Korg CX3 -1979    Weight = 23Lbs. Number mfg.= 5000 MRP=$995

User Manual: Manual Manor or search.. I saw one .pdf direct link
Reset Proceedures: N/A
Operating System code: N/A
MIDI or other control protocol: N/A
Software related Links: N/A
Patches or knob settings: N/A
Circuit Overview: below
Scematics/Service Manual: weathergreen
Common Service Issues/Tips: below
Parts Sources: new style Keys Old style Keys knobs semiconductors misc
Uncommon chips/modules used:Many in newer version. Older version: 50241 TOS, MN3004 BBD x2, SM304A keyers, SM305 divider/harping function
General Info Links: emusician.com or BX3 site (weathergreen)

Circuit Overview:
     Another divide down hammond emulator. BX-3 is dual manual version. Considered a bit of a classic in that realm. The newer version is all digital of course. The old version uses a TOS 50241 as with the other poly keyboards of those years like Delta and Lambda. As well as the same keys. The divider chips and keyers are unique though in order to give the flexibility with the odd footages I suppose. In summer 2001 Mika Tyrvaeinen (Finland) and me Thomas Richardon (Germany) studied the funcions of old CX3 via e-mail contact. I have a document they provided with .gif files of diagrams nicely done! I assume probably that is still available somewhere but oldschool is no more. Perhaps the new link is adequate. I haven't looked. Let me know if not.

Service Tips:
     Never had to work on one. The document I'll just link here

Korg has keys and may still support these with some other parts but beware there is a newer version of it that uses different keys for instance. I have some older ones. Contact