Medical Endoscope Camera System Repair Case (III)

Fault phenomena and corresponding equipment

According to the comprehensive fault phenomenon, the equipment faulty can be roughly determined. The single equipment can be tested, and the specific damaged parts can be judged according to the working status of each module in the equipment.

1.No Image:

Camera Processor:

Fault Phenomenon: No Power, No working for Main control board,No Video signal.

Damaged parts: fuse, power module, Control board, components, abnormal output of video signal,etc.

Monitor:

Fault Phenomenon:No Power.

Damaged parts: fuse,power module, signal board, screen (CRT,LED,LCD).

2.Image definition:

Camera head:

Fault Phenomenon:Focusing mirror,display.

Fault Reason: aging, tackless , flooding water, mildew,dust, vapour.

3.Image brightness:

Fault Phenomenon: Camera processor, camera head, light source,monitor.

Fault Reason:  main control board, signal output unit; CCD aging, button adjustment; unlit, bulb aging, low power on high pressure plate; aging, manual adjustment.

4.Other common failures:

Image interference, image blurred, image dithering, image color cast.

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