LG | 55SM9000PTA | Owner's Manual | LG 55SM9000PTA Owner’s Manual

LG 55SM9000PTA Owner’s Manual
CONFIDENTIAL
LED TV
SERVICE MANUAL
CHASSIS : UB93U
MODEL : 65SM8100PTA
65SM8100PVA
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL71443403 (1901-REV00)
Copyright © 2019 LG Electronics Inc. All rights reserved. Only training and service purposes.
CONTENTS
CONTENTS ............................................................................................... 2
SAFETY PRECAUTIONS ......................................................................... 3
SERVICING PRECAUTIONS .................................................................... 4
SPECIFICATION ....................................................................................... 6
SOFTWARE UPDATE ............................................................................. 10
BLOCK DIAGRAM .................................................................................. 11
EXPLODED VIEW ................................................................................... 21
DISASSEMBLY GUIDE .......................................................................... 23
TROUBLE SHOOTING GUIDE ................................................. APPENDIX
-2-
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
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
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
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
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.
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
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.
-3-
Copyright ©
LG Electronics Inc. All rights reserved.
Only 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 conflict 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
module 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 explosion 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 specified 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 flammable mixture.
Unless specified 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 fixtures specified in this
service manual.
CAUTION: Do not connect the test fixture ground strap to any
heat sink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some field-effect transistors
and semiconductor “chip” components. The following techniques
should be used to help reduce the incidence of component damage 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. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent
potential 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 exposure 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 classified as “anti-static” can generate
electrical charges sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient 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 electrically 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 replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your
foot from a carpeted floor can generate static electricity sufficient 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 wirebristle (0.5 inch, or 1.25 cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.
5. U
se 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. Q
uickly draw the melted solder with an anti-static, suctiontype 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. Q
uickly 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 flows onto and around both the component 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.
-4-
Copyright ©
LG Electronics Inc. All rights reserved.
Only 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 flat against the circuit 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 possible 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.
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 connections).
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 connected to the affected copper pattern.
3. C
onnect 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.
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.
-5-
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application range
This specification is applied to the LED TV used UB93U
chassis.
3. Test method
2. Requirement for Test
(1) Performance: LGE TV test method followed
(2) Demanded other specification
- Safety : CE, IEC specification
- EMC : CE, IEC specification
Each part is tested as below without special notice
(1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F), CST: 40 °C ± 2 °C
(2) Relative Humidity: 60 % ± 10 %
(3) Power Voltage
: Standard input voltage (AC 100-240 V~, 50/60 Hz)
* 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.
4. Model General Specification
No.
Item
1
Market
2
Broadcasting system
3
Program coverage
4
Receiving system
5
6
7
8
9
10
11
12
HDMI 1
HDMI 2
HDMI Input
HDMI 3
HDMI 4
USB Input
Component Input
Video Input
Audio Input
SPDIF out
Headphone out
Ethernet Connect
Specification
Remarks
Oceania, Asia, Middle East, Africa
(1) Digital TV : DVB-T/T2, DVB-C, DVB-S/S2
(2) Analogue TV : P
AL B/B, PAL B/G, PAL D/K, PAL-I, SECAM
B/G, SECAM D/K, NTSC-M
ATV & DVB-T/T2 : 3,000EA, DVB-S/S2 : 6,000EA
Analog : Upper Heterodyne
Digital : COFDM(DVB-T) Only DVB-T Model
Digital : COFDM(DVB-T/T2) Only DVB-T2 Model
Digital : QAM
PC / DTV Format
My Media(Movie/Photo/Music List) or SVC
Y/Pb/Pr
PAL, SECAM, NTSC
DVI Audio, Component, AV
Optical Audio out
Antenna, HDMI1, HDMI2, HDMI3, HDMI4, USB1, USB2, USB3
-6-
Only *V* models supprot DVB-S/S2
Only *V* models supprot DVB-S/S2
► DVB-T
- Guard Interval(Bitrate_Mbit/s): 1/4, 1/8, 1/16, 1/32
- Modulation : Code Rate
QPSK
: 1/2, 2/3, 3/4, 5/6, 7/8
16-QAM
: 1/2, 2/3, 3/4, 5/6, 7/8
64-QAM
: 1/2, 2/3, 3/4, 5/6, 7/8
► DVB-T2
- Guard Interval(Bitrate_Mbit/s)
1/4, 1/8, 1/16, 1/32, 1/128, 19/128, 19/256,
- Modulation : Code Rate
QPSK
: 1/2, 2/5, 2/3, 3/4, 5/6
16-QAM
: 1/2, 2/5, 2/3, 3/4, 5/6
64-QAM
: 1/2, 2/5, 2/3, 3/4, 5/6
256-QAM : 1/2, 2/5, 2/3, 3/4, 5/6
► DVB-C
- Symbolrate : 4.0Msymbols/s to 7.2Msymbols/s
- Modulation : 16QAM, 64-QAM, 128-QAM and 256-QAM
► DVB-S/S2
- Symbolrate
DVB-S2 (8PSK / QPSK) : 2 ~ 45Msymbol/s
DVB-S (QPSK) : 2 ~ 45Msymbol/s
- Viterbi
DVB-S mode : 1/2, 2/3, 3/4, 5/6, 7/8
DVB-S2 mode: 1/2, 2/3, 3/4, 3/5, 4/5, 5/6, 8/9, 9/10
Support 6Gbps
Support 6Gbps, Support ARC
Support 6Gbps
Support 6Gbps, Except UM71, UM73/74 series
UB92x : 3EA, UB93x : 2EA
Except UB92x for Middle East and Africa
4 System : PAL, SECAM, NTSC, PAL60
Except UB93x
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
5. External Input Support Format
5.1. Component input(Y, CB/PB, CR/PR)
No.
Resolution
H-freq(kHz)
V-freq(Hz)
Pixel clock(MHz)
Proposed
1
720*480i
15.73
59.94
13.50
SDTV, DVD 480I(525I)
2
720*480i
15.75
60.00
13.51
SDTV, DVD 480I(525I)
3
720*576i
15.62
50.00
13.50
SDTV, DVD 576I(625I) 50Hz
4
720*480p
31.47
59.94
27.00
SDTV 480P
5
720*480p
31.50
60.00
27.03
SDTV 480P
6
720*576p
31.25
50.00
27.00
SDTV 576P 50Hz
7
1280*720
44.96
59.94
74.18
HDTV 720P
8
1280*720
45.00
60.00
74.25
HDTV 720P
9
1280*720
37.50
50.00
74.25
HDTV 720P 50Hz
10
1920*1080
28.12
50.00
74.25
HDTV 1080I 50Hz
11
1920*1080
33.72
59.94
74.18
HDTV 1080I
12
1920*1080
33.75
60.00
74.25
HDTV 1080I
13
1920*1080
56.25
50.00
148.50
HDTV 1080P
14
1920*1080
67.43
59.94
148.50
HDTV 1080P
15
1920*1080
67.50
60.00
148.50
HDTV 1080P
5.2. HDMI input(DTV)
No.
Resolution
H-freq(kHz)
V-freq.(kHz)
Pixel clock(MHz)
Proposed
1
640*480
31.46
59.94
25.12
SDTV 480P
2
640*480
31.5
60
25.12
SDTV 480P
3
720*480
15.73
59.94
13.5
SDTV, DVD 480I(525I)
4
720*480
15.75
60
13.51
SDTV, DVD 480I(525I)
5
720*576
15.62
50
13.5
SDTV, DVD 576I(625I) 50Hz
6
720*480
31.47
59.94
27
SDTV 480P
7
720*480
31.5
60
27.02
SDTV 480P
8
720*576
31.25
50
27
SDTV 576P
9
1280*720
44.96
59.94
74.17
HDTV 720P
10
1280*720
45
60
74.25
HDTV 720P
11
1280*720
37.5
50
74.25
HDTV 720P
12
1920*1080
28.12
50
74.25
HDTV 1080I
13
1920*1080
33.72
59.94
74.17
HDTV 1080I
14
1920*1080
33.75
60
74.25
HDTV 1080I
15
1920*1080
26.97
23.97
63.29
HDTV 1080P
16
1920*1080
27
24
63.36
HDTV 1080P
17
1920*1080
33.71
29.97
79.12
HDTV 1080P
18
1920*1080
33.75
30
79.2
HDTV 1080P
19
1920*1080
56.25
50
148.5
HDTV 1080P
20
1920*1080
67.43
59.94
148.35
HDTV 1080P
21
1920*1080
67.5
60
148.5
HDTV 1080P
22
1920*1080
112.5
100
297
UDTV 2160P
-7-
Remarks
Spec. out but display
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
No.
