Hello,
Let me clarify some things here.
The end user for me is the company for whom i have designed the machine.
The end user for the company are doctors.
So basically i have to write the manual for the company ,doctors are not my headache.
I have to mention all the trouble shooting parameters
so that it will easy for them to debug the hardware

I got some good ideas from andrew.

Anymore points to add

Thanks,
Pravin