Newtronics 200pc Function generator

Hi.
I have been searching desperately for a service manual for this function generator. It has been going on for almost 4 years now, without any luck. I need to calibrate it.
Cant find any info on the net, as the company doesn't exist, or has gone under a new name.
Hoping someone might have some leads for me..
Thank you.

Here's one for sale on EBay (maybe somewhat different than yours...).

View attachment 67086

Maybe you can PM or email the owner and get him to make a copy of the manual(s) you need (if he has them).

Worth a shot,anyway

Note his location.

<EDIT> Oops. Just noticed it says "0 available". Well, he may still be able to lead you to one of the buyers.