Philips 107E61/00, Service Manual

Page: 31 / 85

Go to cover page
El ectr i ca l Ins tr u ct i o ns
107 E 6 CRT
31
White alignment measurement equipment set -ups:
Setup A:
1
00x
1
00mm white block , 0.7Vpp input video signal, contrast
at 0%, 9 3 00 mode Calibrate CA 1 00, Low 9 3 00 RGB= 1 00
®
x=0.28
3
, y=0.297, Y=0.
1
0FL
Ó
0.05FL
Setup B: 1 00x 1 00mm white block , 0.7Vpp input video signal, contrast
at
1
00%, 9
3
00 mode Calibrate CA
1
00, High 9
3
00 RGB=
1
00
®
x=0.28
3
, y=0.297, Y=4
1
FL
Ó
1
FL
Setup C: 1 00x 1 00mm white block , 0.7Vpp input video signal, contrast
at 0%, 6500 mode Calibrate CA
1
00, Low 6500 RGB=
1
00
®
x=0. 313 , y=0. 3 29, Y=0. 1 0FL
Ó
0.05FL
Setup D:
1
00x
1
00mm white block , 0.7Vpp input video signal, contrast at
1 00%, 6500 modeCalibrate CA 1 00, High 6500 RGB= 1 00
®
x=0.
313
, y=0.
3
29, Y=
3
6FL
Ó
1
FL
Setup E: 1 00x 1 00mm white block , 0.7Vpp input video signal, contrast
at 0%, sRGB mode Calibrate CA 1 00, Low sRGB RGB= 1 00
®
x=0.
313
, y=0.
3
29, Y=0.
1
0FL
Ó
0.05FL
Setup F: 1 00x 1 00mm white block , 0.7Vpp input video signal, contrast
at
1
00%, sRGB mode Calibrate CA
1
00, High sRGB RGB=
1
00
®
x=0. 313 , y=0. 3 29, Y= 3 6FL
Ó
1 FL
Setup G: Full white (
3
06x2
3
0mm), 0.7Vpp input video signal, contrast at
1 00% , 9 3 00 mode Calibrate CA 1 00, High 9 3 00 RGB= 1 00
®
x=0.
313
, y=0.
3
29, Y=
3
0FL
Ó
1
FL
Adjustment procedure:
5. 3 . 1 Setup A, manually rotate Vg2 pot-meter on LOT until brightness
reaches
1
00 scale.
5. 3 .2 Setup A, adjust RGB cut-off (I
2
C) for all colors at 1 00
±
7 scale,
9
3
00 mode. (x=0.28
3
, y=0.297, Y=0.
1
0
±
0.05FL)
5. 3 . 3 Setup B, adjust RGB gain (I
2
C) for all colors at 1 00
±
2 scale,
9
3
00 mode. (x=0.28
3
, y=0.297, Y=4
1
±
0.5 FL)
5. 3 .4 Repeat 5. 3 .2, 5. 3 . 3 (RGB cut-off and gain) to get both low
and high 9
3
00 scales at
1
00. (0.
1
0FL
±
0.05FL for low scale;
4 1 FL
±
1 FL for high scale. x/y tolerance
±
0.005)
5. 3 .5 Setup C, adjust RGB cut-off (I
2
C) for all colors at 1 00
±
7 scale,
6500 mode. (x=0.
313
, y=0.
3
29, Y=0.
1
0FL
±
0.05FL)
5. 3 .6 Setup D, adjust RGB gain (I
2
C) for all colors at 1 00
±
2 scale,
6500 mode. (x=0.
313
, y=0.
3
29, Y=
3
6FL
Ó
1
FL)
5. 3 .7 Repeat 5. 3 .5, 5. 3 .6 (RGB cut-off and gain) to get both low and
high 6500 scales at
1
00.(0.
1
0FL
±
0.05FL for low scale;
3
6FL
±
1
FL
for high scale. x/y tolerance
±
0.005)
5.
3
.8 Setup E, adjust RGB cut-off (I
2
C) for all colors at
1
00
±
7 scale,
sRGB mode.(x=0. 313 , y=0. 3 29, Y=0. 1 0FL
±
0.05FL)
(same values as 6500 mode)
5.
3
.9Setup F, adjust RGB gain (I
2
C) for all colors at
1
00
±
2 scale, sRGB
mode.(x=0. 313 , y=0. 3 29, Y= 3 6FL
Ó
1 FL)(same values as 6500 mode)
5.
3
.
