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Toshiba 32W2353RB - User Manual

Toshiba 32W2353RB
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SERVICE MANUAL
LCD Color Television
32W2353RB
REVISED:01

Table of Contents

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Overview

  1. Function Description
  2. Important Technical Specifications
  3. Usage Features
  4. Maintenance Features

This document is a service manual for the Toshiba 32W2353RB LCD Color Television. It provides essential information for servicing, maintaining, and understanding the device, including safety instructions, technical specifications, and operational procedures.

Function Description

The Toshiba 32W2353RB is an LCD Color Television designed for home entertainment. It features various input/output options for connecting external devices and includes specific functionalities for hotel environments. The television supports both analog and digital broadcast signals (ATV/DTV).

Important Technical Specifications

General:

  • Model: 32W2353RB
  • Type: LCD Color Television
  • Revision: 01 (as of Dec/19/2014)

Power and Connectivity:

  • Power Board (E250): Handles power distribution, including 12V, 5VSB (5V Standby), and various control signals like ACD (AC Detect), PS ON (Power Supply On), BL EN (Backlight Enable), and PWM1 (Pulse Width Modulation).
  • Main Board (E200A/B/C): The central processing unit of the television, integrating various functionalities.
  • Panel (T-CON) (E310A/B/C): Supports different panel types (AUO/SAM or LG) with specific part numbers (75033844, 75033845 for AUO/SAM; 75033846, 75033847 for LG). It provides PANEL VCC, GND, and various RXA/RXB signals for display data, along with BRIGHT ADJ and OCP OUTPUT PWM for backlight control.
  • LED Board (E260): Controls the LED backlight, with inputs for LED Brightness (LED Bri), Ring Red, and Ring Green.
  • IR Board (E270): Handles infrared remote control signals and ambient light sensing (ALS).
  • Speaker Output (E340): Provides audio output to external speakers (SPK L+, SPK L-, SPK R+, SPK R-).

Input/Output Ports (Main Board - MSD8841BX):

  • DVB-T/T2/C Silicon Tuner: For receiving digital terrestrial, cable, and satellite broadcasts.
  • PCMCIA Slot: For Common Interface (CI) modules.
  • VGA: RGB-In/H/V/DDC for connecting computers.
  • HDMI (1, 2): Supports TDMS-A/B In/DDC, ARC (Audio Return Channel) on HDMI 1, and MHL (Mobile High-Definition Link) on HDMI 2.
  • SCART (Full): L/R-Out, AV Out, RGB In/AV In, L/R-In, YPbPr In.
  • Component: L/R-In, YPbPr In, AV In, L/R-In.
  • USB (1 SIDE): DP0/DM0, DP1/DM1 for connecting USB devices.
  • SPDIF Out: Digital audio output.
  • Ethernet-Tx/Rx: For network connectivity.
  • L/R OUT: Audio line out.
  • Earphone (TPA6132): Headphone output.
  • I2S BUS / I2C BUS: Internal communication buses.
  • SAR I/F: For Power KEY, "+", "-", P/V/AV KEY inputs.
  • IR In: For IR/ALS Board.
  • LED I/F: For LED Board.

Internal Components (MSD8841BX):

  • DDR3 2GBit: Memory, supporting Hynix H5TQ2G63DFR-PBC or Samsung K4B2G1646E-BCK0000 (DDR3-1600 11-11-11 / 64MB*16).
  • DDR3 1GBit: Memory, supporting Hynix H5TQ1G63DFR-PBC or Samsung K4B1G1646G-BGK0 (DDR3-1600 11-11-11 / 64MB*16).
  • SPI Flash 64MBit: For firmware storage, supporting Windbond W25Q64FVSSIG.
  • NAND Flash: For data storage, supporting Hynix H27U2G8F2C or Toshiba TC58NVG1S3ETA00.
  • MSB-1230 Demod: For demodulation of tuner signals.

