STUDIO REPAIR » Lexicon » PCM 70 - Multi Effects »  Mainboard     [Image 4 of 18]  :: Jump To  
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Lexicon PCM 70  •  Mainboard
Component side of the large PCM 70 mainboard. It consists of two Z80 CPUs accompanied by three specialized Lexicon high speed processors - they do the number crunching for the audio process algorithms.
Lexicon PCM 70 - Opened * …

Lexicon PCM 70 - Display * …

Lexicon PCM 70 - Romantic * A quite romantic view of  the PCM 70 main board…

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Lexicon PCM 70 - Mainboard - Image by Nikolaus Riehm - Equipment courtesy of Karl Bartos
Lexicon PCM 70 - Mainboard * Solder side of the PCM 70 main printed circuit board.

Lexicon PCM 70 - Display Reverse * A vacuum fluorescent display (VFD)

Lexicon PCM 70 - Topology * …

Lexicon PCM 70 - Topology * …

Lexicon PCM 70 - LexiChips * The two LexiChips inside the PCM 70 - this is the place where Lexicon's algorithms are forged into silicon…

Lexicon PCM 70 - Memory * Memory management unit with 128 kilobytes of dynamic RAM (organized in 64k x 16bit).

Lexicon PCM 70 - Master CPU * Z80 CPU, 6402 UART, RAM



 
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