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LED TV
SERVICE MANUAL
CHASSIS : LD93B
MODEL : 28TN515S 28TN515S-PZ
28TN515S-WZ
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL70446516 (2003-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.
Copyright © 2020 LG Electronics Inc. All rights reserved. Only training and service purposes.
CONTENTS
CONTENTS ............................................................................................... 2
SAFETY PRECAUTIONS.......................................................................... 3
SERVICING PRECAUTIONS..................................................................... 4
SPECIFICATION........................................................................................ 6
SOFTWARE UPDATE.............................................................................. 11
BLOCK DIAGRAM................................................................................... 12
EXPLODED VIEW ................................................................................... 13
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 Do not use a line Isolation Transformer during this check.
power line. Use a transformer of adequate power rating as this Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
protects the technician from accidents resulting in personal injury between a known good earth ground (Water Pipe, Conduit, etc.)
from electrical shocks. and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
It will also protect the receiver and it's components from being with 1000 ohms/volt or more sensitivity.
damaged by accidental shorts of the circuitry that may be Reverse plug the AC cord into the AC outlet and repeat AC voltage
inadvertently introduced during the service operation. measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
If any fuse (or Fusible Resistor) in this TV receiver is blown, 0.5mA.
replace it with the specified. In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
When replacing a high wattage resistor (Oxide Metal Film Resistor, repaired before it is returned to the customer.
over 1W), keep the resistor 10mm away from PCB.
Leakage Current Hot Check circuit
Keep wires away from high voltage or high temperature parts.
AC Volt-meter
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed Good Earth Ground
such as WATER PIPE,
metallic parts of the cabinet, such as antennas, terminals, etc., to CONDUIT etc.
To Instrument's
be sure the set is safe to operate without damage of electrical exposed
0.15µF
shock. METALLIC PARTS
Leakage Current Cold Check(Antenna Cold Check) 1.5 Kohm/10W
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
When 25A is impressed between Earth and 2nd Ground
switch in the on position, connect one lead of ohm-meter to the AC for 1 second, Resistance must be less than 0.1
plug prongs tied together and touch other ohm-meter lead in turn to *Base on Adjustment standard
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 1MΩ and 5.2MΩ.
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 unit under test.
manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES
SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as
NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or
following servicing precautions and any of the safety precautions on exposure of the assembly.
page 3 of this publication, always follow the safety precautions. 3. Use only a grounded-tip soldering iron to solder or unsolder ES
Remember: Safety First. devices.
4. Use only an anti-static type solder removal device. Some solder
General Servicing Precautions removal devices not classified as "anti-static" can generate
1. Always unplug the receiver AC power cord from the AC power electrical charges sufficient to damage ES devices.
source before; 5. Do not use freon-propelled chemicals. These can generate
a. Removing or reinstalling any component, circuit board electrical charges sufficient to damage ES devices.
module or any other receiver assembly. 6. Do not remove a replacement ES device from its protective
b. Disconnecting or reconnecting any receiver electrical plug or package until immediately before you are ready to install it.
other electrical connection. (Most replacement ES devices are packaged with leads
c. Connecting a test substitute in parallel with an electrolytic electrically shorted together by conductive foam, aluminum foil
capacitor in the receiver. or comparable conductive material).
CAUTION: A wrong part substitution or incorrect polarity 7. Immediately before removing the protective material from the
installation of electrolytic capacitors may result in an leads of a replacement ES device, touch the protective material
explosion hazard. to the chassis or circuit assembly into which the device will be
installed.
2. Test high voltage only by measuring it with an appropriate high CAUTION: Be sure no power is applied to the chassis or circuit,
voltage meter or other voltage measuring device (DVM, and observe all other safety precautions.
FETVOM, etc) equipped with a suitable high voltage probe. 8. Minimize bodily motions when handling unpackaged
Do not test high voltage by "drawing an arc". replacement ES devices. (Otherwise harmless motion such as
3. Do not spray chemicals on or near this receiver or any of its the brushing together of your clothes fabric or the lifting of your
assemblies. foot from a carpeted floor can generate static electricity
4. Unless specified otherwise in this service manual, clean sufficient to damage an ES device.)
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable General Soldering Guidelines
non-abrasive applicator; 10% (by volume) Acetone and 90% (by 1. Use a grounded-tip, low-wattage soldering iron and appropriate
volume) isopropyl alcohol (90%-99% strength) tip size and shape that will maintain tip temperature within the
CAUTION: This is a flammable mixture. range or 500 ˚F to 600 ˚F.
Unless specified otherwise in this service manual, lubrication of 2. Use an appropriate gauge of RMA resin-core solder composed
contacts in not required. of 60 parts tin/40 parts lead.
