TCL L28E3500 Schematic

TCL

SERVICE MANUAL

L28E3500 MS82MT-LA

1. CautionĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂ2

2. Specification

3. Alignment Procedure

4. Block Diagram

5. Scheme Diagram

6. PCB Layout

7. Trouble Shooting

8. Explode DiagramĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂĂ35
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This manual is the latest at the time of printing, and does not
include the modification which may be made after the printing, by
the constant improvement of product

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RISK OF

ELECTRIC

SHOCK DO

NOT

OPEN.

SCHNEIDER ELECTRONICS GMBH-GERMANY

1. CAUTION

CAUTION:

Use of controls, adjustments or procedures other than those specified herein may result in
hazardous radiation exposure.

CA UTION : TO RE DUCE THE RIS K OF

CA U T IO N

RISK

SHOCK

The lighting flash with arrowhead symbol, with an equilateral triangle is intended to
alert the user to the presence of uninsulated voltage within the products
enclosure that may be of sufficient magnitude to constitute a risk of electric shock to
the person.

The exclamation point within an equilateral triangle is intended to alert the user to the
presence of important operating and maintenance (servicing) instructions in the
literature accompanying the appliance.

ELECTRI

NOT

OPEN.

ELECTR ICAL SHOC K, DO NOT RE MOVE
COVER (OR BACK). NO USER SERVIC EABLE
PAR TS INSIDE . RE FER SER VIC ING T O
QUALIFIE D SERVIC E PERS ONNEL.

dangerous

WARNING: TO REDUCE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

2



SCHNEIDER ELECTRONICS GMBH-GERMANY

IMPORTANT SAFETY INSTRUCTIONS

CAUTION:

Read all of these instructions. Sa ve these instructions for later use . Follo w all W arnings and
Instructions marked on the audio equipment.

1. Read Instructions-All the safety and operatinginstructionsshouldbe read before the productis operated.

2. Retain Instructions- The safety and operating instructions should be retained for future reference.

3. Heed Warnings- All warnings on the productand in the operating instructions should be adhered to.

4. Follow Instructions- All operating and use instructions should be followed.

FOR YOUR PERSONAL SAFETY

1. When the power cord or plug is damaged or frayed, unplug this television set from the wall outlet and refer servicing to
qualified service personnel.

2. Do not overload wall outlets and extension cords as this can result in fire or electric shock.

3. Do not allow anything to rest on or roll over the power cord, and do not place the TV where power cord is subject to
traffic or abuse. This may result in a shock or fire hazard.

4. Do not attempt to service this television set yourself as opening or removing covers may expose you to dangerous
voltage or other hazards. Refer all servicing to qualified service personnel.

5. Never push objects of any kind into this television set through cabinet slots as they may touch dangerous voltage
points or short out parts that could result in a fire or electric shock. Never spill liquid of any kind on the television set.

6. If the television set has been dropped or the cabinet has been damaged, unplug this television set from the wall outlet
and refer servicing to qualified service personnel.

7. If liquid has been spilled into the television set, unplug this television set from the wall outlet and refer servicing to
qualified service personnel.

8. Do not subject your television set to impact of any kind. Be particularly careful not to damage the picture tube surface.

9. Unplug this television set from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a
damp cloth for cleaning.

10.1. Do not place this television set on an unstable cart, stand, or table. The television set may fall, causing serious injury
to a child or an adult, and serious damage to the appliance. Use only with a cart or stand recommended by the
manufacturer, or sold with the television set. Wall or shelf mounting should follow the manufacturer s instructions, and
should use a mounting kit approved by the manufacturer.

10.2. An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces
may cause the appliance and cart combination to overturn.

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SCHNEIDER ELECTRONICS GMBH-GERMANY

PROTECTION AND LOCATION OF YOUR SET

11. Do not use this television set near water ... for example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a
wet basement, or near a swimming pool, etc.
Never expose the set to rain or water. If the set has been exposed to rain or water, unplug the set from the wall
outlet and refer servicing to qualified service personnel.

