Nikon d90 has err black screen and can't take pictures.

The D90 fault code ERR indicates that the camera assembly is improperly installed or faulty.

If it is confirmed that the camera has not been collided or flooded, it may just be that the lens and battery module are not installed properly, so it needs to be disassembled and reinstalled. If the camera is not used for a long time, or it has been collided, it is likely that the internal components of the camera have poor electrical contact, or there are problems with small parts such as springs and screws. At this time, it is recommended to go to a professional repair shop for repair. Never repair it yourself. It is safer to send it back to the original factory for repair.

Nikon is a well-known camera manufacturer in Japan, and it is a subsidiary of Mitsubishi Corporation. Founded in July of 19 17, it was named Japan Optical Industry Co., Ltd., 1988. Relying on its camera brand, the company was renamed Nikon Co., Ltd., focusing on professional photography, famous for its exquisite pictures and rich colors, and it is a world-famous designer and manufacturer of optical products.

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Nikon is a world-famous optical product designer and manufacturer, with the most advanced optical technology level in the world today, and its optical products are famous for their excellent performance. Nikon optical technology plays an important role in various fields of human production and life, such as imaging, optical fiber, semiconductor, optometry and scientific research. Nikon brand leaves people with a high-quality, high-tech and high-precision image.

Nikon lens has advanced optical technology, high definition, high transmittance and advanced coating technology. Nikon is a world leader in high refractive index materials, aspheric surface technology, personalized optical design and optical coating. Nikon SEE series lens and coating are the representatives of Nikon's cutting-edge optical technology.