LG 47LD500 User manual

MODEL :47LD500_LC470WUH-SCR7
P/NO：SG-0362 (REV00) Printed in Taiwan

47LD500 Service Manual
Table of Contents
CONTENTS PAGE
Sections
1. Features 1-1
2. Specifications 2-1
3. On Screen Display 3-1
4. Factory Preset Timings 4-1
5. Pin Assignment 5-1
6. Main Board I/O Connections 6-1
7. Theory of Circuit Operation 7-1
8. Waveforms 8-1
9. Trouble Shooting 9-1
10. Block Diagram 10-1
11. Spare parts list 11-1
12. Complete Parts List 12-1
13. EDID List 13-1
Appendix
1. Main Board Circuit Diagram
2. Main Board PCB Layout
3. Assembly Explosion Drawing

CONFIDENTIAL – DO NOT COPY Page 1-1
File No. SG-0362
Chapter 1 Features
1. Built in TV channel selector for TV viewing.
2. Simultaneous display of PC and TV images.
3. Connectable to PC’s analog RGB port.
4. Built in HDTV, composite video, HDMI, ATV and DTV, Audio line out,Audio
optical out.
5. Built in auto adjust function for automatic adjustment of screen display.
6. High quality 1920X1080 pixel by pixel display.
7. Smoothing function enables display of smooth texts and graphics even if
image with resolution lower than 1920X1080 is magnified.
8. Advanced video functions for personal favor.
9. Picture In Picture (PIP) function to show TV or VCR images.
10. Power saving to reduce consumption power too less than 1W.
11. On Screen Display: user can define display mode (i.e. color, brightness,
contrast, sharpness, backlight), sound setting, PIP, TV channel program,
aspect and gamma or reset all setting.

CONFIDENTIAL – DO NOT COPY Page 2-1
File No. SG-0362
Chapter 2 Specification
1. TFT-LCD CHARACTERISTICS
Model Name: LGD LC470WUH-SCR7 (Vendor: LG. Philips LCD Co., Ltd)
Item Specification
Active Screen Size 46.96 inches(1192.87mm) diagonal
Outline Dimension 1096.0(H) x 640.0 (V) x 35.5 mm(D) (Typ.)
Pixel Pitch 0.5415 mm x 0.5415 mm
Pixel Format 1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement
Color Depth 8-bit, 16.7 M colors (※1.06B colors @ 10 bit (D) System
Output)
Drive IC Data Interface
Source D-IC 8-bit mini-LVDS, gamma reference voltage, and control signals
Gate D-IC Gate In Panel
Luminance, White 500 cd/m2 (Center 1point,Typ.)
Viewing Angle (CR>10) Viewing angle free ( R/L 178 (Min.), U/D 178 (Min.))
Power Consumption Total 240 W (Typ.) (Logic=9.0(TBD)W with T-CON,
Backlight=195W @ with Inverter I out duty 100%)
Weight 12Kg (Max.)
Display Mode Transmissive mode, Normally black
Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer
(Haze 10%)
2. Input Connectors
1x Co-axial RF (ATSC/QAM/NTSC)
3x HDMI™** with HDCP (1 with Stereo Audio RCA)
1x Component YPbPr plus Stereo Audio
1x RGB PC plus Stereo Audio
1x Composite Video
Service port (USB)
Multi Media (USB) (shared with Service port)
3. Output Connectors
SPDIF Out (Optical Audio) , RCA (Audio OUT)

CONFIDENTIAL – DO NOT COPY Page 2-2
File No. SG-0362
4. POWER SUPPLY
Input Voltage Level: 100~240 Vac, 50/ 60 Hz
Power Consumption: 239W MAX
Power OFF: to less than 1W MAX (at 120 Vac)
5. SPEAKER
Built in Speakers:6Ω/10W (max) X 2 way.
6. ENVIRONMENT
Operating Temperature: 5℃~35℃(Ambient)
Operating Humidity: Ta= 35℃, 90%RH(Non-condensing)
Operating Altitude: 0 - 14,000 ft
Non-Operating: 4000 ft
7. DIMENSIONS (Physical dimension)
(Unit:mm)
Display Module Display Module + Base
a. Height 759.81 698.83
b. Width 1136.63 1136.63
c. Depth 245.78 88.1
8. Weight
a. Net: 18.2 ±1.0 kg (without base)
15.9 ±1.0 kg (with base)
b. Gross: 24.6 ±1.0 kg