12. Choose a place where light (artificial or sunlight) does not shine directly on the screen.

13. Avoid dusty places, since piling up of dust inside TV chassis may cause failure of the set when high humidity persists.

14. The set has slots, or openings in the cabinet for ventilation purposes, to provide reliable operation of the receiver, to

protect it from overheating. These openings must not be blocked or covered.

Never cover the slots or openings with cloth or other material.
Never block the bottom ventilation slots of the set by placing it on a bed, sofa, rug, etc.
Never place the set near or over a radiator or heat register.
Never place the set in enclosure, unless proper ventilation is provided.

a built-in

PROTECTION AND LOCATION OF YOUR SET

15.1. If an outside antenna is connected to the television set, be sure the antenna system is grounded so as to provide some

protection against voltage surges and built up static charges, Section 810 of the National Electrical Code, NFPA No.
70-1975, provides information with respect to proper grounding of the mast and supportingstructure, grounding of the
lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection
to grounding electrode, and requirements for the grounding electrode.

EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE INSTR UCTIONS

EXAMPLE OF ANTENNA GROUNDING AS PER

NATIONAL ELECTRICAL CODE

ANTENNA
LEAD- IN WIRE

GROUND CLAMP

ELECTRIC SERVICE

EQUIPMENT

NEC-NATIONAL ELECTRICAL CODE

ANTENNA DISCHARGE
UNIT (NEC SECTION
810-20)

GROUNDING
CONDUCTORS
(NECSECTION 810-21)

GROUND CLAMPS

POWER SER VICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250. PART H)

15.2. Note to CATV system installer : (Only for the television set with CATV reception)

This reminder is provided to call the CATV system attention to Article 820-40 of the NEC that provides

installer s
guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding
system of the building, as close to the point of cable entry as practical.

16. An outside antenna system should not be located in the vicinity of overhead power lines or other electric lights or power
circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care
should be taken to keep from touching such power lines or circuits as contact with them might be fatal.

17. For added protection for this television set during a lightning storm, or when it is left unattended and unused for long
periods of time, unplug it from the wall outlet and disconnect the antenna. This will prevent damage due to lightning
and power-line surges.

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4

SCHNEIDER ELECTRONICS GMBH-GERMANY

OPERATION OF YOUR SET

18.

This television set should be operated only from the type of power source indicated on the marking label.If you are not
sure of the type of power supply at your home, consult your television dealer or local power company. For television
sets designed to operate from battery power, refer to the operating instructions.

19. If the television set does not operate normally by following the operating instructions, unplug this television set from the
wall outlet and refer servicing to qualifiedservice personnel. Adjust only those controls that are covered in the operating
instructions as improper adjustment of other controls may result in damage and will often require extensive work by a
qualified technician to restore the television set to normal operation.

20. When going on a holiday : If your television set is to remain unused for a period of time, for instance, when you go on
a holiday, turn the television set and unplug the television set from the wall outlet.

off

IF THE SET DOES NOT OPERATE PROPERLY

21. If you are unable to restore normal operation by following the detailedprocedurein your operating instructions,
do not attempt any further adjustment. Unplug the set and call your dealer or service technician.

22. Whenever the television set is damaged or fails, or a distinct change in performance indicates a need for
service, unplug the set and have it checked by a professional service technician.

23. It is normal for some TV sets to make occasional snapping or popping sounds, particularly when being
turned on or off. If the snapping or popping is continuous or frequent, unplug the set and consult your
dealer or service technician.

FOR SERVICE AND MODIFICATION

24. Do not use attachments not recommendedby the television set manufacturer as they may cause hazards.

25. When replacement parts are required, be sure the service technician has used replacement parts specified
by the manufacturer that have the same characteristics as the original part. Unauthorized substitutions
may result in fire, electric shock, or other hazards.

26. Upon completion of any service or repairs to the television set, ask the service technician to perform
routine safety checks to determine that the television is in safe operating condition.

