Alignments - Sharp LC-32LE631E Service Manual

LC-32LE631
LC-40LE631
LC-46LE631

6. Alignments

Index of this chapter:
6.1 General Alignment Conditions
6.2 Hardware Alignments
6.3 Software Alignments
6.4 Option Settings
6.5 Reset of Repaired SSB
6.6 Total Overview SAM modes
6.1 General Alignment Conditions
Perform all electrical adjustments under the following
conditions:
• Power supply voltage (depends on region):
– AP-NTSC: 120 VAC or 230 V
– AP-PAL-multi: 120 - 230 V
– EU: 230 V / 50 Hz ( 10%).
AC
– LATAM-NTSC: 120 - 230 V
– US: 120 V / 60 Hz ( 10%).
AC
• 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 heat sinks as ground.
• Test probe: Ri > 10 M , Ci < 20 pF.
• Use an isolated trimmer/screwdriver to perform
alignments.
6.1.1 Alignment Sequence
• First, set the correct options:
– In SAM, select "Option numbers".
– Fill in the option settings for "Group 1" and "Group 2"
Table 6-6
according to the set sticker (see also paragraph
Option Settings).
– 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 set to Stand-by.
• Warming up (>15 minutes).
6.2 Hardware Alignments
Not applicable.
6.3 Software Alignments
Put the set in SAM mode (see Chapter
Codes, and Fault Finding). The SAM menu will now appear on
the screen. Select ALIGNMENTS and go to one of the sub
menus. The alignments are explained below.
The following items can be aligned:
• White point
• Ambilight.
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
• Switch the set to stand-by mode.
For the next alignments, supply the following test signals via a
video generator to the RF input:
ALIGNMENTS
/ 50 Hz ( 10%).
AC
/ 50 Hz ( 10%).
AC
/ 50 Hz ( 10%).
AC
6.4
5. Service Modes, Error
64
• 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).
6.3.1 White Point
• Choose "TV menu", "Setup", "More TV Settings" and then
"Picture" and set picture settings as follows:
Picture Setting
Contrast
Brightness
Colour
Light Sensor
Picture format
• "Brilliant colour processor +"
Picture Setting
Dynamic Contrast
Dynamic Backlight
Colour Enhancement
Gamma
• Go to the SAM and select "Alignments"-> "White point".
White point alignment LCD screens:
• Use a 100% white screen (format: 720p50) to the HDMI
input and set the following values:
– "Colour temperature": "Cool".
– All "White point" values to: "127".
In case you have a colour analyser:
• Measure, in a dark environment, with a calibrated
contactless colour analyser (Minolta CA-210 or Minolta
CS-200) in the centre of the screen and note the x, y value.
• Change the pattern to 90% white screen. If a Quantum
Data generator is used, select the "GreyAll" test pattern at
level = 230.
• 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
values - LED - Minolta
dy: +/- 0.002.
• 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 - LED - Minolta CA-210
Value Cool (9420K)
0.280
x 0.282
0.293
y 0.298
100
50
0
Off
Unscaled
Off
Off
Off
0
(see Table 6-1 White D alignment
CA-210. Tolerance: dx: +/- 0.002,
Normal (8120K) Warm (6080K)
0.291 0.318
0.292 0.320
0.308 0.341
0.311 0.345