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Service Manual Spot Vital Signs

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3. 3 d U323 414 C331 MAX861 zl 047uF MOUNTING HOLE Q _SPO2RES MH305 CAP C327 100uF C329 C301 1000PF 10uF MOUNTING HOLE CAP 4 a MH304 MOUNTING HOLE C302 MH301 m ouk SPIO2 Q TPS7350QPWR NZ DRAWN DATE WILL CUIPYLO R pass L 09 06 00 elc n APPROVED DATE THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC KNUT SPANG SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR SALE OR 09 06 00 MANUFACTURE OF EQUIPMENT OR DEVICES WTHOUT WRITTEN PERMISSION REL TO PRODUCTION 09 27 00 SPOT CHECK MAIN PCB aM Size DWG NO Rev R5 100K SPO2B Q13 MMBT3904 REVISION DESCRIPTION INIT DATE 4 3 2 DESCRIPTION ECN ECO INIT DATE CKD RELEASE TO PROD ENG 41550 3 ss REVISED 060 MAX DIM AMT41550 14 REMOVE B O M TABLE 41550 15 D IR IR 5 C 060 MAX NOTE 7 _ 1 534 REF 6 SECTION IR IR ASSEMBLY TO CONFORM TO THE LATEST REVISION OF 610 CLASS 2 USED STANDARDS FOR ELECTRONIC ASSEMBLIES UNLESS OTHERWISE SPECIFIED REWORK DRAWN DATE
4. 60 Page 4 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Section 1 General Information 1 1 To Service Personnel Read and understand the Spot Vital Signs Operators Manual and this Service Manual The information contained in both of these publications is subject to change without notice and should not be construed as a commitment by 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 TECHNICAL SERVICE DEPARTMENT 1 800 450 9275 828 684 4895 Fax 828 687 1002 Welch Allyn Inc 95 Old Shoals Road Arden North Carolina 28704 This product has been designed to provide a high degree of safety and reliability However we can not guarantee against deterioration of components due to aging normal wear tampering and abuse service and repairs must be performed by authorized Welch Allyn personnel or agents using approved Welch Allyn replacement parts and approved process materials Failure to so will invalidate the product warranty Please refer to the product warranty for specific coverage Welch Allyn Inc 95 Old Shoals Road Arden North Carolina 28704 USA 800 450 9275 Page 5 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 1 2 Limited Warranty Welch Allyn Inc warra
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6. 4200 84 Lead Acid Battery 4200 85E Operator Manual 421054 1E Quick Reference Card 4200 145E Service Manual 4200 100 Welch Allyn Spot Vital Signs Carrying Case 5200 101A AC Power Transformer desktop transformer line cord not included North American Version 5200 102A AC Power Transformer desktop transformer line cord not included European Version 5200 103A AC Power Transformer desktop transformer line cord not included United Kingdom Version 4200 110 Line Cord United States Canada Japan version 4200 111 Line Cord European version 4200 112 Line Cord United Kingdom version 4200 113 Line Cord Australian version Page 24 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 2 7 Maintenance and Service Support Owner Maintenance Non Technical customers can perform normal maintenance per the instructions provided in the Operator s Manual End users will be able to perform basic operations such as replacement of hoses cuffs probes and batteries On this level the unit will not be opened except for the battery housing Opening of the Spot Vital Signs by untrained individuals will damage the unit and void the warranty Technical Service Repair Re calibration Properly trained and equipped bio medical departments and service centers will be able to utilize the content of this Service Manual Technical skills in electronics and PC skills are required These departments and centers must have service
7. IS ACCEPTABLE IF IT CONFORMS TO THE LATEST REVISION OF IPC R 700C WELCH ALLYN ASSEMBLY PART NUMBER T WAWRO 9 2670 7 J HOWARD 9 26 00 DATE CODE WEEK YEAR eg 2200 4 PACKAGING TO BE APPROVED BY WELCH ALLYN D ORQUE SCRE Wise TO CLE Jong 3958 s 6 SENSORS TO BE BOTTOMED IN PROBE HOUSING 177 NO REV TRIM LEADS OF ITEM 4 91 AND ITEM 5 DI TO DIMENSION SHOWN 421105 C 005 INCHES ANGLES 2 SCALE 2 000 SHEET cef 2 DESCRIPTION INIT DATE APPROVAL RELEASE TO PRODUCTION AMT41550 3 09 27 00 SPANG CONNECTION TO J1 OF SPOT MAIN PCB TEMP PROBE SOCKET EDAC 10 PAT PROBE 1 PROBE O0 4 PRBGND PRBD DOOANDOABRWN 4 TEMPERATURE POD RIBBON CABLE CONNECTOR PROBE_LED_ON PAT PROBE SW D1 Q1 236703 LED N 236704 PHOTO NPN PRBSWGND DRAWN DATE WILL CUIPYLO n APPROVED DATE THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC KNUT SPANG SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR SALE OR 09 27 00 MANUFACTURE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION REL TO PRODUCTION DATE TITLE JERRY HOWARD 09 27 00 SPOT CHECK TEMPERATURE POD PCB Size DWG NO REY REVISI
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9. Reference section 4 6 page 44 Change the display PCB Reference section 4 4 page 42 If the unit does power up 4 To check the display PCB observe the unit during power up All of the LCD segments should be lit for 1 2 seconds before the unit gets to its normal mode If the unit has any LCD segments out change the display PCB Reference section 4 4 page 42 5 Run a couple of blood pressure cycles to insure proper inflation deflation and readings 6 If the unit is not inflating deflating properly A Open up the unit by removing the 4 housing screws B Check the unit for pinched tubing if the unit is deflating too slow With the housing opened re run the blood pressure cycle to see if the deflating problem has been fix Re route tubing if pinch is found C Ifthere are no pinched tubes change the valve Reference section 4 8 page 46 D Power down the unit Place unit into configuration test mode by holding down the start button as power is re applied Press the mode button until appears in at the top of the LCD window Page 26 of 64 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 If the unit is leaking E Pinch off the tubing leading to the pump If this stops the leak
10. manual and re calibration software repair tools and test equipment as listed in this manual 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 25 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 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 MenulChoice represents menu commands Rather than use the phrase choose the exit command from the File menu Remove the battery from the unit Connect the unit to the power supply Set the power supply to 6 5 Vdc 0 2 Vdc 2 With a digital multi meter check the voltage of the battery If the voltage of the battery is less than 6 0 Vdc the battery needs to be charged Up on completion of this procedure place the battery back into the unit and plug up the charger Let the battery charge for 8 hours Next allow the unit to set for 1 day and recheck the battery voltage If the voltage is below 6 0 Vdc change the battery Reference section 4 1 page 39 3 Power up the unit If the unit does not power up A Insure the power supply is on and has the correct requirements as called out for in the repair manual The power supply is connected to the unit and turned on Check that the fuse is not blown Reference section 4 6 page 44 Change the main PCB
11. 10K R31 U9B R29 100 REPLACE C52 WITH 0 OHM JUMPER 51 1K 5234 NED ess 909 FOR PNEUTRONICS VALVE 42V 42VREF 15MM 0 1uF 1 R32 VALVEAC SI9945DY 12 1K SHIELD_HOLE SHIELD_HOLE 3 e R83 1 1VAS SH1 SH5 R95 110 33 s2VDIV 5 7 li C19 95 R14 1K SH2 SH6 MMBD1503A ER LM385M VALVEHOLD vA C21 R38 047uF 1K R37 100K SH3 SH7 C20 NZ 0 01uF Q2A MOUNTING HOLE SI9945DY NZ uM SH4 SH8 Bui 5 SH11 SH10 SHIELD_HOLE R34 Batt Sense ENT Temp sva SHI SH16 Q2B BAT SENSE SH9 SH12 C51 FAIL 4 SI9945DY 047uF TEMP SENSOR 10mV C Temp C 500mV SHIELD HOLE CK SH14 SH13 A D Mux AMUX AMX 1 AMUX A2 AMX A2 4 Shi el d AMUX A3 AMX __ 6 TP3 RXDO D3 C16 R39 1K 13 Module TXDO lt TXDO R40 1K 7 LM50B 0 14 E lt gt MUX c22 ces c24 MES PWM A D 8 2 100pFY 100pFM 100 EE Converter AUTO AUTO 2 lt TID PROBE SW lt gt 2064 X PROBE SW 1VA 2 4VA O OQ OQ STRANS 5 J308 BATT BATTIN lt b BATGND BATTIN Primary XDCR and DC Offset 5 CHGIN BATGND 4VA CHGND CHGIN gt CHGND TEMP gt 5VA R42 5VA2 MUX_OUT 0 10K 1 Primary R43 R97 5VA C26 Transducer 3 83K ES 1M 047 56 2 C27 10K OmmHG 0 5V P1 2 OUT PUE Comparator 300mmHG 4 0V mr 2224 E 14V 0 4 lt X VA C29 Comp 6
12. 88 j5 SPO2 CHGND 177 9 1 CHGND gt Raag 5 CONTROL D308 R337 100K 5VS LED ANODE 1513 316 CHG 10MQ100N 100K o ED CATHODE14 9 4 FERRITE LCD 13 9 0320 2c 5 LCD 1246 L319 LM2941 PRINT LCD 11 o FERRITE 8 5 MODE LCD 10 5 75 LCD 9 49 jo POWER LCD 8 z9 ICD 7 VREG EN 6 Ex Q 22 C320 RCAL 4 0 22V 2 C323 INV C339 C321 C322 9 D LCD 3p 3 047uF o Q304 047uF 100uF 0 01uF 1b DB9_9 AVV bercronANop gt 9 C340 C341 C342 SI DB9 6 DETECTOR ANODE d BAT 0 01uF 1000PF 1000PF eb DB9 1 c RCAL RETURN 6 6 0 MMBT3904 0305 6 R383 LCD BUTTONS S DB9 3 1 AAA 5 qs E LCDRIBBON L320 5 8 301 1340 9 ha FERRITE 0 8 C337 SPO2 2 II 047uF 0313 1 6402 1303 FASTG ON POWER R379 BSS138 SPO2 BOARD L305 SHIELD SPO2 DB9 Q306 TPS7350QPWR 2K AN L308 MMBT3904 TO DB9 L310 FASTB RST BL_REF L334 L343 1335 R344 C336 680uH 4 64K D310 Q307 R380 FERRITE MMBT3904 047uF 100 BL_ANODE MMBD1204 MMBD1204 OFFB AUTO lt AUTO Q308 MMBT3904 R350 100K R336 SPARE 10K U324B BP MODULE CONNECTION R382 180mA peak LM393 1 OHM U324 180 2 1 33mW D311 032400 E R381 10MQ100N 10K BACKLIGHT SPOT SECTION o 2 SPOT MOUNTING HOLES
