Toshiba 40HL933G User manual

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SERVICE MANUAL
LCD Color Television
40HL933G Ver. 1.00
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WARNING:
You are requested that you shall not modify or alter the information or data provided
herein without prior written consent by Toshiba. Toshiba shall not be liable to anybody
for any damages, losses, expenses or costs, if any, incurred in connection with or as a
result of such modification or alteration.
THE INFORMATION OR DATA HEREIN SHALL BE PROVIDED "AS IS" WITHOUT ANY
WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED WARRANTY OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Toshiba shall not be liable for any damages, losses, expenses or costs, if any, incurred
in connection with or as a result of use of any information or data provided herein.
IMPORTANT NOTICE
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The EC is actively promoting the WEEE & RoHS Directives that define standards for recycling
and reuse of Waste Electrical and Electronic Equipment and for the Restriction of the use of
certain Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any
marketing of new products containing the restricted substances.
Increasing attention is given to issues related to the global environmental. Toshiba Corporation
recognizes environmental protection as a key management tasks, and is doing its utmost to
enhance and improve the quality and scope of its environmental activities. In line with this,
Toshiba proactively promotes Green Procurement, and seeks to purchase and use products,
parts and materials that have low environmental impacts.
Green procurement of parts is not only confined to manufacture. The same green parts used in
manufacture must also be used as replacement parts.
GREEN PRODUCT PROCUREMENT
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This product is manufactured using lead-free solder as a part of a movement within the
consumer products industry at large to be environmentally responsible. Lead-free solder must be
used in the servicing and repair of this product.
WARNING: This product is manufactured using lead free solder.
DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT!
The melting temperature of lead-free solder is higher than that of leaded solder by 86ºF to 104ºF
(30ºC to 40ºC). Use of a soldering iron designed for lead-based solders to repair product made
with lead-free solder may result in damage to the component and or PCB being soldered. Great
care should be made to ensure high-quality soldering when servicing this product especially
when soldering large components, through-hole pins, and on PCBs as the level of heat required
to melt lead-free solder is high.
LEAD-FREE SOLDER
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Product Safety Notice
Many electrical and mechanical parts in this chassis have special safety-related characteristics.
These characteristics are often passed unnoticed by a visual inspection and the protection
afforded by them cannot necessarily be obtained by using replacement components rated for
higher voltage, wattage, etc. Replacement parts which have these special safety characteristics
are identified in this manual and its supplements; electrical components having such features are
identified by the international hazard symbols on the schematic diagram and the parts list.
Before replacing any of these components, read the parts list in this manual carefully. The use of
substitute replacement parts which do not have the same safety characteristics as specified in
the parts list may create electrical shock, fire, or other hazards.
SAFETY INSTRUCTION
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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 should
enter the mouth, rinse the mouth thoroughly with water. If the fluid should contact the 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. When attaching the LCD module to the LCD cover, position it appropriately and fasten 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.
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.
SAFETY INSTRUCTION

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 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.
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.
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P201 P202 CN1 CN12
1 24V 1 12V 1 +12V_NORMAL 1 PANEL_VCC
2 24V 2 12V 2 +12V_NORMAL 2 PANEL_VCC
3 24V 3 12V 3 +12V_NORMAL 3 PANEL_VCC
4 24V 4 GND 4 GND 4 PANEL_VCC 5 24V 5 GND 5 GND 5 OD_OCP_SEL 6 GND 6 GND 6 GND 6 PANEL_VCC 7 GND 7 5VSB 7 +5V_Standby 7 RXE4+ 8 GND 8 5VSB 8 +5V_Standby 8 GND 9 GND 9 5VSB 9 +5V_Standby 9 RXE3+
10 GND 10 ACD 10 ACDetect 10 RXE4-
11 BRIGHT_ADJ 11 BD_PS_ON 11 GND 11 RXEC+
12 INV_ON_OFF 12 BRIGHT_ADJ 12 OCP_OUTPUT_PWM 12 RXE3-
13 INV_ON_OFF 13 INVERTER_ON_OFF 13 GND 14 PS_ON 14 STANDBY 14 RXEC-
15 RXE2+ 16 GND 17 RXE1+ 18 REX2- 19 REX0+ 20 REX1- 21 GND 22 REX0- 23 RXO4+ 24 GND 25 RXO3+ 26 RXO4- 27 RXOC+ 28 RXO3- 29 GND 30 RXOC- 31 RXO2+ 32 GND 33 RXO1+ 34 RXO2- 35 RXO0+ 36 RXO1- 37 GND 38 RXO0- 39 BRIGHT_ADJ 40 OCP_OUTPUT_PWM
CN2
1 GND 2 LED_TIMER 3 LED_ON_OFF 4 LED_ON_OFF CN11 5 IRIN 1 SPK_R- 6 +5V_Standby 2 SPK_R+
3 SPK_L- 4 SPK_L+
CN202
1 +5V_STBY 2 IRIN 3 GND 4 LED_ON_OFF 5 LED_ON_OFF 6 LED_TIMER
IR_LED BORAD
Speaker
MAIN BOARD
PSU Unit
PANEL (T-CON)
PANEL INVERTER
Speaker