Q74A Service Manual
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INVERTER & POWER
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Inverter & POWER(Q74A)
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L.I.P.S : LCD INVERTER POWER SYSTEM(FLF1742-20A)
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Specification
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Operate 4 CCFL Lamps.
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Current Feedback Control
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Input Voltage : DC 12V.
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When any lamp doesn’t operate, the panel is under protection status.
Protection status means that circuit protect the other lamp.
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PWM Control.
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Remote Power On/Off control
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High Efficiency
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Electrical Characteristics
Description
Min
Typ
Max
Sign
Remark
Input Voltage
11.0
12.0
13.0
Vin
Input Current
1.5
1.7
1.9
A
12Vdc
Output Current
5.0
6.0
7.0
mArms
1ccfl current
Lamp Frequency
40
47
55
kHz
Normal Operation
ON
Vin=12V
ON/OFF=5V
ON/OFF Control
Shunt-down(Lamp off)
OFF
Vin=12V
ON/OFF=0V
Kick-Off
Voltage
MORE THAN 1100
Vrms
Kick-Off
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Summary of Contents for Q74A
Page 1: ...Q74A Service Manual All manuals and user guides at all guides com a l l g u i d e s c o m...
Page 18: ...Q74A Service Manual EXPLODE VIEW Q74A 18 All manuals and user guides at all guides com...
Page 27: ...Q74A Service Manual 27 Q74A Service Manual 27 All manuals and user guides at all guides com...
Page 33: ...Q74A Service Manual Inverter Circuit 33 All manuals and user guides at all guides com...
Page 35: ...Q74A Service Manual AD B D TOP PATTERN Q74A 35 All manuals and user guides at all guides com...
Page 37: ...Q74A Service Manual AD B D MASK TOP Q74A 37 All manuals and user guides at all guides com...
Page 38: ...Q74A Service Manual AD B D MASK BOTTOM Q74A 38 All manuals and user guides at all guides com...
