Output Power Requirement; Power Management; Specification Of Inverter - BenQ Q7C3 Service Manual

Q7C3 LCD Monitor Service Guide
70% minimum (measuring at 115Vac and full load)
Power saving mode ＜ 1 Watts at 115vac

3.5.2 Output Power Requirement

The power circuit shall supply DC power outputs as followings:
Output Nominal
1 5V-panel
2 3.3V-Fix

3.5.3 Power Management

Mode H/Vsync
Normal Both exist
Normal Both exist
None or
off
Only one exist

3.6 Specification of Inverter

The backlight system is an edge-lighting type with 4 CCFLs (Cold Cathode Fluorescent Tube).
The characters of dual lamps are shown in the following tables.
ITEM
Lamp Voltage
Lamp Current
Inverter Frequency
Starting lamp voltage
Lamp life time
NOTE: 1.All condition are at 25C ambient unless otherwise specified.
2. Load Panel=SXGA 17"
Regulation
±10%
±5%
Power consumption
< 50W (with audio)
< 40W (without audio)
, under 115Vac
< 1W
2W, under 264Vac
<
SYMBOL MIN
VL --
IL 13
FL 40
1700
VS
1200
LT 30,000
Engineering Specification
Load Current Range
0 ~ 1.0A
0 ~ 1.0A
LED Color
(Status)
Blue
(Normal)
Blue
(Normal)
Amber
TYP MAX
700 860
14 15
50 80
-- --
-- --
40,000 --
Recovery
Time
--
--
< 3 sec
Unit Condition
V IL=7.0 mA
mA Each connector
kHz
V
Tb=0
V Ta=25
I = 7.0±0.5mA
L
Continuous
Hr
Operation
Ta=25±5
o
C
o
C
o
C
13