Acer AL2623W Servicehandleiding - Pagina 18
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Acer
Defect Type
Dot Shape(Particle、Scratch and
Bubbles in Display area or on The
Polarizer)
Line Shape
(Particles、Scratch、Fiber and
Bubbles in display area or on The
Polarizer)
Display non-uniformity
Scratch
Dirt
Bezel
Wrap
Sunken
No label
Invert label
Broken
Dirt
Label
Not clear
Word out of shape
Mistake
Position
Not enough
Screw
Limp
Connector
Connection status
FPC/FFC
Broken
5.
PICTURE CHECK
5.1 Check brightness uniformity
5.1.1 Test mode: 1920x1200 @ 60 Hz
5.1.2 Test pattern: pattern #41 of "WHITE"
5.1.3 Test tool: Color Analyzer Chroma7120
5.1.4 Set brightness and contrast to be maximum, apply pattern as Fig.3, it should be the following
requirement:
Specification Size
Black spots which appear when B/L
operating
0.15mm ≤ D ≤ 0. 5 mm
L ≤ 0.5mm and W ≤ 0.05 mm
0.5mm < L ≤ 5mm and
0.05mm < W ≤ 0.1mm
L > 5mm or W > 0.1mm
There should be non-uniformity through 5%
transparency of filter or judge by limit sample if
necessary.
No harm
No harm
No harm
No
Word can be read.
No
Be attached on right position
No
No
No bend on pins and damage
No
Min.
luminance
of
nine
points
Max.
luminance
of
nine
points
17
Count (N)
N ≤ 3
Ignored
N ≤4
N = 0
(backlight
)
75
%
≥
(backlight
)
Service Manual
Majo
Minor
r
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