Alignments
6.
6.
Alignments
Index of this chapter:
6.1 General Alignment Conditions
6.2 Hardware Alignments
6.3 Software Alignments
6.4 Display Option Settings
6.5 Reset of Repaired SSB
Note:
The Service Alignment Mode (SAM) are described in
chapter
5. Service Modes, Error Codes, and Fault Finding
.
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: 120 - 230 V
AC
, 50 ± 10 Hz.
•
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: R
i
> 10 M
Ω
, C
i
< 20 pF.
•
Use an isolated trimmer/screwdriver to perform
alignments.
6.1.1
Alignment Sequence
Set the correct options:
•
In SAM, select “Options” and then “Option numbers”
•
Fill in the option numbers for “Group 1” and “Group 2”
according to the set sticker (see also section
•
Press “OK” on the remote control
before
the cursor is
moved to the left
•
In submenu “Option numbers” select “Store” and press OK
on the RC, or
•
In main menu, select “Store” again and press OK on the RC
•
Switch the stand to standby.
Warm the set up for >15 minutes.
6.2
Hardware Alignments
Not applicable.
6.3
Software Alignments
Put the set in SAM mode (see chapter 5. Service Modes, Error
Codes, and Fault Finding). The SAM menu will now appear on
the screen. Select “RGB Align” and go to one of the sub menus.
The alignments are explained below.
The following item can be aligned:
•
White point.
To store the data:
•
Press OK on the RC
before the cursor is moved to the
left
.
•
In main menu select “Store” and press OK on the RC.
•
Press MENU on the RC to switch back to the main menu.
•
Switch the set to stand-by mode.
For the next alignments, supply the following test signals via a
video generator to the RF input:
•
EU/AP-PAL models:
a PAL B/G TV-signal with a signal
strength of at least 1 mV and a frequency of 475.25 MHz
•
US/AP-NTSC models:
an NTSC M/N TV-signal with a
signal strength of at least 1 mV and a frequency of 61.25
MHz (channel 3).
•
LATAM models:
an NTSC M TV-signal with a signal
strength of at least 1 mV and a frequency of 61.25 MHz
(channel 3).
•
DVB-T models:
a DVB-T signal with the following
specifications:
- frequency: 546.00 PID
- video: 0B 06 PID
- PCR: 0B 06 PID
- Audio: 0B 07.
6.3.1
White Point
•
Choose “TV menu”, “TV Settings” and then “Picture” and
set “Smart Picture” to “Vivid” mode.
White point alignment LCD screens:
•
Use a 100% white screen as input signal and set the
following values:
–
“Colour temperature”: “Normal”.
–
All “White point” values to: “127”.
–
“Red BL offset” value to “240” for HDMI source.
–
“Green BL offset” value to “240” for HDMI source.
–
“Red BL offset” value to “0” for VGA source.
–
“Green BL offset” value “0” for VGA source.
In case you have a colour analyser:
•
Measure with a calibrated contactless (max. 25 mm) colour
analyser 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 127) by means of
decreasing the value of one or two other white points to the
correct x, y coordinates (see
). Tolerance: dx:
±
0.004, dy:
±
0.004.
•
Repeat this step for the other colour temperatures that
need to be aligned.
•
When finished press “OK” on the RC and 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 6-1 White D alignment values
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.
•
Select a “COLOUR TEMPERATURE” (e.g. “COOL”,
“NORMAL”, or “WARM”).
•
Set the White point “RED”, “GREEN” and “BLUE” default
values according to the values in
.
•
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.
Value
Cool (11000K)
Normal (9000K)
Warm (6500K)
x
0.276
0.287
0.313
y
0.282
0.296
0.329
