Akai LCT3785TAJ, Руководство по обслуживанию

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3-3 BACKLIGHT INVERTER UNIT
ITEM
SYMBOL
MIN TYP MAX UNIT REMARK
Lamp voltage VL -- 1400 -- Vrms IL=5.0mA
Lamp current IL 4.5 5 5.5 mArms *1)
Lamp life time LT 50000 -- -- hr *2)
Input voltage of inverter VBL 21.6 24 26.4 V *3)
IIN0 -- (5.7) -- *4)
Input current of inverter
IIN -- (5.4) --
A
*5)
Lamp frequency FL 61.5 63.5 65.5 KHz *6)
Inverter dimming voltage VDIM 0 -- 5 Vdc *7)
Inverter duty ratio D 20 -- 100 % VDIM=5V(MAX.)
Inverter opening voltage Vopen 2300 -- 2700 Vrms
ON 2.0 -- 5
Backlight on /off
control voltage
OFF
V
BLON
0 -- 0.8
V
BLW0 -- (140) -- *4)
Power consumption
BLW -- (130) --
W
*5)
[Note 1] Lamp Current measurement method:
(The current meter is connected to low voltage end)
Take
the average of 16 CCFLs’ lamp current as V
DIM
= 5V after power on for 30 minutes.
Inverter
1
2
1
2
1
2
1
2
1
2
1
2
1
2
HV(Blue)
HV(Blue)
HV(Blue)
HV(Blue)
HV(Blue)
HV(Blue)
HV(Blue)
HV(White)
HV(White)
HV(White)
HV(White)
HV(White)
HV(White)
HV(White)
LCD MODULE
A
A
A
A
A
A
A
A
A
A
A
A
A
A
1
2
HV(Blue)
HV(White)
A
A
[Note2] Definition of the lamp life time:
When lamp luminance redue to 50% or lower than its initial value.
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