LG 32LK610BPTB User manual

P/NO : MFL70522603 (1802-REV00)
CHASSIS : LB84J
MODEL : 32LK610BPTB
32LK610BPVA
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
LED TV
SERVICE MANUAL
CONFIDENTIAL
Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.

- 2 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
CONTENTS
CONTENTS .............................................................................................. 2
SAFETY PRECAUTIONS ........................................................................ 3
SERVICING PRECAUTIONS ................................................................... 4
SPECIFICATION ...................................................................................... 6
SOFTWARE UPDATE .............................................................................. 9
BLOCK DIAGRAM ................................................................................. 10
EXPLODED VIEW .................................................................................. 18
DISASSEMBLY GUIDE .......................................................................... 20
TROUBLE SHOOTING GUIDE ................................................ APPENDIX

- 3 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
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
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 MΩ and 5.2 MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check.
Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each 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 - 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 conict between the
following servicing precautions and any of the safety precautions
on page 3 of this publication, always follow the safety precau-
tions. 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 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 discharg-
ing 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 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 sol-
der 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 elec-
trically 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 mate-
rial to the chassis or circuit assembly into which the device will
be installed.
CAUTION: Be sure no power is applied to the chassis or cir-
cuit, 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 appropri-
ate 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 - 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 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 remain-
ing 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 when-
ever 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 - 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 LB84J
chassis.
2. Requirement for Test
Each part is tested as below without special notice
(1) Operating Temperature : 0 °C to 40 °C
(2) Operating Humidity : Less than 80%
(3) Storage Temperature : -20 °C to 60 °C
(4) Storage Humidity : Less than 85%
(5) Power Voltage
: Standard input voltage (AC 100~240V~, 50/60Hz)
Standard Voltage of each product is marked by models
(6) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM .
(7) The receiver must be operated for about 5 minutes prior to
the adjustment
3. Test method
(1) Performance: LGE TV test method followed
(2) Demanded other specification
- Safety : CE, IEC specification
- EMC : CE, IEC
4. Model General Specification
No. Item Specication Remarks
1 Market Asia, Oceania, Africa, Middle East
2 Television system
(1) Digital TV : DVB-T/T2, DVB-C, DVB-S/S2
(2) Analogue TV : PAL B/B, PAL B/G, PAL D/K, PAL-I,
SECAM B/G, SECAM D/K, NTSC-M
3 Channel Storage ATV & DVB-T/T2 : 2,000EA,
DVB-S/S2 : 6,000EA
4 Receiving system Analog : Upper Heterodyne
Digital : COFDM, QAM
► 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 (Model : *T-T* (Only T2 Model))
- 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
5 Video Input RCA PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC, PAL60
6 Component Input Y/Pb/Pr
7 Audio Input DVI Audio, Component, AV
8 HDMI Input HDMI1-DTV, HDMI2-DTV, HDMI3-DTV PC(HDMI Ver. 1.4), Support HDCP
9 USB Input For My Media(Movie/Photo/Music List) or For SVC
10 LAN Ethernet Connect
11 PCMCIA Card Slot PCMCIA slot * Only **LK54/LK55/57/61**PV*
12 Head phone out Antenna, AV, Component, HDMI1/2, USB1/2
13 SPDIF out SPDIF out

- 7 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
5. External Input Support Format
5.1. Component (Y, PB, PR)
No. Resolution H-freq(kHz) V-freq(Hz) Proposed
1 720×480 15.73 59.94 SDTV, DVD 480i
2 720×480 15.75 60.00 SDTV, DVD 480i
3 720×480 31.47 59.94 480p
4 720×480 31.50 60.00 480p
5 720×576 15.62 50.00 SDTV, DVD 625 Line
6 720×576 31.25 50.00 HDTV 576p
7 1280×720 37.50 50.00 HDTV 720p
8 1280×720 44.96 59.94 HDTV 720p
9 1280×720 45.00 60.00 HDTV 720p
10 1920×1080 28.12 50.00 HDTV 1080i
11 1920×1080 33.72 59.94 HDTV 1080i
12 1920×1080 33.75 60.00 HDTV 1080i
13 1920×1080 56.25 50.00 HDTV 1080p
14 1920×1080 67.43 59.94 HDTV 1080p
15 1920×1080 67.50 60.00 HDTV 1080p

