Acer S191HQL, Service Manual

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1.2 General Requirements:
1.2.1 Test Condition:
All tests shall be performed under the following conditions, unless otherwise specified.
Warm up time > 30 min.
AC supply voltage 230V± 5%, 50± 3 Hz
Ambient temperature
20

C

5

C
Humidity
65%

20%
Display mode 1366 x 768, 60 Hz, all white
e-color mode Set to “User” mode
Contrast control Set to The value under user mode, which allows that the
brightest two of 32 linear distributed gray-scales (0
～
700mv)
can be distinguished.
Color temperature 6500°K
Brightness control The value under user mode
Analog Input signal 700 mVss
Picture position and size Factory preset value,
Viewing angle 90 ° H and V
Viewing distance 40 cm for LCD performance, 20 cm for LCD failures
Ambient illumination Dark room (< 1 cd/m
2
)
1.2.2 Test Equipment: CHROMA 6630.
1.3 Electrical:
This section describes the electrical requirement of the monitor. Below is the block diagram.
Led drive
19V
AC-IN
100V-240V
Flat Panel and
LED backlight
Main Board
Video signal, DDC
HOST Computer
Key Board
Adapter