WelchAllyn 6200-43E Service Manual
Service Manual
Atlas Monitor
Atlas Patient Monitor
Welch Allyn
8500 SW Creekside Pl
Beaverton, Oregon 97008
6200-43E Revision D Copyright 2007
Part No. Rev. Description ECN# Date Approved
6200-43E A New release of Atlas Service Manual 5-40429 10/99 RS/LP
6200-43E B Updated calibration procedures
Updated performance verification procedures
Updated drawing 620150 Rev B to Rev C
Updated drawing 620201 Rev A to Rev B
Updated drawing 620524 Rev A to Rev B
Added complete repair parts lists.
Added calibration date table
6200-43E C Updated to reflect changes in hardware and software 5-45730 03/03 DK
5-44782 07/02 DK
Drawings and/or illustrations and/or part numbers contained in this
document are for reference purposes only. For current revisions call the
Welch Allyn Customer Service phone number listed in Section 1 page 2.
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor i
CONTENTS
List of Figures ...................................................................................................................vi
List of Tables .....................................................................................................................ix
Section 1: General Information
About the Atlas Monitor........................................................................................................1
Help Information ...................................................................................................................2
Agency Approvals .................................................................................................................3
Warning, Cautions and Notes................................................................................................3
Product Model Number Structure.........................................................................................5
623xP Main Menu Architecture............................................................................................6
622xP Main Menu Architecture............................................................................................7
621xP Main Menu Architecture............................................................................................8
Atlas System Block Diagram .................................................................................................9
Section 2: Service
Incoming Inspection............................................................................................................ 11
Calibration and Maintenance Schedule..............................................................................12
Setting Date and Time .........................................................................................................14
Pangea Communication Protocol........................................................................................ 14
BP Calibration...................................................................................................................... 14
50mmHg Calibration............................................................................................................17
250mmHg Calibration..........................................................................................................17
Reset (623xx Models Only)..........................................................................................18
CO
2
ET CO
No-Load Battery Voltage Calibration ..................................................................................20
Battery Voltage Calibration..................................................................................................21
Printer Print Adjustment..................................................................................................... 22
Temperature Calibration...................................................................................................... 23
Calibration Date Set............................................................................................................. 24
Explanation of an Atlas Service Screen..............................................................................25
Calibration ..............................................................................................................19
2
Software Upgrade Procedure...............................................................................................27
Down Loading NVRAM Files..............................................................................................28
ii Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3: Functional tests and Trouble Shooting
Power on Self Test ...............................................................................................................37
Menu Functional Test..........................................................................................................38
BP Test..................................................................................................................................40
Static Manometer Accuracy Test.........................................................................................41
BP Leak Test ........................................................................................................................42
Over 15 mmHg Test .............................................................................................................42
BP Dump Verification Test ..................................................................................................43
Hardware Fail Safe Tests .....................................................................................................43
ECG/Respiration Test...........................................................................................................44
SpO2 Test..............................................................................................................................45
Temperature Test .................................................................................................................45
CO2 Functional Test.............................................................................................................45
Battery Functional Test........................................................................................................46
Printer Functional Test ........................................................................................................47
Print on Alarm Test..............................................................................................................47
Software/Firmware ..............................................................................................................47
ECG Alarms Test ..................................................................................................................48
Respiration Alarms Test ......................................................................................................50
SpO2 Alarm Test ..................................................................................................................51
Silence Alarm Test...............................................................................................................52
CO2/RESP Test .....................................................................................................................52
Blood Pressure Alarm Test ..................................................................................................53
Trouble Shooting..................................................................................................................56
Section 4: Disassembly and Repair
About Section 4 ...................................................................................................................63
Battery Door Removal..........................................................................................................64
Battery Removal...................................................................................................................64
Rear Housing Removal ........................................................................................................65
Printer Cable and Display Cable Removal ..........................................................................66
Power Supply Ground Wire Removal.................................................................................66
Tie Wrap Removal................................................................................................................67
CPU Removal .......................................................................................................................67
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor iii