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EM BUSINESS CENTER

r

TERMINALS

p()

Smart Volume

Yes

PACKAGE INFO

CC (Closed Caption)

Yes (CC1 CC4,Text1 Text4;

Gross Weight (Kg)

5.5

App

FTV PRODUCT MANAGEMENT DEPT.

SPECIFICATION RELEASE

Version: V2.1 Issued Date: 2013.03.27

Model:L28E3500/MS82MT-LA

PICTURE

Category LCD TV
Naturalight Technology Yes (Natural Light Engine ‖)
Dynamic Contrast Yes
Color Temperature Warm / Normal / Cold
Backlight Adjustable Yes
Scale Mode Zoom,Expand,Original,Natural Component Video Format Y,PB/CB,PR/CR:up to 1080P
Picture Effect Standard, Bright, Soft, Personal DVI Video Format Up to XGA for HDMI-PC
Film Mode (3:2 pull down) AUTO HDMI Video Format up to 1080P
VGA Dot to Dot Display Yes (Natural) PC Compatibility Up to SXGA
Light Senso

--

Picture Enhancement and Audio share with YPBPR Audio

Comb Filter 3D YP
Adaptive Deinterlacing 3D Audio Input for YP
Blue Stretch Yes YC
Black Stretch Yes Audio Input for YC
Motion Compensation Yes VGA(PC) Input 1 (D-Sub,15 Pins)---in side
DLTI Yes Audio Input for VGA(PC) Share with Audio for "YP
DCTI Yes HDMI 1 (HDMI1) ---in side
Dynamic Skin Correction Yes CVBS Output (Composite) 1 RCA Video Socket ---in side

PANEL SPECIFICATION

Back light Unit LED Headphone Output -­ Panel supplier CSOT RF Input(Antenna) 1 (F Type)---in side
Aspect Ratio 16:9 USB 1（Standard）---in side
Panel Size (inch) 27.5"
Display Resolution 1366*768 TV System NTSC-M;PAL-M;PAL-N
Brightness (cd/m2) 240 AV System PAL,NTSC
Contrast Ratio 3000:1 Channels
Response Time Tr/Tf 6.5ms Chassis MS82MT-LA
Viewing Angle (H/V) 178°/178° Certification CB
Life Time 30,000hrs Power Supply AC 100V-240V 50/60Hz
Color 16.7M Power Consumption-TV on 35W

SOUND

Speakers Integrated speakers (Bottom side) Default Color of Front Cabinet Black
Audio Power Output 2×2.5W Keyboard Position Back
Woofer Power Output -- Base Stand Detachable

Sound Effect Stereo, Music, Movie, News,Personal Unpackaged Dimension for Main Body (L*H*D) (mm)
Sound Control Balance, Sound EQ Adjust; With Base Stand (mm) 657.7x450.4x175
Sound Features MTS（BTSC） Without Base Stand (mm) 657.7x409.9x69.7

Scene Selecting（DeskTop mode and HangUp mode）

FUNCTION

OSD Language English/Spanish/Portuguese Speaker Box
OSD Features Motion Bmp Style Base Stand
Source in OSD Source Bmp Icon Selecting Net Weight (Kg) 4.5
CC (Closed Caption) Yes (CC1~CC4,Text1~Text4; Gross Weight (Kg) 5.5

Clock/Sleep Timers Yes 20 feet 693
Wake up/Turn off time Yes 40 feet 1408
Wake up Source/Chanel Yes 40 feet high 1557
Watch Time Limit Yes
Startup Setting Yes(User can set a picture for turning on Logo display) Operation Manual English(Default)
Smart Switch Yes(Signal Auto Detecting and Changing Source) Remote Control For TV control (with two batteries)
Picture Freeze Yes Base Stand Integrated Packaging
DNR（Dynamic Noise Reduction） Off、Low、Middle、High Speaker Box Integrated
Hotel Menu In factory mode Wall Mount WMB233（Optional）
USB Connection

CC OFF,CC ON,CC On Mute,) Container Loading

Movie：Support H.264、RM/RMVB、XVID、FLV Others AV Adapter cable
DivX、MPEG2

Photo: Support JPEG、BMP、PNG；
Music: support MP3、WMA、M4A；

、MPEG4、VC1

Design and specifications are subject to change without notice!

