LG 55EA8800 User manual

Printed in KoreaP/NO : MFL67874502 (1311-REV00)
CHASSIS : EJ34D
MODEL : 55EA8800 55EA8800-SC
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
OLED TV
SERVICE MANUAL
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only

- 2 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ................................................................................. 3
SPECIFICATION ....................................................................................... 6
ADJUSTMENT INSTRUCTION .............................................................. 14
EXPLODED VIEW .................................................................................. 21
SCHEMATIC CIRCUIT DIAGRAM ..............................................................

- 3 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
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 the circuitry 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 MΩand 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 exposed metallic part. 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
IMPORTANT SAFETY NOTICE
SAFETY PRECAUTIONS

- 4 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONS on page 3 of this publication.
NOTE: If unforeseen circumstances create conict between the
following servicing precautions and any of the safety precautions
on page 3 of this publication, always follow the safety precautions.
Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power
source before;
a. Removing or reinstalling any component, circuit board mod-
ule or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug or
other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic
capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an explo-
sion hazard.
2. Test high voltage only by measuring it with an appropriate
high voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc".
3. Do not spray chemicals on or near this receiver or any of its
assemblies.
4. Unless specied otherwise in this service manual, clean
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable
non-abrasive applicator; 10 % (by volume) Acetone and 90 %
(by volume) isopropyl alcohol (90 % - 99 % strength)
CAUTION: This is a ammable mixture.
Unless specied otherwise in this service manual, lubrication of
contacts in not required.
5. Do not defeat any plug/socket B+ voltage interlocks with which
receivers covered by this service manual might be equipped.
6. Do not apply AC power to this instrument and/or any of its
electrical assemblies unless all solid-state device heat sinks are
correctly installed.
7. Always connect the test receiver ground lead to the receiver
chassis ground before connecting the test receiver positive
lead.
Always remove the test receiver ground lead last.
8. Use with this receiver only the test xtures specied in this
service manual.
CAUTION: Do not connect the test xture ground strap to any
heat sink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged eas-
ily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some eld-effect transistors
and semiconductor “chip” components. The following techniques
should be used to help reduce the incidence of component dam-
age caused by static by static electricity.
1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic
charge on your body by touching a known earth ground. Alter-
natively, obtain and wear a commercially available discharging
wrist strap device, which should be removed to prevent poten-
tial shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or expo-
sure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES
devices.
4. Use only an anti-static type solder removal device. Some solder
removal devices not classied as “anti-static” can generate
electrical charges sufcient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufcient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads electri-
cally shorted together by conductive foam, aluminum foil or
comparable conductive material).
7. Immediately before removing the protective material from the
leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be
installed.
CAUTION: Be sure no power is applied to the chassis or circuit,
and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replace-
ment ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your
foot from a carpeted oor can generate static electricity suf-
cient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropriate
tip size and shape that will maintain tip temperature within the
range or 500 °F to 600 °F.
2. Use an appropriate gauge of RMA resin-core solder composed
of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and well tinned.
4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
bristle (0.5 inch, or 1.25 cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.
5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.
(500 °F to 600 °F)
b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-
type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
(500 °F to 600 °F)
b. First, hold the soldering iron tip and solder the strand against
the component lead until the solder melts.
c. Quickly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it there
only until the solder ows onto and around both the compo-
nent lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
d. Closely inspect the solder area and remove any excess or
splashed solder with a small wire-bristle brush.

- 5 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent at against the cir-
cuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by
gently prying up on the lead with the soldering iron tip as the
solder melts.
2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing
the IC.
Replacement
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and
solder it.
3. Clean the soldered areas with a small wire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).
"Small-Signal" Discrete Transistor
Removal/Replacement
1. Remove the defective transistor by clipping its leads as close
as possible to the component body.
2. Bend into a "U" shape the end of each of three leads remaining
on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the corresponding
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder
each connection.
Power Output, Transistor Device
Removal/Replacement
1. Heat and remove all solder from around the transistor leads.
2. Remove the heat sink mounting screw (if so equipped).
3. Carefully remove the transistor from the heat sink of the circuit
board.
4. Insert new transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heat sink.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as pos-
sible to diode body.
2. Bend the two remaining leads perpendicular y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed whenever
this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC connec-
tions).
1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely necessary).
2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper wire and
carefully crimp it around the IC pin. Solder the IC connection.
4. Route the jumper wire along the path of the out-away copper
pattern and let it overlap the previously scraped end of the
good copper pattern. Solder the overlapped area and clip off
any excess jumper wire.
At Other Connections
Use the following technique to repair the defective copper pattern
at connections other than IC Pins. This technique involves the
installation of a jumper wire on the component side of the circuit
board.
1. Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.
2. Trace along the copper pattern from both sides of the pattern
break and locate the nearest component that is directly con-
nected to the affected copper pattern.
3. Connect insulated 20-gauge jumper wire from the lead of the
nearest component on one side of the pattern break to the lead
of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so the
it does not touch components or sharp edges.

