LG 55LS5600 Schematic

Internal Use Only

North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com

LED LCD TV

SERVICE MANUAL

CHASSIS : LA21B

MODEL : 55LS5600 55LS5600-UC

CAUTION

BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

Printed in KoreaP/NO : MFL67402828 (1202-REV00)

CONTENTS

CONTENTS .............................................................................................. 2

PRODUCT SAFETY ................................................................................. 3

SPECIFICATION ....................................................................................... 4

ADJUSTMENT INSTRUCTION ................................................................ 9

TROUBLE SHOOTING ............................................................................ 15

BLOCK DIAGRAM .................................................................................. 23

EXPLODED VIEW .................................................................................. 24

SCHEMATIC CIRCUIT DIAGRAM ..............................................................

Only for training and service purposes

- 2 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.

General Guidance

An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.

It will also protect the receiver and it's components from being
damaged by accidental shorts of th e cir cuitry that may be
inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown,
replace it with the specified.

When replacing a high wattage resistor (Oxide Metal Film Resistor,
over 1 W), keep the resistor 10 mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Before returning the receiver to the customer,

always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.

Leakage Current Cold Check(Antenna Cold Check)

With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1 MΩ and 5.2 MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.

Leakage Current Hot Check (See below Figure)

Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this check.
Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exp ose d metallic par t. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to

0.5 mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.

Leakage Current Hot Check circuit

Only for training and service purposes

- 3 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

SPECIFICATION

NOTE : Specifications and others are subject to change without notice for improvement

1. Application range

This spec sheet is applied LCD TV with LA21B/C chassis

2. Test condition

Each part is tested as below without special notice.

1) Temperature : 25 ºC ± 5 ºC (77 ºF ± 9 ºF), CST : 40 ºC±5 ºC

2) Relative Humidity: 65 % ± 10 %

3) Power Voltage
: Standard input voltage (AC 110-240 V~, 50/60 Hz)
* Standard Voltage of each products is marked by models.

4) Specification and performance of each parts are followed

ea ch drawing and s pe cificatio n b y p art number in
accordance with BOM.

5) The receiver must be operated for about 5 minutes prior to

the adjustment.

3. Test method

1) Performance: LGE TV test method followed

2) Demanded other specification

- Safety : UL, CSA, IEC specification

- EMC: FCC, ICES, IEC specification

.

