Panasonic TH-43DX400K User manual

© Panasonic Corporation 2016.
ORDER NO. MTV1609089CE
LED TV
Model No. TH-43DX400K
TH-43DX400S
TH-43DX400T
Destination : K: Malaysia
S: Singapore
T: Thailand

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TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions -----------------------------------------------3
1.1. General Guidelines ----------------------------------------3
1.1.1. Leakage Current Cold Check ----------------------3
1.1.2. Leakage Current Hot Check (See Figure 1.) ----- 3
2Warning--------------------------------------------------------------4
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices ----------4
2.2. About lead free solder (PbF) ----------------------------5
3 Service Navigation------------------------------------------------6
3.1. Service Hint--------------------------------------------------6
4 Specifications ------------------------------------------------------7
5 Test and Alignment-----------------------------------------------8
5.1. Factory Setting----------------------------------------------8
5.1.1. ADC Adjust----------------------------------------------9
5.1.2. Picture Mutuality ------------------------------------- 10
5.1.3. Audio Mutuality--------------------------------------- 11
5.1.4. Non-Linear -------------------------------------------- 11
5.1.5. VIF Initialization -------------------------------------- 11
5.1.6. System Setting --------------------------------------- 11
5.1.7. Panel Control ----------------------------------------- 12
5.1.8. Others -------------------------------------------------- 12
5.1.9. Customer Setting ------------------------------------ 12
5.1.10. CI Factory Setting ----------------------------------- 12
5.2. MSD6488 Software Upgrade Instruction ----------- 13
5.2.1. Upgrade bin file -------------------------------------- 13
5.2.2. USB upgrade procedures for TV set ----------- 13
5.3. Hotel Mode------------------------------------------------- 14
6 Troubleshooting Guide---------------------------------------- 16
6.1. No Power. -------------------------------------------------- 16
6.2. No Display / Black Panel. ------------------------------ 17
6.3. No Back Light. -------------------------------------------- 18
6.4. No Sound.-------------------------------------------------- 19
6.5. Signal source no function ------------------------------ 20
6.6. Abnormal Display ---------------------------------------- 21
6.7. No Tuning Channels------------------------------------- 22
7 Disassembly and Assembly Instructions --------------- 23
7.1. Panel and Sponges-------------------------------------- 23
7.2. Main Board and AV Brackets-------------------------- 24
7.3. Install PCB ------------------------------------------------- 25
7.4. LVDS Cable------------------------------------------------ 26
7.5. Key Button Ass’y ----------------------------------------- 27
7.6. Speaker Assy --------------------------------------------- 28
7.7. WIFI and B/C Cushion ---------------------------------- 29
7.8. Back Cover Screw --------------------------------------- 30
7.9. Label--------------------------------------------------------- 31
7.10. Handling SPEC ------------------------------------------- 32
8 Measurements and Adjustments -------------------------- 33
8.1. Key Check Points ---------------------------------------- 33
8.2. Power Flow Diagram ------------------------------------ 34
9 Block Diagram --------------------------------------------------- 35
9.1. System Block Diagram---------------------------------- 35
9.2. Circuit Block Diagram ----------------------------------- 36
10 Wiring Connection Diagram --------------------------------- 37
10.1. Wire Dressing --------------------------------------------- 37
11 Schematic Diagram--------------------------------------------- 38
12 Exploded View and Replacement Parts List ----------- 50
12.1. Parts Location--------------------------------------------- 50
12.2. Packing Instruction--------------------------------------- 51
12.3. Replacement Partlist------------------------------------ 52

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1 Safety 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 following leakage current checks to prevent the customer from being exposed to shock hazards.
4. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.
5. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the
wires have been broken or disconnected, do not attempt to repair or re-wire the units. Replace the entire wiring unit instead.
6. When conducting repairs and servicing, do not twist the Faston connectors but plug them straight in or unplug them straight
out.
1.1.1. Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the
two prongs on the plug.
2. Measure the resistance value, with an ohmmeter,
between the jumpered AC plug and each exposed
metallic cabinet part on the equipment such as
screwheads, connectors, control shafts, etc. When the
exposed metallic part has a return path to the chassis, the
reading should be 8.5Mohm to 13Mohm.
When the exposed metal does not have a return path to
the chassis, the reading must be .
1.1.2. Leakage Current Hot Check (See
Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use
an isolation transformer for this check.
2. Connect a 1.5kohm, 10 watts resistor, in parallel with a
0.15μF capacitors, between each exposed metallic part
on 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 more
sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the
voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of
the above measurements.
6. The potential at any point should not exceed 0.75 volts
RMS. A leakage current tester (Simpson Model 229 or
equivalent) may be used to make the hot checks, leakage
current must not exceed 1/2 milliamp. In case a
measurement is outside of the limits specified, there is a
possibility of a shock hazard, and the equipment should
be repaired and rechecked before it is returned to the
customer.
Figure 1

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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 typical ES devices are integrated circuits and some field-effect transistors and
semiconductor [chip] components. The following techniques should be used to help reduce the incidence of component damage
caused by electrostatic discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for 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 solder removal device. Some solder removal devices not classified as [anti-static (ESD protected)] can
generate electrical charge sufficient 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. (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 floor can generate static electricity (ESD)
sufficient to damage an ES device).

