Troubleshooting - ZOLL M Series Service Manual

M Series Service Manual

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
ECG LEAD OFF message displays.
(3, 5, 12 lead cable)
Recommended User Action
• 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.
Recommended Technical Action
• 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.
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