Canon 0273B001 ELURA90/ELURA85/ELURA80 Instruction Manual - Page 142

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 warm, humid place When the camcorder is moved from a cold place to a warm room When the camcorder is left in a humid room When a cold room is heated rapidly How to avoid condensation:  Unload the cassette, place the camcorder in an airtight plastic bag and let it adjust to temperature changes slowly before removing it from the bag. When condensation is detected:  The camcorder stops operating and the warning message "CONDENSATION HAS BEEN DETECTED" appears for approx. 4 seconds and " " starts flashing.  If a cassette is loaded, the warning message "REMOVE THE CASSETTE" appears and " " starts flashing. Remove the cassette immediately and leave the cassette compartment open. Leaving the cassette in the camcorder may damage the tape.  A cassette cannot be loaded when condensation is detected. 142