Toshiba 8M26C service manual Troubleshooting

Page 45

TROUBLESHOOTING

NO PICTURE, NO SOUND

1.Check if the fuse or circuit breaker is working.

2.Plug another electrical device into the outlet to make sure it is working or turned on.

3.Power plug is bad contact with the outlet.

4.Check the signal source.

NO COLOR

1.Change the color system.

2.Adjust the saturation.

3.Try another channel. Black-white program may be received.

REMOTE CONTROL DOES NOT WORK

1.Change the batteries.

2.Batteries are not installed correctly.

3.Main power is not connected.

NO PICTURE, NORMAL SOUND

1.Adjust the brightness and contrast.

2.Broadcasting failure may happen.

NORMAL PICTURE, NO SOUND

1.Press the volume up button to increase volume.

2.Volume is set to mute, press MUTE to restore sound.

3.Change the sound system.

4.Broadcasting failure may happen.

UNORDERLY RIPPLES ON THE PICTURE

It is usually caused by local interference, such as cars, daylight lamps and hair driers. Adjust the antenna to minimize the interference.

BLANK SCREEN IN PC MODE

Perhaps the TV can not recognize the resolution set by the PC. Suggest to change to the best resolution or other standard resolutions of Windows system.

Set refresh rate to be 60Hz.

SNOWY DOTS AND INTERFERENCE

If the antenna is located in the fringe area of a television signal where the signal is weak, the picture may be marred by dots. When the signal is extremely weak, it may be necessary to install a special antenna to improve the reception.

1.Adjust the position and orientation of the indoor/outdoor antenna.

2.Check the connection of antenna.

3.Fine tune the channel.

4.Try another channel. Broadcasting failure may happen.

IGNITION

Black spots or horizontal streaks appear, or the picture flutters or drifts. This is usually caused by interference from car ignition system, neon lamps, electric drills, or other electrical appliance.

GHOST

Ghosts are caused by the television signal following two paths. One is the direct path, the other is reflected from tall buildings, hills, or other objects. Changing the direction or position of the antenna may improve the reception.

RADIO FREQUENCY INTERFERENCE

This interference produces moving ripples or diagonal streaks, and in some case, loss of contrast in the picture. Find out and remove the radio interference source.

-45-

Image 45
Contents 8M266 Chassis 11-17 19-20 21-28 29-45 50-57 LED 8M26S Component For 22 LED Inches is 4 ohm Inches is 3W 12000 YES Y0 50 U10 IC Block Diagram U28 1A 3.3V SOT-223 AS1117L-ADJ PIN Diagram MST6E181VS U29 (4MX16BIT Banks DDR) M13S2561616A-5TG2K  0%,7&02665,$//$6+ 623 PS331 U1DUAL BTL Class D Audio Amplifier TPA3113D2 Page Main PCB Top/Bottom Layer Main PCB Top/Bottom Layer 8M26S Factory Adjust Menu V0.2 Description ADC adjusts White balance Page More information Lvds BIT Pwmfrequency Page Volume Curve Backlight Hotel Function Hotel Mode Front Panel External Schematic and InstallationBack Panel Antenna /Cable Connection Zoom Media Remote ControlBasic Operation Picture SettingsDNR Sound SettingsSetup Settings Installation Settings0000 Advanced SettingsAuto Adjust PC SettingsMedia File Playback Support Gentle Reminder When Using The Media PlayerMedia Menu Video Control Bar Video MenuMusic Control Bar Music MenuPhoto Control Bar Photo MenuText Control Bar Text MenuTroubleshooting No audio & No backlight Has video but no audio Has video but no color Flow Chart 100mA 1517 D74 MST6M181VS P1 HDMI1REAR +5VUSB1 PC-R PC-L For 100mA

8M26C specifications

The Toshiba 8M26C is a cutting-edge microcontroller that is part of Toshiba's renowned microcontroller family, designed specifically to meet the demands of modern applications in automation, embedded systems, and consumer electronics. With its robust architecture and rich feature set, the 8M26C stands out for its versatility and performance.

One of the main highlights of the Toshiba 8M26C is its high-performance 16-bit microcontroller core, which operates at an impressive clock speed of up to 20 MHz. This enables the chip to handle complex computations and execute multiple tasks efficiently, making it suitable for a wide range of applications from Industrial control systems to home appliances.

The 8M26C is equipped with ample memory resources featuring up to 16 KB of Flash memory for program storage and up to 1 KB of RAM for data handling. This generous memory allocation supports a variety of applications, allowing for the development of sophisticated firmware without the constraints found in lower-end microcontrollers.

Another significant feature of the 8M26C is its integrated peripherals. The microcontroller comes with a versatile set of interfaces, including multiple GPIO (General Purpose Input/Output) pins, an ADC (Analog-to-Digital Converter) with 10-bit resolution, and timers. This extensive range of peripherals facilitates sensor integration, motor control, and communication with other devices, enabling developers to create complex and interactive systems with ease.

Additionally, the 8M26C supports various communication protocols such as UART and SPI, which enhance its connectivity options. This makes it suitable for IoT applications where data exchange between devices is crucial.

Power efficiency is another strong point of the 8M26C. It incorporates low-power modes that help extend battery life in portable applications while maintaining operational readiness.

In terms of characteristics, the Toshiba 8M26C features a compact package design which aids in the integration into space-constrained environments. Its reliability is bolstered by advanced semiconductor technology, ensuring robust operation under various environmental conditions.

In conclusion, the Toshiba 8M26C is a powerful 16-bit microcontroller that combines performance, flexibility, and efficiency. Its well-rounded specifications make it an ideal choice for developers looking to create innovative and reliable embedded solutions across various industries.