hgt cd changer not working

[andi]

just picked up the car on monday and found the cd changer not working.
i can only push cds into disc 1 or 2 and when i press cd button on the head unit it says no magizine/magizine empty + buttons 1-5 are flashing between green and orange.
any ideas

 

[steve1219]

Don't no if this is the problem but has the CD changer security code been entered?

Steve

 

[andi]

how do you enter the code i have scrolled through the menu and can only find where you enter the code for the sat nav