals Interval or condition Action recommended Procedure Every 6 24 months per hospital protocols Every 36 months Every 36 months The battery does not hold a charge The monitor has been dropped or otherwise damaged The monitor is not functioning properly The monitor does not pass the functional verification Verify functionality Replace the air filter Replace the battery Check battery capacity Replace the battery Verify functionality Verify functionality Troubleshoot and repair and then verify functionality Return the monitor to an authorized Welch Allyn service center Functional verifica Replacing the al Removing the lithi assembly
56. o your Acuity network administrator Radio Monitoring service screen persistently displays Requesting an IP address and X is displayed on the monitor DHCP server is down Contact Welch Allyn Acuity technical support See page ii DHCP server has no more addresses Contact Welch Allyn Acuity technical support See page ii Radio Monitoring service screen persistently displays Sending Acuity broadcast All Acuity systems with wireless are unavailable Wait The Acuity system is at capacity for licenses Turn off another wireless monitor Frequent communication faults with no apparent cause On the Radio Monitoring service screen TX RX errors PERCENT is gt 5 Faulty antenna or poor antenna connection Send the monitor to an authorized Welch Allyn Service Center for service See Returning products on page 6 Faulty radio connection Poor radio coverage Send the monitor to an authorized Welch Allyn Service Center for service See Returning products on page 6 Verify that the network has a sufficient density of access points on the current network 16 Troubleshooting and repair Battery states and service Welch Allyn Propaq LT Vital Signs Monitor State Description Type of State Possible Corrective Action 0 Battery state unknown Normal transitory Should not If the state persists re
57. oid damaging the tubing disconnect using only your fingers or unserrated pliers REASSEMBLY When you reassemble the bottom chassis verify that the radio card and the antenna are still in the correct positions Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor ferrite bead in place foam tape white in place antenna tucked inside the as chassis mn Is AN Note f the radio card or the antenna has been moved out of position return the monitor to a qualified Welch Allyn service center The radio and the antenna are not field serviceable components REASSEMBLY When reconnecting the tubing lubricate the inlet port using a cotton swab dampened with water NIBP tubing ae Dampened cotton swab Air inlet filter port 7 Disconnect the ECG flex cable from ZIF connector J1 on the back of the main board ECG flex cable Service Manual Disassembly and reassembly 39 REASSEMBLY When reconnecting the ECG cable be certain that the cable leads are perpendicular to the board and to the ZIF connector before you lock the connector clips 8 Disconnect the SpO flex cable from connector J3 on the back of the main board J1 ECG ca n a pe SpO flex cable cdas A NN 9 Disconnect the tubing section at the point shown here Es ral Ye Disconnect the tubing here 10 Disconnect the power switch cable from conne
58. onal procedure Charge the monitor in a cradle until the status indicator on the cradle goes off A new fully charged battery pack is specified to operate the monitor given the conditions listed below for 8 hours under a heavy load or 24 hours under a light load Standalone Acuity connected Continuous monitoring Back light Off and display set to shortest time out period Display on for no more than 5 minutes per hour plus a period at the end of each NIBP measurement and a period for Low Battery equipment alerts Low Battery equipment alerts acknowledged within 5 minutes Monitor at 22 C 2 C HR PR tone set to Low Alarm tone set to Low Continuous monitoring Back light Off and display set to shortest time out period Display on for no more than 5 minutes per hour plus a period at the end of each NIBP measurement and a period for Low Battery equipment alerts Low Battery equipment alerts acknowledged within 5 minutes Monitor at 22 C 2 C HR PR tone set to Off Alarm tone set to Low In continuous communication no dropouts with Acuity 66 Functional verification Welch Allyn Propaq LT Vital Signs Monitor Light load 24 hours e ECG with normal sinus rhythm and 60 beats minute e Resp at 20 breaths minute Heavy load 8 hours e ECG with normal sinus rhythm and 60 beats minute e Resp at 20 breaths minute e SpO with saturation of 98 PR of 60 beats minute e NIBP auto
