Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung LCD TV LE23R88BDX SAMSUNG LE37R88BD LE37R88BD Circuit Description
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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 23" Power Block
Line PFC Inverter
Resonance
Filter AC Switching PFC Resonance SMPS
Switching
Part Rectifier Part Rectifier Transformer Output 24V
Part
Rectifier
Part Signal
DC/DC
MC33167 5.3V
AC Input PFC Resonance
(90Vac~264Vac) Controler Controller
Signal
TDA4863 MC33067
13V
Regulator Sound
On/Off KA78R09 12V
Control
On/Off
Stand-By
Controller Output
ST-BY Stand-By
VIPer12A Rectifier
Transformer 5.2V
Part
13-3-2 23" SMPS Diagram
PFC PFC DC Current
Rectifier Output Resonant Type Trans EER3944
EMI INVERTER
FILTER 24V
INPUT
450V
AC Input 150uF
90V~264V TDA4863 Main
+13V
F222L Regulator
Sound
+9V
Trans EE2020
DC/DC V5D
Converter +5.3V
VIPer12A
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
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