DVD Home Theater System LG LHD625 troubleshooting – PCB level – firmware update procedure, SMPS and Audio output schematic and voltages

LG (LHD625, S63S1-S, S63T1-C, S75T1-W) AMPLIFIER: Stereo mode 167 W + 167 W (3 Ω at 1kHz)

Hidden key mode

DISPLAY SYSTEM INFORMATION
1) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
- Do not insert disc or USB at the set.
2) Go to SETUP menu by pressing SETUP button in HOME menu.

3) Move highlight at "DISPLAY > TV Aspect -> 16:9".

4) Press "1 > 3 > 9 > 7 > 1 > 3 > 9 > ENTER" in order.
5) and then, system reset menu is displayed

6) Power off and on by pressing POWER key.

EEPROM EDIT
1) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
- Do not insert disc or USB at the set.
2) Press "PAUSE > 1 > 4 > 7 > 2" in order.
3) and then, option setting menu is displayed.
You can see 10 bytes option value.

4) Move a cursor by pressing Arrow < > key.

5) Press number 0 ~ 9, character a ~ f (1 ~ 6 for a while) for more than 5 seconds
6) Press "PAUSE" key to exit option setting menu.
After change option value, you need to make system reset.

DOOR LOCK / UNLOCK
1) Press Front “STOP” + Remote control “STOP” for more than 5 seconds.
2) “LOCKED” / “UNLOCKED” display on the VFD.

FIRMWARE UPGRADE

MPEG
1) Copy firmware to USB (Do not change file name).
Ex) LG_LHD655LD7_1501051.rom
2) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
3) Inset USB device which includes firmware.
4) Firmware is detected automatically and then, shows blue screen in TV.
 If home menu is maintained after inserting USB, press music icon.

5) Take off the USB and press PLAY key.

6) and then, upgrading get started.
- Do not turn off the set or uplug the unit from mains power sourse until upgrade is finished.
7) After finishing firmware upgrading, set will restart automatically.
8) Power off and on again by pressing POWER key.

AUDIO MICOM
1) Copy firmware to USB (Do not change file name).
Ex) LHD655_1501050.HEX
2) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
3) Inset USB device which includes firmware.
4) Firmware is detected automatically and then, shows blue screen in TV.
 If home menu is maintained after inserting USB, press music icon.

EQ
1) Copy firmware to USB (Do not change file name).
Ex) EQ_PRG.BIN
2) Change function to DVD/CD by pressing input key, and wait until home menu is shown.
3) Inset USB device which includes firmware.
4) Firmware is detected automatically and then, shows blue screen in TV.
 If Home menu is maintained after inserting USB, press music icon.

5) Upgrading is started.
- Do not turn off the set until upgrade is finished.
- Do not pull out the USB device using firmware upgrading.
6) After finishing firmware upgrading, set will be turned off.

NO POWER PROBLEM
No power problem occurs when you power on the unit.

Fuse & Bridge diode
Replace F901, BD901 on SMPS board.
1) Look at the physical state of fuse F901.
2) Check the bridge diode BD901.

No power problem occurs when you power on the unit.

VFD, 14 VA, 5.5 VA
Replace D922, D923, D924, D925, D926, D927, IC901.
Case 1) FLD abnormal: Check D950, D951, ZD951, ZD952, FR950 and replace it.
Case 2) 5.5 VA abnormal: Check D952, D953 and replace it.
Case 3) 14 VA abnormal: Check D955, D956 and replace it.
Case 4) All voltage abnormal: Check IC901 and replace it.

NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE ON FRONT PANEL
When you turn on your set, it will blank / no message on front panel, and stand-by LED no working.
IC103 (No 3.3 VA)
Replace IC103 on MAIN board.
 1) Check 3.3 VA of IC108.
2) If 3.3 VA is abnormal, please check 5.5 VA of IC103 pin1.
3) If 5.5 VA is OK, but 3.3 VA is abnormal, replace IC103.

When you turn on your set, it will blank / no message or Welcome on front panel, and it will not boot-up.

IC105 System 3.3 V (No System 3.3 V)
Replace IC105 on MAIN board

How to troubleshoot
1) Please check 5.5 VA of IC105 pin3 (VIN).
2) If 5.5 VA is abnormal,  check SMPS 5.5 VA.
3) If 5.5 VA is OK, but 3.3 V is abnormal at the IC105 pin6 (VOUT), replace IC105.

