Teardown of a Kappa CF15 CCD Camera From a Microscope

Teardown and on-the-fly analysis of the circuits found inside a Kappa CF15 CCD camera. I got the camera with my Nikon SMZ-2T stereo microscope, that I use for electronics repairs and component identification. The camera was defective and taking it apart really made for a pleasant surprise of complexity and a stuffed enclosure!

You might also be interested in a test and teardown of a huge broadcasting camera Sony BVP-7AP or a CCD sensor based webcam!

Kappa CF15 Printed Circuit Boards

The camera consists of 5 individual circuit boards, where one of them is a motherboard or backplane.

The circuit board marked VRBD130E2C / CMK-18X holds the image sensor. The camera uses a CCD sensor for the image acquisition. CCD is short for Charge-Coupled Device. It is a 2-dimensional array of coupled capacitors that can store a electric charge. Firstly each capacitor charges corresponding to one pixel and is charging proportional to the light intensity that it receives from the lens. Secondly a control circuit can read out each capacitor as a shift register, where each capacitor delivers its charge to the coupled capacitor next to it. In a analog camera like this, the values are processing as a continuous analog signal. Thirdly a charge amplifier and lowpass filter is used before transmission or encoding.

The CCD sensor connects to a circuit board marked VRYD130E1D. The main IC processing the image here seems to be a Mitsubishi MN51007LVH IC, no datasheets found. The AN2210S IC is a video camera signal processing circuit with built-in OB modulation, AGC and gamma correction.

The circuit board marked VRYD130E2B is the analog image processing boards. It is actually 4 additional smaller boards on a mainboard that is to say on a larger mainboard. A AN2210S IC, like mentioned above, along with the trimmers and shielded sections, give away its purpose. A unknown AN2361S IC sits at the back.

This circuit board is marked VRCD130E1B. It seems to be a filter and amplifier section.

Circuit board marked VRBD130E1B seems to hold the main processor of the entire camera assembly. The large IC MN1552CVY is unknown, but the smaller Mitsubishi M50450-010FP is a on-screen display controller for characters and patterns.

Mads Barnkob

Electrician, programmer, experimenter and amateur scientist with experience in industry automation, programming and all kinds of high voltage generating electronics. Administrator of https://kaizerpowerelectronics.dk and the high voltage community forum https://highvoltageforum.net

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