If you are not able to identify the chips, try searching for their part numbers in Google. Often the microprocessor has the most pins. Typically in a car stereo you will find a small number of chips the microprocessor, an audio processing chip, a PLL for the tuner and perhaps a set of ICs to drive the CD mechanism. Once the radio is open you need to identify the tuner module and microprocessor.

Finding you way around Locate the major components If you are unsure, take photos as you go and note where each screw goes. In many radios I’ve come across you start with the top panel, followed by the front, then slowly work your way down. If you really get stuck, see your local car audio dealership. If you are not sure about what to do, search Google as people in enthusiast forums often post instructions. Ceramic or plastic tuning coil adjustment tool.FM or VHF antenna (or a long scrap of wire).Suitable plug and harness to connect to the radio.Phillips #0 screwdriver (and other types as necessary).Fine tipped temperature controlled soldering iron.OEM radios are generally designed to be sold in cars around the world, and I have often found that manufacturers stick with a common base design and modify it slightly to suit each local market. Generally this guide applies more to OEM radios than aftermarket ones, as the latter are often developed specifically for the Japanese market. This post is still a work in progress so I may update it from time to time and add more photos as I get the chance. Here’s a guide on hacking your radio to convert it to natively tune across the CCIR band. Sure you can use a band expander but these suffer from a number of drawbacks, not to mention that the radio does not display the correct frequency of the station you are tuned to. Do you have a Japanese import car that won’t tune to local FM radio stations? It’s a well known fact that Japan uses a different public FM broadcast band to the rest of the world 76 to 90 MHz instead of the usual 87.5 to 108 MHz CCIR band.

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