Toshiba 32LV933RB Schematic

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SERVICE MANUAL

LCD Color Television

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32LV933RB

Updating history

Currently there are no updates available. Please check back at a later time for any future updates.

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Ver. 1.00

DESTINATION SETTING CHANGE

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Whenever replacing the Main PCB with new one, perform this procedure.

1. IR Key MENU → APPLICATIONS → Sleep Timer → OK.

2. When display _ _ : _ 0 input 4 numbers 2766.

The Factory menu will display.

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3. Move to Tag "3" by Right/Left Arrow key on the Remote.

4. Select "Model Type" cell.

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5. Select the appropriate model type by Right/Left Arrow key on the Remote. Model type is written on the rating label.

6. Select "Reset to Def".

7. Select "Yes" and press "OK" button on the Remote.

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TOSHIBA WEB-ZEUS

FIRMWARE UPDATING PROCEDURE

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Firmware Upgrade - USB

USB upgrade flow

1. Firmware upgrade. Copy a Firmware BIN file to USB disk (root directory) with FAT 32. For example the naming as below. xx_xV_xL_DB_933x_022_REV00.bin, shall have difference version of firmware number show on red.

2. Plug USB disk into TV USB port.

3. IR key MENU → SETUP → Software Upgrade → USB Upgrade. During F/W upgrade will display percent on the screen when is finished will shown a message on LCD screen then unplug USB disk. TV will auto reset and power on again.

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Note:

Not allow copy more then 1 versions of firmware in USB disk.

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GREEN PRODUCT PROCUREMENT

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.

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SAFETY INSTRUCTION

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.

If the panel surface is extremely solied, use a CRT cleaner as a cleaner. Wipe off the panel

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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.

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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 RXE411 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 REX219 REX0+ 20 REX121 GND 22 REX023 RXO4+ 24 GND 25 RXO3+ 26 RXO427 RXOC+ 28 RXO329 GND 30 RXOC31 RXO2+ 32 GND 33 RXO1+ 34 RXO235 RXO0+ 36 RXO137 GND 38 RXO039 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_R6 +5V_Standby 2 SPK_R+

3 SPK_L4 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

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LEAD-FREE SOLDER

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.

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PARTS LIST

Precaution

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY PRECAUTION"

AND "PRODUCT SAFETY NOTICE".

CAUTION: The international hazard symbols " " in the schematic diagram and the parts list designate components which have special characteristics important for safety

and should be replaced only with types identical to those in the original circuit or specified in the parts list.

The mounting position of replacements is to be identical with originals. Before replacing any of these components, read carefully the "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE".

Do not degrade the safety of the receiver through improper servicing.

Note:

The part number must be used when ordering parts, in order to assist in processing, be

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sure to include the Model number and Description. The PC board assembly with mark is no longer available after the end of the production.

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Abbreviations

Capacitors CD : Ceramic Disk

Resistors CF : Carbon film OMF : Oxide Metal Film PF : Plastic Film CC : Carbon Composition VR : Variable Resistor EL : Electrolytic MF : Metal Film FR : Fusible Resistor

All CD and PF capacitors are ±5 %, 50 V and all resistor, ±5 %, 1/6 W unless otherwise noted.

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