Rear panel, Gnd (turntable ground) terminal, Phono terminals – Pioneer A-109 User Manual

Page 8: Tuner terminals, Cd terminals, Line terminals, Tape 1/cd-r/md rec (out) terminals, Tape 1/cd-r/md play (in) terminals, Tape 2 monitor rec (out) terminals, Tape 2 monitor play (in) terminals