Alignments - Philips TPM4.1E Service Manual

EN 18 6. TPM4.1E LA

6. Alignments

Index of this chapter:
6.1 General Alignment Conditions
6.2 Hardware Alignments
6.3 TV Mode display adjust
6.4 PC mode display adjustment
6.5 Gamma upload and V-com adjustment
6.6 Option Settings
6.7 Serial Number Definition
Note: The Service Alignment Mode (SAM) are described in
chapter 5. Service Modes, Error Codes, and Fault
Menu navigation is done with the CURSOR UP, DOWN, LEFT
or RIGHT keys of the remote control transmitter.
6.1 General Alignment Conditions
Perform all electrical adjustments under the following
conditions:
• Power supply voltage: 195 - 264 V
• Connect the set to the mains via an isolation transformer
with low internal resistance.
• Allow the set to warm up for approximately 15 minutes.
• Measure voltages and waveforms in relation to correct
ground.
Caution: It is not allowed to use heatsinks as ground.
• Test probe: R > 10 MΩ, C
i
• Use an isolated trimmer/screwdriver to perform
alignments.
6.2 Hardware Alignments
Not applicable.
6.3 TV Mode display adjust
6.3.1 White balance adjustment
Equipment Requirements:
Quantum Data Pattern Generator 801GD or 802G or 802R;
Apply 720P/60 at the pattern TVBAR100.
Alignment method:
Set Smart picture as "personal" (Brightness = 50,
Contrast = 50, Video contrast = 50, Colour = 50); Access to
SAM first, then to enable AUTO_COLOR to get HD ADC
OFFSET and HD ADC GAIN. Check whether 32 gray scales
are distinguishable.
6.3.2 Colour Temperature Alignment
Apply full white pattern, select smart setting to be Personal
(Brightness = 50, Contrast = 50, Video contrast = 50, and
Colour = 50). Adjust SCALER GAIN R G B to reach W/D and
luminance in SAM mode as below.
Select Color Temp in the SAM OSD. The 1931 CIE
chromaticity (X, Y) coordinates must be adjusted
according to Table 6-1.
Table 6-1 Reading with Minolta CA-110
Picture Temp
0.287 ± 0.005
Normal
0.276 ± 0.005
Cool
0.313 ± 0.005
Warm
If you do not have a colour analyser, you can use the default
2010-Jun-18
Alignments
Finding.
, 50/60 ± 3 Hz.
AC
< 20 pF.
i
x y
0.296 ± 0.005
0.282 ± 0.005
0.329 ± 0.005
values. This is the next best solution. The default values are
average values coming from production.
• Select a COLOUR TEMPERATURE (e.g. COOL,
NORMAL, or WARM).
• Set the RED, GREEN and BLUE default values according
to the values in Table 6-2
• When finished press OK on the RC, then press STORE (in
the SAM root menu) to store the aligned values to the NVM.
• Restore the initial picture settings after the alignments.
Table 6-2 White tone default settings
Screen
Picture mode size
Normal 32"
42"
Cool 32"
42"
Warm 32"
42"
2
Luminance >400 cd/m
picture at contrast 50, Video contrast 50 and brightness 100,
with temp color "cool".
Note: This group setting about colour temp is also applied in
TV/EX1/EX2/EXT3/VGA/HDMI/HDMI SIDE/AV SIDE. It means
that TV/EX1/EX2/EXT3/VGA/HDMI/HDMI SIDE/ AV SIDE use
one same setting.
6.4 PC mode display adjustment
6.4.1 AUTO colour adjustment
Set Brightness 100, Contrast 50, and apply 1024 × 768 @
60Hz mode with 50 Black and 50 White pattern at the factory
mode.
Activate AUTO-COLOR function for auto ADC offset and gain
setup. See Figure 6-1.
Figure 6-1 50-Black 50-White
6.5 Gamma upload and V-com adjustment
6.5.1 Gamma Upload
Press Remote control "123789+Info" Key, Gamma data will be
load in IC MAX9668ETP by FW
Colour temperature
Red Green
127 124 119
127 126 113
119 114 127
125 121 127
127 114 73
127 118 72
in the centre of the screen when "stand"
18870_209_100209.eps
Blue
100308