- 6 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement .
1. Application range
This spec sheet is applied all of the 55”, OLED TV with
EJ34D chassis
2. Test condition
Each part is tested as below without special notice.
1) Temperature : 25 ºC ± 5 ºC, CST : 40 ºC±5 ºC
2) Relative Humidity: 65 % ± 10 %
3) Power Voltage
Standard input voltage (100~240V@ 50/60Hz)
* Standard Voltage of each products is marked by models.
4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.
5) The receiver must be operated for about 20 minutes prior to
the adjustment.
3. Test method
1) Performance: LGE TV test method followed
2) Demanded other specification
- Safety : CE, IEC specification
- EMC: CE, IEC
4. General Specification
No Item Specication Remark
1. Display Screen Device 55” wide color display module 55EA8800-SC
2. Aspect Ratio 16:9 All
3. LCD Module LC550LUD-MFP3 55EA8800-SC
4. Operating Environment TFT Temp. : 0 ~ 40 deg
Humidity : 0 ~ 85%
LGE SPEC
ALEF Temp. : 0 ~ 50 deg
Humidity : 20 ~ 90%
5. Storage Environment TFT Temp. : -20 ~ 60 deg
Humidity : 10 ~ 90%
ALEF Temp. : 0 ~ 50 deg
Humidity : 20 ~ 90%
6. Input Voltage AC100 ~ 240V, 50/60Hz

- 7 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5. External input format
5.1. 2D mode
5.1.1. Component input (Y, CB/PB, CR/PR)
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock 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

- 8 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.1.2. HDMI Input 1 (PC/DTV)
No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed
HDMI-PC
1 640*350 31.468 70.09 25.17 EGA Х
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 80.00 VESA O
7 1280*1024 63.981 60.020 108.00 VESA (SXGA) O
8 1360*768 47.712 60.015 85.50 VESA (WXGA) O
9 1920*1080 67.5 60 148.5 WUXGA(Reduced Blanking) O
10 3840*2160 54 24.00 297.00 UDTV 2160P Only UD Model
11 3840*2160 56.25 25.00 297.00 UDTV 2160P Only UD Model
12 3840*2160 67.5 30.00 297.00 UDTV 2160P Only UD Model
HDMI-DTV
1 720*576 15.625 50 13.50 SDTV, DVD 576I(625I)
2 640*480 31.47 59.94 25.175 SDTV 480P
3 640*480 31.5 60 25.200 SDTV 480P
4 720*480 31.47 59.94 27.00 SDTV 480P
5 720*480 31.5 60 27.027 SDTV 480P
6 720*576 31.25 50 27 SDTV 576P
7 1280*720 37.50 50.00 74.25 HDTV 720P
8 1280*720 45.00 60.00 74.25 HDTV 720P
9 1280*720 44.96 59.94 74.176 HDTV 720P
10 1920*1080 33.75 60.00 74.25 HDTV 1080I
11 1920*1080 33.72 59.94 74.176 HDTV 1080I
12 1920*1080 28.125 50 74.25 HDTV 1080I
13 1920*1080 67.500 60 148.50 HDTV 1080P
14 1920*1080 67.432 59.939 148.352 HDTV 1080P
15 1920*1080 27.000 24.000 74.25 HDTV 1080P
16 1920*1080 26.97 23.976 74.176 HDTV 1080P
17 1920*1080 33.75 30.000 74.25 HDTV 1080P
18 1920*1080 33.71 29.97 74.176 HDTV 1080P
19 1920*1080 28.125 25 74.25 HDTV 1080P
20 1920*1080 56.25 50 148.5 HDTV 1080P
21 3840*2160 53.95 23.976 297.00 UDTV 2160P
22 3840*2160 54 24.00 297.00 UDTV 2160P
23 3840*2160 56.25 25.00 297.00 UDTV 2160P
24 3840*2160 61.43 29.970 297.00 UDTV 2160P
25 3840*2160 67.5 30.00 297.00 UDTV 2160P