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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 due to environmental conservation issues. For service and repair work, we’d
suggest the use of Pb free solder as well, although Pb solder may be used.
PCBs manufactured using lead free solder will have the PbF within a leaf Symbol PbF stamped on the back of PCB.
Caution
• Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please
use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).
• Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).
If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb
solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
• After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto the
opposite side. (see figure below)

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3 Service Navigation
3.1. Service Hint
Board Name Main Device Remarks
A BOARD Main Board
All boards are non-repairable and should be
exchanged for service
P BOARD Power Board
IR BOARD Remote, Key

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4 Specifications
Note
• Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.
Model No. : TH-43DX400K / TH-43DX400S / TH-43DX400T
Screen size - diagonal 109 cm
Screen resolution 3 840 x 2 160
Audio output power (L+R) 8 W +8 W
Working voltage: 100 - 240 V ~ 50/60 Hz
Rated power consumption 100 W
Dimensions (W xH xD) 973.2 mm x 206.8 mm x 604.5mm
Net weight 9.5 Net
Environment
(only for Tropical climates zone)
Working temperature : 5°C ~ 45°C
Working Humidity : 20 % ~ 80 %
Storage temperature : -15°C ~ 50°C
Storage Humidity : 10 % ~ 90 %
Environment
(only for Moderate+ climates zone)
Working temperature : 5°C ~ 35°C
Working Humidity : 20 % ~ 80 %
Storage temperature : -15°C ~ 45°C
Storage Humidity : 10 % ~ 90 %
Channel Coverage 48~864 MHz full range of RF Input
System TV PAL / BG / DK, PAL-I, NTSC-M
AV PAL, NTSC, SECAM
Preset programme ATV 100
DTV 1000
Status displaying method On screen display
Function adjustment indicator Menu display
Language of OSD English / Thai / Vietnamese / Indonesia / Chinese / Myanmar
RF aerial input 75 ohm unbalanced
AV video input 75 ohm, 1.0 Vp-p, RCA
Built - in wireless LAN Standard compliance and Frequency range
IEEE802.11. b/g/n
2.40 GHz - 2.4835 GHz
Security
WPA2-PSK (TKIP/AES)
WPA2-PSK (TKIP/AES)
WEP (64bit/128bit)

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5 Test and Alignment
5.1. Factory Setting
• Press AV button and follow with key 3, 1, 9, 5 one by one.

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5.1.1. ADC Adjust
• Press ▲/▼button, choose ADC Adjust and press OK button to enter.
Before adjusting, enter the channel you want to adjust and input adjust signal (YPBPR channel: 576P and 720P with 100% color
bar; VGA channel: 1366*768 with tessellated white and black ). Select ADC Tune, press ►button to auto adjust the ADC value.
Note:
1. The YPBPR and PC’s Auto White Balance adjust (AUTO ADC) must be done on the product line.
2. In YPBPR channel ,must adjust the SD and HD two modes.

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5.1.2. Picture Mutuality
No Item Description
1W/BAdjust Select W/B Adjust , go to the “MODE” item to select the channel which
you want to adjust then select TEMPERATURE (Medium, Warm,
Cool). Then press ▼button to go to the items you want to adjust:
R-GAIN
G-GAIN
B-GAIN
R-OFFSET
G-OFFSET
B-OFFSET
Press◄/►buttons can adjust the value to the best effect.
COPY ALL : Copy the values to all source!
2 Picture Mode No adjust.
3 OverScan Select OverScan , go to the “input source” item to select the channel
which you want to adjust. Then press ▼button to go to the items you
want to adjust:
Left Crop
Right Crop
Up Crop
Down Crop
Press◄/►buttons can adjust the value to the best effect.
4 QMAP Adjust No adjust.

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5.1.3. Audio Mutuality
• No adjust.
5.1.4. Non-Linear
• No adjust Press OK button to choose a backlight, volume, brightness,contrast, saturation,sharpness,hue and so on, press ◄/►
buttons to nonlinear adjustment.
5.1.5. VIF Initialization
• No adjust.
5.1.6. System Setting
No Item Description
1 Brightness Adjust the Brightness Curve.
2 Contrast Adjust the Contrast Curve.
3 Saturation Adjust the Saturation Curve.
4 Hue Adjust the Hue Curve.
5 Sharpness Adjust the Sharpness Curve.
6 Volume Adjust the Volume Curve.
7 Backlight Adjust the Backlight Curve.
No Item Description
1HOTKEY Press ◄/►button to switch factory hotkey on or off. For shipping
condition, this item should be off.
2 AGING MODE Press ◄/►button to switch aging mode on or off. When aging mode is
on, press EXIT button to exit this mode.
3 Default Country No adjust.
4 POWER ON MODE Press ◄/►button to switch AC power on status. Memory is power on
memorized, Seconda is power on standby, Direct On is power on
always.
5 Country Setup No adjust.
6 PQ FILE...update No adjust.
7 HDCP Key Update No adjust.
8 CI Plus Key Update No adjust.
9 IP Enable Mapping No adjust.
10 Mac Addr Update No adjust.
11 3D No adjust.
12 Linux TimeSource No adjust.
13 Channels No adjust.
14 SKY factory channel preset No adjust.
15 Burn MAC Press OK button from U disk write MAC.
16 Burn HDCP KEY Press OK button from U disk write HDCP KEY.
17 Burn WIDI KEY Press OK button from U disk write WIDI KEY.
18 Burn CI KEY Press OK button from U disk write CI KEY.
19 Burn ALL(MAC HDCPKEY WDID CI
KEY)
Press OK button from U disk write MAC ,HDCPKEY, WDID and CI
KEY.

