Toshiba 29SF6SH, Service Manual

Page: 13 / 36

– 13 –
GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
COLC
COLS
SRY
SBY
RCUT
GCUT
BCUT
GDRV
BDRV
Screen
VR
BRTC
ITEM NAME
SETTING INPUT
MEASUREMENT
ADJUSTMENT METHOD
ADJUSTMENT
(user control) SIGNAL
POINT STANDARD
SUB
COLOR
NTSC
ADJUSTMENT
SUB
COLOR
SECAM
ADJUSTMENT
SECAM
Black level
adjustment
R-Y axis
SECAM
Black level
adjustment
B-Y axis
Screen
adjustment
and white
balance
adjustment.
(R cutoff)
(G cutoff)
(B cutoff)
(G drive)
(B drive)
(Screen)
Sub
bright adjust-
ment
Video mode 1
(
→
1
←
)
Video mode 1
(
→
1
←
)
Video mode 1
(
→
1
←
)
Video mode 1
(
→
1
←
)
RCUT
GCUT
BCUT
GDRV
BDRV
Set to the
horizontal
single line
mode.
Video mode 1
(
→
1
←
)
Sub bright sig-
nal (NTSC)
SECAM color
bar signal
SECAM color
bar signal
SECAM color
bar signal
Raster signal
without color
burst
Sub bright
signal
1. Select COLC .
2. Adjust the color bar output amplitude
(the upper half p-p value).
* Adjust after adjusting SCNT.
1. Select COLS .
2. Adjust the color bar output amplitude (the
upper half p-p value).
* Adjust after adjusting COLC .
1. Select SRY .
2. Align the non-color component of the
color difference signal with the H-BLK
component level.
1. Select SBY .
2. Align the non-color component of the
color difference signal with the H-BLK
component level.
1. Set to the status shown to the left.
2. Slowly raise the screen and stop when
the R, G or B line is just barely visible.
3. Use this as the screen VR adjustment
position.
4. Use RCUT , GCUT and BCUT to
slowly raise lines other than that in item
2 until they are barely visible. (Adjust
until almost white.)
5. Cancel the horizontal single line mode.
6. Use a white balance checker and ad-
just repeatedly until the values of both
the bright and dark areas are correct.
7. Change the demodulation rate using a
brightness checker.
1. Make this adjustment after adjusting the
screen VR and white balance.
2. Adjust the number of blackened lines
of the sub bright signal.
Q501 #17
B-OUT
Q501 #17
B-OUT
Q501 #39
Cr OUT
Q501 #40
Cb OUT
Screen
adjust-
ment
Screen
adjust-
ment
1.9 (0-p)
±
0.2V(p-p)
Upper half
p-p value
2.4V(0-p)
±
0.2(p-p)
Upper half
p-p value
0
±
10mV
(p-p)
0
±
10mV
(p-p)
HIGH LIGHT
103cd/m 2
11500k
+0.0075uv
DARK
(17cd/m
2)
10500k
+0.0105uv
*The
adjustment
range is the
same as
before.
4
±
1.5 lines
20H
40H