RAngemaster 110 double oven clock is OFF?

Gents
I have a rangemaster 110 NOIR GAS range with electric hot plate in Black. Timer/ clock is off with no display at all.
Ovens still work - I had a problem with sparking - Cables had been severed to lower oven as they pass through the body of the machine - this has been repaired and all light properly . No problems with gas rings.

Question. Can I access the clock from the front by removing the facia. will I have to remove all the knobs etc. Is it likely to be the clock faulty or a wiring problem. Do you have a schematic>

regards
John carden