Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.
It will also protect the receiver and it's components from being
damaged by accidental sh orts of the cir cui try 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.
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 conict between the
following servicing precautions and any of the safety precautions
on page 3 of this publication, always follow the safety precautions. Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power
source before;
a. Removing or reinstalling any component, circuit board
module or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug
or other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic
capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an explosion hazard.
2. Test high voltage only by measuring it with an appropriate
high voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc".
3. Do not spray chemicals on or near this receiver or any of its
assemblies.
4. Unless specied 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 specied 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 specied 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 sol-
der removal devices not classied as “anti-static” can generate
electrical charges sufcient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufcient 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 sufcient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within
the range or 500 °F to 600 °F.
2. Use an appropriate gauge of RMA resin-core solder composed
of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and well tinned.
4. Thoroughly clean the surfaces to be soldered. Use a mall wire-
bristle (0.5 inch, or 1.25 cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.
5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.
(500 °F to 600 °F)
b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-
type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
(500 °F to 600 °F)
b. First, hold the soldering iron tip and solder the strand
against the component lead until the solder melts.
c. Quickly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it there
only until the solder ows onto and around both the 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
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).
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.
This specification sheet is applied to all of the LED TV with
LD48V chassis.
2. Designation
(1) Because this is not a hot chassis, it is not necessary to
use an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
25 °C ± 5 °C of temperature and 65 % ± 10 % of relative
humidity if there is no specific designation.
(4) The input voltage of the receiver must keep AC 100-240
V~, 50/60 Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15.
In case of keeping module is in the circumstance of 0 °C, it
should be placed in the circumstance of above 15 °C for 2
hours.
In case of keeping module is in the circumstance of below
-20 °C, it should be placed in the circumstance of above 15
°C for 3 hours.
[Caution]
When still image is displayed for a period of 20 minutes or
longer (Especially where W/B scale is strong. Digital pattern
13ch and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area.
3.2. LAN Inspection
3.2.1. Equipment & Condition
▪ Each other connection to LAN Port of IP Hub and Jig
3.2.2. LAN inspection solution
▪ LAN Port connection with PCB
▪ Network setting at MENU Mode of TV
▪ Setting automatic IP
▪ Setting state confirmation
- If automatic setting is finished, you confirm IP and MAC
Address.
3.2.3. WIDEVINE key Inspection
- Confirm key input data at the "IN START" MENU Mode.
(1) Play the LAN Port Test PROGRAM.
(2) Input IP set up for an inspection to Test Program.
*IP Number : 12.12.2.2
3.3.2. LAN PORT inspection(PING TEST)
(1) Play the LAN Port Test Program.
(2) Connect each other LAN Port Jack.
(3) Play Test (F9) button and confirm OK Message.
(4) Remove LAN cable.
3.4. Model name & Serial number Download
3.4.1. Model name & Serial number D/L
▪ Press "P-ONLY" key of service remote control.
(Baud rate : 115200 bps)
▪ Connect RS-232C Signal to USB Cable to USB.
▪ Write Serial number by use USB port.
▪ Must check the serial number at Instart menu.
3.4.2. Method & notice
(1) Serial number D/L is using of scan equipment.
(2) Setting of scan equipment operated by Manufacturing
Technology Group.
(3) Serial number D/L must be conformed when it is produced
in production line, because serial number D/L is mandatory
by D-book 4.0.
* Manual Download (Model Name and Serial Number)
If the TV set is downloaded by OTA or service man, sometimes
model name or serial number is initialized.(Not always)
It is impossible to download by bar code scan, so It need
Manual download.
1) Press the "Instart" key of Adjustment remote control.
2) Go to the menu "7.Model Number D/L" like below photo.
3) Input the Factory model name(ex 47LB650V-ZA) or Serial
number like photo.
3.5. CI+ Key checking method
- Check the Section 3.1
Check whether the key was downloaded or not at ‘In Start’
menu. (Refer to below).
=> Check the Download to CI+ Key value in LGset.