When you turn on your set, it will display “WELCOME” on front panel, and it will not boot-up normally.

Xtal 500
Replace X500 on MAIN board.

1) Check the soldering status of 27 MHz crystal (X500).
2) Check the frequency of 27 MHz crystal (X500).
3) If the crystal doesn’t oscillate, replace X500.
4) After changing it, if the set is still not booting :
- Check Serial Flash IC (IC504)
- Check SDRAM IC (IC503)
- Check MT1389 IC (IC500).

When you turn on your set, it will display “WELCOME” on front panel, and it will not boot-up normally.

IC503 (SDRAM MEMORY)
Replace IC503 on MAIN board.

1) Check 3.3 V IC503.
2) If it doesn’t work even though IC105 is no problem, IC503 (DDR memory) could have problem.
3) After changing it, if the set is still not booting : Check MT1389IC

When you turn on your set, it will display “WELCOME” on front panel, and it will not boot-up normally

IC500 (MPEG IC)
Replace IC500 on MAIN board.

1) Check 1.2 V of C510 on main board.  Check 3.3 V of C548 on main board.
2) If it doesn’t work even though IC105 is no problem, IC500 (MT1389) could have problem.

BAD HDMI VIDEO / AUDIO OUTPUT
When unit is connected to HDMI TV using HDMI cable, picture shows bad color, no output or mixed color on the screen. But component output is OK.

JK501 (HDMI JACK)

Replace JK501 (HDMI Jack)

1) Check JK501 pin soldering.
2) If there is short soldering on pin JK501, re-soldering pin JK501.
3) If problem still occurs, check HDMI data.
- If all data OK, replace JK501.
- If data NG, check set on BD mode :
Replace IC500

NO AUDIO FROM SPEAKER
When unit is connected to speaker, no audio from speaker

IC601 (PWM IC)
Replace IC601 (PWM IC).

How to troubleshoot
1) Check IC601 pin soldering.
2) If there is short soldering on pin IC601, re-soldering pin IC601.
3) If problem still occurs, check AMP IC (IC700, IC701, IC702).
- Check IC700, IC701, IC702 pin soldering.
- If soldering OK, check the AMP heat sink :
Replace IC700, IC701, IC702

BT connection error

BT module
Replace BT module on Main chassis

1) Check your BT device. Make sure that BT function is on-state.
2) If it is OK, please check the CN201.
3) If there is soldering problem, please re-soldering pin CN201.
4) If after re-soldering problem still occurs, replace BT module.
5) If problem still occurs after change BT module, check MT1389 IC (IC500)

SMPS – Audio output and voltage chart

TCL32T3510 LCD TV How to enter the service menu and software update details, genera; troubleshooting

Test & Alignment: Pre-Conditions and DC/DC Check

Before power on, please check the board according to the relevant block diagram and circuit diagram, and make sure that no serious issue or mistake can destroy the board. For example, the output of DC/DC and LDO should not be shorted to ground.
Supply a suited voltage and power-on, then check the voltage according to the relevant block diagram, circuit diagram and voltage specification within 5% margin.
For example, check SoC voltage (AV3V3, VCCK-1V2, etc.), DDR voltage (DDRV) , amplifier voltage (Main_Power), etc… Only the standby voltage is necessary if there is no software in the flash.

SW Image download
Download the latest release SW from below FTP server:
* Link:xxxxx
* Username: xxxxx* Password: xxxxx* Folder: xxxxx

OAD Transport Stream Image
To manage quicker mass reflashing, a predefined OAD DVB-T channel (freq:850MHz / bandwidth:8MHz) is embedded to SW core and only available into Factory mode. Some licensed IBL tools ('xxx2lli.exe', 'lli2dsm.exe',
dsmmerge.exe, …) from Intellbyte Inc. might be necessary to create appropriate DVB SSU TS. Over some predefine settings such as repeated datablock insertion, null packets size, … (controllable in configuration file), here below are mandatory OUI entries structure to prepare DSM-CC carousel image format:

Note ⑴: SW Entry are referring to following PKG image file name “V8-0MT310x-LF1Vyyy.pkg”
Note ⑵: See enclosed necessary Data Broadcast Carousel configuration file format details (DBC)