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Only training and service purposes.
5.2. HDMI input
(1) DTV mode
No. Resolution H-freq(kHz) V-freq.(kHz) Proposed Remarks
1640*480 31.46 59.94 SDTV 480P
2648*480 31.50 60.00 SDTV 480P
3720*480 15.73 59.94 SDTV, DVD 480I(525I)
Spec. out but display4 720*480 15.75 60.00 SDTV, DVD 480I(525I)
5720*576 15.62 50.00 SDTV, DVD 576I(625I) 50Hz
6720*480 31.47 59.94 SDTV 480P
7720*480 31.50 60.00 SDTV 480P
8720*576 31.25 50.00 SDTV 576P
91280*720 37.50 50.00 HDTV 720P
10 1280*720 44.96 59.94 HDTV 720P
11 1280*720 45.00 60.00 HDTV 720P
12 1920*1080 28.12 50.00 HDTV 1080I
13 1920*1080 33.72 59.94 HDTV 1080I
14 1920*1080 33.75 60.00 HDTV 1080I
15 1920*1080 26.97 23.97 HDTV 1080P
16 1920*1080 27.00 24.00 HDTV 1080P
17 1920*1080 33.71 29.97 HDTV 1080P
18 1920*1080 33.75 30.00 HDTV 1080P
19 1920*1080 56.25 50.00 HDTV 1080P
20 1920*1080 67.43 59.94 HDTV 1080P
21 1920*1080 67.50 60.00 HDTV 1080P
(2) PC mode
No. Resolution H-freq(kHz) V-freq.(kHz) Proposed Remarks
1 640 x 350 @70Hz 31.46 70.09 EGA
2 720 x 400 @70Hz 31.46 70.08 DOS
3 640 x 480 @60Hz 31.46 59.94 VESA(VGA)
4 800 x 600 @60Hz 37.87 60.31 VESA(SVGA)
5 1024 x 768 @60Hz 48.36 60.00 VESA(XGA)
6 1152 x 864 @60Hz 54.34 60.05 VESA
7 1280 x 1024 @60Hz 63.98 60.02 VESA(SXGA) FHD only
8 1360 x 768 @60Hz 47.71 60.01 VESA(WXGA)
9 1920 x 1080 @60Hz 67.50 60.00 WUXGA(CEA 861D) FHD only

- 9 - 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.
(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.
(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.
2. NSU DOWNLOAD
(This Function is needed to connect to the internet.)
(1) Menu → All Settings → General → About This TV
(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) Turn OFF the TV and On. Check the updated SW Version
and Tool Option.

- 10 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
BLOCK DIAGRAM
1. MAIN
Main IC
Audio AMP
Digital Demod
IF (+/-)
IR / KEY
HDMI MUXLVDS
USB
SPDIF OUT
ETHERNET
USB2 OCP
1.5A
HDMI1
(ARC)
REAR
OPTIC
LAN
51P/30P
WIFI
SUB ASS
Y
USB_WIFI
Tuner
HDMI3
SIDE
CVBS/YPbPr
AV/COMP
REAR
I2S
I2C I2C
I2C
Analog Demod
USB1 OCP
1.5A
HDMI2
CVBS,SIF
DDR3 1066 4Gb(256M x16)
EEPROM (256Kb)
Flash (8Mb)
DDR3 1066 4Gb(256M x16)
eMMC (8GB)
X_TAL
24MHz
(LK57 OPT)
(LK57 OPT)

- 11 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
2. I2C
+3.3V_Normal
3.3KΩ
3.3KΩ
+3.3V_Normal
TUNER (Demod)
1.8KΩ
+3.3V_TU
33Ω
Main IC
P4001
Sub Assy(Eye module)
33Ω IC6900
LNB
18pF
Cap Ready
0xCA
0x10
Device
address
I2C_SCL1: K21[SCKM0]
I2C_SDA1: L22[SDAM0]
I2C_SCL_EYE: J22[SCKM4]
I2C_SDA_EYE: K23[SDAM4]
I2C_SCL4: AE3[SCKM1]
I2C_SDA4: AD3[SDAM1]
I2C_SCL2: K22[SCKM2]
I2C_SDA2: L21[SDAM2] Tuner
2.7KΩ
+3.3V_TU
56Ω
100pF
0xC0
IC5600
NTP7515(AMP)
0x54
100 Ω
33pF
I2C_SCL0: AA2[DDCDD_CK]
I2C_SDA0: AA3[DDCDD_DA]
IC100
NVRAM 33Ω
0xA0
3.3KΩ
+3.4V_ST
100Ω

