Philips 107B30 Service Manual page 31

M36 107B3 GS_3
28
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7. Alignment of Vg2 cut-off point, white tracking
Equipment : 1. Video Test Generator-801GC (Quantum Data)
2. Color-analyzer (Minolta CA-100)
VG2 [(screen), at the bottom of the L.O.T.].
7.1 Apply a video signal in the 1024 x 768 with 68.7 kHz/85 Hz mode,
select the "full white pattern" (sizes 306 x 230 mm).
* Use color-analyzer (Minolta CA-100) to adjust R/G/B cutoff and
Gain.
OSD R/G/B cut-off and R/G/B gain can be accessed (for Philips
CRT), with initial data:
9300 K o
R cutoff = 62%, R gain = 71% (I C)
G cutoff = 62%, G gain = 71% (I C)
B cutoff = 62%, B gain = 71% (I C)
6500 K o
R cutoff = 62%, R gain = 71% (I C)
G cutoff = 62%, G gain = 71% (I C)
B cutoff = 62%, B gain = 71% (I C)
5500 K o
R cutoff = 62%, R gain = 71% (I C)
G cutoff = 62%, G gain = 71% (I C)
B cutoff = 62%, B gain = 71% (I C)
Brightness = 50%, Sub-Contrast = 88%, ABL = 58% (I C)
Step 1: To access factory mode
- Turn off monitor (don't turn off PC)
- Press " " and " " simultaneously on the front control
panel,then press " ",wait till the OSD menu with characters
" M30 107S P V0.82 20010207 (below OSD menu)" comes on the
screen of monitor as shown in Fig. 2.1.
MODEL SELECT
Factory
Mode
Indicator
M36 107B3
- If OSD menu disappears on the screen of monitor, press "
again (anytime), then the OSD menu comes on the screen again.
- Using " " to select " M30 107S P V0.82 20010207
- Press " " button to access/confirm the selection.
Bring up the "function adjustment" as shown in Fig. 2.2.
- Press " " or " " button for function selection as shown in
Fig. 2.2.
- Press " " button to access/confirm each item selection
(The cursor indicator will be changed from yellow colour to
red colour.)
- Using " " or " " : to increase or decrease the value.
Back
Electrical Adjustments (Continued)
2
2
2
2
2
2
2
2
2
2
V0.51 20010518
Fig. 2.1
.
9300 BIAS R G B
6500 BIAS R G B
5500 BIAS R G B
FOCUS(H V) VLINBAL
RASTER(H V) LIN ( H V ) SUB
V(OFFSET GAIN)
CORNER(T B) ABL
VG2 BPLUS
H ( EHT REGU)
LF (BRIGH SHARP)
48K SUB
EXIT
152 152
(for example: 152 is value of "BIAS R")
BIAS R G B : R(red) G(green) B(blue) cutoff
GAIN R G B : R(red) G(green) B(blue) gain
V FOCUS : Vertical Focus
VLIN BAL : Vertical Linearity Balance
USER : Horizontal size range
RASTER H: Horizontal DC (raster) Shift
RASTER V: Vertical DC (raster) Shift
HLIN : Horizontal Linearity
V LIN : Vertical Linearity
SUB : Zoom range
SUB : Sub Contrast
SUB : Sub Brigntness
V OFFSET : Vertical offset
V GAIN : Vertical Gain
ABL : Auto Beam Limit
T CORNER: Corner Correctionof TOP
B CORNER: Corner Correctionof BOTTOM
H (EHT REGU): Horizontal Extensive High Tension
LF : Light Frame
48K SUB : H-Size limit
7.2 Connect the video input, set brightness control at center, and
contrast control at maximum
7.3 Set R,G,B bias at 90 for CPT CRT ,at 160 for BGDCCRT,SDI CRT
R,G,B gain at 180 9300 k ,6500 K & 5500 K
ABL at 150 9300 k ,6500 K & 5500 K
SUB-CON at 225 (EEPROM preload value)
7.4 Adjust 9300K Color:
Adjust R3517 until raster appear to reach 0.1 FL
With color analyzer CA 100,
set R,G,B cut-off x=0.283, y=0.297, Y=0.10
7.5 Set R,G,B gain Y= 40+/- 1FL, x=0.283, y=0.297
7.6 Repeat 7.4,7.5 until RGB three guns get x=0.283, y=0.297,
readings on low Y=0.10+/-0.05FL and high Y=40+/-1FL
brightness of 9300.
7.7 Adjust 6500K color:
With color analyzer CA 100,
set R,G,B cut-off x=0.313, y=0.329, Y=0.10FL
"
7.8 Adjust 5500K color:
With color analyzer CA 100,
set R,G,B cut-off x=0.332, y=0.347, Y=0.10FL
7.9 Apply full white pattern of 9300 mode, adjust ABL to reach
32 +/- 1FL(at 9300 high brightness of R/G/B gain,
contrast at 100%)
7.10 Check full white at contrast and brightness at minimum
GAIN R G B
( for ref. 152, 38,71,242,202,226)
GAIN R G B
(for ref. 160,41,75,238,174,153)
GAIN R G B
( for ref. 0,120,95,70)
USER
(for ref. 127,127,255,41,80)
( for ref. 170,170,220)
SUB
(for ref. 70,65,152,255)
SUB
( for ref. 183,152)
(for ref. 96,96)
( for ref. 4,4)
(for ref. 230)
Fig. 2.2
0 0 0
(EEPROM preload value)
0 0 0
(EEPROM preload value)
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