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5.1.7. Panel Control
5.1.8. Others
5.1.9. Customer Setting
5.1.10. CI Factory Setting
• No adjust.
No Item Description
1 WHITE PATTERN No adjust. For shipping condition, this item should be off.
2 SSC Setting Press OK to set the appropriate EMC values.
3 6M30 SSC Setting No adjust.
4 Gplus Mode No adjust.
No Item Description
1 Uart Enable Press◄/►button to switch Uart Enable on or off.
2UartBUS Press◄/►button to switch Uart BUS on or off.
3 Uart Msg Setting No adjust.
4 Restore to Default Press OK to execute factory reset.
5 AVD PAPAMETER No adjust.
6 WDT No adjust.
7 Mount Config No adjust.
8 Customer Info No adjust.
9 Unique Key Reencrypt No adjust.
10 PIP/POP No adjust.
11 PVR-Record All No adjust.
12 SECURE WRITE No adjust.
13 RAM Log No adjust.
14 SW Information No adjust.
15 Update Logo No adjust.
16 Backup Date No adjust.
17 Restore Date No adjust.
No Item Description
1 Gamma Table No adjust.

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5.2. MSD6488 Software Upgrade Instruction
5.2.1. Upgrade bin file
The file name of the upgrade bin is “MstarUpgrade.bin” for USB upgrade.
5.2.2. USB upgrade procedures for TV set
1. Copy the software to the root directory of a USB memory stick. Plug the memory stick to USB port of target TV set.
2. Select ‘Software Update(USB)’ on OSD and press OK button to start software update. TVwill reboot automatically when
upgrade finishes.
3. If the process stop at 19% and TV reboot, it means the software of both TV set and USB memory stick is the same.

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5.3. Hotel Mode
• Enter Hotel Mode: MENU+7906
Enter Hotel Mode State:

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No Item Description
1 Hotel Mode Press◄/►button to turn on or turn off hotel mode.
2 Initial INPUT Press◄/►button to switch power on source.
3 Initial POS Only available when Initial INPUT switch to ATV. Press◄/►button to
set power on TV channel.
4 Initial VOL Level Press◄/►button to set power on volume.
5 Maximum VOL Level Press◄/►button to set maximum volume user can adjust.
6 Button Lock Press◄/►button to lock or unlock panel buttons.
7 Remote Lock Press◄/►button to lock or unlock remote control. When on, only
hotel mode is available
(MENU+7906).
8 Auto Power On Press◄/►button to set power on status. Last is power on memorized,
Off is power on standby,
On is power on always.
9 RS232 Press◄/►button to switch RS232 on or off.
When RS232 switched to on, TV system need to reboot and Uart BUS
in factory menu should be switched to On.
For command ‘Power ON’ which is only available when monitor is
turned off, Baud rate is ‘38400’, for other commands, Baud rate should
be ‘115200’.
10 LOGO Press◄/►button to switch LOGO on or off.
11 BL A OUT Press◄/►button to switch BLA OUT on or off.
12 Speaker out Press◄/►button to switch Speaker out on or off.
13 Ear Out Audio Press◄/►button to to select the FIX or VAR model.
14 Ten Key/CH Key Press◄/►button to Ten Key/CH Key on or off.
15 Input Select Mode Press OK to enter Input Select Mode. User can turn on or turn off input
source in input menu.

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6 Troubleshooting Guide
These flow charts may not match every single defeat TV set, but they can give you useful advices when you meet the same defeats
described on the titles below.
Terms:
• IR: Infrared Receiver
• RC: Remote Control
• IR logic: IR blink with RC action
• LVDS: Low Voltage Differential Signal, output from processor and input for panel
• O/C: Open Cell, panel with source board
• BL: Back Light,light source for panel module g,g f p
• LB: LED (Light Emitting Diode) Bar, light source for BL module
• VBL: Voltage for Back Light (before Boost)
• VLED: Voltage for LED (after Boost)
• OVP: Over Voltage Protection
• OSD: On Screen Display
•AMP:Amplifier
6.1. No Power.

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6.2. No Display / Black Panel.

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6.3. No Back Light.

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6.4. No Sound.

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6.5. Signal source no function