Welch Allyn Spot Vital Signs Service Manual
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Welch Allyn Spot Vital Signs Service Manual

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Spot Vital Signs
PN 95P506E
Copyright 2001

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Summary of Contents for Welch Allyn Spot Vital Signs

  • Page 1 Manuals Operator Manual Service Manual Spot Vital Signs PN 95P506E Copyright 2001...
  • Page 2 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Spot Vital Signs Service Manual Page 2 of 64...

  • Page 3: Revision History

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Revision History Version Date Author Description 3/31/01 Introduction of Service Manual Page 3 of 64...

  • Page 4: Table Of Contents

    Section 5.7 Pneumatic Tests ........................53 Section 5.8 SpO2 Tests........................54 Section 5.9 Temperature Tests......................55 Section 5.10 Fail Safe Testing ......................56 Section 5.11 Check List For Spot Vital Signs Service Work ..............57 Section 6 Drawings ..........................59 Section 7 Repair Test Specifications......................60 Page 4 of 64...

  • Page 5: S E C T I O N 1 G E N E R A L I N F O R M A T I O N

    Welch Allyn, Inc. Welch Allyn assumes no responsibility for any errors that may appear in this manual. If the product and/or its operation varies significantly from any description herein, please contact the following: WELCH ALLYN,, INC.

  • Page 6: Limited Warranty

    Revision A 1.2 Limited Warranty Welch Allyn, Inc. warrants the Spot Vital Signs, when new, to be free of defects in material and workmanship and to perform in accordance with manufacturer's specifications for a period of two years from the date of purchase from Welch Allyn, Inc. or its authorized distributors or agents.
  • Page 7 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Before returning a product for repair you must obtain authorization from Welch Allyn, Inc. An RMA (Return Material Authorization) number will be given to you by our service personnel. Be sure to note this number on the outside of your shipping box.

  • Page 8: Basic System Description

    The Welch Allyn Spot Vital Signs is not intended for continuous monitoring of patients, or for use during transport of a patient. The Welch Allyn Spot Vital Signs is not intended for use in environments that are not supervised by a health care practitioner.

  • Page 9: Basic System Operation

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 1.4 Basic System Operation Blood Pressure Measurements A single blood pressure determination is made when the blood pressure START/STOP button is pushed. A measurement cycle may be cancelled at any time by pressing the BP START/STOP button again.
  • Page 10 Max/Min Temperature Ranges Temperature Normal Mode In Normal Mode, the Spot Vital Signs will measure temperature at discrete intervals and then calculate the rate of change according to a proven algorithm. This allows the thermometer to predict the end point that the thermistor would reach if it were left in the mouth until it reached mouth temperature.
  • Page 11 The pulse signal bar graph is an indicator of the strength and quality of the detected pulses. * The Spot Vital Signs is capable of determining pulse rate as an adjunct to the blood pressure measurement and the SpO2 measurement.
  • Page 12 Revision A Pulse Rate Feature The Welch Allyn Spot Vital Signs is capable of determining pulse rate as an adjunct to the blood pressure measurement and the SpO2 measurement. The pulse rate, in beats per minute, will be determined primarily from the SpO2 measurement methodology. In the case where SpO2 is not available, or is disabled, the pulse rate display will be derived by data from the blood pressure measurement method.

  • Page 13: Specifications

    The performance specifications of the Spot Vital Signs are as follows: Patient Population The Welch Allyn Spot Vital Signs is designed for use with adult and pediatric patients. Welch Allyn defines a pediatric patient as 29 days old and above. THE SPOT VITAL SIGNS IS NOT INTENDED FOR USE WITH NEONATES.
  • Page 14 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Overpressure Cutoff 315 mmHg ±15 mmHg Temperature Ranges Temperature Accuracy Temperature accuracy meets or exceeds ASTM E112-86: "Standard Specification for Electronic Thermometer for Intermittent Determination of Patient Temperature." Temperature Determination Time...

  • Page 15: Environmental Specifications

    A fully charged battery will support 150"typical" blood pressure determinations taken at 7 minute intervals. Battery is 90-100% charged after 6-12 hours of charging. The battery automatically charges when the Spot Vital Signs is powered through the AC power transformer. The battery will charge faster when the instrument is not in operation.

  • Page 16: Identification Label And Serial Numbering System Defined

    Revision A 1.6 Identification Label and Serial Numbering System Defined The identification label for the 420 Series Spot Vital Signs is shown below. It is located on the bottom of the unit. The serial number for the device would consist of nine (9) numbers and a bar code. These would be located in the square below the words “420 Series.”...

