Sony PCV-RZ49G - Manual (Page 68)

About using your set-top box with the Media Center remote control
If you use a set-top box with your cable or satellite TV signal, then you must make sure that the Media C enter remote can control it.
You need the following materials:
 The set-top box and the remote you use to control it*
 The Media C enter remote control
 Remote sensor
 IR control cable
For information about your particular configuration and to make sure that your devices are connected correctly, refer to your hardware
documentation.
* You need to use a set-top box only if your TV signal provider requires it.
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