Binatone MD 750 Service manual required?

Hi,

I have a Binatone MD750 where the handset cannot find the base station. I have checked around the base unit and it appears the micro has ceased to function. The clock is ok but there is no activity on the buses to the memories, I2C or conventional memory.

I am an electronics engineer and would like any service tips or if possible service manual for this unit.

Thank you for any help that you can provide.

Bernard