13. L3 CUT HERE 1K HTBO Q10 HTRC2 PRBHTR PRBHT FOR CAL IHTRC lt lt AAAS 5087 T Yi 4 R115 C70 5VA 0 01uF 160mA a PROBES goa 16042 2 7 71mW 1 PROBE WARMER REC 0 1 CAL 1 0 U22C NOPROBE 1 1 047uF NE5234 fae PRBD B1 B1 1 RESPIN 6 A1 PIN 2 B2 GND B2 A2 5 A2 PROBE 0 PIN 4 PROBE 1 PIN 3 B3 B3 A3 R79 133K U22B PROBE NE5234 CONNECTOR TOP VIEW R81 133K gt gt STRANS DRAWN DATE WILL CUIPYLO 09 600 Welch Allyn APPROVED DATE ITHESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC KNUT SPANG SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR SALE OR 09 06 00 MANUFACTURE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION REL TO PRODUCTION DATE TITLE REL TO PRODUCTION 09 27 00 SPOT CHECK MAIN PCB die Eee dim Size DWG NO Rev REVISION DESCRIPTION INIT DATE APPRV Copyright Wednesday February 28 2001 D 421102 Sheet 1 of 3 B DESCRIPTION INIT DATE APPROVAL awrarssos wno A RELEASE TO PRODUCTION 09 27 00 KNUT SPANG CHANGE C57 TO tuF Eao ub AME R99 are 12 19
14. P16 C28 047uF 047uF P1 C30 41VA XFPM 050KPG P1 edu a U318 U9D 5234 4 OPA353NA A R46 WY PTRANS SUM C53 CONVERTING 1K 4 PTRANS Integrator 680pF 5 PWM_ADC NIBP_PWM_ADC gt gt PTRANS ae 5VA 0 3 48K INT OUT x 74HC00 Offset R48 Zero Adjust 237K NE5234 C50 20mmHg R50 047uF range 93 1K INT FB C31 PWM A D R51 B R52 R53 TUE ROLY Converter jd 1K 4 300K 000 NIBP FF R54 9 NIBP OFFSET DAC NIBP NIBP NIBP F 1K pa NIBP NIBP ADC CLOCK CK 10 0 Hitachi pin 95 74HC00 C32 74HCO00 PRECHG 0 1uF C33 DRAWN DATE 0 1uF WILL CUIPYLO 100 C35 MMBD1503A 03 06 00 eic n p D A 100pF DATE ITHESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC 64 0KHz APPROVED KNUT SPANG AND SHALL NOT BE REPRODUCED OR COPIED OR USEDAS A BASIS FOR SALE OR 09 06 00 MANUFACTURE OF EQUIPMENT OR DEVICES WTHOUT WRITTEN PERMISSION 74HC00 REL TO PRODUCTION DATE TITLE REL TO PRODUCTION gt 09 27 00 SPOT CHECK MAIN PCB REVISION DESCRIPTION INIT DATE APPRV Size DWG NO Rev Copyright Wednesday February 28 2001 D 421102 Sheet 2 of 3 B DESCRIPTION INIT DATE APPROVAL R301 100K 5VS A RELEASE TO PRODUCTION AMT41550 3 09 27 00 KNUT SPANG 0 R303 100K 5 8 ADD R99 51550 25 12 19 00 GNDD BONE Q811 GN
15. T112917 with the 10 Torx bit 18 19 20 Lift Main PCB from housing and aside Remove the pneumatic tubing from the valve and the pump Remove the valve and the pump from their respected location on the rear housings and aside Reassemble in reverse order End of Section 4 8 Page 46 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 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 However you must do all of the test called out in this section before a unit can be returned to field service NOTES A The word unit in this text refers to the Spot Vital Signs B represents menu commands Rather than use the phrase choose the Exit command from the File menu 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 2 Place the unit into the configuration test mode by holding down the start button while powering up the unit Allow the software versions to be displayed then press the mode button until the unit displays CAL in the LCD window The unit will automatically perform a auto zero once CAL is displayed 3 Attach a pne
16. The Amencan Heart Association recommends deflation no faster than 3 mmHg per second Only use a sphygmomanometer that is known to be in cali bration Blood pressure taken with an uncalibrated sphygmomanometer may be very inaccurate Check blood pressure immediately pror to Welch Allyn Spot Check Device Reading Use higher quality stethoscope Have a dilterent observer check patient s blood pressure Page 35 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A SYMPTOM Cuff Inflation amp Deflation with No Blood Pressure Reading Dis played or error code in display Possible Cause Explanations and Corrective action Leak in pneumatic system Ensure all cuff attachments are tight Carefully check for tubeng leaks in blood pressure cuff and tubing attached to the device Arm movement dunng cycle Keep arm still during blood pressure cycle movement may cause inaccuracies from artifact Tubing movement artifact Do not contact tubing dunng blood pressure cycle e movement may cause inaccuracies from artifact SYMPTOM No Cuff inflation Possible Cause Explanations and Corrective action Connections between device and cuff Check all connections Do not over bghten loose SYMPTOM Temperature Malfunction POSSIBLE CAUSE EXPLANATION AND CORRECTIVE ACTION Error Code Displayed Broken probe Replace probe Consult Technical Manual Notify Biomedical department Welch Allyn Tech nic
17. Torx Screws from the temperature pod using T112917 with the 10 Torx bit T114030 Roll temperature pod toward top of the unit and place on test bench Unplug the flex cable from the temperature connector PCB and aside the temperature pod Remove the 4 Phillips head screws using T112918 with the 4 Phillips bit T112919 If equipped with SpO2 remove and aside the SpO2 cable clip Remove the tubing from the front housing and aside housing 11 12 13 Gently lift the LCD module from its post Roll the LCD to the left and set on the bench beside the Spot unit Remove the flex cable from the LCD and aside the display Reassemble in reverse order End of Section 4 4 Page 42 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Que 10 Gently lift the LCD module from its post 12 13 14 15 16 LA 4 5 Remove Power and Battery Cable Lay unit face down on the test bench Remove the 4 Phillips head screws holding the battery cover handle to the unit using T112918 with the 4 Phillips bit T112919 Lift handle cover and aside Lift battery from housing and disconnect the Molex connector Remove 3 10 Torx Screws from the temperature pod using T112917 with the 10 Torx bit T114030 Roll temperature pod toward top of the unit and place on test bench Unplug the flex cable from the temperature connector PCB and aside the temperature pod Remove the 4 Phillips head screws
18. change the pump Reference section 4 8 page 46 F Pinch off the tubing leading to the valve If this stops the leak change the valve Reference section 4 8 page 46 G Pinch off the tubing leading to the transducer If this stops the leak change the Main PCB Reference section 4 6 page 44 7 If the unit is inflating deflating properly however there is no reading given change out the main PCB Reference section 4 6 page 44 8 FOR THE SPO2 OPTION Connect the patient simulator to the unit SpO2 connection by the Nellcor SpO2 cable Confirm readings equal to the specifications called out in the Repair Test Specifications document If there is no reading change out the SpO2 PCB Reference section 4 7 page 45 9 FOR THE TEMPERATURE OPTION Remove the temperature probe and view the temperature window the display Make sure the temperature is in the monitor mode This will be displayed at the bottom of the window If the unit is not in monitor mode wait approximately 40 60 seconds and the unit will automatically transfer into the monitor mode Using the Diatek 9600 calibrator set at 96 4 F 35 8 C or using a water bath between 84 F and 106 F place the probe into the small hole on top of the 9600 calibrator or into bath If there is no reading place the probe back into its housing remove and retry If there is still no reading change the probe and retry the test If there is still no reading place the probe back into the housing u
19. either too large or too small will produce an inaccurate reading If the arm is not at the proper level inaccurate readings will result Page 33 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A c Clothing over the artery hinders the ability to hear and may cause inaccurate readings Tight clothing may cause vessel congestion and inaccurate readings d This places the cuff in the best position for occluding the blood flow through the brachial artery e Determines the most accurate location for assessment and approximation of systolic pressure f Facilitates identification of Phase One Korotkoff sounds g 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 h Follows AHA recommended standards i Diastolic blood pressure in children is the point at which the sound becomes muffled Page 34 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A SYMPTOM Inaccurate Blood Pressure Readings Please note Differences of up to 10mmHg should be considered normal and will occur for a number of reasons including intra patient BP variability observer hearing differences and auscul tatory deflation rate Possible Cause Incorrect cuff size Note Use Welch Allyn approved cuffs only Explanations a
20. measurement circuit will be calibrated at 5 5 0 2 0 The battery calibration factor must be 14 384 to 18 384 When the Unit battery measurement circuit is successfully calibrated a calibration signature will be stored in the Unit memory The calibration signature can be any of up to four printable characters Blank Mode Current Test The Blank Mode Current Test is defined as the amount of current that is drawn through the battery terminals all LCD segments are turned off the back light is off the SpO2 mode is turned off The limit is 200 mA max Back Light Idle Current Test The Back Light Current Test is defined as the amount of current that is drawn through the battery all LCD segments are turned on the back light turned on the SpO2 mode is turned off The limit is 400 mA Max Valve Pump Mode Current Test The Valve Pump Mode Current Test is defined as the amount of current that is drawn through the battery terminals the Unit is in the Blank Mode Unit valve and pump actuated to on The limit is 700 mA max IR Interface Tests The Unit will be able to communicate through the IR Port Opening the IR Port and successfully issuing a command with no errors returned will be sufficient to test the IR Interface Interface Test When given the proper commands the Spot Display will turn on all segments turn off all segments turn on the back light or turn off the back light When give the proper command the spot unit buzzer w