5. Do not defeat any plug/socket B+ voltage interlocks with which 3. Keep the soldering iron tip clean and well tinned.
receivers covered by this service manual might be equipped. 4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
6. Do not apply AC power to this instrument and/or any of its bristle (0.5 inch, or 1.25cm) brush with a metal handle.
electrical assemblies unless all solid-state device heat sinks are Do not use freon-propelled spray-on cleaners.
correctly installed. 5. Use the following unsoldering technique
7. Always connect the test receiver ground lead to the receiver a. Allow the soldering iron tip to reach normal temperature.
chassis ground before connecting the test receiver positive (500 ˚F to 600 ˚F)
lead. b. Heat the component lead until the solder melts.
Always remove the test receiver ground lead last. c. Quickly draw the melted solder with an anti-static, suction-
8. Use with this receiver only the test fixtures specified in this type solder removal device or with solder braid.
service manual. CAUTION: Work quickly to avoid overheating the circuit
CAUTION: Do not connect the test fixture ground strap to any board printed foil.
heat sink in this receiver. 6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
Electrostatically Sensitive (ES) Devices (500 ˚F to 600 ˚F)
Some semiconductor (solid-state) devices can be damaged easily b. First, hold the soldering iron tip and solder the strand against
by static electricity. Such components commonly are called the component lead until the solder melts.
Electrostatically Sensitive (ES) Devices. Examples of typical ES c. Quickly move the soldering iron tip to the junction of the
devices are integrated circuits and some field-effect transistors and component lead and the printed circuit foil, and hold it there
semiconductor "chip" components. The following techniques only until the solder flows onto and around both the
should be used to help reduce the incidence of component component lead and the foil.
damage caused by static by static electricity. CAUTION: Work quickly to avoid overheating the circuit
1. Immediately before handling any semiconductor component or board printed foil.
semiconductor-equipped assembly, drain off any electrostatic d. Closely inspect the solder area and remove any excess or
charge on your body by touching a known earth ground. splashed solder with a small wire-bristle brush.
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
-4- Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
IC Remove/Replacement CAUTION: Maintain original spacing between the replaced
Some chassis circuit boards have slotted holes (oblong) through component and adjacent components and the circuit board to
which the IC leads are inserted and then bent flat against the prevent excessive component temperatures.
circuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with Circuit Board Foil Repair
boards using the familiar round hole, use the standard technique Excessive heat applied to the copper foil of any printed circuit
as outlined in paragraphs 5 and 6 above. 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
Removal following guidelines and procedures should be followed whenever
1. Desolder and straighten each IC lead in one operation by gently this condition is encountered.
prying up on the lead with the soldering iron tip as the solder
melts. At IC Connections
2. Draw away the melted solder with an anti-static suction-type To repair a defective copper pattern at IC connections use the
solder removal device (or with solder braid) before removing the following procedure to install a jumper wire on the copper pattern
IC. side of the circuit board. (Use this technique only on IC
Replacement connections).
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and 1. Carefully remove the damaged copper pattern with a sharp
solder it. knife. (Remove only as much copper as absolutely necessary).
3. Clean the soldered areas with a small wire-bristle brush. 2. carefully scratch away the solder resist and acrylic coating (if
(It is not necessary to reapply acrylic coating to the areas). used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper wire and
"Small-Signal" Discrete Transistor carefully crimp it around the IC pin. Solder the IC connection.
Removal/Replacement 4. Route the jumper wire along the path of the out-away copper
1. Remove the defective transistor by clipping its leads as close as pattern and let it overlap the previously scraped end of the good
possible to the component body. copper pattern. Solder the overlapped area and clip off any
2. Bend into a "U" shape the end of each of three leads remaining excess jumper wire.
on the circuit board.
3. Bend into a "U" shape the replacement transistor leads. At Other Connections
4. Connect the replacement transistor leads to the corresponding Use the following technique to repair the defective copper pattern
leads extending from the circuit board and crimp the "U" with at connections other than IC Pins. This technique involves the
long nose pliers to insure metal to metal contact then solder installation of a jumper wire on the component side of the circuit
each connection. board.
Power Output, Transistor Device 1. Remove the defective copper pattern with a sharp knife.
Removal/Replacement Remove at least 1/4 inch of copper, to ensure that a hazardous
1. Heat and remove all solder from around the transistor leads. condition will not exist if the jumper wire opens.
2. Remove the heat sink mounting screw (if so equipped). 2. Trace along the copper pattern from both sides of the pattern
3. Carefully remove the transistor from the heat sink of the circuit break and locate the nearest component that is directly
board. connected to the affected copper pattern.
4. Insert new transistor in the circuit board. 3. Connect insulated 20-gauge jumper wire from the lead of the
5. Solder each transistor lead, and clip off excess lead. nearest component on one side of the pattern break to the lead
6. Replace heat sink. of the nearest component on the other side.
Carefully crimp and solder the connections.
