Sony Trinitron KV-VF21M70 Operating Instructions Manual page 53

Symptom
Playback section
Power is on, but the tape
does not run.
Poor playback picture
The sound drops out.
Symptoms caused by contaminated video heads
• Normal picture
Possible cause
The safety device has been
activated.
The color system setting is
inappropriate.
The tracking condition is
inappropriate.
The video heads are dirty.
The video heads may be
worn out.
The tape is worn out.
The tape is defective.
• Rough picture
initial
contamination
Switch off, disconnect the AC
power cord, and leave the set for
about one minute.
Display VIDEO SET UP and set
the color system (COL SYS) to the
setting corresponding to the color
system that the tape is recorded in.
(page 42)
Adjust the tracking manually.
(page 37)
Clean the video heads using the
Sony T-25CLD, T-25CLDR, or T-
25CLW video head cleaning
cassette (not supplied). If these
cleaning cassettes are not available
in your area, have the heads
cleaned at your nearest Sony
service facility (a standard service
fee will be charged). Do not use
any commercially available liquid
type cleaning cassettes other than
Sony's, as it may damage the video
heads.
The video heads may have to be
replaced. Contact a Sony dealer for
advice.
Use a new tape.
Use a new tape.
•Unclear picture
Additional Information
Solutions
• No picture (or
black & white
screen appears)
t
terminal
continued
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