Dell SP2009W Service Manual - Page 28
Inverter and Power Board
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20" LCD Color Monitor 5.2.2 Inverter and Power Board AC input EMI Bridge Rectifier Transformer Dell SP2009Wc Rectifier diodes Lamp Start Circuit R932, R904, R933 PWM Control IC Over Voltage Feedback Circuit Rectify and Output DC Convert Circuit MOSFET CN902 5V 12V ON/OFF Feedback Circuit Over Voltage Protect PWM Control IC ON/OFF Control DIM 28
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20" LCD Color Monitor
Dell SP2009Wc
28
5.2.2 Inverter and Power Board
EMI
Bridge
Rectifier
Start Circuit
R932, R904, R933
PWM
Control
IC
Over
Voltage
AC input
12V
PWM
Control IC
Feedback
Circuit
Rectify and
Output
DC Convert
Circuit
MOSFET
Over
Voltage
Protect
Lamp
ON/OFF
ON/OFF
Control
Rectifier
diodes
Feedback
Circuit
Transformer
DIM
5V
CN902