TCL MT62LV Schematic

TCL

Service Manual

CHASSIS MT62LV

Content s

1. Caution .…………………...................................................................…………...………..2

2. Test and Alignment………………….………………………………...………..7

3. Block Diagram………………………………….…….. .......................……..25

4. MB Schematic Diagram……………… …………….......................……….26

5. PSU Schematic Diagram..........................................................................43

6. Exploded View

....................................

................

.................................

CAUTION:

1、

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

CAUTION: TO REDUCE THE RISK OF

CAUTION

RISK RISK OF OF ELECTRIELECTRICC

SHOCK SHOCK DO DO NOT NOT OPEN.OPEN.

The lighting flash with arrowhead symbol, with an equilateral triangle is intended to alert the user to the presence of uninsulated voltage within the product s 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.

ELECTRICAL SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

dangerous

WARNING: TO REDUCE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT

EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

IMPORTANT SAFETY INSTRUCTIONS

CAUTION:

Read all of these instructions. Save these instructions for later use . Follow all Warnings and Instructions marked on the audio equipment.

1. Read Instructions- All the safety and operating instructions should be read before the product is operated.

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

3. Heed Warnings- All warnings on the product and 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 car t 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 car t combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn.

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 supporting structure, 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 INSTRUCTIONS

EXAMPLE OF ANTENNA GROUNDING AS PER

NATIONALELECTRICAL CODE

ANTENNA LEAD- INWIRE

GROUND CLAMP

ELECTRIC SERVICE

EQUIPMENT

NEC-NATIONALELECTRICAL CODE

ANTENNA DISCHARGE UNIT (NEC SECTION 810-20)

GROUNDING CONDUCTORS (NECSECTION 810-21)

GROUND CLAMPS

POWER SERVICE GROUNDING ELECTRODE SYSTEM (NEC ART 250. PARTH)

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 part icular, 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.

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 qualified service 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 detailed procedure in 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 recommended by 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.

Factory Alignment Specification of normal SIACP

TCL WW R&D FPD CENTER

Factory Alignment Specification of normal SIACP

For MT5362 serial

Version：V0.51

For the following Chassis：

MT62L:A mini edition of MT62B MT62S: MT62B + MS6M20(MEMC module) for super slim LCD MT62F:A full function edition of MT62B MT62S2: MT62S + DVB-S/S2 for super slim LCD MT62LV:MT62L + VGA source + headphone output

PREPARED BY : Lance Deng

APPROVED BY : DATE :

DATE : 2011-01-18

Factory Alignment Specification of normal SIACP

Disclosure

The information contained in this document is proprietary to TCL SZ FPD lab and shall not be disclosed by the recipient to third persons without the written permission of the team leader or GM of R&D.

Revision History

Status, Ver Date, Drafter Description of changes

V0.10 2010-02-07 This is the first version of normal SIACP

·HDMI as the main absolute input

·The password of factory menu is 9735

V0.20 2010-04-14 ·Upgrade specs for High Pot. and Insulating Resist ance Tests

·Upgrade USB upgrade SW met ho d

V0.30 2010-06-09 ·Add RCU(remote control unit) selection for the models IP

before May of 2010 in factory menu:( “feature” sub page in MT62L, “Project info” sub page in MT62F and MT62S) RC199:RC1994*** RC200:RC3000***

V0.42 2010-10-15 Add MT62S2 Chassis,

V0.50 2010-10-26 Add MT62LV Chassis,

V0.51 2010-12-22 Add the statement that the adapter should meet the High Pot.

and Insulating Resistance requirement.

Factory Alignment Specification of normal SIACP

These chassises are designed for European LCD TV with MPEG4. The main chip is from

Mediatec (MT5362 series) and supports below inputs and outputs:

class item MT62L MT62S MT62F MT62S2 MT62LV

ATV

( PAL B/G D/K I, SECAM

B/G D/K L/L)

DTV

(DVB-T,DVB-C,DVB-S/S2)

HDMI

(480i/p, 576i/p, 720p up to

1080i/p, compliant v1.2.

with HDCP)

VGA VGA/DVI audio

CMP

(YPrPb can support from

input

output

function

Others

Serial connector of MT5362 definition:

Pin1:VCC Pin2:RXD Pin3:TXD Pin4:GND (MT62LV: Pin1:RXD Pin2:TXD Pin3:GND)

I2C connector of MEMC definition:

