Fukuda Denshi DS-7001, Service Manual

Page: 116 / 151

Troubleshooting
The following troubleshooting tips are for the DS-7001 Bedside Monitor. Other than the
following, problems of other devices such as the central monitor can be considered.
Refer also to the operation manual for the used devices.
ECG
ECG waveform contains noise.
Cause 1 : The electrode contact is poor.
Electric blanket or other noise source is near the patient.
Solution : Attach the electrodes firmly.
Replace the lead cable if defective.
If any noise source is near the patient, locate it away from the patient as much as
possible.
Set the “Wide AC Filter” to Wide or Adp Wide .
Change the noise filter mode. (Default: Weak)
Note : Selecting Strong for the noise filter mode will decrease the QRS amplitude and
may result in not counting the heart rate.
Cause 2 : EMG is interfering.
Solution : Change the electrode site to a location where EMG will less likely to interfere.
Heart rate is not counted. Heart rate is low.
Cause : The ECG waveform amplitude is below the QRS automatic detection level (0.3mV).
Solution : Change the electrode site, or select a lead with higher QRS amplitude.
Heart rate is not counted, and “LEAD OFF” message is displayed.
Cause : The electrode of the displayed lead type is detached, or is not making good
electrical contact with the skin. If the lead type is not displayed, 2 or more
electrodes are detached.
Solution : Check the electrode application.
Replace the electrode, or check the lead cable.
Artificial pacemaker is not displayed.
Cause 1 : On the admit menu,
No
is selected for the pacemaker use.
Solution : Select Yes for the pacemaker use.
Cause 2 : On the ECG configuration menu, “Pace. Pulse” is set to
Color .
Solution : Select
ON
or
Color
for “Pace. Pulse”.
Automatic gain is not properly performed.
Cause : The automatic gain is influenced by QRS detection result. If QRS detection fails,
proper automatic gain cannot be performed.
Solution : Select a fixed gain for the waveform.
7 － 2