Partial black in frame

More likely the board or the connectors to it. Take it for repair. It is a good make and worth doing.

Vertical scan section circuit fault. Check and replace damaged component/s at its vertical scan output section circuit. If you wish to get some details, check the site linked here. Pull up older posts. Check the site in 'Mosaic' view. It will make search easy. http://electronicshelponline.blogspot.com/

Sounds like it might be a failure of one of the magnets in the side plate of the mirror box. What is your shot count?

That is a fuel vapor box for emissions.

Anyone can you help me? As open cover photframe serie 10ff2

Your camera settings may be off. The D200 is very flexible when it comes to personalizing your settings, but they can be hard to navigate.
Try resetting using the built in reset feature. This will not affect your personal settings but may clear any unwanted changes. To do this, find the "QUAL and +/- " buttons on the top of the camera. Hold them both down for a few seconds. The top LCD blinks then the camera is reset.
This resets things like resolution, White balance and ISO settings.

Next, try setting your metering matrix to the middle position. Not the top and certainly not the bottom postion. This switch is located on the right side of the view finder.

If your lens has a "M/A - M", use the M/A setting.

There are three settings for focus. C, S, and M, located on the front of the camera next to the lens. Set your camera focus to "S". This will set it up for still subjects and prevent the sensors from tracking things that move. Also set on the AF area mode switch on the back of the D200.

Try these settings. If your images are still out of focus, you may have other issues that may require servicing by an authorized Nikon facility.

This can be caused by a damaged fuser or drum try to change the cartridge and if that does not resolved the issue then its the fuser

Hi Amanda, welcome to FixYa.

Try this to fix your focusing issue. It's a custom AF setting.
Press the Menu and select the pencil icon. Then you'll see Custom Setting Menu on the LCD display. Click down to Autofocus and then click to the right.
There are 3 choices here: FPS Rate, FPS Rate + AF, and Focus.
Set it to Focus.
FPS Rate is the default setting, the camera will take 5 frames per second whether it's in focus or not.
FPS Rate+ AF forces it to slow down hoping to get more frames in focus.
Focus sets the camera to fire only when in perfect focus. It slows you down some, but it will save you from deleting all the blurry ones.

Try this and let me know if it works for you with a comment.

Ken Rockwell has alot of tips and tricks (including the one I just gave you) in a pdf telling all about your camera. You can read it here. http://www.kenrockwell.com/nikon/d200/users-guide/d200-users-guide.pdf

Enjoy your camera and feel free to rate my solution.

Rob

check the power options in os from control panel whether the option "turn off the monitor" is in "after 5 mins" if so make it never....

if not check in bios power and frequency control properties...