Firmware File Naming Convention:

  • xxx23xxx_001_REV00.bin
    • xx: TV size.
    • x23xxx: Model series.
    • 001: Firmware version (e.g., 001 is 0.01, 100 is 1.00).
    • REV00: Fixed for revision 00.

Usage Features

Hotel Mode: The television includes a "Hotel Mode" with various customizable settings, designed for use in hospitality environments.

  • Entering Hotel Mode:
    1. Press "MUTE" on the remote (display shows [mute]).
    2. Within 2 seconds, press "MUTE" again and hold for 3 seconds.
    3. Press "INPUT" on the TV side. The hotel mode menu will appear.
  • Exiting Hotel Mode: Turn the TV power off.
  • Hotel Mode Settings:
    • Hotel Mode On/Off: Enables or disables hotel mode.
    • Panel Lock: Inhibits all buttons on the TV body.
    • Panel Lock W/O Input Selector Keys: Inhibits all buttons except input selector keys.
    • Disable Remote Control: Inhibits the remote control.
    • Disable All Menu: Disables all user menus.
    • Disable Setup Menu: Inhibits the setup menu.
    • Setup Menu W/O Lang.: Inhibits the setup menu except for language settings.
    • Max Volume Setting: Sets the maximum volume (0-100 decimal).
    • Digital Tuner: Enables or hides DTV source selection.
    • USB Port: Controls MEDIA source selection from the USB port (enable/hide MEDIA in inputs menu, disable USB but enable 5V power).
    • TV to USB: Clones TV data (user settings, hotel mode settings, channel table) to a USB disk.
    • USB to TV: Clones data from a USB disk to the TV.
    • Disable NIT Update: Enables or disables Network Information Table (NIT) updates.
    • Detect SCART: Controls automatic source switching via SCART Pin8.
    • Fixed Pos/Video: Fixes the position/video setting when AC power is applied.
    • Fixed Volume: Forces a specific volume setting.
    • Fixed Picture Mode: Sets a fixed picture mode (Dynamic, Standard, Mild, Movie, Memory).
    • Welcome Message: Updates the logo or displays a custom message on TV power-on. Supports JPG files (<= 1360x768, < 64KB, named "Hotel_Logo.jpg").
    • Teletext: Enables or disables Teletext functions.
    • ATV/DTV P+/P-: Enables or disables P+/P- functions for ATV/DTV.
    • TV Power: Controls TV power state on AC power application (returns to previous standby/on, power on, or standby).
    • Reset Menu: Resets all Hotel Mode settings to default.

Copying Hotel Mode Setting (TV to USB):

  1. Insert a USB flash disk into the TV USB port.
  2. Press "MUTE" twice (MUTE icon disappears), then press "SOURCE" on the keypad. The "Hotel Menu" will appear.
  3. Select "TV to USB" and press Left/Right to choose "YES". Press "OK".
  4. The hotel settings will be copied to the USB disk as HOTEL_xxx23xxx.BIN. An OSD message "Please wait..." will appear, followed by "OK!".

Copying Hotel Mode Setting (USB to TV - Method 1):

  1. Insert a USB disk with the HOTEL_xxx23xxx.BIN file into the TV USB port.
  2. Press "MUTE" twice, then "SOURCE" on the keypad. The "Hotel Menu" will appear.
  3. Select "USB to TV" and press Left/Right to choose "YES". Press "OK".
  4. The hotel settings will be copied from the USB disk to the TV. An OSD message "Please wait..." will appear, followed by "Please remove USB memory, then TV will be reset automatically".

Copying Hotel Mode Setting (USB to TV - Method 2):

  1. Insert a USB disk with the HOTEL_xxx23xxx.BIN file into the TV USB port.
  2. Reboot the TV (AC Off/On) to update hotel settings automatically. The set will show "Hotel Mode Settings Update Please Wait".
  3. The OSD message "Please wait..." will disappear, then "Update is finished. Please remove USB memory, then TV will be reset automatically."
  4. Remove the USB disk, then turn AC Off/On to reboot the TV. The new settings will be active.

