LG 49SM8600PUA Schematic

CONFIDENTIAL
LED TV
SERVICE MANUAL
CHASSIS : UA92S
MODEL : 49SM8600PUA
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL71404402 (1902-REV00)
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.
CONTENTS
CONTENTS .............................................................................................. 2
SAFETY PRECAUTIONS ........................................................................ 3
SERVICING PRECAUTIONS ................................................................... 4
SPECIFICATION ....................................................................................... 6
SOFTWARE UPDATE ........................................................................... 10
BLOCK DIAGRAM ................................................................................. 12
EXPLODED VIEW .................................................................................. 21
ASSEMBLY / DISASSEMBLY ................................................................ 23
TROUBLE SHOOTING GUIDE ................................................ APPENDIX
- 2 -
Copyright © LG Electronics Inc. All rights reserved. Only for 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
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 M 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.
Ω and 5.2 MΩ.
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
- 3 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conict between the
following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power source before;
a. Removing or reinstalling any component, circuit board mod-
ule or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug or
other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic
capacitor in the receiver. CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an 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 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 eas­ily 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 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 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 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 oor can generate static electricity suf­cient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500 °F to 600 °F.
2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and well tinned.
4. Thoroughly clean the surfaces to be soldered. Use a mall wire­bristle (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 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 for training and service purposes.
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent at against the 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. 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.
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 for 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 UA92S chassis.
2. Test condition
Each part is tested as below without special appointment. (1) Temperature: 25 °C ± 5 °C, CST: 40 °C ± 2 °C (2) Relative Humidity: 65 % ± 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 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. General Specification
No Item Specication Remark
1 Market North America
2 Broadcasting system ATSC / NTSC-M, 64 & 256 QAM
3 Available Channel VHF : 02~13
UHF : 14~69
DTV : 02-69
CATV : 01~135
CADTV : 01~135
4 Receiving system Digital : ATSC, 64 & 256 QAM
Analog : NTSC-M
5 Video Input NTSC-M Rear (1EA)
6 Component Input Y/Cb/Cr, Y/ Pb/Pr Rear (1EA)
7 HDMI Input UHD HDMI 1 PC / DTV format Side, Support 6Gbps
HDMI 2 PC / DTV format Side, Support 6Gbps, Support ARC
HDMI 3 PC / DTV format Rear, Support 6Gbps
HDMI 4 PC / DTV format Rear, Support 6Gbps
FHD HDMI 1 PC / DTV format Side, Support 3Gbps, Support ARC
HDMI 2 PC / DTV format Rear, Support 3Gbps
HDMI 3 PC / DTV format Rear, Support 3Gbps
8 Audio Input AV Audio / DVI Audio AV and DVI use same jack ;
9 SPDIF out(1EA) Optical Audio out Rear (1EA),
10 HeadPhone HeadPhone out