Main PCB Removal.............................................................................................................. 67
Main PCB Side Connector Removal....................................................................................68
Main PCB Hose and Wire Removal..................................................................................... 68
Pump Removal.....................................................................................................................68
Exhaust Removal..........................................................................................................69
CO
2
Pryon PCB Removal.............................................................................................................69
E-Pac Foam Removal (Top). ................................................................................................69
Power Supply Removal. ......................................................................................................70
Power Supply Fuse Location ..............................................................................................70
Fan Removal ........................................................................................................................70
E-Pac Removal (Lower)........................................................................................................71
Deflection PCB Removal...................................................................................................... 71
CRT Removal .......................................................................................................................71
Display PCB Removal.......................................................................................................... 72
Printer Door Button Removal.............................................................................................. 73
Printer Assembly Locking Tab Release. .............................................................................. 73
Printer Positioning Slot Removal........................................................................................74
Printer Assembly Removal.................................................................................................. 74
Printer Lip Assembly. ..........................................................................................................74
Printer Cable Routing. .........................................................................................................75
Appendix A: Theory of Operation
Power Supply Circuits.........................................................................................................77
Model 622 and Model 623...................................................................................................80
On/Off Circuits ....................................................................................................................81
Battery Charger ....................................................................................................................84
NIBP Circuits ......................................................................................................................87
CRT Deflection Board.......................................................................................................... 92
Vertical Amplifier: ...............................................................................................................92
Recorder Electronics............................................................................................................96
Power Supply – 24 Switcher...............................................................................................96
Motor Driver:........................................................................................................................97
Patient Isolated Circuits ......................................................................................................98
Linear Regulators and Filtering – Model 621 .....................................................................99
iv Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Linear Regulators and Filtering – Model 622 and 623.....................................................100
A/D Circuits .......................................................................................................................101
A/D Multiplexer.................................................................................................................102
Serial Communication.......................................................................................................103
Signal Isolation ..................................................................................................................104
ECG Circuits.......................................................................................................................104
Impedance Respiration (Model 622/623 only) .................................................................109
SpO2 Circuits .....................................................................................................................110
Appendix B: Repair Parts Lists
621N0 .................................................................................................................................113
621NP .................................................................................................................................116
621S0..................................................................................................................................119
621SP..................................................................................................................................121
622N0 .................................................................................................................................124
622NP .................................................................................................................................127
622S0..................................................................................................................................130
622SP..................................................................................................................................133
623NP .................................................................................................................................136
623SP..................................................................................................................................142
Appendix C: Interconnect Diagram
Interconnect diagram 620396 Rev A.................................................................................145
Appendix D: Atlas Drawings and Electrical Schematics
See List of Figures on page v for individual drawings.....................................................146
Appendix E: Calibration Date Table
Calibration Date Index Table. ............................................................................................187
Appendix F: Serial Number Cut in History. ...............................................211
Appendix G: Atlas Calibration and Functional Test Form........................ 213
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor v
List of Figures
Figure 1-1. 623xP Main Menu Architecture. ........................................................................6
Figure 1-2. 622xP Main Menu Architecture. ........................................................................7
Figure 1-3. 621xP Main Menu Architecture. ........................................................................8
Figure 1-4. Atlas System Block Diagram ..............................................................................9
Figure 2-1. Example of a new HyperTerminal connection. ...............................................15
Figure 2-2. Choosing COM1 in HyperTerminal..................................................................15
Figure 2-3. HyperTerminal Port Settings. ...........................................................................16
Figure 2-4. Photo of Atlas BP calibration setup. ................................................................17
Figure 2-5. Example of CO2 calibration setup.................................................................... 21
Figure 2-6. Example and Explanation of an Atlas Service Screen ....................................25
Figure 2-7. Pangea prompt in HyperTerminal ....................................................................29
Figure 2-8. Choosing “Send Text File” in HyperTerminal.................................................29
