Toshiba 32A3030D Service Manual
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Toshiba 32A3030D Service Manual

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SERVICE MANUAL
LCD Color Television
32A3030D
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
GREEN PRODUCT PROCUREMENT
and
LEAD-FREE
SOLDER.
© TOSHIBA CORPORATION

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  • Page 1 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 GREEN PRODUCT PROCUREMENT LEAD-FREE SOLDER. © TOSHIBA CORPORATION...

  • Page 2: Important Notice

    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.

  • Page 3: Green Product Procurement

    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.

  • Page 4: Lead-Free Solder

    LEAD-FREE SOLDER Page 1 of 1 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.
  • Page 5 Page 1 of 4 SAFETY INSTRUCTION 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.
  • Page 6 Page 2 of 4 inflammability, voltage resistance, etc. therefore, use only replacement parts that have these same characteristics. Use only the specified parts when the mark is indicated in the circuit diagram or parts list. 7. Parts mounting and routing dressing of wirings should be the same as that used originally.
  • Page 7 Page 3 of 4 Resistance values in orms (Ω). V: Voltmeter or oscilloscope (r.m.s. or peak reading) Input resistance : 1 MΩ Input capacitance : 200 pF Frequency range : 15 Hz to 1 MHz and d.c. respectively Note: Appropriate measures should be taken to obtain the correct value in case of non sinusoidal waveforms.

  • Page 8: Product Safety Notice

    Page 4 of 4 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.
  • Page 9 Page 1 of 4 SAFETY INSTRUCTION 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.
  • Page 10 Page 2 of 4 inflammability, voltage resistance, etc. therefore, use only replacement parts that have these same characteristics. Use only the specified parts when the mark is indicated in the circuit diagram or parts list. 7. Parts mounting and routing dressing of wirings should be the same as that used originally.
  • Page 11 Page 3 of 4 Resistance values in orms (Ω). V: Voltmeter or oscilloscope (r.m.s. or peak reading) Input resistance : 1 MΩ Input capacitance : 200 pF Frequency range : 15 Hz to 1 MHz and d.c. respectively Note: Appropriate measures should be taken to obtain the correct value in case of non sinusoidal waveforms.
  • Page 12 Page 4 of 4 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.
  • Page 13 Handling the LCD Module Page 1 of 4 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.
  • Page 14 Handling the LCD Module Page 2 of 4 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.
  • Page 15 Handling the LCD Module Page 3 of 4 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.
  • Page 16 Handling the LCD Module Page 4 of 4 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.
  • Page 18 Digital BOARD P212B (A3030D ONLY) Audio OUT CVBS CVBS OUT PJ212 IC302 Serial port Audio Amp for debug ITU-R656 P200B H801 +Low B PJ400 Digital VIDEO OUT AC INPUT& IC301 Tuner DVB-CI×1 UART IC801 POWER BOARD Audio DAC POWER BOARD IF Amp COFDM Demod IC401...

  • Page 19: Schematic Diagram

    Page 1 of 2 SCHEMATIC DIAGRAM Precaution WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION" FOR DIRECT VIEW CTV ONLY, "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" OF THIS MANUAL. 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.
  • Page 20 Page 2 of 2 = Electrolytic capacitor = Mylar capacitor 3. The parts indicated with " " have special characteristics, and should be replaced with identical parts only. 4. Voltages read with DIGITAL MULTI-METER from point indicated to chassis ground, using a color bar signal with all controls at normal, line voltage at nominal AC volts.

  • Page 121: Entering To Service Mode

    ADJUSTMENT Service Mode Entering to Service Mode 1. Set VOLUME to minimum and press button once on remote control. ↓ 2. Press button again and hold button down. ↓ Service Mode display...
  • Page 122 3. While holding the button, press MENU button on TV set. Displaying the Adjustment Menu Press MENU button on TV. Service Mode Press ↑ ↓ Press Adjustment Mode...
  • Page 123 Key Function in the Service Mode The following key entry during display of adjustment menu provides special functions. CAUTION: Never try to perform initialization unless you have changed the memory IC. Test signal selection button (on remote control) Selection of the adjustment items (on TV or remote control) Change of the data value Volume...