3.5.1. Check the method of CI+ Key value
(1) Check the method on Instart menu
(2) Check the method of RS232C Command
1) Into the main ass’y mode(RS232: aa 00 00)
CMD 1CMD 2Data 0
AA00
2) Check the key download for transmitted command
(RS232: ci 00 10)
CMD 1CMD 2Data 0
CI10
3) Result value
- Normally status for download : OKx
- Abnormally status for download : NGx
3.5.2. Check the method of CI+ key value(RS232)
1) Into the main ass’y mode(RS232: aa 00 00)
CMD 1CMD 2Data 0
AA00
2) Check the mothed of CI+ key by command
(RS232: ci 00 20)
CMD 1CMD 2Data 0
CI20
3) Result value
i 01 OK 1d1852d21c1ed5dcx
CI+ Key Value
3.6. WIFI MAC ADDRESS CHECK
(1) Using RS232 Command
H-freq(kHz)V-freq.(Hz)
Transmission[A][I][][Set ID][][20][Cr][O][K][X] or [NG]
(2) Check the menu on in-start
4) Check the model name Instart menu. → Factory name
displayed. (ex 47LB650V-ZA)
5) Check the Diagnostics.(DTV country only) → Buyer
model displayed. (ex 47LB650V-ZA)
4.1. EDID(The Extended Display Identification
Data)/DDC(Display Data Channel) download
4.1.1. Overview
It is a VESA regulation. A PC or a MNT will display an optimal
resolution through information sharing without any necessity
of user input. It is a realization of "Plug and Play".
4.1.2. Equipment
- Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
- Adjustment remote control
4.1.3. Download method
(1) Press "ADJ" key on the Adjustment remote control, then
select "12.EDID D/L", By pressing "Enter" key, enter EDID
D/L menu.
For HDMI EDID
DVI-D to HDMI or HDMI to HDMI
(2) Select "Start" button by pressing "Enter" key, HDMI1/
HDMI2/ HDMI3/ HDMI4 are writing and display OK or NG.
4.1.4. EDID DATA
▪ Reference
- HDMI1 ~ HDMI3
- In the data of EDID, bellows may be different by Input mode.
(1) Objective: To reduce each Panel's W/B deviation
(2) How-it-works : When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one
of R/G/B is fixed at 192, and the other two is lowered to
find the desired value.
(3) Adjustment condition : normal temperature
1) Surrounding Temperature : 25 °C ± 5 °C
2) Warm-up time: About 5 Min
3) Surrounding Humidity : 20 % ~ 80 %
4.2.2. Equipment
(1) Color Analyzer: CA-210 (LED Module : CH 14)
(2) Adjustment Computer(During auto adj., RS-232C protocol
is needed)
(3) Adjustment Remote control
(4) Video Signal Generator MSPG-925F 720p/216-Gray
(Model: 204, Pattern: 49)
→ Only when internal pattern is not available
• Color Analyzer Matrix should be calibrated using CS-100.
4.2.3. Equipment connection MAP
Co lor Anal yze r
Pro be
RS -232 C
Pattern Gen era to r
Sig nal Sou rce
* If TV internal pattern is used, not needed
RS- 232 C
Co mp ute r
RS- 232 C
4.2.4. Adj. Command (Protocol)
<Command Format>
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS STOP
2) Zero calibrate probe then place it on the center of the
Display.
3) Connect Cable.(RS-232C to USB)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sign), check adj. status pre
mode. (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need.
(2) Manual adjustment. method
1) Set TV in Adj. mode using POWER ON.
2) Zero Calibrate the probe of Color Analyzer, then place it
on the center of LCD module within 10 cm of the surface.
3) Press ADJ key → EZ adjust using adj. R/C → 7. WhiteBalance then press the cursor to the right(key ►).
(When right key(►) is pressed 216 Gray internal pattern
will be displayed)
4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
5) Adjustment is performed in COOL, MEDIUM, WARM 3
modes of color temperature.
** G-fix adjustment
Adjust modes (Cool), Fix the G gain to 172 (default data)
and change the others (G/B Gain).
Adjust two modes(Medium / Warm), Fix the one of R/G/B
gain to 192 (default data) and decrease the others.
