I have a AV203 system connected to Comcast using the newest X1 Box receiver on a Samsung SmartTV. Newest remote does not have a AUX nor Setup buttons (only TV Input button).

To program your remote follow these steps.
1-Turn on the receiver
2-press the "AUX" device key on the remote control
3-Press and hold the "setup" button until the aux key blinks twice, than release the setup button.
4-Enter one of the following codes
30176 or 31176
5-If you entered the code correctly, the AUX key will blink twice and turn off. Now aim the remote at the receiver and press power. If the device turns off, than the code functioned properly. If the receiver does not respond, restart the procedure and enter the other code provided
Good Luck

After much research, here is a step-by-step for getting your Vizio Soundbar to work with the Comcast remote using EFC codes (mine is the newer charcoal grey one, works great!)

Aux - Setup (2 blinks) - 11144 (2 blinks)

Aux - Setup (2 blinks) - 994 - Setup - 00169 - Vol Up - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00168 - Vol Down - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00037 - Mute - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00165 - Power - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00164 - Input - Should get 2 blinks

These are optional, I didn't use them:

Aux - Setup (2 blinks) - 994 - Setup - 00036 - <button to use for TVOL> - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00101 - <button to use for TSHD> - Should get 2 blinks

Then set the volume control on the remote and other settings according to the Remote's manual.

ENJOY!! Hope this helps someone...

After much research, here is a step-by-step for getting your Vizio Soundbar to work with the Comcast remote using EFC codes (mine is the newer charcoal grey one, works great!)

Aux - Setup (2 blinks) - 11144 (2 blinks)

Aux - Setup (2 blinks) - 994 - Setup - 00169 - Vol Up - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00168 - Vol Down - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00037 - Mute - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00165 - Power - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00164 - Input - Should get 2 blinks

These are optional, I didn't use them:

Aux - Setup (2 blinks) - 994 - Setup - 00036 - <button to use for TVOL> - Should get 2 blinks

Aux - Setup (2 blinks) - 994 - Setup - 00101 - <button to use for TSHD> - Should get 2 blinks

Then set the volume control on the remote and other settings according to the Remote's manual.

ENJOY!! Hope this helps someone...

After much research, here is a step-by-step for getting your Vizio Soundbar to work with the Comcast remote using EFC codes (mine is the newer charcoal grey one, works great!)
Aux - Setup (2 blinks) - 11144 (2 blinks)Aux - Setup (2 blinks) - 994 - Setup - 00169 - Vol Up - Should get 2 blinksAux - Setup (2 blinks) - 994 - Setup - 00168 - Vol Down - Should get 2 blinksAux - Setup (2 blinks) - 994 - Setup - 00037 - Mute - Should get 2 blinksAux - Setup (2 blinks) - 994 - Setup - 00165 - Power - Should get 2 blinksAux - Setup (2 blinks) - 994 - Setup - 00164 - Input - Should get 2 blinks
These are optional, I didn't use them:Aux - Setup (2 blinks) - 994 - Setup - 00036 - <button to use for TVOL> - Should get 2 blinksAux - Setup (2 blinks) - 994 - Setup - 00101 - <button to use for TSHD> - Should get 2 blinks
Then set the volume control on the remote and other settings according to the Remote's manual.
ENJOY!! Hope this helps someone...

If you only have the comcast receiver and a TV, take the input (wire from outside the house or outlet on wall) and screw that onto the input of the comcast receiver. Take another wire (or RCA, component connecters or whatever means the box and TV provides) and go from the output of comcast receiver to the input of the TV. Set the TV input mode (on the TV itself or by the remote) to whatever mode you hooked up the cables to (video 1, aux, video 2, etc) and you should see a picture. From there use the comcast remote to change channel. If you use the round cable (rg56 or rg59) you will not need any other connections between the TV and the box. The video and audio are broadcast on the same line. If you use RCA (yellow red white) connectors, yellow is video, white and red are audio) you will need all three wires from comcast receiver to TV. I hope this helps and good luck!

I have a vizio universal remote and the code that works the vizio sound bar is the first one listed under audio/vizio 0660

30176 is the code you need . Press Aux and then hold setup until Aux lights up. Enter code. If you want the remote to control the receiver all the time, press Aux and then hold setup until Aux lights up. Enter 993 then press Aux. Aux will flash, now press Cbl and Aux should light up when you use the volume.

Sorry, the Red Button won't work, but you can map the A button on the Comcast remote instead. It's almost the same thing... Your fingers will barely know the difference.

1. Press the Aux button at the top of the remote.

2. Hold the Setup button until the Aux button flashes twice.

3. Enter 994 on the keypad. The Aux button will flash twice again.

4. Now push the Setup button once. Enter 00001.

Finally, push the A button The Aux button will flash twice. You now have the A / Select / OK / Green button mapped on the Xbox360.

--If you want to switch the A button back to default, just do the same sequence but this time push the A button twice.--

The Remote w/ On Demand buttons, it's the same as the DVD player code 1932. Hit the AUX button, press and hold SETUP until AUX blinks and enter 1932. Press the power button and it should turn off the reciever.

*UNLOCKING VOLUME CONTROL* You must until your AUX volume control in order to use your Comcast remote. To do so, you must select AUX, press and hold SETUP until AUX blinks. Enter 9-9-3 and press Vol - (down). This should unlock your volume control when you select AUX. I'm not sure how to set AUX as your default setting for volume, unless you were to program your AUX device as your TV and vice versa I'd suspect.
Hope this helps!

Originally Posted by 3FingeredGlove We can make this work. You didn't mention which setup code you're using, or explicitly say whether the OK/Select button is red or gray (the manual you're using is for gray), so these are somewhat generic instructions. Should work, though. This will provide a power toggle function to the Power key.

Use red numbers for the red OK/Select button remote, grey numbers for grey button remtoes.
Temporarily assign setup code 30842 or 0842 to AUX
1) Tap AUX
2) Press Setup until 2 blinks
3) Enter 30842 or 0842The remote should blink twice

Assign NEC1 IR protocol device 210, subdevice 108, function number 203 to Power (you don't need to understand these numbers)
1) Press Setup until 2 blinks
2) Enter 994 (2 blinks)
3) Tap Setup
4) Enter 00051
5) Tap Power (not All On)
The remote should blink twice

Assign setup code 30135 or 0135 to AUX (this is NEC1, 210.109)
1) Tap AUX
2) Press Setup until 2 blinks
3) Enter 30135 or 0135
The remote should blink twice