Califoria Audio Lab - Aria (CD player)....problems????

HI, I purchased a used California cdplayer model Aria (with valves), I think it is the MK1 version.
I have some questions.
Inside there are two LEDs, one LED turns on after you hear a clickKK... I assume one or more relays switch , the other LED never turns on. It's normal?

Do you know where I can find documentation regarding this device? User manual, service manual....

Some other questions, of secondary importance:

What is the "CM" function button for? See image with yellow arrow.

What is the "FTS" function button for?...see image. When I push this button the relevant LED starts to flash. If I push the button again the LED goes back off.

I attach some images.

Thank you
 

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