Hisense LHD32D33EU Service Manual
R
LCD Television
Service Manual
Product T
yp
e: LHD32D33EU
Chassis: SIS231
Hisense Electric Co.,Ltd
AUG,2013
LCD TV Service Manual
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Contents
Contents
................................................................................................................................................................- 2 -
Service Manual
....................................................................................................................................................- 3 -
1. Precautions and notices..............................................................................................................................- 3 -
1.1 Warning............................................................................................................................................- 4 -
1.2 Notes.................................................. ..............................................................................................- 6 -
2. Product Specifications: ..............................................................................................................................- 8 -
2.1 Specification: ...................................................................................................................................- 8 -
2.2 Main Board: ....................................................................................................................................- 9 -
2.3 Wiring Diagram: .............................................................................................................................- 10
3. Factory/Service OSD Menu and Adjustment............................................................................................- 11 -
3.1 To enter the Factory OSD Menu ....................................................................................................-11-
3.2 Factory OSD Menu.........................................................................................................................- 11 -
4. Software Upg rading..................................................................................................................................- 12 -
4.1 Get ready for upgrading.................................................................................................................- 12 -
4.2 Using factory menu to upgrade………..........................................................................................- 12 -
4.3 Upgrad e when power up............................................................. ....................................................- 13-
4.4 Using uart2spi_tool to upgrade ...................... ................................................................................- 23 -
5. Power assign & Signal process.................................................................................................................- 15 -
5.1 SIS231 Power assign .....................................................................................................................- 15 -
5.2 SIS231 Signal process ...................................................................................................................- 15 -
5.3. Troubleshooting ............................................................................................................................- 16 -
6. Schematic circuit diagram .......................................................................................................................- 32 -
7. Explode view ...........................................................................................................................................- 42 -
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LCD TV Service Manual
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Service Manual
1. Precautions and notices
BEFORE SERVICING THE LCD TV, READ THE SAFETY PRECAUTIONS IN
THIS MANUAL.
USE ONLY MANUFACTURER SPECIFIED REPLACEMENT PARTS WHEN
SERVICING.
USE OF NON-AUTHORIZED PARTS WILL VOID THE MANUFACTURE'S
WARRANTY
Proper service and repair is important to the safe, reliable operation of all Hisense
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 is that improper service methods may damage the
equipment and pose risk of personal injury
. It is also important to understand that these CAUTIONS and NOTICES ARE NOT
EXHAUSTIVE. Service should only be performed by an experienced electronics
technician trained in the proper Television safety and service methods and procedures
Hereafter throughout this manual, Hisense will be referred to.
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1.1 Warnin
g
1.1.1
Critical components having special safety characteristics are identified with a by
the Ref. No. in the parts list. Use of non-manufacturer's recommended parts may create
shock, fire, or other hazards. Under no circumstances should the original design be
modified or altered without written permission from Hisense assumes no liability,
express or implied, arising out of any unauthorized modification of design. Service tech
assumes all liability.
*DANGERCAUTION
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY
ORIGINAL MANUFACTURER'S REPLACEMENT PARTS, WHICH ARE LISTED
WITH THEIRPART NUMBERS IN THE PARTS LIST SECTION OF THIS SERVICE
GUIDE.
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, be
sure to use antistatic table mats and properly use a grounding wrist strap. Keep
components and tools also at this same potential.
IMPORTANT:
Always disconnect the power cord from AC outlet before replacingparts or modules.
1.1.3
To prevent electrical shock, use only a properly grounded 3 prong outlet or extension
cord.
1.1.4
substitutions may result in fire, electric shock, or other hazards and will void the
manufacturer's warranty.
1.1.5
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Safety regulations require that after a repair the set must be returned in its original
condition. In addition, prior to closing set, check that:
>All wire harnesses and flex cables are properly routed and secured with factory tape
and/or mounted cable clamps.
> All cables and connectors are properly insulated and do not have any bare wires/lead
exposed.
1.1.6
(1) Do not supply a voltage higher than that specified to this product. This may damage
the product and may cause a fire.
