XR-640 No Vacuum Power Only When Printing Starts

[emediamt]

Hello fellow Roland users,
I have an XR-640. Recently the vacuum fan shuts off whenever it begins printing.
Currently the Vacuum Fan is set to "Auto". If I switch it to any other setting (0%-100%), it turns on.
It will stay on until the printing starts and then it shuts off completely. If anyone could shed some light on the possible cause, I would much appreciate it.

thank you,
Eric

 

[Joseph44708]

I keep the Vaccum setting at 100% on both my XR-640 printers.