I serviced one of those many years ago. The phono section is exactly the same as what is seen in the Marantz 7C preamp. IIRC the line section is also the same, sans tone controls.
Are you having troubles with it or do you just want a schematic because? If you need it serviced, we still do that sort of work. Its easy to work on and any technician that is good with tubes should have no problems sorting it out even without a schematic. BTW It is getting old enough that replacing the filter capacitors in the power supply is not a bad idea.
Are you having troubles with it or do you just want a schematic because? If you need it serviced, we still do that sort of work. Its easy to work on and any technician that is good with tubes should have no problems sorting it out even without a schematic. BTW It is getting old enough that replacing the filter capacitors in the power supply is not a bad idea.