Grundig 4000-A
code entry
After switching on, the display shows code entry followed by 1 .. .. .. .. Enter the code using preset keys 1 - 4 followed by pressing the EXPERT key to accept. code entry will display briefly and the set will operate.
deactivating the code
With the set operating, press and hold the EXPERT button until code entry displays. Release the button and press it again. E 1 .. .. .. .. should be displayed. Enter the code as above. The code function will now be disabled.
activating the code
With the set operating, press and hold the EXPERT key until CODE is displayed. Release the key and press it once more. E .. .. .. .. will display. Enter the code as described above. The code function is now enabled.
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