▪ If internal pattern is not available, use RF input. In EZ Adj.
menu 7.White Balance, you can select one of 2 Testpattern: ON, OFF. Default is inner(ON). By selecting OFF,
you can adjust using RF signal in 216 Gray pattern.
▪ Adjustment condition and cautionary items
1) Lighting condition in surrounding area
Surrounding lighting should be lower 10 lux. Try to
isolate adj. area into dark surrounding.
2) Probe location
: Color Analyzer(CA-210) probe should be within 10 cm
and perpendicular of the module surface (80° ~ 100°)
3) Aging time
- After Aging Start, Keep the Power ON status during 5
Minutes.
- In case of LCD, Back-light on should be checked
using no signal or Full-white pattern.
4.2.6. Reference (White balance Adj. coordinate and
color temperature)
▪ Luminance : 206 Gray
▪ Standard color coordinate and temperature using CS-1000
(over 26 inch)
Mode
Coordinate
xy
Temp∆uv
Cool0.2710.27013000 K0.0000
Medium0.2860.2899300 K0.0000
Warm0.3130.3296500 K0.0000
Standard color coordinate and temperature using CA-210(CH 14)
▪
Mode
Coordinate
xy
Temp∆uv
Cool0.271 ± 0.0020.270 ± 0.00213000 K 0.0000
Medium 0.286 ± 0.0030.289 ± 0.0039300 K0.0000
Warm0.313 ± 0.0020.329 ± 0.0026500 K0.0000
4.2.7. EDGE & IOL LED White balance table
▪ EDGE LED module change color coordinate because of
aging time.
▪ Apply under the color coordinate table, for compensated
aging time.
▪ (Normal line) Edge & ALEF LED White balance table
- gumi(Mar. ~ Dec.) & Global
Model : (normal line) LGD, CMI
(1) Put the USB Stick to the USB socket.
(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 "Copying files from memory".
(4) Updating is starting.
(5) Updating Completed, The TV will restart automatically.
(6) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, 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.
* After downloading, have to adjust TOOL OPTION again.
1) Push "IN-START" key in service remote control.
2) Select "Tool Option 1" and push "OK" key.
3) Punch in the number. (Each model has their number.)
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essenti al that these sp ecial safet y parts shoul d be replac ed with the same compon ents as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
Value Mode Description
4’b1000 SB51_ExtSPI 51 boot from SPI
4’b1001 HEMCU_ExtSPI ARM boot from SPI
4’b1010 HEMCU_ROM_EMMC ARM boot from ROM; outer storage is eMMC
4’b1011 HEMCU_ROM_NAND ARM boot from ROM; outer storage is NAND
4’b1100 DBUS for test only
4’b0000 SB51_ExtSPI + Authentication 51 boot from SPI with ARM authentication
4’b0001 SB51_ExtSPI + Authentication HEMCU_ExtSPI + Authentication
4’b0011 HEMCU_ROM_NAND + Authentication ARM boot from ROM with authentication;
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Example of Option name
TU_Q_T2 = apply TDSQ type tuner and T2 country
TU_M/W = apply TDSM&TDSW Type Tuner
13’ Tuner Type for Global
TDS’S’-G501D : T/C Half NIM Horizontal Type
