BenQ M2700HD, Service Manual, Page: 17 / 53

BenQ M2700HD Service Manual
16
Color
Temperature 1. Do “Auto Color Balance” at 1920×1080@60Hz, 32gray shades
2. Measure color temperature, check it complies with the
following temperature :
5800K x=0.326 +/- 0.02, y = 0.342+/-0.02
6500K x = 0.313 +/- 0.02, y = 0.329+/-0.02
9300K x = 0.283 +/- 0.02, y = 0.297+/-0.02
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Chroma Signal Generator
and color analyzer
Modes
switching
check
1. Use Chroma Pattern Generator to make sequence.
VESA (640x480 800x600 1024x768 1440x900 1920x1080),
and power saving signal,etc.
2. Confirm the above timing modes must be full screen and
the picture must be normal.
3. LED is amber at power saving mode.
Chroma
Signal Generator
VGA cable
detector
When VGA cable is not plugged, the monitor will work in power saving
mode.
Visual check
Chroma Signal Generator
Panel Flicker
check
1. Mode: 1920×1080@60Hz
2. Set Brightness& contrast to default value
3. Do “Auto Adjustment”
4. Shut down PC to check whether there’s glitter on the center
of the picture.
Chroma signal generator
& PC
Power saving 1.Mode: 1920×1080@60Hz
2. Pattern: full white
3. Brightness: Max.
4. Contrast: Default
5. Check power consumption
at each mode
Chroma signal generator
Status
H-sy
nc
V-sy
nc
Video Power LED
Power On on on active ≤ 85W Green
Power Saving
off on blanked < 1W Amber
on off blanked < 1W Amber
off off blanked < 1W Amber
Power Off -- -- -- < 0.5W Off
Remark:
the table is for VGA,DVI and HDMI. But for S-Video, composite and component: power off < 0.5W.
the three ports will not go in power saving.