Resolution
H-freq(kHz)
V-freq.(kHz)
Pixel clock(MHz)
Proposed
23
1920*1080
134.86
119.88
296.7
UDTV 2160P
24
1920*1080
135
120
297
UDTV 2160P
25
3840*2160
53.95
23.98
296.7
UDTV 2160P
26
3840*2160
54
24
297
UDTV 2160P
27
3840*2160
56.25
25
297
UDTV 2160P
28
3840*2160
61.43
29.97
296.7
UDTV 2160P
29
3840*2160
67.5
30
297
UDTV 2160P
30
3840*2160
112.5
50
594
UDTV 2160P
31
3840*2160
134.86
59.94
593.4
UDTV 2160P
32
3840*2160
135
60
594
UDTV 2160P
33
3840*2160
225
100
1188
UDTV 2160P
34
3840*2160
270
119.88
1186.8
UDTV 2160P
35
3840*2160
270
120
1188
UDTV 2160P
36
4096*2160
53.95
23.98
296.7
UDTV 2160P
37
4096*2160
54
24
297
UDTV 2160P
38
4096*2160
56.25
25
297
UDTV 2160P
39
4096*2160
61.43
29.97
296.7
UDTV 2160P
40
4096*2160
67.5
30
297
UDTV 2160P
41
4096*2160
112.5
50
594
UDTV 2160P
42
4096*2160
134.86
59.94
593.4
UDTV 2160P
43
4096*2160
135
60
594
UDTV 2160P
44
4096*2160
225
100
1188
UDTV 2160P
45
4096*2160
270
119.88
1186.8
UDTV 2160P
46
4096*2160
270
120
1188
UDTV 2160P
47
7680*4320
107.89
23.98
1188
8K
48
7680*4320
108
24
1188
8K
49
7680*4320
110
25
1188
8K
50
7680*4320
131.87
29.97
1188
8K
51
7680*4320
132
30
1188
8K
52
7680*4320
220
50
2376
8K
53
7680*4320
263.74
59.94
2376
8K
54
7680*4320
264
60
2376
8K
-8-
Remarks
This will be added in
USERGUIDE after MR
SW update event.
This will be added in
USERGUIDE after MR
SW update event.
8K Model Only. This will
be added in USERGUIDE
after 8K model development.
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
5.4. HDMI Input (PC)
No.
Resolution
H-freq(kHz)
V-freq.(kHz)
Pixel clock(MHz)
Proposed
1
640*350
31.46
70.09
25.17
EGA
2
720*400
31.46
70.08
28.32
DOS
3
640*480
31.46
59.94
25.17
VESA(VGA)
4
800*600
37.87
60.31
40
VESA(SVGA)
5
1024*768
48.36
60
65
VESA(XGA)
6
1360*768
47.71
60.01
84.75
VESA(WXGA)
7
1152*864
54.34
60.05
80
VESA
8
1280*1024
63.98
60.02
109
SXGA
9
1920*1080
67.5
60
158.4
WUXGA(Reduced Blanking)
10
1920*1080
134.86
119.88
296.7
UDTV 2160P
11
1920*1080
135
120
297
UDTV 2160P
12
3840*2160
53.95
23.98
296.7
UDTV 2160P
13
3840*2160
54
24
297
UDTV 2160P
14
3840*2160
56.25
25
297
UDTV 2160P
15
3840*2160
61.43
29.97
296.7
UDTV 2160P
16
3840*2160
67.5
30
297
UDTV 2160P
17
3840*2160
112.5
50
594
UDTV 2160P
18
3840*2160
134.86
59.94
593.4
UDTV 2160P
19
3840*2160
135
60
594
UDTV 2160P
20
3840*2160
225
100
1188
UDTV 2160P
21
3840*2160
270
119.88
1186.8
UDTV 2160P
22
3840*2160
270
120
1188
UDTV 2160P
23
4096*2160
53.95
23.98
296.7
UDTV 2160P
24
4096*2160
54
24
297
UDTV 2160P
25
4096*2160
56.25
25
297
UDTV 2160P
26
4096*2160
61.43
29.97
296.7
UDTV 2160P
27
4096*2160
67.5
30
297
UDTV 2160P
28
4096*2160
112.5
50
594
UDTV 2160P
29
4096*2160
134.86
59.94
593.4
UDTV 2160P
30
4096*2160
135
60
594
UDTV 2160P
31
4096*2160
225
100
1188
UDTV 2160P
32
4096*2160
270
119.88
1186.8
UDTV 2160P
33
4096*2160
270
120
1188
UDTV 2160P
34
2560*1440
88.78
60
241.5
3K
35
2560*1440
183
120
497.7
3K
36
7680*4320
107.89
23.98
1188
8K
37
7680*4320
108
24
1188
8K
38
7680*4320
110
25
1188
8K
39
7680*4320
131.87
29.97
1188
8K
40
7680*4320
132
30
1188
8K
41
7680*4320
220
50
2376
8K
42
7680*4320
263.74
59.94
2376
8K
43
7680*4320
264
60
2376
8K
-9-
Remarks
Support to HDMI-PC
This will be added in
USERGUIDE after MR SW
update event.
This will be added in
USERGUIDE after MR SW
update event.
Only UHD, 8K 60Hz
UHD DeepColor
8K Model Only. This will be
added in USERGUIDE after 8K model development.
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
SOFTWARE UPDATE
1. USB DOWNLOAD
(1) Insert the USB memory Stick to the USB port.
(2) Automatically detect the SW Version and show the below
message.
2. NSU DOWNLOAD
(This Function is needed to connect to the internet.)
(1) Menu → All Settings → General → About This TV
(3) Click [YES]: initiate the download and install of the update.
(4) Click [Check Now]: move to “About This TV” page for update.
(5) TV is updating.
(2) Click [CHEK FOR UPDATES]: system check newest version.
(3) Click [DOWNLOAD AND INSTALL].
(4) TV is updating.
(5) After finished the update, below Pop-up appear.
(6) After finished the update, below Pop-up appear.
(7) Click [Yes] : TV will be DC OFF → ON.
(8) After TV turned on, Check the updated SW Version and
Tool Option.
- 10 -
(6) Turn OFF the TV and On. Check the updated SW Version
and Tool Option.