- 12 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
3. POWER
13V
13V
1.1V_CORE
DCDC 6A
3.4V ST-BY 4A
DCDC
5V Normal
DCDC 4A
WIFI
Panel
LNB(EU option)
MICOM/IR/ETC
0.2A
0.5A
1A
0.15A
Audio 20W2ch
Tuner
0.25A
3A
Division Vout Vi Io
DC DC
3.5V_ST 13.2V 4A
1.1V_Core 13.2V 6A
5V_Normal 13.2V 4A
1.5V_DDR 3.4V 3A
LDO
1.2V Demod 3.4V 2A
1.8V_EMMC 3.4V 1A
[17Y M3 DCDC / LDO List ]
1.8V_EMMC LDO
1.2V Tuner
LDO 2A
2.55A(CH)
FET
Normal
SOC-M2R
0.15A
0.2A
0.55A
0.32A
0.47A
USB 2
1.3A
49”: 0.58A
*49” ,
• AT : 2.0A
• EU : 3.3A
• CH : 2.15A
1.5V_DDR
DCDC 3A
:
SOC-M2R
0.1A

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Only training and service purposes.
4. TUNER
SCL2
SDA2
AAD_ADC_SIF
Tuner
B2[+3.3V_DEMOD]11
IF_N
IF_P
I_P_TU
I_N_TU
Q_N_TU
Q_P_TU
+3.3V_TU
[SCL_RF] 1
[SDA_RF] 2
[SIF] 6
[IF_AGC_S] 4
[IF_AGC] 5
CVBS
DTV/Satellite IF Signal
10 Ω
TU_CVBS
IF_AGC
CVBS CVBS
IF_AGC_S
IFAGC
+3.3V_TU
2.7KΩ
Main
IC
B1[+3.3V_RF]3
IF_N
IF_P
I_P_TU
I_N_TU
Q_N_TU
Q_P_TU

- 14 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
5. AUDIO OUT
SPDIF_OUT
IC5600
AMP
LPF
IEC958OUT
Tuner
TR BUF AAD_ADC_SIF
TUNER_SIF
GPIO23 AMP_RESET_N
JK3400
LPF
Front_L
Front_R
DACSCK/GPIO81
Main IC
SDA0/GPIO138
SCL0/GPIO139
AUD_LRCK
AUD_LRCH
I2C_SDA_0_AMP1 / I2C_SCL_0_AMP1
DACLRCH/GPIO82
DACLRCK
AUD_SCK

- 15 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
6. HDMI
HDMI2 (Rear) HDMI 2.0
CEC_REMOTE
IC101
Main IC
HDMI_ARC
HDMI1 (SIDE) with ARC
HDMI2.0
DDC_SCL_1
DDC_SDA_1
CEC Remote
DDC_SCL_2
DDC_SDA_2
CEC Remote
HDMI_CEC_MICOM Q3210
DDC_SCL_1
DDC_SDA_1
JK3202
JK3201
HDMI3 (Rear)
HDMI2.0
JK3203
DDC_SCL_3
DDC_SDA_3
CEC Remote
DDC_SCL_2
DDC_SDA_2
PHY0_ARC_OUT
DDC_SCL_3
DDC_SDA_3

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Only training and service purposes.
7. USB / WIFI / M-REMOTE
USB1(SIDE)
USB3.0_1_DM0
USB3.0_1_DP0
USB2(SIDE)
IC2304
5V / 6A
+5V_USB_1 +5V_USB_2
/USB_OCD2
USB_CTL2
USB_CTL2 /USB_OCD2
WIFI_DM
WIFI_DP
USB2_2_DM0 USB2_2_DP0
USB2.0
WIFI Combo
BT_RESET
BT_WAKEUP_DEVICE BT_WAKEUP_HOST
OCP
IC4302
OCP
IC4301
+5V_NORMAL
+5V_NORMAL
JK4300
JK4301
USB2.0
Main IC
USB2.0_2_DM1
USB2.0_2_DP1
+5V_NORMAL

- 17 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
8. LVDS 51 Pin INTERFACE
Main
IC
AGP_CTRL
P7200
TX A_0/1/2/3/CK
TX B_0/1/2/3/CK
PANEL_VCC
LVDS_SEL

- 18 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
LV1
200P
200T
400
200A
LED Array Ass’y
700
AR1
502
500
900
530
820 120
540
570
571
521
HP1
800
HS1
HW1
810
Stand Screw
ARC1
A10
EXPLODED VIEW (SET)
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.
IMPORTANT SAFETY NOTICE

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Only training and service purposes.
POL(Front) Panel
Ass’y
POL(Rear) Optical Sheet
Rear Side
200PPF 200PPR
200P
200PC 200SS
EXPLODED VIEW (MODULE)
MRC use only
* MRC : Module Repair Center
IMPORTANT NOTICE

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Only training and service purposes.
DISASSEMBLY GUIDE
1. Assemble Latch& Screw
(1) Side View
Assemble from top to bottom
(2)
Using AC socket & Chassis as centering guide
Please do not assembled press
curved portion (b)
bb
a
a
a
a
a
a
a a a a a a a a
Please press Latch Zone (a)
a
■ Press direction
- Oblique direction from the outer surface