21. the Spot Vital Signs 500 CC Volume 250 CC Volume 100 CC Volum Current Setra Meter Or Netech Meter To black wire Connect To Power of the Spot Check E Device 2 Tubing 4 NH 15 Tubing Welch Allyn Spot Device 10 Tubing 3 Tubing 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 O SRC 2 FIGURE 2 2 BENCH LAYOUT FOR RE CALIBRATING AND TESTING SPOT VITAL SIGNS Page 19 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 2 3 Required Tools and Fixtures for Service Special tools below can be ordered from Welch Allyn Inc TOOL DESCRIPTION 100cc TEST VOLUME 00 TEST VOLUME DIGITAL TIMER PLIERS BULB AND VALVE WIRE CUTTERS TWEEZERS PNEUMATIC TUBING 3 ea FITTING FITTING 3 TEST CABLE IR PNEUMATIC CLAMPS 3 TORQUE SCREWDRIVER 4 PHILLIPS T10 TORX BIT 8 HEX SOCKET CABLE TIE TOOL DIATEK CAL KEY ERVICE MANUAL ETRA METER 0 10 PSIG NETECH METER number Eleckit 01 200 2000IN A Setra Meter 2270 01 or a Netech Meter 200 2000 IN must to be ordered along with the Eleckit ndividual equipment numbers can be ordered by themselves Page 20 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 2 4 Required Tools and Fixtures for Service The following equipment is need for service repair and can not b
22. using T112918 with the 4 Phillips bit T112919 If equipped with SpO2 remove and aside the SpO2 cable clip Remove the tubing from the front housing and aside housing Roll the LCD to the left and set on the bench beside the Spot unit Remove the flex cable from the LCD and aside the display Disconnect the power cable from the main PCB by pushing down on the tab and pulling toward the bottom of the unit Lift ferrite from it holder Using a T114135 3 8 Hex socket attached to T112918A remove the nut from the transformer connector and slide the cable through the rear housing opening Slide the battery connector out of the rear housing and aside the cable assembly Reassemble in reverse order End of Section 4 5 Page 43 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A DA M e 9o 10 11 12 15 16 17 18 19 4 6 Main Removal Lay unit face down the test bench Remove the 4 Phillips head screws holding the battery cover handle to the unit using T112918 with the 4 Phillips bit T112919 Lift handle cover and aside Lift battery from housing and disconnect the Molex connector Remove 3 10 Torx Screws from the temperature pod using T112917 with the 10 Torx bit T114030 Roll temperature pod toward top of the unit and place on test bench Unplug the flex cable from the temperature connector PCB and aside the temperature pod Remove the 4 Phillips head scr
23. when the instrument is not in operation Environmental Specifications Operating Temperature 10 to 40 Except temperature 16 to 40 C 50 F to 104 F Storage Temperature 20 C to 50 C 4 F to 122 F Relative Humidity 15 to 90 non condensing Operating Altitude 170m to 4877m 557ft to 16 000ft Page 15 of 64 Welch Allyn Inc Spot Vital Signs Service Manual 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 95 Old Shoals Road Arden NC 28704 USA ewes 0222 00 811 420 SERIES WelchAllyn i mmol 0050 103235 MAG REUS A 5 38 46 SOUTH STREET A n UL STD 2601 1 RYDALMERE PATENT 0 344 0392043 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 An example of the number and the explanation is shown below 200100001 The four digits on the left Are the year of manufacture of the device The five digits on the right are the sequence of build starting with 00001 annually The example number above would be the first unit built in 2001 Page 16 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 1 7 Firmware Identification To confirm the software levels of the 420 Series Spot Vital Signs place the
24. 00 e pupa 0 74 06 GNDD 4BAT X GNDD ANALOG VOLTAGE REGULATOR U1 DIQ c5 RESET PG 047uF L 8 5VA THIS MESS TIES 9 R119 10K GNDS TOGETHER SENSE FB R91 10K MUST BE AT TOP EN EB 5V LEFT ON EVERY GND Micro od R122 10K 9 PAGE THANKS C9 ORCAD TPS7250Q 10uF poc es PWM E 8 DO is pi MT m j BAT AD OUT 1 241 01 15 Address Decoding HTRC PB2 TP10 TIOCA4 P42 D2 20 52 KA SHOBB SUI DCLK BB PBS TP11 TIOCBA P43 D3 21 54 Dao S 2 4 PA4 D4 22 55 pai 31 52 2 52 45 22 06 01 S ps A 1203 4 R9 PB6 TP14 DREQO P46 D6 22 58 P 10 93 10 PB7 TP15 DREQ1 ADTRG P47 D7 PE DQ4 38 12 M 008 42 084 5587 PAO TPO TENDO TCLKA P31 D9 56 006 vrei pee PA1 TP1 TEND1 TCLKB P32 D10 pee DQ7 2 PA2 TP2 TIOCAO TCLKC P33 D11 20 512 008 EE p82 PA3 TP3 TIOCBO TCLKD P34 D12 21 512 DQ9 22 59 20 99 PA4 TP4 TIOCA1 A23 P35 D13 0010 pty R132 PA5 TP5 TIOCB1 A22 P36 D14 22 515 0011 EE 22 917 6 21 P37 D15 39 15 22 912 PA7 TP7 TIOCB2 A20 DQ13 38 51 4157 Pirai A 1 DQ15 MMBT3904 xi iea DIRES 9131 28 427 ROM 4 42VA ye DO Paid 40 257 ay IRD Q DCLKO 6 P93 RxD1 P15 A5 7HWR P94 SCKO IRO4 P16 A6 42 6 2 DCLK
25. 1 4 FLASH RESET 4 5 5 P17 A7 1 A 1 4 TAL VOLTAG EGULATOR R15 10K 2 MCU P20 A8 FN NC4 la7 ae MCU P70 ANO P21 A9 48 0 IPRINT X PRINT BOOTSTRAP Bi P24 A12 49 AM29F400BB 70EC TSOP48 d IDT71016 LONG FAL EANA P25 A13 Et EY a ee P214 157 9 5VA SS m DM paTiais S are Q PROBE D ON PROBE 1MOD P77 AN7 DA1 P50 A16 PEL PROBE 15 RET Toc P10 A0 51 17 AVref 52 18 R23 BAT C13 C14 aa ee 10K 10uF 047uF AVss RES 83 ICS3 1 4 y 015 FLASH RESET RESET POUCSSRQT CS2 85584 57 ai DEUS 7d ERIS IOS 1 51 IRQ3 STBY P83 CS1 bonum T PUMP VALVE DRIVE R87 137 1 64 POoANAIT 8 AMUX 1 1 0 C79 20 2 WAIT AMUX A2 AUTO MOD 047uF P61 BREQ 60 AMUX A3 H8 3042 62 2 lt HTRAS HWR D6 DRAIN LWR R133 MRA4003T3 EXTAL 66 XTAL 6 10K Analog Reference 2VREF 16 000 Mh XD OUT XD BASE 014 74 aK f TT SUR MMBT3906 10 AUTO 9 AUTO PUMP VALVE 5V 5VX zz E TT EEPROM 44VA C75 10PF Q 047uF 9 C15 C17 047uF 4 7uF C18 XD PS FB 5VA 5VA 047uF 2 78 10uF PUMP si9945DY DCLK BB a RXD1_BB RXD1_BBMOD 2 TXD1 BB R96 13 3K or R135
26. 15 EN b R125 EE D heces RSES L321 j f C B N E C36 D303 1027 ES a FIDE i 1052 Dep 025 FORM THE LATES EVISION OF pps qe CLASS 2 R CTRONIC ASSEMBLIES UNLESS OTHERWISE SPECIFIED REWORK COMPONENT POPULATIO CB ASSEMBLY TO BE IF IT CONFORMS TO THE LATEST REVISION OF IPC R 700C FORMATION E WG 501 mow E E YEAR EG 2200 5 DIGITS MIN DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC C APPROVED BY WE CH ALLYN HANDL NG AND PACKAG TO ALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR MANUFACTURE U E OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION TO ESD NOS ETC 2 lt gt O U IES SHALL BE TESI SPECIFICATI A si 3 DAT ION PLETION DRAWN el A3 J STROM VELEN A REL TO PROD DAT FINISH HOLES T EDMONDSON 9 26 sormmsE PR
27. 6 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 Disposable Monitor Style One Piece Blood Pressure Cuff 5082 93 3 Small Child Cuff 5082 94 3 Child Cuff white 5082 94P 3 Child Cuff print 5082 95 3 Small Adult Cuff 5082 96 3 Adult Cuff 5082 97 3 Large Adult Cuff 5082 98 3 Thigh Cuff Miscellaneous 5082 59 Cuff Adult 5082 61 Cuff Large Adult 5082 63 Cuff Child Print 5082 64 Cuff Thigh 5200 04 Bladder Adult includes connector 5200 05 Bladder Large Adult includes connector 5200 06 Bladder Child includes connector 5200 11 Bladder Thigh includes connector 5200 07 Coiled Pressure Hose 8ft 2 4M Note One additional hose may be connected to provide extended length All appropriate connectors are included 5200 12 Straight Pressure Hose 8ft 2 4M 5200 08 Calibration T Connector Temperature Accessories And Supplies 02678 100 Oral Probe 9ft 2 7M 02679 100 Rectal Probe 9ft 2 7M 05031 101 Disposable Probe Covers 1000 covers packaged 25 box 06137 000 Temperature Calibration key 01800 210 Model 9600 Temperature Calibration Kit 110v Nellcor Puritan Bennett Pulse Oximetry Accessories And Supplies DS 100A DURASENSOR Adult Oxygen Transducer EC 8 Extension Cable 8ft D YS DURA Y Oxygen Transducer 1 sensor 40 wraps D YSE Ear Clip use with Dura Y sensor D YSPD PediCheck Ped
28. 7 Section 2 Service rene o eene ed de eere eee ies 18 2 1 Intent of Manual and Product Scope 18 2 2 Test Equipment Bench L yo Ut te eterni exert irent ree ne tiene 19 2 3 Required Tools and Fixtures for Service 20 2 4 Required Tools and Fixtures for Service 21 2 5 Replacement Patts x RII AIDS rS EE REPE RESTE 22 2 6 Supplies and Accessories 22 2 7 Maintenance and Service 25 Section 3 Problemi Diagnosis eed eer ee pie 26 3 1 Diagnostic Procedure for Returned Units 26 3 2 Calibration Procedure Voltage ei ete e e eee EU e 29 3 3 Calibration Procedure 30 3 4 SELF DIAGNOSTIC FAULT 31 3 5 COMPLAINT CAUSE CORRECTIVE 33 Section 4 Removal Replacement of 39 4 39 4 2 Temperature Pod and Temperature Connector PCB removal 40 4 3 Front Housing and Switch 41 4 4 Display ue itte tete eet ett
29. AIL 410 Ut7C 4 FAIL FAIL2 021 74 00 FINI pm 14060B 74HC0 Wr PTRANS 7 74HC00 d 330mm LT v pg 3 BSS138 er MMBD1203 TVA RCAL_F gt gt RCAL_SEL 15 74HC02 TEMPERATURE POD o PAT RES L6 lt gt R66 R67 10 9 1K 10K C64 06 100 PAT PROBE 0 BSS1 R68 PROBE SW b PRBGND i mem F PAT PROBE 1 _ id 5 p PRBSWGND gt gt PTBCAL SEL 4 TEMP SENSE TR3 PRBD PROBE LED ON 14V 0 4j 1K 300 37MMHG 1b PAT PROBE SW C65 3 75V TR4 100pF 19 14V 0 4j OMM Q7 R69 BSS138 00 BOMM OUT c66 300MM REF U20B 0 01uF R70 6 17 13 3K C43 047uF 67 PROBE LED ON 2 100pF 100pF D IRLML6402 ME lr V NZ T T T PCLK This not populated in 678 30MM IN i RES Od pn Caraga OR tag jm O CLR LEAN D LC LLLA EL R72 R117 3 1K 1M PROBE CONNECTOR POD SENSE BE 1 i T PROBES PROBED Ad PROBE 0 PROBE C71 C72 01uF 0 01uF THERMISTO 017 MMBT3904 J1 B1 1K WELCH PROBE CONNECTIONS R108 1K JI A2 lt lt HTB Q8 BCX69 HTRPWRK PROBE R109 HTAMP HEATER D9 46 4K RESISTOR MMBD1203 R110 46 4K 2 urnas e CUT HERE IMEG R112 1K J1 B3 2 R113 2 46 4K HTEO HTB2 ag J1 A3 Secondary XDCR BCX69 L R114 Y R1
