Welch Allyn CP150 - Quick Reference Guide - Manual (Page 21)

Lead alert or square wave
A dot might be flashing on the lead-status screen. Or one or more leads might appear as
a square wave.
Causes
•
Electrode contact might be poor.
• A lead might be loose.
• A lead might be defective.
Actions
•
Replace the electrode.
• Verify that the patient’s skin has been properly prepared.
• Verify that electrodes have been properly stored and handled.
• Replace the patient cable.
System problems
The electrocardiograph won't turn on when it is plugged in
Causes
•
The AC power connection is faulty.
• An AC fuse is blown.
• There is no AC power.
Actions
•
Check the AC power source.
• Check the AC fuses.
The electrocardiograph won't turn on when it is unplugged
Causes
•
The battery is disconnected or incorrectly connected.
• The battery is low, not charging, depleted, or bad.
Actions
•
Check the battery connections.
• Recharge the battery.
• Replace the battery.
The electrocardiograph shuts down during printing
Causes
•
The battery is low or bad.
Actions
Quick reference guide Troubleshooting 17