4. General Specification

No Item Specication Remark

1 Receiving System 1) ATSC / NTSC-M

2 Available Channel 1) VHF : 02~13

2) UHF : 14~69

3) DTV : 02-69

4) CATV : 01~135

5) CADTV : 01~135

3 Input Voltage 1) AC 100 ~ 240V 50/60Hz Mark : 110V, 60Hz (N.America)

4 Market NORTH AMERICA

5 Screen Size 47/55 inch Wide (1920 × 1080) FHD + 60Hz

6 Aspect Ratio 16:9

7 Tuning System FS

8 Module Edge LED LC550EUE-SEM1 (T120) LGD 47LS4600-UA

LC470EUE-SEM1 (T120) LGD 55LS4600-UA

.9 Operating

Environment

10 Storage

Environment

1) Temp : 0 ~ 40 deg

2) Humidity : ~ 80 %

1) Temp : -20 ~ 60 deg

2) Humidity : ~ 85 %

Only for training and service purposes

- 4 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

5. Component Video Input (Y, Cb/Pb, Cr/Pr)

No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed

1 720*480 15.73 60.00 13.5135 SDTV ,DVD 480I

2 720*480 15.73 59.94 13.50 SDTV ,DVD 480I

3 720*480 31.50 60.00 27.027 SDTV 480P

4 720*480 31.47 59.94 27.00 SDTV 480P

5 1280*720 45.00 60.00 74.25 HDTV 720P

6 1280*720 44.96 59.94 74.176 HDTV 720P

7 1920*1080 33.75 60.00 74.25 HDTV 1080I

8 1920*1080 33.72 59.94 74.176 HDTV 1080I

9 1920*1080 67.50 60.00 148.50 HDTV 1080P

10 1920*1080 67.432 59.94 148.352 HDTV 1080P

11 1920*1080 27.00 24.00 74.25 HDTV 1080P

12 1920*1080 26.97 23.94 74.176 HDTV 1080P

13 1920*1080 33.75 30.00 74.25 HDTV 1080P

14 1920*1080 33.71 29.97 74.176 HDTV 1080P

6. RGB (PC)

No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed DDC Remark

1 640*350 31.468 70.09 25.17 EGA X

2 720*400 31.469 70.08 28.32 DOS O

3 640*480 31.469 59.94 25.17 VESA(VGA) O

4 800*600 37.879 60.31 40.00 VESA(SVGA) O

5 1024*768 48.363 60.00 65.00 VESA(XGA) O

6 1152*864 54.348 60.053 VESA O

7 1360*768 47.712 60.015 85.50 VESA (WXGA) O

8 1920*1080 66.587 59.934 138.5 WUXGA O Full HD model Only

Only for training and service purposes

- 5 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

7. HDMI Input

No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remarks

PC (DVI) DDC

1 640*350 31.468 70.09 25.17 EGA X

2 720*400 31.469 70.08 28.32 DOS O

3 640*480 31.469 59.94 25.17 VESA(VGA) O

4 800*600 37.879 60.31 40.00 VESA(SVGA) O

5 1024*768 48.363 60.00 65.00 VESA(XGA) O

6 1152*864 54.348 60.053 VESA O

7 1280*1024 63.981 60.020 108.0 VESA (SXGA) O Full HD model Only

8 1360*768 47.712 60.015 85.50 VESA (WXGA) O

9 1920*1080 67.50 60.00 148.5 HDTV 1080P O Full HD model Only

DTV

1 720*480 31.47 60.00 27.027 SDTV 480P

2 720*480 31.47 59.94 27.00 SDTV 480P

3 1280*720 45.00 60.00 74.25 HDTV 720P

4 1280*720 44.96 59.94 74.176 HDTV 720P

5 1920*1080 33.75 60.00 74.25 HDTV 1080I

6 1920*1080 33.72 59.94 74.176 HDTV 1080I

7 1920*1080 67.50 60.00 148.50 HDTV 1080P

8 1920*1080 67.432 59.94 148.352 HDTV 1080P

9 1920*1080 27.00 24.00 74.25 HDTV 1080P

10 1920*1080 26.97 23.976 74.176 HDTV 1080P

11 1920*1080 33.75 30.00 74.25 HDTV 1080P

12 1920*1080 33.71 29.97 74.176 HDTV 1080P

Only for training and service purposes

- 6 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

8. 3D Mode (LM5800//LM4600/ CM565 models)

8.1. RF 3D Input(DTV)

No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 3D input proposed mode

1 1280*720 37.5 50 74.25 HDTV 720P Side by Side, Top & Bottom

2 1920*1080 28.125 50 74.25 HDTV 1080I Side by Side, Top & Bottom

8.2. HDMI Input (V1.4a)

- When connect the cable on TV or change the input mode, 3D display on automatically

- Display OSD information -> 1920x2205 [1080p 24], 1280x1470 [720p 60]

No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 3D input proposed mode

1 1280*720 89.9 / 90 59.94/60 148.35/148.5 HDTV 720P Frame packing (720 60p)

2 1280*720 45 60 74.25 HDTV 720P Side by Side(half), Top & Bottom

3 1920*1080 53.95 / 54 23.98 / 24 148.35/148.5 HDTV 1080P Frame packing (1080 24p)

4 1920*1080 67.5 60 148.5 HDTV 1080P Side by Side(half), Top & bottom

5 1920*1080 33.7 60 74.25 HDTV 1080i Side by Side(half), Top & Bottom

6 1920*1080 27 24 74.25 HDTV 1080P Side by Side(half), Top & Bottom

7 1920*1080 33.7 30 74.25 HDTV 1080P Side by Side(half), Top &Bottom

8.3. HDMI Input(1.3)

- Connect the HDMI cable & receiving the HDMI signal

- Press “3D” key of remote control & select 3D format below.