- 9 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.2. 3D Mode
5.2.1. HDMI Input 1.4b (3D supported mode automatically)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) VIC 3D input
proposed mode Proposed
1 640*480 31.469 / 31.5 59.94/ 60 25.175/25.2 1 Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 480P)
Secondary(SDTV 480P)
62.938 / 63 59.94/ 60 50.35/50.4 1 Frame packing
Line alternative
Secondary(SDTV 480P)
(SDTV 480P)
31.469 / 31.5 59.94/ 60 50.35/50.4 1 Side-by-side(Full) (SDTV 480P)
2 720*480 31.469 / 31.5 59.94 / 60 27.00/27.03 2,3 Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 480P)
Secondary(SDTV 480P)
62.938 / 63 59.94 / 60 54/54.06 2,3 Frame packing
Line alternative
Secondary(SDTV 480P)
(SDTV 480P)
31.469 / 31.5 59.94 / 60 54/54.06 2,3 Side-by-side(Full) (SDTV 480P)
3 720*576 31.25 50 27 17,18 Top-and-Bottom
Side-by-side(half)
Secondary(SDTV 576P)
Secondary(SDTV 576P)
62.5 50 54 17,18 Frame packing
Line alternative
Secondary(SDTV 576P)
(SDTV 576P)
31.25 50 54 17,18 Side-by-side(Full) (SDTV 576P)
4 1280*720 37.5 50 74.25 19 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 720P)
Primary(HDTV 720P)
75 50 148.5 19 Frame packing
Line alternative
Primary(HDTV 720P)
(HDTV 720P)
37.5 50 148.5 19 Side-by-side(Full) (HDTV 720P)
44.96 / 45 59.94 / 60 74.18/74.25 4 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 720P)
Primary(HDTV 720P)
89.91 / 90 59.94 / 60 148.35/148.5 4 Frame packing
Line alternative
Primary(HDTV 720P)
(HDTV 720P)
44.96 / 45 59.94 / 60 148.35/148.5 4 Side-by-side(Full) (HDTV 720P)

