Sony KDP-51WS550 Operating Instructions Manual page 19

Basic Connections: Connecting a Cable or Antenna
The way in which you will connect your TV varies, depending on
how your home receives a signal (cable, cable box, antenna) and
whether or not you plan to connect a VCR.
Gable or Antenna Only 19
Q No cable box or VCR
Gable and Antenna Only 20
Q No cable box or VCR
Gable Box and Cable Only 21
Q Cable box unscrambles only some
channels (usually premium channels)
Q No VCR
Gable Box Only 22
Q Cable box unscrambles all channels
13 No VCR
Ifyou are connecting a VCR
Q See the connections described on pages 24 and 26.