OUI Entry	MT31L	MT31B	MT31LB
CUST_OAD_OUI	408BF6	408BF6	408BF6
CUST_OAD_HW_MODEL	0x5881	0x5881	0x5881
CUST_OAD_HW_VERSION	0x0001	0x0001	0x0001
CUST_OAD_SW_MODEL (x)	0x3101	0x3102	0x3102
CUST_OAD_SW_VERSION (yyy)	0x0xxx	0x0xxx	0x0xxx

To build an OAD TS, it’s necessary to create a temporary common and interchangeable DSM file format using below command and arguments:

‘bin2dsm.exe -v -v -v -m0,0,"TCL_HW5881",0 -n200 -z102400 -nz -o%FILE%.dsm -h"OUI=CUST_OAD_OUI
model=CUST_OAD_HW_MODEL version=CUST_OAD_HW_VERSION vm=0xffff" -s"OUI=CUST_OAD_OUI
model=CUST_OAD_SW_MODEL version=CUST_OAD_SW_VERSION vm=0xffff" %FILE%.pkg’
Then, OAD TS can be completed using below command and arguments:
‘dsmsectn.exe -v -dvbssu -mpegts -patpmt -nit_ter -sdt -o%FILE%.ts -gTCL_HW5881.dbc %FILE%.dsm’
For more robustness, TS can be played with following presets such as modulation:QAM-64, guard interval:1/8, coding rate:2/3 to ensure ~22Mbps.
OAD reflashing process is managed within 4 steps operation: multiplex detection, DVB transfer, flashing and warm-start.

UART & IR Parser
To use both UART and/or IR parser, TV has to be set in Factory mode with its VGA port well connected to suitable UART device or an IR emitter device correctly facing up TV (see below “Product Assembly - section 2.0”
how to activate “Factory key”).
The SoC’s RS232 mode is automatically enabled at power-on and doesn’t require any command initialization frame. <0x30 0x30 0x30 0x2E 0x30 0x65 0x30 0x74 0x30 0x0D 0xE2> from host to TV.
So correctly setup UART parser engine for further serial communication, it’s necessary to send following command frame <0xAA 0x06 0x10 0x01 0xA7 0xEF> within following COM presets 115200/8/n/1; “PS” caption might be toggled and displayed on bottom left screen (“S” like Serial) if successful.
To communicate with TV depending on SIACP revision layout implementation, you may need to fulfill UART/IR commands protocol and format described on enclosed SIACP requirements document (rev. v5.9).

ProjectID Modification
There are different IDs stored into system memory depending on different Panels settings and Models features, but there’s only one key branching ProjectID that includes all. So, it’s not recommended to modify PaneID with
Hyper terminal as other ID features may not change.
To modify ProjectID, you need to go through “Factory menu > Other > Project info > Project ID”, and then spin left or right with RCU “◄/►” key” keys to suitable ID (Project name is dynamically refreshed)

Here below is none exhaustive ProjectID table for reference. Project list and all relative information are dispatched and updated as a new firmware package is released.

Project Name	Project ID	Panel
L39F3303F	001	PANEL_CMI_V390HJ1-P02
L39F3393F	002	PANEL_CMI_V390HJ1-P02
L32F3303	003	PANEL_SS_LSC320AN02
L32F3393	004	PANEL_SS_LSC320AN02
39FU5253C	005	PANEL_CMI_V390HJ1-LE1
39FU5253CW	006	PANEL_CMI_V390HJ1-LE1
39FU5243C	007	PANEL_CMI_V390HJ1-LE1
55FU4243C	008	PANEL_SS_LSC550HJ03_8
32HU5253C	010	PANEL_SS_LSC320AN02
32HU5253CW	011	PANEL_SS_LSC320AN02
32HU5243C	012	PANEL_SS_LSC320AN02
…
L28T3540	087

 Functional Test

Once the boards (chassis, KB, IR, PSU…) and the panel are well interconnected, plug all suitable signals generator to relevant below inputs/outputs using respective test patterns format to check picture/sound quality:

Picture/Video formats and Audio tones can be changed by the factory according to their own standard and broadcasted signals (ie: 1KHz & 3KHz, sweep, …)

AD Calibration Test
N/A
As SoC as built-in A/D self-calibration mechanism, there’s not any ADC to perform.

