Service Manuals, User Guides, Schematic Diagrams or docs for : HAIER LCD HL42B-B Chassis MTK5371 HAIER+HL42B-B+Chassis+MTK5371+lcd
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Order NO.WH070625S001V0
HL42B-B
(Chassis:MTK5371)
@(2007)(Haier Electronic Company Limited)
All rights reserved. Unauthorized copying and distribution is a
violation of law.
1
WARNING
This service information is designed for experienced repair technicians only and is not designed for use
by the general public. It does not contain warnings or cautions to advise non-technical individuals of
potential dangers in attempting to service a product. Products powered b electricity should be serviced
or repaired only by experienced professional technicians. Any attempt to service or repair the product
deal with in this service information by anyone else could result in serious injury or death.
CONTENT
1. WAINING...................................................................................................3
2. SPECIFICATIONS....................................................................................... 6
3. LOCATION OF CONTROLS AND COMPONENTS............................................ 7
3.1.Board Location...................................... ...............................................7
3.2 Main Board...................................................... ....................................7
3.3 Power Board...................................... .................................................11
3.5 LCD Panel...................................... ....................................................12
4. INSTALLATION INSTRUCTIONS...................................................................15
4.1 External Equipment Connections......................................... ......................15
4.2 HDMI Connections...................................... ...........................................19
5. OPERATION INSTRUCTIONS.......................................................................21
5.1 Front Panel Controls...................................... .........................................21
5.2 Back Panel Controls...................................... ..........................................22
5.3 Universal Remote Controller...................................... ...............................22
6. DISASSEMBLY INSTRUCTIONS....................................................................24
6.1 Whole Machine.......................................................................................25
6.2 Base Subassembly..................................................................................26
6.3 Back Subassembly..................................................................................27
6.4 Screen bracket Subassembly....................................................................28
6.5 Front frame Subassembly.........................................................................29
6.6 Wire Subassembly..................................................................................30
7. MEASUREMENTS AND ADJUSTMENTS.........................................................31
8. BLOCK DIAGRAM AND CIRCUIT DIAGRAM....................................................35
8.1 Block Diagram.......................................................................................35
8.2 Circuit Diagram......................................................................................35
9. WIRING CONNECTION DIAGRAM.................................................................53
10. TROUBLESHOOTING GUIDE.......................................................................53
10.1. Simple check.....................................................................................53
10.2. PSU failure check...............................................................................57
10.5. Panel failure .....................................................................................58
2
1.Warning
WARNING
RISKELECTRIC SHOCK
DONOT OPEN
WARNING:To reduce the risk of electric shick don't remove cover or back.
No user-serviceable parts inside refer service to qualified service personnel.
Safety of operators has been taken into consideration at the design and manufacture phase, but
inappropriate operation may cause electric shock or fire. To prevent the product from being damaged,
the following rules should be observed for the installation, use and maintenance of the product. Read
the following safety instruction before starting the operation.
The User Manual uses the following symbols to ensure a safe operation and prevent damage to
operators or properties:
THIS SYMBOL INDICATES THAT HIGH VOLTAGE IS PRESENT INSIDE . IT IS
DANGEROUS TO MAKE ANY KING OF CONTACT WITH ANY INSIDE PART OF THIS
PRODUCT.
THIS SYMBOL INDICATES THAT THERE ARE IMPORTANT OPERATING AND
MAINTENANCE INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE
APPLIANCE.
FC C STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rule. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, use and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However ,there is no guarantee that interference with
not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encourage to try to correct the interference by one or more of the following measures:
*Reorient or relocate the receiving antenna.
*Increase the separation between the equipment and receiver.
*Connect the equipment into an outlet on a circuit different from that to which the receivers
connected.
*Consult the dealer or an experienced radio/TV technician for help.
This device compiles with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may be not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
FCC CAUTION:
To assure continued compliance and possible undesirable interference, the provided ferrite cores must
be used when connecting this plasma display to video equipment; and maintain at least 40cm spacing
to other peripheral device.
CANADIAN NOTICE:
This Class B digital apparatus compiles with Canadian ICES-003.
