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Toshiba 48L5455R User Manual

Toshiba 48L5455R
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SERVICE MANUAL
LCD Color Television
48L5455R
48L5443DG
48L3448DG
40L3448DG
32L3448DG
(System Information)
FILE NO. 050-2014172
REVISED:01
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Toshiba 48L5455R Specifications

General IconGeneral
Screen Size48 inches
Display TypeLCD
Backlight TypeLED
HDMI Ports3
USB Ports2
Wi-FiYes
Smart TVYes
Refresh Rate50 Hz
Operating SystemToshiba Smart Portal
Resolution1920 x 1080
Weight13.5 kg
Audio Output16W (8W x 2)

Summary

IMPORTANT NOTICE

GREEN PRODUCT PROCUREMENT

LEAD-FREE SOLDER

SAFETY INSTRUCTION

FIRMWARE UPDATING PROCEDURE

Analog - Digital SW update via USB

Procedure for updating TV software via USB for analog and digital.

When TV is ON

Steps for upgrading TV software when the TV is already powered on.

HOTEL MODE/HOTEL CLONE

Hotel Mode

Activates hotel mode, restricting user access to certain TV functions.

Last Status

Sets whether the TV opens in standby or last used status.

Volume Limit

Sets the maximum allowable volume level.

Fixed Volume Enable

Enables or prohibits the use of a fixed volume value.

Fixed Volume Value

Sets a specific fixed volume value for the TV.

Headphone Direct Volume

Enables direct control of headphone volume via remote.

Panel Lock

Enables or prohibits the use of front panel buttons.

OSD Disable

Disables specific menus or all menus from the On-Screen Display.

Startup Position

Specifies the starting channel or input when the TV is switched on.

Teletext

Enables or prohibits the use of teletext or MHEG if available.

Copy To USB

Copies NVRAM data (service list, preferences) to a USB device.

Copy From USB

Copies NVRAM data from a USB device to the TV.

GENERAL BLOCK DIAGRAM

LED DRIVER CIRCUIT

MB CONNECTOR OPTIONS

Options for connecting the MB (Main Board) connector.

WO/CONVERTER CONNECTOR OPT.

Optional connector for WO/Converter.

PRIMER-SECONDER COMPONENTS

Components related to primer-seconder functions.

DISCRETE BRIDGE OPTION.

Optional discrete bridge configurations.

X CAP OPTIONS

Options related to X capacitor configurations.

CHANNEL OPTIONS

Options for LED driver channels.

TROUBLESHOOTING (17MB95M)

A. NO BACKLIGHT PROBLEM

Troubleshooting for no picture and no backlight on the panel.

DIMMING

Troubleshooting backlight dimming issues.

PANEL SUPPLY SWITCH

Troubleshooting panel supply switch functionality.

B. CI MODULE PROBLEM

Troubleshooting issues with the CI module.

C. STAYING IN STAND-BY MODE

Troubleshooting device stuck in standby mode.

D. IR PROBLEM

Troubleshooting non-functional LED or IR.

E. KEYPAD TOUCHPAD PROBLEMS

Troubleshooting keypad or touchpad not working.

F. USB PROBLEMS

Troubleshooting USB not working or no detection.

G. NO SOUND PROBLEM

Troubleshooting lack of audio at main TV speaker outputs.

H. STANDBY ON/OFF PROBLEM

Troubleshooting device unable to boot or stuck in standby.

İ. NO SIGNAL PROBLEM

Troubleshooting no signal issues in TV mode.

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