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
To
Panel
3.5V_ST
1.0V
Eth
1V
1.8V
1.8V
1.5V
DDR
13V
13V
13V(PANEL_VCC)
Main
PMIC
3.5V
ST_BY
5V
Normal
Sub
Assy
IR / KEY
Input/ Output Power
Power Supply
3.5V_ST
MAIN Audio AMP
Vx1 51P (8 lane)
3.5V_ST
3.3V
To WIFI/ BT
Combo
13V
EPI 60P (65”:8 lane, 55” ↓ :6lane), CEDS 68P
Sub
PMIC
13V
3.5V_ST
3.3V
Normal
EPI block 13V(PANEL_VCC)
Signal Process
3.3V
3.5V_ST
1.5V
3.3V 1V
I2S Out
I2C 4
USB_WIFI
FCIC SPI/ I2C 6
Vx1 / EPI/ CEDS Main
MICOM
LAN
X_TAL
27MHz
Area OPT
I2C 2
TS
IF_S
IF
eMMC
CLK/DATA/STRB
I2C_1
1.8V 3.5V_ST
SoC
GST/MCLK/GCLK/EO/I2C 6
0.95V
USB_WIFI
0.95V
Core&CPU
ETHERNET
13V
CVBS/YPbPr
AV/COMP
5V
SPDIF OUT
SPDIF
3.3V
AMP
H/P
1.5V
MAX323
RS- 232
- 11 -
3.3V
1.8V
3.3V
IF (+/ - )
From
Power
B/ D
Air/
Cable
TUNER
(T2/C/A )
3.3V
DVB- S
TUNER
(S,S2)
IQ (+/ - ), IP(+/ - )
HDMI1
HDMI2(ARC)
HDMI3
HDMI4
USB1 (2.0)
USB2 (2.0)
eMMC (4GB)
3.5V_ST
CI Slot
NVRAM (256Kb)
5V
* H/P for US model
* CI Slot for Europe model
* HDMI4 :except UM71,UM73 model
LNB
OCP
5V
P_TS_IN
P_TS_OUT
T2/C/S/S2 H - NIM tuner
0.95V
13V
BLOCK DIAGRAM
1. Main SOC
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
- 12 -
[ PAD_GPIO17_PM(PM_SPI_CK2]
[PAD_GPIO18_PM(PM_SPI_DI2)]
[PAD_GPIO19_PM(PM_SPI_DO2)]
[PAD_GPIO10_PM(PM_SPI_CZ2)]
[PAD_MOD_TX_P02/N02 ~ P09/N09]
[PAD_I2S_IN_WS(TCON1)(GPIO)]
[PAD_I2S_IN_SD(TCON2)(GPIO)]
[PAD_SPDIF_IN(TCON3)(GPIO)]
[PAD_GPIO16(TCON4)(GPIO)]
[PAD_GPIO31SDA4]
[PAD_GPIO30SCK4]
[PAD_MOD_TX_P02/N02 ~ P09/N09]
[PAD_MOD_TX_P12(LVA3- )]
Main SoC
PMIC
&
Level Shifter
LDO
VDD
VCOM1
VCOMLFB
VCOMRFB
VCOM2
CEDS 6lane 68Pin /EPI 6Lane 60Pin
GST, E/O, MCLK, GLCK
PMIC_RESET
Sub PMIC
GMA
(2, 3, 4, 7, 8,
11, 12, 15, 16, 17)
CEDS 6lane 68Pin /EPI 6Lane 60Pin
GAMMA
BOE Only
LOCKOUT12
VTERM
BOE Panel
3840x2160@60p
1.5Gbps
68pin
GMA
(1, 5, 9, 10, 13, 24,18)
CLK(x10)
VGL1
VST
GIP_RST
LS_VGL
VGH_EVEN
VGH_ODD
HVDD
68pin
EPI 3Lane 60P ( 55” ↓ )
EPI 4Lane 60P ( 65” )
EPI 3Lane 60P ( 55” ↓ )
EPI 4Lane 60P ( 65” )
60pin
60pin
LGD Panel
3840x2160@60p
3Gbps(55” ↓ ) /2Gbps(65”)
2. EPI / CDES
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
3. Vx1
Main SOC
Panel
3840x2160@60p
[PAD_GPIO19]
[ PAD_GPIO20]
[ PAD_MOD_TX_P00~07]
[PAD_MOD_TX_P12(LVA3- )]
[PAD_MOD_TX_N12(LVA3+)]
[PAD_GPIO30SCK4]
[PAD_GPIO31SDA4]
[PAD_GPIO23]
VX1_MSE
AGP_CTL
Vx1 8Lane 51P
LOCKAn
HTPDAn
I2C_SCL6/SDA6
DATA_FORMAT_0/1
[PAD_GPIO24]
- 13 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
[B1_+3.3V_RF] 3
- 14 [CVBS] 4
[ TU_SIF] 6
[IF_AGC] 5
[ IF[N] ] 7
[ IF[P] ] 8
[SAT_AGC] 58
[ Q[N] ] 61
[ Q[P] ] 62
[ I[N] ] 60
[ I[P] ] 59
[RESET1_DEMOD] 10
D[0 - 7] 18- 25
(Phillippine only) [ERROR] 14
[MCLK] 15
[SYNC] 16
[VALID] 17
[SCL_RF] 1
[SDA_RF] 2
[LNB] 26
[LNB_TX1] 12
(Phillippine only) [+ 3.3V_DEMOD_TU] 11
[B3_+1.2V_DEMOD] 13
19Y Tuner
TU_CVBS_TU
TU_SIF_TU
IF_AGC_TU
IF_N_TU
IF_P_TU
IF_S_AGC_MIAN
IF_S_QN_MAIN
IF_S_QP_MAIN
IF_S_IN_MAIN
IF_S_IP_MAIN
/TU_RESET1_TU
FE_DEMOD1_TS_DATA [0- 7]
EWBS_TU
FE_DEMOD1_TS_CLK
FE_DEMOD1_TS_SYNC
Ready- Not user
FE_DEMOD1_TS_VAL
1.2K Ω
+3.3V_NORMAL
I2C_SCL_2
I2C_SDA_2
LNB1_OUT
Option
EXT_Demod
ReadyNot user
+ D_Demod_Core
33 Ω
3.5V_ST
+3.3V_NORMAL
33 Ω
0Ω
LNB1
IC7001
DT1805
Main Ball No : 27*27 _package
Y2 [PADA_CVBS0]
AL12 / AM12 [SIF_P/N]
AM11 [PAD_IFAGC_T]
AM10 [PAD_IM_T]
AL11 [PAD_IP_T]
AH9 [PAD_GPIO26 (DISEQC_OUT)]
AK8 [PAD_IFAGC_S]
AL9 [PAD_QM_S]
AK10 [PAD_QP_S]
AL8 [PAD_IM_S]
AM8 [PAD_IP_S]
AH4 [PAD_GPIO13]
Main SOC
[GPIO_27~34_TP0_D0~D7]
AC5 [PAD_TS2_CLK]
AD4 [PAD_TS2_SYNC]
AC4 [PAD_TS2_VLD]
AG10 [PAD_TGPIO2SCK1]
AH10 [ PAD_TGPIO3SDA1]
8 [TONECTRL]
2 [LNB]
5 [SCL]
6 [SDA]
4. TUNER
LNB1_TX
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
Tuner
DTV/MNT_V_OUT
- 15 SIF_N
SIF_P
AV1_CVBS_DET
COMP1_Pb / COMP1_Pr / COMP1_DET
COMP1/AV1/DVI_L_IN
COMP1/AV1/DVI_R_IN
COMP1_Y/CVBS
TU_SIF_TU
AV/COMP
[V2]PADA_GIN1P / [Y1] PADA_CVBS1
ST_GPIO_23_H0_ARC[AD8]
[AL15]PAD_GPIO21
[M3]PAD_EARPHONE_OUTR
[M2]PAD_EARPHONE_OUTL
[AM12] PAD_SIFM
[AL12] PAD_SIFP
Main SOC
[E10]PAD_GPIO7_PM
[F2]PAD_DDCR_DA / [F3]PAD_DDCR_CK
[D1]PAD_I2S_OUT_SD
[ E2]PAD_I2S_OUT_WS
AUD_LRCH
AUD_LRCK
AUD_SCK
SPDIF_OUT
HDMI_ARC
AUDA_OUTR
AUDA_OUTL
5
H/P AMP
TPA6138A2
(IC6300)
AMP_RESET_N
I2C_SDA_0_AMP1 / I2C_SCL_0_AMP1
[D2]PAD_I2S_OUT_BCK
[ E5]PAD_SPDIF_OUT
[ Y3]PADA_CVBS_OUT1
[ L2]PAD_LINEIN_L0
[ L1]PAD_LINEIN_R0
[ W2]PADA_RIN1P / [v3]PADA_BIN1P / [C1] PAD_I2S_OUT_SD1
[ D3]PAD_I2S_OUT_SD2(GPIO)
MAIN AMP
WA15
(IC5800)
US Only
HDMI2
LPF
HP_LOUT_JACK
HP_ROUT_JACK
HP_DET
[12]
[36]
[10,11]
[7] SDATA
[8] WCK
[38] CLK_I
SPDIF
[18, 21]
[30, 33]
LPF
LPF
H/P Jack
SPK_R+ / R-
SPK_L+ / L -
SPK R
SPK L
5. VIDEO & AUDIO IN/OUT
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
Main SOC
HDMI2.0_1_5V_DET
- 16 TMDS4 - D0/D1/D2/CLK
DDC_SCL4 / DDC_SDA4
HDMI2.0_4_HPD
HDMI2.0_4_5V_DET
TMDS3 - D0/D1/D2/CLK
DDC_SCL3 / DDC_SDA3
HDMI2.0_3_HPD
HDMI2.0_3_5V_DET
TMDS2 - D0/D1/D2/CLK
HDMI_ARC
DDC_SCL2 / DDC_SDA2
HDMI2.0_2_HPD
HDMI2.0_2_5V_DET
TMDS1 - D0/D1/D2/CLK
DDC_SCL1 / DDC_SDA1
HDMI2.0_1_HPD
HDMI_CEC
HDMI_CEC
HDMI_CEC
*except UM73 / UM71
HDMI4
HDMI3
HDMI2 with ARC
HDMI1
6. HDMI 2.0
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
DEBUG UART
Wafer
(P201)
DEBUG_RX / TX
Main
SOC
SOC_RX / TX
WIFI_DM / DP
USB2.0_3_DM / DP
USB2.0_2_DM / DP
DCDC OCP
BD2242G
(IC4501)
DCDC OCP
BD2242G
(IC4700)
- 17 -
Wafer
(P200)
RS232C
(IC7200)
5
7
Wafer 9
(P4000)10
15
16
19
20
USB3
USB2
+5V_USB3
+5V_USB3
US Only
DOUT1
RIN1
PHONE JACK
WOL/WIFI_POWER_ON
COMBO_RESET
BT_WAKEUP_DEVICE
BT_WAKEUP_HOST
IR
LED_R
KEY2
KEY1
7. USB / Wi-Fi / M-Remote / UART(Debug)
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
Vx1 only
P7100
Vx1 51P
TCON_I2C_EN
33 Ω
1.8k Ω
1.8k Ω
+3.3V_NOR
I2C_SCL6
I2C_SDA6
Main SOC
I2C_SCL4
- 18 I2C_SDA2
I2C_SCL2
I2C_SDA4
+3.3V_NOR
1.8k Ω
+3.3V_NOR
1.8 k Ω
RT6923
EPI PMIC
1.8k Ω
1.8 k Ω
EPI / CEDS only
33 Ω
33 Ω
33 Ω
100Ω
Tuner
A8303SESTR- T
LNB
NVRAM
NTP7514
AMP
8. I2C Map
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
- 19 -
POWER
PMIC
Panel
PCMCIA
HW option
ADC 1~5
DATA_FORMAT_0
DATA_FORMAT_1
VX1_MSE
AGP_CTRL
HTPDAn/MCKL_A
LOCKAn
PWM_DIM
PWM_DIM2
L/D_CLK
L/D_DO
L/D_VSYNC
TCON_I2C_EN/GCLK_A
OCP
PCM_5V_CTL
PCM_RESET
BIT0~6
Main SOC
USB1 OCP
USB2 OCP
USB_CTL3
/ USB_ODC3
H/P Jack
Component/AV Jack
Audio AMP1
Tuner
CORE DCDC
CPU DCDC
USB_CTL2
/ USB_ODC2
HP_DET
COMP1_DET
AV1_CVBS_DET
AMP_RESET_N
/TU_RESET1
VID_CORE
VID_CPU
VID_CPU2
USB2
USB1
9. GPIO(Main SOC)
