Dell E2009W Panduan Servis - Halaman 30

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Halaman Cetak

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

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.

VGA

cable

When select VGA model and VGA cable is not plugged out,

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

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 center

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

of the picture.

State

Power Consumption

Stand By

Power Key Off

Content

20 cd/m

LED color

Service Manual

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

green

amber