30. DD lt C305 300 ad 5087 047uF THIS MESS TIES o 5 8 GNDS TOGETHER CONFIGURATION MUST BE AT TOP R364 LEFT ON EVERY 00 40 74 1K PAGE THANKS D1 P41 ORCAD D2 P42 D3 P43 H8 3042 Salis 66 SPEXTAL D6 P46 0307 D7 P47 Y301 I 7 vec 147456Mhz 047UF D10 P32 SPXTAL SAI D11 P33 10 D1234 C312 C313 013 35 D15 P37 5VS 5VS 45VS 4 IDT71016 0 0 58 0 5VS 4 6 CLEA PBO TPS TIOCA3 C306 R359 R315 AO P10 PB1 TP9 TIOCB3 00k 1 11 PB2 TP10 TIOCA4 2 12 PB3 TP11 TIOCB4 bani p Tk 13 PB4 TP12 TOCXA4 TSTHIL 4 047uF 4 14 5 1 4 5 TS IR CLKO i A5 P15 PB6 TP14 DREQO 1 p T lt CLO 19 REAL TIME CLOCK 10K Z AG P16 PB7 TP15 DREQ1 ADTRG L328 74HC00 74 00 SE 20 17 U302A ES v 20 PAO TPO TENDO TCLKA PENNE A9 P21 PA1 TP1 TEND1 TCLKB CATO A10 P22 PA2 TP2 TIOCAO TCLKC SPEAKER A11 P23 PA3 TP3 TIOCBO TCLKD ae 12 24 PA4 TP4 TIOCA1 A23 A13 P25 1 22 MMBD1204 umm TOR A14 P26 PAG TP6 TIOCA2 A21 A15 P27 PA7 TP7 TIOCB2 A20 74HCO00 A16 P50 R318 17 51 P90 TXDO aK Gans A18 P52 P91 TXD1 19 53 P92 RXDO 220 MME T3904 EEPROM P93 RXD1 HW IRE P94 SCKO IRQ4 P95 SCK1 IRQ5 P80 RFSH IRQO 6 P81 CS3 IRQ1 7 IRDA aie inne P82 CS2 IRQ2 P71 AN1 MMBT3906 N
31. IRRX 047uF 100uF P83 CS1 IRQ3 P72 AN2 8 84 50 7 a HWIR P74 AN4 75 5 lt U317A Boe 9 HSDL 7000 5VS P77 AN7 DA1 z BREQ S HWIR MMBD1503A DQ5 P62 BACK RESET 208 MEMORY SELECTOR 006 RESO 7 SDL 3610 007 DQ7 CLK D30 D304 Dag NMI DQ10 U317B 6 DQ11 5VS 0912 uPROCESSOR 2 74 08 DQ14 R385 R316 A 1 DQ15 R358 100K 100K U317C 8 1M 02 0 BCODEGND di BCRX Pt 2 51 SEHALS3 4 IOEN SERIAL d 3 SPIN SERIALS 03170 B1 AAA IN 74HCO08 R367 10K L321 SERVICE PORT 2 R372 1K L322 R368 10K L323 AM29F400BB 70EC TSOP48 PROGRAM R370 10K L332 BAR CODE He SPOT MAIN SECTION t 2d SERVICE 5VS 10K 5VS 45VS 5VS 5VS 5VS 17 x 10K Sl 6 2 N 21 RXDO g fg l 8X08 R378 ha SPIO2 PO 10 Pin 6 low for Seimens 1317 F301 WE H E L302FERRITE p Pin 14 low for Nellcor FERRITE FUSE 5A SPO2DO anw SPO2 26 BATTIN TAA 2 BATFUSE PRINT o epe BATTIN 2 HARNAS K PRINT 52 tH pyg BATGND VCC LCD eS 2 2 1318 R322 ne i Xi gt gt SHSIN Higz20P171R 2207 rs 10k
32. Modulation High d RCAL Mode RCAL63 Local 3 Verify the reading of the unit meets requirements when compared to the Repair Test Specification 4 Reconnect the SpO2 sensor Place the sensor onto your finger The unit should return a reading if the sensor is OK End of Section 5 8 Page 54 of 64 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 Remove the cal key and reconnect the probe 2 Make sure that the unit s temperature option is in the monitor mode Do this by removing the probe from the housing and observing the temperature display Monitor mode should be seen in the lower right hand side of the display If this is not seen wait approximately 30 45 seconds and the unit will change mode to the monitor mode 3 Setup the Diatek 9600 calibrator Set the calibrator to 96 4 F or use a water bath between 84 F and 106 F Allow the calibrator to stabilize for three 3 minutes Place the probe into the small hole in the calibrator Observe the temperature display The reading should be 96 4 3 within 30 45 seconds 4 Place the probe back into the housing Set the calibrator to 106 F Allow the calibrator to stabilize for three minutes Remove the probe from the
33. OE MAIN ROM BEEPER UNLESS OTHERWISE SPECIFI DRAWING NO REV I MENSI TOLERANCES DIMENSIO 421100 B XXX INCHES ANGLES SCALE 2 SHEET of 6 5 4 3 2 DESCRIPTION INIT DATE APPROVAL A RELEASE TO PRODUCTION AMT41550 3 09 27 00 KNUT SPANG CHANGE C57 TO 1uF jos IEEE R99 meee 2 19 00 enoo Temperature Hardware 45V U23 Failsafes and Optional Populations ee 678 eee 7 PUMP PUMP 454 THIS MESS TIES 8 GNDS TOGETHER iene VREFTEMP MUST BE AT TOP dee LEFT ON EVERY 140608 PAGE THANKS C36 ORCAD GT 15MM a VREFTEMP 74HC02 is tus TEMPERATURE A D CONVERTER n R61 162K VREFTEMP Q4 C37 MMBT5087 VITRE EIER T E RET NE SE ERR MM Rr 0 01uF Pr 0 33uF POLY 15mm R99 1K C3 AD TRIGGER cs 74 02 p425 AD TRIGGER lt lt U24 5VA 100pF C61 TLC555CD 15 ovr 0 33uF Tantalum 0 01uF R7 5VA E SIRE 4 64K TRG AD DSCH 100K U20A 3 047uF MMBT2222A R102 R101 gt 15 DETECT 15MM IN U19A INFLATE FAIL 1K 1K 047uF 74HC74 ceo 3 C63 TOMMO R63 15 0 01uF 1000PF 100pF 11 9MMEG 100K LM393 RES RES C39 C40 9 R103 R104 100pF 047uF 27 oop 0 FAIL1 58 FAIL gt gt FAIL 12 1K 5VA 11 55K 0 05 F
34. ON DESCRIPTION INIT DATE Copyright Tuesday September 26 2000 B 421107 Sheet 1 of 1 A 2 3 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 rights reserved This information is considered proprietary and confidential Page 60 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A General Notes Note 1 The word Unit throughout this document refers to the Spot Vital Signs with out pneumatics tubing and cuff temperature probe SpO2 probe and main battery attached unless other wise noted Note 2 Standard test voltage unless otherwise stated is 6 5 0 0 25 Vdc Note 3 test are performed utilizing the Repair Software for the Spot Vital Signs or following the procedures called out in the Spot Service Manual 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 If the unit has temperature the temperature software will b
35. Over Pressure Tex 296mmHgi329mmHg OvrismmHgTes pO2 Simulator Reading 7 390 12 BPM 3 BPM pO2 sensor Reading O Temperature Calibration Reading 964 F 96 4 3 35 8 2 Temperature Calibration Reading 106 F I06F amp O3FGMICe 02C Temperature Key Reading 97369022 66365046 Page 58 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Section 6 Drawings 6 1 Exploded view of Spot Vital Signs 6 Electrical schematics Page 59 of 64 20 EPAIR PARIS LIST 4 S RELEASE TO PROD ENG AMT41550 36 9 PL MP PE e AA ANSA el gt gt PART NO DESCRIPTION THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR MANUFACTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION Ut DRAWN DATE DATE MATERIAL _ SERVICE REPAIR CAD SOFTWARE Prot y CAD SOFTWARE P PARTS 2 _ UNLESS OTHERWISE SPECIFIED DRAWING NO REV EC ONS 2 OF THE SPOTI SERVICE MANUAL 95P506E FOR DESCRIPTIONS TOLERANCES 421216 ORS SKIES D 500 SHEET of REV DESCRIPTION ECN ECO DATE RELEASE TO PROD ENG AMT41550 3 9 5 00 T W CHG S N LABEL LOCA
36. TION ADD NOTE 8 ADD P N 502 AMT41550 37 12 28 01 ADD INSTALL R99 ON
37. WelchAllyn Service Manual Spot Vital Signs PN 95P506E Copyright 2001 Welch Allyn Inc Spot Vital Signs Service Manual WelchAllyn Spot Vital Signs Service Manual Page 2 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Revision History Version Date Author Description A 3 31 01 JDB Introduction of Service Manual Page 3 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Table of Contents Section 1 General Information 2 02 4 1100011 entente nennen ener enne 5 1 1 6 5 Personnel ene eee eet ce texte cete pe ite tet eee 2 1 2 Limited 6 SEEVICE ner eg Ed edo e teo de e 6 Technical Assistante nini ee RE elicit eval ive RUE HEURE REED Ee Severa 6 13 Basic System DOesSCEIptlott ete tette e tec e ete e ie e tenete eed E 8 Introductions poH dedo de dedu diede 8 1 4 Basic Syster Operation rot ee eR pete t tette E ee tet ren pee le rte debere rege eg 9 1 5 Specifications oii ariete ed e enn ER Te relie ie elt ge te nee ele eie aee edd 13 1 6 Identification Label and Serial Numbering System 16 1 7 Firmware Identification 2 2 dnte ee a e HEU Ete He eet 1
38. al Revision A Changes in absorption caused by pulsation of blood in the vascular bed are used to determine arterial saturation and pulse rate Oxygen saturation percent is calculated with each pulse detected and thus the device display is continually updated 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 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 driven from data collected as part of the blood pressure measurement method Removal of the SpO2 sensor from the patient will initiate an audible beep to alert the user that the sensor has been disconnected SpO2 is generally measured via pulses detected using a finger sensor and performs most accurately with the finger clip sensor The finger clip sensor may be used on all fingers except the thumb For certain situations SpO2 may be measured at alternate sites including the earlobe forehead and toes Special sensors must be employed in these situations The finger clip sensor is recommended for spot checks or short term evaluation less than 60 minutes Patient supervision 15 required as Spot Vital Signs has no alarm capability Oxygen Saturation and pulse ra
39. al Support Watt for display window to read OrL Aly or Rec as appropnate before placing probe Low Temperature Read Improper probe Place probe in most postenor sublingual pocket ings placement when in mode Notify Biomedical department or Welch Allyn Tech nical Support No Temperature Dis Probe not Replace probe in holder pror to taking another played replaced temperature SYMPTOM SpO2 Malfunction POSSIBLE CAUSE EXPLANATIONS AND CORRECTIVE ACTION Sensor in place but Improperty Insert the patient s finger completely ito sensor 500 on Display attached sensor Ensure sensor cable is correctly plugged into Cable incorrectly device plugged into device Inaccurate 5 0 Read Incorrect Sensor Ensure that correct manufacturers sensor is in ing use Use only Nelicor Puritan Bennett sensors Page 36 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A SYMPTOM Printer Malfunction Possible Cause Explanations and Corrective action Paper will not advance Consult printer Technical Manual Notify Biomedical department or Welch Allyn Technical Sup port SYMPTOM Device will not turn on Possible Cause Explanations and Corrective action Low battery Check connections between device and transformer and transformer and wall receptacle Device not powering up Unplug unit from wall receptacle and check for breaks in cord If connections secure check electrical outlet Chargin