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
- 20 -
+13V TO PANEL_VCC
GND
+3.5V WIFI
GND
IR / KEY/WIFI/BT
P4000
POWER WAFER
P1001
HDMI_CEC
HDMI 1 / 2 / 3 /4
JK3101/JK3102/JK3103/JK3104
PANEL_CTL
WIFI_EN
LED_R
KEY1 / KEY2
BT_WAKEUP_HOST
COMBO_RESET
BT_WAKEUP_DEVICE
WOL/WIFI_POWER_ON
EYE_SCL / EYE_SDA
IR
RL_ON
MODE_SELECT_PWM1
INV_CTL
POWER_DET
AMP_MUTE
SOC_RX/TX
INSTANT_BOOT
SYSTEM_DEBUG
SOC_RESET
WOL/ETH_POWER_ON
RESET IC
IC1300
AMP
IC5800
DTA2010M
RS232C
Debug port
P200
MSTAR- Main SOC
IC100
I2C_SCL_1_MICOM / I2C_SDA_1_MICOM
Main SOC
10k Ω
3D&L_DIM_EN
RETENTION_DISABLE
GND
51P VX1 Wafer
OPT0 NON LOGO LCD/LOGO LCD
NON LOGO OLED/LOGO OLED
OPT1 TV- NON EPI/BOX/TV EPI/BOX
OTP2 RESERVED
OPT3 M16/RTK/H15
3.5V_ST- 1.5V DCDC
IC2303
SYVL83
13V- 1V DCDC
IC2302
SN1607023
13V- 5V NORMAL DCDC
IC2500
TPS564208
13V- 3.3V NORMAL
IC2300
SN1501019
T_CON_SYS_POWER_OFF_OLED
AM_MODE_DET_OLED
EDID_WP
MODEL1_OPT_0/1/2/ 3
POWER_ON/OFF2_4
POWER_ON/OFF2_3
POWER_ON/OFF1
10 GPIO(MICOM)
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
EXPLODED VIEW (SET)
IMPORTANT SAFETY NOTICE
570
120
A9
AR2
200A
200P
A10
530
700
HP1
800
HS1
500
540
LV1
LV2
521
HW1
411
900
400
910
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by
in the 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.
- 21 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
EXPLODED VIEW (MODULE)
IMPORTANT NOTICE
MRC use only
Panel
Ass’y
200SR1
200PF
200SL2
POL(Front)
200PC
200PPF
200SL1
Rear Side
200P
200SR2
POL(Rear)
200PPR
Optical Sheet
* MRC : Module Repair Center
- 22 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
DISASSEMBLY GUIDE / ASSEMBLY GUIDE
1. DISASSEMBLY GUIDE (BACK COVER)
1) Lay the TV Set on a flat pad and Disassemble Stand Screw 4 EA.
Screw : 4ea
2) Disassemble B/C Screw
3) Prepare B/C remove after Checking the Module Holder Position.
49”
65/55”
Screw : 12 point
Holder : 65/55” 8 point, 49” 6point
- 23 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
4) Left Side : Disassemble B/C Using Opener. Put the opener into the gap of guide panel and back cover and move upward. (We
recommend disassembly from the left side)
5) Right Side : Disassemble B/C Using Opener. Put the opener into the gap of guide panel and back cover and move upward.
6) Hold the center of the back cover as shown in the picture and slide it upwards
- 24 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
2. ASSEMBLY GUIDE (BACK COVER)
1) Place the B/C on the Module Assy and push the Holder Position
2) C
heck the Upper/Left/Right Side gap to make sure the the holder is assembled correctly. → If the Holder is not assembled, B/C
is opened and easily recognized.
3) Assemble the Screw of B/C.
65/55”
49”
Screw : 12 point
Holder : 65/55” 8 point, 49” 6 point
4) Assemble Stand Screw 4 EA.
Screw : 4ea
- 25 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
3. DISASSEMBLY GUIDE (SET)
1) Remove all screw of bottom bracket and IR/Wifi Cable at P4000.
2
Screw point
2) Bottom Bracket with IR, Wifi/BT Assy
3) Remove all sort of cable
- 26 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
4) Screw disassembly
3
Screw point
5) Speaker disassembly
6) Screw disassembly
- 27 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
DISASSEMBLY GUIDE / ASSEMBLY GUIDE (MODULE)
1. Disassemble of Cover Shield
Disassemble the Screws
Disassemble the source PCB from the guide
2. Disassemble of Guide panel screw
- UP/RIGHT/LEFT Total : 18 EA
- 28 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
3. Disassemble of Case Top screw
- Screw 9 EA
4. Disassemble of screw 4 EA
5. Disassemble Hooks. (UP 2 EA Left/Right each 1 EA)
Disassemble Hooks.
About 465mm
About 25mm
About 25mm
About 465mm
- 29 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
6. Panel and Guide Panel disassembly (using adsorber)
7. Removal of Sheets
8. Removal of LGP
LED
9. Removal of Reflector
10. Removal of LED Housing Assy
LED
- 30 -
Copyright ©
LG Electronics Inc. All rights reserved.
Only training and service purposes.
TROUBLE SHOOTING GUIDE
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Contents of Standard Repair Process
No.
Error symptom (High category)
Error symptom (Mid category)
Page
1
No video/Normal audio
1
2
No video/No audio
2
Picture broken/ Freezing
3
4
Color error
4
5
Vertical/Horizontal bar, residual image, light
spot, external device color error
5
6
No power
6
Off when on, off while viewing, power auto
on/off
7
No audio/Normal video
8
9
Wrecked audio/discontinuation/noise
9
10
Remote control & Local switch checking
10
MR19 operating checking
11
12
Wifi operating checking
12
13
External device recognition error
13
3
A. Video error
B. Power error
7
8
Remarks
C. Audio error
11
D. Function error
14
E. Noise
Circuit noise, mechanical noise
14
15
F. Exterior error
Exterior defect
15
First of all, Check whether there is SVC Bulletin in GSCS System for these model.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
A. Video error
Established
date
No video/ Normal audio
Revised date
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, LVDS or EPI Cable, Speaker Cable, IR B/D Cable,,,)
☞A1
No video
Normal audio
Normal
audio
Y
☞A18
Check Back Light
On with naked eye
N
Move to No
video/No audio
Y
On
Check Power
Board
13.2V etc.
N
☞A18
Y
Replace T-con/Main
Board or module
N
Repair Power
Board or parts
Check Power Board 13.2V output
Normal
voltage
Normal
voltage
Y
Replace Inverter
or module
End
N
Repair Power
Board or parts
※Precaution
☞A4 & A2
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
1
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
A. Video error
Established
date
No video/ No audio
Revised date
☞A18
No Video/
No audio
Check various
voltages of Power
Board (13.2V…)
Normal
voltage?
Y
N
Check and
replace
MAIN B/D
End
Replace Power
Board and repair
parts
2
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
☞ A3
Check RF Signal level
Normal
Signal?
Y
A. Video error
Established
date
Picture broken/ Freezing
Revised date
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( Advanced→ Channels→ Channel Tuning→ Manual Tuning → Check the Signal )
- Signal strength (Normal : over 50%)
- Signal Quality (Normal: over 50%)
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ DVD Player ,Set-Top-Box, Different maker TV etc`
N
☞ A4
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Normal
Picture?
