Acer B223W Service Manual page 28

d. Display Position
D(1, 1)
D(1, 2)
. .
.
D(1, 525)
. .
.
D(1, 1049)
D(1, 1050)
e. Backlight driving conditions
Parameter
Lamp voltage
Lamp operation current
Lamp starting voltage
Frequency
Lamp life time
Note: The waveform of the voltage output of inverter must be area-symmetric and the design of the
inverter must have specifications for the modularized lamp. The performance of the Backlight,
such as lifetime or brightness, is greatly influenced by the characteristics of the DC-AC inverter
for the lamp. All the parameters of an inverter should be carefully designed to avoid producing too
much current leakage from high voltage output of the inverter. When designing or ordering the
inverter please make sure that a poor lighting caused by the mismatch of the Backlight and the
inverter (miss-lighting, flicker, etc.) never occurs. If the above situation is confirmed, the module
should be operated in the same manners when it is installed in your instrument.
Note 1 :
The degree of unbalance: less than 10%
The ratio of wave height: less than
The degree of unbalance = |
The ratio of wave height =
Lamp should be completely turned on.
ALL RIGHTS RESERVED ANY PORTION OF THIS DOCUMENT SHALL NOT BE REPRODUCED, COPIED, OR TRANSFORMED
TO ANY OTHER FORMS WITHOUT PRIOR WRITTEN PERMISSION FROM INNOLUX DISPLAY CORPORATION.
D(2, 1) ......
D(2, 2) ......
......
D(2, 525) ......
......
D(2, 1049) ......
D(2,1050) ......
Symbol
VL 758(8mA) 794(7mA) 955(3mA)
IL
VLstart
F
40000
2 ±
I I
- | /Irms*100(%)
p -p
I I
(or )/Irms
p -p
SPEC NO.
PAG E
D(840, 1) ......
D(840, 2) ......
. .
......
.
D(840, 525) ......
. .
......
.
D(840, 1049) ......
D(840, 1050) ......
Min. Typ. Max.
3 7
1250
1570
40 55
10%
I : high side peak
I
p
p
I
I : low side peak
-p -p
M T 2 2 0W W 0 1 V. 0
D(1679, 1) D(1680, 1)
D(1679, 2) D(1680, 2)
. .
.
D(1679, 525) D(1680, 525)
. .
.
D(1679, 1049) D(1680, 1049)
D(1679,1050) D(1680, 1050)
Unit Remark
Vrms
8 mArms
T = 25 ±D! Note 2,3,4,5 !
Vrms
T = 0 ±D Note 2,3,4,5
80 KHZ
Hr
13/23
. .
.
. .
.
Remark
Note 1
Note 5
Note 6