Vital Signs Monitor 300 Series Service Manual
ii Welch Allyn Vital Signs Monitor 300 Series © 2011 Welch Allyn. All rights are reserved. To support the intended use of the product described in this publication, the purchaser of the 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.
Service Manual Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 General safety considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Electrostatic discharge (ESD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv Welch Allyn Vital Signs Monitor 300 Series
1 1 Safety All personnel must read and understand all safety information presented in this manual before using or repairing the monitor. Caution Use only the Welch Allyn Monitor Service Utility (810-1784-XX) with this monitor. Software service tools, such as the “Custom Repair Software” (part number 130S29E), distributed for use with previous models of the Vital Signs Monitor, must not be used with the Model 300 Series.
2 Safety Welch Allyn Vital Signs Monitor 300 Series • A monitor that has been dropped or otherwise damaged or abused must not be used until it has been tested and verified by qualified service personnel for proper operation. • If the monitor detects an unrecoverable problem, an error code and a brief message appear in the message display. Report all such errors to Welch Allyn. • While under warranty, the monitor must be serviced only by a Welch Allyn service technician.
Service manual Safety 3 Symbols The symbols illustrated on the following pages appear on the monitor or in this document. Documentation symbols WARNING Indicates conditions that could lead to illness, injury, or death. Caution In this manual, indicates conditions that could damage equipment or other property. Caution On the product, means “Consult accompanying documentation.
4 Safety Welch Allyn Vital Signs Monitor 300 Series Printer door label Press to open the printer door Load paper this direction The monitor front panel controls are described in more detail throughout this document. Front panel controls Set alarm limits Power on/off Silence alarms Print patient data Scroll up/down, Scroll forward/back, Increase/decrease value Review patient data (The scroll icon appears as these two arrows in the documentation.
5 2 Service overview Purpose and scope This service manual is a reference for periodic preventive maintenance and corrective service procedures for the Vital Signs Monitor 300 Series. Corrective service is supported to the level of field-replaceable units. These include some circuit-board assemblies and some subassemblies, case parts, and other parts. (See “Replacement parts” on page 87 for a complete list of user-replaceable service parts.
6 Service overview Welch Allyn VSM 300 Series Returning 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.
Service manual Service overview 7 Recommended service intervals Interval or Condition Action Recommended Procedure Page Every 6 - 24 months (per hospital protocols) Complete functional test Functional verification 9 Battery does not hold a charge Check battery capacity Replace battery Functional verification Disassembly procedure 9 55 Monitor has been dropped or otherwise damaged Complete functional test Functional verification 9 Monitor malfunctioning Complete functional test Functional
8 Service overview Welch Allyn VSM 300 Series The monitor runs a self-test and then displays the main software version number (M: X.XX.XX). Press repeatedly to cycle to the menu selection of interest. /min SYS SpO2 % DIA (mmHg) 3 seconds Main SW version M: X.XX.XX RESET TO DEFAULT YES SERVICE MODE Power-up Self-test NO NIBP SW version N:XX.XX.XX BP CYCLES:XXXXXX RUN TIME:XXXXX POWER OFF Exit Service Mode BATTERY:X.XX V NIBP TEST SpO2 SW version S:X.X.X.X Temperature SW version T:X.
9 3 Functional verification Functional verification overview This section describes the procedure for a complete functional test to support recommended preventive-maintenance schedules. The verification includes tests for a monitor configured with the printer, temperature, and SpO2 options. Perform only the tests applicable to the actual configuration. A checklist of the functional tests is provided on “Checklist and test results report form” on page 31.
10 Functional verification Welch Allyn VSM 300 Series Welch Allyn accessories and test equipment Order number Description 06138-000 Temperature test key (for testing the monitor only) 01802-110, 110 V 01802-220, 220 V 9600 Plus Calibration Tester (for testing the monitor and the temperature probe) 008-0265-XX Neonatal cuff hose, 96-inch 008-0620-XX Neonatal #1 cuff, disposable, box of 10 020-0702-XX Cuff simulator (or equivalent 500 cc test volume) 5200-101A DC power adapter 407590 Battery
Service manual Functional verification 11 Functional verification procedure Reference illustration Fahrenheit Celsius Systolic window Print patient data Diastolic window /min SYS Adult Pediatric Neonatal Change settings SpO2 % Monitored temperature Increase/Decrease Forward/Back Battery charged Battery charging Battery low DIA Message window Power On/Off Review patient data Set NIBP interval Start/ stop NIBP Set alarm limits Silence alarms System/power Note Other than the optional NIBP
12 Functional verification Note Welch Allyn VSM 300 Series Depending on the charge level of the battery, the charge LED may be either flashing or steady. flashing indicates that the monitor is running on AC, the battery is charging, and the battery is charged to less than 90% capacity. steady indicates that the monitor is running on AC, the battery may or may not be charging, and the battery is charged to at least 90% capacity. Battery substitution cable setup 1. Disconnect the power adapter. 2.
