Sony 1080i - Manual (Page 62)

62
Chapter 5 Maintenance
Chapter 5 Maintenance
Every 50 hours
If you repeat the tape transport operation, the video
heads will become dirty and coated with fine dirt or
dust. Clean the heads every 50 hours.
After using a tape prone to clog the heads
After using such a tape causes the symptoms
illustrated below, clean the heads.
When the symptoms caused by clogged video
heads appear
Even if you clean the heads periodically, clogging of
the heads may occur anyway. Clean the heads when:
• mosaic-pattern noise appears on the playback picture.
• the playback picture freezes.
• a part of the playback picture does not move.
• playback pictures do not appear.
• playback audio is interrupted.
• “x Dirty video head. Use a cleaning cassette.”
will appear during recording.
To use the cleaning cassette
Refer to your cleaning cassette’s instruction manual.
Cleaning cassettes are replaceable. After using the
supplied cleaning cassette for the specified number of
times, buy a cleaning cassette for replacement.
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.
Symptoms caused by contaminated video heads
Normal picture If a mosaic-pattern noise as seen in
these pictures appear on the screen or
if the entire screen turns black, use the
cleaning cassette.
Notes on the Video Cassettes
Cleaning the terminal
If the gold-plated terminals of a cassette become dirty,
or dirt accumulates on the terminals, the correct
remaining tape time may not be displayed.
Clean the terminal with a swab once every ten times
you eject a cassette.
When affixing a label to the cassette
Be sure to affix a label only on the correct location so
as not to cause malfunction of the unit.
After using a cassette
After use, please be sure to rewind the tape completely
(to prevent picture and sound distortion). Return it to
its case and store it in an upright position.
Notes on the LCD Screen
The LCD screen is manufactured using high-precision
technology. The ratio of effective pixels is 99.99% or
more. However, there may be some tiny black points
and/or bright points (red, blue, green or white) that
constantly appear on the LCD screen. These points do
not affect the recorded picture in any way.
Do not place this unit with the LCD screen pointing
toward the sun. Otherwise, the unit may be damaged.
To clean the LCD screen
To remove dirt or to clean fingerprints from the LCD
screen, use an LCD cleaning kit (not supplied). When
you use the LCD cleaning kit, do not pour the cleaning
liquid directly on the LCD. Always soak the liquid in
cleaning paper and wipe the LCD with this paper.
Terminal
Notes on Use