Dell 2209WA Service Manual page 43

Item
Test OSD 1.Signal is set as 1680×1050@60Hz under General-1
Service Manual
2. LCM button are from left to right, checking whether each
function
single function key and compound function key can be worked.
Contrast Check 1. Set input mode to 1680×1050@60Hz
2. Set to 32gray scale pattern
3. Set contrast to the maximum. At most 6 bars cannot be
distinguished.
Color 1. Do "Auto color Balance" at 1680×1050@60Hz, 32gray
Temperature
2. Measure color temperature, check if it complies with the
following temperature :
1. Use Chroma Pattern Generator to make sequence.
Modes switching VESA (640x480 800x600 1024x768 1152x864 1280x1024
check 1680×1050@60Hz), the detail supported modes (see table 1)
and power saving signal.
2. Confirm the above timing modes must be full screen and
the picture must be normal.
3. LED is amber at power saving mode.
VGA cable
When select VGA model and VGA cable is not plugged out,
detector
self-test OSD will be floated.
Minimum 1. LCD minimum luminance spec is 200 cd/m2 (0-15 months from
luminance mfg. date)
measurement: 0-15 months: > 80% of minimum luminance
2.
OSD Lock Test
Soft Lock: When OSD is locked, this icon should appear for only
2 seconds with all buttons pressed, except for the "Menu" and
"Power" ones.
Hard Lock: Press "Menu" button for 15 seconds enables the
"locked" icon to be displayed, which will lock All buttons
expect for the "Power". Press "Menu" button for another 15
seconds enables the "unlock" icon to be shown.
Panel Flicker 1. Mode:1680×1050@60Hz
check 2. Set Brightness& Contrast to default value (75%)
3. Do "Auto Adjustment"
4. check whether there's flicker on the center of the picture.
Power saving 1. Mode:1680×1050@60Hz
2. Pattern: full Black
3. Brightness: Max.
4. Contrast: Default
5. Check power consumption at each modes
Max brightness
scale pattern
Warm x=0.328 +/- 0.03, y=0.344+/-0.03
Desktop x= 0.313 +/- 0.03, y=0.329+/-0.03
Cool x= 0.283 +/- 0.03, y=0.298+/-0.03
State Power Consumption
＜125W(with USB
& Audio load)
＜100W(without
Power
USB and without
Stand By
Content
LED color
Audio)
＜1W
Amber
42
＜ Ｗ
Equipment
Chroma
Signal Generator
Chroma
Signal Generator
Chroma Signal
Generator and color
analyzer
Chroma
Signal Generator
Visual check
Chroma Signal
Generator and Color
Analyzer
Visual Inspection
Equipment::
Chroma Signal
Generator & PC
Chroma signal
generator and
Power meter
AC input:230V/50Hz
Blue