1
0 sRGB brightness at 50%. Adjust sRGB contrast (I
2
C) to get
Y=2 3 FL
Ó
1 FL for full white pattern.(0. 1 0FL
±
0.05FL for low scale,
2
3
FL
±
1
FL for high scale. x/y tolerance
±
0.005)
5.4 Setup G, adjust ABL (I
2
C) for 3 0FL
±
0.5FL, 9 3 00 mode.
The above alignment method may be changed, as long as the final
results are the same.(The above method has least amount of
adjustment and iteration steps.)
6.Adjustment of the pic ture geometry
6. 1 Alignment of primary geometry
6.
1
.
1
Apply Timing 7 (64KHz/60Hz, 1 280x 1 024) with black video signal, set
V-position at 50%, set H and V -size for visible raster edges at all sides.
(RGB cut-off can be increased temporarily to make raster visible. After
adjustment, restore RGB cut-off to original values.)
Slide switch
11
09 for centered raster in horizontal direction
.
Adjust V-offset (I
2
C) for centered raster in vertical direction.
Apply Timing 8 (68.7kHz / 85Hz) with crosshatch signal and
start geometry alignment.
6.
1
.2 Adjust the Horizontal Size to
3
06mm.
6. 1 . 3 Adjust the Horizontal Position for centered video.
6. 1 .4 Adjust the Vertical Size to 2 3 0 mm.
6. 1 .5 Adjust Vertical Position for centered video
6. 1 .6 Adjust picture tilt for correct TOP/BOTTOM lines.
(Picture tube should be mounted without tilt w.r.t. cabinet)
6. 1 .7 Adjust pincushion to get optimum vertical line.
6. 1 .8 Adjust trapezoid to get optimum vertical line.
6. 1 .9 Adjust balanced pincushion to get optimum vertical line.
6. 1 . 1 0 Adjust the parallelogram to get optimum vertical line.
6.
1
.
11
If needed, adjust the top / bottom corner control to get optimum
corner geometry. Top and bottom corner only affect top and bottom
60mm of the vertical lines.(6.
1
.7, 6.
1
.8, 6.
1
.9 and 6.
1
.
1
0 may need to
be readjusted.)
6.
1
.
1
2 Store the adjusted result and exit OSD.
(The values for pincushion, trapezoid, balance pincushion and
parallelogram can be copied to the other pre-set modes
to shorten alignment time.)
6.2 Other pre-set mode geometry adjustment
Use following procedure for all pre-set modes
(except 68.7kHz/85Hz)(Timing Table 1 - 8)
6.2. 1 Adjust the Horizontal Size to 3 06mm.
6.2.2 Adjust the Horizontal Position to center position.
6.2. 3 Adjust the Vertical Size to 2 3 0 mm.
6.2.4 Adjust the Vertical Position for correctly centered vertical video.
6.2.5 Adjust pincushion to get optimum vertical line.
6.2.6 Adjust trapezoid to get optimum vertical line.
6.2.7 Adjust balanced pincushion to get optimum vertical line.
6.2.8 Adjust the parallelogram to get optimum vertical line.
(6.2.5, 6.2.6, 6.2.7 and 6.2.8 may need some iteration.)
6.2.9 Store the set result and exit OSD.
6.
3
For preload modes, the entire image shall be displayed inside the
bezel, H-width: 3 06mm +/- 5mm, V -size: 2 3 0mm +/- 5mm, Display
center: < 1 0mm, Geometry: same as preset modes, by preloading
appropriate EEPROM data batch by batch. EHT regu lation: same as
preset modes.
1
07E6 Geometry alignment sequence background.
The new deflection controller SAA4848 has many advanced geometry
parameters that can be adjusted via factory mode. However, when the
correct sequence is not followed, the picture geometry result will be
poor. Most of the advanced parameters have been fixed for each CRT
source.Production may change the advanced geometry parameters to
get better result. When checking if changing these parameters gives
better results, please us e the following sequence.
1
: Start with video mode 68Khz/85Hz, crosshatch pattern. CRT facing
East,EHT correctly aligned, set well degaussed. Make sure that CRT is
correctly mounted in plastic front cabinet. (no rotation or offset mounting)
When using OSD window to adjust Pincushion/keystone etc, there can be
East West distortion due to OSD induced EHT variation. This can lead to
wrong geometry adjustment results. To avoid this effect, temporary
set OSD contrast to 0. After alignment set back to original value.
2: Set the following parameters in nominal pre-set condition
(in factory mode):
V-shift: 50%
V-size: For nominal V-size
H-shift: Centered video in raster
H-size: nominal H-size at raster middle position
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-
+/-