Toshiba 40LV733F Schematic
SERVICE MANUAL
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LCD Color Television
40LV733F
Ver. 2.00
This model is classified as a green product (*1), as indicated by the underlined serial number. This
Service Manual describes replacement parts for the green product. When repairing this green
product, use the part(s) described in this manual and lead-free solder (*2).
For (*1) and (*2), refer to
© TOSHIBA CORPORATION
GREEN PRODUCT PROCUREMENT
and
LEAD-FREE SOLDER
.
FIRMWARE UPDATING
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Software updating procedure (using USB Mass-storage
device)
1. Copy APP code upgrade.pkg to USB flash disk (root folder).
Figure 1 USB Mass-storage device
2. Plug the USB device into the USB slot on the TV.
Figure 2 USB slot
3. Software updating wizard will be displayed. Select "YES" and press "OK" button on
the remote control to start the updating.
Figure 3 Updating wizard 1
Figure 4 Updating wizard 2
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4. Turn the TV off/on to install the software automatically.
5. Unplug USB flash disk and Turn the TV off/on again.
Figure 5 Unplug USB flash disk
6. Press "MENU" button, then press "0000" on the remote control to check the firmware
version.
Figure 6 Software version checking display
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FUNCTION AND OPERATION
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The Remote Control
Simple at-a-glance reference of your remote control.
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FUNCTION AND OPERATION
NOTE:
provider for details.
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Using the Controls
While all the necessary adjustments and controls for the television are done using the remote
control, the buttons on the television may be used for some functions.
COMMON INTERFACE (CI)
The common interface is for a Conditional Access Module (CAM). Contact a service
Switching On
Using the Remote Control
Using the Side-panel Controls
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FUNCTION AND OPERATION
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Tuning the Television
Before switching on the television, put your decoder and media recorder to
are connected.
Make sure to connect the aerial cable, and select TV as the input source.
To set up the television, use the buttons on the remote control.
Initial Setup
Standby
if they
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SAFETY INSTRUCTION
should enter the mouth, rinse the mouth thoroughly with water. If the fluid should contact the
When attaching the LCD module to the LCD cover, position it appropriately and fasten
Стр. 1 из 4Handling the LCD Module
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Handling the LCD Module
Safety Precaution
In the event that the screen is damaged or the liquid crystal (fluid) leaks, do not breathe in or
drink this fluid.
Also, never touch this fluid. Such actions could cause toxicity or skin irritation. If this fluid
skin or clothing, wipe off with alcohol, etc., and rinse thoroughly with water. If the fluid
should enter the eyes, immediately rinse the eyes thoroughly with running water.
Precautions for Handling the LCD Module
CAUTION: The metal edges of the LCD module are sharp, handle it with
care.
The LCD module can easily be damaged during disassembly or reassembly; therefore,
always observe the following precautions when handling the module.
1.
at the position where the display can be viewed most conveniently.
2. Carefully align the holes at all four corners of the LCD module with the corresponding
holes in the LCD cover and fasten with screws. Do not strongly push on the module
because any impact can adversely affect the performance. Also use caution when
handling the polarized screen because it can easily be damaged.
Стр. 2 из 4Handling the LCD Module
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3. If the panel surface becomes soiled, wipe with cotton or a soft cloth. If this does not
remove the soiling, breathe on the surface and then wipe again.
If the panel surface is extremely solied, use a CRT cleaner as a cleaner. Wipe off the
panel surface by drop the cleaner on the cloth. Do not drop the cleaner on the panel.
Pay attention not to scratch the panel surface.
4. Leaving water or other fluids on the panel screen for an extended period of time can
result in discoloration or stripes. Immediately remove any type of fluid from the screen.
5. Glass is used in the panel, so do not drop or strike with hard objects. Such actions can
damage the panel.
6. CMOS-LSI circuitry is used in the LCD module, so avoid damage due to static
Стр. 3 из 4Handling the LCD Module
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electricity. When handling the module, use a wrist ground or anchor ground.
7. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for an
extended period of time.
8. Do not store the LCD module below the temperature conditions described in the
specifications. Failure to do so could result in freezing of the liquid crystal due to cold
air or loss of resilience or other damage.
9. Do not disassemble the LCD module. Such actions could result in improper operation.
Стр. 4 из 4Handling the LCD Module
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10. When transporting the LCD module, do not use packing containing epoxy resin
(amine) or silicon resin (alcohol or oxim). The gas generated by these materials can
cause loss of polarity.
LCD PANEL
T-COM Board
30P or 51p/1.25mm
power
14P
/
CN903 CN902
CN408
CN128
Main Board
Power Board
Inverter
Board
CH+
CH-
/
2.0mm
CN701
715G3705
26/32:715G3714
VOL+
VOL-
MENU
CN401
40:715G3713
SOURCE
C
C
N001
Speaker
IR+LED
Speaker
CN201
715G3945
715G3730
SAFETY INSTRUCTION
Always keep tools, components of the product, etc away from the children, These items
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WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY
PRECAUTION" AND "PRODUCT SAFETY NOTICE" INSTRUCTIONS BELOW.
Safety Precaution
WARNING: SERVICING SHOULD NOT BE ATTEMPTED BY ANYONE
UNFAMILIAR WITH THE NECESSARY PRECAUTIONS ON THIS RECEIVER.
THE FOLLOWING ARE THE NECESSARY PRECAUTIONS TO BE OBSERVED
BEFORE SERVICING THIS CHASSIS.
1. An isolation transformer should be connected in the power line between the receiver
and the AC line before any service is performed on the receiver.
2. Always disconnect the power plug before any disassembling of the product. It may
result in electrical shock.
3. When replacing a chassis in the cabinet, always be certain that all the protective
devices are put back in place, such as nonmetallic control knobs, insulating covers,
shields, isolation resistor-capacitor network, etc.
4.
may cause injury to children.
5. Depending on the model, use an isolation transformer or wear suitable gloves when
servicing with the power on, and disconnect the power plug to avoid electrical shock
when replacing parts. In some cases, alternating current is also impressed in the
chassis, so electrical shock is possible if the chassis is contacted with the power on.
6. Always use the replacement parts specified for the particular model when making
repairs. The parts used in products require special safety characteristics such as
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