Well I read the other thread just as I was offered too good a deal on a 44" machine.http://www.luminous-landscape.com/forum/index.php?topic=55608.0
Then I see my new 44" has the same error code 2.1:10
I then searched the web and spoke to several people that work for HP.
I was told that to have a guaranteed solution,
a service call is a bit over a grand.
In asking about the particular problem, two different people mentioned the carriage PCA or the trailing cable as being common sources for this error code.
I changed the trailing cable as that was the least expensive and in stock,
the carriage test still fails W/ 2.1:10 so I will wait for the carriage PCA to be back in stock at the source,
order through an authorized online vendor,
and for about $125 will have ruled out those two common causes for the error,
will report back as soon as I secure a carriage PCA-
Did you know some online vendors buy Z3100 parts used from the public?
I wonder what I could part out this thing for?
I'm excited to try and get it going.
Never can tell, maybe an inexpensive solution can be found.
I really enjoy reading and following the manual directions.