I have a Nec it6200 with a c-0630 code the manual says it is a dma error and too replace the main pwb board. Machine is only a year old and the first service call on it was this problem. Only when customer is printing it does this I have already did all my flash updates and tried new canram wich gave me a c-o610 code probably wrong memory. I do not want too consume cost of a new main pwb board please help me with ideas... Any advise will help.