Page 1
13 Circuit Descriptions
13-1
13 Circuit Descriptions
13-1 Block description
Bordeaux consists of three main blocks
1. Main board : Video signal processing
2. IP board : Power supply & Inverter
3. T-con board : LCD Panel control
IP Board
RF In (Air, Cable)
Scart 1,2
A/V
S-Video
Component
DVI-D
PC
Main
Board
Panel
T-con
Board
Speaker
IR/LED
Signal
Power
Page 2
13 Circuit Descriptions
13-2
Bordeaux consists of three main blocks
1. Main board : Video signal processing
2. SMPS : Power supply
3. T-con board : LCD Panel control
SMPS
INVERTER
RF In (Air, Cable)
Scart 1,2
A/V
S-Video
Component
DVI-D
Main
Board
Panel
T-con
Board
Speaker
IR/LED
Signal
Power
PC
Page 3
13 Circuit Descriptions
13-3
13-2 SMPS Board
13-2-1 32" Power Block
13-2-2 32" SMPS Diagram
Line
Filter
Part
PFC
Switching
Part
Resonance
Switching
Part
Resonance
Transformer
Output
Rectifier
Part
DC/DC
MC33167
Inverter
SMPS
24V
Signal
5.4V
Signal
13V
Sound
9V or 12V
Stand-By
6V
Regulator
Resonance
Controller
F9222L
PFC
Controler
TDA4863
Stand-By
Controller
Viper22A
AC Input
(90Vac~264Vac)
AC
Rectifier
PFC
Rectifier
On/Off
Control
On/Off
EMI
FILTER
AC Input
90V~264V
INPUT
Rectifier
F9222L
Viper22A
Current
Resonant Type
450V
120uF
TDA4863
PFC DC
Output
ER3942
Trans EE2020
PFC
Regulator
Sound
+9V / +12V
V5D
+5.4V
Stand-By
6V
INVERTER
24V
Main
+13V
DC/DC
Converter
On/Off
Control
Power On/Off
Signal
Page 4
13 Circuit Descriptions
13-4
13-2-3 BN96-03057A
13-2-4 BN96-03832A
Output
Name
Output Voltage Output Current
Load Characteristics PCB Loc.
Usage Remark
Normal
24.5V
5.4V
12.7V
9.2V
8.0V
0.1V
0.1V
0.01V
0.01V
0.1V
4.0V
5.0V
0.5V
1.1V
0.6V
Pulsating Main B'D Drive -
-
-
-
-
Sound
Stand-by
Drive, Logic,
Buffer,
Image Digital
Image Analog
Main B'D
Main B'D
Main B'D
Main B'D
Constant
Constant
Constant
Constant
3.0V
3.0V
0.3V
0.3V
0.3V
23.52V
~25.48V
5.13V
~5.67V
11.9V
~13.7V
8.83V
~9.57V
5.58V
~8.5V
4
5
7
4
5
Min Typical PeakRegulation(%) Variable Range
24V
13V
Vamp
ST-BY
5.4V
Output
Name
Output Voltage Output Current
Load Characteristics PCB Loc.
Usage Remark
Normal
24.5V
5.4V
12.7V
9.2V
6.0V
0.0V
0.0V
0.0V
0.0V
0.0V
8.0V
5.0V
0.5V
3.0V
0.6V
Pulsating Main B'D Drive -
-
-
-
-
Sound
Stand-by
Drive, Logic,
Buffer,
Image Digital
Image Analog
Main B'D
Main B'D
Main B'D
Main B'D
Constant
Constant
Constant
Constant
5.0V
4.0V
0.3V
0.5V
0.3V
23.52V
~25.48V
5.13V
~5.67V
11.9V
~13.7V
11.52V
~12.5V
5.70V
~6.30V
4
5
7
4
5
Min Typical PeakRegulation(%) Variable Range
24V
13V
Vamp
ST-BY
5.4V
Page 5
13 Circuit Descriptions
13-5
13-2-5 32" IP Board
Power
Input
(AC90V
~264V)
Power
Input
(380V)
2
nd
Resonant
Balance
Board
Voltage /
Current /
LAMP /
Detection
LAMP
LAMP
EMI Filter
Rectifier
Rectifier
Feedback
Protection
Feedback
Protection
Feedback
Protection
FWM
CONTROLLER
Stand-by
CONTROLLER
(Switch)
FWM
CONTROLLER
VCC
On/Off
Opto-
coupler
13.0V / 0.4A
12.0V / 2.5A
5.4V / 43.5A
6.2V / 0.4A
Rectifier
Rectifier
Rectifier
SWITCHING
TRANSFORMER
SWITCHING
Feedback
CONTROLLER
Opto-Coupler
UVLO
Gate
DRIVE
Opto-Coupler /
Pulse-
Transformer
ON/OFF
DIM
TRANSFORMER
TRANSFORMER
RFC
(switching,
Inductor)
Page 6
Memo
13 Circuit Descriptions
13-6
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