Pin1:VCC Pin2:GND Pin3:SCL Pin4:SDA

480i up to 1080p,audio)

SCART1

(CVBS & RGB,audio)

SCART2

(CVBS & YC,audio)

Side AV or back AV

(CVBS,audio)

USB player

(picture,video,audio)

SCART1 output

(CVBS,audio)

SCART2 output (CVBS,audio) Headphone output SPDIF output

MEMC CI+

Serial connector I2C connector of MEMC module

√ √ √ √ √

DVB-T DVB-T

DVB-C

2 5 3 5 2

√ √ √ √

√

√ √ √ √ √

Picture

(up to

SW)

√ √ √ √ √

√ √ √

Coaxial Optical Coaxial Optical Coaxial

√ √ √ √ √

P5 P16 P3 P16 P5

PM3 PM3

with CMP

Picture,

Video,

audio

DVB-T

DVB-C

√

Back

Picture,

Video,

audio

DVB-T

DVB-C

DVB-S/S2

with CMP

Picture,

Video,

audio

DVB-T

√

Picture

(up to

SW)

Factory Alignment Specification of normal SIACP

INFO:

ª All tests and measurements mentioned hereafter have to be carried out at a normal mains voltage

(220 ~ 240 VAC)

ª All voltages have to be measured with respect to ground, unless otherwise stated ª All final tests have to be done on a complete set including LCD panel in a room with temperature of

25+/-7°C

ª The White Balance (color temperature) has to be performed into subdued lighted room after at

least 1 hour of warm-up/burn-in. This is applicable for both Alignment and Picture Performance

evaluation at OQA in order to be set free of any temperature drift ( colorimetry vs time)

1. Electrical Assembly Alignment

Preconditions – DC/DC Check

1.1.

Before power on, please check the board according to the relevant block diagram and circuit diagram, and make sure that no serious error should destroy the board. For example,the output of DC/DC and LDO should not shorted to ground.

Supply a suited voltage and power on , then check the voltage according to the relevant block diagram , circuit diagram and voltage spec . the error should less than 5% .For example, the voltage for main chip(DV33, AV33,DV18,DV11,etc.), the voltage for DDR (DDRV) , the voltage for amplifier(AUDIO_PWR),etc. Only the standby voltage is necessary if there is no software in the flash .

SW download

1.2.

Download the latest release MT62_SW into the flash using MTK SW tool. See Appendixo

“How to download FLASH SW”. Or upgrade the SW from USB port See Appendixp” How to upgrade FLASH SW from USB”.

Download the latest release MEMC_SW (skip this step if no MEMC module on the chassis).

See Appendixs

“How to download FLASH SW for MEMC module”.

1.3. Panel ID check and modify

There is different ID stored in the NVM depended on different Panels. Modify it with Hyper

terminal if the initial ID or a wrong ID make the set can not display clearly. See Appendixr

. It can

be checked and modified in Factory menu->Feature->Panel ID if the set can display clearly .

The set should be restart if the panel ID is changed .

1.4. Functional Test

Once the boards (chassis, KB, IR, PSU…) and the panel are well interconnected, connect all external generator devices to relevant inputs/outputs below according to their respective test patterns format and check picture content and sound quality accordingly

Source Test signal (generator) Test pattern (format/image)

Analog /Digital Tuner RF cable Full Band (VHF/UHF) + CATV DVB-T

DVB-S/S2 Tuner

(only for MT62S2 mode)

DVB-S/S2 generator

1．Frequency : 950MHZ~2150MHZ

2. Symbol rate

DVB-S2：1~45MHZ(for QPSK)

DVB-S： 1~30MHZ(for QPSK)

3. LNB supply power:

Vertical voltage:12.85V ~14.2V

Horizonal voltage:17.6v~19.5v

1~30MHZ(for 8PSK)

Factory Alignment Specification of normal SIACP

4. DiSEqC 1.0 and Tone Burst

(Diseqc input: A,B,C,D,Tone A,Tone B)

5. Double LNB frequency. changing

band by 22kHz tone

6. 22kHz tone spec :

frequency range: 20.5KHZ~23.5KHZ

amplitude: 400mv~900mv

current: at least 400mA

Composite(CVBS) Chroma/Fluke PAL Half Color & Gray bars

SCART1 (CVBS)

SCART1 (RGB)

SCART2 (CVBS)

SCART2 (Y/C)