  • Page 124: Setting & Adjusting Data

    "UVTT" selection 6 button Automatic A/D Adjustment 7 button (PC, Component, Composite (PAL, NTSC)) Self diagnostic display ON/OFF 9 button Selecting the Adjusting Item Every pressing of CH button in the service mode changes the adjustment items in the order of table below.
  • Page 125 BDRV B DRIVE BRTC BRIGHTNESS CENTER COLC COLOR CENTER UVTT BASE BAND TINT CNTX CONTRAST MAX VOLUX MAX VOLUME LIMITED PLLW0 PLL WAIT TIME PLLW1 PLL WAIT TIME PLLW2 PLL WAIT TIME PLLW3 PLL WAIT TIME PLLW4 PLL WAIT TIME PLLW5 PLL WAIT TIME OPT1 TV SET OPTION 1...

  • Page 126: Function Description

    Adjusting the Data Pressing of VOLUME +/- button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item. I2C Bus Off Turn off I2C communication between IC700 and IC400. 1) Press and hold the CALL button on the remote control, then press the Volume + button on the TV.
  • Page 127 Panel option data Series Model name Panel vendor OPT4 value OPT5 value A3000 EU Digital/Ready 26A3030D/A3000P 0x01 0x03 0x07 0x03 32A3030D/A3000P 0x01 0x05 0x07 0x05 37A3030D/A3000P 0x01 0x06 0x07 0x06 42A3030D/A3000P 0x01 0x07 Ex. OPT4 value 0x05 indicates that panel vendor is AUO AMVA.
  • Page 128 AUO PMVA AUO AMVA SAMSUNG Ex. OPT5 value 0x05 indicates that panel size is 32. OPT5 (bit7) (bit6) (bit5) (bit4) (bit3) (bit2) (bit1) (bit0) Size Convert from Bit (Binary) to Hex The table for converting from bit (D7-D0) to hex (0x**). BIT (Binary) High nibble Low nibble...
  • Page 129 E.g. If Bit D7-0 = 0101 1010, Hex data is 0x5A. Exit from Service Mode Pressing POWER button to turn off the TV once. Initialization of Memory Data of QA02 and Setting Data of Signal Unit After replacing QA02 or signal board, the following initialization is required. CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
  • Page 130 1) Enter the service mode. 2) Select menu of ID by pressing P or P during display of adjustment menu in the service mode. 3) Change ID data into MODEL ID to initialize by pressing + or -., refer to table below. 4) Press and hold the CALL button on the remote control, then press the CHANNEL button on the TV.
  • Page 131 0x09 26A3030D 0x10 32A3030D 0x11 32A3030D 0x12 37A3030D 0x13 37A3030D 0x14 42A3030D 0x15 0x16 0x17 0x18 0x19 0x20 0x21 0x22 0x23 0x24 0x25 0x26 0x27 0x28 0x29 0x30 0x31 0x32 0x33 Initializing Data setting flowchart after replacing the Signal Unit...

  • Page 133: Test Signal Selection

    Test Signal Selection Every pressing of button on the remote control changes the built-in test patterns on screen as described below in Service Mode. Picture Signal Red raster Green raster Blue raster All Black...

  • Page 134: Self-Diagnostic Function

    All White Self Diagnostic Function 1. Press "9" button on remote control during display of adjustment menu in the service mode. The diagnosis will begin to check if interface among IC's is executed properly. 2. During diagnosis, the following displays are shown. * Self check display and Item are subject to the models.
  • Page 135 (3) BL_STATUS : Counter for saving BackLight on error. This value is counted till 99 (Decimal). (4) Bus line : -- "OK" is normal SCL-GND (Red indication) : SCL-GND short circuit SDA-GND (Red indication) : SDA-GND short circuit SCL-SDA (Red indication) : SCL-SDA short circuit (5) Bus cont : --- "OK"...
  • Page 136 Version Check Mode 1. Press "9" button twice on remote control during display of adjustment menu in the service mode. The version of main MPU will be checked. 2. During Version Check, the following displays are shown. * Version check display and Item are subject to the models. (1) MAIN MPU : Version information of microprocessor Series name and Code Program Version (4 figure number) and OSD Version (2 figure number).
  • Page 137 (5) HDMI ID : HDMI ID information : Display 4 byte data. (6) SW Ver Version information of DB software as Toshiba release. (Only digital model.) (7) MW Ver Left side is Application and UI version information of DB software. (Only digital model.) Right side is Firmware (Driver) version information of DB software.
  • Page 138 (12) Model Name Model name information (ascii code). : Display 7 byte data. (13) LCD Panel Vendor information display The following Panel Vendor (DDD) and screen size (00) are displayed. Example : AUO-32 indicates that Vendor is AUO and Screen Size is 32 inch Status Check Mode 1.

