Function Of Controls - Sony Trinitron PVM-1271Q Service Manual

PVM-1271Q
1-4.
FUNCTION OF
CONTROLS
FRONT PANEL
O
SECAM
button
Press
this
button
when
a picture from
SECAM
color
sources
is
distorted.
The
picture will
become
clear.
O
SYNC
select
switch
Sync
may
be supplied
from an
external
sync generator
to
the
EXT
SYNC
IN
connector
on
the
rear
PANEL.
When
an
ex-
ternal
sync
is
suppiied, with either
a
composite
or non-
composite
video input,
set the
SYNC
select
switch
to
EXT.
When
composite
video
is
supplied with no external sync, set
the
SYNC
select
switch
to iNT.
O
AFC
(automatic frequency control)
switch
Select the
AFC
operation
in
the
fast
mode
or
slow mode.
FAST
:
incoming sync timing
errors are
compensated
for.
Normaily, set this
switch to this position.
SLOW:
incoming sync timing
errors
are displayed
on
the
screen.
This
mode
is
used
to
monitor
the
jitter
from a
VTR.
O
SCAN
MODE
select switch
Normal scanning
or
under scanning
is
achieved by proper
setting of
the
SCAN MODE
select switch.
Set
to
NORMAL
for
normal scanning,
or to
UNDER
for
viewing a picture
which does not
appear
in
normal scanning.
Under scanning
reduces
the display
size
by about
9%.
O
V
HOLD
(vertical
hold) control
If
the picture
rolls vertically,
correct
it
with this control.
O VOLUME
control
Turn
this control
clockwise
or
counterclockwise
to
obtain
the desired
volume.
O
HUE
control
This control
is
effective
only
for
playing
tapes
of the
NTSC
or
NTSC
443
system.
Use
to
obtain the
most
natural skin
tones.
Clockwise rotation
makes
the skin tones
more
greenish
;
counterclockwise
rotation
makes them more
purplish.
O
COLOR
control
Adjusts the color intensity of the picture.
Clockwise
rotation
makes
the
picture
more
vivid
;
counterclockwise rotation
makes
it
paler.
O
BRIGHT
(brightness) control
Adjusts the brightness.
Normally
set this control
at
the
center detent position.
0
PICTURE
control
Adjusts the contrast,
color
intensity
and
brightness
simultaneously
in
the proper
ratio.
0 POWER
switch
and
indicator
To
turn the
monitor
on,
depress
the
POWER
switch.
The
in-
dicator
will light.
To
turn the
monitor
off,
press
the
switch
again.
0
Color
system
indicators
Indicate the color
system
of the input video signal.
0
Input indicators
Illuminate to indicate the input select button pressed.
0
Input select buttons
Press
to select
the
program
to
be monitored.
LINE
A
:
for a signal
from
the
LINE
A
connectors.
LINE B
:
for
a signal
from
the
LINE
B
connectors.
VTR
:
for
a signal
from
the 8
-pin
VTR
connector.
RGB
;
for
a signal from the
R,
G
and
B
connectors.
CMPTR
:
for
a signal
from
the 25-pin
CMPTR
connector.
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