VGA Chroma/QuantumData 1024x768@60Hz

CMP (YPrPb) Chroma/QuantumData 1080i@60Hz

HDMI DVD with HDMI

Headphone RF cable First channel

Loud Speakers RF cable First channel

Chroma/Fluke PAL Half Color & Gray bars

Half Color & Gray bars

Chroma/Fluke PAL Half Color & Gray bars

Half Color & Gray bars

Movie 720p@60Hz

compliancy

SCART1 (CVBS out) RF cable First channel

SCART2 (CVBS out) Chroma/Fluke PAL Half Color & Gray bars

Audio tones can be defined by the factory (ie: 1KHz & 3KHz, sweep, …).

Picture video formats can be changed by the factory according to their own standard.

1.5. ADC Calibration

To ensure the ADC performance, the error of “generator+cable” must be less than 2%. The

following inputs require an ADC calibration for the time being.

 VGA(skip this step if no VGA input on the chassis)

Provide a test signal 1024×768@60Hz with WhiteBlack squares. Select the corresponding FactoryMenu->

key on

RemoteControl

to start. Value of status will change to “OK” if succeed.

ADC Calibration

 CMP

Provide a test signal 720p@60Hz with 100% 8 steps ColorBar.

Select the corresponding FactoryMenu-> ADC Calibration-> Auto Color , then press ”OK”

key on

RemoteControl

to start. Value of status will change to “OK” if succeed.

 Scart RGB

Provide a test signal PAL 576i with 100% 8 steps ColorBar.

Select the corresponding FactoryMenu->

key on

RemoteControl

The mean of status value:

“NONE”= no input is successful in ADC calibration.

“OK”= current input is successful in ADC calibration.

“NOK”= current input is fail in ADC calibration.

“ALL”= all inputs required are successful in ADC calibration.

to start. Value of status will change to “OK” if succeed.

ADC Calibration

R Gain, G Gain, B Gain, R Offset, G Offset, B Offset in

-> Auto Color , then press ”OK”

FactoryMenu->

ADC Calibration

Factory Alignment Specification of normal SIACP

page

can be fine-tuned if necessary but not required.

1.6. DDC & EDID Test

The E-EDID data structure are according to VESA Enhanced EDID 1.3 (and EIA/CEA-861B for

HDMI).

Both VGA and HDMI have their own separate bin files:

For EDID check, it’s needed to check whether the correct EDID is downloaded 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.

1.7. HDCP Test

For HDCP compliancy, it’s needed to check whether the HDCP key has been well set.

1.8. CI+ Key activation and test(This step is only for the models with CI+ function )

Select factory menu-> Update CI+ Credential-> Update CI+ Credential , then press ”OK” key

RemoteControl

Code(Custom Code), Serial Num display if succeed. Download the CI+ Key and try to active it

again if fail.

to active the CI+ KEY. The Valid(CI+ state) state turn to “Yes” and Cus

2. Final Assembly Alignment

2.1. FactoryMenu

Follow the below steps to pop-up the Factory Menu in case of “FactoryKey” is disable

press RemoteControl key “MENU” to display main menu

- Select “Picture” and press “OK” key to enter the picture submenu

- Select “Contrast” item

press the subsequence RemoteControl keys “9”, “7”, “3” and “5”

Press RemoteControl key “Blue” To pop-up the Factory Menu in case of “FactoryKey” is

enable.

The status of “FactoryKey” can be changed in

RemoteControl “OK” key or “RIGHT” key to enter the submenu.

Press

FactoryMenu->

System

FactoryKey

Press RemoteControl “Menu” key to go back to the root menu. Press RemoteControl “RIGHT”or “LEFT” key to change the values. Press RemoteControl “OK” key run the function.

RemoteControl “Exit” key exit the factorymenu.

Press

2.2. Entering to “P” Mode

Turned on the factory key to enter into “P” mode.The TV will display “P” in bottom left corner in “P” mode.

Factory Alignment Specification of normal SIACP

2.3. White Balance Alignment

Make sure that the picture mode is “vivid”, enter to “P” mode( switch off “Pic. Enhance” in Factory Menu-> WD Alignment before white balance alignment .

VGA,CMP,SCART RGB,DTV,CVBS_PAL Color Coordinates are relative to HDMI.

CVBS_SECAM and CVBS_NTSC Color Coordinates are relative to CVBS_PAL.