CONFIDENTIAL – DO NOT COPY Page 2-3
File No. SG-0362
9. Precautions
Please pay attention to the followings when you use this TFT LCD module.
9-1. Mounting Precautions
(1) You must mount a module using holes arranged in four cornersor four
sides.
(2) You should consider the mounting structure so that uneven force (ex.
Twisted stress) is not applied to the module. And the case on which a
module is mounted should have sufficient strength so that external force is
not transmitted directly to the module.
(3) Please attach the surface transparent protective plate to the surface in
order to protect the polarizer. Transparent protective plate should have
sufficient strength in order to the resist external force.
(4) You should adopt radiation structure to satisfy the temperature
specification.
(5) Acetic acid type and chlorine type materials for the cover case are not
desirable because the former generates corrosive gas of attacking the
polarizer at high temperature and the latter causes circuit break by
electro-chemical reaction.
(6) Do not touch, push or rub the exposed polarizers with glass, tweezers or
anything harder than HB pencil lead. And please do not rub with dust
clothes with chemical treatment. Do not touch the surface of polarizer for
bare hand or greasy cloth.(Some cosmetics are detrimental to the
polarizer.)
(7) When the surface becomes dusty, please wipe gently with absorbent
cotton or other soft materials like chamois soaks with petroleum benzine.
Normal-hexane is recommended for cleaning the adhesives used to attach
front / rear polarizers. Do not use acetone, toluene and alcohol because
they cause chemical damage to the polarizer.
(8) Wipe off saliva or water drops as soon as possible. Their long time contact
with polarizer causes deformations and color fading.
(9) Do not open the case because inside circuits do not have sufficient
strength.

CONFIDENTIAL – DO NOT COPY Page 2-4
File No. SG-0362
9-2. Operating Precautions
(1) The spike noise causes the mis-operation of circuits. It should be lower
than following voltage:
V=±200mV (Over and under shoot voltage)
(2) Response time depends on the temperature. (In lower temperature, it
becomes longer.)
(3) Brightness depends on the temperature. (In lower temperature, it becomes
lower.) And in lower temperature, response time(required time that
brightness is stable after turned on) becomes longer.
(4) Be careful for condensation at sudden temperature change. Condensation
makes damage to polarizer or electrical contacted parts. And after fading
condensation, smearor spot will occur.
(5) When fixed patterns are displayed for a long time, remnant image is likely
to occur.
(6) Module has high frequency circuits. Sufficient suppression to the
electromagnetic interference shall be done by system manufacturers.
Grounding and shielding methods may be important to minimized the
interference.
(7) Please do not give any mechanical and/or acoustical impact to LCM.
Otherwise, LCM can’t be operated its full characteristics perfectly.
(8) A screw which is fastened up the steels should be a machine screw. (if not,
it causes metallic foreign material and deal LCM afatal blow)
(9) Please do not set LCD on its edge.
9-3. Electrostatic Discharge Control
Since a module is composed of electronic circuits, it is not strong to
electrostatic discharge. Make certain that treatment persons are connected to
ground through wrist band etc. And don’t touch interface pin directly.
9-4. Precautions for Strong Light Exposure
Strong light exposure causes degradation of polarizer and color filter.
9-5. Storage
When storing modules as spares for a long time, the following precautions are
necessary.

CONFIDENTIAL – DO NOT COPY Page 2-5
File No. SG-0362
(1) Store them in a dark place. Do not expose the module to sunlight or
fluorescent light. Keep the temperature between 5°C and 35°C at normal
humidity.
(2) The polarizer surface should not come in contact with any other object. It is
recommended that they be stored in the container in which they were
shipped.
9-6. Handling Precautions for Protection Film
(1) The protection film is attached to the bezel with a small masking tape.
When the protection film is peeled off, static electricity is generated
between the film and polarizer. This should be peeled off slowly and
carefully by people who are electrically grounded and with well ion- blown
equipment or in such a condition, etc.
(2) When the module with protection film attached is stored for a long time,
sometimes there remains a very small amount of glue still on the bezel after
the protection film is peeled off.
(3) You can remove the glue easily. When the glue remains on thebezel
surface or its vestige is recognized, please wipe them off with absorbent
cotton waste or other soft material like chamois soaked with normal-
hexane.