DDC & EDID & T-Link Test
The E-EDID data structures are according to VESA Enhanced EDID 1.4a (and EIA/CEA-861B for HDMI)..
All VGA and HDMI structures have their own BIN profile which are part of firmware and uploaded at power-on.
For EDID check, it’s recommended to check whether the correct EDID is uploaded by checking corresponding
EDID NVM Checksum or read them out to check bit by bit if it is in line with the released EDID bin file.

How to upgrade HDCP KEY by UART

For HDCP compliancy, it’s needed to check whether the HDCP key has been well set by connecting suitable generator signal

IP Return Test

 “How to upgrade MAC address using USB”
All MT31 series platform support IP return function according to CI+ v1.3.
Here are some representative code example:

MAC Address

40-8B-F6-90-4D-53

Note: Testing method is under completion.

Factory Menu (Service mode)
Follow the below steps to pop-up the Factory menu in case of “Factory Key” is disabled:
* Press RCU “MENU” key to display main menu
* Select “Picture” and press “OK” key to enter into Picture submenu. 

Scroll down to “Contrast” item.

* Press the sub-sequence RCU keys “9” “7” “3” and “5”
In case of “Factory Key” is enabled, just press RCU “Return” key to pop-up again the Factory menu.
The status of “Factory Key” can be changed in “Factory Menu > Hotkey”
Press RCU “OK/►” key to enter the submenu.
Press RCU “Menu” key to go back to the root menu.
Press RCU “◄/►” key to change the values.
Press RCU “OK” key run the function.
Press RCU “Exit” key exit the Factory menu.

Factory Captions

While “Factory Key” is enabled, there’re some toggled display information (2s) relative to SW, ProjectID, CI+, NetworkID to facilitate 100% quick screening without accessing to whatever else menu:

Firmware Version (MV) - ‘V8-0MTxxxx-LF1Vyyy’
Project ID (ID) - range [000..999]
CI Key Activation flag (CI+) - ‘NO’= no key, ‘YES’= key activated
HDCP Key (HDCP) - ‘NULL’= no key, ‘YES’= key activated
PVR flag (ERG) - ‘OFF’= disabled, ‘ON’= enabled
P (Production/Factory mode flag) / S (Factory UART Parser mode flag) / W (Warm-Up mode flag).

Channel Map Preset
Region channel Maps are stored in the firmware and can be directly preloaded via Factory menu.
Other faster methods via UART/IR commands are available on enclosed SIACP requirements.

Factory Menu Description: Warm-up Test
Following TCL standard and practices, it’s required minimum 15min of Warm-Up that can be considered as Burn-In. Additional Aging for White Balance alignment is no more necessary due to consistent Picture Performance
with Cloning usage.
This function is accessible by selecting “Factory menu à Burning Mode”, pressing RCU “OK/►” key, to release/disable Burn-in mode, it’s just required to press “Menu” button from local keyboard. Other faster methods
via UART/IR commands are available on enclosed SIACP requirements.

White Balance (WB) Cloning; White Balance Touch-Up (Golden sample)
As some color coordinates discrepancies can be noticed from panel batches to others, it may necessary to perform slight touch-up.
For Color temperature adjustment, switch TV on leading HDMI input where should be connected suitable generator providing following format 1280x720p@60Hz test pattern. A 32 step grey scale is recommended to assess relevant colorimetry tracking and low/high light saturation points.

Make sure Picture Preset is set to “DYNAMIC” mode, both “Contrast” and “Backlight” bar graph are set to “100” (maximum), “Gamma” bargraph are set to “0” (2.2 nominal) and that both “Energy Saving” and “Light Sensor” are set to “Off” from “ECO Settings” subsection.
Ensure that TV is in Factory mode to access to ”White Balance” adjustment submenu, and then scroll down to toggle off “Pic. Enhance” flag.
PC VGA, CMP YPrPb, SCART RGB, CVBS_PAL/SECAM Gain/Offset matrix offsets locations are relative to HDMI/DTV.
Warm and Cool Tone are relatives to Normal mode. WB adjust need to fix default G Gain .
“Gain” registers set need to be adjusted at 70IRE.
“Offsets” registers set can be adjusted at 30IRE, but it’s not recommended to keep them defaulted.
Note: All matrix offsets locations can be individually fine-tuned.

