ZOLL M Series Service Manual page 64

M Series Service Manual
Reported Problem
Displayed HR not accurate.
No artifact present.
Displayed HR not accurate;
artifact present.
Wandering baseline.
Electronic interference.
2-4
Recommended User Action
Verify heart rate flashes with each QRS on display.
• Change lead selection.
• Change ECG size.
• Reposition ECG electrodes.
• Reduce or eliminate ECG artifact due to electrode or
patient cable movement. Route cables so that they don't
pull on electrodes or swing excessively.
• Ensure patient is motionless.
• Check for possible excessive radio frequency
interference.
• Verify a good connection of electrodes to the patient.
• Prepare the patient's skin prior to the electrode
attachment.
• Move patient cables away from other electrical
equipment, especially any RFI source.
• Ensure ECG cable fits snugly in unit.
• Change ECG cable.
• Replace/reposition ECG electrodes.
See "Displayed HR not accurate." above. Note that in 90%
of electrode issues, size and lead changes don't help.
Check for possible excessive radio frequency interference.
Move patient cables away from other electrical equipment.
Recommended Technical Action
• Check for contamination on snaps. Ensure
springs are intact.
• Check for intermittent ECG patient cable or
connector wiring.
• Replace ECG input connector.
• Replace ECG connector to the system board
cable.
• Replace system board.
Same as above example.
• Turn off sources of excessive RFI.
• Move M Series unit away from RFI source.
9650-0450-01 Rev. U