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Thermal paper only prints on one chemically treated side. Ensure the roll is installed correctly with the glossy side facing the thermal print head elements.
Artifacts, wandering baselines, and missing leads are typically caused by cable degradation, poor electrode contact, or pre-amplifier component failure. carewell ecg 1101 service manual fix
Never test an opened or repaired unit directly on a human. Always use a certified 12-lead ECG simulator. Block Diagram & Internal Architecture Thermal paper only prints on one chemically treated side
The pre-amplifier stage uses high-pass filtering capacitors to block large DC half-cell potentials from the electrodes. If these capacitors leak DC current, the input amplifiers saturate, causing the baseline to drift off-screen permanently. Replace these high-precision, low-leakage film or tantalum capacitors. 4. Thermal Printer and Mechanical Malfunctions Never test an opened or repaired unit directly on a human
Converts AC mains to DC voltage, manages battery charging, and regulates power to the digital components.
If testing on a patient, ensure the electrodes are clean and that proper conductive gel is used.
