Samsung 920NW Service Manual - Page 57
IP BOARD partInverter Part, Control IC IC501
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UPC - 729507800905
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13 Circuit Descriptions 13-3 IP BOARD part(Inverter Part) Vin voltage (+14.2V) Brightness control signal ON/OFF DC to DC (+14.2V to 5.0V) CCFL PWM Control IC IC501 MosFET U501 MosFET U502 Transformer T501 Transformer T502 Voltage feedback Current feedback CCFL1 CCFL2 CCFL1 CCFL2 13-4
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13 Circuit Descriptions
13-4
13-3 IP BOARD part(Inverter Part)
Vin voltage
(+14.2V)
Brightness
control signal
CCFL PWM
Control IC IC501
DC to DC
(+14.2V to 5.0V)
MosFET
U501
Transformer
T501
CCFL1
CCFL1
CCFL2
CCFL2
Transformer
T502
Voltage
feedback
Current
feedback
MosFET
U502
ON/OFF