Service manual Functional verification 13 e. Do not return the probe to the probe well. 2. If the SpO2 option is present: a. Verify that the SpO2 sensor cable is connected to the monitor. b. Verify that the current draw from the bench power supply is less than 800 mA. 3. Disconnect the SpO2 sensor (if equipped). 4. Insert the temperature probe (if the monitor is so equipped) into the probe well. Baseline current draw 1. With the monitor powered on, wait for the monitor LEDs to blank.
14 Functional verification Welch Allyn VSM 300 Series NIBP Note The tests described in this section are to be performed only as part of a complete functional verification procedure. Characterization test 1. Attach a neonate hose (part 008-0265-01) to the NIBP fitting on the monitor. 2. Prepare the 60-mL syringe as follows, with reference to the illustration below: a. Move the syringe plunger to the 35 mL line. b.
Service manual Functional verification 15 Leak test This tests the NIBP system for abnormal leakage. If the NIBP system is leaking, check for leaks in the external plumbing before opening the case to look for internal leaks. If you determine that any NIBP module component is causing abnormal leakage, you must replace the NIBP module before returning the monitor to clinical use. Caution Do not attempt component-level repair of the NIBP module.
16 Functional verification Welch Allyn VSM 300 Series 7. Press several times to select 0 mmHg (0 kPa). The valve opens to release pressure. 8. Disconnect the neonate cuff. Pressure calibration verification This tests pressure readings on the monitor against a calibrated external pressure meter. 1. Put the monitor in Service mode: a. Power the monitor off. b. Power the monitor on while pressing . WARNING Do not connect the monitor to a patient while the monitor is in Service mode.
Service manual Functional verification 17 4. Press once to select 80 mmHg (10.7 kPa). The cuff quickly inflates to approximately 80 mmHg (10.7 kPa), and then settles at a slightly lower pressure level. Wait a few seconds for the pressure to stabilize. 5. Verify that the value displayed in SYS is within 3 mmHg (0.4 kPa) of the value displayed on the digital pressure meter. 6. Press to select 150 mmHg (20 kPa) target pressure.
18 Functional verification Welch Allyn VSM 300 Series 2. Press once to select 80 mmHg (10.7 kPa). 3. Wait for the pump to start and stop. 4. Press once to select 150 mmHg (20 kPa). 5. Wait for the pump to start and stop. 6. Bleed the pressure to 0 by opening the relief valve on the bulb. 7. Close the relief valve on the bulb. 8. Have a timer ready. 9. Press once to select 300 mmHg (40 kPa), and immediately observe the manometer. 10. As soon as the manometer reads 5 mmHg (0.67 kPa), start the timer.
Service manual Functional verification 19 2. Turn on the monitor. 3. Set the monitor to ADULT mode. a. Press b. Press once. repeatedly until ADULT appears. 4. Set the inflation target pressure to 270 mmHg (36 kPa). a. Press repeatedly until TARGET PRESSURE appears in the display window. b. Press repeatedly as needed to set the target pressure (displayed in the SYS window) to 270 mmHg (36 kPa). 5. Press to start the pump.
20 Functional verification Welch Allyn VSM 300 Series When the overpressure cutoff triggers, the pump stops, the dump and bleed valves open, and the monitor displays E40. Any subsequent button press shuts off the monitor. Note Due to NIBP implementation differences, this test does not verify overpressure cutoff in earlier NIBP versions.
Service manual Functional verification 21 Printer Note This test is to be performed only as part of a complete functional verification procedure. 1. Put the monitor into Service Mode. 2. Verify that the printer has paper. 3. Press . Verify that a settings report prints, and that it contains no printed anomalies and no missing or faded sections. Note With a new roll of paper, the first line might be faded. This does not indicate a problem.
22 Functional verification Welch Allyn VSM 300 Series
Service manual Functional verification 23 SpO2 Note The tests described in this section are to be performed only as part of a complete functional verification procedure. Perform one of the following three SpO2 tests. Testing the monitor only (Nellcor SpO2) Use this procedure to test only the monitor SpO2 function. 1. Power the monitor off. 2. Connect the Nellcor SRC-MAX SpO2 functional tester to the SpO2 input connector through a Nellcor DEC-8 extension cable. 3. Power the monitor on.
24 Functional verification Welch Allyn VSM 300 Series Testing the sensor with the monitor Use this procedure to test the monitor SpO2 function while verifying a sensor. 1. Connect an SpO2 sensor to the simulator optical finger and to the monitor. 2. Set the BioTek Index2 SpO2 simulator as follows: SpO2 manufacturer type Nellcor (MP-506A or Nell-3A) Masimo (MS-11) % SpO2 94 Rate 60 (Motion Artifact not selected) 3. Wait for the monitor display to stabilize. 4.
