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Toshiba 2857DD - Service Mode Adjustments; QA02 Memory Initialization; Sub-Brightness Adjustment; Horizontal Position Adjustment (HPOS)

Toshiba 2857DD
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SERVICE
MODE
ADJUSTMENT
ITEM
ADJUSTMENT
PROCEDURE
INITIALIZATION
OF
QA02
After
replacing
QA02,
the
following
initialization
is
required.
(MEMORY)
1.
Call
up
the
adjustment
mode
display
following
the
steps
1
and
2
on
page
7.
2.
Press
the
CALL
button
on
the
Remote
Control
and
CHANNEL
A
buttons
on
the
TV
set
simultaneously.
The
initialization
of
QA02
has
been
completed.
3.
Check
the
picture
carefully.
If
necessary,
adjust
any
adjustment
item.
Perform
“AUTOMATIC
SEARCH
MEMORY’.
.
Set
CONTRAST
to
“00”,
and
BRIGHTNESS
to
“50”
by
adjusting
user
controls.
2.
Set
the
TV
in
service
mode
to
get
white
cross-bar
of
inside
pattern.
3.
Select
BRTC
(brightness
correction),
and
adjust
the
4
-/+
button
to
reduce
the
value
so
that
white
portion
of
inside
pattern
slightly
light.
4.
Adjust
.4
-/+
button
to
increase
the
data
value
of
BRTC,
and
set
it
just
before
the
difference
between
the
belt
of
vertical
retrace
and
the
border
of
black
portion
of
inside
pattern
is
visible.
After
that,
return
vertical
height
and
contrast.
SUB-BRIGHTNESS
(Address
:
BRTC)
Note:
Constrict
the
picture
height
until
the
vertical
retrace
line
appears
adjusting
the
address
HIT
(HEIGHT).
Belt
of
vertical
retrace
HORIZONTAL
POSITION
ADJUSTMENT
(HPOS)
1.
Set
the
TV
in
service
mode,
and
get
black
or
white
cross-bar
signal
with
VIDEO
button
on
remote
hand
unit.
2.
Select
either
HPOS
(Horizontal
picture
phase)
or
VPOS
(Vertical
picture
phase)
with
CHANNEL
A,
W
buttons,
and
adjust
horizontal
or
vertical
picture
position
in
the
center
of
screen
with
VOLUME
.4
-/+
buttons.
VERTICAL
POSITION
ADJUSTMENT
(VPOS)
VERTICAL
AMPLITUDE
ADJUSTMENT
(HIT)
1.
Set
the
TV
in
service
mode,
and
get
black
or
white
cross-hatch
signal
with
VIDEO
button
on
remote
hand
unit.
The
first
ceHHH
2.
Select
HIT
(Vertical
amplitude)
with
Hoe
CHANNEL
A,
¥
buttons,
and
adjust
BERGE
vertical
amplitude
with
VOLUME
ZEEE
<1
—/+
buttons
so
that
vertical
amplitude
lacks
a
little.
3.
Adjust
vertical
amplitude
with
VOLUME
<1
—/+
buttons
so
that
the
first
bar
on
cross-hatch
signal
touches
edge
of
screen.
~10-

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