Targets and Tolerances for all inputs
Note: The White balance value is right conformed by PQ Engineer , Except PQ Engineer, anybody cannot change the white balance value and Default value.
The measured and adjustable parameters should be mainly “x”, “y” coordinates (see “TCL EU Picture Quality Requirements for FPDs” for reference).
The signal level check has been down in R&D, Factory should not adjust the scaling Brightness , scaling contrast and scaling saturation.
The White Balance alignment should be performed using a well calibrated and contact less analyzer (ex: CA310).

 The analyzer may not touch the screen surface, and measurement must be performed in a dark environment keeping the probe(s) at 90+/-2° from the panel center.
The results should fulfill following TCL matching requirements (Minolta CA210-CH00 based):

Cloning
To operate master/golden clone and reuse it further on demand, please to follow below Cloning SOP:

All underused BIN image files need to be used strictly with MT5531 SoC platform as depending on SW structure.
Other faster access methods via UART/IR commands are available on enclosed SIACP requirements.

High Pot. and Insulating Resistance Tests

At the end of the process, a “High Voltage” and an “Insulating Resistance” tests are required to fulfill Safety Electrical requirements (CEI 65065)

High Voltage Withstanding requirements > Insulating Resistance requirements
* “Voltage” > 3500 VAC - “Voltage” > 500 VDC
* “Max Leakage Current” > 10 mA - “Threshold Min” > 4M Ω
* “Test Time” > 5 sec - “Test Time” > 3 sec

SHOP-END Test
At final process stage, it’s necessary to perform “Reset shop” before any packing to leave Factory mode and restore User default presets.
This function is accessible by selecting “Factory menu àReset Shop”, then pressing RCU “OK/►” key. Other faster methods via UART/IR commands are available on enclosed SIACP requirements.
“Reset Shop” presets should follow “MT5531_EU_OOB_MenuSetting_step1_Base_01.doc” document.
Note: A password might be required in case of Parental Control function is locked, use default “1234” password or “0423” super password to clean-up existing ones if forgotten.

How to upgrade SW FLASH using MTK tool

Connect UART interface to suitable manufacturing TV input connector (note that PC connector requires TVs on “Factory mode”)
Launch MTK tool with version above v0.6.7
Set right SoC template (ex: MT53xx)

Select “Tool” button.

Press “Browse” button to select the corresponding SW bin file to upload (ex: V8-0MT3101-LF1Vxxx.bin)
Supply the SSB to required voltage.
Press “Upgrade” button and appear the below picture.

Select NOR flash type and press “OK” button to start downloading the SW and wait the gauge displayed “100%” that means the SW has been successfully downloaded.  In the meanwhile, all operations such erasing flash and so… are parsed into the debug window script.

When upgrade is completed, remove UART connection.
Restart SSB (chassis) or TV and wait few seconds for EEPROM update.
Remember to perform “Factory menuàReset ALL“ and then press RCU “OK/►” key if there’s not any subsequent cloning operation.

How to upgrade FLASH SW using USB: Upgrade with Loader
Power-off or switch TV to standby (LED should light on)
Copy the corresponding SW PKG image (ex: “V8-0MT310x-LF1Vxxx.pkg”) into USB stick (pen drive) root path and rename it to “upgrade.pkg”
Plug USB stick to the TV.

While power-on TV if previously off (LED status off), press “Power” button from local keyboard during few seconds to start upgrading process
Release “Power” button once LED is blinking or USB stick starts blinking, TV is uploading SW BIN image
When reflashing is successful, TV should restart automatically after 2min.
Info: If TV doesn’t restart and LED is lightening on, an error may occurred during flashing, check the set, PKG file integrity and try again from 1st step.
Remove USB stick.
Remember to perform “Factory menuàReset ALL“ or “Factory menuàReset Shop“ and then press RCU “OK/►” key if there’s not any subsequent cloning operation.
Switch off TV by removing AC cord.
Reconnect AC cord to restart TV and wait few seconds for EEPROM update.
Note: If “Reset Shop” was performed, a “Welcome Setup” menu should be displayed, otherwise new SW version should be displayed into relevant Factory mode caption info or on bottom of “Factory menu“