(2) Do not use this product:
> High humidity areas
> In an area where any water could enter or splash into the unit.
High humidity and water could damage the product and cause fire.
(3) 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.
(4) 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.
(5) Do not pull out or insert the power cable from/to an outlet with wet hands. It may
cause electric shock.
(6) Do not damage or modify the power cable. It may cause fire or electric shock.
(7) 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.
(8) I f 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.
(9) 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.
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1.2 Notes
Notes on Safe Handling of the LCD panel and during service
The work procedures shown with the Note indication are important for ensuring the
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 board, start servicing at least 2 minutes after the main power has
been turned off.
· While the main power is on, do not touch any parts or circuits other than the ones
specified. If any connection other than the one specified is made between the measuring
equipment a nd the high voltage power supply block, it can result in electric shock or may
trip the main circuit breaker When installing the LCD module in, and removing it from
the packing carton, be sure to have at least two persons perform the work.
· 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 observe this precaution may result in, the surface of the panel being scratched
by foreign matter.
· 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
short-circuits due to residual electric charge.
· 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
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the screws, parts and cables removed for servicing purposes have all been returned to
their proper locations in accordance with the original setup.
The lightning flash with arrowhead symbol, within an equilateral triangle is
intended to a lert the user to the presence of insinuated dangerous voltage within the
products enclosure that may be of sufficient magnitude to 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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LCD TV Service Manual
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2. Product Specifications:
2.1 Specification:
Notes:Features,appearance and specifications are subject to change without notice.
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2.2 Main Board:
The “main board & power board image”is only for reference, other SIS231 products
refer to the actual units to determine the boards, please.
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2.3 Wiring Diagram:
Note:
The above Wiring Diagram is only for reference, other SIS231 products
refer t o the actual units to determine the connectors, please.
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LCD TV Service Manual
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3. Factory/Service OSD Menu and Adjustment
3.1 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.
4. Press “M” button exit factory mode in the factory OSD menu.
When TV outgoing factory,user can not enter factory OSD menu with Factory Remote
b. With user’s RC
1. Power TV On
2. Press Menu button and call up User OSD Menu
3. Select Sound-> Balance
4. When Balance value is “0”, Enter 1->9->6 ->9 in sequence.
Note: If necessary, re-do number keys.
5. Factory OSD appears.
6. Press the standby button then AC turn off and restart the TV, which can exit factory
OSD menu.
3.2 Factory OSD Menu
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4. Software Upgrading
4.1 Get ready for upgrading
Unzip the compressedsoftware program, you’ll get a BIN file named SISEU23X8M.bin
Copy this BIN file to the root directory of your USB flash disk.
4.2 Using factory menu to upgrade
4.2.1 Copy the BIN file to the USB root directory,insert the USB disk to theside of the
USB interface of the main board.
4.2.2 Enter the factory menu（balance+1969), select “Update‐> USB Update‐>
USB Update Start”. The LED indicator will flash red and blue when upgrading.
The system begins to upgrade when the upgrade file automatically loaded, and displays a
progress bar in the OSD, with LED lights flash.
4.2.3 After update success, it will have the following tips. Please AC off and AC on.
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4.2.4 Confirm the software Version in the Version Menu. If the update is successful,
enter the Factory Menu and select “Init TV”
4.3 Upgrade when power up
4.3.1 Make sure the TV is AC off.
4.3.2 Copy the BIN file to the USB root directory,insert the USB disk to theside of the
USB interface of the main board.
4.3.3 AC on, the LED indicator will start flash red and blue till the upgrade is finished.
The red light and green light flashing at 1/4 seconds intervals.Please AC off and AC on.
4. 4 Using uart2spi_tool tool to upgrade
Serial port can upgrade the whole program. Serial port upgrade is very slow, it takes
about 20 minutes.As far as possible without serial upgrade.The serial upgrade tools
isuart2spi_tool.Serial port upgrade steps:
4.4.1.Open the serial port upgrade kits uart2spi_tool, choosing the right serial number.
4.4.2.Click "connect".
4.4.3.AC on.
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