Y
Check
S/W Version
SVC
Bulletin?
N
Y
N
Check Tuner
soldering
Y
Close
N
S/W Upgrade
Normal
Picture?
N
Contact with signal distributor
or broadcaster (Cable or Air)
Normal N
Picture?
Y
Replace
Main B/D
Y
Close
Close
3
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
A. Video error
Established
date
Color error
Revised date
☞ A7
☞A6
Check color by input
-External Input
-AV
-HDMI
Y
Color
error?
N
※ Check
and replace
Link Cable
(EPI or Vx1
Cable) and
contact
condition
Color
error?
Y
Color
error?
Replace Main B/D
Check Test pattern
Replace module
N
N
Check error
color input
mode
☞A29
Y
End
External Input/
Component
error
Check external
device and
cable
External
device/ Cable
normal
Y
Replace Main/T-con B/D
N
Request repair
for external
device/cable
N
HDMI
error
Check external
device and
cable
Y
External
device/ Cable
normal
Replace Main/T-con B/D
4
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
A. Video error
Established
date
Vertical / Horizontal bar, residual image,
light spot, external device color error
Revised date
Vertical/Horizontal bar, residual image, light spot
☞A6
Check color condition by input
-External Input
-HDMI
Screen Y
normal?
Check
external
device
connection
condition
☞ A7
Y
Normal?
Screen N
normal?
Y
Request repair
for external
device
Replace
module
N
Check and
replace Link
Cable
N
N
☞A29
Replace
Module
End
Replace Main/T-con B/D
For LGD panel
Screen
normal?
Y
Replace Main B/D
End
For other panel
Check Test pattern
External device screen error-Color error
Check S/W Version
Check
version
N
Y
Check screen
condition by input
-External Input
-Component
-HDMI/DVI
External
Input
error
Component
error
S/W Upgrade
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Screen N
normal?
Replace
Main/T-con
B/D
Y
Request repair for
external device
Normal
screen?
Connect other external
device and cable
N
HDMI/
DVI
Y
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Y
Screen N
normal?
Replace
Main /T-con
B/D
End
5
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
B. Power error
Established
date
No power
Revised date
☞A17
☞A18
Check
LED
Power
LED On?
. Stand-By: Red or Turn On
. Operating: Turn Off
DC Power on
by pressing Power Key
On Remote control
Y
N
Normal N
operation?
Check Power
On ‘”High”
OK?
Y
Replace
Power
B/D
Y
Check Power cord
was inserted properly
☞A18
Replace Main B/D
Measure voltage of each
output of Power B/D
N
Normal?
Y
Close
Y
Check ST-BY 3.5V
Normal
Y
voltage?
☞A18
Normal Y
voltage?
Replace Main B/D
N
Replace Power B/D
N
Replace Power
B/D
6
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
B. Power error
Established
date
Off when on, off while viewing, power auto on/off
Revised date
Check outlet
Check A/C cord
Error?
N
CPU
Abnormal
Replace Main B/D
Normal?
Y
End
N
Check for all 3- phase
power out
Y
Replace Power B/D
Abnormal
1
Fix A/C cord & Outlet
and check each 3
phase out
7
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
B. Power error
Established
date
Off when on, off while viewing, power auto on/off
Revised date
* Please refer to the all cases which can be displayed on power off mode.
Power Off list
Explanation
Action contents
KEYTIMEOUT
Power off when TV is not turned off during a certain time
RESULT : micom force to trigger TV power off.
CONDITION : When pressing power key while power on/off status, CPU does not response within 8 seconds
Check & Change Main B/D
1SEC Power OFF
ACDET
5V MNT
CPUABNORMAL
NO POLING
CPUCMD
INV_ERROR
ONRF_FAIL
Almost the same as Power Off by KEYTIMEOUT. If there is no vaild communication
Bet ween CPU and MICOM for more than 5 seconds, the MICOM switcheds off PSU and
Records. Power off by 1SEC Power off. In this case, we don’t have information where the
malfunction exactly occurred. But in in indicates that CPU had stopped and rebooted.
In case of AC Off (It is normal when the power cord is unplugged.)
If there are many ACDETs connected, Power Board is defective
Power off by unstable AC power detect.
RESULT : micom check the stable power.
CONDITION : When AC on or DC on, stabilization check routine (Power Detect High
Check) fail after multi power on.
If the CPU attempts to reset in case of abnormal operation and Shut Down in case of failure.
Power off when receiving no ack.
RESULT : TV power off/on (Reboot)
CONDITION : There is no I2C response from CPU for 15 seconds.
Power off by main SoC command.
Power off by module error (OLED)
CONDITION : OLED Module send signal to micom
RESULT : Reboot, CONDITION : OLED module compensation is running but fails.
PNWASHFAIL
Power off by panel noise wash function fail case.
RESET
KEY
OFFTIMER
SLEEPTIMER
NOSIG
FANSTOP
INSTOP
AUTO OFF
RESREC
RECEND
SWDOWN
UNKNOWN
COMP_END
PNWASHDONE
When Micom is reset by AC Off
Power off by Local key
Power off by Off timer
Power off by sleep timer
Power off by No Signal
Power off by FAN operation stopped
Power off by Instop Key
Power off by auto off function
Power off by reserved recording
Power off when recording stops
Reboot by SW down load function
No meaning (same as initial value)
OLED threshold voltage degradation(Compensation) completes.
Power off by panel noise wash function complited. (OLED)
Check & Change Main B/D
Normal
Check & Change Power B/D
Check & Change Power B/D
Check & Change Main B/D
Check & Change Main B/D
Check & Change Main B/D
Check & Change OLED Module
Check & Change OLED Module
Check & Change OLED Module
Normal Case
8
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
C. Audio error
Established
date
No audio/ Normal video
Revised date
☞A21
No audio
Screen normal
Check user
menu >
Speaker off
☞A22+A18
N
Off
Check audio
13.2V of Power
Board
Normal
voltage
Y
N
Cancel OFF
Check Speaker
disconnection
Y
Replace Power Board and repair parts
N
Disconnection
Replace MAIN Board
End
Y
Replace Speaker
9
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
C. Audio error
Established
date
Wrecked audio/ discontinuation/noise
Revised date
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
Check input
signal
-RF
-External Input
signal
Wrecked audio/
Discontinuation/
Noise for
all audio
Signal
normal?
☞A22+A18
Check and replace
speaker and
connector
Check audio
B+ Voltage (13.2V)
Y
Wrecked audio/
Discontinuation/
Noise only
for D-TV
N
Normal
voltage?
Replace Main B/D
Y
N
Wrecked audio/
Discontinuation/
Noise only
for Analog
(When RF signal is not
received)
Request repair to external
cable/ANT provider
(In case of
External Input
signal error)
Check and fix
external device
Replace Power B/D
Replace Main B/D
Wrecked audio/
Discontinuation/
Noise only
for External Input
Connect and check
other external
device
Normal
audio?
End
N
Y
Check and fix external device
10
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Established
date
D. Function error
Error
symptom
Remote control & Local switch checking
Revised date
1. Remote control(R/C) operating error
☞A22
Check R/C itself
Operation
☞A22
Check & Repair
Cable connection
Connector solder
Normal Y
operating?
N
Normal
operating?
N
Y
Check R/C Operating
When turn off light
in room
Check & Replace
Baterry of R/C
If R/C operate,
Explain the customer
cause is interference
from light in room.
Y
Normal
operating?
Replace
Main B/D
☞A23
Check B+3.5V
On Main B/D
☞A18
Close
Normal
Voltage?
Y
Check IR
Output signal
N
Check 3.5v on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
Normal
Signal?
Y
N
Repair/Replace
IR B/D
Close
N
Replace R/C
11
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Established
date
D. Function error
Error
symptom
MR19 operating checking
Revised date
2. MR19(Magic Remocon) operating error
☞A4
Check the
INSTART menu
RF Receiver ver
is “00.00”?
N
Check MR19
itself Operation
Normal Y
operating?
Press the
wheel
N
☞A24
Y
Y
Check & Replace
Battery of MR19
Check & Repair
RF assy
connection
Y
Normal
operating?
☞A4
RF Receiver ver
is “00.00”?
N
Close
N
Turn off/on the
set and press
the wheel
Is show ok N
message?
Close
Close
Is show ok
message?
N
Press the back
key about 5sec
Y
Y
Replace
MR19
Close
Change the RF Receiver assy
* If you conduct the loop at 3times, change the M4.
12
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
D. Function error
Error
symptom
Wifi operating checking
Established
date
Revised date
3.Wifi operating error
☞A24
☞A4
Wi-Fi Mac
value is
“NG”?
