Service Manual ...........................................................................................................................................................- 3 -
1. Precautions and notices.....................................................................................................................................- 3 -
3.1 General Specifications..........................................................................................................................- 14 -
6.1 Get ready for upgrading........................................................................................................................- 26 -
6.2 Upgrading with the MtkTool................................................................................................................- 28 -
7.1 Troubleshooting for Remote Control....................................................................................................- 32 -
7.2 Troubleshooting for Function Key........................................................................................................- 33 -
7.3 TV won’t Power On..............................................................................................................................- 34 -
7.4 Troubleshooting for Audio....................................................................................................................- 35 -
7.5 Troubleshooting for TV/VGA/HDMI/YPbPr input..............................................................................- 36 -
7.6 Troubleshooting for Video/S-Video input.............................................................................................- 37 -
8. Explode View and BOM.................................................................................................................................- 38 -
BEFORE SERVICING THE PDP TV, READ THE SAFETY PRECAUTIONS IN THIS
MANUAL.
WHEN REPLACEMENT PARTS ARE REQUIRED, BE SURE TO USE
REPLACEMENT PARTS SPECIFIED BY THE MANUFACTURER.
Proper service and repair is important to the safe, reliable operation of all Hisense
Electric Co., Ltd Equipment. The service procedures recommended by Hisense and
described in this Service Guide are effective methods of performing service operations.
Some of these service operations require the use of tools specially designed for the
purpose. The special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES
which should be carefully read in order to minimize the risk of personal injury to service
personnel. The possibility exists that improper service methods may damage the
equipment. It is also important to understand that these CAUTIONS and NOTICES ARE
NOT EXHAUSTIVE. Hisense could not possibly know, evaluate and advise the service
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Plasma TV Service Manual
trade of all conceivable ways in which service might be done or of the possible
hazardous consequences of each way. Consequently, Hisense has not undertaken any
such broad evaluation. Accordingly, a serviceman that uses a service procedure or tools,
which are not recommended by Hisense, must first satisfy himself thoroughly that
neither his safety nor the safe of the equipment will be jeopardized by the service
method selected.
Hereafter throughout this manual, Hisense Electric Co., Ltd will be referred to as
Hisense.
1.1 Warning
1.1.1
Critical components having special safety characteristics are identified with a
Ref. No. in the parts list. Use of substitute replacement parts, which do not have the
same specified safety characteristics, may create shock, fire, or other hazards.
Under no circumstances should the original design be modified or altered without
written permission from Hisense. Hisense assumes no liability, express or implied,
arising out of any unauthorized modification of design. Serviceman assumes all liability.
by the
DANGERCAUTION CAUTION
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY
ORIGINAL MANUFACTURER'S REPLACEMENT PARTS, WHICH ARE LISTED WITH
THEIR PART NUMBERS IN THE PARTS LIST SECTION OF THIS SERVICE GUIDE.
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1.1.2.
All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD).
Careless handling during repair can reduce life drastically. When repairing, make sure
that you are connected with the same potential as the mass of the set by a wristband with
resistance. Keep components and tools also at this same potential.
1. Never replace modules or other components while the unit is switched on.
Plasma TV Service Manual
2. When making settings, use plastic rather than metal tools. This will prevent any
short circuits and the danger of a circuit becoming unstable.
1.1.3
To prevent electrical shock, do not use this polarized ac plug with an extension cord,
receptacle, or the outlet unless the blades can be fully inserted to prevent blade exposure.
To prevent electrical shock, match wide blade or plug to wide slot, fully insert.
1.1.4
When replacement parts are required, be sure to use replacement parts specified by the
manufacturer or have the same characteristics as the original part. Unauthorized
substitutions may result in fire, electric shock, or other hazards.
1.1.5
Safety regulations require that after a repair the set must be returned in its original
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condition. In particular attention should be paid to the following points.