11 USB Input EMF, DivX HD, For SVC (download) JPEG, MP3, DivX HD
- 6 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
5. External Input Support Format
5.1. HDMI Input (PC/DTV)
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remarks
PC
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 Support to HDMI-PC
9 1920*1080 67.5 60 158.4 WUXGA(Reduced
Blanking)
10 1920*1080 135 120 297
11 3840*2160 54 24 297 UDTV 2160P
12 3840*2160 56.25 25 297 UDTV 2160P
13 3840*2160 67.5 30 297 UDTV 2160P
14 3840*2160 112.5 50 594 UDTV 2160P
15 3840*2160 135 60 594 UDTV 2160P
16 3840*2160 225 100 1188 UDTV 2160P
17 3840*2160 270 120 1188 UDTV 2160P
18 4096*2160 53.95 23.97 296.7 UDTV 2160P
19 4096*2160 54 24 297 UDTV 2160P
20 4096*2160 56.25 25 297 UDTV 2160P
21 4096*2160 67.5 30 297 UDTV 2160P
22 4096*2160 112.5 50 594 UDTV 2160P
23 4096*2160 135 60 594 UDTV 2160P
24 4096*2160 225 100 1188 UDTV 2160P
25 4096*2160 270 120 1188 UDTV 2160P
26 2560*1440 88.78 60 241.5 3K
27 2560*1440 183 120 497.7 3K
28 7680*4320 107.89 23.98 1188 8K 8K Model Only
29 7680*4320 108 24 1188 8K 8K Model Only
30 7680*4320 110 25 1188 8K 8K Model Only
31 7680*4320 131.87 29.97 1188 8K 8K Model Only
32 7680*4320 132 30 1188 8K 8K Model Only
33 7680*4320 220 50 2376 8K 8K Model Only
34 7680*4320 263.74 59.94 2376 8K 8K Model Only
35 7680*4320 264 60 2376 8K 8K Model Only
- 7 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remarks
DTV
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 HDTV 1080P
23 1920*1080 134.86 119.88 296.7 HDTV 1080P
24 1920*1080 135 120 297 HDTV 1080P
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 When HDMI1,2,3,4
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 270 120 1188 UDTV 2160P
35 4096*2160 53.95 23.98 296.7 UDTV 2160P
36 4096*2160 54 24 297 UDTV 2160P
37 4096*2160 56.25 25 297 UDTV 2160P
38 4096*2160 61.43 29.97 296.7 UDTV 2160P
39 4096*2160 67.5 30 297 UDTV 2160P
Spec. out but display
UHD DEEP COLOUR
ON
- 8 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remarks
DTV
40 4096*2160 112.5 50 594 UDTV 2160P When HDMI1,2,3,4
41 4096*2160 134.86 59.94 593.4 UDTV 2160P
42 4096*2160 135 60 594 UDTV 2160P
UHD DEEP COLOUR
ON
43 4096*2160 225 100 1188 UDTV 2160P
44 4096*2160 270 120 1188 UDTV 2160P
45 2560*1440 88.78 60 241.5 3K non-standard
46 2560*1440 183 120 497.7 3K non-standard
47 7680*4320 107.89 23.98 1188 8K 8K Model Only
48 7680*4320 108 24 1188 8K 8K Model Only
49 7680*4320 110 25 1188 8K 8K Model Only
50 7680*4320 131.87 29.97 1188 8K 8K Model Only
51 7680*4320 132 30 1188 8K 8K Model Only
52 7680*4320 220 50 2376 8K 8K Model Only
53 7680*4320 263.74 59.94 2376 8K 8K Model Only
54 7680*4320 264 60 2376 8K 8K Model Only
5. External Input Support Format
5.2. Component Input
No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed
1 720*480i 15.73 59.94 13.5 SDTV, DVD 480I(525I)
2 720*480i 15.75 60 13.514 SDTV, DVD 480I(525I)
3 720*576i 15.625 50 13.5 SDTV, DVD 576I(625I) 50Hz
4 720*480p 31.47 59.94 27 SDTV 480P
5 720*480p 31.5 60 27.027 SDTV 480P
6 720*576p 31.25 50 27 SDTV 576P 50Hz
7 1280*720 44.96 59.94 74.176 HDTV 720P
8 1280*720 45 60 74.25 HDTV 720P
9 1280*720 37.5 50 74.25 HDTV 720P 50Hz
10 1920*1080 28.125 50 74.25 HDTV 1080I 50Hz,
11 1920*1080 33.72 59.94 74.176 HDTV 1080I
12 1920*1080 33.75 60 74.25 HDTV 1080I
13 1920*1080 56.25 50 148.5 HDTV 1080P
14 1920*1080 67.43 59.94 148.5 HDTV 1080P
15 1920*1080 67.5 60 148.5 HDTV 1080P
- 9 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
SOFTWARE UPDATE
1. USB
(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
- 10 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
2. NSU
(This Function is needed to connect to the internet)
(Case 1) Allow Automatic Updates Toggle Item
(1) Menu -> All Settings -> General -> About This TV
(2) Silent Update_Pop-up When the download and install of the update is complete, the TV issues a Toast notification letting the user know that the update is complete and a reboot is required.
