If you want to get the audio of tv program through the AVR then your tv should have a HDMI out port. Because you have connected the cable directly to tv. You didnt mentioned anything about your tv (make and model number). So its not possible to give you a final answer.
Check on thing isthere ia nsy RCA audio output in your tv. All tvs will have RCA audio out put. Wich you can connct to the TV /CBL in put of your AVR using a RCA cable. Then select the TV/CBL Using the SOURCE SELECTOR on the frond of the AVR.
Another Way is if there is optical out put on your tv then you can connect the optical out to the AVR's OPTICAL IN 1 or 2 Using an optical cable. Then you have to got to the input assignment menu of
the AVR and then you have to assign the optical 1 or optical 2 to wich you have made the connection. Here i have added the link to the user manual of the AVR. Check the page number 22. Which shows the menu tree. To assign the optical input for TV/CBL you have to go to the Input set-up there you will find the ASSIGN on the under CD,AUX etc menu.
This setup required if you use OPTICAL input of the AVR. Check the page number 14 for the connection diagram.
IF you are going to use RCA cable the simply connect one end of the rca to TV's AUDIO OUT and other end to the TV/CBL input of the AVR. And then select TV/CBL.
Here i have added the picture of RCA cable that you nee for making such connection between TV and AVR. USER MANUAL