-Note: The wire trees should be routed correctly and fixed with the mounted cable
clamps.
-The insulation of the mains lead should be checked for external damage.
1.1.6
(1) Do not touch Signal and Power Connector while this product operates. Do not
touch EMI ground part and Heat Sink of Film Filter.
(2) Do not supply a voltage higher than that specified to this product. This may damage
the product and may cause a fire.
Plasma TV Service Manual
(3) Do not use this product in locations where the humidity is extremely high, where it
may be splashed with water, or where flammable materials surround it. Do not install
or use the product in a location that does no satisfy the specified environmental
conditions. This may damage the product and may cause a fire.
(4) If a foreign substance (such as water, metal, or liquid) gets inside the panel module,
immediately turn off the power. Continuing to use the product may cause fire or
electric shock.
(5) If the product emits smoke, and abnormal smell, or makes an abnormal sound,
immediately turn off the power. Continuing to use the product, it may cause fire or
electric shock.
(6) Do not disconnect or connect the connector while power to the product is on. It
takes some time for the voltage to drop to a sufficiently low level after the power has
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been turned off. Confirm that the voltage has dropped to a safe level before
disconnecting or connecting the connector.
(7) Do not pull out or insert the power cable from/to an outlet with wet hands. It may
cause electric shock.
(8) Do not damage or modify the power cable. It may cause fire or electric shock.
(9) If the power cable is damaged, or if the connector is loose, do not use the product:
otherwise, this can lead to fire or electric shock.
(10) If the power connector or the connector of the power cable becomes dirty or dusty,
wipe it with a dry cloth. Otherwise, this can lead to fire.
Plasma TV Service Manual
(11) PDP Module uses a high voltage (Max.450V dc). Keep the cautions concerning
electric shock and do not touch the Device circuitry when handling the PDP Unit. And
because the capacitor of the Device circuitry may remain charged at the moment of
Power OFF, standing by for 1 minute is required in order to touch the Device circuitry.
(12)Use only with the cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury from tip-over.
1.2 Notes
Notes on Safe Handling of the Plasma Display and during service
The work procedures shown with the Note indication are important for ensuring the
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safety of the product and the servicing work. Be sure to follow these instructions.
• Before starting the work, secure a sufficient working space.
• At all times other than when adjusting and checking the product, be sure to turn OFF
the POWER Button and disconnect the power cable from the power source of the TV
during servicing.
• To prevent electric shock and breakage of PC board, start the servicing work at least 30
seconds after the main power has been turned off. Especially when installing and
removing the power supply board and the SUS board in which high voltages are applied,
start servicing at least 2 minutes after the main power has been turned off.
Plasma TV Service Manual
• While the main power is on, do not touch any parts or circuits other than the ones
specified. The high voltage power supply block within the PDP module has a floating
ground. If any connection other than the one specified is made between the measuring
equipment and the high voltage power supply block, it can result in electric shock or
activation of the leakage-detection circuit breaker.
• When installing the PDP module in, and removing it from the packing carton, be sure
to have at least two persons perform the work while being careful to ensure that the
flexible printed-circuit cable of the PDP module does not get caught by the packing
carton.
• When the surface of the panel comes into contact with the cushioning materials, be
sure to confirm that there is no foreign matter on top of the cushioning materials before
the surface of the panel comes into contact with the cushioning materials. Failure to
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observe this precaution may result in, the surface of the panel being scratched by foreign
matter.
• When handling the circuit board, be sure to remove static electricity from your body
before handling the circuit board.
• Be sure to handle the circuit board by holding the large parts as the heat sink or
transformer. Failure to observe this precaution may result in the occurrence of an
abnormality in the soldered areas.
• Do not stack the circuit boards. Failure to observe this precaution may result in
problems resulting from scratches on the parts, the deformation of parts, and
Plasma TV Service Manual
short-circuits due to residual electric charge.