(3) If you want to see the update progress, go to [Menu -> All
Settings -> General -> About This TV]
(Case 2) NOT Allow Automatic Updates Toggle Item
(1) Menu -> All Settings -> General -> About This TV
(2) TV will automatically check for updates when every TV
boots When an updated is detected, the TV will issue an Alert letting the user know that an update is available.
(4) If you want to cancel update, click (1.1) CANCEL UPDATE
(5) [NO] : Keep updating [Yes] : Cancel updating
(3) [Yes] : Initiate the download and install of the update
[No] : Close the pop-up. The Alert will come back again when TV checks again.
(4) The following pop up window appears.
(5) [CHECK NOW] : Go to the About this TV setting page [CLOSE] : Close the pop-up
- 11 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
1. Main IC
MAIN Audio AMP
(NTP7519)
Main IC
IF+, IF-
OPTIC
LAN
HDMI1 HDMI 2.0
EEPROM(NVRAM)
(256Kb)
PHY3_RX0N
Air/
Cable
TUNER
(Air/Cable)
USB1 (2.0)
eMMC
(4GB)
Sub Micom
(RENESAS
R5F100GEAFB)
P_TS(Korea / Japan / China)
X_TAL
24MHz
X_TAL
32.768KHz
I2S Out
I2C 0
I2C 4
R
E
A
R
YPbPr
SPDIF OUT
ETHERNET
I2C 1
SUB
ASSY
IR / KEY
WIFI/BT Combo
USB_WIFI
CVBS
HDMI3 HDMI 2.0
USB2 (2.0)
RS232C/HP
HDMI2(ARC) HDMI 2.0
AV
EPI
OCP
OCP
USB2_0
USB2_2
PHY2_RX0N
PHY1_RX0N
I2C6
SIF
HDMI4 HDMI 2.0
PHY0_RX0N
PMIC
Sub PMIC
CVBS/COMP
M0
M1
DDR3 2133
512MB
DDR3 2133
512MB
DDR3 2133
512MB
DDR3 / 2133
512MB
I2C
5
USB3 (2.0)
OCP
USB2_1
Depend on Region
Side
Rear
Depend on Region
Depend on Region
Side
Rear
I_P, I_N, Q_P, Q_N
KR
US
BLOCK DIAGRAM
- 12 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
2. I2C
SCL0
SDA0
100Ω
3.3KΩ
Main IC
+3.3V_NORMAL
3.3KΩ
33Ω
IC102
NVRAM
+3.3V_NORMAL
IC5300
NTP7519
SCL2
SDA2
TUNER
SCL4
SDA4
33pF
SCL5
SDA5
SCL1
SDA1
IC3000
MICOM
33Ω
3.3KΩ
+3.3V_NORMAL
3.3KΩ
+3.3V_NORMAL
IC8000
SW50212
33Ω
IC8100
RT5094
33Ω
47pF
+3.3V_TU
1.8KΩ(US)
1.2KΩ (KR)
- 13 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
3. Power
LDO DCDC
+
D13V
+5V_NORMAL
IC1600 / 8A
TPS51396
IC1400 / 3A
T
PS563208
IC1100
T
PS259271
IC1700 / 3. 5A
R
T6264A
NTP7519
+3.3V_NORMAL
+3. 5V_ST
+1.8V_IO
IC2100 / 3A
T
PS563208
+0.9V_CPU
IC2000 / 12A
T
PS56C215RNNR
+0.9V_CORE
USB1 (2.0)
USB2 (2.0)
PANEL
MICOM
IR_KEY
ETHERNET
WIFI
+3.5V_WOL
WIFI_EN
+0.9V_CPU
+0.9V_CORE
Main
IC1800 / 3A
T
PS563208
SWITCH
+0.9V_DDR & C4TX
NVRAM
H/ P AMP
1
.1/ 1.2V_DEMOD
TUNER
NTP7519
MAX3232CDR
USB1 (2.0)
DDR3
1
.5V_DDR
CI_CAM
IC6900 / 2A
T
J4320GDP- ADJ
IC2200 / 3A
TPS563208
Main
Main
IC2300 / 2A
T
J4320GDP- ADJ
Main
Source
IC1503 / 3A
T
LV62585
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
4. Tuner
SCL5
S
DA5
D
NP DNN
A
A
Tuner
