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Determining the code that worked for your Scientific-Atlanta AT8550 All Touch Remote To determine the device code that worked for your Scientific-Atlanta AT8550 All Touch Remote, follow the steps below:

1. Press and hold the Select button while also pressing the device button for the device you successfully set up (AUX, DVD, VCR, TV, CBL) until all the device buttons blink twice.



2. Press 990.


The device button you selected in step 1 blinks twice.


3. Press 1 and then count the number of times the device button blinks.
   
   The number of blinks indicate the first digit in the code. For example, 5 blinks means the first digit in the code is 5. If the device button does not blink, then the digit is a zero.



4. Press 2 and then count the number of times the device button blinks.
   
   The number of blinks indicate the second digit in the code.



5. Press 3 and then count the number of times the device button blinks.
   
   The number of blinks indicate the third digit in the code.



6. Press 4 and then count the number of times the device button blinks.
   
   The number of blinks indicate the fourth digit in the code.



7. Record the code in the space provided on the cover of your remote control user guide. You may need it again if the device code is accidentally erased.