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"RE: D4 - Can not turn off - CF access light is on"
Have you updated the firmware toA: 1.02 B: 1.02? There was an issue that could cause the camera to lock up, and a firmware update was issued. Here's the link if you haven't seen it:http://support.nikonusa.com/app/answers/detail/a_id/17830/session/L2F2LzEvdGltZS8xMzQxNzIwMTkxL3NpZC9TaVB3N0Iqaw%3D%3DJack