40. crease the pressure to 250 5 mmHg using the bulb and valve Place the cursor into the box below the calibrate 0 button and type in the value of the pressure reading seen on the pressure meter Once completed select calibrate 250 Select and the software will respond by asking Are you sure and then asking for a calibration signature your initials After placing your initials in to the dialog box Select OK and the pressure calibration is complete Cycle power to the unit for the changes in the calibration to take effect END OF SECTION 3 3 Page 30 of 64 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 Event Log Erased SpO2 ERROR CODES ERROR CODE DESCRIPTION Internal Malfunction 10 Minute Diagnostic Limit Exceeded Page 31 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A TEMPERATURE BOARD ERROR CODES Pis Kel ne Broken or Missing Probe Loss of Tissue Contact C22 10 Minute Diagnostic Limit Exceeded End of Section 3 4 Page 32 of 64 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 app
41. ctly measured Temperature Operating Modes Thermometry measurements are made with the Welch Allyn SureTemp technology Oral and rectal probes utilize single use disposable probe covers that limit cross contamination Oral axillary or rectal temperatures are taken using Normal or Monitor operating modes Axillary temperatures are taken using the blue oral probe Page 9 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Rectal temperatures are taken using the red rectal probe In the Normal mode the thermometer s microprocessor predicts body temperature in about 4 seconds for oral temperatures about 10 seconds for axillary temperatures and in about 15 seconds for rectal temperatures The monitor mode displays the patient s actual temperature after 3 minutes for oral rectal mode and 5 minutes for axillary mode and will continue to display an updated temperature as long as the probe remains in place Temperature readings may be displayed in Fahrenheit or Celsius scales Max Min Temperature Ranges Ternperature 66 0 F 30 0 C 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 This predictive feature allows the thermometer to arr
42. djust the pressure gain value until the unit pressure deviation from the applied pressure is less than 0 1 mmHg Continue to utilize the following formula until the pressure is less than 0 1 mmHg applied pressure unit pressure pressure gain value The pressure gain value must be 1000 to 31767 When the pressure transducer calibration is performed only when successful a calibration signature will be stored in the Unit memory The calibration signature can be any of up to four printable characters When the pressure transducer calibration is performed only when successful the date and time of that calibration will be stored in the 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 The maximum limit for the 0 reading will be 1 0 mmHg all others 3 0 mmHg Valve Control Test With a 100 cc volume connected to the Unit pressure port and pressurized to 160 mmHg give Unit commands to open the valve for 10 mSec 15 mSec and 25 mSec And record each pressure drop The pressure drops will be 4 to 12 mmHg 4 to 15 mmHg and 4 to 25 mmHg respectively Page 62 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Battery Calibration Requirements The Unit battery voltage
43. e View the digital multi meter DMM that is connected to the power supply reading the voltage Move the cursor to the Calibrated Voltage box and type in the voltage that you observe on the DMM In the software select Update The software will then prompt you to enter in a Calibration Signature Move the cursor to the box and enter the three initials of your name Then select OK At this point you should see the voltage on the LCD display of the unit change to match that of the DMM END OF SECTION 3 2 Page 29 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 3 3 Calibration Procedure Pressure PRESSURE CALIBRATION R 10 Connect unit to test station by hooking up pneumatic tubing removing battery and connecting the power supply Ensure that there are no obstacles in the way of the IR window Ensure that the voltage of the power supply is 6 5 0 2 Vdc Place the unit into the configuration test mode by holding down the start button while powering up the unit Allow the software versions to be displayed then press the mode button until the unit displays CAL in the LCD window Go to the repair software and choose CalibratelManometer Ensure that the valve is open and select Calibrate 0 Once this is completed successfully close the valve by pressing the start button Ensure that the 500cc volume is the only volume in the system and in
44. e e OR cab ete eerte ete a seb Soest ete nb Saket ette id 42 4 5 Remove Power and Battery 43 4 6 PCB tp e ERI e ete e ERE eere REL ep eee a 44 4 7 SpO2 PCB Removal If configured with 5 2 45 4 8 Pump and Valve 1 46 Section 5 Test Procedures uie de npe i E e pd PO perde TO Ee eO Eee dee 47 section 5 1 Calibration Tests ode eere teer ede mede mee 47 Section 5 2 Current Tests e ee eH e Pei ERO e line ae 48 Section 5 3 Noise Levels ue exec te tette ete e Covet 49 Section 5 4 Button Test disi pde do de OR e dei der e diee dne ide 50 Section SS Interface Test cir it eet regie er et rp Hee eat ee ete eee oes thee ege 51 Section 5 6 Print Quality eH mien die 52 Section 5 7 Pneumatic Tests dha te etae tee ete eae bete lees 53 Section 5 8 SpO2 Tests iip ERREUR FG EHE UCET EHE Er eda 54 Section 5 9 Tempertat re Tests do eie dite dete e ee etuer refe eret e 55 Section 5 10 Fail Safe T sting RH e eee e ipse e 56 Section 5 11 Check List For Spot Vital Signs Service 57 Section 6 Drawings ois bere db dei dee de pope deberent denter tede Eds 59 Section 7 Repair Test
45. e equal to or greater than 2 1 Page 61 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Repair Test General Unit Test A D Noise Test The Noise Test is defined as the amount of noise on the Unit A D pressure channel over a second sample time while 0 0 mmHg is applied to the Unit pressure port The maximum limit is 0 050 mmHg Leak Test Leak Test is defined as the amount of pressure drop that is recorded over a 15 second interval with a 100cc volume attached to the Unit pressure port and that volume having a stabilized pressure of 250 mmHg The limit is 5 mmHg max Inflation Test Inflation Test is defined as the amount of time the Unit pump can inflate a 250cc volume from 5 mmHg to 210 mmHg The limit is 7 seconds max Dump Test Dump Test is defined as the amount of time it takes the Unit to deflate a 500cc volume from 260 mmHg to less than 15 mmHg The limit is 10 seconds Pneumatic Calibration Note The Unit can not be calibrated if the internal temperature is beyond 32 C The unit will be calibrated with 0 and 250 mmHg applied to the pressure port with the following algorithm Adjust the pressure calibration offset value with the following formula Last autozero pressure value current unit pressure 16384 pressure offset correction value pressure gain correction value The pressure offset value must be 15384 to 15384 The Unit must be able to successfully perform an autozero A
46. e facilities 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 Refer to the Spot Vital Signs Operator s Manual for complete information on Indications For Use Special Features Supplies and Accessories Page 8 of 64 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 This action immediately initiates a rapid cuff deflation The blood pressure measurement data will appear on the display immediately following the measurement and remain displayed for two minutes After two minutes the display goes blank and the device will go into standby mode The most recent BP measurement may be recalled by pressing the Print Mode Next Patient Clear or BP Start Stop button Max Min Blood Pressure Ranges The maximum and minimum ranges of blood pressure are detailed below Mme Systolic Pressure 250 mmHg 60 mmHg Diastolic Pressure 160mmHg 30 mmHg Mean Arterial Pressure MAP Ranges 40 190mmHg Calculated from Systolic and Diastolic data not dire
47. e obtained from Welch Allyn Inc IBM compatible 486 133 MHz computer or better The computer must have Windows 95 with a serial port CPU must have 8 Megabytes of RAM 2 Digital Multi Meters These meters must have 4 1 2 digit displays for accuracy Power Supply 0 20 Vdc adjustable with 0 3A output Oscilloscope 60 MHz minimum Page 21 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 2 5 Replacement Parts Reference 6 1421002 501 Battery Assembly Cid 8 41040 JReaHouing 9 421049 502 Front Housing Assembly 17 421099 Cable Assembly pump valve Pneutronics Valve 1215106 421066 Flex Cable Temperature to Main 421001 502 Pneumatic Assembly Numbers corresponding to the parts shown in the exploded view drawing in section 6 2 6 Supplies and Accessories The following parts can be purchased by the end user as well as the authorized repair sites Blood Pressure Accessories And Supplies Latex Free Cuff and Bag Combination 5200 01 Adult cuff bladder and connector 5200 02 Large Adult cuff bladder and connector 5200 03 Small cuff bladder and connector 5200 10 Thigh cuff bladder and connector Durable One Piece Cuff 5200 13 Small Child one piece cuff and connector 5200 14 Child one piece cuff and connector Page 22 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 5200 15 Small Adult one piece cuff and connector 5200 1
