Akai S1000 / S1100 samplers

Hi folks,

I've just acquired an S1000 sampler from a studio and after checking it worked, the next thing to do was have a good look under the lid for a bit of gear pr0n. 

What a great old machine. Solid as a rock. Os 4.40 installed. Just needs a new backlight :) 

The SCSI board is a very long board with a laptop-drive-sized 80MB SCSI hard drive physically mounted to the board, I don't recall those SCSI boards being like that. Bonus, a noisy old bonus! 

I wanted to ask you folks about the RAM. The S1000 reports 8MB (4 MWords) at boot up. There are 4 RAM boards - two of them are the 2MB Akai EXM-005 boards but I'm not sure about the other two. The other two don't have any writing that give an indication of the size, just the words 'PA - DECODER AKAI 03'. 

For all I know, they could be 8MB boards and maybe the mod to allow the S1000 to recognise 8MB boards has not been performed. This would sort of tie in with a sticker that says '20' on the front panel ... maybe 20MB, 2x2MB and 2x8MB? 

Does anybody know if there's a way to see if the mod has been performed without taking out the mainboard? The 4 pairs of solder 'pads' on the topside of the board - W13 to W16 - if anyone knows which of those should be connected together I could probe them with a multimeter perhaps?

Thanks in advance,

Matt