Baseline draft
Unclear waveform
1. Low power.
2. Patient movement.
1. Low battery.
2. The printer head surface is dirty.
3. The thermal paper problem.
1. Charge the battery.
2. Keep patient still.
1. Charge the battery.
2. Cut off the power, clean the
printer head with alcohol, air
dry.
3. Replace the thermal print
paper with specified one.
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