59. ostatic discharge ESD can damage or destroy electronic components Handle static sensitive components only at static safe workstation Caution Assume that all electrical and electronic components of the monitor are static sensitive Electrostatic discharge is a sudden current flowing from a charged object to another object or to ground Electrostatic charges can accumulate on common items such as foam drinking cups cellophane tape synthetic clothing untreated foam packaging material and untreated plastic bags and work folders to name only a few Electronic components and assemblies if not properly protected against ESD can be permanently damaged or destroyed when near or in contact with electrostatically charged objects When you handle components or assemblies that are not in protective bags and you are not sure whether they are static sensitive assume that they are static sensitive and handle them accordingly Perform all service procedures in a static protected environment Always use techniques and equipment designed to protect personnel and equipment from electrostatic discharge Remove static sensitive components and assemblies from their static shielding bags only at static safe workstations a properly grounded table and grounded floor mat and only when you are wearing a grounded wrist strap with a resistor of at least 1 megohm in series or other grounding device Use only grounded tools when inserting adjusting or remov
60. ottom chassis assembly 36 Removing the NIBP assembly from the main board 41 Removing the patient connector panel from the bottom chassis 45 Removing the power USB flex connector from the bottom chassis 46 Disassembling the cradle ooooooocococcocc eee 47 Removing the lithium on battery assembly A Note WARNING The lithium ion battery can deliver currents sufficient to cause serious personal injury and to damage the monitor Before opening the monitor for any reason and before you begin any procedure described in this manual always remove the battery first WARNING The only safe method for charging the monitor battery is to insert the completely assembled monitor with the completely assembled battery pack correctly installed into the completely assembled charging cradle Attempting to charge the monitor battery by any other method creates a significant risk of explosion or patient shock hazard WARNING Do not short the battery connector pins WARNING Do not attempt to disassemble the battery The battery pack contains no user serviceable parts When the monitor the cradle or the battery reaches end of life recycle it locally according to national state and local regulations or return it to Welch Allyn The battery pack assembly consists of the rechargeable lithium ion cells a protection board and the battery door It can be replaced only as an assembly 1 Re
61. place the battery persist pack Removing the lithium ion battery assembly on page 29 1 Battery voltage too high Fault possible cell imbalance Replace the battery pack Removing the Indication can occur with the or charger faul lithium ion battery assembly on page 29 monitor in or out of the cradle or the cradle power board Disassembling the cradle on page 47 2 Battery fully charged Normal operating state 3 Battery partially charged Normal operating state 4 30 minutes of charge Normal operating state remaining undocked 5 30 minutes of charge Normal transitory state remaining docked 6 5 minutes of charge remaining Normal operating state undocked 7 5 minutes of charge remaining Normal transitory state docked 8 Battery is exhausted Normal operating state undocked 9 Battery is exhausted docked Normal operating state 10 Battery voltage is too low for Faulty battery pack Replace the battery pack Removing the recharging docked lithium ion battery assembly on page 29 Service Manual Charger states and service Troubleshooting and repair 17 State Description Charger Charger Type of State Possible Corrective Action Status Power LED LED 0 Charger state n a n a Normal initial transitory state of n a unknown very short duration 1 Monitor docked Off Off Normal operating state when the If the power adapter is not No power f