B2[ +3.3V_DEMOD] 11
+1. 2V_TU
[ SCL_RF] 1
[
SDA_RF] 2
[
[ RESET_D
FILTER
33 Ω
IF_P TU
IF_
TU_CVBS
I
F_AGC
T
ADC I INP
I
NN
/ TU_RESET1
GP
C
IFAGC
+3.3V_TU
1.2KΩ
Main IC
B1[ +3.3V_RF] 3
FE_D
FE_D
FE_D
FE_DEMOD1_TS_DATA [ 0- 7]
TPTPTP
0
1 2 3
T
P 4 TP 5 TP 6 TP 7
A
A
TDJN- H701F/TDJN- H751F
(F/ NIM case only)
A
A
A
A
TDJS- H601F(H/ NIM case only)
/
[ IF_AGC] 5
COMON
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
5. Video/Audio
Main IC
CVBS_IN2
Tuner
Jack Side
SoC Side
JK3401
AV_CVBS_IN / AV_L_IN / AV_R_IN
AV1_CVBS_IN_SOC
TU_SIF_TU, IF_P/N_TU
AAD_ADC_SIF, DMD_TADC_INP, DMD_TADC_INN
TU_SIF, TADC_I_INN/INP
Y1_IN
COMP1_Y_IN_SOC
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
SPDIF_OUT
IC5300
F
ront AMP
N
TP7519
LPF
IEC958OUT
Tune
r
TR BUF
A
AD_ADC_SIF
HP_LOUT / HP_ROUT
H
EAD PHONE
LPF
AUDA_OUTL_CH1
A
UDA_OUTR_CH1
TUNER_SIF
IC3000
MICOM
AMP_MUTE
GPIO23
AMP_RESET_N
JK3403
JK6200
LPF
Front_L
Front_R
DACSCK/ GPIO81
Main IC
AUAD_R_CH1_IN
AUAD_L_CH2_IN
SDA0/GPIO138
S
CL0/ GPIO139
AUD_LRCK
A
UD_LRCH
IC6300
E
AN62668301
I2C_SDA_0_AMP1 / I2C_SCL_0_AMP1
DACLRCH/ GPIO82
D
ACLRCK
AUD_SCK
S
IDE_HP_MUTE
JK3401
6. Audio Out
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
SPDIF_OUT
IC5300
F
ront AMP
N
TP7519
LPF
IEC958OUT
Tune
r
TR BUF
A
AD_ADC_SIF
TUNER_SIF
IC3000
MICOM
AMP_MUTE
GPIO23
AMP_RESET_N
JK3403
LPF
Front_L
Front_R
DACSCK/GPIO81
Main IC
AUAD_R_CH1_IN
AUAD_L_CH2_IN
SDA0/GPIO138
S
CL0/ GPIO139
AUD_LRCK
A
UD_LRCH
I2C_SDA_0_AMP1 / I2C_SCL_0_AMP1
DACLRCH/ GPIO82
D
ACLRCK
AUD_SCK
JK3401
7. HDMI
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
HDMI4 (SIDE)
H
DMI 2.0
HDMI2 (SIDE) with ARC
H
DMI 2.0
C
EC_RE
MOTE
RENESAS
MICOM(IC3000)
M
ain IC
HDMI_ARC
X- Tal(X3000)
3
2.768kHz
HDMI1 (SIDE)
H
DMI2.0
DDC_SCL_1
D
DC_SDA_1
T
MDS Link 8bits
DDC_SCL_2
D
DC_SDA_2
T
MDS Link 8bits
DDC_SCL_4
D
DC_SDA_4
* TMDS Link 8bits = TMDS DATA 6bits(DATA0,1,2)+ TMDS CLK 2bits
TMDS Link 8bits
HDMI_CEC_MICOM
Q3001
DDC_SCL_1
DDC_SDA_1
J
K3104
J
K3102
J
K3101
HDMI3
(
SIDE)
H
DMI2.0
JK3103
DDC_SCL_3
D
DC_SDA_3
T
MDS Link 8bits
DDC_SCL_2
DDC_SDA_2
PHY0_ARC_OUT
DDC_SCL_3
DDC_SDA_3
DDC_SCL_4
DDC_SDA_4
8. USB / WIFI / M-REMOTE / UART
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
TX 6lane
Main
M
ain IC
I2C
FCIC_Data(EPI) / Non(CEDS)
P7801
P
7800
TX
Lock_In
PMIC
IC8000
Sub PMIC
IC8100
GMA(8)/CLK(8) - EPI
GMA(8)/CLK(10) - CEDS
VCOM
VCOM
GMA(8)/CLK(8) - EPI
GMA(8)/CLK(10) - CEDS
9. EPI 68Pin Interface
- 20 -
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
LV1
LV2
200A
AR2
A9
A10
700
540
521
530
121
120
800
570
500
411
400
900
910
HP1
HS1
HW1
200P
911
EXPLODED VIEW (SET)