Check the
INSTART menu
N
Check the Wifi wafer
1pin
Normal
Voltage?
N
Replace
Main B/D
Y
☞A24
Y
Close
Check & Repair
Wifi cable
connection
☞A4
Wi-Fi Mac value
is “NG”?
N
Close
Y
Change the Wifi
assy
13
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
Check
input
signal
Signal
input?
Y
D. Function error
Established
date
External device recognition error
Revised date
Check technical
information
- Fix information
- S/W Version
Technical N
information?
N
Check and fix
external device/cable
External Input
and Component
Recognition error
Replace Main B/D
HDMI/
DVI, Optical
Recognition
error
Replace Main B/D
Y
Fix in
accordance
with technical
information
15
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
Error
symptom
Identify
nose
type
Circuit
noise
Mechanical
noise
E. Noise
Established
date
Circuit noise, mechanical noise
Revised date
Check location
of noise
Replace PSU
Check location of
noise
※ When the nose is severe, replace the module
(For models with fix information, upgrade the
S/W or provide the description)
※ Mechanical noise is a natural
phenomenon, and apply the 1st level
description. When the customer does not
agree, apply the process by stage.
※ Describe the basis of the description
in “Part related to nose” in the Owner’s
Manual.
OR
※ If there is a “Tak Tak” noise from the
cabinet, refer to the KMS fix information and
then proceed as shown in the solution manual
(For models without any fix information,
provide the description)
16
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process
F. Exterior defect
Error
symptom
Zoom part with
exterior damage
Exterior defect
Module
damage
Replace module
Cabinet
damage
Replace cabinet
Remote
control
damage
Replace remote control
Stand
dent
Established
date
Revised date
Replace stand
17
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Contents of Standard Repair Process Detail Technical Manual
No.
Error symptom
1
Content
Page
Check LCD back light with naked eye
A1
2
Check White Balance value
A2
3
TUNER input signal strength checking
method
A3
Version checking method
A4
Tuner Checking Part
A5
Remarks
A. Video error_ No video/Normal audio
4
A. Video error_ video error /Video
lag/stop
5
6
A. Video error _Vertical/Horizontal bar,
residual image, light spot
Connection diagram
A6
7
A. Video error_ Color error
Check Link Cable (Vx1/EPI) reconnection
condition
A7
A-1/11
A-2/11
8
Check Cable (1) ~ (2)
9
Exchange Main Board (1) ~ (3)
A-3/11 ~
A-5/11
Exchange Module (1) ~ (3)
A-6/11 ~
A-8/11
11
Exchange T-Con (1) ~ (2)
A-9/11 ~
A-10/11
12
Exchange Power Board(PSU)
A-11/11
10
<Appendix>
Defected Type caused by T-Con/
Inverter/ Module
Only using
T-con model
Continue to the next page
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Contents of Standard Repair Process Detail Technical Manual
Continued from previous page
No.
Error symptom
13
Content
Page
Check front display LED
A17
Check power input Voltage & ST-BY 3.5V
A18
POWER OFF MODE checking method
A19
Checking method in menu when there is no
audio
A20
17
Voltage and speaker checking method when
there is no audio
A21
18
Remote control operation checking method
A22
19
Motion Remote operation checking method
A23
20
How to use the Service remote control
21
Check items after Main B/D replacement
A27
22
Adjustment Test pattern - ADJ Key
A28
23
How to use JIG
(Power B/D Diagnostic Smart Jig Multi Gender)
A29
Remarks
B. Power error_ No power
14
15
B. Power error_Off when on, off
while viewing
16
C. Audio error_ No audio/Normal
video
D. Function error
A24-A26
E. Etc
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
A. Video error_No video/Normal audio
Content
Check LCD back light with naked eye
Established
date
Revised
date
A1
After turning on the power and disassembling the case, check with the naked eye,
whether you can see light from locations.
A1
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
A. Video error_No video/Normal audio
Check White Balance value
Established
date
Revised
date
A2
<ALL MODELS>
Entry method
1. Press the ADJ button on the remote control for adjustment.
2. Enter into White Balance.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp (Cool/Medium/Warm),
re-enter the value after replacing the MAIN BOARD.
A2
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
A. Video error_Video error, video lag/stop
Content
TUNER input signal strength checking method
Established
date
Revised
date
A3
<ALL MODELS>
All Setting  Programmes 
Programme Tuning & Settings  Manual Tuning
All Settings
When the signal is strong,
use the attenuator (-10dB, 15dB, -20dB etc.)
A3
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
A. Video error_Video error, video lag/stop
Version checking method
Content
<ALL MODELS>
Established
date
Revised
date
A4
1. Checking method for remote control for adjustment
Version
Press the IN-START with the remote
control for adjustment
A4
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
A. Video error_Video error, video lag/stop
Content
TUNER checking part
Established
date
Revised
date
A5
Checking method:
1. Check the signal strength or check whether the screen is normal when the external device is connected.
2. After measuring each voltage from power supply, finally replace the MAIN BOARD.
A5
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
A. Video error _Vertical/Horizontal bar,
residual image, light spot
connection diagram (1)
Established
date
Revised
date
A6
<ALL MODELS>
As the part connecting to the external input, check
the screen condition by signal
A6
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
A. Video error_Color error
Check Link Cable(EPI) reconnection condition
Established
date
Revised
date
A7
Check the contact condition of the Link Cable, especially dust or mis insertion.
A7
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Appendix. Examples of Symptoms(Image error)
Item
Symptom
Name
Cause
CABLE
Color smear
Poor broken pin of FFC cable
CABLE
R Color Excessive
CABLE
CABLE
Check for poor cable contact
Symptom Image
Color is Excessive due to FFC Cable
Contact.
screen is dark due to poor contact due
Screen darkness to disconnection of the FFC cable pin.
G Color Excessive
G color transient due to poor FFC cable
connection
A - 1/11
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Appendix. Examples of Symptoms(Image error)
Item
Symptom
Name
Cause
CABLE
Color spread
FFC connection problem
CABLE
Color spread
FFC connection problem
CABLE
Color spread
FFC connection problem
CABLE
Screen stop
Due to foreign substance within
FFC PIN
Check for poor cable contact
Symptom Image
A - 2/11
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Appendix. Examples of Symptoms(Main)
Item
Symptom
Name
Cause
Main
Screen noise
Bit noise from horizontal screen
Main
Screen noise
Main
Dark picture
Check parts by symptom
Symptom Image
Broken screen due to
Main IC problem
Dark left-side screen
Top/bottom screen part
Main
Broken picture
Picture problem due to tuner
Inner side quality problem
A - 3/11
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Appendix. Examples of Symptoms(Main)
Item
Symptom
Name
Cause
Main
Broken screen
Broken screen in a horizontal manner
Main
Screen spread
Screen corner appears blurry
Main
Color Spread
Color spread on the screen
Main
Blurry Screen
Blurry picture on the screen
Check parts by symptom
Symptom Image
A - 4/11
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Appendix. Examples of Symptoms(Main)
Item
Symptom
Name
Cause
Main
Broken picture
No problem at the initial stage,
G-color spread after 10 minutes
Main
Check parts by symptom
Symptom Image
Right-side
Screen
Right-side screen problem
problem
Main
Main
LG logo
Screen problem
Right-side
picture problem
Screen picture spread problem
No problem at the initial stage.