Diode Removal/Replacement CAUTION: Be sure the insulated jumper wire is dressed so the
1. Remove defective diode by clipping its leads as close as it does not touch components or sharp edges.
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.
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.
-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 3.Test method
This spec sheet is applied to the LD93B chassis. 1) Performance : LGE TV test method followed
2) Demanded other specification
- Safety : CE,IEC specification
- EMC : CE,IEC specification
2. 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 : 65 % ± 10 %
3) Power Voltage : Standard input voltage
(100 V - 240 V ~, 50 / 60 Hz)
·S tandard Voltage of each products is marked by models
4) S pecification and performance of each parts are followed
each drawing and specification by part number in accord-
ance with BOM.
5) The receiver must be operated for about 5 minutes prior to
the adjustment.
4. Electrical Specification
No Item Specification Remarks
1 Market EU / CIS / MEA / OCEANIA / ASIA
2 Broadcasting 1) Digital TV : Market : EU / CIS
system Satellite DTV(DVB-S/S2)
Terrestrial(DVB-T/T2)
Cable(DVB-C)
2) Analogue TV
Terrestrial/Cable(PAL B/B,B/G, D/K, I ,
SECAM B/G, D/K, L )
1) Digital TV : Market : MEA / OCEANIA / ASIA (Depending on models)
Satellite DTV(DVB-S/S2)
Terrestrial(DVB-T/T2)
Cable(DVB-C)
2) Analogue TV
Terrestrial/Cable(PAL B/B,B/G, D/K, I ,
SECAM B/G, D/K, NTSC-M)
-6- Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
No Item Specification Remarks
3 Program cover- Digital TV Market : EU / CIS
age VHF III 174 ~ 230 Mhz
UHF IV 470 ~ 606 Mhz
UHF V 606 ~ 862 Mhz
S Band II 230 ~ 300 Mhz (Maximum number of storable programmes : 3000)
S Band III 300 ~ 470 Mhz (Maximum number of storable programmes : 3000)
DVB-S/S2 950 ~ 2150 Mhz (Maximum number of storable programmes : 6000)
DVB-C 46 ~ 890 Mhz (Maximum number of storable programmes : 3000)
Analogue TV
Analogue TV 46 ~ 862 Mhz (Maximum number of storable programmes : 3000)
Digital TV(Depending Market : MEA / OCEANIA / ASIA (Depending on models)
on models)
DVB-T/T2 VHF, UHF (Maximum number of storable programmes : 3000)
DVB-S/S2 C-Band,Ku-Band (Maximum number of storable programmes : 6000)
DVB-C (Maximum number of storable programmes : 3000)
Analogue TV
Analogue TV VHF,UHF,CATV (Maximum number of storable programmes : 3000)
4 Receiving "Analog : Upper Heterodyne * DVB-T
system Digital : COFDM(DVB-T) Only DVB-T - Guard Interval(Bitrate_Mbit/s)
Model 1/4, 1/8, 1/16, 1/32
Digital : COFDM(DVB-T/T2) Only DVB-T2 - Modulation : Code Rate
Model QPSK : 1/2, 2/3, 3/4, 5/6, 7/8
Digital : QAM" 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(Depending on models)
- 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(Depending on models)
- Symbolrate :
4.0Msymbols/s to 7.2Msymbols/s
- Modulation :
16QAM, 64-QAM, 128-QAM and 256-QAM
* DVB-S/S2(Depending on models)
-. 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 "
-7- Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
No Item Specification Remarks
5 Video Input PAL, SECAM, NTSC, PAL60 Rear(1EA), AV & Component Common
RCA
6 Component Y/Cb/Cr, Y/ Pb/Pr
Input
7 HDMI HDMI 1 PC / DTV Format Side, Support ARC
Input HDMI 2 PC / DTV Format Rear
8 Audio Input AV Audio / Component Audio / DVI Audio Rear(1EA, AV and DVI use same jack)
9 SPDIF Optical Audio out Rear(1EA)
Out(1EA)
10 USB Input(1EA) EMF, DivX HD, For SVC (download) JPEG, MP3, DivX HD
Side(1EA)
11 Ethernet Optical Audio out STP cable
Connect(1EA)
12 PCMCIA Card PCMCIA Slot Only EU/CIS
slot(1EA)
-8- Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
5. External Input Format
5.1. Component (Y, PB, PR)
No Resolution H-freq(kHz) V-freq(Hz) 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 15.62 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 28.12 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
5.2. HDMI
5.2.1. DTV mode
No Resolution H-freq(kHz) V-freq(Hz) 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 31.47 59.94 27 SDTV 480P
4 720*480 31.5 60 27.02 SDTV 480P
5 720*576 31.25 50 27 SDTV 576P
6 1280*720 37.5 50 74.25 HDTV 720P
7 1280*720 44.96 59.94 74.17 HDTV 720P
8 1280*720 45 60 74.25 HDTV 720P
9 1920*1080 28.12 50 74.25 HDTV 1080I
10 1920*1080 33.72 59.94 74.17 HDTV 1080I
11 1920*1080 33.75 60 74.25 HDTV 1080I
12 1920*1080 26.97 23.97 63.29 HDTV 1080P
13 1920*1080 27 24 63.36 HDTV 1080P
14 1920*1080 33.71 29.97 79.12 HDTV 1080P
15 1920*1080 33.75 30 79.2 HDTV 1080P
16 1920*1080 56.25 50 148.5 HDTV 1080P
17 1920*1080 67.43 59.94 148.35 HDTV 1080P
18 1920*1080 67.5 60 148.5 HDTV 1080P
-9- Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
5.2.2. PC mode
No Resolution H-freq(kHz) V-freq(Hz) 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 1152*864 54.34 60.05 80 VESA
7 1360*768 47.71 60.01 84.75 VESA(WXGA)
WUXGA(Reduced Blanking)
