greezy
1 post
Mar 02, 2005
2:09 PM
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The bootup (power on code) security code is stored in a small 8 legged chip called an eeprom (can’t recall the model # of the chip) that is located on the tuner board in the kdc-mp522 which is covered by a metal shield that needs to be disordered to access the tuner board.
Now for the fix. You can simply erase chip with an eeprom programmer, if you don’t have a programmer, you can replace the eeprom chip with a blank one. This will let the radio boot in “all off mode” letting you program a new code into the erased or blank eeprom. Since I did not have an SMT eeprom programmer handy at the time or a direct replacement eeprom, I have used a 24LC16B/SN eeprom. Please note that the eeprom in this radio is very small, and should be removed using a torch and not big ass soldering gun. In no way should you try this repair without good soldering skills and the right tools. All it takes is a short between the eeprom legs or placing the eeprom on the board backwards and your radio is toast, also do not force the eeprom off the tuner board, as you can break the traces going to the eeprom and that would not be a good thing. If you don’t feel that you have the skills to do this repair, don’t do it, and find someone that can.
Lastly you can also get your radio working simply by cutting or lifting the VCC leg (leg #8) of the eeprom disabling the chip. Leg #8 is directly across from leg #1. Leg #1 is the leg with a dot.
Now with this said, with the eeprom disabled the radio can no longer store information on the chip, such as radio station presets, and any other stored settings. This is why I do not recommend this quick fix.
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chuck67217
2 posts
Mar 25, 2005
4:57 PM
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the eprom thing worked just lifted leg 8 and works perfect very hard to do but worth it even saves my settings thanks for the tip KDC 319 may not work for everybody else I have an eletronics background and it was noteasy at all the chip is in a difficult spot to reach thanks again.
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bin
1 post
Jan 26, 2006
4:26 PM
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Hi. I've change the eeprom in a KDC-M0621G following the instructions. Now the radio boots up in "ALL OFF" mode but I can't hear the tuner and my radio cannot read any cd. I only hear the beep when y touch the buttons. I can change the settings in the menu options but I can't change the security code. It seems that my radio is hang up. What I have to do? Thank you.
Last Edited bin on 26-Jan-2006 4:32 PM
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moparman
1 post
Mar 30, 2006
5:48 AM
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i see lots of postings for a universal crack code for a kenwood kdc-mp522 unit has enyone found one that works?it is the four numbered code that i seek thanx email me at dgaspar@telus.net
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D1no
1 post
May 11, 2008
10:55 PM
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I replaced the battery on my Mitsubishi. I have a Kenwood kdcmp522 that needs a code. I purchased this car used from a Dealer and can not get intouch with the previous owner. Please help. Thank You. Dino Valle
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deansta
2 posts
Jun 11, 2008
9:36 PM
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how do you do the code for kenwood mp522 without a remote?
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