Service manual Functional verification 25 Temperature Note The tests described in this section are to be performed only as part of a complete functional verification procedure. Perform one of the following temperature tests. Testing the monitor only Use this procedure to test only the temperature function. 1. With monitor power on and with the temperature probe in the well, disconnect the probe cable from the temperature input connector on the rear of the unit. 2.
26 Functional verification Welch Allyn VSM 300 Series 6. Verify that the reading displayed on the monitor is as follows: Model Temperature 9600 106.0 °F ±0.4 °F (41.1 °C ±0.2 °C) 9600 Plus 105.8 °F ±0.4 °F (41.0 °C ±0.2 °C) 7. Remove the probe from the tester and replace it in the probe well. 8. Disconnect the tester.
Service manual Functional verification 27 Nurse call Note The tests described in this section are to be performed only as part of a complete functional verification procedure. Relay verification With reference to the drawing and table below, use an ohmmeter to check the contact resistance at the output pins of the Nurse Call connector, while the monitor is in the alarm state and while the monitor is out of the alarm state.
28 Functional verification Welch Allyn VSM 300 Series Battery Note This test is to be performed only as part of a complete functional verification procedure. 1. With the monitor power off, disconnect the battery substitution-cable connector. 2. Install and connect the battery. 3. Connect the AC power adapter to the monitor. 4. Verify that the AC mains indicator is illuminated on the monitor front panel. The indicator could be flashing or steady, depending on the state of the battery.
Service manual Functional verification 29 The patient isolation test requires an AC Withstand voltage high potential (hi-pot) tester, such as the AR 3605 or equivalent. If this equipment is not available, Welch Allyn can perform the patient isolation test for you quickly, for a nominal fee. WARNING The patient isolation test involves exposure to extremely high voltages, and is therefore extremely hazardous. WARNING Always follow the tester manufacturer’s operation instructions exactly.
30 Functional verification Welch Allyn VSM 300 Series 2. Connect the hi-pot DC input test cable between the return jack on the tester and the DC input connector of the monitor. 3. Test isolation between the Nurse Call and DC input: a. Connect the hi-pot Nurse Call test cable between the nurse call connector and the high-voltage jack on the hi-pot tester. b. Press the test button to run the AC withstand voltage test. c. Verify that the monitor passed the test. (If the input current never exceeds 2.
Service manual Functional verification 31 Checklist and test results report form Use a copy of this form to track your progress through the functional verification.
32 Functional verification Welch Allyn VSM 300 Series Here is an example of verification results for a typical monitor. Pass (or N/A) Test Battery charging Power-on self-test Beeper Monitor-off current Init/idle current Baseline current Battery voltage NIBP characterization test NIBP verification Pressure leakage Pressure accuracy Valve/pump current Inflation Deflation Max allowable cuff pressure Adult (280 [37.3]) Pediatric (200 [26.
33 4 Troubleshooting and repair Troubleshooting chart This troubleshooting chart includes error codes related to possible internal failures. Based on the observed symptom, perform suggested actions one at a time from top to bottom. To reduce repair costs, determine whether the symptom still exists, by performing the device functional verification after each action. If other error codes appear, refer to the directions for use for information on the cause and suggested remedy for those errors.
34 Troubleshooting and repair Welch Allyn VSM 300 Series Symptom Possible cause Suggested action Repeated C07 error code. Incompatible SpO2 sensor. Improperly connected SpO2 sensor. Faulty SpO2 sensor. Faulty SpO2 board. Use a compatible sensor. Properly connect the sensor cable. Replace the sensor. Replace the SpO2 board. Repeated C20 temperature error code. Probe well is not installed in the probe-well housing. Faulty probe. Faulty temperature board.
Service manual Troubleshooting and repair Symptom Possible cause Suggested action Missing LED display. LED failure on the display board. Replace the display board. Erroneous LCD characters. LCD partially connected. Fully connect the LCD to the main board. Buttons on the right side of Screws attaching the display Tighten the screws. the monitor require noticeably board to the front panel are loose. Do not exceed 4 in-lbs. more pressure to actuate.
36 Troubleshooting and repair Welch Allyn VSM 300 Series Requirements for module-level repair and replacement Note All repairs to a monitor under warranty must be performed at an authorized Welch Allyn service center. Activity Recommended action Update the software Use the VSM Service Utility (810-1784-XX). Replace the main board Return the monitor to an authorized service center. Replace the NIBP module. Replacement procedure beginning on page 55.
