[Histonet] manual setup for Reichert-Jung 2050 needed

[C.D.G.]

Hi all:
i received a Reichert-Jung microtome 2050 model. I need instructions for its operation. 
The electronic panel displays "stop" illuminated and I dont know how to continue, as other
buttons seems not to operate. Any help of people who has worked or know to operate this
motorized microtome will be appreciated.
My kind regards,
Carlos Defeo
Histotechnologist