Sony DSR 11 Operating Instructions - Page 52

NoNteostoensUosen Use Chapter 4 Maintenance Notes on the video cassette recorder Do not install the unit in a place subject to direct sunlight or heat sources If you do, its cabinet, mechanical parts, etc., may be damaged. Do not install the unit in an extremely hot place If the unit is left in a car parked with its windows closed (especially in summer), its cabinet may be damaged or it may not work correctly. If the unit is brought directly from a cold to a warm location Moisture may condense inside the unit and cause damage to the video head and tape. If you use the unit in a place subject to direct cold currents from an air conditioner, moisture may also condense inside the unit. Do not place a heavy object on the unit The cabinet may be damaged, or the unit may not work correctly. Do not handle the unit roughly Avoid rough handling or mechanical shock. To avoid damaging the cabinet finish Plastic is often used for the surface finishing of the unit. Do not spray a volatile solvent such as an insecticide toward the cabinet or place rubber or vinyl products on the cabinet for a long time. If you do, the finish of the cabinet may be damaged or the coating may come off. Do not clean the cabinet with thinner or benzine The cabinet may be damaged or its coating may come off. When you use a chemical-impregnated cloth, use it according to its directions. Clean the cabinet with soft dry cloth When the cabinet is very dirty, clean it with a soft dry cloth lightly moistened with a mild detergent solution and finish it with a dry cloth. Do not put magnetic objects close to the unit Magnetic fields may damage the recording. To prevent electromagnetic interference caused by radio communication equipment such as cellular phones, transceivers, etc. The use of the radio communication equipment such as cellular phones or transceivers near the unit may cause a malfunction and can affect the audio/video signals. The cellular phones or transceivers near the unit should be switched off. Do not use the unit in an area exposed to radiation A malfunction may occur. Checking the video heads every 1000 hours A VCR is a high-precision piece of equipment that records and plays back the picture on a magnetic tape. In particular, the video heads and other mechanical parts become dirty or worn. To maintain a clean picture, we recommend maintenance every 1000 hours, though the conditions of use may differ depending on temperature, humidity, dust, etc. Cleaning of the video heads If the video heads are contaminated, the pictures cannot be recorded properly or the playback pictures become noisy. If the following phenomena occur, use the cleaning cassette (supplied) to clean the heads. • Square-shaped noise appears on the playback picture. • A part of the playback picture does not move. • The playback picture does not appear on the screen. Symptoms caused by contaminated video heads Normal picture If these images appear on the screen, use the cleaning cassette. To use the cleaning cassette Refer to your cleaning cassette's operating instructions. After prolonged use, the video heads may become worn out. If optimum picture quality is not restored even after you have cleaned the video heads with the cleaning cassette, the video heads may have worn out. In that case, you have to replace the video heads with new ones. Please consult your Sony dealer. 52 (GB) Chapter 4 Maintenance