Philips FTL2.4E Service Manual page 98

EN 98 8. FTL2.4E AA
8.3.2 2fh ADC Alignment
Only necessary to set, when the A/D convertor or NVM is
replaced. Use the default values as mentioned in the table.
Table 8-2 "2fH ADC alignment"
Menu item
Red Gain RGB
Blue Gain RGB
Green Gain RGB
Red Offset RGB
Blue Offset RGB
Green Offset RGB
Red Gain YPbPr *
Blue Gain YPbPr *
Green Gain YPbPr *
Red Offset YPbPr *
Blue Offset YPbPr *
Green Offset YPbPr *
* = only for sets with YPbPr input
8.3.3 White D Alignment
• Set ACTIVE CONTROL to "Off" (via RC).
• In the TV -> PICTURE user menu set:
– DYNAMIC CONTRAST to "Off".
– COLOUR ENHANCEMENT to "Off".
– COLOUR to "0".
– CONTRAST to "100".
– BRIGHTNESS to "43".
• Go to the SAM and select ALIGNMENTS -> WHITE
POINT.
Method 1 (with colour analyser):
• Use a 100% white screen as input signal and set the
following values:
– COLOR TEMPERATURE: "Tint to be aligned".
– WHITEPOINTRED: "127".
– WHITEPOINTGREEN: "127".
– WHITEPOINTBLUE: "127".
– RED BL OFFSET: "7"
– GREEN BL OFFSET: "7".
• Measure with a calibrated (phosphor- independent) colour
analyser in the centre of the screen. Use a contactless
analyser (e.g. Minolta CA-210) to align an LCD TV. The
colour analyser may not touch the screen surface.
Consequently, the measurement needs to be done in a
dark environment.
Note: The colour analyser needs to be calibrated for LCD!
• Adjust, by means of decreasing the value of one or two
whitepoints, the correct x,y coordinates (see table "White D
alignment values"). Tolerance: dx,dy:
• Repeat this step for the other Colour Temperatures that
need to be aligned.
• When finished press "Store" to store the aligned values to
the NVM.
Table 8-3 White D alignment values
Cool
Coordinates
0.276
X
0.281
Y
Alignments
Value
106
112
133
40
41
43
115
118
102
59
56
35
0.004.
Normal Warm
0.287 0.314
0.292 0.320
Method 2 (without colour analyser):
If you do not have a colour analyser, you can use the default
values. This is the next best solution. The default values are
average values coming from production (statistics).
1. Select a COLOUR TEMPERATURE (e.g. COOL,
NORMAL, or WARM).
2. Set the RED, GREEN and BLUE default values according
to the values in the "Tint settings" table.
3. When finished press "Store" to store the aligned values to
the NVM.
Table 8-4 Tint settings
White Point R
White Point G
White Point B
8.3.4 Lum. Del.
With this Luminance Delay alignment, you place the luminance
information exactly on the chrominance information (brightness
is pushed onto the colour). Use a colour bar / grey scale pattern
as test signal.
• Lum. Delay PAL BG: Apply a PAL BG colour bar / grey
scale pattern as a test signal. Adjust this parameter until
the transients of the colour part and black and white part of
the test pattern are at the same position.
Default value is "7".
• Lum. Delay PAL I: Apply a PAL I colour bar/grey scale
pattern as a test signal. Adjust this parameter until the
transients of the colour part and black and white part of the
test pattern are at the same position.
Default value is "9".
• Lum. Delay SECAM: Apply a SECAM colour bar/grey
scale pattern as a test signal. Adjust this parameter until
the transients of the colour part and black and white part of
the test pattern are at the same position.
Default value is "9".
• Lum. Delay Bypass: apply a NTSC colour bar/greyscale
pattern as a test signal. Adjust this value until the transients
of the colour and black and white part of the test area are
at the same position.
Default value is "6".
8.4 Option Settings
8.4.1 Introduction
The microprocessor communicates with a large number of I
ICs in the set. To ensure good communication and to make
digital diagnosis possible, the microprocessor has to know
which ICs to address. The presence / absence of these specific
ICs (or functions) is made known by the option codes.
Notes:
• After changing the option(s), save them with the STORE
command.
• The new option setting is only active after the TV is
switched "off" and "on" again with the Mains switch (the
EAROM is then read again).
Cool Normal Warm
127 127 127
126 123 116
112 104 86
2
C