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13 Circuit Descriptions



13 Circuit Descriptions
13-1 Block description


Signal
Power
IP Board



RF IN

Scart 1,2

A/V

S-Video Main
Board Panel
Component T-con
Board
HDMI 1, 2

PC



Speaker



IR/LED

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




13-1
13 Circuit Descriptions




Signal
Power SMPS INVERTER



RF IN

Scart 1,2

A/V

S-Video Main
Board Panel
Component T-con
Board
HDMI 1, 2

PC



Speaker



IR/LED


Bordeaux consists of three main blocks

1. Main board : Video signal processing
2. SMPS : Power supply
3. T-con board : LCD Panel control




13-2
13 Circuit Descriptions

13-2 Main Block




13-3
13 Circuit Descriptions

13-3 SMPS Board
13-3-1 26", 32" Power Block




Line PFC Inverter
Resonance
Filter AC Switching PFC Resonance SMPS
Switching
Part Rectifier Part Rectifier Transformer Output 24V
Part
Rectifier
Part DC/DC Signal
SI-8008HFE 5.3V
AC Input PFC Resonance or AP1501A
(90Vac~264Vac) Controler Controller
Signal
TDA4863 MC33067
13V



Regulator Sound
On/Off KA278R12 12V
Control


On/Off
Stand-By
Controller Output
ST-BY Stand-By
STR-A6159 Rectifier
Transformer 5.2V
Part




13-3-2 26", 32" SMPS Diagram



PFC PFC DC Current
Rectifier Output Resonant Type Trans EER4445
EMI INVERTER
FILTER 24V
INPUT
450V
AC Input 150uF
90V~264V TDA4863 Main
+13V

MC33067 Regulator

Sound
+12V
Trans EE2020
DC/DC V5D
Converter +5.3V
STR-A6159
Stand-By
5.2V



On/Off Power On/Off
Control Signal




13-4
13 Circuit Descriptions




Output Voltage Output Current
Output
Load Characteristics PCB Loc. Usage Remark
Name
Normal Regulation(%) Variable Range Min Typical Peak


24V 24.5V 4 23.52V 0.1V 3.0V 4.0V Pulsating Main B'D Drive -
~25.48V

Drive, Logic,
5.13V Main B'D -
5.3V 5.3V 5 0.1V 3.0V 5.0V Constant Buffer,
~5.67V
Image Digital


12.7V 7 11.9V 0.01V 0.3V 0.5V Constant Image Analog -
13V Main B'D
~13.7V

4 8.83V Sound -
Vamp 9.2V 0.01V 0.3V 1.1V Constant Main B'D
~9.57V

5.58V
ST-BY 8.0V 5 ~8.5V 0.1V 0.3V 0.6V Constant Main B'D Stand-by -




13-5
13 Circuit Descriptions



13-3-5 37" Power Block




Line PFC Inverter
Resonance
Filter AC Switching PFC Resonance SMPS
Switching
Part Rectifier Part Rectifier Transformer Output 24V
Part
Rectifier
Part DC/DC Signal
MC33167 5.3V
AC Input PFC Resonance
(90Vac~264Vac) Controler Controller DC/DC Signal
TDA4863 F9222L LM2576 13V


Regulator Sound
On/Off KA278R12 12V
Control


On/Off
Stand-By
Controller Output
ST-BY Stand-By
Viper22A Rectifier
Transformer 5.2V
Part




13-3-6 37" SMPS Diagram



PFC PFC DC Current
Rectifier Output Resonant Type Trans EER4445
EMI INVERTER
FILTER 24V
INPUT
450V
AC Input 150uF
90V~264V TDA4863 DC/DC Main
Converter +13V

F9222L Regulator

Sound
+12V / +9V
Trans EE2020

DC/DC V5D
Converter +5.3V
Viper22A
Stand-By
5.2V



On/Off Power On/Off
Control Signal




13-6
13 Circuit Descriptions



13-3-7 40, 46" IP Board




Power EMI Filter RFC SWITCHING TRANSFORMER
Input (switching,
(AC90V Inductor) Rectifier 13.0V / 0.4A
~264V) Rectifier
Rectifier 12.0V / 2.5A

Rectifier 5.4V / 43.5A
Feedback
Protection


FWM FWM Opto- Feedback
CONTROLLER CONTROLLER coupler Protection


VCC
On/Off TRANSFORMER
Stand-by Rectifier 6.2V / 0.4A
CONTROLLER
(Switch)

Feedback
Protection




13-3-8 40, 46" IP Board




SWITCHING TRANSFORMER
2nd
Power
Balance
Input LAMP
Resonant Board
(380V)




UVLO Gate
DRIVE

Opto-Coupler / LAMP
Opto-Coupler Pulse-
Transformer
Voltage /
Current /
LAMP /
CONTROLLER Detection


ON/OFF

DIM Feedback




13-7
13 Circuit Descriptions

Memo




13-8