Clarion CRM57R not accept original code ?

[Seby_TM]

Hi,

I have problem with this unit Clarion CRM57R not accept original code ?

The eeprom is 93c46 rotated, I try original code 6455 but not accept the code, I don't know for what reason.

Here is the original dump.

Can some one help me to made code off for this unit ?

Thanks

[kappa1]

Try code 5564

[Seby_TM]

Try it and not work any swap code, I need to make it code off if you can !

I see on pcb have some like an Battery for bios and I think from here is the problem, need to check.

[Seby_TM]

After more investigations I check bios battery solder on pcb and it was old and not have 3V, I replace it and after accept the original code !

This it was the solution. :-)