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I believe that you call the service center and hold the phone up to the appliance and push the diagnosis button. That probably makes noise like a fax machine or something that tells the service center what is wrong.
Sorry, there was a problem. Please try again later.Yes, SMARTDIAGNOSIS™ is meant to help the LG Service Center diagnose. - Only use this feature when instructed to do so by the call center. The transmission sounds similar to a fax machine, and so has no meaning except to the call center.
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