: Detailed safety information can be found in the Operator's Manual - Rehabmart.com

For deeper technical repairs, the service manual for similar Carewell models (like the ECG-1103B) highlights critical internal modules: Power Supply Module:

Inspect the ECG patient cable for internal wire breakage or frayed sheathing.

Install a new roll of thermal paper and ensure the paper cover is closed properly . Clean the thermal printer head if the graph is faded . Patient movement or electrode issues

Ensure proper skin prep (clean/dry skin, hair removal) . Move the device away from phones or fluorescent lights and ensure the machine is properly grounded . Detached electrode or damaged cable

This often points to internal power board instability or loose display ribbon cables. Maintenance Checklist