Toshiba 19SLDT3 - User Manual

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document describes the Toshiba Combination 19/22 LCD TV and DVD Video Player with TELETEXT, models 19SLDT3 and 22SLDT3. These models are classified as "green products," indicating a focus on environmentally friendly design and replacement parts.

Function Description

The device integrates an LCD television with a DVD video player, offering a compact entertainment solution. It supports various audio and video formats, including DVD, DVD-R/RW, CD, CD-R/RW, and DivX. The inclusion of TELETEXT functionality provides access to text-based information services.

The core functionality is managed by several key components:

MPEG/MICON/DSP/RF AMP (IC4001): This integrated circuit handles the decoding of MPEG video, micro-controller operations, digital signal processing, and radio frequency amplification for DVD playback. It processes data from the DVD loader and outputs video, audio, and control signals.
Scaler (IC803): The scaler is responsible for processing and converting various input video signals (HDMI, PC, component, S-Video, composite) to the native resolution of the LCD panel, ensuring optimal display quality.
Power Control (IC501): Manages the power supply to all internal components, including the LCD panel, DVD motor, and various integrated circuits. It incorporates a switching regulator for efficient power conversion.
Audio Amplifier (IC8501, IC301): Amplifies audio signals for output to internal speakers and external audio connections.
Sub Micon (IC101): A secondary micro-controller that handles user interface inputs (remote control, front panel buttons), manages standby functions, and controls various peripheral operations.
DVD Loader (DSM3): The mechanical assembly responsible for loading and reading optical discs. It includes a motor drive (IC2301) for spindle, stepping, and sled movements.

Important Technical Specifications

Video Playback:

Formats: DVD, DVD-R/RW, CD, CD-R/RW, DivX.
Video Output: Component Video (Y, Pb, Pr), S-Video, Composite Video, HDMI.
Digital Video Output: DVI-PC Audio R/L (from HDMI/PC Audio In).

Audio Playback:

Formats: Digital Audio (CD, DVD), Dolby Digital, DTS Digital Out.
Audio Output: SPDIF (digital coaxial), Analog Audio (L/R).
Internal Speakers: Stereo audio output.

Display:

Type: LCD Panel.
Models: 19SLDT3 (19-inch), 22SLDT3 (22-inch).
Scaler Clock: 20.25 MHz (X801).

Power Supply:

AC Input: Standard AC power.
Output Voltages: +12V, +5.8V, +3.3V, +1.8V (multiple rails), +9V, +6V (for DVD motor).
Inverter: Backlight inverter for the LCD panel (IC7001, Q7004, T7001).
Power Control IC: FA5571N-D1-TE1 (IC501).
Switching MOSFET: 2SK3532-01MR (Q501).

Memory:

Flash Memory: 16M (IC4007 SST39VF1601-70-4C-EKE) for firmware and data storage.
SDRAM: 64M (IC4005 EM638165TS-6G) for temporary data storage during operation.

Connectivity:

Inputs: HDMI, PC Audio In, Component Video In, S-Video In, Composite Video In (AV2), DVD Loader.
Outputs: SPDIF, Analog Audio Out (L/R), Digital Out (DTS).
USB: Not explicitly mentioned but common for DivX playback.
Remote Control: Infrared (IR) receiver.

Tuner:

Type: CEH447A (TU5801).
Signals: SCL, SDA, SIF, CVBS, AGC.

Usage Features

Integrated Entertainment:

Combines TV and DVD player functions into a single unit, ideal for space-saving and simplified setup.
Supports various disc formats, providing flexibility for media consumption.
TELETEXT feature allows users to access broadcast text information.

User Interface:

Front Panel Controls: Buttons for Eject, Channel Down, Power, Menu, Channel Up, Volume Up, Volume Down, and Input selection.
Remote Control: Provides comprehensive control over all TV and DVD functions.
On-Screen Display (OSD): For navigating menus and settings.

Audio/Video Experience:

Dolby Digital and DTS Digital Out support for enhanced audio quality with compatible external audio systems.
Scaler ensures optimal picture quality from various input sources on the LCD panel.

Maintenance Features

Green Product Design:

The models are designated as "green products," implying a design focus on environmental sustainability.
Replacement parts described in the manual are specifically for these green products.
Lead-free solder is recommended for repairs, aligning with environmental standards.

Serviceability:

The manual provides detailed block diagrams (DVD, Power, Regulator, Main, Sound Amp, Backlight Inverter, Jack, AV Switch, Sub Micon, Tuner, Scaler, Panel Interface, Loading Motor), schematic diagrams, and printed circuit board layouts (top and bottom sides) to facilitate troubleshooting and repair.
Waveforms are provided for various test points, aiding in signal integrity verification during diagnostics.
Specific cautions are highlighted for critical components (marked with "A" in parts lists), emphasizing the use of original or approved replacement parts for safety.
DC voltage measurements at various test points are specified for playback conditions, offering a reference for technicians.

Modular Design:

The device is composed of several distinct PCBs (DVD MT, Main, Power, Operation/Remocon, Loading Motor, Tuner), which can simplify component-level repair and replacement.
Connectors between PCBs are clearly identified, making assembly and disassembly straightforward.

Safety Precautions:

Warnings regarding fire hazards for fuse replacement (F7001) are provided, stressing the importance of using the correct type and rating.
General safety warnings are included for parts marked with "A" in the parts list, indicating critical components for safety.