command waiting

[alex.abate]

Hi, I started printing using repetier hosts and everything was fine, half of a job started to give error messages and after the printer give the message "command waiting" and doesn't move. I try to replace the firmware but nothing change.

[William]

Perhaps the reason for the USB cable, you can try to print with an SD card to see if the issue is solved.

[alex.abate]

thanks William I'll try. Now the new thing is that the machine, after waiting message, loose the heating plate and the second extruder temperature is 100°C without command.

[William]

Could you upload pictures of the wiring of mainboard?I also need to confirm what is displayed on the monitor.

[alex.abate]

Hi, I print from SD and everything works right. still the problem with PC.
How can upload an image?
thanks

[Admin]

I think there may be the COM port is occupied in the middle of printing, of course, may also because of the USB cable and the interface.