Troubleshooting
2031504-159D MAC™ 800 3-17
5. Press the Enter key to select the Start Test button.
For each lead wire, the test results are displayed.
If the Connected message is displayed, the lead wire passes the
test.
If the Disconnected message is displayed, the lead wire fails the
test.
6. Press F6 (Cancel) when the test is complete.
7. Replace every lead wire that failed the test.
8. Repeat the test.
If the lead wire still fails the test, replace the mainboard assembly as
described in “Replacing the Mainboard Assembly” on page 4-16.
Equipment Problems
ECG Data Noise
If the acquired ECG data displays unacceptable noise levels:
When troubleshooting noise or signal quality, be sure the problem
is not being caused by poor skin preparation, or placement and
condition of electrodes.
Careful skin preparation is the key to an interference-free ECG.
Signal quality is indicated using Hookup Advisor. Hookup Advisor
can be turned on or off in the ECG menu. Select Main Menu System
Configuration Resting ECG Setup > Page Down.
Check for defective or date-expired electrodes.
Check for defective, broken, or disconnected leadwires.
Run the Acquisition Module Tests in the Diagnostic menu and make
sure all lead wires pass the noise test.
Refer to “Acquisition Module Test” on page 3-10.
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