M3500B/M5500B Service Manual
3
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21
Operational Problems
3
SpO
2
Monitoring
The following table covers problems that might arise while monitoring SpO
2
.
Poor Pads ECG signal quality.
The multifunction pads are not mak-
ing proper contact with the patient.
Check that the pads are properly
applied. If necessary, prepare the
patient’s skin and apply new pads.
The multifunction pads are outdated
or dried-out.
Check the date code on the pads.
Do not open the pads package until
immediately prior to use.
Radio frequency interference (RFI)
is causing artifact.
Relocate or turn off equipment that
may be causing RFI.
QRS beeper inaudible or beeps do
not occur with each QRS complex.
The QRS beeper is configured to
Off
.
Configure the QRS beeper to
On
.
The volume is set too low.
Adjust the volume.
The amplitude of the QRS complex
is too small to detect.
Adjust the size of the ECG.
Fails ECG Test in Diagnostic Mode.
Failure in Pads ECG front end or
signal processing.
1. Replace Power PCA.
2. Replace Control PCA.
Failure in Leads ECG front end or
signal processing.
1. Replace Control PCA.
2. Replace Interface PCA.
Table 3-7 Operational Problems - ECG Monitoring (Pads or Leads) (Continued)
Symptom
Possible Cause
Suggested Solution
Table 3-8 Operational Problems - SpO
2
Monitoring
Symptom
Possible Causes
Suggested solution
No response - no value on screen,
no pleth bar.
Bad internal connection.
Carefully reseat flex cables between
SpO
2
connector and SpO
2
PCA,
and between SpO
2
PCA and Inter-
face PCA. See "Servicing Notes" on
page 4-1.
SpO
2
PCA failure.
Replace SpO
2
PCA.
Control PCA failure.
Replace Control PCA.
Interface PCA failure.
Replace Interface PCA
Reads obviously wrong value.
Same as above.
Same as above.
Noisy/intermittent signal
Same as above.
Same as above.
Summary of Contents for Heartstart XLT
Page 1: ...H E A R T S TA R T X LT S e r v i c e M a n u a l M 3 5 0 0 B M 5 5 0 0 B ...
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