No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 3D input proposed mode

1 1280*720 45.00 60.00 74.25 HDTV 720P Side by Side, Top & Bottom

2 1920*1080 33.75 60.00 74.25 HDTV 1080I Side by Side, Top & Bottom

3 1920*1080 27.00 24.00 74.25 HDTV 1080P Side by Side, Top & Bottom

4 1920*1080 33.75 30.00 74.25 HDTV 1080P Side by Side, Top & Bottom

5 1920*1080 67.50 60.00 148.5 HDTV 1080P Side by Side, Top & Bottom,

Single Frame Sequential

Only for training and service purposes

- 7 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

8.4. USB Input

R

L

R

L

(1) Movie

No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 3D input proposed mode Proposed

1 1920*1080 33.75 30 74.25

Side by Side

Top & Bottom

HDTV 1080P

(2) MPO Picture 3D : when selecting the MPO file, Automatically 3D on

(3) 3D Demo in store mode

No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 3D input proposed mode

1 1920*1080 33.75 30.00 74.25 HDTV 1080P Side by Side

8.5. RGB-PC Input

No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 3D input proposed mode

1 1920*1080 66.587 59.93 138.625 HDTV 1080P Side by Side, Top & Bottom

8.6. 3D Input mode

No. Side by Side Top & Bottom Single Frame Sequential Frame Packing

1

8.7. DLNA

No. Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark

1 1920*1080 33.75 30 74.25 HDTV 1080P Side by Side, Top & Bottom

Only for training and service purposes

- 8 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

ADJUSTMENT INSTRUCTION

1. Application Range

This spec. sheet applies to LA21B/C Chassis applied LCD TV
all models manufactured in TV factory.

2. Specification

(1) Because this is not a hot chassis, it is not necessary to

use an isolation transformer. However, the use of isolation

transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of

25 ±5 °C of temperature and 65±10% of relative humidity if

there is no specific designation.
(4) The input voltage of the receiver must keep 100~240V,

50/60Hz.
(5) At first Worker must turn on the SET by using Power Only

key.
(6) The receiver must be operated for about 5 minutes prior to

the adjustment when module is in the circumstance of over

15 °C
In case of keeping module is in the circumstance of 0°C, it

should be placed in the circumstance of above 15°C for 2
hours

In case of keeping module is in the circumstance of below

-20°C, it should be placed in the circumstance of above
15°C for 3 hours.

[Caution]
When still image is displayed for a period of 20 minutes or
longer (especially where W/B scale is strong.
Digital pattern 13ch and/or Cross hatch pattern 09ch), there
can some afterimage in the black level area

3. Adjustment items

3.1. Main PCBA Adjustments

(1) ADC adjustment: Component 480i , 1080p / RGB-PC

1080p
(2) EDID download: HDMI and RGB-PC

● Above adjustment items can be also performed in Final

Assembly if needed. Both Board-level and Final assembly
adjustment items can be check using In-Start Menu (1.
Adjust Check). Component 1080p and RGB-PC Adjust will
be calculated by 480i adjust value.

4. MAIN PCBA Adjustments

4.1. ADC Adjustment

4.1.1. Overview

▪ ADC adjustment is needed to find the optimum black level

and gain in Analog-to-Digital device and to compensate RGB
deviation.

