Samsung LN23R71BAX Service Manual page 154

13-3-5 32" , 40" IP Board
EMI Filter
Power
Input
(AC90V
Rectifier
~264V)
VCC
On/Off
13-3-6 32" , 40" IP Board
Power
Input
(380V)
Gate
UVLO
DRIVE
Opto-Coupler
ON/OFF
DIM
RFC
(switching,
Inductor)
Feedback
Protection
FWM
CONTROLLER CONTROLLER
CONTROLLER
SWITCHING TRANSFORMER
Opto-Coupler /
Pulse-
Transformer
CONTROLLER
SWITCHING TRANSFORMER
FWM
Opto-
coupler
TRANSFORMER
Stand-by
(Switch)
2 nd
Resonant
Feedback
13 Circuit Descriptions
Rectifier
13.0V / 0.4A
Rectifier
12.0V / 2.5A
Rectifier
5.4V / 43.5A
Feedback
Protection
Rectifier
6.2V / 0.4A
Feedback
Protection
Balance
LAMP
Board
LAMP
Voltage /
Current /
LAMP /
Detection
13-7