11Schematic Diagram--------------------------------------------4512Printed Circuit Board------------------------------------------6113Exploded View and Replacement Parts List-----------66
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TH-43E410T TH-49E410T
1Safety Precautions
1.1.General Guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3.After servicing, make the followingleakagecurrent checks to prevent the customerfrom being exposedto shock hazards.
4.When conducting repairs and servicing, donot attempt to modify the equipment, its parts or its materials.
5.When wiring units (withcables, flexible cables or lead wires) are supplied asrepair parts and only one wire or some of thewires havebeenbroken or disconnected, do not attempt torepair or re-wire the units. Replace the entire wiring unit instead.
6.When conducting repairs andservicing, donot twist the Faston connectors but plugthemstraight in or unplug themstraightout.
1.1.1.Leakage Current Cold Check
1.Unplug the AC cord and connect a jumper between thetwo prongs on the plug.
2.Measure the resistance value, with an ohmmeter,between the jumpered AC plug and each exposedmetallic cabinet part on the equipment such asscrewheads, connectors, control shafts, etc. When theexposed metallic part has areturnpathto the chassis, thereading should be8.5Mohm to 13Mohm.When the exposed metal does not have a return path to the chassis, thereading must be .
1.1.2.Leakage Current Hot Check (SeeFigure 1.)
1.Plug the AC cord directly into the AC outlet. Do not usean isolation transformer for this check.
2.Connect a 1.5kohm, 10 watts resistor, in parallel with a
0.15F capacitors, between each exposed metallic parton the set and a good earth ground such as a water pipe,as shown in Figure 1.
3.Use an AC voltmeter, with 1000 ohms/volt or moresensitivity, to measure the potential across theresistor.
4.Check each exposed metallic part, and measure thevoltage at each point.
5.Reverse the AC plug in the AC outlet and repeat each ofthe abovemeasurements.
6.The potential at any point should not exceed 0.75 voltsRMS. A leakage current tester (Simpson Model 229 orequivalent) may be used to make the hot checks, leakagecurrent must not exceed 1/2 milliamp. Incase ameasurement is outside of the limits specified, there isapossibility of a shock hazard, and the equipment shouldbe repaired and rechecked before it is returned to thecustomer.
Figure 1
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TH-43E410T TH-49E410T
2Warning
2.1.Prevention of Electrostatic Discharge (ESD) to 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 typicalES devices are integrated circuits and some field-effect transistors andsemiconductor [chip] components. Thefollowing techniques should be used to help reducethe incidence of component damagecaused by electrostatic discharge(ESD).
1.Immediately before handling any semiconductor component orsemiconductor-equippedassembly, drain off any ESDon yourbody bytouching a known earth ground. Alternatively,obtainand wear a commercially available discharging ESD wrist strap,which should be removedfor 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 onaconductive surface such asaluminum foil, toprevent electrostatic charge builduporexposure of theassembly.
3.Useonly a grounded-tip solderingiron tosolder or unsolder ES devices.
4.Use only an anti-staticsolder removal device. Some solder removal devices not classified as [anti-static (ESD protected)] cangenerate electrical chargesufficient to damage ES devices.
5.Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6.Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Mostreplacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil orcomparable conductive material).
7.Immediately before removing the protective material fromtheleads of a replacement ES device, touch the protective materialto the chassis or circuit assembly into which the device will beinstalled.
Caution
Besurenopower is appliedto the chassis or circuit, and observe all other safety precautions.
8.Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise ham less motion such as thebrushingtogether of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD)sufficient to damage an ES device).
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TH-43E410T TH-49E410T
2.2.About lead free solder (PbF)
Note: Lead is listed as (Pb) in the periodic table of elements.
In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.
The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).
That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
This model uses Pb Free solder in it’s manufacture dueto environmental conservation issues. For service and repair work, we’dsuggest the use of Pb freesolder as well, althoughPb solder may beused.
PCBs manufactured using leadfree solder will have the PbF within a leaf Symbol PbFstamped on the back of PCB.
Caution
•Pb free solder has a higher melting pointthan standard solder. Typically the melting point is 50 ~ 70 °F (30~40°C) higher. Pleaseuse a high temperature solderingiron and set it to 700 ± 20°F(370 ± 10 °C).
•Pb free solder will tend tosplash when heatedtoo high (about 1100 °F or 600 °C).If you must use Pb solder, please completely remove all of the Pb free solderon the pins or solder area before applying Pbsolder. If this is not practical, besureto heat the Pb free solder until it melts, beforeapplying Pb solder.
