2.4 System Board Troubleshooting

2 Troubleshooting Procedures

 

 

Table 2-3 D port status (4/7)

 

 

 

 

 

 

D port status

Inspection items

Details

 

 

 

 

 

 

 

F105h

 

Initializing and testing( only in Cold Boot) a PIT

 

 

 

 

Setting a test pattern to the channel 0 of a PIT#0

 

 

 

 

Checking whether the test pattern can be read.

 

 

 

 

Initializing PIT channel 0 (Timer interrupt interval

 

 

 

 

55ms)

 

 

 

 

Initializing PIT channel 2 ( Frequency for sound

 

 

 

 

generator 664Hz)

 

 

 

 

Testing the channel 1 of a PIT( checking whether the

 

 

 

 

refresh signal is generated correctly in refreshing cycle

 

 

 

 

of 30 μs)

 

 

 

 

When a time-out, HLT.

 

 

 

 

Testing the channel 2 of a PIT (checking whether the

 

 

 

 

speaker gate operate correctly)

 

 

 

 

Measuring CPU clock

 

 

 

 

Enabling SMI other than of auto-off function

 

 

 

 

Controlling battery discharging current (1CmA)

 

 

 

 

Control of over current than rated current of AC adapter

 

 

 

 

Processing of dividing for measuring time of IRT

 

 

 

 

Initializing CPU

 

 

 

 

Updating micro -code

 

 

 

 

Checking of supporting Geyserville

 

 

 

 

Set the CPU clock to High

 

 

 

 

Setting Graphics Aperture Size

 

 

 

 

 

 

 

F106h

Checking the default

Storing the memory configuration

 

 

 

settings of CMOS

 

 

 

 

Reading EC version

 

 

 

 

 

 

 

 

 

 

 

 

 

Updating the type of flash ROM

 

 

 

 

 

 

 

 

 

Judging the country of destination

 

 

 

 

 

 

 

 

 

Checking the default settings of CMOS

 

 

 

 

Bad Battery, Bad CheckSum default setting

 

 

 

 

 

 

 

 

 

Initializing ACPI table

 

 

 

 

 

 

 

 

 

Setting devices before initializing PCI bus

 

 

 

 

AC’97 control

 

 

 

 

Initializing information of thermal control

 

 

 

 

Initializing a KBC

 

 

 

 

Turning VGA display off and controlling reset

 

 

 

 

Initializing sound function

 

 

 

 

 

 

 

 

 

Getting the computer multiple box status

 

 

 

 

 

 

 

 

 

Initializing HC and recognizing/initializing USB device

 

 

 

 

connection

 

 

 

 

 

 

PORTEGE A100 Maintenance Manual (960-460)

2-23

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Image 64
Toshiba manual Portege A100 Maintenance Manual

A100 specifications

The Toshiba A100 series represents a notable range of laptops that combines performance and versatility, catering specifically to the needs of both casual users and professionals. Launched with an emphasis on multimedia capabilities and productivity, the A100 series showcases an array of features designed to enhance the user experience.

One of the primary characteristics of the Toshiba A100 is its robust design. The laptop typically features a sleek, compact chassis that is both aesthetically pleasing and practical, making it easy to carry for those on the move. The build quality is commendable, with a durable exterior that can withstand the rigors of daily use.

Under the hood, the A100 series is powered by Intel’s core processors, which offer a balanced blend of performance and power efficiency. This enables smooth multitasking and quick application launches, ensuring that users can handle demanding tasks without lag. The inclusion of generous RAM options allows for an enhanced computing experience, making this laptop suitable for both work and entertainment.

The display of the Toshiba A100 is another highlight, often featuring a vivid, high-resolution screen that delivers sharp images and vibrant colors. This makes it an excellent choice for watching movies, editing photos, or simply enjoying everyday tasks. Additionally, some models in the series offer an anti-glare coating, reducing reflections and providing a more comfortable viewing experience in various lighting conditions.

Connectivity options are comprehensive, with multiple USB ports, HDMI outputs, and a multi-card reader. This ensures that users can easily connect to peripherals, external displays, and transfer files with ease. The inclusion of Wi-Fi and Bluetooth capabilities facilitates seamless integration into modern home and office environments.

Furthermore, the Toshiba A100 series includes advanced audio technologies, such as built-in stereo speakers that enhance the multimedia experience. The laptop often features Toshiba's sound enhancement technologies, delivering clear and dynamic sound for music, movies, and video calls.

Lastly, battery performance is a critical aspect of the Toshiba A100 series. Many models are optimized for extended use, allowing users to work or play for hours on a single charge. This combination of efficient hardware and thoughtful design results in a laptop that not only meets but exceeds the expectations of its users.

In conclusion, the Toshiba A100 series stands out with its robust performance, impressive display, and user-friendly features, making it a compelling choice for those seeking a reliable and stylish laptop for various applications.