  • Page 17: Firmware Identification

    Revision A 1.7 Firmware Identification To confirm the software levels of the 420 Series Spot Vital Signs, place the unit into the “Configuration Test” mode by holding down the Start button while the unit is being powered up. The main software versions will appear as follows: * In the SW1 Screen, the top two numbers is the software version of the Spot Module and the other numbers are for the SpO2 module (if installed).

  • Page 18: S E C T I O N 2 S E R V I C E

    This manual provides technical service and re-calibration information to technicians authorized to repair and recalibrate Welch Allyn, Inc. products. When used in conjunction with the required test equipment and tools, technicians will be able to diagnose, repair, and recalibrate, and test the Spot Vital Signs.

  • Page 19: Test Equipment Bench Layout

    To the Spot Vital Signs To Bulb and Valve Nellcor Diatek PC, IBM Comp. 486 Patient Calibrator 133 MHz, 8 Mb RAM Simulator 9600 Windows 95 OS SRC-2 FIGURE 2.2 BENCH LAYOUT FOR RE-CALIBRATING AND TESTING SPOT VITAL SIGNS Page 19 of 64...

  • Page 20: Required Tools And Fixtures For Service

    NETECH METER 200-2000IN Notes: The entire set of equipment listed above can be ordered through Welch Allyn by the following number: Eleckit A Setra Meter (2270-01) or a Netech Meter (200-2000 IN) must to be ordered along with the Eleckit.

  • Page 21: Required Tools And Fixtures For Service

    2.4 Required Tools and Fixtures for Service The following equipment is need for service/repair and can not be obtained from Welch Allyn, Inc. - IBM compatible 486 133 MHz computer or better. The computer must have Windows 95 with a serial port.

  • Page 22: Replacement Parts

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 2.5-Replacement Parts : Drawing Number Part # Description Reference* 421100-502 Main PCB 421030 Flex Cable; Main to Display 421023-501 Pump Sub-assembly 421045 IR Window 421020-501 Display Module 421002-501 Battery Assembly...
  • Page 23 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 5200-15 Small Adult (one piece cuff and connector) 5200-16 Adult (one piece cuff and connector 5200-17 Lg. Adult (one piece cuff and connector) 5200-18 Extra Large Adult (one piece cuff and connector)
  • Page 24 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A D-20 OXISENSOR II Pediatric Oxygen Transducer (case of 24) ® I-20 OXISENSOR II Infant Digit Oxygen Transducer (case of 24) ® R-15 OXISENSOR II Adult Nasal Oxygen Transducer (case of 24) ®...

  • Page 25: Maintenance And Service Support

    Note: Welch Allyn, Inc. recommends that the calibration of the Spot Vital Signs be checked on a yearly basis for BP, Temperature and SpO2 (if applicable).

  • Page 26: Section 3 Problem Diagnosis

    Section 3 Problem Diagnosis 3.1 Diagnostic Procedure for Returned Units NOTES: A. The word “unit” in this text refers to the Spot Vital Signs. B. “Menu|Choice” represents menu commands. Rather than use the phrase “choose the exit command from the File menu.”...
  • Page 27 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Press the “start” button to close the valve. Pump up the unit using the bulb and valve inflate the unit to 250 mmHg. Confirm the unit meets the specification for leak called out in the Repair Test Specification document.
  • Page 28 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 10. FOR THE COMMUNICATION OPTION: Select Tools|Options to insure that the communication port that the cable is connected to is selected. Select “test” and ensure that the Spot Device responds accordingly. If an error is present, ensure that there is no obstacles in the way of the IR window and re-try the test.

  • Page 29: Calibration Procedure : Voltage

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 3.2 Calibration Procedure : Voltage VOLTAGE CALIBRATION 1. Connect the unit to the test station by hooking up the pneumatic tubing, and removing the battery and connecting the power supply. Ensure that there are no obstacles in the way of the IR window.

  • Page 30: Calibration Procedure : Pressure

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 3.3 Calibration Procedure : Pressure PRESSURE CALIBRATION 1. Connect the unit to the test station by hooking up the pneumatic tubing, removing the battery and connecting the power supply. Ensure that there are no obstacles in the way of the IR window.

  • Page 31: Self Diagnostic Fault Codes

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 3.4 SELF DIAGNOSTIC FAULT CODES The following is a list of all possible error codes and there meanings. MAIN BOARD/BLOOD PRESSURE ERROR CODES ERROR CODE DESCRIPTION Auto-Zero Failure Inflation Too Rapid...
  • Page 32 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A TEMPERATURE BOARD ERROR CODES ERROR CODE DESCRIPTION E0.1 Probe Heater Accumulator E0.2 Probe A/D Pulse Width Error E0.3 Adaptive Probe Gain too High or Low Show “A” in Temperature display. Flash Up arrow.