SIGNAL FORMAT CAPABILITY

AV1 Input (Composite)
AV2 Input (Composite)

BPR Input 1---in side

BPR 1---in side

BCR Input Share with "YPBPR"

BCR Share with Audio for "YPBPR"

SPDIF Output

Audio/CVBS---R/L+ Video in side

1 (coaxial digital audio output)---in side

BASIC INFO.

Cable 125 (1～125) , Antenna 68 (2～69)

Power Consumption-Standby

≤1W

Yes

.

Packaged Dimension (L*H*D)

Main Body (mm) 718X490X128

ACCESSORIES

Drafted by:

Checked by:

Video Share with Y

BPR"

roved by:

TCL Multimedia Technology Holdings Ltd.
R&D Center

Alignment Procedure

MS82MT-AP/LA Chassis

Version: 1.0
Release Date: 2013-03-26

PREPARED BY: Kangwei

APPROVED BY:

DATE: 2013-03-26

DATE:

MS82MT-AP/LA Chassis Aliment procedure

Content

1. General Description 3

2. Factory Menu 3

2.1 Way of accessing 3

2.2 Factory Menu 4

2.3 ADC calibration menu 5

2.4 White Balance adjustment 6

3. Design Menu 7

3.1 way of accessing 7

3.2 SHOP Menu 8

3.3 Other Menu 9

3.4 Service Menu 10

3.5 PARAM SETTING MENU 11

3.6 Hotel Menu 12

4. Steps of debugging 13

4.1 Device 13

4.2 steps of debugging 13

4.3 ADC calibration 13

4.4 White Balance adjustment 14

4.5 White Balance adjustment (automatically) 16

5. Chip list of software programming before SMT 16

6. Appendix 17

6.1 Software upgrading through USB 17

6.2 Check software version, release date and Project ID 18

6.3 FAQ 20

History Description of major changes Release

Date

V1.0 2013-03-26

Chassis Model

FHD MS82MT-AP/LA L28E3500 etc

PRELIMINARY INFORMATION ----- SUBJECT TO CHANGE

2

MS82MT-AP/LA Chassis Aliment procedure

1. General Description

MS82MT-AP/LA is our latest design especially for LCDTV products selling in Asia

Pacific (AP) and Latin America (LA) market. It features by its high integration,
easy debugging as well as convenience in terms of maintenance. Fast software
upgrade through USB disk facilitates both manufacture and after-sale service.
Meantime, a variety of functions involved in Factory Main Menu can not only
bring benefits for production, but also satisfy various demands of customer.

Note: Factory Main Menu (FMM) is divided into Factory Menu, Design Menu, Service
Menu and Hotel Menu. Factory Menu covers all indispensable functions during
manufacture such as White Balance Adjustment, ADC Calibration, USB Upgrading e.g.,
while the items under Design Menu is exclusively used by R&D engineer, anyone else
shouldn’t change the settings in the menu. When you wish to learn the product
information like project ID, model name, chassis name, software version, release date,
you can access to Service Menu. In addition, in Hotel Menu, we also provide a great
deal of useful functions for specific applications in hotel.

2. Factory Menu

2.1 Accessing way:

a. In the first place, press Menu button of
remote

control, then select Contrast item of Picture
submenu. Finally, press 9, 7, 3, 5 consecutively.
b. When the FAC HOTKEY item of Factory Menu
is enabled (ON), press Return button of remote
control.

PRELIMINARY INFORMATION ----- SUBJECT TO CHANGE

3

MS82MT-AP/LA Chassis Aliment procedure

2.2 Factory Menu

Factory Menu

Name Default Description Status

FAC
HOTKEY

OFF Factory Menu shortcut button switch

The item must be disabled (OFF) after production

OK

WARM-
UP

ADC >> ADC calibration ( see details below) OK

WHITE
BALANCE

SHOP

NVM RESET DO Restore default value except WB and ADC data. OK

SET FAC CH DO Preset the channel table of factory. Option: HZ, WX, EGYPT-EL,

Power On
Mode

OFF OFF: Normal mode. Display blue screen when no signal. Turn to

automatically standby mode if keep the signal unavailable over
15 minutes.