8 1920*1080 67.5 60 158.4
- Full HD Only
- 10 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
SOFTWARE UPDATE
1. USB Download * After downloading, have to adjust TOOL OPTION again.
1) Push "ADJ" key in service remote controller.
(*.epk file download) 2) Select "Tool Option 1" and Push “OK” button
1) Put the USB Stick to the USB socket. 3) Punch in the number. (Each model has their number.)
2) Automatically detecting update file in USB Stick.
- If your downloaded program version in USB Stick is Low,
it didn’t work. But your downloaded version is High, USB
data is automatically detecting. (Download Version High &
Power only mode, Set is automatically Download)
3) Show the message “Status: emmc copy”
4) Updating is starting.
5) Updating Completed, The TV will restart automatically.
Note: A message, ‘Updating Completed’ is not displayed on
the screen. When a SW Updating is finished(100%), a TV
SET automatically executes DC OFF/ON at the moment.
6) If your TV is turned on, check your updated version and
Tool option. (Explain the `, next stage)
* If downloading version is more high than your TV have, TV
can lost all channel data. In this case, you have to channel
recover. If all channel data is cleared, you didn’t have a DTV/
ATV test on production line.
- 11 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
BLOCK DIAGRAM
- 12 - Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
EXPLODED VIEW
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.
400
900
ARC1
AR1
800
541
500
LV1
540
120
HW1
831
HS1
HC1
200
570
730
or
300
700
720
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes.
TROUBLE SHOOTING GUIDE
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Contents of Standard Repair Process
First of all, Check whether there is SVC Bulletin in GSCS System for these model.
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
A. Video error date
Error
symptom No video/ Normal audio Revised date 1/16
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, EPI Cable, Speaker Cable, IR Key + WiFi/BT B/D Cable,,,)
☞A1 ☞A9
No video Normal Y Check Backlight on Y Check Module Normal Y
Normal audio On Replace Module
audio with naked eye Vcc(12V) voltage
N N N
Move to
☞A9 Check backlight Vcc over 30V Replace Main
Novideo/No Board
audio
Y
Over 30V Replace Module
End
N
Replace Main
Board
※Precaution ☞A4 & A2
Always check & record S/W version and White
Replace Main Board Re-enter White Balance value
Balance value before replacing the Main Board
1
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
A. Video error date
Error
symptom No video/ No audio Revised date 2/16
No Video / Normal Y Replace
No Audio Check Adaptor 19V voltage Main Board
output
N End
Replace Adaptor
2
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
A. Video error date
Error
symptom Picture broken/ Freezing Revised date 3/16
. By using Digital signal level meter
☞ A3
. By using Diagnostics menu on OSD
Check RF Signal level ( Advanced→ Channels→ Channel Tuning→ Manual Tuning → Check the Signal )
- Signal strength (Normal : over 50%)
- Signal Quality (Normal: over 50%)
Y Check whether other equipments have problem or not.
Normal
(By connecting RF Cable at other equipment)
Signal?
→ DVD Player ,Set-Top-Box, Different maker TV etc`
N
Check RF Cable ☞ A4
Normal Y Check SVC N Check Y
Connection Close
1.Reconnection Picture? S/W Version Bulletin? Tuner soldering
2.Install Booster N
Y
N
S/W Upgrade
N
Normal Contact with signal distributor
Picture? or broadcaster (Cable or Air)
Normal N
Y Picture? Replace
Main B/D
Y
Close
Close
3
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
A. Video error date
Error
symptom Color error Revised date 4/16
☞ A7
☞A6 ※ Check and
replace Link
Check color by input Y Y Y
Color Cable(LVDS Color Color
-External Input Replace Main B/D Replace module
error? Cable) and error? error?