CONFIDENTIAL – DO NOT COPY Page 3-1
File No. SG-0362
Chapter 3 On Screen Display
On Screen Display (OSD) is a friendly interface providing the function adjusting in our system.
Customers could operate it only by few buttons. There is the introduction of the OSD.
<Side>
A. LED indicator display on the front
LED indicator Status Remark
Off AC power off by disconnecting the power cord
Green Power on
Becoming dimmer after lighting up a few
seconds
Red Standby/Power Off Becoming dimmer after lighting up a few
seconds
B. Specification and explanation of user control panel on the side
Buttons 1 2 3 4 5 6 7
Name
i. Standby/power on
After AC on, by pressing button, LED indicator turns to white to indicate
power on. press 2 sec to turn off this device, press this button again.

CONFIDENTIAL – DO NOT COPY Page 3-2
File No. SG-0362
ii. Menu operation
Press button to activate the quick menu. Press the button again to
activate function. Turn Left or Right button to select function
On Screen Display
Operation:
Main unit button (1)
(2)
(3)
(4)
(5)
(6)
(7)
LGE 2008 UI Adjustment
Main Menu
Channel
Picture
Audio
Time
Option
Lock
Input
My Media

CONFIDENTIAL – DO NOT COPY Page 3-3
File No. SG-0362
Channel
A. Auto Tuning
B. Manual Tuning
a. Type: TV, CATV, DTV, CADTV
b. Channel
c. Add / Delete
d. Close
C. Channel Edit
a. Type: TV, CATV, DTV, CADTV
b. Channel Select
c. Add / Delete / Remove Favorite
Picture
A. Aspect Ratio (Set by Program, 4:3, 16:9, Zoom, Cinema
Zoom, Just Scan)
Source TV/AV/Comp/HDMI RGB
Resolution 480i/p
720p,
1080i/p 480i/p 720p, 1080i/p
Set by
Program Yes Yes N/A N/A
4:3 Yes Yes Yes Yes
16:9 Yes Yes Yes Yes
Zoom Yes Yes N/A N/A
Cinema Zoom Yes Yes N/A N/A
Just Scan N/A Yes N/A N/A
B. Energy Saving (Auto, Off, Minimum, Medium, Maximum,
Screen Off)
C. Picture Mode (Vivid, Standard, Cinema, Sport, Game)
a. Backlight (0 ~ 100)
b. Contrast (0 ~ 100)

CONFIDENTIAL – DO NOT COPY Page 3-4
File No. SG-0362
c. Brightness (0 ~ 100)
d. Sharpness (0 ~ 100)
e. Color (0 ~ 100)
f. Tint (R50 ~ G50)
g. Advanced Control
g-1.Color Temperature (Cool, Medium, Warm)
g-2.Fresh Contrast (Off, Low, Medium, High)
g-3.Fresh Color (Off, Low, High)
g-4.Noise Reduction (Off, Low, Medium, High)
g-5.Gamma (Low, Medium, High)
g-6.Black Level (Low, High)
g-7.Eye Care (Off, On)
g-8.Real Cinema (Off, On)
h. Reset
D. Screen (RGB-PC)
a. Resolution (1024X768, 1280X768, 1360X768)
b. Auto Config.
c. Position (H Position, V Position)
d. Size (-30 ~ 30)
e. Phase (-32 ~ 31)
f. Reset
Audio
A. Balance (L50 ~ R50)
B. Sound Mode (Standard, Music, Cinema, Sport, Game)
a. Treble (0 ~ 100)
b. Bass (0 ~ 100)
c. Reset
C. TV Speaker (On, Off)
D. DigitalAudio Out (Off, Dolby Digital, PCM)
E. Analog Audio Out (Fixed, Variable)

