BenQ Q7T3-FP737S, Service Manual

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Q7T3-FP737S-Dual function LCD Monitor Service
Engineering Specification
14
Confidential
3.5.2 Output Power Requirement
The power circuit shall supply DC power outputs as followings:
Output
Nominal Regulation Load Current Range
1 5V-panel ±10% 0 ~ 1.0A
2 3.3V-Fix ±5% 0 ~ 1.0A
3.5.3 Power Management
Mode H/Vsync Power consumption
LED Color
(Status)
Recovery
Time
Normal Both exist < 40W
Blue
(Normal)
--
off
None or
Only one exist
< 1W
, under 115Vac
<
2W, under 264Vac
Amber < 3 sec
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 SYMBOL MIN TYP MAX Unit Condition
Lamp Voltage
VL -- 650 -- V
IL=6.5 mA
Lamp Current
IL
2.5 6.5 7 mA Each Lamp
Inverter Frequency
FL 40 60 70 kHz
1250 -- -- V
Tb=0
o
C
Starting lamp voltage
VS
1000
--
--
V
Ta=25
o
C
Lamp life time LT 50,000 -- -- Hr Ta=25
±
2
o
C
NOTE: 1.All condition are at 25C ambient unless otherwise specified.
2. Load Panel=SXGA 17”