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LED TV Chassis

22PFL5557/V7
24PFL5557/V7
32PFL5537/V7
22PFL5957/V7
24PFL5957/V7
32PFL5957/V7
29PFL5937/V7
32PFL5937/V7

Contents Page
1. SAFETY PRECAUTION 2
2. SERVICE PROCEDURE 6
3. SOFTWARE UPGRADE PROCEDURE 13
4. VOLTAGE CHART
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1. SAFETY PRECAUTION
Caution :
hazardous radiation exposure.

CA UTION: TO REDUCE THE RISK OF
CAUTION ELECTRICAL SHOCK, DO NOT REMOVE
RISK OF ELECTRI
ELECTRIC COVER (OR BACK). NO USER SERVICEABLE
SHOCK DO NOT OPEN. PARTS INSIDE. REFER SER VICING TO
QUALIFIED SERVICE PERSONNEL.

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

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

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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 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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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 a built-in enclosure, unless proper ventilation is provided.

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
NATIONAL ELECTRICAL CODE

ANTENNA
LEAD- IN WIRE

GROUND CLAMP

ANTENNA DISCHARGE
UNIT (NEC SECTION
810-20)

GROUNDING
CONDUCTORS
ELECTRIC SERVICE (NEC SECTION 810-21)
EQUIPMENT

GROUND CLAMPS

POWER SERVICE GROUNDING
NEC-NATIONAL ELECTRICAL CODE 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 installer s 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.

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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 off and unplug the television set from the wall outlet.

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.

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2. Service Procedure
2.1. Factory Menu

Follow the below steps to pop-up the Factory Menu in case of "Factory Key" is disabled:
- press Remote Control key "MENU" to display main menu.
- press the subsequence Remote Control keys " 2 ", "5", " 8 " and " 0 ".
- Press Remote Control "OK" key to enter the submenu.
- Press Remote Control "Menu" key to go back to the previous menu.
- Press Remote Control "RIGHT" or "LEFT" key to change the values.
- Press Remote Control "OK" key run the function. (OK: Current source has been calibrated)

2.2."Factory Menu" Definition

1) ADC ADJUST

Item Sub-item Value Note
RGB Get the signal from the PC.
MODE Get the signal from the YPbPr, and the
YPbPr(SD)
signal is standard definition.
YPbPr(HD) Get the signal from the YPbPr, and the
signal is high definition.
R-GAIN
G-GAIN
B-GAIN For fine tune ADC manually.
ADC
R-OFFSET
ADJUST
G-OFFSET
B-OFFSET

FAIL
AUTO ADC OR FAIL: Current source has not been calibrated ,
SUCCESS SUCCESS: Current source has been calibrated.

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2) Smart Picture

Item Sub-item Value/Sub-item Note
MODE Vivid/Cinema/Personal/Bright Select the signal from the source.
Adjust the picture brightness from 0
BRIGHTNESS 0~100 to 100.
Adjust the picture contrast from 0 to
CONTRAST 0~100
PICTURE 100.
MODE COLOR 0~100 Adjust the picture color from 0 to 100.

SHARPNESS 0~100 Adjust the picture sharpness from 0 to
100.
TINT 0~100 Adjust the picture TINT from 0 to 100.

COPY ALL

3) W/B ADJUST

Item Sub-item Value/Sub-item Note
MODE TV/AV/YPbPr/VGA/HDMI1/HDMI2 Select the signal from the source.
TEMPERATURE Normal/Warm/Cool/Personal Select the temperature mode.

R-GAIN R White balance
W/B G White balance
G-GAIN
ADJUST
B-GAIN B White balance

R-OFFSET R Gray balance

G-OFFSET G Gray balance

B-OFFSET B Gray balance

COPY ALL

4) SSC

Item Sub-item Value/Sub-item Note
MIU Enable 0/1
MIU Span 20KHz to 40KHz

MIU Step 0.1% to 2.0%
SSC
LVDS Enable 0/1

LVDS Span 0.0KHz to 50KHz

LVDS Step 0.0% to 3.0%

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5) SPECIAL SET

Item Sub-item Value/Sub-item Note
2HOUR OFF ON/OFF The switch to close TV after 2 hours.
WHITE OFF/White/Red/Green/ Send out the five pattern picture.
PATTERN Blue/Black
SPECIAL Factory Settings
SET
Power OFF/ON/Last The PM mode select.

Aging ON/OFF The factory mode select.

Software Update(USB)
OSD Language English

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3. Software Upgrade
METHOD - 1 :
1. Save the new software file(*.bin) in the root directory of USB, and modify it's name as
MERGE.pkg.

2. Plug in the USB.
3. Power on the set.
4. Connect the USB to TV set.

5. To enter into FACTORY MENU go to USER MENU, press the subsequence remote
control keys "2","5","8","0".
.
6. Go to Software Update(USB) , press OK button of Remote, then press left buttom
to select update the software.
7. After upgrading the software, you should Switch on the TV set by the romote control or the
key-press.

METHOD - 2 :
Prepare Mstar ISP Utility tool for update.
1. Connect the PC to the serial connector on board using a special serial device (USB or COMx);
2. Provide the a correct voltage to the board;
3. Start " MStar_ISP.exe", and set the parameters as picture 1 ;
(Notice:select Port Type: USB, the ISP Slave address: 0x92, Serial Debug Slave Address: 0xB2);

Picture 1
4. Press "Connect" button to connect the conmunication between the PC and TV set as picture 1;

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5. Press "Read" button to select the SW that you want to update as the picture 2;

select the corresponding SW bin file to upload
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Picture 2

6. Press "Auto" and "Run" button to update the SW as the picture 3,and then wait it finish,
it is about four minute.

Picture 3

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4. Voltage Measurement
INFO:
All tests and measurements mentioned hereafter have to be carried out at a normal mains
voltage (220 ~ 240 VAC),
All voltages have to be measured with respect to ground, unless otherwise stated,
All final tests have to be done on a complete set including LED panel in a room with
temperature of 25+/-7

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