CONFIDENTIAL – DO NOT COPY Page 3-5
File No. SG-0362
Time
A. Clock (Auto, Manual)
a. Year (2000 ~ 2035)
b. Month (1 ~ 12)
c. Date (1 ~ 31)
d. Hour (12AM ~ 11PM)
e. Minute (0 ~ 59)
f. Time Zone (Eastern, Central, Mountain, Pacific,
Alaska, Hawaii)
g. Daylight Saving (Auto, On, Off)
B. Off Time
a. Repeat (Off, Once, Everyday, Mon~Fri, Mon~Sat,
Weekend, Sunday, )
b. Hour (12AM ~ 11PM)
c. Minute (0 ~ 59)
C. On Time
a. Repeat (Off, Once, Everyday, Mon~Fri, Mon~Sat,
Weekend, Sunday)
b. Hour (12AM ~ 11PM)
c. Minute (0 ~ 59)
d. Input (TV, AV, Component, RGB-PC, HDMI1, HDMI2,
HDMI3 (42LD500 only))
e. Channel
f. Volume (0 ~ 100)
D. Sleep Timer (Off, 10 min, 20 min, 30 min, 60 min, 90 min,
120 min, 180 min, 240 min)
E. Auto Sleep (Off, On)

CONFIDENTIAL – DO NOT COPY Page 3-6
File No. SG-0362
Option
A. Language
a. Menu (English, Spanish, French)
b. Audio (English, Spanish, French)
B. Input Label
a. AV (VCR, DVD, Set Top Box, Satellite, Cable Box,
Game, PC, HD-DVD, Blu-Ray)
b. Component (VCR, DVD, Set Top Box, Satellite, Cable
Box, Game, PC, HD-DVD, Blu-Ray)
c. RGB-PC (VCR, DVD, Set Top Box, Satellite, Cable
Box, Game, PC, HD-DVD, Blu-Ray)
d. HDMI1 (VCR, DVD, Set Top Box, Satellite, Cable
Box, Game, PC, HD-DVD, Blu-Ray)
e. HDMI2 (VCR, DVD, Set Top Box, Satellite, Cable
Box, Game, PC, HD-DVD, Blu-Ray)
f. HDMI3 (VCR, DVD, Set Top Box, Satellite, Cable
Box, Game, PC, HD-DVD, Blu-Ray) (47LD500 only)
C. Key Lock (Off, On)
D. Caption (Off, On)
a. Mode (CC1 ~ Text4, Service1 ~ Service6)
b. Digital Option (Set by Program, Custom)
b-1.Size (Small, Standard, Large)
b-2.Font (Font1 ~ Font8)
b-3.Text Color (White, Black, Red, Green, Blue,
Yellow, Magenta, Cyan)
b-4.Text Opacity (Solid, Flash, Translucent,
Transparent)
b-5.Bg Color (White, Black, Red, Green, Blue, Yellow,
Magenta, Cyan)
b-6.Bg Opacity (Solid, Flash, Translucent,
Transparent)
b-7.Edge Type (None, Uniform, Raised, Depressed,
Left Shadow, Right Shadow)
b-8.Edge Color (White, Black, Red, Green, Blue,
Yellow, Magenta, Cyan)
E. Initial Setting (In Store, Home)

CONFIDENTIAL – DO NOT COPY Page 3-7
File No. SG-0362
Lock
A. Lock System (Off, On) (default password: 0000)
B. Set Password
a. New
b. Confirm
C. Block Channel
a. Type: TV, CATV, DTV, CADTV
b. Channel Select
c. Block, Un-block
D. Movie Rating (Off, X, NC-17, R, PG-13, PG, G)
E. TV Rating-Children
a. Age (Off, TV-Y7, TV-Y)
b. Fantasy Violence (Off, TV-Y7)
F. TV Rating-General
a. Age (Off, TV-MA, TV-14, TV-PG, TV-G)
b. Dialogue (Off, TV-Y7)
c. Language (Off, TV-MA, TV-14, TV-PG)
d. Sex (Off, TV-MA, TV-14, TV-PG)
e. Violence (Off, TV-MA, TV-14, TV-PG)
G. Downloadable Rating
H. Input Block
a. AV (Off, On)
b. Component (Off, On)
c. RGB-PC (Off, On)
d. HDMI1 (Off, On)
e. HDMI2 (Off, On)
f. HDMI3 (Off, On) (47LD500 only)

