Dell S1909WXf Service Manual page 29

Item
Test OSD 1.Signal is set as 1440×900@60Hz under General-1
2. LCM button are from left to right, checking whether each
function
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
Color 1. Do "Auto color Balance" at 1440×900@60Hz,
Temperature
2. Measure color temperature, check if it complies with
1. Use Chroma Pattern Generator to make sequence.
Modes VESA (640x480 800x600 1024x768 1152x864
switching check 1280x1024 1440×900@60Hz), the detail supported
modes (see table 1) and power saving signal.
2. Confirm the above timing modes must be full screen
3. LED is amber at power saving mode.
VGA cable
When select VGA model and VGA cable is not plugged
detector
out, self-test OSD will be floated.
Y measurement 1. Set brightness and contrast to default value 75 at
at default 6500K
2. With full white pattern, Y shall be 220 ± 20 cd/m
setting
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
single function key and compound function key can be
worked.
distinguished.
32gray scale pattern
the following temperature :
Warm x=0.328 +/- 0.015, y=0.344+/-0.015
Standard x= 0.313 +/- 0.015, y=0.329+/-0.015
Cool x= 0.283 +/- 0.015, y=0.298+/-0.015
and the picture must be normal.
center of the picture.
State Power Consumption
Normal
Stand By
Power Key Off
Content
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Service Manual
Equipment
Chroma
Signal Generator
Chroma
Signal Generator
Chroma Signal
Generator and
color analyzer
Chroma
Signal Generator
Visual check
Chroma Signal
Generator and
2
Color Analyzer
Visual Inspection
Equipment::
Chroma Signal
Generator & PC
Chroma signal
generator and
Power meter
AC
input:230V/50Hz
LED color
White
Amber
No