Service manual Troubleshooting and repair 37 Welch Allyn monitor service utility Overview The Welch Allyn Monitor Service Utility is a software tool for use, with the VSM 300 Series service manual, by biomedical technicians, clinical engineers, and other qualified service personnel, to update and repair VSM 300 Series monitors.
38 Troubleshooting and repair Welch Allyn VSM 300 Series Required equipment 810-1784-xx Vital Signs Monitor 300 Series Software Upgrade Tool CD-ROM 008-0842-xx Vital Signs Monitor 300 Series serial cable PC with the following: • • • • • • • Windows XP SP2 or Windows 2000 SP4 operating system Intel Pentium IV CPU, or equivalent 256 MB RAM memory CD-ROM drive At least 20 MB available hard-disk space Available printer Available RS-232 serial communications port, 9-pin, D-style (If no RS-232 port is availab
Service manual Troubleshooting and repair 39 The default utility installation is into: C:\Program Files\Welch Allyn\Service Tool\VSM 300. To set up the utility 1. Connect the AC power adapter to the monitor. (Do not turn the monitor on.) 2. Connect the RJ-45 connector on the serial cable to the monitor. 3. If you are not using a USB-to-serial adapter, skip to step 8. 4. Follow the USB-to-serial adapter manufacturer’s instructions to load the USB drivers. 5.
40 Troubleshooting and repair Note Welch Allyn VSM 300 Series If Log I/O to file is enabled, the utility captures all communications between the VSM and the utility in the file io.log. This file continues to grow until the communications link is broken, because the utility is continuously checking for the presence of the VSM. The utility overwrites io.log each time the service utility is started.
Service manual Troubleshooting and repair 41 To configure to a different COM port 1. Right-click on the port you want. 2. Select Properties. 3. Select Port Settings. 4. Click Advanced. 5. Select a new COM Port Number. The port settings for the Keyspan adapter are explained in the documentation included with the device. Keyspan provides an assistant to configure and diagnose the USB-toserial adapter. Access the assistant from Port Settings in the Device Properties dialog.
42 Troubleshooting and repair Welch Allyn VSM 300 Series To characterize NIBP 1. Select Characterize NIBP. The utility displays the message "Choose Start to begin characterization". 2. Click Start, and follow the on-screen instructions. The utility attempts to place the monitor in the correct state for characterization: • The monitor is turned off. • The monitor, operating on charger power, supports communication between the utility and the NIBP module. 3.
Service manual Troubleshooting and repair • 43 The Debug Log lists the most recent warning conditions that have occurred, up to the maximum log size. When the Event and Debug Logs reach maximum size, new data overwrites the oldest. • The Calibration & User Log provides the following categories of information: • • • • calibration user-configuration run-time and cycle count software versions of all modules Note Large log files can take several minutes to load.
44 Troubleshooting and repair Event Log Debug Log Welch Allyn VSM 300 Series
Service manual Troubleshooting and repair 45 Cal & User Logs Update Monitor Software The Update Monitor tab displays installed (Installed Ver) and available (Update Ver) versions for the Monitor Boot, Main, and NIBP module software. If the monitor has an optional SpO2 or temperature module, the firmware versions are displayed. Update status is shown for each, indicating whether an update is available for those versions that can be updated.
46 Troubleshooting and repair Welch Allyn VSM 300 Series Update the Monitor Caution If the update is interrupted, the VSM monitor might be left in an unusable state. To minimize the possibility of interruption during the update: • Do not run other applications on the PC during this process. • Do not disconnect the monitor from the AC power adapter or the computer until Finished is clicked and Update Monitor has been refreshed.
Service manual Troubleshooting and repair 47 If updates are available, Update Status is either “Update required” or “Update Recommended”. 1. Connect the monitor to the AC power adapter and to the PC. 2. Start the utility. 3. Select Update Monitor. 4. To start a software update, click Update. The monitor reboots and proceeds with all available updates, beginning with the Monitor Boot. During the update process, the monitor reboots as needed.
48 Troubleshooting and repair Welch Allyn VSM 300 Series 5. When the software upload is complete, the Update Status and Upload Status messages display “Success”. Click Finish to cause the service tool to query the monitor and retrieve the newly installed monitor versions. Caution Do not disconnect the monitor from the AC adapter and the computer before the utility completes the query for the new software version. During the query, Update Status displays "working...".
Service manual Troubleshooting and repair 49 6. The service utility writes a log file detailing the update. By default, the log file is saved to the same directory the program was installed to. The file name is the word “update_” and the monitor serial number. • To view the file without printing, click Print, right-click on the file, and select Open. • To print the file, click Print, select the file, click Open, select a printer, and click Print.