TDS’Q’-G501D : T/C/S2 Combo Horizontal type
TDS’Q’-G601D : T2/C/S2 Combo Horizontal Type
TDS’Q’-G651D : T2/C/S2 Combo Vertical Type
TDS’M’-C601D : China NIM with Isolater Type
TDS’W’-J551F : Japan Dual NIM
TDS’W’-B651F : Brazil 2Tuner
TDS’W’-A651F : Taiwan 2Tuner
TDS’W’-K651F : Colombia DVB-T2 2Tuner
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
RF_SWITCH_CTL
Ground Width >= 24mils
IF_AGC
C1511
0.1uF
16V
ATV_OUT
EU
R1523
100
+3.3V_TU
L1502
BLM18PG121SN1D
C1509
0.1uF
FE_DEMOD1_TS_ERROR
+3.3V_TU
L1503
BLM18PG121SN1D
C1510
0.1uF
+3.3V_TU
R1517
200
B
C1512
16V
0.1uF
L1504
BLM18PG121SN1D
OPT
R1518
200
E
Q1500
MMBT3906(NXP)
C
R1519
100
1608 perallel
because of derating
TU_CVBS
/TU_RESET1
+3.3V_NORMAL
TU_Q/N/M/W
C1513
0.1uF
16V
+5V_NORMAL
TU_Q/N/M/W
C1514
1uF
+3.3V_NORMAL
L1505
BLM18PG121SN1D
C1520
22uF
10V
TU_Q/N/M/W
IC1500
AP2132MP-2.5TRG1
TU_Q/N/M/W
C1515
0.1uF
TU_Q/N/M/W
R1520
10K
VCTRL
1
PG
2
EN
3
VIN
4
9
THERMAL
2A
EAN61387601
8
7
6
5
Vout=0.6*(1+R1/R2)
+3.3V_TU
[EP]
GND
ADJ
VOUT
NC
C1519
0.1uF
16V
T2 : Max 1.7A
else : Max 0.7A
D_Demod_Core_1
R1521
10K
1/16W
1%
R2
TU_1.2V
R1
R1522
10K
1/16W
1%
TU_1.2V
R1521-*1
18K
TU_1.1V
R1522-*1
15K
TU_1.1V
TU_Q/N/M/W
C1516
10uF
10V
1/16W
1/16W
1%
1%
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Input trace widths should be sized to conduct at least 3A
Ouput trace widths should be sized to conduct at least 2A
LNB
R1803
39K
1/16W
1%
Caution!! need isolated GND
A_GND
R1804
0
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
- T-Con L/D Function
HIGH : Enable
LOW or NC : Disable
*LGD_120Hz: T240 module (UB98/95,D9)
+3.3V_NORMAL
R13018
4.7K
OPT
R13013 0
+3.3V_NORMAL
R13019
4.7K
OPT
R13012 0
G+
1.5K
URSA_TX_HTPD_Pullup
S
Q203
AO3438
URSA_TX_HTPD_Pullup
0
OPT
NON_D9_I2C
NON_D9_I2C
Data_Format_1
PWM_TOUT
Data_Format_0
EL_VDD_DETECT_22V
R211
G
R220
R13014 0
0
R13017
D
D9_I2C
D9_I2C
S
Q13004
2N7002A
S
Q13005
2N7002A
R222
10K
URSA_TX_HTPD_Pullup
HTPDAn
D9_I2C_SCL
TCON_I2C_EN
G
R13061 0
D
Non_AUO_Module
R13055
OPT
33
D9_I2C_SDA
TCON_I2C_EN
G
R13062 0
D
Non_AUO_Module
R13059
OPT
33
Data Input Format[1:0]
*Mode 3 (4 Division)
- Data Format 0(Pin37) = Low
Data Format 1(Pin36) = High
*Mode 2 (2 Division)
- Data Format 0(Pin37) = High
Data Format 1(Pin36) = Low
I2C_SCL7
I2C_SDA7
[41P Vx1
output wafer]
41pin_Wafer
P13001
FI-RE41S-HF-J-R1500
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
1
2
3
4
5
6
7
8
9
D9_I2C_SCL
D9_I2C_SDA
TXDBP11_L
TXDBN11_L
TXDBP10_L
TXDBN10_L
TXDBP9_L
TXDBN9_L
TXDBP8_L
TXDBN8_L
TXDBP7_L
TXDBN7_L
TXDBP6_L
TXDBN6_L
TXDBP5_L
TXDBN5_L
TXDBP4_L
TXDBN4_L
TXDBP3_L
TXDBN3_L
TXDBP2_L
TXDBN2_L
TXDBP1_L
TXDBN1_L
TXDBP0_L
TXDBN0_L
GND_Vx1
GND_Vx1_2
Not Used Net (UB85/95/UC89)
TXDBP11_L
TXDBN11_L
TXDBP10_L
TXDBN10_L
TXDBP9_L
TXDBN9_L
TXDBP8_L
TXDBN8_L
GND_Vx1
GND_Vx1_2
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
First of all, Check whether there is SVC Bulletin in GCSC System for these model.