3
IMPORTANT SAFETY INSTRUCTIONS
Read all of the instructions before using this appliance. When using this appliance, always
exercise basic safety precautions, including the following:
1)Save these Instructions ---the safety and operating instructions should be retained for future
reference.
2)All warning on the appliance and in the operating instructions should be followed.
3)Cleaning --- Unplug from the wall outlet before cleaning. Do not use liquid cleaners or aerosol
cleaners. Use only dry cloth for cleaning.
4)Attachments ---do not use attachments not recommended by the manufacturer as they may cause
hazards.
5)Water and moisture -- do not place this product near water, for example, near a bathtub, wash bowl,
kitchen sink, laundry tub, in a wet basement, or near a swimming pool.
6)Accessories ---do not place this unit on an unstable cart, stand, tripod, bracket, or table. Use only with
a cart, stand, tripod, bracket, or table recommend by the manufacture, or sold with the unit.
7)Ventilation ---Slots and openings in the cabinets and the back or bottom are provided for ventilation.
These openings must not be blocked. In a built in installation such a bookcase or rack do not install
product unless proper ventilation is provided.
8)Power Source ---this TV should be operated only from the type of power source indicated on the
rating label. If you are not sure of the type of power supply to your home, consult your appliance dealer
or local power company.
9)Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding type plug has two blades and a third grounding prong.
The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your
outlet, consult an electrician for replacement of the obsolete outlet. To prevent electric shock, ensure
the grounding pin on the AC cord power plug is securely connected.
10)Power cord protection ---Power supply cords should be routed so that they are not likely to be
walked on or pinched by items placed upon or against them. Pay particular attention to cords or plugs,
convenience receptacle, and the point where they exit from the appliance.
11)Lighting precaution ---for added protection for this product during a lighting storm or when it is left
unattended for long period of time, unplug it from the wall outlet and disconnect the antenna or cable
system. This will prevent damage to the product due to lighting and power line surges.
12)Never push objects of any kind into this product through openings as they may touch dangerous
voltage point or short out parts that could result in a fire or electric shock. Avoid spilling liquid of any kind
on the product.
13)Servicing ---do not attempt to service the product by yourself, as opening or removing covers may
expose you to dangerous voltage or other hazards. Refer all servicing to authorized service personnel.
14)Unplug this unit from the wall outlet and refer servicing to qualified service personnel under the
following conditions:
a. When the power supply cord or plug is damaged or frayed.
4
b. If liquid has been spilled, or objects have been fallen into the unit.
c. If the unit has been exposed to rain or water.
d. If the unit does not operate normally by following the operating instructions. Adjust only those
controls that are covered by 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 unit to its normal operation.
e. If the unit has been dropped or damaged in any way.
f. When the unit exhibits a distinct change in performance; this indicates a need for service.
15) Heat --- The product should be situated away heat source such as radiators, heat registers,
stoves, or other products (Including amplifiers) that product heat.
16)Overloading ---Do not overload wall outlets and extension cord as this can result in a risk of fire
or electric shock.
MAINTENANCE
To remove dirt or dust, wipe the cabinet with a soft, dry, lint-free cloth. Please be sure not to use a wet
cloth.
Cleaning the Screen
Early malfunctions can be prevented. Careful and regular cleaning can extend the amount of time you
will have
your new TV. Be sure to turn the power off and unplug the power cord before you begin any cleaning.
1. Here`s a great way to keep the dust off your screen for a while. Wet a soft cloth in a mixture of
lukewarm water
and a little fabric softener or dish washing detergent. Wring the cloth until it`s almost dry, and then use it
to
wipe the screen.
2. Make sure the excess water is off the screen, and then let it air-dry before you turn on your TV.
Cleaning the Cabinet
Extended Absence
If you expect to leave your TV dormant for a long time (such as a vacation), it`s a good idea to unplug
the power cord to protect against possible damage from lightning or power surges.
5
2. Specification
Model HL
Screen size inch
Aspect ratio 16:9
Resolution 1366x768
Response Time ms) 8(GRAY TO GRAY)
Angel of view 178o
Color display 16777216
NO.of preset channels 181
OSD language English
Color system NTSC/ATSC
Audio system
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