Need code for Philips 90dc401

[ChrissCross72]

Hello, I'm new here.
I have an electronic workshop. My daily job is repairing TV sets.

Now I have a radio on the workbench wich asks for a code.
the serial number is
ph401sp0251105

OR

ph401sp0261106

I cannot make out the difference between the 6 and the 5's

Many thanks to the person who can help me. I'm always ready to help with TV problems...