I have a problem, after having the local cnc repair guy over to look at the mill he, with the help of support from yaskawa determined that my problem is on the JANCD CP02 board. the machine tells us this and the manual points us to the ram chips mounetd on the board... simple enough right, replace the ram and go on. The chips were easy to find but the guys at yaskawa told me they had to be mapped before they were any good, than unmapped they would not help at all. they would be glad to map them for me for the flat rate fee of repairing the board. I asked if i could buy a pair of chips from them that were already mapped, they said that was impossible, they werent available at all. So this probably means that they were just going to map out the bad memory sectors in my chips and send it back to me. I am no electronics guy but this all seems very expensive to me for so little work.
My question is simple, and its for someone with a strong electronics background with experience in 1980's vintage board repair. Can i just replace the dumb memory chips, or are they too dumb like they are? Can I map them without the help from the support guys at yaskawa? Does any one have parts for one of these controllers used? I don't think i need the entire board, just the ram chips in location c-27 of the pcb jancd cp02. they told me that if i went looking for a used board that it would have to be off of an ideetical machine for it to work, i am guessing this is to do with the ladder logic (which i have no idea about, but i do have all of the diagrams and the parameters on disk. For what they want for a board i could really put a ding in the price of a newer controller and a pc based system with tons of memory, good conversations, graphics, and so on. any help would be appreciated.
At this point i think i will be replaceing the chips without mapping just to see if those guys were just trying to rip me off. If it doesnt work its a flat rate to fix it, one chip or every one of them. makes me want to snip every chip in half so i know i get my moneys worth.
BTW, the chips are less than $10 each. i could buy every chip on the board for under 1k and have then installed... why is it so expensive to work with these guys, they are just like all of those other cnc guys.
Danny