Firmware Upgrade (USB):

  1. Copy the firmware BIN file (e.g., xxx23xxx_001_REV00.bin) to the root directory of a USB disk.
  2. Plug the USB disk into the TV USB port.
  3. Reboot the TV (AC Off/On) to automatically update the firmware.
  4. During the upgrade, an OSD will display "USB Upgrade" with a percentage, and the power status LED will blink.
  5. Once the upgrade is finished, a message "Software update has finished. Please remove USB memory, then TV will be reset automatically." will be shown. Unplug the USB disk.
  6. The TV will reset automatically.

Maintenance Features

Important Notice:

  • The manual warns against unauthorized modification or alteration of information or data provided. Toshiba is not liable for damages resulting from such actions.
  • The information and data are provided "AS IS" without warranty of any kind.

Green Product Procurement:

  • Toshiba promotes WEEE & RoHS Directives and uses lead-free solder in its products.
  • Lead-Free Solder 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 (30°C to 40°C) than that of leaded solder. Use a soldering iron designed for lead-based solders. Proper soldering techniques are crucial for high-quality soldering.

Safety Instruction:

  • Servicing Warning: Servicing should not be attempted by anyone unfamiliar with the necessary precautions.
  • Isolation Transformer: An isolation transformer should be connected in the power line between the receiver and the AC line before any service is performed.
  • Power Plug Disconnection: Always disconnect the power plug before disassembling the product to prevent electrical shock.
  • Chassis Replacement: When replacing a chassis, ensure all protective devices (nonmetallic control knobs, insulating covers, shields, isolation resistor-capacitor network) are put back in place.
  • Component Handling: Keep tools, components, etc., away from children.
  • Isolation Transformer/Gloves: When servicing, use an isolation transformer or wear suitable gloves. If the chassis is contacted with power on, electrical shock is possible.
  • Replacement Parts: Use only specified replacement parts with the same safety characteristics. These are identified by international hazard symbols on schematic diagrams and parts lists.
  • Wiring and Dressing: Parts mounting and routing of wirings should be the same as originally used. Ensure wires are routed and clamped to avoid heat generation and high voltage.
  • Internal Wiring: Ensure all internal wirings are in accordance with re-assembling the external casing after a repair. Do not allow internal wiring to be pinched by cabinets, panels, etc.
  • Remodeling: Never remodel the product.
  • Touch Current Check: After completing work, measure touch current to prevent electrical shock.
    • Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
    • Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground such as a water pipe.
    • Touch Current Limits:
      • The potential at any point (TOUCH CURRENT) expressed as voltage U1 and U2 must not exceed the following values:
  • Open-circuit voltage should not exceed 35 V (peak) a.c. or 60 V d.c.
  • TOUCH CURRENT (U1 and U2) should not exceed:
  • For a.c.: U1 = 35 V (peak) and U2 = 0.35 V (peak)
  • For d.c.: U1 = 1.0 V
  • Note: Limit values of U2 = 0.35 V (peak) for a.c. and U1 = 1.0 V for d.c. correspond to 0.7 mA (peak) a.c. and 2.0 mA d.c.

Product Safety Notice:

  • Many electrical and mechanical parts have special safety-related characteristics. These are identified by international hazard symbols on schematic diagrams and parts lists.
  • Before replacing components, read the parts list carefully. Using substitute parts without the specified safety characteristics may cause electrical shock, fire, or other hazards.

After Main PCB Replacement:

  1. Enter Factory Menu: MENU -> Applications -> Sleep Timer + "2766".
  2. Select Panel Type: Go to page 3 of the Factory Menu and select the correct panel type (full panel name, not just vendor name). Panel type information is on the panel serial number sticker.
  3. Exit Factory Mode: Press EXIT.
  4. TV Restart: If the correct panel type was set, the TV will display a proper picture after restarting.
    • Caution: Setting the wrong panel type may result in no picture and make it difficult/impossible to adjust settings afterwards.

Toshiba 32W2353RB Specifications

General IconGeneral
BrandToshiba
Model32W2353RB
CategoryLCD TV
LanguageEnglish

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