Service manual

ViewSonic Corporation Confidential - Do Not Copy Q7b-3
11
2-9 IMAGE PERFORMANCE
Display Size
Horizontal Display Size, Primary Preset Full Screen
Vertical Display Size, Primary Preset Full Screen
Luminance
Lv (Max) –Condition:
Brightness / Contrast = 100%
Color Temperature = User (R/G/B=100)
Lv (Max) = The Luminance requirement of
section 2-6 “TFT LCD PANEL”
Lv (NATIVE) –Condition:
Brightness = Default / Contrast = Default
Color Temperature = NATIVE
Lv (NATIVE) / Lv (Max) x 100% > 85%
Lv (COOL) –Condition:
Brightness = Default / Contrast = Default
Color Temperature = COOL
Lv (COOL) / Lv (Max) x 100% > 70%
Lv (WARM) –Condition:
Brightness = Default / Contrast = Default
Color Temperature = WARM
Lv (WARM) / Lv (Max) x 100% > 70%
Contrast Ratio
CR(Max) –Condition:
Contrast / Brightness = 100%
Color Temperature = User (R/G/B=100)
Same as the Contrast Ratio in section 2-
6
“TFT LCD PANEL”
Saturation
Contrast = Default
Brightness = Default
Test pattern = 128-gray
NO VISIBLE SATURATION
Preset Color Temperatures
Color Temperature = WARM
(CCT around 5500K)
x = 0.332 ± 0.03
y = 0.348 ± 0.03
Color Temperature = NATIVE
(CCT around 6500K)
x = 0.313 ± 0.03
y = 0.329 ± 0.03
Color Temperature = COOL
(CCT around 9300K)
x = 0.283 ± 0.03
y = 0.298 ± 0.03
*No redish, greenish or bluish tint under any color setting (base on PVT sample)
Video Cards Compatibility
Peaking Performance : Peaking is not adjustable
Raster Artifacts
● Video Artifacts : No visible streaking, sag, or smearing artifacts when driven by the
specified video cards in the primary mode and after user adjustment to best condition
● Power Supply, and Grounding Artifacts : No visible artifacts in any specified video mode
within the horizontal or vertical frequency range of the monitor
● Temperature Drift : Image shall not drift or lose fine-tune adjustment