- 10 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) VIC 3D input
proposed mode Proposed
5 1920*1080 33.72 / 33.75 59.94 / 60 74.18/74.25 5 Top-and-Bottom
Side-by-side(half)
Secondary(HDTV 1080I)
Primary(HDTV 1080I)
67.432 / 67.5 59.94 / 60 148.35/148.5 5 Frame packing
Line alternative
Primary(HDTV 1080I)
(HDTV 1080I)
33.72 / 33.75 59.94 / 60 148.35/148.5 5 Side-by-side(Full) (HDTV 1080I)
28.125 50.00 74.25 20 Top-and-Bottom
Side-by-side(half)
Secondary(HDTV 1080I)
Primary(HDTV 1080I)
56.25 50.00 148.5 20 Frame packing
Line alternative
Primary(HDTV 1080I)
(HDTV 1080I)
28.125 50.00 148.5 20 Side-by-side(Full) (HDTV 1080I)
26.97 / 27 23.97 / 24 74.18/74.25 32 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Primary(HDTV 1080P)
43.94 / 54 23.97 / 24 148.35/148.5 32 Frame packing
Line alternative
Primary(HDTV 1080P)
(HDTV 1080P)
26.97 / 27 23.97 / 24 148.35/148.5 32 Side-by-side(Full) (HDTV 1080P)
28.125 25 74.25 33 Top-and-Bottom
Side-by-side(half)
Secondary(HDTV 1080P)
Secondary(HDTV 1080P)
56.25 25 148.5 33 Frame packing
Line alternative
Secondary(HDTV 1080P)
(HDTV 1080P)
28.125 25 148.5 33 Side-by-side(Full) (HDTV 1080P)
33.716 / 33.75 29.976 / 30.00 74.18/74.25 34 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
67.432 / 67.5 29.976 / 30.00 148.35/148.5 34 Frame packing
Line alternative
Primary(HDTV 1080P)
(HDTV 1080P)
33.716 / 33.75 29.976 / 30.00 148.35/148.5 34 Side-by-side(Full) (HDTV 1080P)
56.25 50 148.5 31 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
67.43 / 67.5 59.94 / 60 148.35/148.50 16 Top-and-Bottom
Side-by-side(half)
Primary(HDTV 1080P)
Secondary(HDTV 1080P)
5.2.2. HDMI Input(1.3)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 3D input proposed mode
1 720*480 31.5 60 27.03 SDTV 480P 2D to 3D, Side by Side(Half),
Top & Bottom, Checker Board,
Frame Sequential, Row Interleaving,
Column Interleaving
2 720*576 31.25 50 27 SDTV 576P
3 1280*720 45.00 60.00 74.25 HDTV 720P
4 1280*720 37.500 50 74.25 HDTV 720P
5 1920*1080 33.75 60.00 74.25 HDTV 1080I 2D to 3D, Side by Side(Half),
Top & Bottom
6 1920*1080 28.125 50.00 74.25 HDTV 1080I
7 1920*1080 27.00 24.00 74.25 HDTV 1080P 2D to 3D, Side by Side(Half),
Top & Bottom, Checker Board,
Row Interleaving, Column Interleaving
8 1920*1080 28.12 25 74.25 HDTV 1080P
9 1920*1080 33.75 30.00 74.25 HDTV 1080P
10 1920*1080 67.50 60.00 148.5 HDTV 1080P 2D to 3D, Side by Side(Half),
Top & Bottom,
Checker Board, Single Frame Sequential,
Row Interleaving, Column Interleaving
11 1920*1080 56.250 50 148.5 HDTV 1080P

- 11 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.2.3. RF Input(3D supported mode manually)
No Resolution Proposed 3D input proposed mode
1 HD (DTV) 1080I
720P
2D to 3D
Side by Side(Half)
Top & Bottom
2 SD (DTV) 576P
576I
3 SD (ATV : CVBS / SCART)
5.2.4. RF Input (3D supported mode automatically)
No Resolution 3D input proposed mode
1 Frame Compatible Side by Side(Half),
Top & Bottom
5.2.5. USB, DLNA (Movie) Input (3D supported mode manually)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Remark
1. Under 704x480 2D to 3D
2. Over 704x480 interlaced 2D to 3D, Side by Side(Half), Top & Bottom
3. Over 704x480 progressive 50 / 60 2D to 3D, Side by Side(Half),
Top & Bottom, Checker Board,
Row Interleaving, Column Interleaving, Frame
Sequential
4. Over 704x480 progressive others 2D to 3D, Side by Side(Half),
Top & Bottom, Checker Board,
Row Interleaving, Column Interleaving
5.2.6. USB, DLNA (Photo) Input (3D supported mode manually)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Remark
1. Under 320x240 2D to 3D
2. Over 320x240 2D to 3D, Side by Side(Half), Top & Bottom
* USB, DNLA Input (3D supported mode automatically)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Remark
1. 1080P 33.75 30 Side by Side(Half), Top & Bottom, Checker
Board, MPO(Photo), JPS(Photo)

- 12 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
5.2.7. HDMI-PC Input(3D supported mode manually)
5.2.8. Component Input(3D supported mode manually)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark
1 1280*720 45.00 60.00 74.25 HDTV 720P 2D to 3D, Side by Side(Half),
Top & Bottom
2 1280*720 37.500 50 74.25 HDTV 720P
3 1920*1080 33.75 60.00 74.25 HDTV 1080I
4 1920*1080 28.125 50.00 74.25 HDTV 1080I
5 1920*1080 27.00 24.00 74.25 HDTV 1080P
6 1920*1080 28.12 25 74.25 HDTV 1080P
7 1920*1080 33.75 30.00 74.25 HDTV 1080P
8 1920*1080 67.50 60.00 148.5 HDTV 1080P
9 1920*1080 56.250 50 148.5 HDTV 1080P
10 Others - - - SDTV
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed
3D input proposed mode
1 1024*768 48.36 60 65 HDTV 768P 2D to 3D,
Side by Side(half)
Top & Bottom
2 1360*768 47.71 60 85.5 HDTV 768P
3 1920*1080 67.500 60 148.50 HDTV 1080P 2D to 3D,
Side by Side(half), Top & Bottom,
Checker Board, Single Frame Sequential,
Row Interleaving, Column Interleaving
4 Others - - - 640*350
720*400
640*480
800*600
1152*864
2D to 3D,
Side by Side(half), Top & Bottom

