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LG 50PC51 User Manual

LG 50PC51
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BLOCK DIAGRAM
SIDE_Y/C
PC_Audio
RF
PC_Audio_L/R
TUNER
TV_V
S I F
AV_RCA
MNT_OUT MNT_OUT
COMP1
COMP2
COMP_Y/Pb/Pr
TDA3107D2
Amp
Tx0/1/2/3/4/C
12V Panel /DISP_EN
R_SPK_OUT
#1 RX 0/1/2/CLK
DDC_SCL/SDA1/2
HDMI
(PC/DTV)
SCART1
SCART2
SCART
RGBRGB
COMP1_Y/Pb/Pr
TV_OUT TV_OUT
SCART1,2_R/L R/L_Audio
(Analog_out)
RGB
(PC/DTV)
PC_RGB
A V S-A V
SIDE_V
PC_SCL/SDA
I2 C
L_SPK_OUT
RT-OPTION
RGB_HS/VS
HDMI_HS/VS
30P_LVDS
HEAD_OUT
L/R HEAD_OUTHEAD_OUT
L/R
COMP2_R/L
HS/VS
PIP OPTION
ANX9021ANX9021
(TMDS RECIEVER)(TMDS RECIEVER)
TEA6420
Sound switch
#2 RX 0/1/2/CLK
SIDE_R/L
SCART1,2_V (RCA1,2_V)
EEPROMEEPROM
SUB-TUNER
VIDEO_DECODER
TW9909TW9909
EEPROMEEPROM
VCT-Pro
(Lip-sync)
SCART_FB
AV_AUDIO R/L
AM_AUDIO
COMP1_R/L
I2 C
RX 0/1/2/CLK
TV_OUTTV_OUT
MNT_OUTMNT_OUT
PIP_V
ITU-656_IN
SCART1,2_I D
HDMI_Y/Pb/Pr(1080P
)
SCART_RGB
STMAV335
(MUX)
RT- OPTION
COMP1_R/L
RCA1,2_V(OPTION)
COMP2_Y/Pb/Pr
(OPTION)
COMP2_R/L
MC74HC4066MC74HC4066
DOWNLOAD_SW
I2 C
I2 C
I2 C
COMP1_Y/Pb/PrCOMP1_Y/Pb/Pr
COMP2_Y/Pb/PrCOMP2_Y/Pb/Pr
(OPTION)(OPTION)
74ACT25374ACT253
(MUX)(MUX)
TV_SUBTV_SUB
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LG 50PC51 Specifications

General IconGeneral
3DNo
Depth88 mm
Height827.2 mm
EqualizerYes
Pixel pitch- mm
Product colorBlack
RMS rated power- W
Display diagonal50 \
Depth (with stand)370 mm
Display brightness1500 cd/m²
Display resolution1366 x 768 pixels
Display technologyPlasma
Power requirements100-240V, 50/60Hz
Width (with stand)1242 mm
Height (with stand)887.6 mm
Weight (with stand)39300 g
SCART ports quantity1
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Contrast ratio (typical)-
Equalizer bands quantity5
Digital vertical frequency100 Hz
Display viewable area (HxV)1106 x 622 mm
Power consumption (standby)1 W
Power consumption (typical)450 W

Summary

Safety Precautions

Important Safety Notice

Critical safety characteristics and replacement guidelines to prevent hazards.

General Servicing Guidance

Essential advice on using isolation transformers and handling components.

Leakage Current Checks

Procedures for performing hot and cold leakage current tests.

Specifications

Application Range and General Specifications

Defines the applicable models and general technical parameters of the TV.

Test Methodologies and Conditions

Details environmental conditions and test procedures for product evaluation.

Module Specifications

Comprehensive technical details for PDP50X4 and other module specifications.

Adjustment Instructions

Application Scope and Pre-Adjustment Notes

Defines the scope of adjustments and provides critical notes before starting.

Adjustment Itemization and Procedures

Lists specific adjustments and methods for PCB/SET assemblies.

Software and Channel Memory Download

Procedures for downloading software and channel memory data.

Configuration and Calibration

Tool Option and Color Carrier Adjustment

Guide to changing tool/area options and adjusting color carrier deviation.

Power PCB Voltage Adjustments

Procedure for adjusting Va and Vs voltages on the Power PCB.

EDID/DDC Download

Requirements and sequence for EDID/DDC download.

White Balance Adjustment

Manual and automatic procedures for adjusting white balance.

Shipping Option Data and Default Values

Inputting shipping options and understanding default adjustment values.

Testing Specifications

Details internal press test parameters and sound output specifications.

Troubleshooting Guide

Power and Protection Issues

Diagnosing and resolving no power and protect mode faults.

Display and Image Problems

Troubleshooting no raster, unusual RF, AV, SCART, and RGB displays.

Audio and HDMI Issues

Diagnosing and resolving no sound and HDMI mode problems.

System Diagrams and Views

Block Diagram Overview

Visual representation of the TV's internal components and their interconnections.

Exploded View and Parts List

Diagram showing physical parts breakdown and a detailed parts list.

Replacement Parts List

Capacitor, Diode, and IC Replacements

Lists of replacement capacitors, diodes, and ICs with part numbers.

Transistor, FET, and Resistor Replacements

Lists of replacement transistors, FETs, and resistors with part numbers.

Harnesses, Jacks, Switches, and Others

Lists of replacement harnesses, jacks, switches, and miscellaneous parts.

Schematic Diagrams

Input, Tuner, and Power Schematics

Circuit diagrams for inputs, tuner, and power sections.

Audio, Decoder, and VCTP Scaler Schematics

Circuit diagrams for audio, video decoder, and VCTP scaler.

Printed Circuit Board Layouts

Main and Control Board Layouts

Diagrams showing the physical layout of main and control boards.

Side AV and Inlet Connection Layouts

Layouts for side AV connections and the main inlet.

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