  • Page 33: Complaint / Cause / Corrective Action

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 3.5 COMPLAINT / CAUSE / CORRECTIVE ACTION Troubleshooting: General Guide To Problems And Corrective Actions QUICK GUIDE TO TAKING A MANUAL (AUSCULTATORY) BLOOD PRESSURE Action: 1. Collect appropriate equipment. Use a certified accurate sphygmomanometer and quality stethoscope.
  • Page 34 One of the major sources of error in auscultatory blood pressure measurement is deflating the cuff too quickly. It is a normal operation of the Welch Allyn Spot Vital Signs to deflate at the American Heart Association recommended 3 mmHg per second.
  • Page 35 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Page 35 of 64...
  • Page 36 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Page 36 of 64...
  • Page 37 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Page 37 of 64...
  • Page 38 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Page 38 of 64...

  • Page 39: Section 4 Removal/Replacement Of Parts

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 4 Removal/Replacement of Parts 4.1 Battery 1. Lay unit face down on the test bench 2. Remove the 4 Phillips head screws holding the battery cover/handle to the unit using T112918 with the #4 Phillips bit.

  • Page 40: Temperature Pod And Temperature Connector Pcb Removal

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 4.2 Temperature Pod and Temperature Connector PCB removal 1. Lay unit face down on the test bench 2. Remove the 4 Phillips head screws holding the battery cover/handle to the unit using T112918 with the #4 Phillips bit (T112919).

  • Page 41: Front Housing And Switch Array

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 4.3 Front Housing and Switch Array 1. Lay unit face down on the test bench 2. Remove the 4 Phillips head screws holding the battery cover/handle to the unit using T112918 with the #4 Phillips bit (T112919).

  • Page 42: Display Pcb

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 4.4 Display PCB 1. Lay unit face down on the test bench 2. Remove the 4 Phillips head screws holding the battery cover/handle to the unit using T112918 with the #4 Phillips bit (T112919).

  • Page 43: Remove Power And Battery Cable

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 4.5 Remove Power and Battery Cable 1. Lay unit face down on the test bench 2. Remove the 4 Phillips head screws holding the battery cover/handle to the unit using T112918 with the #4 Phillips bit (T112919).

  • Page 44: Main Pcb Removal

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 4.6 Main PCB Removal 1. Lay unit face down on the test bench 2. Remove the 4 Phillips head screws holding the battery cover/handle to the unit using T112918 with the #4 Phillips bit (T112919).

  • Page 45: Spo2 Pcb Removal (If Configured With Spo2)

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 4.7 SpO2 PCB Removal (If configured with SpO2) 1. Lay unit face down on the test bench 2. Remove the 4 Phillips head screws holding the battery cover/handle to the unit using T112918 with the #4 Phillips bit (T112919).

  • Page 46: Pump And Valve Removal

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A 4.8 Pump and Valve Removal 1. Lay unit face down on the test bench 2. Remove the 4 Phillips head screws holding the battery cover/handle to the unit using T112918 with the #4 Phillips bit (T112919).

  • Page 47: Section 5 Test Procedures

    Section 5.1 Calibration Tests ABSTRACT: The following are the test procedures for the Spot Vital Signs. We set this procedure up so that you can start at section 5.1 and go straight through the procedure or you can skip around.

  • Page 48: Section 5.2 Current Tests

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 5.2 Current Tests 1. Connect the unit to the test station by hooking up the pneumatic tubing, removing the battery and connecting the power supply. Ensure that there are no obstacles in the way of the IR window.

  • Page 49: Section 5.3 Noise Levels

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 5.3 Noise Levels 1. Connect the unit to the test station by hooking up the pneumatic tubing, removing the battery and connecting the power supply. Ensure that there are no obstacles in the way of the IR window.

  • Page 50: Section 5.4 Button Test

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 5.4 Button Test 1. Connect the unit to the test station by hooking up the pneumatic tubing, removing the battery and connecting the power supply. Ensure that there are no obstacles in the way of the IR window.

  • Page 51: Section 5.5 Interface Test

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 5.5 Interface Test 1. Connect the unit to the test station by hooking up the pneumatic tubing, removing the battery and connecting the power supply. Ensure that there are no obstacles in the way of the IR window.

  • Page 52: Section 5.6 Print Quality

    Ensure that there are no obstacles in the way of the IR window. 2. Ensure that you have the HP IR printer that work with the Spot Vital Signs. 3. Choose Test|Print Quality. Choose “test pattern 1.” The printer will print out a pattern of large and small ASCII characters.

  • Page 53: Section 5.7 Pneumatic Tests

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 5.7 Pneumatic Tests 1. Connect the unit to the test station by hooking up the pneumatic tubing, removing the battery and connecting the power supply. Ensure that there are no obstacles in the way of the IR window.