•After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto theopposite side. (see figure below)
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TH-43E410T TH-49E410T
3Service Navigation
3.1.Service Hint
Board NameMain DeviceRemarks
A BOARDTUN, EEP, SPI, MTK ICRepairable
P BOARDPower Supply, Power switch, KeyscanRepairable
K BOARDRemote, LED, Luminence SensorRepairable
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TH-43E410T TH-49E410T
4Specifications
Power sourceAC 220-240 V, 50 / 60 Hz
Power consumption
(Rated power / Standby power)
43-inch model85 W / 0.25 W49-inch model98 W / 0.25 W
•Design and Specifications aresubject to change without notice. Mass and Dimensions shown are approximate.
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TH-43E410T TH-49E410T
5Service Mode
5.1.How to enter into Service Mode
5.1.1.Purpose
After exchange parts, check and adjust the contents of adjustment mode.
While pressing [VOLUME ( - )] button of themain unit, press [INFO] buttonof the remotecontrol three times within 2 seconds.
5.1.2.Key command
[1] button...Main items Selection in forward direction[2] button...Main items Selection in reverse direction[3] button...Sub items Selection in forwarddirection[4] button...Sub items Selection in reverse direction[VOL] button...Value of subitems change in forward direction ( +), in reverse direction ( - )
5.1.3.How to exit
Switch off the power with the [POWER] buttonon the main unit or the [POWER] buttonon the remotecontrol.
5.1.4.Contents of adjustment mode
•Value is shown as a hexadecimal number.
•Preset value differs depending on models.
•After entering the adjustment mode, take note ofthe value in eachitem beforestarting adjustment.
Main itemSub itemSample Data
ADJUSTH POS
H AMP
V POS
V AMP
V COM
WB-ADJR-GAIN8D
G-GAINAE
B-GAINFF
R-CENT6C
G-RENT80
B-CENTA0
OPTIONBoot upgradeNO
STBY-SET00
EMERGENCYON
CLK MODE00
CLOCKFC7
Y/C DELAYDYNAMIC
OPT 100000000
OPT 211100110
OPT 300001001
OPT 400000000
EDID-CLKHIGH
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5.1.5.Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory
shipment setting].
5.1.6.Exit
1.Disconnect the ACcordfrom wall outlet.
5.1.7.Hotel Mode
1.PurposeRestrict a function for hotels.
2.Access command to theHotel mode setup menu.In order to display theHotel mode setup menu: While pressing [VOLUME (-)] button of the main unit,press [AV] button of theremote control three times within2 seconds.
Then, the Hotel modesetupmenu is displayed.
3.To exit the Hotel modesetupmenuDisconnect AC power cord fromwall outlet.
4.Explain the Hotel modesetup menu
ItemFunction
Hotel ModeSelecthotel mode On/Off
Initial INPUTSelectinput signal modes.
Set the input, when eachtime power is switched on.Selection :Off,Analogue,DVB-C,DVB-T,AV1,AV2,HDMI1,HDMI2
•Off:give priority to a last memory. However, Euromodel is compulsorily set toTV.
Initial POSSelectprogramme number.
Selection :Off/0 to99
•Off: give priority toa last memory.
InitialVOL LEVELAdjust the volume when eachtime power is switched
on.Selection Range :Off/0 to100
•Off: give priority toa last memory.
Maximum Vol LevelAdjustmaximum volume.
Range :0 to 100
Button LockSelect local key conditions.
Selection :Off/SETUP/MENU/ALL
•OFF: altogether valid
•SETUP: only F-key is invalid
(Tuning guide (menu) can not be selected.)
•MENU: onlyF-key isinvalid(only Volume/Mute can be selected.)
•ALL: altogether invalid.
Remote LockSelectremote control key conditions.
Selection :Off/SETUP/MENU
•OFF: altogether valid.
•SETUP: only Setup menu is invalid.
•MENU:Picture/Sound/Setup menu are invalid.
HotelMode USBBasically after useralready setup the hotel mode
according to their criteria, what they need to do is
•insert USB (while in hotel mode)
•choose‘Copy TVtoUSB’ to copythe setting intothe USB (a file will be created to store the hotelmode setting in the USB)
•switch ‘OFF’ the unit
•pull out USB from unit
To copy the hotel mode settingfromUSB.
•enter hotel mode
•insert USB
•choose ‘Copy USB toTV’
•follow instruction as shown on the units
•once finish, switch ‘OFF; the unit
•pull out USB from unit
Private InformationSelect private information for VIERA CastisKeepor
Reset if Hotel mode is set to[On] whenTVpower on
Selection :
Keep/Reset
• Keep: private information for VIERA Cast is keep
• Reset: private information for VIERA Cast is
reset
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TH-43E410T TH-49E410T
6Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing
6.1.Check of the IIC bus lines
6.1.1.How to access
6.1.2.Self-check indication only
Produce TVreception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control
for more than 3 seconds.
6.1.3.Self-check indication and forced to factory shipment setting
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remotecontrol for more than 3 seconds.
6.1.4.Exit
Disconnect the AC cord from wall outlet.