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.
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
POL(Front) Panel
Ass’y
POL(Rear) Optical Sheet
Rear Side
200PPF
200PPR
200P
200PC 200SL1 200SR1
EXPLODED VIEW (MODULE)
IMPORTANT NOTICE
MRC use only
* MRC : Module Repair Center
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
ASSEMBLY / DISASSEMBLY GUIDE (SET)
[Disassembly Guide]
(1) Lay the TV Set on a at pad and Disassemble Stand Screw 4ea.
(2) Disassemble B/C Screw (3) Prepare B/C remove after Checking the Module Holder Position.
Screw : 4ea
65/55”
49"”
Screw : 12ea
Holder : 65/55” 8ea, 49” 6ea
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Copyright © LG Electronics Inc. All rights reserved. Only for 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.
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
(6) Hold the center of the back cover as shown in the picture and slide it upwards.
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
[Assembly Guide]
(1) Place the B/C on the Module Assy and push the Holder Position (2) Check 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”
Screw : 12ea
Holder : 65/55” 8ea, 49” 6ea
(4) Assemble Stand Screw 4ea
49"”
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Screw : 4ea
Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
[ Module Disassemble ]
(1) Disassemble of Cover Shield
DISASSEMBLY GUIDE (MOUBLE)
Disassemble the Screws
Disassemble the source PCB from the guide
Screw(M3*L3.5) 65inch 10ea, 55inch 7ea, 49inch 7ea
(2) Disassemble of Guide panel screw
UP/RIGHT/LEFT Tapping Screw(M2*L4) 65inch 18ea, 55inch 17ea, 49inch 15ea
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
3. Disassemble of Case Top screw.
- Screw(M3*L4) 65inch 9ea, 55inch 7ea, 49inch 5ea
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
[Panel assy (with Guide pael) Disassemble]
About 350mm About 350mm
About 40mm
About 40mm
4. Disassemble of screw(M3*L3.5) 65inch 4ea, 55inch 3ea, 49inch 2ea
5. Disassemble Hooks. ( UP 2ea Left/Right each 1ea)
Disassemble Hooks.
6. Panel and Guide Panel disassembly (using absorber)
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
[BLU Disassemble]
LED
LED
7. Removal of Sheets
8. Removal of LGP
9. Removal of Reflector
10. Removal of LED Housing Assy
Screw(Powerlok type, M3*L5) 65inch 23ea, 55inch 14ea, 49inch 13ea
The Guide of BLU/LCM assemble
-> The module assembly can be performed in reverse disassembly order.
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Copyright © LG Electronics Inc. All rights reserved. Only for training and service purposes.
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