-AV
contact
-HDMI N N
condition N
Check error End
color input
mode
Check
External Input/ External device Y
external
Component /Cable Replace Main/T-con B/D
device and
error normal
cable
N
Request repair
for external
device/cable
N
Check external External device Y
HDMI
device and /Cable Replace Main/T-con B/D
error
cable normal
4
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
A. Video error date
Error
symptom Vertical / Horizontal bar, residual image, Revised date 5/16
light spot, external device color error
Vertical/Horizontal bar, residual image, light spot
Replace Module
☞A6
N
☞ A7
Check color condition
by input Screen Y Check external Y Check and Screen N
Normal? Replace Main B/D Screen
-External Input normal? device replace Link normal? normal?
-HDMI connection Cable
condition N Y
N
Y
Replace Request repair End End
module for external
device
External device screen error-Color error Connect other external
device and cable N
Screen Replace
Check screen (Check normal operation normal? Main B/D
N condition by input External of External Input,
Check
Check S/W Version -External Input - Input Component, RGB and
version Y
Component error HDMI/DVI by connecting
-HDMI/DVI Jig, pattern
Y Generator ,Set-top Box
Request repair for
etc.
S/W Upgrade external device
Connect other external Y
device and cable
(Check normal N Replace
Screen
Normal N HDMI/ operation of External normal? Main B/D
screen? DVI Input, Component,
RGB and HDMI/DVI by
Y connecting Jig, pattern
Generator ,Set-top Box
End etc.
5
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
B. Power error date
Error
symptom No power Revised date 6/16
☞A8 ☞A9
Check LED Power LED Y DC Power on Normal Y
Replace Main B/D
On? by pressing Power Key operation?
On Remote control
. Stand-By: Red or Turn On
N N
. Operating: Turn Off
Check Power cord
was inserted properly
N Replace Adaptor
Normal?
Y
Close Normal Y
Check Adaptor Vcc Replace Main B/D
Y
voltage?
19V
N
Replace Adaptor
6
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
B. Power error date
Error
symptom No Off when on, off while viewing, power auto on/off Revised date 7/16
Check outlet
☞A10
N Y
Check Power cord Error? Check power off CPU
Replace Main B/D Normal? End
mode Abnormal
N
Check for all 3- phase
Power out Y Abnormal Replace Adaptor
1
Fix A/C cord & Outlet ☞A9
and check each 3
(If Power Off mode
phase out
is not displayed) Normal Y
Main B/D 교체
Check Adaptor voltage?
Output(19V)
N
Replace Adaptor
7
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
B. Power error date
Error
symptom Off when on, off while viewing, power auto on/off Revised date 8/16
*Please refer to the all cases which can be displayed on power off mode.
Power Off List Explanation Action contents
Power off when TV is not turned off during a certain time
KEYTIMEOUT RESULT : micom force to trigger TV power off. Check & Change Main B/D
CONDITION : When pressing power key while power on/off status, CPU does not response within 8 seconds
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
1SEC Power OFF Check & Change Main B/D
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.) Normal Case
ACDET
If there are many ACDETs connected, Power Board is defective Check & Change Adaptor
Power off by unstable AC power detect.
RESULT : micom check the stable power.
5V MNT Check & Change Adaptor
CONDITION : When AC on or DC on, stabilization check routine (Power Detect High
Check) fail after multi power on.
CPUABNORMAL If the CPU attempts to reset in case of abnormal operation and Shut Down in case of failure. Check & Change Main B/D
Power off when receiving no ack.
NO POLING RESULT : TV power off/on (Reboot) Check & Change Main B/D
CONDITION : There is no I2C response from CPU for 15 seconds.
CPUCMD Power off by main SoC command. Check & Change Main B/D
Power off by module error (OLED)
INV_ERROR Check & Change OLED Module
CONDITION : OLED Module send signal to micom
ONRF_FAIL RESULT : Reboot, CONDITION : OLED module compensation is running but fails. Check & Change OLED Module
PNWASHFAIL Power off by panel noise wash function fail case. Check & Change OLED Module
RESET When Micom is reset by AC Off
KEY Power off by Local key
OFFTIMER Power off by Off timer
SLEEPTIMER Power off by sleep timer
NOSIG Power off by No Signal
FANSTOP Power off by FAN operation stopped
INSTOP Power off by Instop Key
Normal Case
AUTO OFF Power off by auto off function
RESREC Power off by reserved recording
RECEND Power off when recording stops
SWDOWN Reboot by SW download function
UNKNOWN No meaning (same as initial value)
COMP_END OLED threshold voltage degradation(Compensation) completes.