48. eassembling the SpO2 PCB to the Main PCB Reassemble in reverse order End of Section 4 7 Page 45 of 64 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 gt 15 16 17 with the 4 Phillips bit T112919 Lift handle cover and aside Lift battery from housing and disconnect the Molex connector Remove 3 10 Torx Screws from the temperature pod using T112917 with the 10 Torx bit T114030 Roll temperature pod toward top of the unit and place on test bench Unplug the flex cable from the temperature connector PCB and aside the temperature pod Remove the 4 Phillips head screws using T112918 with the 4 Phillips bit T112919 If equipped with SpO2 remove and aside SpO2 cable clip Remove the tubing from the front housing and aside housing 11 12 13 14 Gently lift the LCD module from its post Roll the LCD to the left and set on the bench beside the Spot unit Remove the flex cable from the LCD and aside the display Disconnect the power cable from the main PCB by pushing down on the tab and pulling toward the bottom of the unit Remove the pneumatic tubing from the transducer on the PCB Remove the battery Valve cable connector from the bottom of the PCB Remove 4 10 Torx screws from the PCB using
49. ersonnel or a Welch Allyn Inc Service Center Technical Assistance If you have an equipment problem that you cannot resolve call the Welch Allyn Inc Service Center nearest you for assistance Technical service support is available to you by telephone on normal business days at the locations listed on the next page Page 6 of 64 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 Returns without an RMA number will not be accepted for delivery Welch Allyn Inc Service Centers For Service or Repair USA Customers Welch Allyn Inc Technical Service Centers 95 Old Shoals Road Arden NC 28704 9739 USA Phone 828 684 4895 Fax 828 687 1002 Welch Allyn GmbH Technical Service Center Zollerstrasse 2 4 Road D 72417 Jungingen GERMANY Phone 49 7477 927 10 Fax 49 7477 9271 90 Welch Allyn Ltd 21 09 Golden Mile to 6001 Beach Road Singapore 199589 REPUBLIC OF SINGAPORE Phone 65 291 0882 Fax 65 291 5780 MDI International Technical Service Centers 7324 SW 48th Street Suite A Miami FL 33155 USA Phone 305 669 9591 Fax 305 669 1971 CANADA Customers Welch Allyn Canada Limited Technical Service Centers 160 Matheson Blvd East Mississau
50. ews using T112918 with the 4 Phillips bit T112919 If equipped with SpO2 remove and aside the SpO2 cable clip Remove the tubing from the front housing and aside housing Gently lift the LCD module from its post Roll the LCD to the left and set on the bench beside the Spot unit 13 14 Remove the flex cable from the LCD and aside the display Disconnect the power cable from the main PCB by pushing down on the tab and pulling toward the bottom of the unit Remove the pneumatic tubing from the transducer on the PCB Remove the battery Valve cable connector from the bottom of the PCB Remove the 4 10 Torx screws from the PCB using T112917 with the 10 Torx bit Lift Main PCB from housing and aside If unit has SpO2 remove the SpO2 Module from defective Main PCB and add to new Main PCB Reassemble in reverse order End of Section 4 6 Page 44 of 64 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 Que 9 10 11 14 15 16 17 18 19 20 with the 4 Phillips bit T112919 Lift handle cover and aside Lift battery from housing and disconnect the Molex connector Remove 3 10 Torx Screws from the temperature pod using T112917 with the 10 Torx bit T114030 Roll temperature pod toward top o
51. f the unit and place on test bench Unplug the flex cable from the temperature connector PCB and aside the temperature pod Remove the 4 Phillips head screws using T112918 with the 4 Phillips bit T112919 If equipped with SpO2 remove and aside the SpO2 cable clip Remove the tubing from the front housing and aside housing Gently lift the LCD module from its post 12 13 Roll the LCD to the left and set on the bench beside the Spot unit Remove the flex cable from the LCD and aside the display Disconnect the power cable from the main PCB by pushing down on the tab and pulling toward the bottom of the unit Remove the pneumatic tubing from the transducer on the PCB Remove the battery Valve cable connector from the bottom of the PCB Remove the 4 10 Torx screws from the PCB using T112917 with the 10 Torx bit Lift Main PCB from housing and aside Remove the 3 Phillips head screws along with the nuts and spacers form the SpO2 PCB Use T112918 with the Phillips bit T112919 and needle nose pliers Remove the SpO2 module Nellcor MP205 from the main PCB and aside Note Remember to ensure that they are two shunts at the top of the jumper row on the Nellcor 205 Before you install onto the Main Further ensure that the two locking tabs the connectors of the Nellcor MP205 are broken off before installing onto the Main PCB Ensure also that the nylon washers are located on the main PCB when r
52. g Indicator will be on if connectons are OK and the device is plugged into working outlet Biomedical Department or Welch Allyn Technical Support SYMPTOM Cuff Too Tight Over Inflation Possible Cause Explanations and Corrective action Pressure Preset too high Check default Pressure Preset setting in Configuration Mode Unless patent has underlying systolic hypertension set pressure preset at 160 mmHg systolic blood pressure greater than pressure preset the device will automatically increase an additional 40 mma SYMPTOM Cuff popping off POSSIBLE CAUSE EXPLANATIONS AND CORRECTIVE ACTION Inappropriate cuff size Determine cuff size with the cuff markings or refer to chart in Operator s Manual for determining cuff size e f cuff continues to pop off notify Biomedical Department or Welch Allyn Technica Support Cuff applied inside out Re apply cuff e Make sure Welch Allyn label is facing away from arm SYMPTOM Cuff Deflating Too Slowly Possible Cause Explanations and Corrective action Norma operation Typical time to take a reading is 20 to 45 seconds 165 sec onds is the maximum Page 37 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Pressure Preset too high Check default Pressure Preset setting In Configuration Made Patient movement Have patient sit stil Da not have arm tight agamst chest wall as respiration may affect speed and accuracy of blood pre
53. ga Ontario 147 CANADA Phone 905 890 0004 or 1 800 561 8797 Fax 905 890 0008 INTERNATIONAL Customers Welch Allyn Australia Pty Ltd Technical Service Center 5 38 46 South Street Rydalmere NSW 1701 AUSTRALIA Phone 61 29 4183 155 Fax 61 29 4183 650 Welch Allyn UK Ltd Cublington Road Aston Abbots Buckinghamshire HP22 4ND UNITED KINGDOM Phone 44 129 668 2140 Fax 44 129 668 2104 LATIN AMERICA Customers Page 7 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 1 3 Basic System Description Introduction The Welch Allyn Spot Vital Signs is designed to non invasively and automatically measure systolic and diastolic pressure pulse rate temperature and oxygen saturation SpO2 for adult and pediatric patients THE WELCH ALLYN SPOT VITAL SIGNS IS NOT INTENDED TO BE USED ON NEONATAL PATIENTS blood pressure pulse temperature and SpO2 values can be viewed on a large easy to read display and may be printed via the IrDA port to an external printer as desired The rechargeable lead acid battery and variety of mounting accessories make the Welch Allyn Spot Vital Signs convenient for many locations The operator may choose any combination of simultaneous measurement modalities The Welch Allyn Spot Vital Signs is intended for use in a wide variety of health care settings This includes hospital departments as well as alternate care settings such as physicians offices clinics and long term car
54. he 10 Torx bit T114030 Aside housing Reassemble in reverse order End of section 4 2 Page 40 of 64 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 mu with the 4 Phillips bit T112919 Lift handle cover and aside Lift battery from housing and disconnect the Molex connector Remove 3 10 Torx Screws from the temperature pod using T112917 with the 10 Torx bit T114030 Roll temperature pod toward top of the unit and place on test bench Unplug the flex cable from the temperature connector PCB and aside the temperature pod Remove the 4 Phillips head screws using T112918 with the 4 Phillips bit T112919 If equipped with SpO2 remove and aside the SpO2 cable clip 10 Remove the tubing from the front housing 11 Remove the switch array from the front housing Aside Front Housing Reassemble in reverse order End of Section 4 3 Page 41 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Due 4 4 Display Lay unit face down on the test bench Remove the 4 Phillips head screws holding the battery cover handle to the unit using T112918 with the 4 Phillips bit T112919 Lift handle cover and aside Lift battery from housing and disconnect the Molex connector Remove 3 10
55. his test can only be completed if using the TTL service port This test can not be completed if the tester is using IR for communication Further if print quality is poor change out the AA batteries of the printer and re test End of Section 5 6 Page 52 of 64 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 2 Select TestlPneumatic and then the Leak Test option The software will test for leak and will give you a Pass or Fail indication 3 Select the Dump Test option The software will automatically test for the dump speed and will give you a Pass or Fail indication 4 Select the Inflation Test option The software will automatically test for the inflation time and give you a Pass or Fail indication 5 Select Valve Control Test option The software will automatically test to ensure that the unit can control the valve and ensure that the valve is good 6 Select OK to exit the dialog box End of Section 5 7 Page 53 of 64 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 b Light High 1 c