4.1.2. Equipment & Condition

(1) Protocol: RS-232C
(2) Inner Pattern

- Resolution : 1080p(Comp) / 1024*768(RGB)

- Pattern : Horizontal 100% Color Bar Pattern

- Pattern level : 0.7±0.1 Vp-p

4.1.3. Adjustment

4.1.3.1. Adjustment method

- Connect to Jig by using RS-232, adjust Component and
RGB

● Manual adj (If needed in Final Assembly)

- Required equipment : Adjustment R/C

- Enter Service Mode by pushing “ADJ” key,

- Enter Internal ADC mode by pushing ‘►’ key at [6. ADC

Calibration]

4.1.3.2. Adj. protocol

- Connect to Jig by using RS-232, adjust Component and
RGB

Protocol CMD 1 CMD 2 Data 1 Data 2 Remark

Enter
adj
mode

Start
ADC adj

a a 00 00 When

transfer
the ‘Mode

In’,Carry the

command.

a d 00 10 Automatically

adjustment
(Use internal
pattern)

3.2. Final assembly adjustment

(1) White Balance adjustment
(2) RS-232C functionality check
(3) Factory Option setting per destination
(4) Shipment mode setting (In-Stop)
(5) GND and HI-POT test

3.3. Appendix

(1) Shipment conditions
(2) Tool option menu
(3) USB Download (S/W Update, Option and Service only)
(4) Preset CH Information

Only for training and service purposes

- 9 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

4.2. EDID Download

4.2.1. Overview

- It is a VESA regulation. A PC or a MNT will display an
optimal resolution through information sharing without any
necessity of user input. It is a realization of “Plug and Play”.

4.2.2. Equipment

(1) Since EDID data is embedded, EDID download JIG, HDMI

cable and D-sub cable are not need.

(2) Adjust by using remote controller.

4.2.3. Download method

(1) Press Adj. key on the Adj. R/C.
(2) Select EDID D/L menu.
(3) By pressing Enter key, EDID download will begin
(4) If Download is successful, OK is display, but If Download is

failure, NG is displayed.
(5) If Download is failure, Re-try downloads.
[Caution] : When EDID Download, must remove RGB/HDMI

Cable.

4.2.4. EDID DATA

4.2.4.1. North America (PCM)
(1) FHD Model - 8Bit

■ HDMI 1-FHD-8BIT (C/S : E9CF)

EDID Block 0, Bytes 0-127 [00H-7FH]

0 1 2 3 4 5 6 7 8 9 A B C D E F

-----------------------------------------------------------------------------------

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01

10 | 01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 | 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
30 | 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 | 45 00 40 84 63 00 00 1E 66 21 50 B0 51 00 1B 30
50 | 40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A

60 | 3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 E9

EDID Block 1, Bytes 128-255 [80H-FFH]

0 1 2 3 4 5 6 7 8 9 A B C D E F

------------------------------------------------------------------------------­ 0 | 02 03 19 F1 48 90 22 20 05 04 03 02 01 23 09 57

10 | 07 67 03 0C 00 10 00 80 1E 02 3A 80 18 71 38 2D

20 | 40 58 2C 04 05 40 84 63 00 00 1E 01 1D 80 18 71
30 | 1C 16 20 58 2C 25 00 40 84 63 00 00 9E 01 1D 00
40 | 72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 8C
50 | 0A D0 8A 20 E0 2D 10 10 3E 96 00 40 84 63 00 00
60 | 18 26 36 80 A0 70 38 1F 40 30 20 25 00 40 84 63
70 | 00 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 CF

■ HDMI 2-FHD-8BIT (C/S : E9BF)

EDID Block 0, Bytes 0-127 [00H-7FH]

0 1 2 3 4 5 6 7 8 9 A B C D E F

-----------------------------------------------------------------------------­ 0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 | 01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26

20 | 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
30 | 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 | 45 00 40 84 63 00 00 1E 66 21 50 B0 51 00 1B 30
50 | 40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A

60 | 3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC

70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 E9

EDID Block 1, Bytes 128-255 [80H-FFH]

