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on Jan 2, 2013
on Jan 3, 2013 by Raclegg
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I am getting an Error 20, Line Down error on five of six N3300A electronic load mainframes that we have. Each of the N3300A mainframes has six N3302A modules and all are connected to 120VAC. What does this error mean?
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Jan 3, 2013 3:20 PM
First let me tell you what the failure means. I checked the code, it means that the mainframe is definitely having a problem communicating with the module(s). Possibly the module is dead or cabling is bad. If this is a new setup can you check that all the interconnect cables inside the mainframe that run between the modules are fully seated and properly lined up. Also make sure the pins are not bent inside the connectors in the modules. If you have 5 out of 6 mainframes it sounds more like a setup issue than a bad mainframe issue. If you are still having problems can you post a picture of the cabling with the top cover off of one of the bad units.
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