This document is a service manual for the Toshiba 40LV655P LCD Color Television, version 2.01. It provides essential information for servicing and repairing the device, including technical specifications, usage instructions, and maintenance procedures. The model is classified as a "green product," indicating that it is manufactured using lead-free solder and replacement parts for environmental responsibility.
Function Description
The Toshiba 40LV655P is an LCD Color Television designed for home entertainment. It supports various input sources, including RF (antenna/cable), external video inputs (SCART, Component, Composite, HDMI, PC), and USB for media playback. The television is equipped with an internal sound system and can also output audio to external speakers or headphones. It features a user-friendly interface for tuning channels, adjusting picture and sound settings, and accessing service modes for diagnostics and repair.
Important Technical Specifications
- Model: 40LV655P
- Display Type: LCD Color Television
- Panel Vendor: SAMSUNG (for 40LV655P)
- Operating Environment:
- PC: Pentium III or higher recommended
- Monitor Resolution: 1024 x 768 or higher recommended
- Mouse: A mouse with wheel recommended
- OS: Microsoft Windows 2000 SP4 / XP / Vista
- Browser: Microsoft Internet Explorer 6.0 / 7.0
- Drawing Viewer: Autodesk DWF Viewer 6.0 / 7.0
- Broadcast Systems/Channels:
- PAL I: UHF E21-U69
- PAL B/G: VHF E2-E12, S1-S41
- SECAM L: VHF F1-F10, B, Q
- SECAM D/K: VHF R1-R12, UHF E21-E69
- Video Input PAL, SECAM, NTSC: 3.58/4.43
- External Connections:
- EXT1 (SCART): 21-pin SCART (RGB, A/V, Y, Pb/Cb, Pr/Cr, S-video, Audio L+R)
- EXT2 (SCART): 21-pin SCART (A/V, S-video, Audio L+R)
- EXT3 (Input): Phono jacks (Y, Pb/Cb, Pr/Cr, Audio L+R)
- EXT4 (Input Side): Phono jacks (Video, Audio L+R)
- HDMI 1/2 (Input): HDMI (Audio L+R, DDC supported)
- HDMI3 (Input Side): HDMI (Audio L+R, DDC supported)
- PC (Input): Mini D-sub 15-pin Analog RGB signal
- PC/HDMI Audio (Input): 3.5mm mini jack (Audio)
- USB Port: USB Type A (for JPEG photo files, File system: FAT12/16/32)
- Stereo System: Nicam, A2 stereo system
- Visible Screen Size:
- 32LV655P: 80cm
- 37LV655P: 94cm
- 40LV655P: 107cm
- Display Aspect Ratio: 16:9
- Sound Output (RMS, Stereo): Main 10W + 10W
- Power Consumption:
- 32LV655P: 87W (Normal), 111W (Max)
- 37LV655P: 111W (Normal), 117W (Max)
- 40LV655P: 117W (Normal), 122W (Max)
- Standby Power:
- 32LV655P: 0.4W
- 37LV655P: 0.4W
- 40LV655P: 0.4W
- Dimensions (approx.):
- 32LV655P: 57cm (H) 79cm (W) 29cm (D) (with stand), 52cm (H) 79cm (W) 10cm (D) (without stand)
- 37LV655P: 62cm (H) 90cm (W) 29cm (D) (with stand), 57cm (H) 90cm (W) 10cm (D) (without stand)
- 40LV655P: 66cm (H) 98cm (W) 35cm (D) (with stand), 61cm (H) 98cm (W) 10cm (D) (without stand)
- Weight (approx.):
- 32LV655P: 10.5kg (with stand), 9.5kg (without stand)
- 37LV655P: 13.5kg (with stand), 12.5kg (without stand)
- 40LV655P: 15.0kg (with stand), 14.0kg (without stand)
- Headphone Socket: 3.5mm stereo
- Operating Condition: Temperature 5°C - 35°C (41°F - 94°F), Humidity 20 - 80% (non-condensing)
- Accessories: Remote control (CT-90326), 2 batteries (AAA, IEC R03 1.5V), Cleaning cloth
Usage Features
- Remote Control: The television comes with a remote control (CT-90326) for easy operation, including power on/standby, volume control, channel selection, input source switching, text services, and menu navigation.
- Front and Side Panel Controls: Physical buttons on the TV's front and side panels provide basic control for power, volume, channel, and input selection.
- First-Time Setup: A "Quick Setup" wizard guides users through initial configuration, including language, country, and location (Home/Store) settings, followed by an "Auto tuning" process to find available channels.
- Input Versatility: Multiple input options (SCART, Component, Composite, HDMI, PC, USB) allow connection to various external devices like DVD players, game consoles, computers, and USB drives for media playback.
- Hotel Mode: A dedicated "Hotel Mode" offers advanced settings for commercial or hospitality environments, allowing control over features like forced TV power on, program number display, speaker volume limits, and disabling certain user controls.
- Picture Modes: Users can select from various forced picture modes (Dynamic, Standard, Mild, Movie) to optimize the viewing experience.
Maintenance Features
- Service Mode: The television includes a service mode accessible via a specific remote control sequence. This mode provides access to:
- Test Signal Selection: Built-in test patterns (Red raster, Green raster, Blue raster, All Black, All White) for display diagnostics.
- Initialization of TV Micro Data: A procedure for initializing memory data after replacing the Digital Board, ensuring correct model ID and panel vendor settings.
- Self Diagnostic Function: Checks the interface among ICs and displays information such as firmware version, total TV on-time, bus line status, bus control status, UV reception mode, and A/D AGC adjustment status.
- Version Check Mode: Displays detailed version information for the main MPU, EEPROM, option settings, HDMI EDID, Boot Loader, Application software, A/D AGC adjustment, DSP EEPROM, and model name/panel vendor.
- Adjustment Menu: Allows adjustment of various parameters like RCUT, GCUT, BCUT, RDRV, GDRV, BDRV, and offset values for different color temperatures (Cool, Natural, Warm).
- Software Update: The manual outlines a procedure for updating the TV's software using a USB drive, involving extracting update files, connecting the USB drive, and monitoring LED indications for update status.
- LED Indications: The front panel LEDs provide visual cues for the TV's status, including Standby (Red ON), Power ON (Green ON), BUS Error (Red LED blinks continuously at 0.5-second intervals), and Power Protect Error (Red LED blinks continuously at 1.0-second intervals).
- Safety Precautions: The manual emphasizes critical safety instructions for servicing, such as using an isolation transformer, disconnecting power, reassembling protective devices, keeping tools away from children, wearing gloves when servicing with power on, using specified replacement parts (especially for safety-critical components marked with a triangle), ensuring correct wiring, and never remodeling the product.
- LCD Module Handling: Specific precautions for handling the LCD module are provided, including avoiding contact with liquid crystal fluid, careful alignment during assembly, cleaning instructions (using cotton or a soft cloth, CRT cleaner for heavy soiling), preventing fluid accumulation on the screen, avoiding dropping or striking the panel, using a wrist ground for static electricity protection, and not exposing it to direct sunlight or strong UV rays.
- Lead-Free Solder: The product is manufactured using lead-free solder, and the manual explicitly warns against using lead-based solder for repairs to prevent damage to components and PCBs due to higher melting temperatures.
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