• Routing of the wires and fixing them in position must be done in accordance with the
original routing and fixing configuration when servicing is completed. All the wires are
routed far away from the areas that become hot (such as the heat sink). These wires are
fixed in position with the wire clamps so that the wires do not move, thereby ensuring
that they are not damaged and their materials do not deteriorate over long periods of time.
Therefore, route the cables and fix the cables to the original position and states using the
wire clamps.
• Perform a safety check when servicing is completed. Verify that the peripherals of the
serviced points have not undergone any deterioration during servicing. Also verify that
the screws, parts and cables removed for servicing purposes have all been returned to
their proper locations in accordance with the original setup.
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• A glass plate is positioned before the plasma display. This glass plate can be cleaned
with a slightly humid cloth. If due to circumstances there is some dirt between the
glass plate and the plasma display panel it is recommended to do some maintenance
by a qualified service employee only.
The lightning flash with arrowhead symbol, within 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
Plasma TV Service Manual
constitute a risk of electric shock.
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 set.
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Plasma TV Service Manual
2. Product Function Specifications
2.1 Product Function
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Plasma TV Service Manual
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2.2 Specifications
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Plasma TV Service Manual
NOTE: Specifications and design are subject to possible modifications without notice due to
improvements。
3. PDP panel module
3.1 General Specifications
Model Name
Number of Pixels
Pixel Pitch
Cell Pitch
Display Area
Outline
Dimension
Pixel Type
Number of
Gradations
Aspect Ratio
Peak Brightness
Contrast Ratio
Weight
Power
Consumption
Expected
Life-time
Income inspections please refer to panel specification of LGE 42X4and 50X4.
60.7(D)±1mm
RGB Closed typeRGB Closed(Well) type
(R)1024 × (G)1024 ×
(B)1024
16:916:9
Typical 1,500cd/㎡ Typical 1500cd/㎡ 1/100 White Window
Typical 180:1 Average130:1(In a bright room with
Typical 10,000:1 Maximum 10,000:1In a dark room 1/100
14.2 Kg ± 0.5 Kg 20.4±0.5 Kg Net 1EA
Max.330WMax. 400 WFull White
60,000 Hours60,000 Hours
PDP50X4#### (50X4
Model)
1106.5(H) × 622.1(V) ±
0.5mm
1190(H) × 700(V) ×
58(D) ± 1mm
(R)1,024 × (G)1,024 ×
(B)1,024 colors
Comments
pattern at center)
100Lux at center)
White Window pattern
at center)
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Plasma TV Service Manual
3.2 BLOCK DIAGRAM
3.2.1 PLX-4202B
Note: Applied Voltage level is specified at the time when Full-White pattern is displayed on the panel.
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3.2.2 PLX-5002B
Plasma TV Service Manual
Note: Applied Voltage level is specified at the time when Full-White pattern is displayed on the panel.