50 Troubleshooting and repair Welch Allyn VSM 300 Series Monitor HW0Not updatableCompatible -----------------------------------------------------------------------UPDATE LOG -----------------------------------------------------------------------March 15 2007 11:32:33 Monitor Main:1.20.00 Success March 15 2007 11:32:34 cmdSetVSM3ValidVersionPoem:03.20.00 Success March 15 2007 11:32:34 cmdSetVSM3ValidVersionSpo2:1.9.0.1 Success March 15 2007 11:32:34 cmdSetVSM3ValidVersionTemp:1.
Service manual Troubleshooting and repair 51 1. After a hardware module has been replaced with a new version, run the service utility to accept the new configuration. To accept the new firmware, click Update. The dialog box opens as shown in the screen shot below. 2. Determine whether to update the software. • To accept the updated module and update the software, select Yes. Update Monitor shows an update available for the software.
52 Troubleshooting and repair Welch Allyn VSM 300 Series Here, the monitor has been reset to accept the temperature module with firmware version 1.2. Notice that the Upgrade Status message displays “Update recommended”. In step 2, No was selected to accept the new temperature module without updating any software. Here, the monitor has been reset to accept the temperature module with firmware version 1.2. Notice the Upgrade Status message “Up to date”.
Service manual Troubleshooting and repair 53 In this screen, the NIBP module has been replaced with a POEM2 NIBP module. Before the VSM can use the POEM2 NIBP module, the service utility must update the VSM with the new configuration. In this case, the NIBP module already contains the latest software, so no software updates are needed. When the compatibility fields have been set, the VSM is ready to use.
54 Troubleshooting and repair Welch Allyn VSM 300 Series
55 5 Disassembly procedure Procedures overview These procedures cover monitor disassembly and board removal. Unless otherwise noted, the assembly procedure is the reverse of the disassembly procedure. WARNING Electrical shock hazard. The battery can deliver currents sufficient to cause serious personal injury and to damage the monitor. When opening the monitor for any reason, always remove and disconnect the battery immediately, before proceeding with disassembly.
56 Disassembly procedure Welch Allyn VSM 300 Series Connectors Caution All connectors are keyed or coded to facilitate proper connection. Take care to correctly align all connector halves before attempting to connect them. Connector types The procedures described below require you to disconnect and reconnect ZIF (zeroinsertion force) connectors, squeeze-release connectors, and pressure connectors.
Service manual Disassembly procedure Order of disconnection Main-board Connector Connects With Main-board Connector Connects With 1 J2 External DC Input 7 J8 * Printer data – CN3 2 J1 External RS-232 8 J10 * Printer power – CN1 3 J6 LCD 9 J3 Battery 4 J5 Display board – J1 10 J9 NIBP board 5 J12 * Temperature board – J1 11 J7 * SpO2 board – J2 6 J4 Nurse call connector 12 J11 Speaker (* Denotes optional hardware.
58 Disassembly procedure J1 Welch Allyn VSM 300 Series Main board – J12 J5 External Probe Remove and disconnect the battery 1. Remove the four screws securing the battery door. Four screws securing the battery door 2. Remove the battery door. 3. Slide the battery out of the battery compartment. This might require lightly shaking the monitor. 4. Disconnect the battery from the monitor.
Service manual Disassembly procedure 59 Separate the front and rear chassis 1. Remove the three screws securing the rear chassis. Housing Screws 2. Place the unit upright, with the front of the unit facing you. 3. Tilt the top of the front chassis away from the rear chassis while lifting the front chassis, freeing the front chassis from the corner tab feature on the bottom left-hand corner of the rear chassis.
60 Disassembly procedure Welch Allyn VSM 300 Series 5. Disconnect the display-board flex cable (J5) from the main board. Disconnect the display-board flex cable from the main board (J5). Slide the outer piece of the connector toward the cable to release the cable; then slide the cable out of the connector. Disassemble the front chassis assembly The front chassis assembly contains the display board, keypad, and NIBP air fitting. 1. Remove the five screws securing the display board.
Service manual Disassembly procedure 61 5 screws securing the LED display board 2. Lift out the display board. 3. Remove the keypad. Printer button Reassembly notes If you are replacing the keypad and your monitor does not include the thermal printer option, the Printer button must be removed from the keypad before you reinstall the keypad. To remove the Printer button, cut the membrane connecting the button to the keypad. (Note the circled area in the illustration below.
62 Disassembly procedure Welch Allyn VSM 300 Series Printer button Remove the LCD display from the main board Disconnect the LCD display module from connector J6 on the main board
Main board Display module LED Foam tape Cable tie mount Cable tie Pump and tubing NIBP cable Foam tape Speaker Speaker gasket NIBP module Rear plastic housing Foam tape Power cable Feet Nurse call cable Battery door Battery Service manual Disassembly procedure Disassemble the rear chassis assembly 63
64 Disassembly procedure Welch Allyn VSM 300 Series Remove the main board 1. Disconnect the temperature module flex cable from J12 on the main board. Temperature module flex cable Main board J12 connector Unlatch the ZIF connector before removing or inserting the flex cable 2. Remove the four screws securing the main board to the rear chassis.
