5TroubleshootingThis chapter provides guidelines for troubleshooting issues with the device. It providesthe following sections:• ECG Data Noise• General Fault Isolation• Power-up Self Test• Visual Inspection• Event Logging• Diagnostic Tests• Error CodesECG Data NoiseSeveral factors can result in unacceptable noise levels on ECGs.• Environmental factorsInterference from electromagnetic equipment (such as radios, cell phones, or othermedical equipment) can result in excess noise. Verify the environment in which thedevice is being used meets the minimum EMC requirements. See “EMI/EMC/RFSafety Information” on page 18 and Chapter B, “Electromagnetic Compatibility(EMC)”, for more information.• Inadequate patient preparationImproper patient preparation or electrode placement can result in excess noise onECGs. Verify the patient’s skin has been properly prepared and that the electrodeshave been placed correctly. Refer to Chapter 4, “Patient Preparation,” in the MAC™2000 ECG Analysis System Operator’s Manual for more information.• Acquisition module failureRun the Acquisition Module diagnostic test to ensure that the acquisition board isfunctioning properly. See “Testing the Acquisition Module” on page 51 for moreinformation.• Leadwire, cable, and electrode failure2053535-003C MAC™ 2000 ECG Analysis System 135
