Philips 26MD257B/37 Service Manual page 177

to adjust the clock until no stripe and adjust the phase until clear picture.
("Auto"will be done every time switching to PC mode and mode change)
Check all preset 6 modes.
8.1.2.2 WHITE-D adjustment (B)
General set-up :
Equipment Requirements: Minolta CA-110 or Equivalent Color analyzer
Input requirements:
Input Signal Type
Input Signal Strength : 0.7 Vp-p linear voltage.
Input Injection Point : PC D-SUB input
Alignment method:
Initial Set-up:
1. Select source as
2. Set Contrast =
3. Apply "5 white block" pattern by VGA pattern generator.
4. Enter factory mode menu: press MENU + Numeric keys "062596" + MENU key
mode menu). Then select "Factory" item.
Alignment:
1. At FAC mode
ADC_GAIN_R, ADC_GAIN_G, ADC_GAIN_B and ADC_OFFSET_R, ADC_OFFSET_G,
ADC_OFFSET_B. Then store those values to NVM.
2. Set color temperature to "NORMAL".
3. At FAC mode menu,
meet "NORMAL" color coordinates specification below. Then store those values to NVM.
4. Set color temperature to "WARM".
5. At FAC mode menu,
meet "WARM" color coordinates specification below. Then store those values to NVM.
6. Set color temperature to "COOL".
7. At FAC mode menu,
meet "COOL" color coordinates specicifcation below. Then store those values to NVM.
Color temperature Normal/Warm/Cool (x, y) co-ordinates specification:
o
Normal (8500 K)
o
WARM (6500 K)
o
COOL( 11500 K)
Readings with Minolta CA-110.
8.1.2.3 Check grayscale
Apply 32 gray pattern.
Check the color poor & noise condition of 32 gray pattern.
8. Alignments
Chroma 2250 or equivalent PC signal generator
: PC VGA signal
1. 1024X768/60Hz PC mode with 5 white block pattern. (see pattern-1)
2. Select Smart picture to Normal
OR
Pattern-1
"PC".
50 (LPL) and Brightness=50
menu, select AUTO_COLOR item. Then press "OK" key to adjust
adjust the CLR TEMP R, CLR TEMP G, CLR TEMP B values to
adjust the CLR TEMP R, CLR TEMP G, CLR TEMP B values to
adjust the CLR TEMP R, CLR TEMP G, CLR TEMP B values to
X Picture Mode
0.291±0.005
0.314±0.005
0.273±0.005
mode and check the x, y data.
(LPL) , at normal menu mode.
y
0.302±0.005
0.324±0.005
0.280±0.005
TPM1.0U LA
(FAC
75