TCL LCD32E9A-MS91LA User manual

TCL
SERVICE MANUAL
LCD32E9A-MS91LA
1. Caution…………………………………………………………………………2
2. specification……………………………………………………………………6
3. Alignment Procedure……………………………………………………………7
4．Block of Diagram ……………………………………………………………13
5．Scheme Diagram ……………………………………………………………14
6. Troubleshooting………………………………………………………………26
7. PCB Layout …………………………………………………………………32
8. Explode Diagram ……………………………………………………………38
9. Main IC specification…………………………………………………………39
10．BOM List ……………………………………………………………………43
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

CA UTION: TO RE DUCE THE RIS K OF
ELECTR ICA L SHOCK, DO NOT RE MOVE
COVER (OR BACK). NO USER SERVICEABLE
PAR TS INS IDE . RE FER SER VIC ING TO
QUALIFIE D SERVICE PERSONNEL.
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.
CAUTION:
Use of controls, adjustments or procedures other than those specified herein may result in
hazardous radiation exposure.
CA U T ION
RISK
RISK
OF ELECTRI
ELECTRI
C
SHOCK
SHOCK
DO NOT
NOT
OPEN.
OPEN.
2
dangerous
WARNING: TO REDUCE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
SCHNEIDER ELECTRONICS GMBH-GERMANY
1. CAUTION
2

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.
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 operating instructionsshouldbe 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 product and in the operating instructions should be adhered to.
4. Follow Instructions- All operating and use instructions should be followed.
3
SCHNEIDER ELECTRONICS GMBH-GERMANY
IMPORTANT SAFETY INSTRUCTIONS
FOR YOUR PERSONAL SAFETY
3

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.
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.
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
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.
ANTENNA
LEAD- IN WIRE
ANTENNA DISCHARGE
UNIT (NEC SECTION
810-20)
GROUNDING
CONDUCTORS
(NEC SECTION810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250. PART H)
ELECTRIC SERVICE
EQUIPMENT
GROUND CLAMP
NEC-NATIONAL ELECTRICAL CODE
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONAL ELECTRICAL CODE
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE INSTRUCTIONS
a built-in
installer s
4
SCHNEIDER ELECTRONICS GMBH-GERMANY
PROTECTION AND LOCATION OF YOUR SET
PROTECTION AND LOCATION OF YOUR SET
4

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.
21. If you are unable to restorenormal operation by followingthe detailedprocedurein your operatinginstructions,
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.
24. Do not use attachments not recommendedby the television set manufacturer as they may cause hazards.
25. When replacementparts are required, be sure the service technicianhas used replacementparts 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.
off
5
SCHNEIDER ELECTRONICS GMBH-GERMANY
OPERATION OF YOUR SET
IF THE SET DOES NOT OPERATE PROPERLY
FOR SERVICE AND MODIFICATION
5

