ViewSonic VP2650WB Service Manual page 32

1. Measure each color temperature (C1, C2, C3, C4) by Minolta CA-110 (or equivalent
equipment).
2. Two methods can be used to adjust RED, GREEN, BLUE value of each color temperature,
C1, C2 & C3 to meet following spec requirement, the 1
IIC alignment protocol to do automatic adjustment, and the 2
must be in factory mode.
Color temperature
(C1:9300K set on OSD)
Color temperature
(C2:7500K set on OSD)
Color temperature
(C3:6500K set on OSD)
Color temperature
(C3:sRGB set on OSD)
Color temperature
(C4:5000K set on OSD)
Move cursor into "Clear User" tag and run to
3. Turns off the monitor power.
Preset Color Temperatures
sRGB
Preset 1
Preset 2
Preset 3 (Primary)
Preset 4
Preset Color Temperature
Adjustability
*Any gray level and Contrast/Brightness should not get reddish, greenish or bluish.
ViewSonic Corporation
x+/-
y+-
x+-
y+-
x+-
y+-
x+-
y+-
x+-
y+-
disable burn-in
It should meet IEC 61966-2-1 (1999-10) standard.
CCT (typ) = 9300K (u'
Δu'v'<0.01 (@ Full White pattern)
CCT (typ) = 7500K (u'
Δu'v'<0.01 (@ Full White pattern)
CCT (typ) = 6500K (u'
Δu'v'<0.01 (@ Full White pattern)
CCT (typ) = 5000K (u'
Δu'v'<0.01 (@ Full White pattern)
Each color preset shall be adjustable.
and Blue shall be individually controlled.
29
st
method is by using external PC and
nd
method is by manually and
0.283+/- 0.008
0.297+/- 0.008
0.299+/- 0.008
0.315+/- 0.008
0.313+/- 0.008
0.329+/- 0.008
0.313+/- 0.008
0.329+/- 0.008
0.345+/- 0.008
0.362+/- 0.008
mode.
=0.1888; v' =0.4457)
CCT CCT
=0.1935; v' =0.4586)
CCT CCT
=0.1978; v' =0.4684)
CCT CCT
=0.2044; v' =0.4808)
CCT CCT
Confidential - Do Not Copy
Red, Green,
VP2650wb-1