62. press the foam pad Service Manual Disassembly and reassembly Disassembling the cradle Note To facilitate reassembly observe carefully while disassembling Replacing the fuse 3A slow blow 2AG 1 Remove the fuse cover by rotating it using a screwdriver 90 counterclockwise A E T3A 250V fuse cover 0D1228V 3 2 Remove and replace the fuse 3 Replace the fuse cover Removing the bed rail hook 1 Remove the two screws securing the handle to the rear of the cradle 2 Slide the handle up and off of the shoulder screws 47 48 Disassembly and reassembly Welch Allyn Propaq LT Vital Signs Monitor Removing the lower housing I O panel and power board 1 Remove the seven machine screws from the bottom of the lower housing Bottom chassis screws 7 Reassembly 6 inch Ibs REASSEMBLY Note the three screw holes that have nylon washers These washers must be used in these screw holes Nylon washers 2 Remove the threadlocking screw and nylon washer from the bottom of the I O panel Reassembly 2 inch bs USB equipped models only bend this rubber plug out to detail remove the bottom chassis Service Manual Disassembly and reassembly 49 3 With the AC power adapter unplugged from the wall plug the AC power adapter into the cradle AC power input connector 4 Using the AC power adapter connector for leverage carefu
63. sassembly and reassembly 2 Insert the flex cable into the connector Welch Allyn Propaq LT Vital Signs Monitor 3 Slide the latching piece toward the connector body until it clicks into place A Caution Do not attempt to remove a flex cable until the ZIF latch has been opened A Caution Never attempt to disconnect any cable by pulling on the cable wires Always disconnect cables by grasping and pulling only on the connector halves Connector locations Connector Connects with Connector Connects with Main Board Charging Cradle Interconnect Board J1 ECG flex J1 Cradle power board 3 conductor J2 On Off Switch J2 Cradle power board 10 conductor J3 SpO flex JP1 External USB J4 Display module P1 Propag LT Monitor J5 BDM Charging Cradle Cradle Power Board J6 PCMCIA radio card J1 1 0 panel DC input J7 Button pad J2 Cradle interconnect board 10 conductor J8 Battery pack J4 Cradle interconnect board 3 conductor J9 Pump bleed valve Radio Card J10 Dump valve flex Antenna J11 Speaker P2 Power USB flex Service Manual Disassembly and reassembly 29 Procedures Removing the lithium ion battery assembly n onanan anaran 29 Replacing the air filter seisis ris ee da i na e eee 30 Separating the top and bottom chassis halves o o oooooo oo o 31 Disassembling the top chassis 00 000000 e eee eee 34 Removing the main board from the b
64. tery Removin assembly on pag Insert another mo imeout reoccurs replace the g the lithium ion battery e 29 nitor and battery pack in the cradle and verify yes then replace hat the symptoms persist If the cradle power board Disassembling the cradle on page 47 12 Troubleshooting and repair Welch Allyn Propaq LT Vital Signs Monitor Symptom Possible cause Possible corrective action Monitor fails to power up beyond the Button board not connected initial screen Connect the button board to the main board Separating the top and bottom chassis halves on page 31 Monitor is in the cradle and does not The battery is discharged and power up and the cradle power the cradle is not powering the indicator is off monitor Verify that AC power is on that the power adapter is plugged into AC power and into the cradle and that the monitor is fully seated in the cradle Defective power adapter Replace the power adapter The charger input fuse is blown Replace the fuse Replacing the fuse on page 47 Monitor is latched in the cradle but Open the monitor power switch does not power up Power indicator on the cradle is on Replace the bottom chassis which includes the power switch Removing the main board from the bottom chassis assembly on page 36 Problem with the cradle power board Replace the cradle power board Disassembl
65. tor Try a different NIBP hose or replace the O ring Deficient NIBP check valve bleed valve or overpressure valve NIBP tubing not properly connected Replace the valve Removing the NIBP assembly from the main board on page 41 Connect the internal tubing Removing the NIBP assembly from the main board on page 41 Equipment Alert NIBP Fault Air leak Check hose f hoses and external fittings are not leaking internal tubing might be disconnected Connect the internal tubing Removing the NIBP assembly from the main board on page 41 Repeated occurrence of NIBP Fault Air leak Check hose nternal tubing is disconnected Connect the internal tubing Removing the NIBP assembly from the main board on page 41 nternal tubing is damaged Replace the damaged section of internal tubing Removing the NIBP assembly from the main board on page 41 Equipment Alert NIBP Fault Kinked or neonate hose f the correct hose is connected and not kinked then the internal ubing might be blocked Verfify that the internal in line NIBP pneumatic components are properly installed with no pinching or kinking of tubing Removing the NIBP assembly from the main board on page 41 Equipment Alert NIBP Fault Overpressure condition Equipment Alert NIBP Fault Calibrating Please wait