Figure 2-9. Choosing directory where NVRAM files are stored. ....................................... 30
Figure 2-10. Choosing the nvram_cal_init.txt file. ............................................................. 30
Figure 2-11. Pangea screen after opening the nvram_cal_init.txt file. ..............................31
Figure 2-12. Pangea screen after opening the nvram_common.txt file. ............................31
Figure 2-13. Pangea prompt after opening the model# file................................................ 32
Figure 2-14. Pangea screen after loading a language file. ..................................................33
Figure 2-15. Pangea screen after downloading the nvram_printer.txt file. .......................34
Figure 2-16. Pangea screen nvram set serial command. .................................................... 35
Figure A-1. Model 621 DC/DC circuit block diagram. .......................................................77
Figure A-2. On/Off Control Circuits. ..................................................................................78
Figure A-3. Model 621 Buck converter...............................................................................79
Figure A-4. Model 621 linear regulation. ...........................................................................80
Figure A-5. DC/DC circuit diagram.....................................................................................81
Figure A-6. Boost converter and off/on switch. .................................................................82
Figure A-7. Boost converter.................................................................................................83
Figure A-8. Battery charging. ..............................................................................................85
Figure A-9. Linear regulator. ...............................................................................................86
Figure A-10. NIBP PWM A/D converter. ............................................................................86
Figure A-11. PWM timing. ..................................................................................................87
Figure A-12. Primary transducer amplifier.........................................................................89
Figure A-13. Safety transducer amplifier............................................................................90
vi Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Figure A-14. Over pressure fault circuit. ............................................................................91
Figure A-15. Pump relay circuit..........................................................................................91
Figure A-16. Ramp generator circuit...................................................................................92
Figure A-17. Vertical amplifier circuit................................................................................93
Figure A-18. Horizontal amplifier grid voltage circuit. .....................................................95
Figure A-19. Video amplifier circuit...................................................................................96
Figure A-20. Recorder power supply circuit. .....................................................................97
Figure A-22. Print head temperature circuit. .....................................................................98
Figure A-23. Patient isolation circuit..................................................................................99
Figure A-24. Model 621 line regulation and filtering. .......................................................99
Figure A-25. Model 622/623 line regulation and filtering...............................................100
Figure A-26. A/D converter circuit. ..................................................................................101
Figure A-27. A/D multiplexer circuit. ..............................................................................102
Figure A-28. Serial communication circuit. .....................................................................104
Figure A-29. Defib protect and RFI filtering circuit. ........................................................105
Figure A-30. Input buffer circuit.......................................................................................105
Figure A-31. Lead select circuit. .......................................................................................106
Figure A-32. Differential amp/slew rate amp circuit. ......................................................107
Figure A-33. Right leg drive circuit. .................................................................................107
Figure A-34. High pass and gain stage circuit. .................................................................108
Figure A-35. Temperature amplifier circuit......................................................................108
Figure A-36. Respiration drive circuit. .............................................................................109
Figure A-37. Respiration diff amp circuit......................................................................... 110
Figure A-38. Gain and filter circuit...................................................................................110
Figure C-1. Atlas Interconnect Diagram............................................................................145
Figure D-1. Atlas model 200 main board..........................................................................147
Figure D-2. Atlas model 200 NIBP electronics. ................................................................148
Figure D-3. Atlas model 200 power supply......................................................................149
Figure D-4. Atlas Power isolation /SpO2 interface........................................................... 150
Figure D-5. Atlas model 200 ECG amp. ............................................................................151
Figure D-6. Atlas ECG A/D interface.................................................................................152
Figure D-7. Atlas CPU subsystem. ....................................................................................153
Figure D-8. Atlas FPGA. ....................................................................................................154
Figure D-9. Atlas 200/210/220 I/O filters. ........................................................................155
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor vii
Figure D-10. Flash, SDRAM HRESET config word. .........................................................156
Figure D-11. Power PC MP C823 CPU. .............................................................................157
Figure D-12. Power distribution........................................................................................ 158
Figure D-13. Front panel display. .....................................................................................159
Figure D-14. Key board scanner. .......................................................................................160
Figure D-15. Temp/pulse LED drivers. .............................................................................161
Figure D-16. NIBP LED drivers. ........................................................................................162
Figure D-17. SpO2 LED drivers. ........................................................................................163
Figure D-18. CRT deflection board. ..................................................................................164
Figure D-19. Printer electronics. .......................................................................................165
Figure D-20. Model 220 main board. ................................................................................166
Figure D-21. 210/220 NIBP electronics.............................................................................167
Figure D-22. DC/DC power supply....................................................................................168
Figure D-23. Power isolation/SpO2 interface. ..................................................................169
Figure D-24. 210/220 ECG amp.........................................................................................170
Figure D-25. 210/220 ECG A/D interface..........................................................................171
Figure D-26. 210/220 Respiration circuit. ........................................................................172
Figure D-27. 210/220 serial communication. ...................................................................173