Page 54
Standard Repair Process
Established
date
Revised date
2013.01.31
LCD TV
Error
symptom
A. Video error
No video/ Normal audio
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, LVDS Cable, Speaker Cable, IR B/D Cable,,,)
☞A18 ☞A1
N
Y
Check Back Light
On with naked eye
☞A18
Check Power Board 24V output
On
Normal
voltage
N
Repair Power
Board or parts
Y N Check Power
Board
24V, 12V,3.5V etc.
Replace Inverter
Y
or module
Normal
voltage
N
Repair Power
Board or parts
End
Replace T-con/Main
Y
Board or module
And Adjust VCOM
No video
Normal audio
Normal
audio
Move to No
video/No audio
1/16
※Precaution
Always check & record S/W Version and White
Balance value before replacing the Main Board
☞A4 & A2
Replace Main Board
1
Re-enter White Balance value
Page 55
Standard Repair Process
LCD TV
Error
symptom
No Video/
No audio
☞A18
Check various
voltages of Power
Board ( 3.5V,12V,20V
or 24V…)
A. Video error
No video/ No audio
Normal
voltage?
Replace Power
Board and repair
parts
Y
N
Check and
replace
MAIN B/D
Established
date
Revised date
End
2013.01.31
2/16
2
Page 56
Standard Repair Process
LCD TV
☞ A3
Check RF Signal level
Normal
Signal?
N
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Normal
Picture?
Y
Close
Y
N
Error
symptom
A. Video error
Picture broken/ Freezing
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( Setting→ Support→ Signal Test )
- Signal strength (Normal : over 50%)
- Signal Quality (Normal: over 50%)
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ DVD Player ,Set-Top-Box, Different maker TV etc`
☞ A4
Normal
Picture?
Contact with signal distributor
or broadcaster (Cable or Air)
Y
N
Check
S/W Version
SVC
Bulletin?
Y
S/W Upgrade
Normal
Picture?
Y
Established
date
Revised date
N
N
2013.01.31
Check
Tuner soldering
N
Replace
Main B/D
3/16
Y
Close
3
Close
Page 57
Standard Repair Process
LCD TV
☞A6
Check color by input
-External Input
-COMPONENT
-AV
-HDMI
☞A8
Check Test pattern
Error
symptom
Color
error?
N
Check error
color input
mode
A. Video error
☞ A7
※ Check
and replace
Y
Link Cable
(V by one)
and contact
condition
External Input/
Component
error
Color error
Check
external
device and
cable
Color
error?
N
Y
Replace Main B/D
Established
date
Revised date
External
device/Cable
normal
N
Color
error?
End
Y
2013.01.31
4/16
Y
Replace module
N
Replace Main/T-con B/D
HDMI
error
Check external
device and
cable
4
Request repair
for external
device/cable
N
External
device/Cable
normal
Y
Replace Main/T-con B/D
Page 58
Standard Repair Process
A. Video error
LCD TV
Error
symptom
Vertical / Horizontal bar, residual image,
light spot, external device color error
Vertical/Horizontal bar, residual image, light spot
☞A6
Check color condition by input
-External Input
-Component
-HDMI
☞A8
Check Test pattern
Screen
normal?
N
Replace
module
Check external
Y
device
connection
condition
Normal?
N
Request repair
for external
device
External device screen error-Color error
☞ A7
Check and
Y
replace Link
Cable
Established
date
Revised date
Screen
normal?
End
N
Y
2013.01.31
Replace Main/T-con B/D
(adjust VCOM)
For LGD panel
Replace Main B/D
For other panel
5/16
Replace
Module
N
Screen
normal?
Y
End
Check S/W Version
Check
version
Y
S/W Upgrade
Normal
screen?
Y
End
N
N
Check screen
condition by input
-External Input
-Component
-HDMI/DVI
External
Input
error
Component
error
HDMI/
DVI
5
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Screen
normal?
Request repair for
external device
Screen
normal?
N
Y
Y
N
Replace
Main/T-con
B/D
Replace
Main /T-con
B/D
Page 59
Standard Repair Process
LCD TV
☞A17
Check
Logo LED
. Stand-By: Red or Turn On
. Operating: Turn Off
Check Power cord
was inserted properly
Error
symptom
Power LED
On?