PNWASHDONE Power off by panel noise wash function complited. (OLED)
8
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
C. Audio error date
Error
symptom No audio/ Normal video Revised date 9/16
☞A11 ☞A12
Check user N Check Amp Acc Normal Y
No audio Off
Screen normal menu > 3.3V, 19V voltage
Speaker off
Y N
Cancel OFF Replace main Board
Check Speaker N
disconnection Disconnection Replace MAIN Board End
Y
Replace Speaker
9
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
C. Audio error date
Error
symptom Wrecked audio/ discontinuation/noise Revised date 10/16
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
Wrecked audio/
Discontinuation/ Check and replace
Noise for speaker and
all audio connector
Check input Signal Y
signal -RF - normal? Wrecked audio/
External Input
Discontinuation/
signal N Replace Main B/D
Noise only
for D-TV
N
Wrecked audio/ ☞A12
Discontinuation/ Normal Replace
Check Amp Vcc
Noise only voltage? Adaptor
19V
for Analog Y
(When RF signal is not
received)
Request repair to external Wrecked audio/ Replace
End
cable/ANT provider Discontinuation/ Main B/D
Noise only
for External Input
(In case of External Input N
signal error) Connect and check Normal
Check and fix external other external audio?
device device
Y
Check and fix external device
10
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
D. Function error date
Error
symptom Remote control & Local switch checking Revised date 11/16
1. Remote control & Local switch checking Replace
Main B/D
☞A13 ☞A9
Check & Repair N Y Y
Check R/C itself Normal Y Normal Check 3.3V_st Normal Check IR Normal
operating? Cable connection operating? Voltage? Signal?
Operation On Main B/D Output signal
Connector solder
N
Y N N
Check R/C Operating Check & Replace Close Repair/Replace
When turn off light Baterry of R/C IR B/D
in room Replace
Main B/D
If R/C operate, Explain Normal Y
operating? Close
the customer cause is
interference from light
in room. N
Replace R/C
11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
D. Function error date
Error
symptom MR19 operating checking Revised date 12/16
2. MR19(Magic Remocon) operating error
☞A4
Check the N Check MR19
RF Receiver ver Normal Y Press the Is show ok N Turn off/on the
INSTART menu is “00.00”? itself Operation operating? set and press
wheel message?
the wheel
N
Y
Y
Check & Replace Close
Check & Repair Battery of MR19
RF assy
connection
Normal Y
☞A4 operating? Close
Is show ok N Press the back
RF Receiver ver N message? key about 5sec
Close N
is “00.00”?
Y
Replace MR19
Y Close
Down load the Firmware
*INSTART *If you conduct the loop at 3times, change the MR.
MENU14.RFRemocon
Test3. Firmware download
12
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
D. Function error date
Error
symptom Wifi operating checking Revised date 13/16
3.Wifi operating error
☞A4 ☞A14
Check the Wi-Fi Mac
value is N Check the Wifi wafer Normal N Replace
INSTART menu Voltage?
“NG”? 1pin Main B/D
Y
☞A14 Y
Close
Check & Repair
Wifi cable
connection
☞A4
Wi-Fi Mac
value N
Close
is “NG”?
Y
Change the Wifi
assy
13
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process
Established
D. Function error date
Error
symptom External device recognition error Revised date 14/16
Y Check technical
Check External Input and
Signal information Technical N
input Component Replace Main B/D
input? - Fix information information?
Recognition error
signal
- S/W Version
N Y
HDMI/
Check and fix DVI, Optical
Fix in Replace Main B/D
external device/cable Recognition error
accordance
with technical
information
14
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Only training and service purposes.
Standard Repair Process
Established
E. Noise date
Error
symptom Circuit noise, mechanical noise Revised date 15/16
Identify
Circuit Check
nose Replace PSU
noise location of
type
noise
Mechanical Check location of
noise noise
※ When the nose is severe, replace the module
(For models with fix information, upgrade the S/W
※ Mechanical noise is a natural
or provide the description)
phenomenon, and apply the 1st level OR
description. When the customer does not
agree, apply the process by stage. ※ If there is a “Tak Tak” noise from the cabinet,
※ Describe the basis of the description in refer to the KMS fix information and then
“Part related to nose” in the Owner’s proceed as shown in the solution manual
Manual. (For models without any fix information, provide
the description)
15
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Only training and service purposes.
Standard Repair Process
Established
Error
F. Exterior defect date
symptom Exterior defect Revised date 16/16
Zoom part with Module
Replace module
exterior damage Damage
Cabinet
Replace cabinet
Damage
remote
control Replace remote control
Damage
Stand
Replace stand
Damage
16
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Contents of Standard Repair Process Detail Technical Manual
비고
Continue to the next page
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Contents of Standard Repair Process Detail Technical Manual
불량 내용 페이지 비고
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom
A. Video error_No video/Normal audio date
Content Check LVDS Revised date A1
No Video/Normal audio
Reassemble
P7201
P600
A1
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom
A. Video error_No video/Normal audio date
Content Check White Balance value Revised date A2
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
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom A. Video error_Video error, video lag/stop date
Content TUNER input signal strength checking method Revised date A3
All Settings Programmes
Programme Tuning & Settings
Manual Tuning
When the signal is strong,
use the attenuator
(-10dB, -15dB, -20dB etc.)