ON: Aging mode. Display snow dot when no signal. The set will not
turn to standby even if the unavailability of signal;press
‘function’key to exit warm-up mode.

>> White Balance Adjustment ( see details below) OK

DO It is crucial that the function is executed after production aim to clear

information of production process, ensure user cannot access to
Factory Menu after executing the item.

ALGERIA e.g. To p reset th e ch annel table of certain factory, firstly,
choose the corresponding factory name, then press OK button of
remote control and wait until the disappearance of Factory Menu,

LAST/STB ON: the set will power on after switching on power.

STB: the set will remain standby status after switching on power.
Last: the set will turn to the status in which it lies when last switching

off.
If without requirement from certain customer,
by default, the Setting should be Last for MS82S-AP and STB for
MS82S-LA

OK

OK

OK

OK

USB
UPDATE

SW NO. OFF Version information of Main Software OK

Project
Name

SIACP
Version

Date Release date and time of main software OK

Upgrade software. Please see details below. OK

Product model OK

Serial port remote control protocol OK

PRELIMINARY INFORMATION ----- SUBJECT TO CHANGE

4

MS82MT-AP/LA Chassis Aliment procedure

2.3 ADC calibration menu

ADC Menu

Press the button in remote control to select certain
item and

ADC calibration.
Notes:

1. Only YPBPR and RGB source should be calibrated.

to change the value of ADC data or start

ADC Calibration menu

Name Default Description Status

SOURCE Select the source you intend to ADC Calibrate.

R GAIN 4096 Gain of R channel ( cannot be changed after auto calibration) OK

G GAIN 4096 Gain of G channel ( cannot be changed after auto calibration) OK

B GAIN 4096 Gain of B channel ( cannot be changed after auto calibration) OK
R OFFSET 0 Offset of R channel ( cannot be changed after auto calibration) OK

Only YPBPR and RGB are available.

OK

B OFFSET 0 Offset of B channel ( cannot be changed after auto calibration) OK

G OFFSET 0 Offset of G channel ( cannot be changed after auto calibration) OK

AUTO ADC DO Select and execute the item, ADC Calibration starts. It indicates

ADC
STATUS

Show the ADC status of YPbPr/RGB Channel. SUCCESS will be

a successful calibration if prompt “OK” is displayed.
Otherwise, It is a failing calibration (“FAIL” is displayed).

display if YPbPr/RGB Channel has been correctly calibrated.
Otherwise FAIL will be displayed

OK

OK

PRELIMINARY INFORMATION ----- SUBJECT TO CHANGE

5

MS82MT-AP/LA Chassis Aliment procedure

2.4 White Balance Adjustment menu

White Balance menu

Press the button in remote control to select
certain item and to adjust Wh ite Balance

White Balance Adjustment menu

Name Default Description Status

Source PC Select the source you intend to apply WB adjustment.

COLOR
TEMPERATURE

R GAIN

G GAIN

B GAIN

R OFFSET

Cool Select color temperature you intend to adjust Three groups of

-2

0

+9

+6

Only HDMI1, AV1, YPBPR, PC and should be adjusted.

color temperature: Normal, Warm, Cool are available for each
source.

Gain of R channel ( cannot be changed after auto calibration) OK

Gain of G channel ( cannot be changed after auto calibration) OK

Gain of B channel ( cannot be changed after auto calibration) OK

Offset of R channel ( cannot be changed after auto calibration) OK

OK

OK

G OFFSET

0

Offset of G channel ( cannot be changed after auto calibration) OK

B OFFSET

-2

Offset of B channel ( cannot be changed after auto calibration) OK

WB INIT

PRELIMINARY INFORMATION ----- SUBJECT TO CHANGE

White Balance Initalization. Before WB adjustment, this item should
be executed.

OK

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