0 1 2 3 4 5 6 7 8 9 A B C D E F

--------------------------------------------------------------------------------

0 | 02 03 19 F1 48 90 22 20 05 04 03 02 01 23 09 57

10 | 07 67 03 0C 00 20 00 80 1E 02 3A 80 18 71 38 2D

20 | 40 58 2C 04 05 40 84 63 00 00 1E 01 1D 80 18 71
30 | 1C 16 20 58 2C 25 00 40 84 63 00 00 9E 01 1D 00
40 | 72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 8C
50 | 0A D0 8A 20 E0 2D 10 10 3E 96 00 40 84 63 00 00
60 | 18 26 36 80 A0 70 38 1F 40 30 20 25 00 40 84 63
70 | 00 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 BF

■ HDMI 3-FHD-8BIT (C/S : E9AF)

EDID Block 0, Bytes 0-127 [00H-7FH]

0 1 2 3 4 5 6 7 8 9 A B C D E F

-------------------------------------------------------------------------------

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 | 01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 | 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
30 | 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 | 45 00 40 84 63 00 00 1E 66 21 50 B0 51 00 1B 30
50 | 40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A
60 | 3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 E9

EDID Block 1, Bytes 128-255 [80H-FFH]

0 1 2 3 4 5 6 7 8 9 A B C D E F

------------------------------------------------------------------------------­ 0 | 02 03 19 F1 48 90 22 20 05 04 03 02 01 23 09 57

10 | 07 67 03 0C 00 30 00 80 1E 02 3A 80 18 71 38 2D
20 | 40 58 2C 04 05 40 84 63 00 00 1E 01 1D 80 18 71
30 | 1C 16 20 58 2C 25 00 40 84 63 00 00 9E 01 1D 00
40 | 72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 8C
50 | 0A D0 8A 20 E0 2D 10 10 3E 96 00 40 84 63 00 00
60 | 18 26 36 80 A0 70 38 1F 40 30 20 25 00 40 84 63
70 | 00 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 AF

■ RGB-FHD (C/S : 02)

EDID Block 0, Bytes 0-127 [00H-7FH]

Only for training and service purposes

- 10 -

0 1 2 3 4 5 6 7 8 9 A B C D E F

-------------------------------------------------------------------------------------

0 | 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 | 01 16 01 03 68 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 | 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80
30 | 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 | 45 00 40 84 63 00 00 1E 66 21 50 B0 51 00 1B 30
50 | 40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A

60 | 3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 | 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 00 02

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

5. Final Assembly Adjustment

If TV internal pattern is used, not needed

5.1. White Balance Adjustment

5.1.1. Overview

5.1.1.1. W/B adj. Objective & How-it-works

(1) Objective: To reduce each Panel’s W/B deviation

(2) How-it-works: When R/G/B gain in the OSD is at 192, it

means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is lowered to find
the desired value.

(3) Adj. condition: normal temperature

- Surrounding Temperature: 25±5 ºC

- Warm-up time: About 5 Min

- Surrounding Humidity: 20% ~ 80%

- Before White balance adjustment, Keep power on status,

don’t power off

5.1.1.2. Adj. condition and cautionary items
(1) Lighting condition in surrounding area surrounding lighting

should be lower 10 lux. Try to isolate adj. area into dark
surrounding.

(2) Probe location: Color Analyzer (CA-210) probe should be

within 10cm and perpendicular of the module surface
(80°~ 100°)

(3) Aging time

- After Aging Start, Keep the Power ON sta tus during 5

Minutes.

- In case of LCD, Back-light on should be checked using no

signal or Full-white pattern.

5.1.2. Equipment

(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:

CH14)

(2) Adj. Computer(D uring auto adj., RS-232C protocol is

needed)
(3) Adjust Remocon
(4) Vi deo Signal Generat or MS PG-925F 720p/ 204-Gray

(Model:217, Pattern:49)

→ Only when internal pattern is not available

※ Color Anal yzer Ma trix sh ould be calibrate d using

CS-1000

5.1.4. Adjustment Command (Protocol)

(1) RS-232C Command used during auto-adj

RS-232C COMMAND

CMD DATA ID

Wb 00 00 Begin White Balance adj.

