Alignments - Philips 4101 Series Service Manual

EN 22 6. TPN16.2E LA

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
6.1 General Alignment Conditions
Perform all electrical adjustments under the following
conditions:
• Power supply voltage: 90 - 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 (e.g. measure audio signals in relation to
AUDIO_GND).
Caution: It is not allowed to use heat sinks as ground.
• Test probe: R > 10 MW, C
i
• Use an isolated trimmer/screwdriver to perform
alignments.
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 RGB Align and go to one of the sub menus.
The alignments are explained below.
The following items can be aligned:
• White point.
To store the data:
• Press OK on the RC before the cursor is moved to the
left.
• 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:
• 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 RGB Alignment
Before alignment, set the picture as follows:
Picture Setting
Dynamic backlight
Dynamic Contrast
Color Enhancement
Picture Format
Light Sensor
Brightness
Color
Contrast
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 "128".
2016-Jul-15
Alignments
, 50/ 60 ± 3 Hz.
AC
< 20 pF.
i
5. Service Modes, Error
Off
Off
Off
Unscaled
Off
50
0
100
In case you have a colour analyser:
• Measure with a calibrated (phosphor- independent) color
analyser (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
values). Tolerance: dx: ± 0.003, dy: ± 0.003.
• Repeat this step for the other colour 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
Value Cool (11000 K)
x 0.276
y 0.282
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).
6.3.2 Display Adjustment
You can use the default values. The default values are average
values coming from production.
• Enter SAM mode.
• Select a colour temperature (e.g. COOL, NORMAL, or
WARM).
• Set the RED, GREEN and BLUE default values according
to the values in
• When finished press OK on the RC, then press STORE to
store the aligned values to the NVM.
• Restore the initial picture settings after the alignments.
Table 6-2 White tone default settings
Picture mode
Normal (9000K)
back to
div. table
6-1 White D alignment
Normal (9000 K) Warm (6500 K)
0.287
0.296
Table 6-2.
Colour temperature
Screen size Red Green
32PFH4101/88 117 128
32PFT4101/12 117 128
32PFK4101/12 118 127
32PFT4101/60 116 125
32PHH4101/88 117 126
32PHT4101/12 116 127
32PHK4101/12 116 125
32PHT4101/60 117 124
32PHH4201/88 118 127
32PHT4201/12 117 124
32PHK4201/12 115 125
32PHT4201/60 116 123
40PFH4101/88 121 128
40PFT4101/12 122 127
40PFK4101/12 121 126
40PFT4101/60 120 124
40PFT4111/12 122 125
40PFH4201/88 121 124
40PFT4201/12 122 123
40PFK4201/12 121 122
48PFH4101/88 125 119
48PFT4101/12 124 118
48PFK4101/12 124 119
48PFT4101/60 123 118
0.313
0.329
Blue
122
121
122
120
120
120
121
121
120
122
123
121
107
107
108
106
108
107
106
105
126
126
127
125