66. ty Any service not performed at a Welch Allyn service center voids the product warranty Note Do not attempt to replace any component including the NIBP pressure transducers soldered onto the main board All service of the main board must be performed at the Welch Allyn factory service center Service Action Replace the NIBP air filter Replace the battery pack Replace the connector panel Replace Replace Replace cable an Replace he LCD assembly he top case assembly with button board and window he bottom case assy with power switch power flex d connector panel he NIBP pump bleed and dump valves check valve or internal tubing Update the software Replace the main board Replacing the air filter on page 30 Removing the lithium on battery assembly on page 29 1 Removi bottom 2 Functio 1 2 3 Functio 1 2 Functio 1 Removi chassis 2 Functio 1 Removi board 2 Charac 3 Functio ng the patient connector panel from the chassis on page 45 nal verification on page 55 Disassembling the top chassis on page 34 Set LCD bias on page 23 nal verification on page 55 Disassembling the top chassis on page 34 nal verification on page 55 ng the main board from the bottom assembly on page 36 nal verification on page 55 ng the NIBP assembly from the main on page 41 erize N
67. ues for each supply are within the ranges shown on the screen D Navigate to Service gt Display gt Pixel Test and press twice 7 Using the navigation arrows cycle through the six colors on each screen half verifying that all pixels are displayed in all colors and with uniform accuracy and brightness 8 Press to exit the Pixel test 9 Go to the Buttons test and press twice 10 Push each button and verify that all button presses are shown 11 Press and simultaneously to exit the Buttons test 12 Navigate to Service gt Battery gt Battery Info 13 Verify that the charger state is 8 14 Exit the Service menu 1 Connect a 5 lead ECG cable between the monitor and the ECG simulator Set the simulator for Lead II normal sinus 80 bpm 1 mv Press E as needed to view a waveform display Gr IN Highlight Il and press to the display the Waveform Source drop down menu Service Manual Respiration 10 12 Nn oOo ao F Ww MN Functional verification 59 Adult RmEDZ Lead il gt 6 sec Lead III aVR aVL aVF v Resp SpO2 Add 2nd Wave Highlight each ECG Lead I Il III and V and verify that for each one e a waveform is present e heart rate is 80 bpm 3 bpm Remove one lead and verify that the monitor displays an equipment alert identifying the failed lead Equipment Alert ECG Fault xx Lead failed Replace the lead and wait for the waveform to reappear Repe
68. verify that you have all tools and equipment needed and that you understand each step Characterize NIBP NIBP characterization sets the volume constants for the NIBP system to assure proper cuff detection You must characterize the NIBP system if any of the following occurs e Characterization test failure e Pump failure e Internal tubing replacement any or all e Bleed valve dump valve or check valve replacement e Main board replacement or repair A Caution Main board repair must be performed at the Welch Allyn Factory Service Center Any change to the main board requires system testing calibration and verification which can be done only at the Factory Service Center Caution Perform this characterization procedure only if you are prepared and equipped to perform the Characterization test on page 61 To complete this test you must have the 35 ml test syringe described in 35 ml test volume on page 73 1 Attach a neonatal hose 008 0265 XX to the monitor NIBP hose connector Verify that the hose length is 8 feet 4 inches 2 44 meters 10 cm 2 On the monitor navigate to the Characterize NIBP screen HR min Setup Service NIBP w Characterize NIBP HALL ROBERT E JBA aoe 12 41 32P Audible Ala nced Adult Rm Service NIBP ECG Sp02 USB Radio Software Display Battery Voltages Buttons NIBP Show Info Pump Test Characterize NIBP Characterize NIBP after service to any internal NIBP components

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