Service manual Disassembly procedure 65 Four screws securing the main board 3. Pull the lower right corner of the main board away from the rear chassis, just far enough to free the RS232 connector housing on the main board from the RS232 connector slot on the rear chassis. Rear chassis RS232 connector slot on the rear chassis RS232 connector housing on the main board Lower right-hand corner of the main board 4.
66 Disassembly procedure Welch Allyn VSM 300 Series Order of disconnection Main-board Connector Connects With Main-board Connector Connects With 1 J4 Nurse call connector 5 J9 NIBP board 2 J8 * Printer data – CN3 6 J7 * SpO2 board – J2 3 J10 * Printer power – CN1 7 J11 Speaker 4 J3 Battery (* Denotes optional hardware.) 6. Remove the main board.
Service manual Disassembly procedure J3 cable connector properly aligned with the J3 connector on the main board. The cable connector is slotted on the top side. ...and the flanged side down. J3 cable connector properly aligned with the J3 connector on the main board. The cable connector has latching tabs on the bottom side. Newer main boards (versions 031-0150-03 and -04) The power connector is keyed to assure proper connection. Disassemble and remove the NIBP assembly 1.
68 Disassembly procedure Welch Allyn VSM 300 Series NIBP pump NIBP tubing connection points on the pump NIBP bleed valve NIBP dump valve NIBP tubing connection points on the manifold Note NIBP pump power connector POEM 1 NIBP modules use a flying NIBP pump power connector that is soldered to the board. POEM 2 NIBP modules use a standard connector on the board. POEM 1 POEM 2 d. Cut the tie-wrap to free the pump from the pump holder.
Service manual Disassembly procedure 69 b. Remove the NIBP module. NIBP reassembly notes WARNING You must characterize the NIPB module whenever you replace any NIBP component (pump, tubing, air filter, check valve, or NIBP module). WARNING If the NIBP module is not properly characterized, the pump could overinflate a neonatal cuff, which could be hazardous to neonatal patients. (See “NIBP characterization” on page 36.) The shorter tubing section contains the air filter.
70 Disassembly procedure • Welch Allyn VSM 300 Series Disconnect and remove the NIBP assembly. Note It is not necessary to remove the printer or the NIBP pump. 2. Remove the old speaker and gasket from the rear chassis by prying it loose. 3. Verify that all speaker gasket material is removed from the chassis molded plastic. Locate the cavity and clean it with isopropyl alcohol. 4. Obtain a new gasket (PN 600-0518-xx) and place on a flat, clean surface.
Service manual Disassembly procedure 71 Remove and disassemble the printer assembly Power cable Data cable Printer PCB Printer paper Printer frame Roller Printer door Printer mechanism 1. Remove the printer door. a. Open the printer door and remove the roll of printer paper. b. Push the printer door toward the rear of the monitor until it snaps out of the two support spindles on the printer frame.
72 Disassembly procedure Welch Allyn VSM 300 Series Spindles 2. Remove the printer assembly. Push the plastic legs of the printer assembly outward and pull the printer assembly forward to free it from the snap-in seating of the rear chassis bulkhead. Push the printer legs very slightly outward while pulling them toward you.
Service manual Disassembly procedure 73 Printer legs 3. Remove the printer subassembly (printer mechanism, printer well, printer board, and cables). a. Turn the printer assembly upside-down, and release the ZIF connector latches (CN2) on the printer board. Printer flex cable ZIF connector latches b. Disconnect the printer flex cable from CN2 on the printer board. c. Turn the printer assembly upright, remove the two screws securing the printer mechanism, and remove the printer mechanism.
74 Disassembly procedure Welch Allyn VSM 300 Series Two screws securing the printer mechanism Printer mechanism d. Turn the printer assembly upside-down. e. Remove the screw securing the printer board to the printer frame. f. If you are replacing the printer board, remove the cables from connectors CN1 and CN3 for use on the replacement board. One screw securing the printer board Printer reassembly notes 1.
Service manual Disassembly procedure 75 the housing and with the front of the board secured under the tab on the front of the housing. Printer board parallel with the surface of the printer housing. Printer board resting evenly on the housing standoffs. Printer board inserted under the retaining tab on the printer housing. 2.
76 Disassembly procedure Welch Allyn VSM 300 Series Paper guide and sensor reassembly The operator, while replacing the printer paper, can inadvertently push the paper guide and sensor out of the chassis, rendering the printer inoperable. Caution Do not disassemble the paper guide if it is properly attached to the printer chassis. Improper disassembly of the paper guide can damage it. To reassemble the paper guide and the sensor 1.