6.1.5.Screen display
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TH-43E410T TH-49E410T
6.2.Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality occurs, the protection circuit will operate and reset the unit to stand by mode. During this time, the
defective block can be identified by the number of blinking times of the Power LED on the front panel of the unit as follow:
PriorityNameFactorR_LED Blink
1BL_SOSSOS from PANEL inverter1
2TV_SOSTCON power down3
3SOUND_SOSSOS from audio AMP9
6.3.Method of detecting SOS
1.BL_SOS Detection beginning after one second pass from ‘BL_ON’=ON
2.TV_SOSDetection beginning after one second pass from ‘AMP_SHUTDOWN’=ON
3.SOUND_SOSDetection beginning ‘AMP_SHUTDOWN’=ON
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6.4.LCD Panel test mode
Purpose:
To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed.
How to Enter:
While pressing [VOLUME ( - )] button of the main unit, press [OPTION] button of the remote control three times within 2
seconds.
How to Exit:
Disconnect AC plug from wall outlet.
How to confirm:
If the abnormal picture is displayed, go into LCDPanel test mode to display the several test patterns.And then, judge by the following method.Still abnormal picture is displayed: The cause must beinLCD Panel.Normal picture is displayed: The cause must be in A board.
Remarks:
The test pattern is created by thecircuit inLCD Panel.In LCD Panel test mode, this test pattern is displayedunaffected by signal processingfor RFor input signal.If the normal picture isdisplayed, LCD Panel must be okay and the causeof failuremust be in A board.
6.5.No Power
First check pointThere are following2states of No Power indication by power LED.
1.No lit
2.Redis lit then turns red blinkinga few seconds later. (See 6.2.)
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7Disassembly and Assembly Instructions
7.1.Speaker Ass’y (TH-43E410T)
1. Fix sp bracket.
2. Install sp unit.
NoPart NoDescriptionQtyUOM
01TKP5ZA52901 SP_BRACKET4PC
02L0EYAA000068 SPEAKER_UNIT2PC
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7.2.WIFI & LED Panel Ass’y (TH-43E410T)
Assemble led panel ass'y and install to cabinet.
TH-43E410T TH-49E410T
NoPart NoDescriptionQtyUOMRemarks
01TKP5ZA41701 LED PANEL CASE1PC
02TKK5ZC50501ALED PANEL1PC
03K-BOARD1PC*Refer to chassis part list
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7.3.PCB & AV Bracket Ass’y (TH-43E410T)
1. Fix A,P-board and key button bracket.
2. Install av brackets.
NoPart NoDescriptionQtyUOMRemarks
01A-BOARD1PC*Refer to chassis part list
02P-BOARD1PC*Refer to chassis part list
03TBX5ZA03303A KEY_BUTTON_BRACKET1PC
04TMK4GA332 FELT(W10 L50 T0.55) 1PC
05TMK4GA477 FELT(W10 L130 T0.35) 1PC
06TMX5ZE0041 CHASSIS BRACKET A-PCB 1PC
07TKP5ZA32202SIDE_AV_BRACKET1PC
08TES5ZA001GROUND SPRING1PC
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7.4.Vesa & Bottom Metal Ass’y (TH-43E410T)
1. Fix barrier.
2. Install vesa metal & bottom metal.
3. Tape felt at bottom panel.
TH-43E410T TH-49E410T
NoPart NoDescriptionQtyUOM
01TUX5ZX1061 BOTTOM METAL L1PC
02TUX5ZX1071 BOTTOM METAL R 1PC
03TUX5ZX0371 VESA METAL4PC
04TMK5ZX266 BARRIER1PC
05TMK4GA206 FELT(W10 L95 T0.35)2PC
06TMK4GA332 FELT(W10 L50 T0.55)1PC
07TZLP152KHAA2 ASSY 43 IN-HOUSE PANEL1PC
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7.5.Label (TH-43E410T)
Stick labels and sticker follow accordingly. (rub evently at least twice)
NoPart NoDescriptionQtyUOM
01TBM4GD8564MODEL_NAME_PLATE1PC
02TBM4GU3151 SIDE_BUTTON_LABEL1PC
03 TBM4GU113ADJUSTMENT SHEET1PC
04 TQF4GB008DIGITAL LICENSE LABEL1PC
05 T5EL0919QFILAMENT TAPE1PC
06 TQF4GB007ENERGY RATING LABEL1PC
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7.6.Pop Sticker (TH-43E410T)
TH-43E410T TH-49E410T
NoPart NoDescriptionQtyUOM
01TQFT877 POP STICKER1PC
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7.7.Fan Bag Ass’y (TH-43E410T)
1. Insert all part into cover for fan bag.
2. Direction and sequence (depend by model - Refer part list for detail).
3. Fold cover for fan bag and stick with yellow masking tape.