56. housing the unit must be in the monitor mode if not wait until the unit is in that mode Place probe into the small hole at the top of the calibrator The reading should be 106 F 3 F within 30 45 seconds If using a water bath skip this part of the test End of Section 5 9 Page 55 of 64 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 2 Place the unit into the configuration test mode by holding down the start button while powering up the unit Allow the software versions to be displayed then press the mode button until the unit displays CAL in the LCD window 3 Ensure that the unit is connected to the 500cc volume 4 Press the start button to close the valve 5 Increase pressure on the unit until E10 appears in the LCD screen Record the highest pressure observed on the pressure meter 6 Press the cancel button to return the unit to CAL mode 7 Press the start button to close the valve 8 Apply 70 mmHg to the unit and start a timer 9 When the unit returns E11 stop the timer and record the time End of Section 5 10 Page 56 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Section 5 11 Check List For Spot Vital Signs Service Work Gene
57. iatric Spot Check use with Dura Y sensor D 25 OXISENSOR Adult Digit Oxygen Transducer case of 24 D 25L OXISENSOR Adult Digit Oxygen Transducer long cable case of 24 Page 23 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A D 20 OXISENSOR Pediatric Oxygen Transducer case of 24 1 20 OXISENSOR Infant Digit Oxygen Transducer case of 24 R 15 OXISENSOR Adult Nasal Oxygen Transducer case of 24 OXICLIQ Adult Oxygen Transducer use with OC 3 cable case of 24 OXICLIQ 6 P Pediatric Oxygen Transducer use with OC 3 cable case of 24 OC 3 OXICLIQ Sensor Cable OXI A N OXIBAND Adult Neonatal Oxygen Transducer 1 sensor 50 wraps OXI P I OXIBAND 9 Pediatric Infant Oxygen Transducer 1 sensor 50 wraps RS 10 Reflectance Oxygen Transducer 6 sensors 6 headbands SRC 2 Portable Oximetry Tester Mounting Accessories And Supplies 4200 60 Complete Mobile Stand Unit includes Storage Basket Pole and Base Assembly Transformer Mounting Kit 4200 62 Complete Wall Mount Unit includes Storage Basket Wall Mount Bracket Transformer Mounting Kit Recommended 4200 64 Complete IV Pole Mount Unit includes Storage Basket IV Pole Mount Bracket Transformer Mounting Bracket 4200 70 Anti Theft Kit for Mounting Device Miscellaneous Supplies 14042 Thermal Printer 14052 Thermal Printer with Mobile Stand Mount 53600 Printer Paper 1 case 6 boxes 24 rolls 53600B Printer Paper 4 roll box
58. ill come on to ensure operation The pass fail criteria is subjective to the user Temperature Option Requirements Accuracy Testing The accuracy of the temperature module must be within 0 2 for readings with a nominal temperature of 97 3F 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 2 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 0 0 8C measuring against a temperature standard that is accurate to within 1 0 F 0 8C Temperature Probe Test The unit will display 188 8 and then ORL once the oral probe is removed from the probe housing SpO2 Option Requirements Note These tests are only performed if configured forSpO2 SpO2 Functional Test The SpO2 Functional Test is defined as the ability of the Unit to correctly report an applied SpO2 signals from a Nellcor SRC2 Simulator The applied signals are 81 O2 112 BPM at a saturation level of 100 The limits are 3 counts for the O2 readings and 3 counts for BPM readings Page 63 of 64 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 termi
59. ive at an accurate oral temperature reading in approximately 4 seconds Normal mode is the default operating mode for the temperature determinations Operator selectable patient alarm limits are not available in temperature Normal mode However temperatures that are outside of the operating range of the device will be noted on the temperature display Temperature Monitor Mode Continuous Monitor Mode operation is normally used when difficult situations prevent accurate temperatures from being taken in the Normal mode The probe must be in contact with tissue for at least three minutes for accurate oral rectal temperature measurement and five minutes for accurate axillary temperature measurement Monitor mode temperatures may not be identical to predicted Normal temperatures because of ambient temperature influence and other factors The trend in temperature is the important standard to be observed when in the Monitor mode Operator selectable patient alarm limits are not available in temperature monitor mode However temperatures that are outside of the normal operating range of the device will be noted on the temperature display SpO2 Operating Mode The Spot Vital Signs incorporates the Nellcor Puritan Bennett pulse oximetry system which determines arterial oxyhemoglobin saturation SpO2 by measuring the absorption of red and infrared light passed through the tissues Page 10 of 64 Welch Allyn Inc Spot Vital Signs Service Manu
60. nals placing the Unit in the Blank Mode actuating the SpO2 mode and applying any SpO2 signal to the Unit The maximum limit is 120 mA max Fail Safe Testing Over Pressure Test The unit will be able to detect over pressure on the unit s pneumatic system between 296 0 mmHg and 329 mmHg Over 15 mmHg The unit will be able to detect if the static pressure has been over 15 mmHg for 180 second Page 64 of 64
61. nation Time Oral 4 seconds typical 15 seconds maximum Axillary 10 seconds typical Rectal 15 seconds typical Oxygen Saturation Range SpO2 40 100 oxygen saturation SpO2 Accuracy 3 in the range of 70 100 oxygen saturation 1 Standard Deviation 7096 unspecified by the OEM Battery Charging To 90965 10096 capacity in 12 hours Unit will operate and charge battery simultaneously when connected to power source Mechanical Specifications Dimensions Height 9 70 inches 24 64 cm Length 5 72 inches 14 53 cm Depth 4 73 inches 12 01 cm Page 14 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Weight Approximately 4 25 pounds Mounting Self supporting on rubber feet Custom Mobile Stand Custom Made Wall Mount Portability May be hand carried when held by the rear handle Electrical Specifications Power Requirements Patient Rated isolation transformer is connected to AC mains North American Version 120VAC 60 Hz 0 20A Input Source 8VDC 0 75A Output Source International Version 220 240V AC 50 60Hz 0 20A Input Source 8VDC 0 75A Output Source Battery Lead acid with external charger 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
62. nd Corrective action Determine correct cuff size Use reference markings on cuff Measure patent s arm arcumference midway between elbow and shoulder see Chart for Determining Cuff Size on page 24 to select correct cuff sizel Pavent s arm position Ensure patient s arm is at heart level Arm movement dunng blood pres Keep arm still during blood pressure cycle sure Movement may cause inaccuracies fram artifact Blood pressure taken over cloth Blood pressure should be taken on a bare arm ing Arrhythmia Incorrect reference Change in blood pressure from auscultatory reading to Welch Allyn Spot Check Device reading Poor auscultatory sound recogni tion by observer Check for regularity of heart rate palpate pulse or check devicel Moderate to severe heart rate irregulares may make blood pressure difficult to measure Use the correct Korotkoff sound to determine diastolic blood pressure Many listeners incorrectly equate diastolic blood pressure with the disappearance of sound only iphase 5 The Welch Allyn Spot Check Device was developed using the American Heart Association recommendatans which state that phase 5 be used unless sound continues to 0 mmHg in which case the change in the quality of sound phase 41 1 to be used Deflate cuff no faster than 3 mmHg per second One of the major sources of efor in auscultatory blood pressure measurement is deflating the cuff too quickly
63. nplug the probe and plug in the cal key 5200 25 remove the probe and Confirm reading meets specifications called out on the Repair Test Specification document If there is no reading at this point change the temperature connector PCB and cable to the main PCB Reference section 4 2 page 40 Page 27 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 10 FOR THE COMMUNICATION OPTION Select ToolslOptions 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 If the error is still present change out the main PCB Reference section 4 6 page 44 End of section 3 1 Page 28 of 64 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 Adjust the power supply to 5 5 0 2 0 Vdc Place the unit into the configuration test mode by holding down the start button while powering up the unit Allow the software versions to be displayed then press the mode button until the unit displays BAT in the LCD window Go to the repair software and choose CalibratelVoltag
64. nts 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 Welch Allyn Inc will either repair or replace any components found to be defective or at variance from manufacturer s specifications within this time at no cost to the customer It shall be the purchaser s responsibility to return the instrument to Welch Allyn Inc or an authorized distributor agent or service representative This warranty does not include breakage or failure due to tampering misuse neglect accidents modification or shipping This warranty is also void if the instrument is not used in accordance with manufacturer s recommendations or if repaired by other than Welch Allyn Inc or an authorized agent Purchase date determines warranty requirements No other express warranty is given To receive service assistance or to ask questions regarding this warranty please call or write Welch Allyn Inc Technical Services Dept 95 Old Shoals Road Arden North Carolina 28704 USA 1 800 450 9275 or 828 684 4895 Fax 828 687 1002 Service Policy repairs on products under warranty must be performed or approved by a Welch Allyn Inc Service Center Unauthorized repairs will void the warranty Products out of warranty should be repaired by qualified electronics p
