ZOLL M Series Defibrillator Rev R - Manual (Page 64)

M Series Service Manual
54
Troubleshooting
The following tables show the most common troubleshooting issues and their solutions.
First, attempt to solve the problem with “Recommended User Action.” If these steps do not solve the problem, follow
the steps listed in the “Recommended Technical Action” column.
Reported Problem Recommended User Action Recommended Technical Action
ECG LEAD OFF message
displays.
(3, 5, 12 lead cable)
• Check preparation of ECG electrode site by
cleaning the site, lightly abrading the patient’s skin
and/or clipping the patient’s hair at the electrode
site.
• If electrode gels are dry, replace electrodes with
new ones from a freshly opened package.
• Verify that all leads are attached.
• Set monitor to another lead.
• Verify that the electrodes have not exceeded their
expiration date.
• Try to reproduce the problem using
a simulator.
• Inspect the ECG cables looking for
corrosion or broken connector pins.
• Check the cable for intermittent
connections by flexing the cable at
the yoke and snap connectors.
• Check the cable connection to the
defibrillator.
• Inspect the ECG input connector
and its pins. Replace it, if
necessary.
• Inspect the ECG cable connection
to the system board.
• Inspect the system board ECG
shielding.
• Remove and replace the system
board.