Notes On Use; Cleaning Of The Video Heads - Sony DVCAM DSR-20 Mode D'emploi

Notes on Use

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 objects on the unit
The cabinet may be damaged, or the VCR may not
work correctly.
Do not handle the recorder roughly
Avoid rough handling or mechanical shock.
To avoid damaging the cabinet finish
Plastic is often used for the surface finishing of the
recorder. 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 dry cloth.
Do not put magnetic objects close to the unit
Magnetic fields may damage the recording.
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 head and other mechanical
parts become dirty or worn. To maintain a clean
picture, we recommend maintenance every 1000
hours, though the using condition 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
c
Normal picture
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.
Chapter 4 Maintenance and Troubleshooting
If these pictures appear on the
screen, use the cleaning cassette.
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