Panasonic BL-C30CE Service Manual page 13

Note:
- Do not use alcohol, polishing powder, cleanser, benzine, thinner, wax,
petroleum products or hot water to wipe the camera. Also avoid
pesticide, glass cleaner or hair spray. They may cause change in shape
or color.
- Do not apply pressure to the pan/tilt portion of the camera. Any forced
movement can damage the internal mechanism.
- If the pyroelectric infrared sensor has dust on it, it may not detect
temperature differences. Keep the pyroelectric infrared sensor clean.
3.7.2. Cleaning the Lens
If the lens has dust on it, the image may be unclear or out of focus.
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