Kenwood Oscilloscope

I am a Electronics student and I have a Kenwood Osicilloscope
Model CS1021 - 20Mhz Duel trace
My project is to repair the C.R.O
I have had no success in obtaining a Service Manual to enable me to continue with my TAF progect .
Is there some one who could help me with this request .Greg

You can buy its service manul from this site for $10. https://www.electronicsrepair.net/digital.shtml (Item No. 62)