ViewSonic PerfectFlat E90fB-4, Service Manual, Page: 18 / 60

ViewSonic Corporation E90fB-4
15
Confidential-Do Not Copy
HM MAX H-SIZE RANGE BI SET BURN-IN
Hs
SUB H-SIZE
Bb
BOTTOM BALANCE
Hb H-SIZE WAVE BALANCE Bp B+ VOLTAGE ADJUST
Tb
TOP BALANCE
EU
EHT CURRENT
EO EHT OFFSET EA EHT AUTO ADJUST
VG
MAX V-SIZE GAIN RANGE
DC
video IC dc off set
HG H-SIZE GAIN SW
H-frequency select
SB
HIGH BRIGHTNESS SELECT
LH
Brightness Save
RETURN VO V-CENTER OFFSET
D. To switches the input signal to the other Timing Mode. Please follow step A ~ C to get the optimum picture.
E. Select the " " RETURN function and press the MENU Key, then the Factor Preset window will be returned
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 “ ”(zoom) about 10S,,then enter into factory setting
area for modulation.
B. Set R,G,B gain DAC value for 30, R ,G ,B bias DAC value for 40.
C. Raster Pattern, Brightness & contrast ratio MAX, fix to G-BIAS,fix to 40. adjust R or B bias, make x=265
±
10,
y=290
±
10, adjust G2,make Y=3.0 cd/m
2
,and then adjust brightness,make Y=0.05 cd/m
2
,then save it into
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
2
,then save it into 5000K color temprature .
E. adjust R or G or B gain, make x=313
±
10, y=329
±
10, Y=150
±
5 cd/m
2
,then save it into 6500K color temprature .
F. adjust R or G or B gain, make x=283
±
10, y=297
±
10, Y=150
±
5 cd/m
2
,then save it into 9300K color temprature
G. After modulation, it’s necessary to check if the white balance accords with the normal specification. If not, which
needs reset.