ViewSonic G90fB-4 Service Manual page 18

Tb
EO
MAX V-SIZE GAIN RANGE
VG
HG
HIGH BRIGHTNESS SELECT
SB
AB
D. To switches the input signal to the other Timing Mode. Please follow step A ~ C to get the optimum picture.
E. Select the "
to the original OSD window.(user's operating condition)
F. The setting data of the CONTRAST, BRIGHTNESS, PIN-BALANCE, PARALLELOGRAM, ROTATION,
COLOR TEMPERATURE are common mode saved in the memory. Don't needed adjust it individual at every
timing Mode and save in the memory.
3. White Balance, Luminance adjustment:
A. Press MENU Key to show OSD menu ,and press the down Key to select the "size/center" function, then press the
menu Key to enter second menu, press the down key to select "
area for modulation.
B. Set R,G,B gain DAC value for 50, R ,G ,B bias DAC value for 60.
C. Raster Pattern, Brightness & contrast ratio MAX, fix to G-BIAS,fix to 60. adjust R or B bias, make x=265±10,
y=290±10, adjust G2,make Y=3.5 cd/m
9300K,6500K,5000K color temprature.
D. Adjust R or G or B gain, make x=346±10, y=359±10, Y=150±5 cd/m
E. Adjust R or G or B gain, make x=313±10, y=329±10, Y=150±5 cd/m
F. Adjust R or G or B gain, make x=283±10, y=297±10, Y=150±5 cd/m
G. After modulation, it's necessary to check if the white balance accords with the normal specification. If not, which
needs reset.
4. Focus Adjustment:
A. Under 1024×768 Fv: 85Hz with character full page.
B. Adjust brightness to center and contrast to max.
ViewSonic Corporation
TOP BALANCE
EHT OFFSET
H-SIZE GAIN
RETURN
ABL ADJUSTMENT
" RETURN function and press the MENU Key, then the Factor Preset window will be returned
2
,and then adjust brightness,make Y=0.05 cd/m
EHT CURRENT
EU
EHT AUTO ADJUST
EA
Video IC dc off set
DC
H-frequency select
SW
Brightness Save
LH
V-CENTER OFFSET
VO
"(zoom) about 10S,,then enter into factory setting
2
,then save it into 5000K color temprature .
2
,then save it into 6500K color temprature .
2
,then save it into 9300K color temprature
Confidential - Do Not Copy
15
2
,then save it into
G90fB-4