Upgrade without Loader (Customer mode)
Copy the corresponding SW PKG image (ex: “V8-0MT310x-LF1Vxxx.pkg”) into USB stick (pen drive) root path and rename it to “upgrade.pkg”
Plug USB stick to the TV.
TV will automatically detect new SW to upgrade and displays below pop-up message:

Press RCU “OK/►” key to start upgrading process and follow instructions till reflashing is successful.
Remove USB stick.
Remember to perform “Factory menuàReset ALL“ or “Factory menuàReset Shop“ and then press RCU “OK/►” key if there’s not any subsequent cloning operation.
Switch off TV by removing AC cord.
Reconnect AC cord to restart TV and wait few seconds for EEPROM update.
Note: If “Reset Shop” was performed, a “Welcome Setup” menu should be displayed, otherwise new SW version should be displayed into relevant Factory mode caption info or on bottom of “Factory menu“

How to upgrade FLASH SW using OAD

OAD Re-flashing
Power-on TV
Set TV to Factory mode (enable Factory key) and/or Burn-in mode if necessary.
Connect RF antenna or whatever air antenna with suitable amplifier from any digital broadcasting system (ex: DTA-115 Multi-Standard VHF/UHF Modulator.
Play DVB MPEG SSU TS, that includes suitable PKG SW image, with right presets (850MHz/8MHz/…) detailed on above.
Send OAD manufacturing IR code [08d/60d] (refer to SIACP document rev. v5.9 for further information) or go to “Factory menuàOtheràOAD update“ and then press RCU “OK/►” key.
OAD will start automatically and several pop-up messages such as scanning/searching, downloading and flashing will be skipped (acknowledged by default).

Once upgrading completed, TV may restart automatically after warm start and implicit Reset All (in case of NVM mapping/signature change) in previous Factory and/or Burn-in mode.

How to change ProjectID with RCU

Process following subsequence IR codes to change projectID: 062598+MENU+xxx (xxx:ProjectID, ex: 003)
Restart TV

How to Upgrade HDCP KEY by UART

Connect UART interface to suitable manufacturing TV input connector.
Launch MTK tool with version above User Tool: FlashTo0l.exe
Open Flash Tool, Select menu bar Confing Item. Select Flash Download option.

Click on “Flash Download option” button and Into option menu.
Setting Start Address:0x007b0000, Area Length:0x00010000. Select OK.

Select menu upgrade icon .and Load bin File need Hdcp key.
Select Upgrade Icon.

Attention: If the upgrade is not successful, Press the computer ESC key when hold on TV, waiting for TV finish up after the upgrade.

How to upgrade CI Key using USB

Copy corresponding “*.key” files into USB stick (pen drive) root path, and renamed them as following “TCL_*.key” if necessary.
Under USB root path, create a new folder named as “XX_” (once the CI key is overwritten, the matching key file will be moved to this folder)
Plug USB stick to the TV

Go to “Factory menu à Other à Update CI+ Credential à Update From USB“ and then press RCU “OK/►” key.

The “Valid” flag should now be enabled (turns to “Yes”), “Custom Code” should displayed “TCL” and “Serial Num.” field should updated with Key number.
Remove USB stick.
Note: If unfortunately the process failed, you may need to download new CI key and repeat operation again.

How to upgrade CI Key using MTK tool

Connect UART interface to suitable manufacturing TV input connector.
Launch MTK tool with version above v2.48-05
Click on “Browse” button and select "All files(*.*)" filter, then browse any “*.key” file.
Modify "Custom Burning Address:" to "790000", then start to upgrade.
Restart TV.

Go to “Factory menu à Other à Update CI+ Credential à Update CI+ Credential”, and then press RCU ”OK/►” key. The “Valid” flag should now be enabled (turns to “Yes”), “Custom Code” should display “TCL” and corresponding “Serial Number” should be updated as well like onto below snapshot:
Remove UART connection.
Note: If unfortunately the process failed, you may need to download new CI key and repeat operation again.

How to upgrade MAC address using USB

MAC for USB upgrade method as following：
Create a new folder (name: _MAC) in the USB disk root directory.
Put the MAC file into the root directory of the USB disk.
Insert the USB disk into TV, in the factory menu, selected other > Update MAC address > Update From USB.

Note: A quick access to suitable submenu item can be achieved by pressing it prefixed RCU key number (ex: pressing “9” to directly highlight “USB Clone” item).

Troubleshooting