A3
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom A. Video error_Video error, video lag/stop date
Content Version checking method Revised date A4
1. Checking method for remote control for adjustment
Version
Press the IN-START with the remote
control for adjustment
A4
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom A. Video error_Video error, video lag/stop date
Content TUNER checking part 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
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error A. Video error _Vertical/Horizontal bar, Established
symptom residual image, light spot date
Content connection diagram Revised date A5
As the part connecting to the external input,
check the screen condition by signal
A6
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom A. Video error_Color error date
Content Check Link Cable(LVDS) reconnection condition Revised date A7
P7201
Check the contact condition of the Link Cable, especially dust or mis insertion.
A7
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Appendix. Examples of Symptoms(Image error) Check for poor cable contact
Causemptom
Item Cause Symptom Image
Name
broken pin
CABLE Color smear Poor broken pin of FFC cable
Color is Excessive due to FFC Cable
CABLE R Color Excessive
Contact.
screen is dark due to poor contact due
CABLE Screen darkness to disconnection of the FFC cable pin.
G color transient due to poor FFC cable
CABLE G Color Excessive connection
A - 1/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Appendix. Examples of Symptoms(Image error) Check for poor cable contact
Causemptom
Item Cause Symptom Image
Name
CABLE Color spread LVDS cable connection problem
CABLE Color spread LVDS cable connection problem
CABLE Color spread LVDS cable connection problem
Due to foreign substance withi nLVDS
CABLE Screen stop cable PIN
A - 2/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Appendix. Examples of Symptoms(Main) Check parts by symptom
Causemptom
Item Cause Symptom Image
Name
Main Screen noise Bit noise from horizontal screen
Broken screen due to
Main Screen noise
Main IC problem
Main Dark picture Dark left-side screen
Top/bottom screen part
Main Broken picture Picture problem due to tuner
Inner side quality problem
A - 3/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Appendix. Examples of Symptoms(Main) Check parts by symptom
Item Symptom Name Cause Symptom Image
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
A - 4/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Appendix. Examples of Symptoms(Main) Check parts by symptom
Symptom
Item Cause Symptom Image
Name
No problem at the initial stage,
Main Broken screen G-color spread after 10 minutes
Right-side
Main Screen Right-side screen problem
problem
LG logo
Main Screen picture spread problem
Screen problem
No problem at the initial stage.
Right-side
Main During Heat run, right-side picture
picture problem
problem
A - 5/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Check parts by symptom
Appendix. Examples of Symptoms(Module)
Item Symptom Name Cause Symptom Image
Isometric Isometric horizontal bars occur
MODULE
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
A - 6/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Check parts by symptom
Appendix. Examples of Symptoms(Module)
Item Symptom Name Cause Symptom Image
Internal damage and image breakage
MODULE Image broken
due to external impact
Bend on the Bending due to lateral external impact
MODULE
screen and internal bending of BLU
Vertical spreading on cube screen
MODULE Vertical smear
in no signal
MODULE Over color Screen contour part brightly Over color.
A - 7/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Check parts by symptom
Appendix. Examples of Symptoms(Module)
Item Symptom Name Cause Symptom Image
MODULE Vertical bar Center Vertical Bar
MODULE Screen darkness Center of the screen 1 block dark
MODULE Vertical bar Center Vertical Bar
Darkness at the
MODULE bottom of the MODULE internal BLU breakage
screen
A - 8/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Check parts by symptom
Appendix. Examples of Symptoms(T-Con)
Item Symptom Name Cause Symptom Image
screen lower T-Con is defective and the picture
Main
image broken below the screen is broken
Main screen lower T-Con is defective and the picture
image broken below the screen is broken
screen lower T-Con is defective and the picture
Main
image broken below the screen is broken
screen lower T-Con is defective and the picture
Main
image broken below the screen is broken
A - 9/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Check parts by symptom
Appendix. Examples of Symptoms(T-Con)
Item Symptom Name Cause Symptom Image
T-CON Wafer Locking The strength is
Main Image Broken
weak and cable contact failure occurs
Darkness at the Initial normal operation,
Main
top of the screen upper darkness during heat run
The entire screen is dark and bit noise
Main Image Broken
occurs
The entire screen is dark and bit noise
Main Image Broken
occurs
A - 10/11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom B. Power error _No power date
Content Check front Power Indicator Revised date A8
LED
ST-BY condition: On or Off
Power ON condition: Turn Off
A8
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
B. Power error _No power
symptom date
Content Check power input voltage and ST-BY 3.5V Revised date A10
Check the VLED C2333 : 12V (T-con Vcc)
P600 #3,#4 : check Vled is
over than 30V
C2440 : 3.4V_ST
D471 : 19V (Adaptor)
Check C2333 19V after DC power on.
