Akai S900 "BAD Ram" bit code table

Akai-s900-DRAM-codes.MD

Akai S900 BAD RAM (D-RAM) BIT CODES

*ICs are any 256k x1 DRAM DIP package ie: generic 41256 Speeds 120 to 150 nanoseconds will work fine, ie 41256-120

OS DRAM BLOCKS:

-IC45 = DJ0

-IC46 = DJ1

-IC47 = DJ2

-IC48 = DJ3

-IC49 = DJ4

-IC50 = DJ5

-IC51 = DJ6

-IC52 = DJ7

WAVE BANK BLOCKS:

-IC53 = DJ8

-IC54 = DJ9

-IC55 = DJ10

-IC56 = DJ11

-IC57 = DJ12

-IC58 = DJ13

-IC59 = DJ14

-IC60 = DJ15

-IC61 = DK8

-IC62 = DK9

-IC63 = DK10

-IC64 = DK11

-IC65 = DK12

-IC66 = DK13

-IC67 = DK14

-IC68 = DK15

-IC69 = DK4

-IC70 = DK5

-IC71 = DK6

-IC72 = DK7

Thanks for this!

Yeah! Hope that it helped you out ;-)

Thank you so much, this was incredibly useful

Thank you so much, this was incredibly useful

Stoked that you found it useful! Hope it kept another S900 from the chopping block!

BTW: If you need replacement RAM modules, my company https://synthesizer.repair can supply you with them!

Do anyone know the order wave bank rams are filled when loading from disks or recording? It would make troubleshooting RAM issues easier...