Opel SC 303
code entry
After switching on, set will display 1 as the first code digit. This digit can only be toggled between 1 or 0. Enter the code via station preset keys 1 - 4 followed by pressing the 'UM' key for a few seconds.
deactivating the code
After switching on, press and hold the 'UM' key until display shows 1 -. Enter the code and again press and hold 'UM'. The word CODE will display briefly and the set will operate and is now uncoded.
activating the code
Follow the same procedure as outlined above. The display this time will show code entry indicating that the code is now active and the set will operate.
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