(English is not my native language so there will be spelling errors or grammar errors, please bear with me.)
Hi everybody,
After 2 months of assembly, and correction of X, Y, Z axis is finally completed.
Now there is a problem, and did not respond in the extruder.
Extruder how to test it?
I use LCD Controller and Repetier Host the manual control does not respond.
Repetier Host Response: echo: cold extrusion prevented, adjust your temps or lower min temps in your firmware.
firmware is Marlin-for-rostockmax-ramboLCD 2013-03-28
Why is my LCD Controller can not standalone prints!!

LCD Controller off when I put out the USB cable.
What happend? Too much pressure?
sanbenny888