Warm and Cool Color Coordinates are relatives to Normal mode.

Only HDMI(YUV 720p@60Hz) input requires color temperature adjustment.

turned on the factory key

All the Relative

) and

Matrix Offsets should be set while doing alignment.

 Expected Targets and Tolerances

The measured parameters should be “x, y” coordinates.

The White Balance alignment should be performed using a contact less analyzer (ei: Minolta

CA-210). 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.

The result should measure up the relevant spec.

The alignment have to fulfill the requirements in Application Form.

 Alignment FlowChart

Provide a test signal on the input and align the WB as described inside attached document

ensuring first that the BackLight value is matching below table:

MTK_EuroAlignmentF

lowchart.doc

2.4. High Pot. and Insulating Resistance Tests

At the end of the process, a High Pot. and an Insulating Resistance tests are required for matching Safety Electrical requirements (ei: xxxx)， even the adapter should meet the requirement.

 High Voltage Withstanding requirements

- “Voltage” Ö 3500 VAC

- “Max Leakage Current” Ö 10 mA

- “Test Time” Ö 5 sec

 Insulating Resistance requirements

- “Voltage” Ö DC500V

- “Threshold Max” Ö

- “Threshold Min” Ö 4MΩ

- “Test Time” Ö 3 sec

Factory Alignment Specification of normal SIACP

Factory default settings

Do the “Reset shop” before packing.The detail of reset shop follow OOB setting.

“Factory Menu” Definition

1)． System

Item Sub-item Value Note

System

Factory Key Off/On

Power Mode Boot/Standby/

Last Status

Burning Mode Off/On

Pre-Frequency Poland Run

Pre-Frequency Huizhou Run

Pre-Frequency Thailand Run

Reset User

Reset All

Reset Shop

OFF：hotkey is invalid

ON ：hotkey(blue key) is availability

Boot: Enter power on mode

Standby: Enter standby mode

Last Status: power on according to last

status

Select panel On with left/right key, Press

“EXIT” key to enter the burning mode;

Press “Menu” key on keyboard to exit the

burning mode

Press “OK” key to run

Clear date of NVM in user menu,except

the value of language / related

installation/Factory setting,then set to the

default value.

clear NVM values，and set to default

value。

Clear date of NVM in user menu,include

the value related installation,and Clear

date of factory menu except the item of

Balance and sound ,set to default value

2)．Feature

Item Sub-item Value/Sub-item Note

Feature

FleshTone Off/On

Adaptive Luma Control Off/On

Light sensor Off/On

Adaptive Backlight

(note1)

Auto/Low/Mid/High

(it should be “On/Off

Some models have have no

this feature.

Set the backlight mode

“ in 26 inch and

smaller ones)

Backlight Low

Set the backlight value of Low

mode

Factory Alignment Specification of normal SIACP

Backlight Mid

Backlight High

ADP low control point

ADP mid control point

ADP high control point

White Peak Limitator Off/On

Set the backlight value of Mid

mode

Set the backlight value of High

(or Off) mode

Set the low point in dynamic

backlight control curve

Set the mid point in dynamic

backlight control curve

Set the high point in dynamic

backlight control curve

TunerAGC

Project ID

(note2)

RCU type (note2)

-44~127

RC199/RC200

Select panel ID with left/right

key, restart the set to take

effect.

Select remoe control unit for the models wich IP before May of 2010 RC199:RC19949** RC200:RC3000E01

Note1: In MT62F and MT62S chassises:

There is no “Adaptive Backlight” item, “Auto/Low/Mid/High” “Backlight” “ADP low control point” “ADP mid control point” “ADP high control point” are in the “feature” page. There is only “Backlight” item instead of “Backlight Low” “Backlight Mid” “Backlight High”. It set the

backlight value of current backlight mode. Note2: In MT62F and MT62S chassises: “Project ID” and “RCU type” item is in the “Project info” sub-page.

3)． ADC Calibration

Item Sub-item Value Note

ADC

Calibration

Source HDMI,etc

Auto color Run

Status NONE

/ NOK

/ OK

/ ALL

VGA\CMP\scart RGB require Calibration

Press “OK” key to run

NONE:No source has been calibrated

NOK:Current source hasn’t been calibrated

OK: Current source has been calibrated

ALL:All sources have been calibrated

R Gain

G Gain

B Gain

For fine tune ADC manually.

R Offset

G Offset

B Offset

+ 30 hidden pages