Figure D-28. 200/210/220 transformer isolation. .............................................................174
Figure D-29. 200/210/220 ECG patient cable. ..................................................................175
Figure D-30. 200/210/220 power supply sub assy. ..........................................................176
Figure D-31. 220 ETCO2 PCB assembly. ...........................................................................177
Figure D-32. 200/210/220 Power supply. .........................................................................178
Figure D-33. Nonin SpO
Board........................................................................................179
2
Figure D-34. Motor Stepper...............................................................................................180
Figure D-35. Pump Pneumatic. .........................................................................................181
Figure D-36. 200/210/220 ECG cable assembly. ...............................................................182
Figure D-37. CO2 cable assembly. .....................................................................................183
Figure D-38. Nellcor sensor cable assy. ............................................................................ 184
Figure D-39. 200/210/220 Pneumatic sub assy.................................................................185
Figure D-40. 220 CO
cable assy. ......................................................................................186
2
viii Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
List of Tables
Table 1-1. Operator manual part numbers. ...........................................................................1
Table 2-1. Atlas Packing List. ..............................................................................................11
Table 2-2. Tools Required for Service. ................................................................................13
Table 2-3. Software Revision Table .....................................................................................26
Table 2-4. Files needed to download language(s)...............................................................33
Table 3-1. Transducer pressure table...................................................................................41
Table 3-2 Resistor and temperature reference. ...................................................................45
Table 3-3. Atlas failure trouble shooting.............................................................................56
Table 3-4. Atlas failure trouble shooting.............................................................................57
Table 3-5. Atlas failure trouble shooting.............................................................................58
Table 3-6. Atlas failure trouble shooting.............................................................................59
Table 3-7. Atlas failure trouble shooting.............................................................................60
Table 3-8. Atlas failure trouble shooting.............................................................................61
Table A-1. Temperature coefficient.....................................................................................84
Table B-1. Atlas 621N0 repair parts ..................................................................................113
Table B-2. Atlas 621NP repair parts. .................................................................................116
Table B-3. Atlas 621S0 repair parts...................................................................................119
Table B-4. Atlas 621SP repair parts...................................................................................121
Table B-5. Atlas 622N0 repair parts. .................................................................................124
Table B-6. Atlas 622NP repair parts. .................................................................................127
Table B-7. Atlas 622S0 repair parts...................................................................................130
Table B-8. Atlas 622SP repair parts...................................................................................133
Table B-9. Atlas 622NP repair parts. .................................................................................136
Table B-10. Atlas 623SP repair parts................................................................................. 139
Table B-11. Atlas 623NP repair parts. ...............................................................................142
Table D-1. Atlas drawings revision page...........................................................................146
Table F-1. Changed to a new BP Valve..............................................................................211
Table F-2. Changed E-Pac and Changed to class B power supply. ..................................211
Table F-3. Upgraded printer cable to a cable with foam tape. .........................................211
Table F-4. Upgraded Revision level of CPU from 501 to 502...........................................211
Table F-5. Upgraded Revision level of Nellcor SpO
to 506............................................212
2
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor ix
x Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
General Information Section 1
About the Atlas Monitor
The Atlas Monitor combines in one unit all the necessary measurements for patients under
anesthesia, for surgical recovery, or bed side monitoring. See Section 1, page 5 for a complete
listing of product models and options.
According to the standards of care for Nurse Anesthetists and Anesthesiologists, all patients
receiving conscious sedation are to be continuously monitored throughout the procedure and
recovery phase by ECG, SpO2, and NIBP. CO2 monitoring is a requirement during gas
anesthesia (when patient is ventilated).
The Atlas combines a CRT to display ECG, CO2, SpO2, and respiration waveforms. It utilizes
LEDs for the other numeric values to maximize visibility and viewing angle. Although not
designed to be a transport product, the monitor has an integral handle and it is small and
light enough at 13 lbs. to be easily moved.
A battery was added to enable the monitor to be used if there is a power outage or to be
unplugged momentarily when moved with the patient from the surgery room to the recovery
room. The battery was not designed to make the Atlas into a transport monitor. The Atlas
monitor should be plugged into AC as much as possible to give you the maximum battery
backup time when there is a power outage. It will maintain unit operation for up to an hour
when power is interrupted if the battery is fully charged.
WARNING: Discharging the battery frequently will shorten the battery
life and will shorten the battery backup time.
IMPORTANT: For a complete description on the function and use of the Atlas, as well as user
safety warnings, cautions, and warranty information, read and understand the Atlas
Operator’s Manual. See the Table 1-1 below for correct Operator’s Manual part #.
Table 1-1. Operator manual part numbers.
Language Part#
English 6200-42E
French 6200-42F
German 6200-42G
Italian 6200-42I
Spanish 6200-42S
Portuguese 6200-42P
Japanese 6200-42J
Chinese 6200-42C
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 1
Section 1 General Information
J
J
Help Information
To assure correct operation and performance all service and repairs must be performed by
fully trained and properly equipped personnel, using genuine replacement parts and correct
procedures. Failure to do so will also invalidate the product warranty.
Welch Allyn Inc.
State Street Plant /Corporate Headquarters
4341 State Street Road
Skaneateles Falls, NY 13153-0220, USA
tel: 1-800-535-6663
315-685-4100
fax: 315-685-3361
www.welchallyn.com/medical/support/tech
Welch Allyn GMBH
Zollerstrasse 2-4
72417 Jungingen, Germany
tel: (011) 49-7477-927186
fax: (011) 49-7477-927193
Welch Allyn UK Ltd
St. Georges House
Vernon Gate, Derby
England DE1 1UQ
tel: (011) 44-01332-206208
fax: (011) 44-01332-206209
mob: (011) 44-0467-301814
MD International
11300 N.W. 41st Street
Miami, FL 33178 USA
tel: 305-669-9003
fax: 305-669-1971
Welch Allyn France SARL
814 rue Charles de Gaulle
77100 Mareuil les Meaux
France
tel: ( 011) 33 1.6009.3366
Fax: (011) 33 1 .6009.6797
Welch Allyn Australia Pty
The Metro Centre Unit 5
38-46 South Street
Rydalmere NSW 2116, Australia
Postal address:
PO Box 132
Rydalmere NSW 1701, Australia
tel: (011) 612 9638-3000
fax: (011) 612 9638-3500
Welch Allyn Singapore Ltd
300 Beach Road, #25-08
The Concourse
Singapore 199589, Singapore
tel: (011)
fax: (011)
Welch Allyn Japan K.K.
