Schematic needed for Carver CT-27v Preamplifier

Hi:

I am trying to restore a broken Carver CT-27 Preamplifier with faulty relays and one dead channel. Unlike the earlier model (eg CT-26V) poor quality mass produced Chinese model, this one seems to be very well designed and is a pleasure to work on.

Does anyone have a schematic or Service Manual which they can share?

Thanks in advance
Mayank