Dell E1909W Service Manual page 30

Item
Test OSD 1.Signal is set as 1440×900@60Hz under General-1
function
2. LCM button are from left to right, checking whether each
single function key and compound function key can be worked.
Contrast Check 1. Set input mode to 1440×900@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 1440×900@60Hz, 32gray
Temperature
2. Measure color temperature, check if it complies with the
1. Use Chroma Pattern Generator to make sequence.
Modes switching VESA (640x480 800x600 1024x768 1152x864 1280x1024
check 1440×900@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.
When select VGA model and VGA cable is not plugged out,
VGA cable
detector self-test OSD will be floated.
Y measurement 1. Set brightness and contrast to default value 75 at 6500K
at default setting 2. With full white pattern, Y shall be 220 20 cd/m
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:1440×900@60Hz
check 2. Set Brightness& Contrast to default value (75%)
3. Do "Auto Adjustment"
4. Shut down PC to check whether there's flicker on the
Power saving 1. Mode:1440×900@60Hz
2. Pattern: full Black
3. Brightness: Max.
4. Contrast: Default
5. Check power consumption at each modes
Normal(with full
load)
scale pattern
following temperature :
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
center of the picture.
State Power Consumption
Stand By
Power Key Off
Content
LED color
37
2
1
29
Service Manual
Equipment
Chroma
Signal Generator
Chroma
Signal Generator
Chroma Signal
Generator and color
analyzer
Chroma
Signal Generator
Visual check
Chroma Signal
2
Generator and Color
Analyzer
Visual Inspection
Equipment::
Chroma Signal
Generator & PC
Chroma signal
generator and
Power meter
AC input:230V/50Hz
green
amber
no