CONFIDENTIAL – DO NOT COPY Page 3-8
File No. SG-0362
Input
TV
AV
Component
RGB-PC
HDMI-1
HDMI-2
HDMI-3 (47LD500 only)
My Media
A. Photo List
a. Slideshow Mode (Single, Sequence, Shuffle)
b. Repeat (Off, On)
c. Sort By (Photo Date, File Date, File A-Z)
d. Duration (5 ~ 32)
e. Slideshow Effect (Random, Dissolve, Wipe Right,
Wipe Left, Wipe Up, Wipe Down, Box In, Box Out)
f. Thumbnail Size (Small, Medium, Large)
B. Music List (47LD500 only)
a. Sort By (Title/File, Genre, Artist, Album)
b. Play Mode (Single, Sequence, Shuffle)
c. Repeat (Off, On)
d. Information (Off, On)

CONFIDENTIAL – DO NOT COPY Page 3-9
File No. SG-0362
QMenu
A. Aspect Ratio (Set By Program, 4:3, 16:9, Zoom, Cinema
Zoom, Just Scan)
B. Backlight (0 ~ 6)
C. Picture Mode (Vivid, Standard, Cinema, Sport, Game)
D. Sound Mode (Standard, Music, Cinema, Sport, Game)
E. Caption (Off, On)
F. Multi Audio (Mono, Stereo, SAP)
G. Sleep Timer (Off, 10 min, 20 min, 30 min, 60 min, 90 min,
120 min, 180 min, 240 min)
H. Del/Add/Fav (Add, Favorite, Delete)

CONFIDENTIAL – DO NOT COPY Page 4-1
File No. SG-0362
Chapter 4 Factory preset timings
This timing chart is already preset for the TFT LCD analog & digital display monitors.
PC analog preset modes
Mode
No. Resolution
Refresh
Rate
(Hz)
Horizontal
Frequency
(KHz)
Vertical
Frequency
(Hz)
Horizontal
Sync
Polarity
(TTL)
Vertical
Sync
Polarity
(TTL)
Pixel Rate
(MHz) Remark
1 640 x 480 60 31.469 59.941 N N 25.175 Windows
2 640 x 480 75 37.500 75.000 N N 31.500 Windows
3 800 x 600 60 37.879 60.317 P P 40.000 Windows
4 800 x 600 72 48.077 72.188 P P 50.000 Windows
5 800 x 600 75 46.875 75.000 P P 49.500 Windows
6 1024 x 768 60 48.363 60.004 N N 65.000 Windows
7 1024 x 768 70 56.476 70.069 N N 75.000 Windows
8 1024 x 768 75 60.023 75.029 P P 78.750 Windows
9 720 x 400 70 31.469 70.087 N P 28.322 DOS
10 ◎1920 x 1080 60 66.587 59.934 P N 138.50 Windows
◎
Remark: P: positive, N: negative, : primary mode Native Resolution
Resolution through RGB (15-Pin D connector)
Parameters Horizontal Values (Pixels) Vertical Values (Lines)
Address 1920 1080
Front Porch 48 3
Sync Width 32 5
Back Porch 80 23
Total 2080 1111
Frequency 66.587 KHz 59.934 Hz
Sync Polarity P N
Pixel Rate (MHz) 138.5
Refresh Rate (Hz) 60

CONFIDENTIAL – DO NOT COPY Page 4-2
File No. SG-0362
HD video digital preset modes at HDMI
Mode No. Resolution
1 480i
2 480p
3 720p
4 1080i
5 1080p
Video input
Mode No. Resolution
1 480i
2 480p
3 720p
4 1080i
5 1080p
Color temperature & Speciation
R.G.B. Color temperature:
13000K 9300K 6500K Tolerance
x 0.269 0.285 0.313 ±0.030
y 0.273 0.293 0.329 ±0.030
Y N/A N/A N/A N/A

CONFIDENTIAL – DO NOT COPY Page 5-1
File No. SG-0362
Chapter 5 Pin Assignment
1 Video Graphics Array (VGA) connector pin assignment
The TFT LCD analog display monitors use a 15 Pin Mini D-Sub connector as video input
source.
Pin Description
1 Red
2 Green
3 Blue
4 Ground
5 Ground
6 R-Ground
7 G-Ground
8 B-Ground
9 +5V for DDC
10 Ground
11 No Connection
12 (SDA)
13 H-Sync (Composite Sync)
14 V-Sync
15 (SCL)
1
15
5
106
11