  • Page 54: Section 5.8 Spo2 Tests

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 5.8 SpO2 Tests 1. Connect the Nellcor SpO2 simulator (SRC2) to the unit with the test cable. 2. Ensure that the following are the settings of the simulator: a) Rate: 112...

  • Page 55: Section 5.9 Temperature Tests

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 5.9 Temperature Tests 1. Disconnect the temperature probe from the unit leaving the probe itself in its housing. Place the “CAL key” into the connector. Remove the probe from the housing. The temperature should read 97.3 F +/- .2 F.

  • Page 56: Section 5.10 Fail Safe Testing

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 5.10 Fail Safe Testing 1. Connect the unit to the test station by hooking up the pneumatic tubing, removing the battery and connecting the power supply. Ensure that there are no obstacles in the way of the IR window.

  • Page 57: Section 5.11 Check List For Spot Vital Signs Service Work

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 5.11 Check List For Spot Vital Signs Service Work General Data Repair Number Date Tech Unit SN Life Cycle Model Count Repair Data: Check all items repaired/replaced and record serial # where possible:...
  • Page 58 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Test Information Test Data Test Specifications Unit SW Version SpO2 SW Version Test Pressure @ 275 mmHg +/- 5 mmHg Unit pressure @ 275 mmHg +/- 3 mmHg Test Pressure @ 175 mmHg...

  • Page 59: Section 6 Drawings

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 6 Drawings • 6.1..Exploded view of Spot Vital Signs • 6.2..Electrical schematics Page 59 of 64...
  • Page 62 DRAWN DATE 100K WILL CUIPYLO Welch Allyn 09-06-00 THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN, INC. APPROVED DATE AND SHALL NOT BE REPRODUCED, OR COPIED, OR USED AS A BASIS FOR SALE OR KNUT SPANG 09-06-00 MANUFACTURE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION.
  • Page 63 14.7K 09-06-00 100pF PWM D/A MMBD1503A U13D 100pF THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN, INC. APPROVED DATE 64.0KHz AND SHALL NOT BE REPRODUCED, OR COPIED, OR USED AS A BASIS FOR SALE OR KNUT SPANG 09-06-00 MANUFACTURE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION.
  • Page 64 DATE WILL CUIPYLO Welch Allyn R355 09-06-00 100K THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN, INC. APPROVED DATE AND SHALL NOT BE REPRODUCED, OR COPIED, OR USED AS A BASIS FOR SALE OR KNUT SPANG 09-06-00 MANUFACTURE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION.
  • Page 66                            *   7 8  6  6*  6*6 *+  6*6  6*6 *  *   6*6 *+ *    6*6   6* *66  6  6*6      ** *    *66  6*6  ) ...

  • Page 67: Repair Test Specifications

    Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A Section 7 Repair Test Specifications Repair Test Specifications Spot Vital Signs Original Date: 16 August 2000 Current Revision Date: 4 January 2001 Current Revision Number: 1.4 File: 126P182.DOC Copyright 2001 Welch Allyn Inc.
  • Page 68 Note 5: Unless otherwise stated, all calibrated volumes will be +/- 10cc of the stated volume. Note 6: Unit software for the Spot Vital Signs will be equal to or greater than “1.00” for “Spot” software (SW 1) and equal to or greater than “1.00” for ModB software (SW2). If the unit has Nellcor SpO2, the SpO2 software will be equal to or greater than “1.2.0.0.”...
  • Page 69 Unit memory. Pneumatic Accuracy Test Note: This test will be conducted in the configuration mode of the Spot Vital Signs. Perform Autozero before the start of this test. The Pneumatic Accuracy test is defined as the comparison of the Unit pressure measurement and applied pressure at 0, 50, 175, and 275.
  • Page 70 (36.3C) using a Cal Key (5200-25).The unit must be able to read a temperature of 96.4F (35.8C) and a temperature of 106F (41.1C) within +/- 0.3F (+/-0.2C) using a Welch Allyn 9600 Calibrator. Note: if using a water bath to take temperatures, the temperature of the bath should be between 84F and 106F (28.8 and 41.1C)and the reading must agree within +/-1.0F (0.8C) measuring against a temperature standard that is accurate to...
  • Page 71 Welch Allyn, Inc. Spot Vital Signs Service Manual Revision A SpO2 Mode Current Test The SpO2 Mode Current Test is defined as the amount of current, less the Blank Mode Current, that is drawn through the battery terminals, placing the Unit in the Blank Mode, actuating the SpO2 mode and applying any SpO2 signal to the Unit.

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