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Plasma TV Service Manual
4. Chassis Layout and Overall Wiring Diagrams
4.1 Boards and Chassis Layout
PHD4239NUS
PLX-4202B System
PHD4239NUS Panel
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PHD5039NUS
Plasma TV Service Manual
PHD5039NUS System
PHD5039NUS Panel
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Plasma TV Service Manual
No DescriptionPart NoType/Model
TV(1) Main BD 113043 RSAG2.908.1072\ROH
TV(2) In/Out connector board 113178 RSAG2.908.1080\ROH
TV(3) LED / IR Board
TV(4) Key Board
113179 RSAG2.908.1081\924\ROH
4.2 Connectors
Main Board
Location No. Specification Description
XP13 TJC3-7A\ROH Power from PSU BD P801
XP12 FF-HX19-10\ROH LVDS signal between MB and panel
XP14 TJC3-12A\ROH Power from PSU BD P803
XP3 TJC10-3A\ROH Buttons (connect key BD and main BD)
XP2 TJC10-5A\ROH IR, LED
XP5 TJC10-4A\ROH Serial Port connector
XP6 A2006WSO-2×13P\ROH Video/Audio signal
XP8 TJC3-4A\ROH Headphone Audio Signal
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XP15 TJC3-4A\ROH Power for AMP, from PSU BD P802
XP11 TJC3-4A\ROH Audio signal to speakers
Plasma TV Service Manual
4.3 Wires and Cables Overall Wiring Diagram(s)
PHD4239NUS
I/O Connector BD
No DESCRIPTION SPECIPICATION NOTE
LVDS signal FF-HX19-11 Main BD XP12<-->CRTL BD
1
5V standby, communication
2
between Main BD and panel
+5V, +12V supply to Main BD TJC3-12Y-EI-200\ROH Main BD XP14<-->PSU P803
3
Power supply for amplifier TJC3-4Y-EI-200\ROH Main BD XP15<-->PSU P802
4
Buttons TJC10T-3Y-850-P Main BD XP3 <--> Key BD XPK01
5
LED & IR TJC10T-5Y-950-P Main BD XP2<-->IR &LED BD
6
Audio out put (R/L) TJC3H-4Y-800-850-P\ROHMain BD XP11<-->Speakers
7
Headphone Audio TJC3T-4Y-300\ROH Main BD XP8<-->I/O CON BD XP02
8
Serial data TJC10T-4Y-300\ROH Main BD XP5<-->I/O CON BD XP03
9
Video/Audio signal HX-2026C250 Main BD XP6<-->I/O CON BD XP01
10
TJC3-7Y-EI-300-ROH Main BD XP13<-->PSU P801
XPR01
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PHD5039NUS
Plasma TV Service Manual
No DESCRIPTION SPECIPICATION NOTE
LVDS signal FF-HX19-11 Main BD XP12<-->CRTL BD
1
5V standby, communication
2
between Main BD and panel
+5V, +12V supply to Main BD TJC3-12Y-EI-200\ROH Main BD XP14<-->PSU CN803
3
Power supply for amplifier TJC3-4Y-EI-200\ROH Main BD XP15<-->PSU CN802
4
Buttons TJC10T-3Y-700-P\ROH Main BD XP3 <--> Key BD XPK01
5
LED & IR TJC10T-5Y-950-P Main BD XP2<-->IR &LED BD
6
Audio out put (R/L) TJC3H-4Y-800-850-P\ROHMain BD XP11<-->Speakers
7
Headphone Audio TJC3T-4Y-300\ROH Main BD XP8<-->I/O CON BD XP02
8
Serial data TJC10T-4Y-300\ROH Main BD XP5<-->I/O CON BD XP03
9
Video/Audio signal HX-2026C250 Main BD XP6<-->I/O CON BD XP01
10
TJC3-7Y-EI-200\ROH Main BD XP13<-->PSU CN801
XPR01
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Plasma TV Service Manual
5. Factory/Service OSD Menu and Adjustment
5.1 To enter the Factory OSD Menu
a. With factory RC (remote control)
1. Press “M” button and enter factory mode.
2. Press “Menu” button and enter factory OSD menu.
3. Press “CH+”/“CH-” button select the function menu, press “VOL+”/“VOL-” enter the selected
function menu. Press “VOL+”/“VOL-” button adjust values in the menu.
b. With user’s RC
1. Power TV On
2. Press Menu button and call up User OSD Menu
3. Select Audio-> Balance
4. Enter 0->5->3 ->2 in sequence.
Note: If necessary, re-do number keys.
5. Factory OSD appears.
6. Press Menu again and leave the factory OSD.
5.2 Factory OSD Menu
5.2.1 White Balance
Note: Different source has different WB values. Before adjusting, please change to desired source.
Auto Color
Item Default Options Notes
1 ADC VGA For VGA source
2 ADC HDTV For Component Video
5.2.2 Factory Option
Item Default Options Notes
M-Can enter factory mode
1 MODE M M, U
Note: MODE “M” is only used for factory production.
with factory RC or user RC.
