Question about Welch Allyn Cardio Perfect EKG ECG Machine Pc Based 12l

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I have a Welch Allyn cp100 ECG machine and I'm getting a 'Lead Off' error on line V3 despite doing all the suggested checks (eg attached correctly, patient not sweating etc)

All other leads working fine and readings coming off correctly. All connections (including V3) are secure. Electrode tabs attached (device and electrodes brand new)

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Posted on Jul 06, 2010

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Posted on Aug 11, 2010

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SOURCE: We use a Welch Allyn

You have wrongly connected the limb leads. Limb leads are those leads which we connect in the arms and legs.
In your case the leads in the arm have been interchanged. Thats why you get the message and prints inverted avR and avR.
check the leads and properly place it.

Posted on Apr 18, 2011

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Welch Allyn CP200 startup screen fine, then 3 beeps and screen changes to coloured bars. Reset button makes no difference. I note that the battery is missing. Is that the fault?

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
I do recall that I've seen details about this ECG machine by the above site, long ago. Search for it by type in the brand name 'Welch Allyn'; in the search box at the top right of the Display Window of that site.

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Do u have a picture on how to put leads on a pt for a Schiller AT-2

Watch the following picture and video to know about the 12 lead ECG placement.



Sep 12, 2011 | Schiller Welch Allyn Cardiovit At 2...

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Do you have a poster for correct lead placement for AT-2 plus ECG? thanks!

If you need to know how to place the leads then whach the following video. All 12 channel ecg machines have the same lead placement

Jun 23, 2011 | Schiller Welch Allyn Cardiovit At 2...

1 Answer

Welsh allen at-2 lead light is on however ekg machine will not give tracing

There is some problem with the patient cable. Any one of the lead is broken inside. AT2 senses the presence of all the lead first and then only it will acquire the ECG and store it in its memory,after that it will print the ECG.
If any one of the lead have some problem. it will not go to the next procedure. and will indicate the lead off light.

1. check are you connected the lead correctly.
2. clean the electrode properly.
then try one more time. if problem remains. you have to replace the patient cable.

Feb 04, 2011 | Schiller Welch Allyn Cardiovit At 2...

1 Answer

My Welch Allyn CP-100 ekg will not print-does it use toner or can something else be wrong

it doesn't use any toner. it give print using a thermal printer. if every thing working fine and not getting the print out , the first check the paper u used. it should be a good quality wax or chemical paper.
the thermal printer head can become faulty, if printout is not coming. also check the battery.

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Schiller Cardiovit AT-2 Cardiovit CH-6340

I have (2) Welch Allyn, 3700/B-2211 Scanteam scanner available for sale.

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A CP100 ECG. Replaced battery. Still won't turn

could be the charging circuit. You need to make sure the new battery is actually charging through the machine. You can use a volt meter to do this. If you need more assistance you can email me at

Aug 03, 2009 | Medical

2 Answers

I have the Welch Allyn PCR 100 and have never been able to get it to produce an ekg even though I returned it and they had it working, when I hook it up it just doesn't work. Any suggestions?

Could be bad\expired electrodes, mislabeled lead wires and the patient cable is loose. Also, if one lead is intermittently working it may not show any leads on the report because that one lead is bad. If it is an intermittent problem it could work just fine for somebody else and not you. I can work on this for you if you need more help.

Mar 26, 2009 | Welch Allyn Pcr-100i Pc-based Resting Ecg...

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