  • Page 139: Screen Size

    (3) MAIN PLL : Main PLL information : Display 1 byte data at five. (4) SUB : Sub source information : Display RF position number (0 - 99) on the Sub screen, or Input Source (EXT1/2/3/HDMI etc.) This item displays only Double window model. (5) SUB FORMAT : Display Video and PC format information This item displays only Double window model.

  • Page 140: Function Description

    Enter to service mode and select Hotel Mode menu by pressing P or P After selecting Hotel Mode, press + to enter details setting in Hotel Mode. To select menu, press P or P and press OK to enter the adjustment menu of table bellow. To move the cursor in the adjustment, press + or 1.
  • Page 141 VOLUX FUNCTION DESCRIPTION 0 (Normal) D7 (bit7) ~ Max Limiter of Volume Control 0x00 ~ 0x7F (Normal: 0x7C) D0 (bit0) OPT6 FUNCTION DESCRIPTION 0 (Normal) D7 (bit7) Enable mode that POS or VIDEO program number Enable Disable will be appeared in forced when turn ON the main power D6 (bit6) ~ POS or VIDEO program number...

  • Page 142: Led Indication

    D2 (bit2) Enable mode that picture mode will be set in forced Enable Disable when turn ON the main power (Display the language only) D1 (bit1) ~ Forced picture mode 0 [dec]: Dynamic (mode-1) (Normal) D0 (bit0) 1 [dec]: Standard (mode-2) 2 [dec]: Mild (mode-3) 3 [dec]: Memory (mode-M) LED Indication...
  • Page 143 PANEL IDENTIFICATION Panel Identification If the several panels are alternatively used in the same model without amending the model name, the identification marking will be shown at the last digit of the set serial number on the specification label on the back cover. In servicing, do not alter the panel because several setting and parts are different.

  • Page 144: Parts List

    PARTS LIST Precaution WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION" FOR DIRECT VIEW CTV ONLY, "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" OF THIS MANUAL. 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.
  • Page 145 : Metal Film : Fusible Resistor All CD and PF capacitors are ±5 %, 50 V and all resistor, ±5 %, 1/6 W unless otherwise noted.
  • Page 146 CABINET Stand Exploded View A425 A426 A427 A428 A429...

  • Page 148: Function And Operation

    FUNCTION AND OPERATION The Remote Control Simple at-a-glance reference of your remote control.

  • Page 150: Controls And Input Connections

    FUNCTION AND OPERATION Controls and Input Connections A wide variety of external equipment can be connected to the input sockets on the side of the television. Whilst all the necessary adjustments and controls for the television are made using the remote control, the buttons on the television may be used for some functions.
  • Page 151 Using the Remote Control Using the Controls and Connections...
  • Page 152 FUNCTION AND OPERATION Tuning Digital Television for the First Time Before switching on the television put your decoder and media recorder to Standby if they are connected and ensure the aerial is connected. To set up the television use the buttons on the remote control.

  • Page 155: Digital Auto Tuning

    FUNCTION AND OPERATION Digital Auto Tuning Note: As new services are broadcast it will be necessary to re-tune the television in order to view them. Auto Tuning...

  • Page 158: Digital Programme Sorting, Manual Tuning

    FUNCTION AND OPERATION Digital Programme Sorting, Manual Tuning Note: When the television is switched off the mode being viewed at the time will automatically be selected when the television is switched back on. Programme Sorting...

  • Page 159: Manual Tuning

    Manual Tuning...
  • Page 160 FUNCTION AND OPERATION Tuning Analogue Mode for the First Time The Quick Setup feature will tune all analogue channels currently available in the area. To put the television into ATV mode press the to select ATV. button then use...
  • Page 162 FUNCTION AND OPERATION Analogue Manual Tune The television can be tuned-in manually using Manual tuning. For example: if the television cannot be connected to a media recorder/decoder with a SCART lead or to tune-in a station on another System. to move across the screen and select any of these Manual Tune options. Programme : The number to be pressed on the remote control.
  • Page 166 FUNCTION AND OPERATION Auto Tune Using Auto Tuning...

  • Page 168: Safety Instruction

    Handling the LCD Module 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.
  • Page 169 Handling the LCD Module 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.
  • Page 170 Handling the LCD Module 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.
  • Page 171 Handling the LCD Module 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.

  • Page 172: Panel Identification

    PANEL IDENTIFICATION Panel Identification If the several panels are alternatively used in the same model without amending the model name, the identification marking will be shown at the last digit of the set serial number on the specification label on the back cover.

  • Page 174: Specification

    SPECIFICATION...

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