Welch Allyn Atlas Service Manual page 57

Section 3 - Troubleshooting
Connect a 5 lead cable set to the simulator and to Atlas.
Configure the simulator for NSR 100BPM and Impedance
Respiration,
Plug the cable into Atlas.
Press <DATE/TIME> <TREND>
Get Advanced Configuration menu.
Press <Select> to highlight ECG lead set
Press <Set> to:
Set ECG lead set to 5 wire
Set ECG gain to Automatic
Set ECG speed to 25mm/s
Set ECG bandwidth to Monitor
Set Second trace selection to ECG
Press <TREND> to return to idle screen
Should see:
ECG cascading onto second line
Scale bar on left of top line
Heart rate displayed as set on simulator
Lead Selected = II
Heart rate tone high pitched
If ECG waveform not seen
If ECG waveform not cascading
In Scale Bar not on top line
If Heart Rate not displayed (or displayed incorrectly)
If Lead Selected not shown
If Heart rate tone not heard
Re-install software
Replace CPU board
Replace Main board
Press <LEAD SELECT> and step through each of the lead
settings
Should see:
Different looking ECG waveforms
Heart Rate will go to dashes and alarms on some
leads
Set lead selected to II
Press <DATE/TIME><TREND>
Get Advanced Configuration menu.
Press <Select> to change Second trace selection to
Respiration
Press <TREND> to return to idle screen
Should see:
ECG on top line
Scale bar on left of top line
Heart rate displayed as set on simulator
SERVICE MANUAL 6200-43E REV. A
3.4 Diagnostic Tests
ECG 1
WELCH ALLYN ATLAS MONITOR 31