Wb 00 ff End White Balance adj.

(internal pattern disappears )

(2) Adjustment Map

Command

Adj. item

(lower case ASCII)

CMD1 CMD2 MIN MAX

Cool R Gain j g 00 C0

G Gain j h 00 C0

B Gain j i 00 C0

R Cut

G Cut

B Cut

Medium R Gain j a 00 C0

G Gain j b 00 C0

B Gain j c 00 C0

R Cut

G Cut

B Cut

Warm R Gain j d 00 C0

G Gain j e 00 C0

B Gain j f 00 C0

R Cut

G Cut

Explanation

Data Range

(Hex.)

Default

(Decimal)

5.1.3. Equipment connection

Probe

RS-232C

Signal Source

※

Only for training and service purposes

※

Color Analyzer

RS-232C

Computer

RS-232C

Pattern Generator

- 11 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

5.1.5. Adjustment method

5.1.5.1. Auto WB calibration
(1) Set TV in ADJ mode using P-ONLY key (or POWER ON

key)

(2) Place optical probe on the center of the display

- It need to check probe condition of zero calibration before

adjustment.
(3) Connect RS-232C Cable
(4) Select mode in ADJ Program and begin a adjustment.
(5) When WB adjustment is completed with OK message,

check adjustment status of pre-set mode (Cool, Medium,

Warm)
(6) Remove probe and RS-232C cable.
※ W/B Adj. must begin as start command “wb 00 00” , and

finish as end command “wb 00 ff”, and Adj. offset if need.

5.1.5.2. Manual adj. method
(1) Set TV in Adj. mode using POWER ON
(2) Zero Calibrate the probe of Color Analyzer, then place it on

the center of LCD module within 10cm of the surface..

(3) Press ADJ key -> EZ adjust using adj. R/C -> 6. White-

Balance then press the cursor to the right (KEY►).

(When KEY(►) is pressed 204 Gray(80IRE) internal

pattern will be displayed)

(4) One of R Gain / G Gain / B Gain should be fixed at 192,

and the rest will be lowered to meet the desired value.

(5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of

color temperature.

5.1.6. Reference (White Balance Adj. coordinate and

color temperature)

▪ Luminance: 204 Gray, 80IRE

** Lamp Module

▪ Standard color coordinate and temperature using CS-1000

(over 26 inch)

Mode

Cool 0.269 0.273 13,000K 0.0000

Medium 0.285 0.293 9,300K 0.0000

Warm 0.313 0.329 6,500K 0.0000

Coordinate

X Y

Temp △uv

** Only Edge-LED OS(AUO,CMI,IPS,Sharp) Module except

AUO 65”

▪ Standard color coordinate and temperature using CS-1000

(over 26 inch)

Mode

Cool 0.271 0.276 13,000K 0.0000

Medium 0.287 0.296 9,300K 0.0000

Warm 0.315 0.332 6,500K 0.0000

▪ S ta ndard color coord in ate a nd t em per at ure u sing

CA-210(CH 14)

Mode

Cool 0.271±0.002 0.276±0.002 13,000K 0.0000

Medium 0.287±0.002 0.296±0.002 9,300K 0.0000

Warm 0.315±0.002 0.332±0.002 6,500K 0.0000

** Only Edge-LED LGD Module

▪ S ta ndard color coord in ate a nd t em per at ure u sing

CA-210(CH-14) – by aging time

GP3

Aging time

1 0-2 280 287 296 307 320 337

2 3-5 279 286 295 305 319 335

3 6-9 277 284 292 304 317 334

4 10-19 276 283 292 303 316 333

5 20-35 274 280 290 300 314 330

6 36-49 272 277 288 297 312 327

7 50-79 271 275 287 295 311 325

8 80-149 270 274 286 294 310 324

9 Over 150 269 273 285 293 309 323

Coordinate

X Y

X Y

(Min)

Temp △uv

Coordinate

Cool Medium Warm

X Y X Y X Y

269 273 285 293 313 329

Temp △uv

▪ S ta ndard color coord in ate a nd t em per at ure u sing

CA-210(CH 14)

Mode

Cool 0.269±0.002 0.273±0.002 13,000K 0.0000

Medium 0.285±0.002 0.293±0.002 9,300K 0.0000

Warm 0.313±0.002 0.329±0.002 6,500K 0.0000

Only for training and service purposes

Coordinate

X Y

Temp △uv

- 12 -

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.