- 13 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
No. Side by Side Top & Bottom Checkerboard Single Frame
Sequential
Frame Packing Line
Interleaving
Column
Interleaving
1
R
L
R
LLLLL
L
R
L
5.2.9. Miracast, Widi (3D supported mode manually)
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Remark
1 1024X768p 30 / 60 2D to 3D, Side by Side(Half),
Top & Bottom
2 1280x720p 30 / 60
3 1920X1080p 30 / 60
4 Others 2D to 3D
●REMARK: 3D INPUT MODE

- 14 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied all of the EJ34D OLED TV
models, which produced in manufacture department or similar
LG TV factory
2. Designation
(1) The adjustment is according to the order which is
designated and which must be followed, according to the
plan whic al Unit: Product Specification Standard.
(2) Power adjustment : Free Voltage.
(3) Magnetic Field Condition: Nil.
(4) Input signal Unit: Product Specification Standard.
(5) Reserve after operation: Above 5 Minutes (Heat Run).
Temperature : at 25
ºC ±5 ºC
Relative humidity : 65 ± 10%
Input voltage : 100~220V, 50/60Hz
(6) Adjustment equipments : Color Analyzer (CA-210 or
CA-110), SVC remote controller
(7) Push The “IN STOP KEY” – For memory initialization.
3. Main PCB check process
3.1. Main PCBA Adjustments
(1) ADC adjustment: Component 480i, 1080p / RGB-PC 1080p
(2) EDID downloads for HDMI and RGB-PC
(3) MAC Address / ESN / Widevine Download
※Remark
- Above adjustment items can be also performed in Final
Assembly if needed. Adjustment items in both PCBA and
final assembly stages can be checked by using the INSTART
Menu → 1.ADJUST CHECK
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
* After downloading, have to adjust TOOL OPTION again.
(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each of models has their number.)
[See the BOM]
(4) Completed selecting Tool option.
● Tool option
Model Module Tool
option1
Tool
option2
Tool
option3
Tool
option4
Tool
option5
Tool
option6
Tool
option7
55EA8800-SC LGD 32775 54561 5817 37085 39062 1359 47243
3.3. ADC Process
3.3.1. ADC Calibration : Internal Auto ADC
ADC calibration is not necessary because MAIN SoC
(LGExxxx) is already calibrated from IC Maker
3.3.2. Manual ADC Calibration
3.3.2.1. Equipment & Condition
(1) Adjustment Remocon
(2) 801GF (802B, 802F, 802R) or MSPG925FA Pattern
Generator
- Resolution: 480i Comp1 (MSPG-925FA: model-209,
pattern-65)
- Resolution: 1080p Comp1 (MSPG-925FA: model-225,
pattern-65)
- Resolution : 1080p RGB (MSPG-925FA: model-225,
pattern-65)
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level: 0.7±0.1 Vp-p
3.3.2.2. Adjust method
▪ ADC 480i/1080p Comp
(1) Check connected condition of Comp cable to the
equipment
(2) Give a 480i Mode, Horizontal 100% Color Bar Pattern to
Comp1. (MSPG-925FA -> Model: 209, Pattern: 65)
(3) Change input mode as Component1 and picture mode as
“Standard”
(4) Press the In-start Key on the ADJ remote after at least 1
min of signal reception. Then, select 7.External ADC. And
Press OK or Right Button for going to sub menu.
(5) Press OK in Comp 480i menu
(6) Give a 1080p Mode, Horizontal 100% Color Bar Pattern to
Comp1. (MSPG-925FA -> Model: 225, Pattern: 65)
(7) Press OK in Comp 1080p menu
(8) If ADC Comp is successful, “ADC Component Success” is
displayed.
(9) If ADC calibration is failure, “ADC Component Fail” is
displayed.
(10) If ADC calibration is failure, after rechecking ADC pattern
or condition, retry calibration
(11) If ADC calibration is failure, after recheck ADC pattern or
condition, retry calibration
Case1 : Software version up
1) After downloading S/W by USB , TV set will reboot
automatically
2) Push “In-stop” key
3) Push “Power on” key
4) Function inspection
5) After function inspection, Push “In-stop” key.
Case2 : Function check at the assembly line
1) When TV set is entering on the assembly line, Push
“In-stop” key at first.
2) Push “Power on” key for turning it on.
=> If you push “Power on” key, TV set will recover channel
information by itself.
3).After function inspection, Push “In-stop” key.

