Dave is it possible to phone you please as ime getting a little bit confused here ?
By all means ring me at the office on Monday -
Or explain the confusion you have?
As I understand it.
The previous owners did not know the CD code
Therefore you have not been given the CD code by the previous owners.
7 incorrect attempts have been made in entering a code
There are not infinate attempts at doing this.
Within the next three attempts, you could permanently lock your changer - if you do, thats it.
You want to know how to unlock your changer to enter another number, irrespective of the fact that you do not have the number, and do not seem to appreciate how stupid that actually is, with respect to the number of remaining attempts - all of those three remaining attempts are vital.
To obtain a code number, the numbers are needed from the side of your Changer, but you will have to remove it first to see them.
And finally, yes, I have directed you to my website, where a nominal charge will be made - I do not do this for free.
Please let me know which bit is confusing ?