It seems that a few Nikon D200 DSLR cameras have been affected by banding (sporadic). Here is an example of an image (100% crop) affected by banding.

Although there has been no specific official announcement by Nikon, it is interesting to hear they are repairing the issue. Below is a scanned copy of a service report by Nikon after servicing the D200 banding issue; labeled as “RPL Memory compression”. With the firmware version remaining the same, A 1.01 and B 1.00; it looks like it is a hardware issue. At least we know the problem will be repaired.

If you like further information on banding, Ken Rockwell has an interesting view on it here

Source