Electrical Requirement; Test Condition - Acer B223PWL Service Manual

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1.2 General Requirements:
1.2.1 T est Condition:
All tests must be performed under "standard testing conditions" unless otherwise specified.
Warm up time
AC supply voltage
Ambient temperature
Humidity
Display mode
e-color mode
Contrast control
Color temperature
Brightness control
Analog Input signal
Picture position and size
Viewing angle
Viewing distance
Ambient illumination
1.2.2 T est Equipment: CHROMA 6630.
1.3 Electrical:
This section describes the electrical requirement of the monitor. Below is the block diagram.
Power board
AC-IN
100V-240V
The LCD monitor will contain a main board, a power board and a key board which house the flat panel control
logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the
backlight of panel and the main board chips each voltage. The function key board is used for OSD control,
monitor power ON/OFF and the LED indicator for power status.
> 30 min.
230V± 5%, 50± 3 Hz
20C  15C
65%  20%
1680x1050, 60 Hz, Pixel Clock：148.5MHZ,all white
Set to "User" mode
Set to The value under user mode, which allows that the
brightest two of 32 linear distributed gray-scales (0～ 700mv)
can be distinguished.
6500°K
The value under user mode
700 mVss
Factory preset value,
90 ° H and V
40 cm for LCD performance, 20 cm for LCD failures
Dark room (< 1 cd/m
LED Drive.
Main Board
Key Board
2
)
Flat Panel and
LED backlight
HOST Computer
RS232 Connector
For white balance
adjustment in factory
mode
Video signal, DDC