If you look in the manual read the prior pages starting with 31, then at page 33, figure #20 settings, until you get it to read "ZONE A ANALOG INPUT PHON." That may get the gain set for a MM cartridge. This is using on-screen settings.
I'm not 100% sure, but this is where I would start. You may have to read some of the prior settings to get you there. I don't have one, but if nobody else has anything better, give this a shot. A MM phono has a lot lower signal, than a regular component does.
So I'm guessing this may switch the gain to work for a MM cartridge, instead of a higher output device that can also use the same jack. It looks like you do need to do this with the on-screen settings set-up first to do this. Again, I'm not 100% sure, but this seems like the direction to start.
I'm not 100% sure, but this is where I would start. You may have to read some of the prior settings to get you there. I don't have one, but if nobody else has anything better, give this a shot. A MM phono has a lot lower signal, than a regular component does.
So I'm guessing this may switch the gain to work for a MM cartridge, instead of a higher output device that can also use the same jack. It looks like you do need to do this with the on-screen settings set-up first to do this. Again, I'm not 100% sure, but this seems like the direction to start.