- 15 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
3.4. Function Check
3.4.1. Check display and sound
■ Check Input and Signal items. (cf. work instructions)
(1) TV
(2) AV (CVBS)
(3) COMPONENT (480i)
(4) HDMI
* Display and Sound check is executed by Remote controller.
※Caution : Not to push the INSTOP KEY after completion if
the function inspection.
3.5. EDID/DDC Download
3.5.1. 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
3.5.2. Equipment
▪ Adjust remocon.
▪ Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need
3.5.3. 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
3.6. MAC Address, ESN Key and Widevine
Key download
3.6.1. Equipment & Condition
(1) Play file: keydownload.exe
3.6.2. Communication Port connection
(1) Key Write: Com 1,2,3,4 and 115200 (Baudrate)
(2) Barcode: Com 1,2,3,4 and 9600 (Baudrate)
3.6.3. Download process
(1) Select the download items.
(2) Mode check: Online Only
(3) Check the test process
- US, Canada models: DETECT → MAC_WRITE →
WIDEVINE_WRITE
- Korea, Mexico models: DETECT → MAC_WRITE →
WIDEVINE_WRITE
(4) Play: START
(5) Check of result: Ready, Test, OK or NG
3.6.4. Communication Port connection
(1) Connect: PCBA Jig→ RS-232C Port == PC → RS-232C
Port
3.7. LAN port Inspection (Ping Test)
3.7.1. LAN port Inspection (Ping Test)
(1) Play the LAN Port Test PROGRAM.
(2) Input IP set up for an inspection to Test Program
- IP number: 12.12.2.2

- 16 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
3.7.2. LAN PORT inspection (PING TEST)
1) Play the LAN Port Test Program.
2) connect each other LAN Port Jack.
3) Play Test (F9) button and confirm OK Message.
4) remove LAN CABLE
3.8. Camera Port Inspection
(1) Objective : To check PCBA’s CAMERA Port.
(2) How-it-works
i) Connect the PCBA like below Picture.
ii) Send specific RS-232C Command for displaying Camera
Preview.
* CAMERA need to be status of Slide up.
(3) RS-232C Command
RS-232C COMMAND Explanation
CMD DATA ID
Ai 00 23 Camera Function Start.
Ai 00 24 Camera Function End.
4. Total Assembly line process
4.1. Adjustment Preparation
■ W/B Equipment condition
▪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.
- Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
- Principle : To adjust the white balance without the
saturation,Fix the one of R/G/B gain to 192 (default data) and
decrease the others.
- Adjustment mode : Three modes – Cool / Medium / Warm
● Required Equipment
- Remote controller for adjustment
- Color Analyzer : CA100+ or CA-210 or same product (should
be used in the calibrated ch by CS-1000)
▪ LCD TV : CH-9
▪ PDP TV : CH-10
▪ White LED TV : CH-14
▪ ALEF : CH-18
▪ RGB LED(MNT) : CH-16
- Auto W/B adjustment instrument(only for Auto adjustment)
4.1.1. Adjustment of White Balance :
(For Automatic Adjustment)
Connecting dia gram of equipment for
measuring (For Automatic Adjustment)
(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
Color Analyzer
Computer
Pattern Generator
※
Signal Source
Probe
RS-232C
RS-232C
RS-232C
※
If TV internal pattern is used, not needed

