Alignments
EN 25
L11M1.1L LA
6.
2011-Jun-24
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6.
Alignments
Index of this chapter:
6.1 General Alignment Conditions
6.2 Hardware Alignments
6.3 Software Alignments
6.4 ADC gain adjustment
6.5 TCON Alignment (= VCOM alignment)
6.6 Additional TCON Board
6.7 Option Settings
Note:
Figures below can deviate slightly from the actual
situation, due to the different set executions.
General:
The Service Default Mode (SDM) and Service
Alignment Mode (SAM) are described in chapter 5. 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 (depends on region):
–
AP-NTSC: 120 V
AC
or 230 V
AC
/ 50 Hz (
10%).
–
AP-PAL-multi: 120 - 230 V
AC
/ 50 Hz (
10%).
–
EU: 230 V
AC
/ 50 Hz (
10%).
–
LATAM-NTSC: 120 - 230 V
AC
/ 50 Hz (
10%).
–
US: 120 V
AC
/ 60 Hz (
10%).
•
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 (e.g. measure audio signals in relation to
AUDIO_GND).
Caution:
It is not allowed to use heatsinks as ground.
•
Test probe: Ri > 10 Mohm, Ci < 20 pF.
•
Use an isolated trimmer/screwdriver to perform
alignments.
6.2
Hardware Alignments
There are no hardware alignments foreseen for this chassis,
but below find an overview of the most important DC voltages
on the SSB. These can be used for checking proper functioning
of the DC/DC converters.
6.3
Software Alignments
With the software alignments of the Service Alignment Mode
(SAM) the Tuner and RGB settings can be aligned.
6.3.1
Tuner Adjustment (RF AGC Take Over Point)
Purpose:
To keep the tuner output signal constant as the input
signal amplitude varies.
No alignment is necessary, as the AGC alignment is done
automatically.
6.3.2
RGB Alignment
Before alignment, set the picture as follows:
White Tone Alignment:
•
Activate SAM.
•
Select “RGB Align.“ and choose a color temperature.
•
Use a 100% white screen as input signal and set the
following values:
–
“Red BL Offset” and “Green BL Offset” to “7” (if
present).
–
All “White point” values initial to “127”.
In case you have a color analyzer:
•
Measure with a calibrated (phosphor- independent) color
analyzer (e.g. Minolta CA-210) in the centre of the screen.
Consequently, the measurement needs to be done in a
dark environment.
•
Adjust the correct x,y coordinates (while holding one of the
White point registers R, G or B on max. value) by means of
decreasing the value of one or two other white points to the
correct x,y coordinates (see Table
6-1 White D alignment
values
). Tolerance: dx:
0.002, dy:
0.002.
•
Repeat this step for the other color Temperatures that need
to be aligned.
•
When finished return to the SAM root menu and press
STANDBY on the RC to store the aligned values to the
NVM.
Table 6-1 White D alignment values
If you do
not
have a color analyzer, you can use the default
values. This is the next best solution. The default values are
average values coming from production (statistics).
•
Set the RED, GREEN and BLUE default values per
temperature according to the values in the “Tint settings”
table.
•
When finished return to the SAM root menu and press
STANDBY on the RC to store the aligned values to the
NVM.
Description
Test
Point
Specifications (V)
Diagram
Min.
Typ.
Max.
+12VS
F118
11.7
12.3
12.91
B01_DC-DC
+3V3_STBY F113
3.2
3.3
3.4
B01_DC-DC
+3V3_SW
F133
3.17
3.34
3.5
B01_DC-DC
+1V25_SW
F131
1.18
1.25
1.31
B01_DC-DC
+5V_SW
F132
4.98
5.25
5.51
B01_DC-DC
+1V8_SW
F125
1.74
1.83
1.92
B01_DC-DC
+1V1_SW
F101
0.94
1.1
1.15
B01_DC-DC
+5VS
F235
4.94
5.2
5.46
B02A_Tuner_IF
+2V5_SW F136
2.38
2.5
2.62
B01_DC-DC
+5VTUN_DI
GITAL
F236
4.75
5
5.25
B02_Tuner_IF
VLS_15V6
FJ01
14.82
15.6
16.38
B08C_TCON DC/DC
VGH_35V
FM02
34.0
35.0
36.0
B08F_MINI LVDS
VGL_-6V
FJ14
-7.0
-6.0
-5.0
B08C_TCON DC/DC
VCC_3V3
FJ13
3.14
3.3
3.47
B08C_TCON DC/DC
VCC1V8
FJ05
1.71
1.8
1.89
B08C_TCON DC/DC
Picture Setting
Dynamic backlight
Off
Dynamic Contrast
Off
Color Enhancement
Off
Picture Format
Unscaled
Light Sensor
Off
Brightness
50
Color
0
Contrast
100
Value Cool (11000 K) Normal (9000 K) Warm (6500 K)
x
0.276
0.287
0.313
y
0.282
0.296
0.329
