LC865624 Control Processor

The Nakamichi AV-8 uses the LC865624 (also known as LC865624A) 8-bit single chip microcontroller for general management. It has on-chip ROM and RAM, 8-bit AD converter, 13-source 10-vectored interrupt system, and two 8-bit serial interface circuits. This IC is on the front panel PCB and they usually mount it diagonally. A huge amount of information goes to this IC and if you understood its pinout and were able to read the digital information, then it can give many clues to why the amplifier is not working. At Vis Labs, I invented a special socket that connects to all the pins so that they could be read on a multi-channel scope.

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