Bon Marusan 8F, 3-5-1 Kanda
inbo-Cho, Chiyoda-Ku
Tokyo 101-0051
apan
tel: (011) 813-5212-7391
fax: (011) 813-3261-7372
65-291-0882
65-291-5780
China Service Center
Room 708 Central Plaza
No. 277 Huang Pi Bei Rd.
Huang Pi District
Shanghai 200003
China
tel: (011) 86-21-63279631
fax: (011) 86-21-63279632
2 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
General Information Section 1
Agency Approvals
ETL Listed
UL2601-1,
CSA C22.2 No. 601.1
IEC 60601-1, AS 3200.1
IEC 60601-1-2
US
The CE mark on this product indicates that it
has been tested to and conforms with the
provisions noted
within the 89/336/ECC
Electromagnetic Compatibility Directive.
Australia EMC Framework Compliance
C
L
D
I
S
E
T
742 27
N344
Warning, Cautions and Notes
All operating and service personnel should be familiar with the general safety information
in this summary. Specific warnings and cautions will also be found throughout the operators manual. Such specific warnings and cautions may not appear here in the summary.
Electrical Shock Hazard
CAUTION
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 3
Section 1 General Information
ATTENTION. Consult accompanying document
Handle With Care
Storage Humidity. Refer to technical specifications in operator's
95%
MAX
for more details.
Storage temperature. Refer to technical specifications in operator's
manual for more details.
Lead Acid Battery. For disposal see maintenance
section in opertor's manual
PB
4 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
General Information Section 1
Product Model Number Structure
621S0-E1 ECG, Nonin SpO2, NIBP
621SP-E1 ECG, Nonin SpO2, NIBP, Printer
621N0-E1 ECG,Nellcor SpO2,NIBP
621NP-E1 ECG,Nellcor SpO2,NIBP, Printer
622S0-E1 ECG, Nonin SpO2, NIBP, Temp, Respiration, Battery, RS232
622SP-E1 ECG, Nonin SpO2, NIBP, Temp, Respiration, Battery, RS232, Printer
622N0-E1 ECG, Nellcor SpO
, NIBP, Temp, Respiration, Battery, RS232
2
622NP-E1 ECG, Nellcor SpO2, NIBP, Temp, Respiration, Battery, RS232, Printer
623SP-E1 ECG, Nonin SpO2, NIBP, ETCO2, Temp, Respiration, Battery, RS232, Printer
623NP-E1 ECG, Nellcor SpO2, NIBP, ETCO2, Temp, Respiration, Battery, RS232, Printer
Product Structure Meaning:
The first three digits in the product structure sequence designates the model number. The
fourth character in the sequence designates the SpO2. The fifth character in the sequence
designates if it has a printer or not. The first suffix designates the country language when
shipped. The second suffix designates the power cord shipped with the Atlas.
First Three Characters:
Fourth Character: N=Nellcor SpO2, S=Nonin SpO
Model number, 621, 622, 623
2
Fifth Character: P=Printer, 0=No Printer
First Suffix:
E = English, F= French, G= German, I= Italian, S= Spanish, P= Portuguese C =
Chinese,
J= Japanese
Second Suffix:
1 = US, Canada, Japan
2 = European
4 = United Kingdom
6 = Australian
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 5
Section 1 General Information
623xP Main Menu Architecture
Figure 1-1. 623xP Main Menu Architecture.
623xP
Date/Time
Wavef orm
screen
Date/Time
Screen
Screen
Trend
Screen
Set date & time
Advanced
Configuration
Co
2
Reset
Save
Settings
Service Mode
Screen
Advanced Configuration Screen
Language
Silence duration
ECG gain
ECG lead set
ECG speed
ECG bandwidth
Initial pressure
MAP
Second trace selection
Temperature units
Respiration speed
units
CO
2
Print on alarm
(only with software Rev.
