Chapter 7. Troubleshooting and diagnostics

This chapter describes some basic troubleshooting and diagnostic programs. If your computer problem is not described here, see Chapter 8, “Getting information, help, and service,” on page 53 for additional troubleshooting resources.

Basic troubleshooting

The following table provides information to help you troubleshoot your computer problem.

Symptom

Action

 

 

The computer does not start

Verify that:

when you press the power

v The power cord is plugged into the rear of the computer and into a working

button.

electrical outlet.

 

 

v If your computer has a secondary power switch on the back of the computer,

 

ensure that it is switched on.

 

v The power indicator on the front of the computer is on.

 

If you cannot correct the problem, have the computer serviced. Refer to the

 

warranty and safety information that is provided with your computer for a list of

 

service and support telephone numbers.

 

 

The monitor screen is blank.

Verify that:

 

v The monitor cable is securely attached to the rear of the monitor and to the

 

rear of the computer.

 

v The monitor power cord is plugged into the monitor and into a working

 

electrical outlet.

 

v The monitor is turned on and the brightness and contrast controls are set

 

correctly.

 

v The monitor signal cable is securely connected to the monitor and to the

 

monitor connector on the computer.

 

Note: If your computer has two monitor connectors, verify that your monitor is

 

connected to the one in the AGP option connector rather than the one in the rear

 

of the system board. For more information, “Connecting your computer” on page

 

3.

 

If you cannot correct the problem, have the computer serviced. Refer to the

 

warranty and safety information that is provided with your computer for a list of

 

service and support telephone numbers.

 

 

The keyboard does not work.

Verify that:

The computer does not respond

v The computer is turned on.

to the keyboard.

v The monitor is turned on and the brightness and contrast controls are set

 

 

correctly.

 

v The keyboard is securely connected to a USB connector on the front or rear of

 

the computer.

 

v No keys are stuck.

 

If you cannot correct the problem, have the computer serviced. Refer to the

 

warranty and safety information that is provided with your computer for a list of

 

service and support telephone numbers.

 

 

© Lenovo 2005, 2006. Portions © IBM Corp. 2005.

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Lenovo 8009, 8795, 8791, 8807, 8803, 8799, 8812 manual Troubleshooting and diagnostics, Basic troubleshooting
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8803, 8799, 8795, 8812, 8807 specifications

Lenovo has made significant strides in the smartphone market over the years, and among its noteworthy models are the Lenovo 8807, 8803, 8795, 8812, and 8791. Each of these devices brings a unique set of features, technologies, and characteristics that cater to different user preferences.

Starting with the Lenovo 8807, this model stands out with its robust performance, powered by a high-speed processor that delivers smooth multitasking capabilities. It features a high-resolution display, ensuring that users enjoy vivid colors and sharp visuals whether they are gaming, streaming videos, or browsing the web. The camera system on the 8807 is also impressive, equipped with multiple lenses that adapt to various lighting conditions, allowing for stunning photography.

The Lenovo 8803, on the other hand, emphasizes portability without compromising performance. It boasts a sleek design and lightweight construction, making it easy to carry around. The battery life is remarkable, providing all-day usage on a single charge, which is ideal for users who are constantly on the go. The device also offers various connectivity options, including 5G support, enabling users to enjoy fast internet speeds for seamless online experiences.

The Lenovo 8795 appeals to users seeking value for money. This model delivers essential features such as a decent camera, a reliable battery, and an intuitive user interface. It is designed to handle everyday tasks effortlessly, making it a great choice for those who do not need high-end specifications but still want a trustworthy smartphone that gets the job done.

Moving to the Lenovo 8812, this device merges style with functionality. It features an elegant design, utilizing premium materials that give it a sophisticated look. The display is expansive, providing an immersive experience for media consumption. Additionally, the 8812 comes with advanced security features, including facial recognition and fingerprint scanning, ensuring that user data remains safe.

Lastly, the Lenovo 8791 targets a niche market with its focus on durability. Built with military-grade materials, it is resistant to water, dust, and drops. This rugged smartphone is perfect for outdoor enthusiasts and those who work in challenging environments. Furthermore, it has enhanced battery management, allowing for extended usage in remote areas without frequent charging.

In summary, Lenovo's lineup including the 8807, 8803, 8795, 8812, and 8791 showcases the brand’s commitment to producing devices that meet diverse user needs, whether in terms of performance, design, or durability. Each model represents a blend of technology and practicality, making Lenovo a competitive player in the smartphone market.
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