A9
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
B. Power error _Off when on, off whiling viewing
symptom date
Content POWER OFF MODE checking method Revised date A10
Entry method
1.Press the IN-START button of the remote control for adjustment
2.Check the entry into adjustment item 3
A10
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom C. Audio error_No audio/Normal video date
Content Checking method in menu when there is no audio Revised date A11
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
A11
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom C. Audio error_No audio/Normal video date
Content Voltage and speaker checking method when there is no audio Revised date A12
Check cable connection
L5601 : 3.3V (AMP Vcc)
C5608 : 19V (AMP Vcc)
A12
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom
D. Function error date
Content Remote control operation checking method Revised date A13
Pin Pin name
1 +3.4V_ST
2 NC
3 KEY2
4 NC P4003
5 LED_R
6 NC
7 GND
8 IR P4003
Pin Assignment
IR Sensor
Checking order
1, Check IR cable condition between IR & Main board.
2.Check the standby 3.5V on the terminal(refer to pin assignment table)
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.
A13
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom D. Function error date
Content Magic Remote/WiFi operation checking method Revised date A14
Wifi & BT Front
Pin Pin name
1 +3.4V_WIFI
2 GND
3 BT_WAKE_UP_HOST
4 COMBO_RESET
5 GND
Wifi & BT Rear 6 WIFI_SUSPEND/RESUME
7 +3.4V_WIFI
IR출력 확인 8 WOL/WIFI_PWR_ON
9 GND
10 WIFI_DP
11 WIFI_DM
12 +3.4V_WIFI
Pin Assignment
Checking order to check motion remote/wifi
Checking order
1.Check BT/Wifi cable condition between BT/Wifi assy & Main board.
2.Check the 3.5V on the terminal 1 pin
A14
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom E.Etc date
Content How to use the Service remote control Revised date A15
1. How to access the remote control
0 4 1 3
0 4 1 3
A15
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom E.Etc date
Content How to use the Service remote control Revised date A16
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
All KEY function [PIP PR-][PIP PR+][SWAP]
Function)
[PIP INPUT][DVI] KEY Function
P-ONLY (Added Changed to factory mode
Function) All KEY function &[INFO][STILL][HDMI HOT][USB HOT][HDMI4] KEY Action
INPUT Change to the external device mode
16:9Change in the order of 16:9=>Zoom1=>Zoom2=>Cinema Zoom=>Aucto
ARC
Screen=>4:3=>16:9
Changes in the order of Bright Picture=>Easy Picture=>Cinema=>Spots=>Game=>
PSM
Custom PIcture1=>Custom Picture2=>Bright Picture
SSM (Added
Standard(user)=>music=>cinema=>sports=>game=>standard(user)
Function)
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
Access to the Simplink-connected device
Function)
Digital EYE function ON/OFF
EYE
For some Model, access to the Test Pattern
TILT Used for screen tilting change (Access to the old PDP control mode)
A16
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom E.Etc date
Content How to use the Service remote control Revised date A17
B-TOOTH
Connected to Blue-Tooth
(Added Function)
Model Nam ex) 42PG60D-NA Current Model Name S/W Version ex)
IN-START V03.11.0 Current S/W version
MICOM Version ex) V3.05.0 current Mi-Com version UTT ex) User TV total usage time
POWER OFF STATUS ex) Shows power-off status
ADJ
Test Pattern (Off=>White=>Red=>Green=>Blue=>Black=>Pattern=>Off) Change
X-STUDIO
HDD,USB, external device’s HDD screen is activated
(Added Function)
MENU User function gets activated
EXIT Exit from the current mode
TIME SHIFT
Moves forward/backward of recorded contents
(Added Function)
MUTE Mute function (0 Volume)
IN-STOP SET to factory mode
VOL + - Volume Up/Down
CH + - Channel Up/Down
AV1,2,3
Connects to external input 1,2,3
(Added Function)
COMP1,2
Connects to Component 1,2
(Added Function)
HDMI1,2,3,4
Connects to HDMI 1,2,3,4
(Added Function)
DVI (Added Function) Connects to DVI
A17
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Only training and service purposes.
Standard Repair Process Detail Technical Manual
Error Established
symptom E.Etc date
Content Check items after Main B/D replacement Revised date A18
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. 조정리모컨 ADJ 진입한다.
No.13 Select White Balance
Record the R, G, B (GAIN, Cut) value of the
color temperature before main board
A14 replacement.
After replacing the main board, key in the
recorded value.
A18
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Only training and service purposes.