BB.2.2000 or higher)
Service Mode Screen
Verify manometer
Reset to factory defaults
Battery test
Calibrate Co
CRT test pattern
Printer test pattern (Models 621SPand
LED test
Button test
Display A/D channels *
2
621NP only)
NOTE: The Print on alarm function in Advanced configuration mode screen is only
available with software version BB.2.2000 and higher.
* NOTE: The Display A/D channels function in the Service Mode Screen only allows
you to view system information by pressing the SET button. It does not allow
you to change system settings.
6 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
General Information Section 1
622xP Main Menu Architecture
Figure 1-2. 622xP Main Menu Architecture.
622xP
Date/Time
Waveform
screen
Date/Time
Screen
Screen
Trend
Screen
Set date & time
Advanced
Configuration
Advanced Configuration Screen
Language
Silence duration
ECG gain
ECG lead set
ECG speed
ECG bandwidth
Initial pressure
MAP
Second trace selection
Temperature units
Respiration speed
Print on Alarm
(Only with software Rev.
BB.2.2000 and higher.)
Service Mode Screen
Save
Settings
Service Mode
Screen
Verify manometer
Reset to factory defaults
Battery test
CRT test pattern
Printer test pattern
LED test
Button test
Display A/D channels
(Models 622SP and
622NP only)
*
NOTE: The Print on alarm function in Advanced Configuration Screen is only
available with software version BB.2.2000 and higher.
NOTE: On models 622S0 and 622N0 delete the Print test pattern function in the
Service Mode Screen. Model 622S0 and 622N0 do not come with printers.
* NOTE: The Display A/D channels function in the Service Mode Screen only allows
you to view system information by pressing the SET button. It does not allow
you to change system settings.
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 7
Section 1 General Information
621xP Main Menu Architecture
Figure 1-3. 621xP Main Menu Architecture.
621xP
Date/Time
Waveform
screen
Screen
Trend
Screen
Set date & time
Advanced
Configuration
Advanced Configuration Screen
Language
Silence duration
ECG gain
ECG lead set
ECG speed
ECG bandwidth
Initial pressure
MAP
Second trace selection
Print on Alarm
(Only with software Rev.
BB.2.2000 and higher.)
Date/Time
Screen
Service Mode Screen
Save
Settings
Service Mode
Screen
Verify manometer
Reset to factory defaults
CRT test pattern
Printer test pattern
LED test
Button test
Display A/D channels
(Models 621SP and
621NP only)
*
NOTE: The Print on alarm function in Advanced configuration mode screen is only
available with software version BB.2.2000 and higher.
NOTE: On models 621S0 and 621N0 delete the Print test pattern function in the
Service Mode Screen. Model 622S0 and 622N0 do not come with printers.
* NOTE: The Display A/D channels function in the Service Mode Screen only allows
you to view system information by pressing the SET button. It does not allow
you to change system settings.
8 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
General Information Section 1
Atlas System Block Diagram
Figure 1-4. Atlas System Block Diagram
15X7
31 LEDs
24
Keys
EKG
X5
Temp
Primary
Sensor
CO2 Sensor
CRT SubSystem
CO2 SubSystem
Motor
Driver Motor
Configuration
EEPROM
Print Head
Clock, Load
AT90A4414
8 bit
Controller
Strobe
SPI
Printer
Subsystem
GPIO
3-wire SPI + nine
chip select
Timer 2
LED
Drivers
Front Panel
Front End
P
W
EKG +
Key
Temp
(Isolated)
Board
PW
NIBP
Front End
5 Volt Video Signals:
H-Sync, V Sync, Video
4M X 16
SDRAM
Local System Bus
Address,Data,Control
512 X 16 Flash
Bus Config.
Register
Motorola CPU
MPC823Z3
GPIO
GPIO
UART-2
UART-1
ON,OFF
ACON,
SYNC
2
TTL
RS-232
Power
Supply
NIBP
Pnuematic
Control
SPO2
Sub-System
(Isolated)
RS-232
Drivers
(Isolated)
Battery
Drivers
Valv e
PumpSPO2
Sensor
Rs-232
Test
AC
Port
Line
TTL
RS-232
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 9
Service Section 2
Incoming Inspection
NOTE: Use the following guidelines when unpacking the monitor from its shipping carton.
1. Before opening the monitor shipping carton, check for damage.
2. If damage is apparent, stop unpacking the carton and contract the shipping company for
further instructions. If the carton is intact, unpack the monitor.
3. With the monitor out of its carton, check to see that all the items listed on the packing
slip are in the shipping carton. See table 2-1 below.
Table 2-1. Atlas Packing List.