- 17 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.1.2. Adjustment of White Balance
(for Manual adjustment)
4.1.2.1. 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
1) After Aging Start, Keep the Power ON status during 5
Minutes.
2) In case of LCD, Back-light on should be checked using no
signal or Full-white pattern.
4.1.2.2. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:
CH14)
(2) Adj. Computer (During auto adj., RS-232C protocol is
needed)
(3) Adjust Remocon
(4) Video Signal Generator MSPG-925F 720p/216-Gray
(Model: 217, Pattern: 78)
4.1.2.3. Adjustment
(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 216 Gray 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.
※If internal pattern is not available, use RF input. In EZ Adj.
menu 6.White Balance, you can select one of 2 Test-
pattern: ON, OFF. Default is inner(ON). By selecting OFF,
you can adjust using RF signal in 216 Gray pattern.
4.1.3. LED White balance table
(for Manual adjustment)
4.1.3.1. Cool Mode
(1) Purpose : Especially G-gain fix adjust leads to the luminance
enhancement. Adjust the color temperature to reduce the
deviation of the module color temperature.
(2) Principle : To adjust the white balance without the saturation,
Adjust the G gain more than 172 ( If R gain or G gain is more
than 255 , G gain can adjust less than 172 ) and change the
others ( R/B Gain ).
(3) Adjustment mode : mode – Cool
4.1.3.2.Medium / Warm Mode
(1) Purpose : Adjust the color temperature to reduce the deviation
of the module color temperature.
(2) Principle : To adjust the white balance without the
saturation,Fix the one of R/G/B gain to 192 (default data) and
decrease the others.
(3) Adjustment mode : Two modes – Medium / Warm
▪ Standard color coordinate and temperature when using the
CA100+or CA210 equipment
Mode Coordinate Temp △uv
X Y
Cool 0.271±0.002 0.270±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 0.0030
change reason : When vivid mode, more detail than other
company set.
▪ In case of Edge LED module, the color coordinates is changing
by aging, so you have to use the below table.
The Time Table of color coordinates by SET Aging Time
(1) LED Models(LA7xxx, LA8XXX, 55LA9600)_nomal line
GP4 Aging time
(Min)
Cool Medium Warm
X Y X Y X Y
271 270 285 293 313 329
1 0-2 281 287 295 310 320 342
2 3-5 280 285 294 308 319 340
3 6-9 278 284 292 307 317 339
4 10-19 276 281 290 304 315 336
5 20-35 275 277 289 300 314 332
6 36-49 274 274 288 297 313 329
7 50-79 273 272 287 295 312 327
8 80-119 272 271 286 294 311 326
9 Over 120 271 270 285 293 310 325
(2) LED Models(LA7xxx, LA8XXX, 55LA9600)_againg
chamber
GP4 Aging time
(Min)
Cool Medium Warm
X Y X Y X Y
271 270 285 293 313 329
1 0-5 280 285 294 308 319 340
2 6-10 276 280 290 303 315 335
3 11-20 272 275 286 298 311 330
4 21-30 269 272 283 295 308 327
5 31-40 267 268 281 291 306 323
6 41-50 266 265 280 288 305 320
7 51-80 265 263 279 286 304 318
8 81-119 264 261 278 284 303 316
9 Over 120 264 260 278 283 303 315