N
Normal?
Y
Close
Y
N
※
B. Power error
Check ST-BY 3.5V
☞A18
No power
DC Power on
by pressing Power Key
On Remote control
Y
Normal
Y
voltage?
N
Established
date
2013.01.31
Revised date
☞A18
Y
N
Check Power
On ‘”High”
Replace Main B/D
Normal
operation?
☞A18
Measure voltage of each output of Power B/D
N
Y
Replace Main B/D
Normal
voltage?
Replace Power B/D
OK?
Y
6/16
Replace
Power
B/D
Replace Power
B/D
6
Page 60
Standard Repair Process
LCD TV
Check outlet
Check A/C cord
Check for all 3- phase
power out
Error
symptom
Error?
Y
Fix A/C cord & Outlet
and check each 3
phase out
B. Power error
Off when on, off while viewing, power auto on/off
☞A19
N
Check Power Off
Mode
☞A18
(If Power Off mode
is not displayed)
Check Power B/D
voltage
※ Caution
Check and fix exterior
of Power B/D Part
Abnormal
Abnormal
Established
date
Revised date
CPU
1
Normal
voltage?
Replace Power B/D
Replace Main B/D
Y
N
2013.01.31
Replace Power B/D
Replace Main B/D
Normal?
N
7/16
Y
End
* Please refer to the all cases which
can be displayed on power off mode.
Status Power off List Explanation
"POWEROFF_REMOTEKEY" Power off by REMOTE CONTROL
"POWEROFF_OFFTIMER" Power off by OFF TIMER
"POWEROFF_SLEEPTIMER" Power off by SLEEP TIMER
"POWEROFF_INSTOP" Power off by INSTOP KEY
"POWEROFF_AUTOOFF" Power off by AUTO OFF
Normal
Abnormal
"POWEROFF_ONTIMER" Power off by ON TIMER
"POWEROFF_RS232C" Power off by RS232C
"POWEROFF_RESREC" Power off by Reservated Record
"POWEROFF_RECEND" Power off by End of Recording
"POWEROFF_SWDOWN" Power off by S/W Download
"POWEROFF_UNKNOWN" Power off by unknown status except listed case
"POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble
"POWEROFF_CPUABNORMAL" Power off by CPU Abnormal
7
Page 61
Standard Repair Process
LCD TV
No audio
Screen normal
Error
C. Audio error
symptom
No audio/ Normal video
☞A20 ☞A21+A18
Check user
menu >
Speaker off
Off
Y
Cancel OFF
Check audio B+
N
24V of Power
Board
Established
date
Revised date
Normal
voltage
Replace Power Board and repair parts
Y
N
2013.01.31
8/16
Check
Speaker
disconnection
Disconnection
Y
Replace Speaker
8
N
Replace MAIN Board
End
Page 62
Standard Repair Process
LCD TV
Check input
signal
-RF
-External Input
signal
Error
symptom
C. Audio error
Wrecked audio/ discontinuation/noise
Established
date
Revised date
2013.01.31
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
☞A21+A18
Check audio
B+ Voltage (24V)
Y
Normal
voltage?
N
Replace Power B/D
Replace Main B/D
N
Y
Signal
normal?
N
Y
(When RF signal is not
received)
Request repair to external
cable/ANT provider
(In case of
External Input
signal error)
Check and fix
external device
Wrecked audio/
Discontinuation/
Noise for
all audio
Wrecked audio/
Discontinuation/
Noise only
for D-TV
Wrecked audio/
Discontinuation/
Noise only
for Analog
Wrecked audio/
Discontinuation/
Noise only
for External Input
Check and replace
speaker and
connector
Replace Main B/D
Connect and check
other external
device
Normal
audio?
9/16
End
9
Check and fix external device
Page 63
Standard Repair Process
D. Function error
Remote control & Local switch checking
LCD TV
Error
symptom
1. Remote control(R/C) operating error
☞A22
Check R/C itself
Operation
Check R/C Operating
When turn off light
in room
If R/C operate,
Explain the customer
cause is interference
from light in room.
operating?