EM BUSINESS CENTER
FTV PRODUCT MANAGEMENT DEPT.
SPECIFICATION RELEASE
Version: V1.0 Issued Date: 2008.06.03
PICTURE
Panel Size (inch) 32"
Category LCDTV
Aspect Ratio 16:9
Color Temperature Cool/ Normal / Warm SIGNAL FORMAT CAPABILITY
Backlight Adjustable Yes,Manual Adjustable & DBC(Dynamic Backlight Control ）Component Video Format Y,Pb/Cb,Pr/Cr:up to 1080P
Scaler Mode 4:3,14:9,16:9 ,FULL DVI Video Format --
Picture Effect 4 picture effects preset (Bright,Soft,Personal,Natural) HDMI Video Format Up to up to 1080P
Film Mode (3:2 pull down) Yes PC Compatibility VGA,SVGA,XGA etc.
Picture Enhancement TERMINALS
Comb Filter 3D Audio/CVBS Input (Composite) 3 R/L+3 Video: AV1,AV2,AV3(side)
Core Technology High-quality scaling engine&3-D video de-interlacer S-Video Input 1
DCC(Dynamic Contrast Control) Yes Audio Input for S-Video Share with Audio for AV2
DCDiTM Edge-oriented adaptive algorithm for smooth low-angle edges YPbPr Input 1
Blue Stretch Yes Audio Input for YPbPr 1
Black Stretch Yes YCbCr Input Share with "YPbPr"
Motion Compensation Yes Audio Input for YCbCr Share with Audio for "YPbPr"
DLTI Yes VGA Input(RGB) 1 (D-Sub,15 Pins)
DCTI Yes Audio Input for RGB Share with Audio for "YPbPr"
Dynamic Skin Correction Yes DVI --
DNR Yes Audio Input for DVI --
Panel Specification HDMI 2
Panel supplier SAMSUNG Audio/CVBS Output (Composite) 1 (R/L+CVBS) (RCA)
Viewing Technology PVA SPDIF Output 1 (Optical sound out,RCA)
Display Resolution 1366*768 Headphone Output 1 (Φ3.5mm )
Brightness (cd/m2) 450 RF Input(Antenna) 1 ("F" Type)
Contrast Ratio 2000:1 USB 1 (Standard)
Response Time 8ms (G to G) BASIC INFO.
Viewing Angle (H/V) 176°/176° TV System NTSC-M,PAL M,N
Life Time 60,000hrs AV System PAL,NTSC
Color 16.7M Channels 181
SOUND Chassis MS91-LA
Speakers Integrated speakers (Two mediant and one woofer) Certification CB
Audio Power Output 5W×2+8W(Woofer) Power Supply AC 100V-240V 50/60Hz
Sound Processing BTSC;SAP;Stereo Power Consumption-TV on 130W
DVSS (Dolby Virtual Surround) -- Power Consumption-Standby ＜3W
DDAS (Digital Dynimic Audio System) Yes Default Color of Front Cabinet Black
AVC (Auto Volume Control) Yes Keyboard Position Touch keyboard on the left side
BBE -- Base Stand Detachable Yes
SRS Yes Unpackaged Dimension for Main Body (L*H*D) (mm)
With Base Stand (mm) 796*584*231
Without Base Stand (mm) 796*534*104
Packaged Dimension (L*H*D)
Main Body (mm) 915*652*260
FUNCTION Speaker Box --
V-Chip Yes Base Stand Packaged with Main Body
CCD (Closed Caption) Yes Net Weight (Kg) 13.3
Teletext -- Gross Weight (Kg) 16
PIP/POP Yes see note 1 Container Loading
Macro Vision Yes 20 feet 188
Calendar -- 40 feet 396
Clock/Timers Yes 40 feet high 440
Lock Yes(Child Lock to lock keys) ACCESSORIES
OSD Language English,French,Portuguese,Spanish Operation Manual English(Default)
OSD Features Transparent adjustable(Off,Low,Mid,High) Remote Control For TV control (with two 7# batteries)
Card Reader -- Base Stand Integrated Packaging
AIS (Auto Input Switch) Yes Speaker Box Integrated
USB Connection Yes. Support Mp3,JPEG Wall Mount Optional
Game -- Others AC Power cord
Screen Saver --
Demo Function --
Picture Freeze Yes,and can save to peripheral equipment,such as HD.
Design and specifications are subject to change without notice! Page 1 of 1
Note:
1. PiP POP
Model: L32E9A/MS91-LA
AV Stereo,AVC,
BTSC, Equalizer
Approved by:
Sound Control
In PIP/POP mode,all the sources are divided into two groups. Group 1 includes TV,AV1~AV3,S-Video,Group 2 includes Y/Pb/Pr,VGA,HDMI1,HDMI2. If the Main window
display one of the source in Group 1, the Sub window can only display one of the source in Group 2, vice versa. The source in different group displayed at the same time
can not be supported.
Sound Features
Drafted by: 张勇 2008-06-03
Volume, Balance, 5 mode
presets(Stereo;Movie;News;Music;Personal)

TCL Multimedia Technology Holdings Ltd.
R&D Center
Alignment Procedure
MODEL
： L42E77F/MS91AP LCDTV
Version 1.0
PREPARED BY : Wise Zhang DATE : 2008-5-7
APPROVEDBY: DATE:

O verview：
L CDTV features by its small size, low weight, perfect display effects as well
as energy saving and low radiation. It can not only be used to receive TV program,
but also as PC monitor.
Note:
Factory Menu(FM) is designed for factory. R&D Menu (RDM) is for R&D purpose and
should not be changed in the process of production.
H ow to access to Factory Menu?
1. Firstly, in TV mode, press MUTE button of remote control to mute the set.
Secondly, press MENU button to enter user main menu. Then choose CONTRAST item in
PICTURE menu and press 9,7,3,5 buttons in series. Factory Menu will appear in the
left top of screen.
2. Press RETURN button when FACHOTKEY is enabled (ON).
Note: After upgrading the software for the first time. Restart the set (power off
then power on) should be made to ensure the correct EEPROM data.
F M(Factory Menu) menu
Item Default Description Status
FAC HOTKEY OFF Shortcut button to enter Factory Menu.（OFF：disable；ON：
enable），After production, the item must be disabled.
OK
WARM UP OFF OFF：normal mode，the set will turn to standby mode
when no signal inputted
ON：Aging mode，the set will display blue screen
when no signal inputted. Usually the value should
be set to off when aging test.
OK
ADC Calibration of ADC data OK
WHITE
BALANCE
White balance data adjustment OK
SHOP DO Reset the set after production to remove all unnecessary
factory debug information and the Factory Menu will can
not access for users.
OK
NVM RESET DO Restore the system to default value. This operation
will remove the white balance data. This function
only designed for R&D.
OK

SET FAC CH DO Preset the channel list of factory to provide convenience
for production.
OK
Power on LAST STB: The set will turn to standby mode when switch on.
LAST：remember the status of last switch off.
ON: power on when switch on.
OK
PVR UPGRADE DO OK
VERSION Display the version of software. OK
PVR VERSION OK
ADC calibration：
Item Default Description Status
SOURCE Current source OK
R OFFSET 127 R offset, manually adjustable. Should not be changed
after automatic adjustment.
OK
G OFFSET 127 G offset, manually adjustable. Should not be changed
after automatic adjustment.
OK
B OFFSET 127 B offset, manually adjustable. Should not be changed
after automatic adjustment.
OK
R GAIN 127 R gain, manually adjustable. Should not be changed after
automatic adjustment.
OK
G GAIN 127 G gain, manually adjustable. Should not be changed after
automatic adjustment.
OK
B GAIN 127 B gain, manually adjustable. Should not be changed after
automatic adjustment.
OK
AUTO TUNE Before calibration, first, please input
corresponding pattern according to the
instruction at the bottom of the menu. Second,
select AUTO TUNE, Then press vol- button in remote
control to calibrate ADC automatically. The result will
be displayed.
OK
WHITE BALANCE adjustment:
Item Default Description Status
SOURCE AV1 current source. Only AV1, HDTV, VGA need be
adjusted.
OK

COLOR TEMP NORMAL NORMAL/COOL/WARM OK
R GAIN 129 R offset, manually adjustable. Should not be changed
after automatic adjustment.
OK
G GAIN 128 G offset, manually adjustable. Should not be changed
after automatic adjustment.
OK
B GAIN 126 B offset, manually adjustable. Should not be changed
after automatic adjustment.
OK
R OFFSET 126 R gain, manually adjustable. Should not be changed
after automatic adjustment.
OK
G OFFSET 126 G gain, manually adjustable. Should not be changed
after automatic adjustment.
OK
B OFFSET 128 B gain, manually adjustable. Should not be changed
after automatic adjustment.
OK
H ow to access to R&D Menu?
1. Firstly, in TV mode, press MUTE button of remote control to mute the set.
Secondly, press MENU button to enter user main menu. Then choose CONTRAST item in
PICTURE menu and press 1,9,5,0 buttons in series. R&D Menu will appear in the left
top of screen.
2. Press RETURN button when Design Menu->DESIGNKEY is enabled (ON).
3. Press MENU button of remote control under FM.
R&D Menu(RDM)
Item Default Description Status
DESING KEY OFF Shortcut key control switch of Design Menu
(ON: enable, OFF: disable)
OK
FAC MENU To enter Factory Menu OK
SHOP INIT Should not be adjusted by factory. OK
OTHERE Other settings. NG
SERVICER
MENU
Product information NG