Alignments - Philips TCM2.0E Service Manual

8. Alignments

Index of this chapter:
8.1 Electrical Alignments
8.2 Hardware Alignments
8.3 Software Alignments
Note:
The Service Modes are described in chapter 5. Menu
navigation is done with the CURSOR UP, DOWN, LEFT or
RIGHT keys of the remote control transmitter.
8.1 Electrical Alignments
Perform all electrical adjustments under the following
conditions:
• Power supply voltage (depends on region):
– AP-NTSC: 120 VAC or 230 VAC / 50 Hz (± 10%).
– AP-PAL-multi: 120 - 230 VAC / 50 Hz (± 10%).
– EU: 230 VAC / 50 Hz (± 10%).
– LATAM-NTSC: 120 - 230 VAC / 50 Hz (± 10%).
– US: 120 VAC / 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 60 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 > 10 MΩ, C
i
• Use an isolated trimmer/screwdriver to perform
alignments.
8.2 Hardware Alignments
Not applicable.
8.3 Software Alignments
8.3.1 White Balance Adjustment (VGA Mode)
Only VGA input requires colour temperature adjustment as all
other inputs or relative ones. Both WARM and COOL colour
coordinates are also relatives to NORMAL colour temperature
mode ones.
Equipment requirements: Colour analyser (e.g Minolta CA-
210).
Pre conditions:
• Picture Preset: Standard.
• Black Expand: Off.
• Tone: Normal.
• Dynamic Contrast: Off.
Colour Temp Alignment
Apply a 1366×768@50Hz signal with white pattern, set
"brightness" at 100%, and "contrast" at 50%. Adjust the R, G,
and B sub-gain for the screen centre.
The 1931 CIE chromaticity (x, y) co-ordinates shall be:
Table 8-1 Alignment for 19", 20", and 22" with colour
analyser
Cool (9000K)
x (70 IRE) 0.289 +/- 0.003 0.296 +/- 0.003
y (70 IRE) 0.291 +/- 0.003 0.299 +/- 0.003
< 20 pF.
i
Normal (8000K) Warm (6500K)
0.314 +/- 0.003
0.319 +/- 0.003
Alignments TCM2.0E LA
Table 8-2 Alignment for 26" with a colour analyser
Cool (11000K) Normal (9000K) Warm (6500K)
x (70 IRE) 0.278 +/- 0.003 0.289 +/- 0.003
y (70 IRE) 0.278 +/- 0.003 0.291 +/- 0.003
8.3.2 Display Code
When after an SSB or display exchange, the display option
code is not set properly; it will result in a TV with "no display" or
strange resolution.
Therefore, it is required to set this display option code after
such a repair.
To do so, press (slowly) the following key sequence on a
standard RC transmitter: "062598" directly followed by
"MENU" and "xxx", where "xxx" is a 3 digit decimal value of
the panel type: see column "Display code" in table below.
When ready, the set will go to stand-by.
After this, perform a cold start.
LCD Panel:
AUO 19"
CMO 19" - M190Z1-L01
LG 20" - LC201V02-SDD1
AUO 22"
CMO 22" - M220Z1-L03
AUO 26" - T260XW03 V3
AUO 26" VM
CMO 26"
8. EN 73
0.314 +/- 0.003
0.319 +/- 0.003
Display Code:
096
094
093
097
022
030
098
095