We'll see.
I opened the radio, and I looked for the happy eeprom 24c01 smd according to a web site that is its model.
I find where it is in the service manual that tells me that it is in the IC-16, I find it and when I search ... I do not see anything, I might not have the smd 24c01?
I send photos...

to see if anyone can give me a hand. thank you very much.
EDIDATE:
** Fixed, the eeprom was to the tuner plate. modification of the data 37h was to 02 put 01. ready I no longer need the most key. Greetings.