Philips 26MD257B/37 Service Manual page 176

74
TPM1.0U LA
8. Alignments
Index of this chapter:
8.1 Electrical Instructions
8.2 ISP Instructions
8.3 Serial Number Definition
8.4 WriteMTK_CSM_No_HDCP and WriteMTKHDCPKey Instructions
Notes: You could adjust the LCD/TV following this chapter when the LCD/TV has the below defect.
1. Change panel. 2. Change or repair main board. 3. LCD/TV color is not right. 4. The settings are disabled.
8.1 Electrical Instructions
8.1.1.Analog TV Mode display adjustment
8.1.1.1 White balance adjustment (B)
General set-up :
Equipment Requirements: Minolta CA-110 or Equivalent Color analyzer
Input requirements:
Input Signal Type
Input Signal Strength : 10mV (80 dBuV) terminal voltage.
Input Injection Point : TV Tuner input
Alignment method:
Initial Set-up:
1. Select source as
2. Set Smart picture as "Personal" and to be Contrast
Brightness=50
3. Apply "100% Full White"pattern by TV pattern generator.
4. Enter factory mode menu: press MENU + Numeric keys "062596" + MENU key
Then select "Factory" item.
Alignment:
1. Set color temperature to "NORMAL".
2.At FAC mode menu,
meet"NORMAL"color coordinates specification below. Then store those values to NVM.
3. Set color temperature to "WARM".
4.At FAC mode menu,
color coordinates specification below. Then store those values to NVM.
5.Set color temperature to "COOL".
6.At FAC mode menu,
color coordinates specicifcation below. Then store those values to NVM
Color temperature Normal/Warm/Cool (x, y) co-ordinates specification:
Picture Mode
Normal (8500
WARM (6500
COOL( 11500
If you have not CA-110, the following R,G and B values are for your reference.
7. Check the gray pattern should be distinguished and color bar is correct
Note:
1. Use Minolta CA-110 for color coordinates and luminance check.
2. Luminance >
TEMP B
3.Reset AV setting, smart picture shall be recalled to be "Rich" and
Brightness=55(LPL).
8.1.2.PC mode display adjustment
8.1.2.1Display quality adjustment
Use timing mode as describe in 2.2, and use the POPO (pixel on pixel off) pattern
Fluke 54200 or equivalent TV RF signal generator
: RF signal
1.Set to NTSC system,frequency=187.25MHZ(for NAFTAmodel),
with White pattern of 100%
2.Select Smart picture to Personal
"TV".
(LPL) , at normal menu mode.
adjust the CLR TEMP R, CLR TEMP G,
adjust the CLR TEMP R, CLR TEMP G, CLR TEMP B values to meet"WARM"
adjust the CLR TEMP R, CLR TEMP G, CLR TEMP B values to meet "COOL"
x
o
K)
0.291±0.005
o
K)
0.314±0.005
o
K) 0.273±0.005
Table 5: Reading with Minolta CA-110.
Normal/(8500°K) Cool/(11500°K) Warm/(6500°K)
R 117 144
G 112 130
B 108 123
2
400 cd/m in the center of the screen when CLR TEMP R, CLR TEMP G, CLR
set to 128 and Brightness control at 100; Contrast control at
8. Alignments
mode and check the x, y data.
=50 (LPL),
y
0.302±0.005
0.324±0.005
0.280±0.005
118
116
144
100
Contrast=60
Measurement/viewing selector Measurement/viewing selector
(FAC mode menu).
CLR TEMP B values to
(LPL),
Clear image Clear image