5.2. Option selection per country

5.2.1. Overview

(1) Tool option selection is only done for models in Non-USA

North America due to rating

(2) Applied model: LA02D and LA02E Chassis applied to

CANADA and MEXICO

7. AUDIO output check

7.1. Audio input condition

(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation
(2) CVBS, Component: 1KHz sine wave signal (0.4Vrms)
(3) RGB PC: 1KHz sine wave signal (0.7Vrms)

5.2.2. Country Group selection

(1) Press ADJ key on the Adj. R/C, and then select Country

Group Menu

(2) Depending on destination, select KR or US, then on the

lower Country option, select US, CA, MX.

Selection is done using +, - KEY

5.2.3. Tool Option inspection

▪ Press Adj. key on the Adj. R/C, then select Tool option.

Model

Module

Tool 1 Tool 2 Tool 3 Tool 4 Tool 5

47LM4600-UA LGD 32855 2423 10523 29612 7170

55LM4600-UA LGD 32857 2423 11547 29612 7170

32LS5600-UA LGD 16725 2423 10523 29612 7202

37LS5600-UC LGD 16725 2423 9499 29612 7202

47LS5600-UC AUO 20823 2423 9499 29612 7218

55LS5600-UC LGD 20825 2423 9499 29612 7170

55LS5600-UC AUO 20825 2423 9499 29612 7218

6. GND and HI-POT Test

6.1. GND & HI-POT auto-check preparation

(1) Check the POWER CABLE and SIGNAL CABE insertion

condition

7.2. Specification

No Item Min Typ Max Unit Remark

1 Audio

practical

max Output,

L/R

9.0

8.5

10.0

8.9

12.0

9.9WVrms

(1) Measurement

condition

- EQ/AVL/Clear

Voice: Off

(2) Speaker (8Ω

Impedance)

8. EYE-Q Check

Step 1) Turn on the TV..
Step 2) Press ' EY E button' o n t he adjustm en t remote -

controller.

Step 3) Cover 'Eye Q sensor' on the front of set with your

hands, hold it for 6 seconds.

Step 4) Check "the Sensor Data" on the screen, make certain

that Data is below 10. If Data isn’t below 10 in 6

seconds, Eye Q sensor would be bad. You should
change Eye Q sensor.

Step 5) Uncover your hands from Eye Q sensor, hold it for 6

seconds.

Step 6) Check "Back Light(xxx)" on the screen, check data

increase . You should change Eye Q sensor.

6.2. GND & HI-POT auto-check

(1) Pallet moves in the station. (POWER CORD / AV CORD is

tightly inserted)
(2) Connect the AV JACK Tester.
(3) Controller (GWS103-4) on.
(4) GND Test (Auto)

- If Test is failed, Buzzer operates.

- If Test is passed, execute next process (Hi-pot test).
(Remove A/V CORD from A/V JACK BOX)
(5) HI-POT test (Auto)

- If Test is failed, Buzzer operates.

- If Test is passed, GOOD Lamp on and move to next process

automatically.

6.3. Checkpoint

(1) Test voltage

- GND: 1.5KV/min at 100mA

- SIGNAL: 3KV/min at 100mA
(2) TEST time: 1 second
(3) TEST POINT

- GND Test = POWER CORD GND and SIGNAL CABLE GND.

- Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms

Only for training and service purposes

- 13 -

<Step 2>

<Step 4>

<Step 3>

<Step 5>

<Step 6>

LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.