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Picture Abnormal but Stable & size correct
C
Color absent
or wrong color
Use 256 gray scale with
R/G/B white
Yes
No
Segment for
specific color
Shadowing
Yes
Check VGA cable
(1)Too long?
(2)Quality no good?
Measure R/G/B input
use block pattern
No
Noisy
(1) VGA cable quality
bad
(2) Power(3.3V/2.5V)
have big noise
Yes
No
Scaler O/P or LVDS
I/P short or open
Use 32 or 64 gray scale
Noise at certain scale for
more than one color
LVDS O/P short or open
12
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VG510b/s
Содержание VLCDS27955-1W
Страница 8: ...5 ViewSonic Corporation Confidential Do Not Copy VG510b s 3 Front Panel Function Control Description ...
Страница 26: ...23 ViewSonic Corporation Confidential Do Not Copy VG510b s ...
Страница 36: ...11 PCB Layout Diagrams Main Board 33 ViewSonic Corporation Confidential Do Not Copy VG510b s ...
Страница 37: ...Control Board 34 ViewSonic Corporation Confidential Do Not Copy VG510b s ...