Service manual Disassembly procedure 77 Paper sensor cable Paper sensor Slot When properly aligned, the paper sensor is visible through the hole in the top of the paper guide. (Not shown.) 4. Position the outer pins in the outer notches of the printer chassis, with the retaining pins just above the inner slots of the chassis. 5. Rotate the paper guide such that the retaining pins slide into the inner slots and snap into place. The bottom of the paper guide is now flush with the printer mechanism. 6.
78 Disassembly procedure Welch Allyn VSM 300 Series Paper cradle Guide pin a. Align the guide pin on the chassis with the hole on the bottom of the printer. The paper guide and the paper cradle on the plastic chassis must be flush. b. Use the two screws to secure the printer to the chassis.
Service manual Disassembly procedure 79 Disassemble the temperature module Note Disassembly of the temperature module does NOT require removal of the main board. 1. Remove the temperature module from the monitor. a. Remove the two screws (located on the left side, inside the rear chassis) securing the module to the slots on the left side of the rear chassis. To prevent the module from dropping, hold it as you remove the screws. Temperature cable two screws securing the temperature module b.
80 Disassembly procedure Note Welch Allyn VSM 300 Series For older monitors where the temperature cable is routed through a ferrite bead on the rear chassis: If the temperature cable is pulled through the slot and out of the ferrite bead, it will be difficult to reroute the cable through the bead. To avoid this difficulty, ... Separate the temperature module housing from the rear chassis just far enough to enable you to release the temp cable from the ZIF connector. 2.
Service manual Disassembly procedure 81 Temperature cable connector slot Temperature cable connector d. Release the ZIF latches (J1) and disconnect the temperature cable. Note It is not necessary to remove the temperature probe-well housing when replacing the temperature module.
82 Disassembly procedure Welch Allyn VSM 300 Series Temperature module reassembly notes To install the temperature board in the module housing: 1. Square the circuit board in the housing to fit the probe-well receiver into the top of the outside housing. 2. Tilt the board and rotate it counterclockwise so that the temperature cable connector (J5) fits down into the connector slot in the housing. Disassemble the Nellcor SpO2 assembly 1.
Service manual Disassembly procedure 83 2. Remove the SpO2 board. a. Remove the two screws securing the board to the side panel. Two screws securing the SpO2 board to the SpO2 assembly b. Disconnect J1 and J2. Caution To avoid stressing and damaging the J1 flex cable, disconnect the cable by gripping the J1 flex-cable connector with pliers and separating the connector halves without stressing or otherwise putting any pressure on the flex cable itself.
84 Disassembly procedure Welch Allyn VSM 300 Series Grip with pliers here, and separate the J1 connector halves. Never pull directly on the cable itself. SpO2 reassembly notes (Nellcor) The J2 connector halves are keyed to prevent incorrect connection. However, to facilitate the connection, align the red line on the edge of the ribbon cable with pin 1 of the connector on the SpO2 board.
Service manual Disassembly procedure 85 Disassemble the Masimo SpO2 assembly 1. Remove the SpO2 assembly from the rear chassis and disassemble as follows: a. Remove the four screws (located on the inside of the rear chassis on the right side) that secure the SpO2 assembly to the rear chassis. Four screws securing the SpO2 assembly to the rear chassis b. Slide the SpO2 assembly out of the rear chassis. 2. Remove the SpO2 board and sensor flex cable assembly from the connector panel. a.
86 Disassembly procedure Welch Allyn VSM 300 Series d. Remove the three screws (C) securing the circuit board to the plastic chassis. e. Remove the two screws (D) securing the SpO2 sensor flex to the connector housing. f. Slide the SpO2 sensor flex cable assembly out of the rails on the connector housing. B D C A SpO2 reassembly notes (Masimo) 1. Place the SpO2 sensor flex into the connector housing and secure it with two screws (D). (Torque = 4 lbf-in.) 2.
87 6 Replacement parts This list includes field-replaceable service parts only. Use only accessories 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. Front case (standard configuration) Drawing Ref # Order number Description 1 031-0151-XX Display board LED 2 600-0495-XX Fitting, NIBP 3 620-0392-XX Retainer, NIBP fitting 4 620-0393-00 Screw, #4-20, .
88 Replacement parts Welch Allyn VSM 300 Series 5 4 1 6 3 2
Service manual Replacement parts 89 Rear case (standard configuration) Drawing Ref # Order number Description 1 020-0621-XX NIBP module , POEM2 (contains pump adapter cable) 2 031-0150-XX PCB assembly, main board VSM III 3 407560 4 600-0517-XX Pad, foot, urethane, .44” d, .2” h, black, qty 2 5 020-0753-XX Gasket and speaker assembly 6 620-0403-XX Cable tie, nylon, .14” X .