Qty. Description
1 Warranty card
1 Adult Durable 1pc. Cuff
1 Large Adult Durable 1pc. Cuff
1 5ft. Stra ight Hose
1 ECG Patient Cable (Three Lead)
3 ECG Lead Wires
1SpO
1ETCO
1ETCO
1 Nasal Canula 623 only
1Atlas Monitor
1 Detachable Power Cord
1 Printer Paper Roll
1 Operation Manual
1 Skin Tem perature Probe 622/623 only
Sensor/ Finger Clip
2
Water Trap 623 only
2
Scrubber 623 only
2
4. If an item is missing, first check the carton, then check with your receiving department. If necessary
contact Welch Allyn at the address and phone number shown on Section 1.
5. Clean and disinfect by following the instructions printed in the Operator Manual.
NOTE: Perform all functional tests as listed in Section 3 before and after servicing.
Operate the Atlas to verify the customer complaint before making any changes to the unit.
Call the customer if the complaint is unclear.
If the unit has caused or is suspected of having caused an injury of any type: DO NOT
DISASSEMBLE OR REPAIR THE UNIT IN ANY WAY. Contact Welch Allyn Customer
Service immediately.
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 11
Section 2 Service
Calibration and Maintenance Schedule
The Atlas Monitor must be serviced by authorized Welch Allyn personnel or agents at 6
month intervals. Maintenance requirements are specified for 6 month and 12 month service
intervals. The monthly CO2 Reset operation can be performed by the user.
Service Interval Maintenance Requirements
Every 6 months: CO2 Calibration
Every 12 months: BP calibration, CO2 reset, battery voltage calibration,
printer adjustment,and temperature calibration.
Complete functional test
12 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Service Section 2
Table 2-2. Tools Required for Service.
Description Part# Company
100cc Test Volume T-112189 Welch All
500cc Test Volume T-112854 Welch All
T-10 TORX screwdriver XTD-10 Xcelite brand
7/16" dee
S
queeze Bulb and Valve 5088-01 Welch Allyn
Calibrated Manometer (0-10PSIG) Di
Bio-Tek (NIBP TESTER) BP Pum
Pneumatic Tubin
Pneumatic Tubin
"Y" Fittin
"T" Fittin
Nonin Patient Simulator 8000S Nonin
Nonin Cable 5200-52 Nonin
Calibrated Thermome ter for 90F to 115F ran
LG, Adult Cuff/Ba
Nellcor Patient Simulator For atlas with "MP
204/205 S
Nellcor Patient Simulator "MP 506 PCB ONLY " SRC-MAX Nellcor
Nellcor Sensor Cable "Purple Connectors" will work
on all Atlas units with 204/205/506 S
Nellcor Sensor Cable "Gray Connectors" "For Atlas
units with MP 204/205 S
ECG Simulator with Im
ECG Patient Cable (5 lead AHA) 6200-02 Welch All
ECG Patient Cable (5 lead IEC) 6200-04 Welch All
ECG leads, 5 Lead (IEC) 6200-08 Welch All
ECG leads, 5 Lead AHA 6200-06 Welch All
Certified Gas "10% CO2,10% O2, balance N2"
ETCO2 Water Tra
ETCO2 Scrubber 6200-21 Welch All
ETCO2 Adult Nasal Sam
Surface Sensor, Tem
Atlas Re
Printer Pa
Digital Multimeter with 10mV accuracy on a 10V
scale; 10A Ran
Ad
Battery cable assembly 620174-1 Welch Allyn
Atlas interface cable to PC 6200-60 Welch All
PC with Windows 95 and above and with
HyperTerminal serial port software
1/4" Mono Phono Jack
1000 Ohm
1200 Ohm
1350 Ohm
1540 Ohm
1870 Ohm
p socket for Temperature Port nut Generic 1/4" drive
gimano 1000 Netech
p Bio-Tek
g 5200-19 Welch Allyn
g (coiled) 5200-19M Welch Allyn
g "Optional" 9586TPK4 Welch Allyn
g (3) 9858TPK4 Welch Allyn
ge 1002-3FC ERTCO
g 5200-02 Welch Allyn
pO2 PCB ONLY " SRC-2 Nellcor
pO2 PCB DEC-8 Nellcor
pO2 PCB only"EC-8 Nellcor
pedance Respiration 214B DNI Nevada
0304724SRBD Scott Medical Products
p (package of 5) 6200-20 Welch Allyn
ple Line 6200-22 Welch Allyn
perature 6200-15 Welch Allyn
pair and Calibration Software 620538 Welch Allyn
per - Case 6200-40 Welch Allyn
ge
justable DC power supply 5A @ 7V
Part of Windows 95 &
above
precision resistor 1%
precision resistor 1%
precision resistor 1%
precision resistor 1%
precision resistor 1%
yn
yn
yn
yn
yn
yn
yn
yn
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 13
Section 2 Service
Setting Date and Time
NOTE: Check date and time before doing any calibration. Set date and time if incorrect. Set
time and date as follows;
1. Turn Atlas on.
2. Press CLOCK button next to power on button to check date and time. Use the far right
SELECT button to scroll. Highlight the date or time that needs changed.