- 18 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
■ In the SET applied LED module (LM9600), cause of the
physical characteristics of LED Module, sets are taken a 120
minutes by aging time to stabilize a color coordinates.
So White Balance Control equipments have to get the SET
Aging Time from the SET and then going to control the W/B by
revise color coordinates at each time
- To check the Coordinates of White Balance, you have to
measure at the below conditions.
Picture Mode : select Vivid and change
Dynamic Contrast : Off ,
Dynamic Colour : Off,
Clear White : Off
→ Picture Mode change : Vidid → Vivid(User)
(If you miss the upper condition, the coordinates of W/B can
be lower than the spec.)
4.2. DPM operation confirmation (Only
Apply for MNT Model)
Check if Power LED Color and Power Consumption operate
as standard.
■ Set Input to RGB and connect D-sub cable to set
■ Measurement Condition: (100~240V@ 50/60Hz)
■ Confirm DPM operation at the state of screen without Signal
4.3. DDC EDID Write (HDMI 256Byte)
■ Connect HDMI Signal Cable to HDMI Jack.
■ Write EDID DATA to EEPROM(24C02) by using DDC2B
protocol.
■ Check whether written EDID data is correct or not.
* For SVC main Ass’y, EDID have to be downloaded to Insert
Process in advance
4.4. EDID DATA
1) All Data : HEXA Value
2) Changeable Data :
*: Serial No : Controlled / Data:01
**: Month : Controlled / Data:00
***:Year : Controlled
****:Check sum
- Auto Download
■After enter Service Mode by pushing “ADJ” key,
■Enter EDID D/L mode.
■Enter “START” by pushing “OK” key
※Edid data and Model option download (RS232)
● For LA96 series
HDMI EDID Data
1) HDMI 1 Check sum : 0XE8, 0X81 (CEA Block 0x1E :10)
2) HDMI 2 Check sum : 0XE8, 0X71 (CEA Block 0x1E :20)
3) HDMI 3 Check sum : 0x E8, 0X61 (CEA Block 0x1E :30)
3) HDMI 4 Check sum : 0x E8, 0X51 (CEA Block 0x1E :40)
4.5. Local Dimming Inspection
(1) Press ‘TILT” key of the Adj. R/C and check moving
patterns. The black bar patterns moves from top to bottom.
If a local dimming function does not work, a whole screen
shows full white.
NO Item CMD 1 CMD 2 Data 0
Enter
download
MODE
Download
‘Mode In’ A A 0 0
When transfer
the ‘Mode In’,
Carry the com-
mand
Edid data
and Model
option
download
Download A E 00 10
Automatically
download
(The use of a
internal Data)

- 19 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.6. Magic Motion remote controller Check
4.6.1. Test equipment
▪ RF-remote controller for check, IR-KEY-CODE remote
controller.
▪ Check AA battery before test. A recommendation is that a
tester change battery every lots.
4.6.2. Test
a) If you select the ‘start key(wheel)’ on the controller, you can
pairing with the TV SET.
b) You can check the cursor on the TV Screen, when select
the ‘Wheel Key’ on the controller
c) You must remove the pairing with the TV Set by select
‘Back + Home Key’ on the controller
4.7. 3D pattern test (Only for 3D models)
4.7.1. Test equipment
(1) Pattern Generator MSHG-600 or MSPG-6100 (HDMI 1.4
support)
(2) Pattern: HDMI mode (model No. 872, pattern No. 83)
4.7.2. Test method
(1) Input 3D test signal as Fig.1.
(2) Press ‘OK” key as a 3D input OSD is shown.
(3) Check pattern as Fig2 without 3D glasses. (3D mode
without 3D glasses)
Fig.2 Fig.3
<OK in 3D mode without 3D glasses> <NG in 3D mode without 3D glasses>
4.8. HDMI ARC Function Inspection
4.8.1. Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
4.8.2. Test method
(1) Insert the HDMI Cable to the HDMI ARC port from the
master equipment (HDMI1)
(2) Check the sound from the TV Set
(3) Check the Sound from the Speaker or using AV & Optic
TEST program (It’s connected to MSHG-600)
* Remark: Inspect in Power Only Mode and check SW version
in a master equipment

- 20 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.9. MHL Test
Step 1) Turn on TV
Step 2) Select HDMI4 mode using input Menu.
Step 3) Set MHL Zig(M1S0D3617) using MHL input, output and
power cord.
Step 4) Connect HDMI cable between MHL Zig and HDMI4 port.
Step 5) Check LED light of Zig and Module of Set
Result) If, The LED light is green and The Module shows normal
stream -> OK
Else -> NG
4.10. Camera Function Inspection
(1) Objective : To check how it connects between Camera and
PCBA normally, and their Function
(2) Test Method : This Inspection is available only Power-Only
Status.
- Slide Camera Up.
- Camera’s Preview picture apeears on TV Set.
- Slide Camera Down.
4.11. PIP/W&R Function Inspection
(1) Objective : To check the connection between sub tuner and
PCBA, and their Function
(2) Test Method : This Inspection is available only Power-Only
Status.
- Press exit key of the Adj. R/C and Press PIP key.
- Check that the SUB TUNER pop up window on the TV
Set.
- Check that the normal operation (picture, sound) of DTV
on the TV Set
4.12. Outgoing condition Configuration
■ When pressing IN-STOP key by SVC remocon, Red LED
are blinked alternatively. And then automatically turn off.
(Must not AC power OFF during blinking)
<Slide Down Status><Slide Up Status>