LG Stack dryer no heat - manual?

[Wedgeman55]

I have run into a LG Gas dryer in stack - model DLG9588SM - couldn't find the manual on the LG Websight.   Wanted to run it throught a diagnostic.    If anyone has worked on this particular model or has the manual it would be appreciated.    I am pretty, pretty, pretty sure it is the gas valve (lit the first time,   then no heat would'nt light again) but it's a very expensive part and would feel better if I could run it through diagnostic.    Thanks

[jumptrout51]

The diagnostic procedure and component test are found in this manual.
http://136.166.4.200/contents/Laundry/DLG3788/DLG3788_Service_Manual.pdf