3. Press the SET button to adjust date and time.
4. Press CLOCK button to exit.
Pangea Communication Protocol
The Pangea Communication Protocol allows interaction of the Atlas with the computer
through the serial interface port. A prompt is emitted at the computer screen when the
instrument powers up and is ready to accept commands. The prompt is Pangea>. A prompt
is emitted after the completion of each pangea command. Pangea commands are case sensitive. They are in English only.
BP Calibration
Required material.
1. 500cc vessel 4. Calibrated digital manometer
2. Squeeze bulb with one-way valve 5. Tubing and T fittings
3. PC with HyperTerminal 6. Serial cable
NOTE: To start HyperTerminal you must have Windows7 95 or higher installed on your
computer.
1. From the Windows main screen follow the following sequence:
Start !Programs ! Accessories ! Communication ! HyperTerminal
2. HyperTerminal setting are:
9600 baud rate, 8 bit word, 1 stop bit
no parity, no flow control
ANSI character set
14 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Service Section 2
3. When you open HyperTerminal you will see a screen similar to the example in Figure
2-1. You will be prompted for a connection description. Choose any name. After you
type in a name click OK.
Figure 2-1. Example of a new HyperTerminal connection.
4. The next window you will see will be the window as shown in Figure 2-2. Click on
Connect using then click on COM1.
Figure 2-2. Choosing COM1 in HyperTerminal.
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 15
Section 2 Service
5. Set the port settings as shown in the example in Figure 2-3. Now click OK.
Figure 2-3. HyperTerminal Port Settings.
6. Connect the pressure meter, bulb, and 500cc vessel to BP port with “T” connectors as
shown in photograph Figure 2-4.
7. Connect the Atlas to PC with serial cable.
8. Turn the Atlas on. Start HyperTerminal on PC. Press the <Enter> key and you should see
a Pangea> prompt.
NOTE: Take no more than 3 minutes for the 50mmHg calibration nor more than 3 minutes
for the 250mmHg calibration as the Atlas will automatically, as a safety feature, open the
blood pressure valve. If this happens you will have to turn the Atlas off then back on again
and restart the calibration again.
16 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Service Section 2
T112854
Pressure
Meter
Figure 2-4. Photo of Atlas BP calibration setup.
T Fittings
Squeeze Bulb
Calibrated 500cc Volume
50mmHg Calibration
1. Enter the following commands at the Pangea prompt.
Pangea> bp valve close <ENTER>
Pangea> bp safety off <ENTER>
Pangea> bp cal 5000 Do not press <ENTER> yet!
2. Raise the pressure with bulb to as close to 50.00mmHg as possible. Now press <ENTER>.
3. Release the pressure.
250mmHg Calibration
1. Enter the following command
Pangea> bp cal 25000 Do not press <ENTER> yet!
2. Raise the pressure with bulb as close to 250.00 mmHg as possible. Now press < ENTER >
3. Enter the following command to save the calibration in the Atlas.
Pangea> nvram write <ENTER>
4. Release the pressure.
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 17
Section 2 Service
CO2 Reset (623xx Models Only)
Required material. 1. Watertrap
2. Scrubber
NOTE: The Scrubber looks similar to a watertrap, but it is filled with white granules. The
scrubber is included with the 623XX models only.
NOTE: Make sure date and time are correct before performing the CO2 reset.
1. Turn Atlas on. Make sure the watertrap and scrubber are NOT attached to the Atlas.
2. Press the DATE/TIME button on the lower right of the monitor. The Set Date and Time
and Other Options menu will be displayed.
3. Press the CO2/RESP ALARMS Off button. The CO2 Reset screen will appear.
4. You will see the following messages on the CRT.
“CO2 Reset”
“Install CO2 scrubber”
“Press Trend to abort”
5. Install the watertrap to the Atlas. Install the scrubber to the watertrap.
6. You will see the following instructions on the screen.
“Warming up” will be flashing on CRT.
“May take up to five minutes” on CRT.
“Press Trend to abort” on CRT.
7. After about 5 minutes you will see on the CRT.
“CO2 Reset”
“Reset complete”
“Remove CO2 scrubber”
“Press the trend button to exit”
8. Remove the CO
watertrap and scrubber.
2
9. Press TREND button to return to idle screen.
Replace watertrap after every six hours of use. Treat watertrap and used CO2
sample lines as bio hazard material!
18 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
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