Normal
Y
N
Check & Replace
Baterry of R/C
Normal
operating?
Replace R/C
Check & Repair
Cable connection
Connector solder
Y
Close
N
Normal
operating?
Y
Close
☞A22
Check B+
N
On Main B/D
Established
date
Revised date
Y
N
3.5V
Normal
Voltage?
☞A18
Check 3.5v on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
2013.01.31
☞A22
Check IR
Output signal
10/16
Replace
Main B/D
Normal
Signal?
N
Repair/Replace
IR B/D
Y
10
Page 64
Standard Repair Process
D. Function error
LCD TV
Error
symptom
2. MR(Magic Remocon) operating error
☞A4
Check the
INSTART menu
RF Receiver ver
is “00.00”?
☞A23
Check & Repair
connection
Y
RF assy
☞A4
RF Receiver ver
is “00.00”?
N
Check MR itself
Operation
N
Close
MR operating checking
Normal
operating?
Check & Replace
Battery of MR
Normal
operating?
N
Replace MR
Y
N
Y
Press the
wheel
Close
Established
date
Revised date
Is show ok
message?
Y
Close
Is show ok
message?
Y
2013.01.31
Turn off/on the
N
set and press
the wheel
N
11/16
Press the back
key about 5sec
Y
Down load the Firmware
* INSTART MENU14.RF
Remocon Test3. Firmware
download
Close
* If you conduct the loop at 3times, change the M4.
11
Page 65
Standard Repair Process
LCD TV
Error
symptom
3.Wifi operating error
☞A4
Check the
INSTART menu
Wi-Fi Mac value
is “NG”?
☞A24
Check & Repair
Y
Wifi cable
connection
☞A4
Wi-Fi Mac value
is “NG”?
D. Function error
Wifi operating checking
☞A24
N
Check the Wifi wafer
N
Close
1pin
Established
Revised date
Normal
Voltage?
Y
Close
date
N
2013.01.31
12/16
Replace
Main B/D
Y
Change the Wifi
assy
12
Page 66
Standard Repair Process
LCD TV
Check
input
signal
Error
symptom
Y
Signal
input?
N
Check and fix
external device/cable
D. Function error
External device recognition error
Check technical
information
- Fix information
- S/W Version
Technical
information?
Fix in
accordance
with technical
information
Y
N
Established
date
Revised date
External Input and
Component
Recognition error
HDMI/
DVI, Optical
Recognition error
2013.01.31
14/16
Replace Main B/D
Replace Main B/D
14
Page 67
Standard Repair Process
LCD TV
Identify
nose
type
Error
symptom
Circuit
noise
Mechanical
noise
※ Mechanical noise is a natural
phenomenon, and apply the 1st level
description. When the customer does not
agree, apply the process by stage.
※ Describe the basis of the description
in “Part related to nose” in the Owner’s
Manual.
Check location
of noise
Check location of
noise
Circuit noise, mechanical noise
E. Noise
Replace PSU
※ When the nose is severe, replace the module
(For models with fix information, upgrade the
S/W or provide the description)
OR
※If there is a “Tak Tak” noise from the
cabinet, refer to the KMS fix information and
then proceed as shown in the solution manual
(For models without any fix information,
provide the description)
Established
date
Revised date
2013.01.31
15/16
15
Page 68
Standard Repair Process
LCD TV
Error
symptom
Zoom part with
exterior damage
F. Exterior defect
Module
damage
Cabinet
damage
Remote
controller
damage
Exterior defect
Replace module
Replace cabinet
Replace remote controller
Established
date
Revised date
2013.01.31
16/16
Stand
dent
Replace stand
16
Page 69
Contents of LCD TV Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
1
A. Video error_ No video/Normal
audio
2 Check White Balance value A2
4
A. Video error_ video error /Video
lag/stop
5 LCD-TV Version checking method A4
6 Tuner Checking Part A5
A. Video error _Vertical/Horizontal bar,
7
residual image, light spot
8
A. Video error_ Color error
9 Adjustment Test pattern - ADJ Key A8
10
11 Exchange Main Board (2) A-2/5
<Appendix>
12 Exchange Power Board (PSU) A-3/5
Defected Type caused by T-Con/
Inverter/ Module
13 Exchange Module (1) A-4/5
Check LCD back light with naked eye A1
TUNER input signal strength checking
method