65. ral Data Repair Number Date Tech Unit SN Life Cycle Model Repair Data Check all items repaired replaced and record serial where possible ltems RepairorReplaced Serial Number or Lot Number MainPCB 4 02 Display PCB Temp Connector PCB 000 O Pneumatic Tubing SSS S O Power Harnes Jo ooo o O Front Housing Rear Housing d O Temperature Pod Temperature Probe SpO2Sensorn Page 57 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Wiswveso Pressure 275 a Sig Unit pressure Test Pressure 175mmHg Unit Pressure 75mmHg e 3mmHg Test Pressure 0mmHg Unit Pressure 50mmHg e 3mmHg Pressure G0mmdg mimm Test Pressure OmmHg mimm O Test Voltage 60 0 02Vdc O Unit Voltage Blank Current 230m Back Light Curent 40m VivcPumpCumm Noise Level O J PswFi Print Quality Fapplieabiey Pasma O U UitDumpTim eloseods O Unit inflation Time e7seods Valve Control Test Psw O
66. ropriate equipment 10 11 Use a certified accurate sphygmomanometer and quality stethoscope Select a blood pressure cuff of a suitable size Use a blood pressure cuff of the largest appropriate size for patient see markings on inside of cuff Have the patient assume a comfortable position with the upper arm relaxed at heart level and the lower arm passively supported Expose the area of the brachial artery by removing clothing or move a sleeve if not too tight above the area where the cuff will be placed Center the cuff bladder so that the lower edge is at least 1 inch 2 5cm above the bend of inner arm of the elbow Palpate the brachial or radial pulse Inflate the cuff until the pulsation disappears Then continue to inflate until the pressure reads 30 mmHg above the point where the pulse disappeared Listen carefully with stethoscope over brachial artery while controlling the release of air at a rate of 3 mmHg per second Systolic is determined by reading the manometer gauge when the first faint but clear tapping sound is heard with the stethoscope Diastolic in adults is determined by reading the manometer gauge to the closest even number when the last sound is heard Release the air quickly after at least 10 to 20 mmHg of silence Explanation Many sphygmomanometers are inaccurate Low quality stethoscopes do not transmit sound well enough for blood pressure sounds to be heard accurately cuff that is
67. ssure measurement Small leak i pneumatic system Check cuff and tubing for Page 38 of 64 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 3 Lift handle cover and aside 4 Lift battery from housing and disconnect the Molex connector Reassemble in reverse order End of Section 4 1 Page 39 of 64 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 3 Lift handle cover and aside 4 Lift battery from housing and disconnect the Molex connector 5 Remove 3 10 Torx Screws from the temperature pod using T112917 with the 10 Torx bit T114030 6 Roll temperature pod toward top of the unit and place on test bench 7 Unplug the flex cable from the temperature connector PCB and aside the temperature pod 8 Remove the 10 Torx screws from the temperature connector PCB using T112917 with the 10 Torx bit T114030 Aside the temperature connector PCB 9 Remove the temperature probe housing by removing the two 10 Torx screws using T112917 with t
68. te is displayed on the LCD display On each detected pulse the pulse signal bar graph flashes The intensity of this signal is a simple visual indicator of waveform signal strength and can identify situations where the pulsatile nature of the tissue may not be adequate for an accurate SpO2 reading The update interval bar of the bar graph should correspond to the patient s pulse rate This is an indication of the quality of the SpO2 signal Max min SpO2 Ranges The SpO2 sensor is designed to detect oxygen saturation as follows Page 11 of 64 Welch Allyn Inc Spot Vital Signs Service Manual 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 Max Min Pulse Rate Ranges The maximum and minimum pulse rate ranges are as follows 200 bam sing B E determination 245 Using deteminatian Page 12 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 1 5 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 pa
69. tients Welch Allyn defines a pediatric patient as 29 days old and above THE SPOT VITAL SIGNS IS NOT INTENDED FOR USE WITH NEONATES Welch Allyn defines neonates as children 28 days or less of age born at term 37 weeks gestation or more otherwise up to 44 gestational weeks Cuff Pressure Range 0 mmHg 300mmHg Initial Cuff Inflation 160 mmHg smart inflation Systolic Determination Maximum 250 mmHg Minimum 60 mmHg Diastolic Determination Maximum 160 mmHg Minimum 30 mmHg Blood Pressure Accuracy Blood pressure accuracy meets or exceeds SP10 1992 AAMI standards for non invasive blood pressure accuracy AAMI standard 5 mmHg mean error 8 mmHg standard deviation Blood pressure accuracy is validated for pressure measurement using the upper arm only Blood Pressure Determination Time 20 seconds to 45 seconds typical 165 seconds maximum Pulse Rate Determination Using SpO2 determination Maximum 245bpm Minimum 25bpm Pulse Rate Accuracy SpO2 Module Heart Rate 3 0 bpm Blood Pressure Algorithm Heart Rate 5 0 Page 13 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Overpressure Cutoff 315 mmHg 15 mmHg Temperature Ranges Temperature 109 4 Min 86 0 43 0 Min 30 0 Temperature Accuracy Temperature accuracy meets or exceeds ASTM E112 86 Standard Specification for Electronic Thermometer for Intermittent Determination of Patient Temperature Temperature Determi
70. umatic clamp to the 100cc and the 250cc volume remove the clamp from the 500cc volume 4 Select TestlCalibration The dialog box will display the unit manometer reading unit battery reading valve and pump status 5 Use Start button to close valve of the unit and hand bulb to set the pressures 6 Verify that the unit is within calibration specification at all the following target pressures 0 50 175 275 mmHg target pressures have a tolerance of 5 mmHg Specification are found in the Repair Test Specifications document 7 Press the mode button until the LCD window reads bat 8 Set power supply to 5 5 0 2 0 5 5 to 5 7 Vdc Verify that the voltage reading of the unit meets specification called out in the Repair Test Specification document Return the power supply to 6 5 Vdc upon completion of this test 9 Select OK to exit from the Test Calibration dialog box End of Section 5 1 Page 47 of 64 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 2 Power down unit then re power unit allowing the unit to boot up into its normal mode 3 Select TestlCurrent Levels Check the following current levels a Blank b Back Light c Valve Pump d SpO2 Mode 4 Verif
71. 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 n 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 Press the Start or Clear button to cycle through the SpO2 software number In the SW2 screen The two numbers represent the NIBP module software and the Temperature Algorithm Version If temperature is active Note Verify the firmware levels by reviewing the Repair Test Specifications document Page 17 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Section 2 Service 2 1 Intent of Manual and Product Scope 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 The manual includes Re calibration instructions fault cause analysis step by step disassembly and re assembly procedures repair adjustment and re test procedures Page 18 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A 2 2 Test Equipment Bench Layout Figure 2 2 depicts recommended layout of test equipment and special tools for service and re calibration of
72. ure that there are no obstacles in the way of the IR window 2 Select TestlDisplay in the repair software 3 Select all on in the LCD Display section and ensure that all the segments are lit on the unit 4 Select all off in the LCD Display section and ensure that all the segments are not lit on the unit 5 Select normal in the LCD Display section to return the display to normal 6 Select in the Back light section and ensure light comes on 7 Select off in the Back light section and ensure light goes off 8 Select the buzzer test and ensure that the buzzer of the Spot Device is Select OK to exit test and turn off the buzzer 9 Select OK to exit dialog box End of Section 5 5 Page 51 of 64 Welch Allyn Inc Spot Vital Signs Service Manual Revision A Section 5 6 Print Quality 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 2 Ensure that you have the HP IR printer that work with the Spot Vital Signs 3 Choose TestlPrint Quality Choose test pattern 1 The printer will print out a pattern of large and small ASCII characters Verify the quality of the printer output Once test 1 is complete choose test pattern 2 The printer will print out a solid gray field Verify the quality of the printer output 4 Select OK to close the box Note T
73. y these currents meet the specifications called out in the Repair Test Specification document 5 Select OK to exit dialog box End of Section 5 2 Page 48 of 64 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 2 Click on TestINoise Levels 3 Press Test button to retrieve the units internal pressure channel noise level Verify that the noise level meets the specification called out in the Repair Test Specification document 4 Select OK to exit dialog box End of Section 5 3 Page 49 of 64 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 2 Choose TestlButton Test Press each button and ensure that the computer acknowledges it via the Button Pressed display 3 Select OK to exit from dialog box END OF SECTION 5 4 Page 50 of 64 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 Ens

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