Toshiba 57VW9UA, Service Manual

Page: 15 / 141

– 15 –
GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
C01P: Series (Reference factory adjustment)
V
oltage
measure- ment at vertical midpoint
Items
Names
Settings
Input signals
Measuring
points
Adjusting methods
Adjusting
standards
SCNT
Sub-contrast
Dynamic mode
Sub-bright
signal
TP46R
1)
Adjust amplitude from the pedestal level up to the
1.95V
op
Wide mode
(J2ch)
white peak.
BR
TC
Sub-brightness
Dynamic mode
Sub-bright
Screen
1)
Adjust the number of black collapsed bars of sub-bright
4
±
1.5 bars
Wide mode
signal
adjustment
signals.
(J2ch)
2)
Adjust after adjusting W/B, SCNT
.
COLC
Sub-color
Dynamic mode
Sub-bright
TP46B
1)
Adjust the amplitude of the rainbow color bar .
1.4V
op
NTSC
Wide mode
signal
(Adjust the P-P
value of the upper half)
(J2ch)
2)
Confirm that video muting is made.
3)
Adjust the COLC after adjusting the SCNT
.
COLS
Sub-color
Dynamic mode
SECAM
TP46B
1)
Adjust the amplitude of the color bar
.
1.8V
op
SECAM
Wide mode
color bar
(Apply video muting at the time of adjustment)
(E2ch)
2)
Adjust the P-P
value of the upper half.
3)
Adjust the COLS after adjusting the COLC.
Screen
Screen
Factory
screen
CRT
tubular
1)
Darken the environment as much as possible.
Point that
adjustment
adjusting mode
screen
2)
Set to factory-set screen adjusting MODE.
starts lighting
(Y
mute, DR
V
.CUT=40H)
3)
Directly observe the surface of Cathode Ray
T
ube and
adjust the screen VR to the point that starts lighting.
4)
Make above-mentioned adjustments for each tube of G, R, and B.
Focus
Focus
Dynamic mode
Retma signal
Screen
1)
Adjust to the best position by repeating electrical focus and
adjustment
Dot-cross signal
adjustment
optical focus adjustments.
2)
Use the jig and shade the CR
T
except the axes under
adjustment.
3)
Make above-mentioned adjustments for each tube of G, R, and B..
R
D
R
V
Bright
part
Wide
mode
Screen
1)
Adjust the color temperature of the bright part (103cd/m
2
).
B
D
R
V
W/B
adjustment
0.0075duV
RCUT
Dark part W/B
Wide
mode
Screen
1)
Adjust the color temperature of the dark part (17cd/m
2
).
BCUT
adjustment
0.0105duV
Dynamic
mode
Philips Pattern
Between
TP-V
1)
Connect a digital voltmeter between
TP-V
(P
A
L
)
and
TP-G
and
TP-G, and adjust it to 0
±
10mV by VPOS data.