U-Can enter factory mode
only with user’s RC.
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Plasma TV Service Manual
5.2.3 Version Info
Item Default Options Note
1
2
Version
Date
Software version
——
The date of current version
Note: Software version info of the TV, readable only.
5.2.4 Clear the EEPROM
Item Meaning Note
1 Clear partly
2 Clear completely
Note: The factory menu date varies according to different sources. Incase changing the factory
data by error, you can choose to “clear the EEPROM”, by which you can resume the default
value.
To clear the EEPROM:
a. Select the button “Clear All”.
b. Press VOL+ button to clear the EEPROM data.
c. Wait for 5 seconds, close the OSD menu.
d. Restart the TV.
WB data、Auto Color data
5.3 Designer Menu
5.3.1 Video Mode
Standard:
TV AV S-Video ComponentVGA HDMI
R Gain 0 0 0 1 0 0
G Gain 0 0 0 2 -1 2
B Gain -7 -7 -7 -4 -7 -8
Note:Fore PHD5039NUS, HDMI date of Standard mode is:0 0 -8
Offset:
TV AV S-Video ComponentVGA HDMI
R Gain -2 -2 -2 -1 -2 -1
G Gain -2 -2 -2 1 -1 -3
B Gain 6 6 6 7 7 9
Note:For PHD5039NUS, HDMI Offset date is :-1 -1 9
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Cool:
TV AV S-Video ComponentVGA HDMI
R Gain -3 -3 -3 -4 -2 -3
G Gain 0 0 0 0 -2 0
B Gain 0 0 0 0 -1 -1
Warm:
TV AV S-Video ComponentVGA HDMI
R Gain 14 14 14 11 9 14
G Gain 12 12 12 7 6 9
B Gain -12 -12 -12 -17 -19 -17
Plasma TV Service Manual
5.3.2 Video Curve:
TV AV S-Video Component VGA HDMI
Bright Max 620 620 620 700 660 670
Bright Min 0 0 0 0 0 0
Bright Mid 480 480 480 540 530 540
Movie Bright 40 40 40 40 40 40
Movie Contrast 40 40 40 40 40 40
Movie
Saturation
40 40 40 40 40 40
Plasma TV Service Manual
5.3.4 Volume Curve:
Min 20 Mid 80 Max
Data 0 18 24 34 46
Note:Set Downmix to “Lt/Rt”.
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Plasma TV Service Manual
6. Software Upgrading
The software is upgraded by a burning toll-MtkTool, which can burn the program file *.bin to the
main board of the unit.
6.1 Get ready for upgrading
6.1.1 Install the driver
Double click the icon , install the driver.
Select the default value, the driver will be installed step by step.
6.1.2 Hardware connecting
Connect the unit to your pc with a USB-to-serial port cable. USB port connects to your pc, and
serial port to the TV’s RS232 port.
USB connector: to PC.
Serial connector: to TV’s RS232
port.
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For the first connecting, the pc will recognize and automatically install the USB device. The
process is just like the installation of a mini disk, see the following picture.
Plasma TV Service Manual
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Plasma TV Service Manual
6.2 Upgrading with the MtkTool
The MtkTool using log is restored in the MtkLog folder. It records the running time and date
whenever the tool is used. The log will be a txt file named by the date and time.
MTKtool is a green program needing no installation. It is saved in the folder
. There are five folders/files in this folder altogether.
After connecting the TV with your PC, double click icon, open the
MtkTool.
If following error appears, it means the related port is not set properly.
Ignore these errors, click “Confirm” and enter the MtkTool main interface, see the
following picture.
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1 2 3 4 6
Plasma TV Service Manual
5
1—Flash chip model (for PLX-4202B and PLX-5002B, it will be MT537X).
2—The port through which the PC communicate with the chip.