During Heat run, right-side picture
problem
A - 5/11
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Appendix. Examples of Symptoms(Module)
Symptom
Name
Cause
Isometric
Isometric horizontal bars occur
Horizontal Bar
throughout the screen
MODULE
Internal matter
BLU internal foreign matter inflow
MODULE
Image broken
6 block image broken
MODULE
Image broken
Screen sync signal broken
Item
MODULE
Check parts by symptom
Symptom Image
A - 6/11
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Only for training and service purposes
Appendix. Examples of Symptoms(Module)
Item
Symptom
Name
MODULE
Image broken
MODULE
Cause
Symptom Image
Internal damage and image breakage
due to external impact
Bend on the
Bending due to lateral external impact
screen
and internal bending of BLU
MODULE
Vertical smear
MODULE
Over color
Check parts by symptom
Vertical spreading on cube screen in no
signal
Screen contour part brightly Over color
A - 7/11
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Only for training and service purposes
Appendix. Examples of Symptoms(Module)
Item
Symptom
Name
Cause
MODULE
Vertical bar
Center Vertical Bar
MODULE
Screen darkness
Center of the screen 1 block dark
MODULE
Vertical bar
Center Vertical Bar
Check parts by symptom
Symptom Image
Darkness at the
MODULE
bottom of the
MODULE internal BLU breakage
screen
A - 8/11
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Appendix. Examples of Symptoms(Only if using T-con Board)
Item
T-CON
T-CON
T-CON
T-CON
Symptom
Name
Cause
screen lower
T-Con is defective and the picture below
image broken
the screen is broken
screen lower
T-Con is defective and the picture below
image broken
the screen is broken
screen lower
T-Con is defective and the picture below
image broken
the screen is broken
screen lower
T-Con is defective and the picture below
image broken
the screen is broken
Check parts by symptom
Symptom Image
A - 9/11
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Appendix. Examples of Symptoms((Only if using T-con Board) )Check parts by symptom
Item
Symptom
Name
T-CON
Image Broken
T-CON
Cause
Symptom Image
T-CON Wafer Locking The strength is
weak and cable contact failure occurs
Darkness at the
Initial normal operation,
top of the screen
upper darkness during heat run
T-CON
Image Broken
T-CON
Image Broken
The entire screen is dark and bit noise
occurs
The entire screen is dark and bit noise
occurs
A - 10/11
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Only for training and service purposes
Appendix : Exchange Power Board (PSU)
No Light
No picture/Sound Ok
A - 11/11
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Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
B. Power error _No power
Check front Power Indicator
Established
date
Revised
date
A17
ST-BY condition: On or Off
Power ON condition: Turn Off
A17
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Standard Repair Process Detail Technical Manual
Error
symptom
Content
Check power input voltage and ST-BY 8.4V
Established
date
Revised
date
EAY65169921, LGP65-19UL6
A9
Power Board Voltage / Current
Power P/N, Name
SET Model
65SM81
B. Power error _No power
P202,P203
Power Check Sequence
1. AC input Check : SK100 (100~240Vac)
DRV_ON (J35)
2. PWR-ON Check : J43
- SET On : above 3V
- SET St-by : 0V
LED Indicator
13.2V (J2)
3. 13.2V Level Check : J2
- SET On : 13.2V
- SET St-by : 8.4V (swing between 7V to 10V)
PWR_ON
(J43)
4. DRV_ON Check : J35
- SET On : above 3V
- SET St-by : 0V
5. LED voltage Check : P202 to P203
Picture Condition : VIVID (Backlight 100)
Voltage
Variable range [V]
Rated Current [Amean]
176.7V (159.0~194.4V)
0.63A (105mA 6string)
SK100 (AC input)
6. LED Indicator Check
- Normal condition : Not blank
- Abnormal condition : Blank 1~9 times
All condition meets, Power Board OK.
A18
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Standard Repair Process Detail Technical Manual
Error
symptom
Content
B. Power error _Off when on, off whiling viewing Established
date
POWER OFF MODE checking method
Revised
date
A19
<ALL MODELS>
Entry method
1. Press the IN-START button of the remote control for adjustment.
2. Check the entry into adjustment item 3.
A19
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Standard Repair Process Detail Technical Manual
Error
symptom
C. Audio error_No audio/Normal video
Content
Checking method in menu when there is no audio
Established
date
Revised
date
A20
<ALL MODELS>
Checking method
1. Press the Setting button on the remote control.
2. Select the Sound function of the Menu.
3. Select the Sound Out.
4. Select TV Speaker.
A20
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Standard Repair Process Detail Technical Manual
Error
symptom
C. Audio error_No audio/Normal video
Content
Voltage and speaker checking method
when there is no audio
Established
date
Revised
date
A21
①
②
③
Checking order when there is no audio
1
SPK_R-FT
2
SPK_R+FT
3
SPK_ L-FT
4
SPK_ L+FT
1. Check the contact condition of or 13.2V connector of Main Board.
2. Measure the 13.2V input voltage supplied from Power Board.
(If there is no input voltage, remove and check the connector.)
3. Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik
sound when you touch the GND and output terminal, the speaker is normal.
A21
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
D. Function error
Remote control operation checking method
Established
date
Revised
date
A22
①
IR & EYE Sensor
③
IR
LED
Eye
Checking order to check remote control
②
Checking order
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Pin name
VCC
USB_DM
USB_DP
GND
WOL/WIFI_ON
VCC
WIFI_Suspend/Resume
GND
Combo_Reset
BT_WAKEUP_HOST
GND
VCC
EYE_SDA
EYE_SCL
GND
IR
LED_R
GND
VCC
KEY2
KEY1
GND
1. Check IR cable condition between IR & Main board.( Check picture number① and ②)
2. Check the standby 3.5V on the terminal 6 pin. (③)
3. AS checking the Pre-Amp(IR LED light), the power is in ON condition, an Analog Tester
needle should move slowly, otherwise, it’s defective.
A22
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
D. Function error
Remote control operation checking method
① Wifi & BT Front
Established
date
Revised
date
A23
③
Wifi & BT Rear
②
Checking order to check motion remote/wifi
Checking order
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Pin name
VCC
USB_DM
USB_DP
GND
WOL/WIFI_ON
VCC
WIFI_Suspend/Resume
GND
Combo_Reset
BT_WAKEUP_HOST
GND
VCC
EYE_SDA
EYE_SCL
GND
IR
LED_R
GND
VCC
KEY2
KEY1
GND
1. Check BT/Wifi cable condition between BT/Wifi assy & Main board.
2. Check the 3.5V on the terminal 22.
A23
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
E. Etc
How to use the Service remote control
Established
date
Revised
date
A24
1. How to access the remote control
0
4
1
3
0
4
1
3
A24
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
E. Etc
How to use the Service remote control
Established
date
Revised
date
A25
2. Remote control part definition
POWER
Power On/Off
[ETC] Each time pressing the KEY button, Mode gets changed to ETC and P-ONLY each time
ETC (Added Function)
All KEY function [PIP PR-][PIP PR+][SWAP]
[PIP INPUT][DVI] KEY Function
P-ONLY (Added
Function)
Changed to factory mode
INPUT
Change to the external device mode
ARC
PSM
All KEY function &[INFO][STILL][HDMI HOT][USB HOT][HDMI4] KEY Action
Change in the order of 16:9=>Zoom1=>Zoom2=>Cinema Zoom=>Aucto Screen=>4:3=>16:9
Changes in the order of Bright Picture=>Easy Picture=>Cinema=>Spots=>Game=>
Custom PIcture1=>Custom Picture2=>Bright Picture
SSM (Added Function)
Standard(user)=>music=>cinema=>sports=>game=>standard(user)
PIP
Picture In Picture is activated
TEXT
Access to the Power Only mode
CAP
Broadcasting caption(on/off)
MPX
Stereo mode (mono, stereo, foreign language) access
Used when in factory mode
Simplink (Added
Function)
EYE
TILT
Access to the Simplink-connected device
Digital EYE function ON/OFF
For some Model, access to the Test Pattern
Used for screen tilting change (Access to the old PDP control mode)
A25
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
E. Etc
How to use the Service remote control
B-TOOTH
(Added function)
IN-START
Established
date
Revised
date
A26
Connected to Blue-Tooth
Model Nam ex) 42PG60D-NA Current Model Name S/W Version ex)
V03.11.0 Current S/W version
MICOM Version ex) V3.05.0 current Mi-Com version UTT ex) User TV total usage time
ADJ
POWER OFF STATUS ex) Shows power-off status
Test Pattern (Off=>White=>Red=>Green=>Blue=>Black=>Pattern=>Off) Change
X-STUDIO (Added function)
HDD,USB, external device’s HDD screen is activated
MENU
User function gets activated
EXIT
Exit from the current mode
TIME SHIFT (Added
function)
Moves forward/backward of recorded contents
MUTE
Mute function (0 Volume)
IN-STOP
SET to factory mode
VOL + -
Volume Up/Down
CH + -
Channel Up/Down
AV1,2,3 (Added function)
Connects to external input 1,2,3
COMP1,2 (Added function)
Connects to Component 1,2
HDMI1,2,3,4
(Add function)
Connects to HDMI 1,2,3,4
DVI (Add function)
Connects to DVI
A26
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
Content
E. Etc
Check items after Main B/D replacement
Established
date
Revised
date
A27
Check items afer Main B/D(Model Number D/L, White Balance)
1. Press the Service remote control instart Key.
No.7 Select Model Number D/L
- Key in the model name and serial number
after checking the ID label on the back cover.
2. Press the Service remote control ADJ Key.
No.11 Select White Balance
- Record the R, G, B (GAIN, Cut) value of the
color temperature before main board
replacement.
After replacing the main board, key in the
recorded value.
A27
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Standard Repair Process Detail Technical Manual
Error
symptom
E. Etc
Content
Adjustment Test pattern - ADJ Key
Established
date
Revised
date
A28
You can view 9 types of patterns using the ADJ Key
Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..)
4.Video error (Classification of MODULE or Main-B/D!)