LCD TV connection diagram A6
Check Link Cable (EPI) reconnection
condition
Exchange Main Board (1) A-1/5
A3
A7
14 Exchange Module (2) A-5/5
Continue to the next page
Page 70
Contents of LCD TV Standard Repair Process Detail Technical Manual
Continued from previous page
No. Error symptom Content Page Remarks
16
B. Power error_ No power
17 Check power input Voltage & ST-BY 3.5V A18
18
19
20
21
22
23 Wifi operation checking method A24
24 Camera operation checking method A25 Not Used
25 E. Etc Tool option changing method A26
B. Power error_Off when on, off
while viewing
C. Audio error_ No audio/Normal
video
D. Function error
Check front display LED A17
POWER OFF MODE checking method A19
Checking method in menu when there is
no audio
Voltage and speaker checking method
when there is no audio
Remote controller operation checking
method
Motion Remote operation checking
method
A20
A21
A22
A23
Page 71
Standard Repair Process Detail Technical Manual
LCD TV
<XXUB83/820X-XX>
Error
symptom
Content
A. Video error_No video/Normal audio
Check LCD back light with naked eye
Established
date
Revised
date
2013.01.31
A1
After turning on the power and disassembling the case, check with the naked eye,
whether you can see light from locations.
A1
* Tuner is different from region
Page 72
Standard Repair Process Detail Technical Manual
LCD TV
<ALL MODELS>
Error
symptom
Content
A. Video error_No video/Normal audio
Check White Balance value
Established
date
Revised
date
2014.02.14
A2
Entrymethod
Entry method
1. Press theADJ buttonontheremotecontroller for adjustment.
1. Press the ADJ button on the remote controller for adjustment.
2. Enter intoWhiteBalanceofitem6.
2. Enter into White Balance of item 10.
3. After recordingtheR, G, B (GAIN, Cut) valueofColor Temp
3. After recording the R, G, B (GAIN, Cut) value of Color Temp
(Cool/Medium/Warm), re-enter thevalueafter replacingtheMAIN BOARD.
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
A2
Page 73
Standard Repair Process Detail Technical Manual
LCD TV
<ALL MODELS>
Error
symptom
Content
A. Video error_Video error, video lag/stop
TUNER input signal strength checking method
Established
date
Revised
date
MENU support signal test
select channel
2014.02.14
A3
A3
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)
Page 74
Standard Repair Process Detail Technical Manual
LCD TV
Error
symptom
Content
A. Video error_Video error, video lag/stop
LCD-TV Version checking method
Established
date
Revised
date
2014.02.14
A4
<ALL MODELS>
1. Checking method for remote controller for adjustment
Version
Press the IN-START with the remote
controller for adjustment
A4
Page 75
Standard Repair Process Detail Technical Manual
LCD TV
<ALL MODELS>
Error
symptom
Content
A. Video error_Video error, video lag/stop
TUNER checking part
Established
date
Revised
date
2014.02.14
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
Page 76
Standard Repair Process Detail Technical Manual
LCD TV
<ALL MODELS>
Error
symptom
Content
A. Video error _Vertical/Horizontal bar,
residual image, light spot
LCD TV connection diagram (1)
Established
date
Revised
date
2014.02.14
A6
As the part connecting to the external input, check
the screen condition by signal
A6
Page 77
Standard Repair Process Detail Technical Manual
LCD TV
<ALL MODELS>
Error
symptom
Content
Check Link Cable (LVDS) reconnection condition
A. Video error_Color error
Established
date
Revised
date
2014.02.14
A7
Check the contact condition of the Link Cable, especially dust or mis insertion.
A7
* Tuner is different from region
Page 78
Standard Repair Process Detail Technical Manual
LCD TV
Error
symptom
Content
A. Video error_Color error
Adjustment Test pattern - ADJ Key
Established
date
Revised
date
2014.02.14
A8
You can view 6 types of patterns using the ADJ Key