Philips PL22.06 Service Manual page 24

1. Purity Check Mode
This mode cycles through full-screen displays of red,
green, blue, and white to check for non-active pixels.
1. Enter the service mode.
2. Press [BLUE] button on the remote control unit to
select Purity Check Mode.
3. Each time the [CHANNEL UP/DOWN] buttons is
pressed, the display changes as follows.
Purity Check Mode
CHANNEL
DOWN
Flicker mode
Frame mode
White mode
White (L127, L60) mode
Black mode
V-Ramp mode
H-Ramp mode
V-Ramp (red, green, blue)
mode
Red, Green, Blue mode
Note:
When entering this mode, the default setting is Flicker mode.
4. To cancel or to exit from the Purity Check Mode,
press [RIGHT] button of cursor keys.
CHANNEL
UP
CHANNEL CHANNEL
DOWN UP
CHANNEL CHANNEL
DOWN UP
CHANNEL CHANNEL
DOWN UP
CHANNEL CHANNEL
DOWN UP
CHANNEL CHANNEL
DOWN UP
CHANNEL CHANNEL
DOWN UP
CHANNEL CHANNEL
DOWN UP
CHANNEL CHANNEL
DOWN UP
The White Balance Adjustment should be
performed when replacing the LCD Panel
or Digital Main CBA.
2. White Balance Adjustment
Purpose: To mix red and blue beams correctly for
pure white.
Symptom of Misadjustment: White becomes bluish
or reddish.
ITEM
Color temperature
Input Signal
Measurement point Screen center
M. EQ.
Aging time
MODE setting of TV Service MODE-Cool
Ambient
temperature
1. Operate the unit for more than 30 minutes.
2. Enter the service mode.
3. Press [ • (DOT)] button three times on the remote
control unit to select "Drive setting" mode. "Drive-"
appears in the screen.
4. Set the color analyzer at the CHROMA mode and
zero point calibration. Bring the optical receptor
pointing at the center of the LCD-Panel.
To avoid interference from ambient
light, this adjustment should be
performed in a dark room.
Perpendicularity
L=3cm
Note: The optical receptor must be set
perpendicularly to the LCD Panel surface.
5. Press [3] button to select the "HDB" for High Drive
Blue adjustment. ("HDB" appears in the screen.)
5-2
SPECIFICATION
x= 0.272 ± 4%
y= 0.278 ± 4.5%
Internal pattern
(30/50/80% raster)
CA-310 (KONICA MINOLTA
Luminance meter) or
measuring instrument as
good as CA-310.
30min.
(Service MODE-Cool / 100IRE
Raster HDMI 1080i@60)
25°C ± 5°C
Color Analyzer
PL22.06-A_EA