A28
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Smart JIG Power Diagnosis
Muitl Gender Guide
(P/N : RAD32507801)
(P/N : RAD33187801)
A 29 (1/19)
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Power Board Muitl Gender JIG Diagram (P/N: RAD33187801)
<Defect diagnosis : Power Board
15Y
(LF/UF Series)
28Pin
18 Marking check
24Pin
Main Board>
15Y
(OLED)
16Y
(OLED B6)
24Pin
24Pin
NC
24Pin
18Pin
16Y
(OLED)
New JIG
24Pin
13Y/14Y
28Pin
No Marking
OLD JIG
24Pin
12Y
18Y
SK80/UK89
SK85/SK96
SK95/SK99
18Y/19Y
UK63/UK64
UK65/UK68
UK7050
UM76/UM79
17/18Y
/19Y
W7
B8, C8
E8, G8
W8
C9/E9
18Y/19Y
LK57,32/43/49LK54
32LK61/32LK62
43/49LK61
LM63
17Y/18Y/19Y
(OLED)
24Pin
18Pin
24 Marking Check
Cable Connection
28Pin
12Pin
12Pin
28Pin
Includes 49UJ63
17Y/18Y
(SJ/UJ/UK/SK)
16/18Y/19Y
16Y/17Y/18Y/19Y
(UH/UK/UM)
(LH/LJ/LK/LM)
16Y/17Y
(UH/SJ)
28Pin
16Y
(UH)
16Y/17Y/18Y/19Y
(UH/UJ/UK/SK/
/SM
18Y/19Y
UK74,UK75
UK77,UK78
SK79
SM86
A29 (2/19)
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Power Board Muitl Gender JIG Diagnostic model List
<15Y/16Y/17Y/18Y/19Y OLED Model, 16Y/17Y/18Y/19Y LED Model>
Year
Product
Model
‘15
OLED
EG92/EG93/EG94
EG96
EF95
OLED
B6, C6
E6, G6
LED
UH95/UH96, UH85/UH93
UH77/UH87, UH75/UH76
UH65/UH68, LH68, LH66, LH60,LH54
OLED
B7, C7, E7, G7, W7
LED
SJ95/UJ98, SJ85/UJ94
SJ80, UJ77, UJ75/UJ78
UJ65/UJ68, UJ63/UJ67
LJ61/LJ68, LJ55/LJ58
‘18
LED
SK80/SK85/SK95
UK78/UK75/UK77/SK79
UK63/UK64/UK65/UK68/UK7050
LK57, 32/43/49LK54, 32LK61/62, 43/49LK61
‘18
OLED
B8, C8, E8, G8, W8
‘19
LED
SM86
UM76/UM79
LM63
‘19
OLED
C9/E9
‘16
‘17
’17
A29 (3/19)
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Power Board Muitl Gender How to Connect
1
▶ Power Board Muitl Gender JIG
2
“A: 2013 LCD POWER”
2014
▶ Connect the Muiti Gender to the connector (black)
as shown in picture 2 of the Smart JIG.
A29 (4/19)
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Smart Jig Voltage Setting
1
2
▶ Switch the product S/W in JIG to LCD.
▶ LCD MODEL Check the power voltage
and switch to the correct voltage.
▶ Check power board voltage.
※ Note on set up
(The correct power diagnosis can be made only if it is set correctly.)
- 24V Power Board : Change the switch to 24V of Smart Jig Voltage
- 20V Power Board : Change the switch to 24V of Smart Jig Voltage
- 13.2V/18V Power Board : Change the switch to 24V of Smart Jig Voltage
Power B/D
Smart Jig Voltage Switch
24V
24V
20V
20V
13.2V/18V
24V
A29 (5/19)
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`15Y OLED(EG96,EF95,EG92,EG93,EG94) Power Board Diagnostic method (1)
1
2
▶ Switch the product S/W in JIG to LCD.
▶ LCD MODEL Check the power voltage
and switch(24V) to the correct voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
▶ Check power board voltage.
3
4
▶ Disconnect the Main Board 24Pin Power Cable connector.
▶ Connect the 24Pin Power Cable connector to the Muitl
Gender JIG 24Pin connector
A29 (6/19)
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`15Y OLED(EG96,EF95,EG92,EG93,EG94) Power Board Diagnostic method (2)
5
6
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ When the NG LED turns on, the Power Board
can be judged as defective.
A29 (7/19)
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`16Y OLED(B6) Power Board Diagnostic method
1
2
▶ Switch the LCD MODEL S/W to 24V by checking
the power voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
▶ Connect the 24Pin Power Cable connector
to the Multi gender JIG 24Pin connector.
3
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ When the NG LED turns on, the Power Board
can be judged as defective.
A29 (8/19)
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`16Y OLED(C6) Power Board Diagnostic method
1
2
▶ Check power board voltage.
▶ Smart JIG: Fix the LCD MODEL switch to 24V.(Smart JIG)
3
▶ Disconnect the Main Board 24Pin Power Cable connector.
4
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ Connect the 24Pin Power Cable connector
to the Muitl Gender JIG 24Pin connector
A29 (9/19)
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`16Y OLED(E6) Power Board Diagnostic method
1
2
▶ Check power board voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3
▶ Disconnect the Main Board 24Pin Power Cable connector.
4
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ Connect the 24Pin Power Cable connector
to the Muitl Gender JIG 24Pin connector
A29 (10/19)
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`16Y OLED(G6) Power Board Diagnostic method
1
2
▶ Check power board voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3
▶ Disconnect the Main Board 24Pin Power Cable connector.
4
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ Connect the 24Pin Power Cable connector
to the Muitl Gender JIG 24Pin connector
A29 (11/19)
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`17Y OLED(B7/C7/E7/G7) Power Board Diagnostic method
1
2
▶ Disconnect the Main Board 28Pin Power Cable connector.
3
▶ Connect the 28Pin Power Cable connector
to the Muitl Gender JIG 28Pin connector
4
▶ Switch the LCD MODEL S/W to 20V by checking
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
the power voltage.
▶ When the NG LED turns on, the Power Board
▶ Fix the LCD MODEL switch to 20V.(Smart JIG) A29 (12/19)
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`17Y OLED(W7) Power Board Diagnostic method
1
2
▶ Disconnect the Main Board 24Pin Power Cable connector.
3
▶ Connect the 24Pin Power Cable connector
to the Muitl Gender JIG 28Pin connector
4
▶ Switch the LCD MODEL S/W to 20V by checking
the power voltage.
▶ Fix the LCD MODEL switch to 20V.(Smart JIG)
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
A29 (13/19)
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`16Y/`17Y LED 18Pin Power Board Diagnostic method
2
1
▶ Check power board voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3
▶ Disconnect the Main Board 18Pin Power Cable connector.
4
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ Connect the 18Pin Power Cable connector
to the Muitl Gender JIG 24Pin connector
A29 (14/19)
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`16Y LED(UH95/UH96) Power Board Diagnostic method
1
2
▶ Check power board voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3
▶ Disconnect the Main Board 28Pin Power Cable connector.
4
▶ When the OK(24V,12V) LED turns on, Power Board is normal.
▶ Connect the 28Pin Power Cable connector
to the Muitl Gender JIG 28Pin connector
A29 (15/19)
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`16Y/`17Y LED(UH85/UH93) Power Board Diagnostic method
1
2
▶ Check power board voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3
▶ Disconnect the Main Board 28Pin Power Cable connector.
4
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ Connect the 28Pin Power Cable connector
to the Muitl Gender JIG 28Pin connector
A29 (16/19)
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`16Y/`17Y LED 12Pin Power Board Diagnostic method
2
1
▶ Check power board voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3
▶ Disconnect the Main Board 12Pin Power Cable connector.
4
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ Connect the 12Pin Power Cable connector
to the Muitl Gender JIG 12Pin connector
A29 (17/19)
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`16Y LED 12Pin Power Board Diagnostic method
2
1
▶ Check power board voltage.
▶ Fix the LCD MODEL switch to 24V.(Smart JIG)
3
▶ Disconnect the Main Board 12Pin Power Cable connector.
4
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ Connect the 12Pin Power Cable connector
to the Muitl Gender JIG 24Pin connector
A29 (18/19)
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
`17Y LED 28Pin Power Board Diagnostic method
2
1
▶ Check power board voltage.
▶ Fix the LCD MODEL switch to 20V.(Smart JIG)
3
▶ Disconnect the Main Board 28Pin Power Cable connector.
4
▶ When the OK LED(24V,12V) turns on, Power Board is normal.
▶ Connect the 28Pin Power Cable connector
to the Muitl Gender JIG 28Pin connector
A29 (19/19)
▶ When the NG LED turns on, the Power Board
can be judged as defective.
Copyright © 2019 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
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