Welch Allyn VSM 300 Series 24 12 9 3 18 Replacement parts 8 17 11 2 6 7 15 18 10 1 5 19 18 4 20 14 90
Service manual Replacement parts NIBP pump and plumbing parts Drawing Ref # Order number Description 1 600-0179-XX Tubing, 1’, 0.125” I.D., 0.250 O.D.
92 Replacement parts Welch Allyn VSM 300 Series Temperature option Drawing Order number Description Ref # Notes 1 620-0394-XX Screw, #4-40, 3/4”, machine 2 630-0211-XX Outside housing, temperature module 3 630-0238-XX Inside panel, temperature module 4 620-0393-XX Screw, #4-20, 5/16”, thread-forming 5 21327-1000 PCB, temperature module 6 660-0230-XX Cable, flex, temperature main board 1, 9 2 5 4 6 1 3 4
Service manual Replacement parts 93 SpO2 option, Nellcor Drawing Ref # Order number Description Notes 1 010-0232-XX SpO2 connector panel assembly, Nellcor 2 031-0169-XX Board, SpO2, Nellcor 3A 3 620-0047-XX Screw, #6-32, 1/4”, machine 4 660-0233-XX Cable assembly, SpO2 main interface 2 3 1 4 Nellcor 1
94 Replacement parts Welch Allyn VSM 300 Series SpO2 option, Masimo Drawing Ref # Order number Description Notes 1 630-0278-XX SpO2 connector housing, VSMIII, Masimo, plastic 2 031-0160-XX SpO2 subassembly board, Masimo MS-11 3 620-0393-XX Screw, #4-20 X .
Service manual Replacement parts Printer option Drawing Ref # Order number Description 1 630-0213-XX Printer door without roller 2 630-0214-XX Frame, printer assembly 3 620-0149-XX Screw, printer door/roller 2-28 x 1/4” 4 620-0165-XX Screw, Plastite, 0.
96 Replacement parts Order number Welch Allyn VSM 300 Series Description Notes Labels 680-0085-XX Overlay, front panel, 53000, international 680-0079-XX Overlay, front panel, 5300P, international 680-0082-XX Overlay, front panel, 530T0, international 680-0083-XX Overlay, front panel, 530TP, international 680-0080-XX Overlay, front panel, 53N00, international 680-0081-XX Overlay, front panel, 53N0P, international 680-0084-XX Overlay, front panel, 53NT0, international 680-0071-XX Overlay,
Service manual Replacement parts Order number Description Notes Labels 714891 Label speaker, Caution VSM 300, Italian 714892 Label speaker, Caution VSM 300, Polish 714920 Label speaker, Caution VSM 300, Portuguese 714893 Label speaker, Caution VSM 300, Spanish 714895 Label speaker, Caution VSM 300, Swedish 97
98 Replacement parts Welch Allyn VSM 300 Series Order number Description Notes Special service tools 06138-000 Temperature test key (tests monitor only) 01802-110 9600 Plus Calibration Tester, 110 V (tests temperature probe and monitor) 01802-220 9600 Plus Calibration Tester, 220V (tests temperature probe and monitor) 020-0702-XX Fixture, cuff simulator assembly 407590 Battery substitution connector 810-1784-XX Welch Allyn monitor service utility application CDROM 020-0660-XX SW update CD
99 7 Updates and service bulletins DC power cable clamp Eventually, the DC power cord might disconnect from the power input connector on the back of the monitor. To prevent this, contact Welch Allyn and order part number 008-0895-XX, VSM 300 Series DC Power Cable Clamp. This item, which is provided at no cost, is a set of six cable clamps.
100 Updates and service bulletins Welch Allyn VSM 300 Series
Service Manual C characterization procedure 36 test 14 chart of screws 55 checklist 31 component-level repair voids warranty 5 configurations available 6 connectors 56 controls synopsis 4 CSA certification 3 D disassembling the front chassis half 60 disassembly procedure 55 displays synopsis 4 E earlier versions this manual does not apply 5 equipment 9 F field-replaceable unit 5 field-replaceable units 87 FRUs 87 functional verification 11 I indicators synopsis 4 interval between service 7 L list of s
102 returning products 6 return-material authorization 6 RMA 6 S screws 55 separating the chassis halves 59 service in warranty 7 service interval 7 service menu 7 service utility 37 services available 5 T technical support services 5 tools and equipment 9 trademarks ii troubleshooting 33 U utility 37 V verification 11 verification checklist 31 W warranty invalidation 5 Welch Allyn Vital Signs Monitor 300 Series
