Scientific Atlanta AT8400TM - Manual (Page 9)

9
Which Code Worked?
Find out which code programmed the mode key to control your device.
Finding the Code That Worked
(Program Code 9 9 0)
1. Press and hold SELECT and the appropriate mode key (CBL, TV, VCR, or AUX)
until all mode keys blink twice.
2. Press 9 9 0. The mode key you selected in step 1 blinks twice.
3. Press 1; then, count the number of times the mode key blinks. The number of blinks
indicates the first digit in the code. For example, 4 blinks indicates the first digit in
the code is 4. If the mode key does not blink, the digit is 0.
4. Press 2; then, count the number of times the mode key blinks. This number indicates
the second number in the code.
5. Press 3; then, count the number of times the mode key blinks. This number indicates
the third number in the code.
6. Press 4; then, count the number of times the mode key blinks. This number indicates
the fourth number in the code.
After all four numbers in the code are identified, all mode keys blink three times.
7. Record the code in the space provided on the cover of this guide. You may need it
again if the device code is accidentally erased.