Hi guys. I want to callibrate the volt per division on my CH X (CH 1) on my old oscilloscope but I am not able to find a service manual that shows the trimmer pot locations. Does anyone possibly know where I can locate a service manual for my device (Im not too sure one actually exists)

My oscilloscope in question is a Pintek PS-605 (it has simply been rebranded to Dick Smith in the photo)

Thanks in advance guys. Any help would be appreciated!

 

Only thing I can find is this on YouTube.

 

It may be the same pot's as Alan's youtube video on the 'Heath" branded 25Mhz scope he calibrated, same manufacturer and looks the same (different model number and mine is 60Mhz not 25Mhz). This is the closest I've found though so far to something I could use

(step 5. vertical sensitivity in vertical amplifier adjustments 07:25s in video VR334 for CHA)

 

I think I've found it. It is the same board layout as the BK Precision 2160A (VR 334 Vertical Gain adjust for CH A)