Atmo original Philips radio

Hi I’m refiting the original Phillips radio back into my atmo as it was removed by a previous owner, how do you enter the security code ? Can’t find anything online , when I power up it’s says cuo in screen which I’m sure is meant to be code as some of the pixels are not working

........How do you enter the security code ?

I take it you have the radio's four figure code ....... below gives you the info you require.

Radio Code Info.JPG

Thank you that’s the info I was looking for

If you need the code you can get it from here

Radio-Code.co.uk

As long as you have the serial number on the side of the radio