Canon OPTURA30 Instruction Manual page 147

❍ At cold temperatures, the screen may be darker than usual. This is not a
malfunction. The screen returns to normal when the camcorder warms up.
Video Heads
❍ When the message "HEADS DIRTY, USE CLEANING CASSETTE" appears, or when
the playback picture becomes distorted, the video heads need to be cleaned.
❍ To maintain the best picture quality, we recommend cleaning the video heads
frequently with the Canon DVM-CL Digital Video Head Cleaning Cassette or a
commercially available dry cleaning cassette.
❍ Tapes already recorded with dirty video heads may not be played back correctly
even when you clean the video heads.
❍ Do not use wet type cleaning cassettes as this may damage the camcorder.
Condensation
Moving the camcorder rapidly between hot and cold temperature may cause
condensation (water droplets) to form on its internal surfaces. Stop using the
camcorder if condensation is detected. Continued use may damage the camcorder.
Condensation may form in the following cases:
When the camcorder is moved from an
air-conditioned room to a warm, humid
place
When the camcorder is left in a humid
room
When the camcorder is moved from a
cold place to a warm room
When a cold room is heated rapidly
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