3—The communicating baud rate
4—The new program file (*.bin) for upgrading.
5—Click this button can select the *.bin file to be used for upgrading.
6—Click to start upgrading.
7—Information displaying window.
Setting the communication port:
Open “Device Manager” and find which port is connected with the TV. In above picture, COM2
is connected to the TV; so, select “COM2” in the MtkTool main interface. Select the right baud rate
according to chip model. For this unit (chip model is MT5371), select 115200×2.
7
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Plasma TV Service Manual
Note: Where or not click the “Auto Set Flash Baud Rate” in the “window” menu depends on the
chip type. If the flash chip does not support high speed transport, do not select this option;
otherwise, reserve the selected mood. For these two units here, click off “Auto Set Flash Baud
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Rate”.
Click “Browse” button (5), find the upgrading program file, and select it. Press “Upgrade”
button and start upgrading.
The following interface appears on the screen- the word “Finished” shows in the information
displaying window, indicating upgrading successfully.
Plasma TV Service Manual
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b
Plasma TV Service Manual
7. Tr oubleshooting
7.1 Troubleshooting for Remote Control
Remote control does
not work
Try new
atteries
NO
Replace RC
YES
YES
Replace battery
Replace remote
control
Check IR receiver
Change Led
& IR board
YES
Replace Led & IR BD
NO
Change Led
& IR cable
YES
Replace Led & IR cable
NO
Replace main board
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Plasma TV Service Manual
7.2 Troubleshooting for Function Key
Buttons does not work
Check switches
YES
Replace tact switch
NO
Check key board
NO
Check Key BD cable
Change Key BD
YES
YES
Replace Key BD
OK
NO
Replace main board
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7.3 TV won’t Power On
Plasma TV Service Manual
TV won’t power on
Is LED
light?
NO
Check Power
Inlet
YES
Make Sure Power
source is live
YES
NO
BLUE
RED
OSD?
NO
YES
Check signal
Source
YES
NO
Check Power
Cord
NO
Try Power on by
RC and Button
Neither
works
Replace Main
BD
YES
Only
one works
Both
Work
Replace
Power Cord
Check/replace IR
BD or Keypad
PCA
NO
Replace Panel
Replace Main BD
OK
YES
Power on
NO
Replace Power BD
YES
OK
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Plasma TV Service Manual
7.4 Tr oubleshooting for Audio
No sound
Check connecter
YES
Reconnect
NO
Check speaker wire
NO
Check speaker set
YES
YES
Replace speaker wire
Replace speaker set
NO
Replace main board
NO
YES
OK
Replace PSU
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Plasma TV Service Manual
7.5 Troubleshooting for TV/VGA/HDMI/YPbPr input
No picture on the
screen
NO
Check Signal Source
Make sure signal
source is available
YES
Check connect
Reconnect
NO
Check cable
YES
Replace cable
NO
Replace main board
Note:If present signal source is VGA (1024×768) and the main power is turn off (such as by accident ),
there is a possibility that the TV will not turn on. In this case, please disconnect the VGA source from the
TV unit, then power on again. Connect the VGA source after the TV works normally,
POWER +3.3V
POWER +5V
POWER +3.3V
POWER +1.6V
POWER +3.3V
POWER +3.3V
POWER +2.6V
POWER +1.5V
POWER +1.28V
POWER +1.28V
1
POWER SUPPLY
POWER SUPPLY
POWER SUPPLY
STANDBY POWER
TUNER POWER
MT5112 POWER AND ITS PERIPHERAL
MT5112 POWER
MT5372 POWER AND ITS PERIPHERAL
MT5372 ANALOG POWER
MT5372 DDR POWER
MT5372 VIDEO FRONT-END POWER
MT5372 POWER
MT5372 ANALOG POWER
U_LHD3216US_ZB_C_06_MT5371 BYPASS CAP
LHD3216US_ZB_C_06_MT5371 BYPASS CAP..SchDoc