Index of Symptom-to-FRU Error Message

NOTE: If the symptom or error for your problem condition is not listed in this section, refer to the “Undetermined Problems” section on page 81.

LCD-related Symptoms

Symptom/Error

Action in Sequence

 

 

LCD backlight doesn't work

Run the Setup Utility, then press F9 to load the system

LCD is too dark

defaults.

LCD brightness cannot be adjusted

Reconnect the LCD-CCD cable.

LCD contrast cannot be adjusted

Keyboard (if contrast and brightness function key doesn't

 

work).

 

LCD-CCD cable

 

Inverter board

 

LCD panel

 

System board

 

 

Unreadable LCD screen

Reconnect the LCD-CCD cable.

Missing pels in characters

LCD cable

Abnormal screen

Inverter board

Wrong color displayed

LCD panel

 

System board

 

 

LCD has extra horizontal or vertical lines

Inverter board

displayed.

LCD-CCD cable

 

LCD panel

 

System board

 

 

Power-related Symptoms

Symptom/Error

Action in Sequence

 

 

Power shuts down during operation

Power source (battery pack and power adapter). Refer to the

 

“Power System Check” section on page 67.

 

Battery pack

 

Power adapter

 

System board

 

 

The system won’t power on.

Power source (battery pack and power adapter). Refer to the

 

“Power System Check” section on page 67.

 

Battery pack

 

Power adapter

 

System board

 

 

The system won’t power off.

Power source (battery pack and power adapter). Refer to the

 

“Power System Check” section on page 67.

 

Hold and press the power button for more than four seconds.

 

System board

 

 

Battery won’t charged

Refer to the “Check the Battery Pack” section on page 67.

 

Battery pack

 

System board

 

 

Chapter 4

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Acer 4520 manual Index of Symptom-to-FRU Error Message, LCD-related Symptoms

4520 specifications

The Acer 4520 laptop is a versatile and economically accessible device that caters to a wide variety of computing needs. Launched in the mid-2000s, this laptop became particularly popular among students and working professionals, thanks to its balance of performance, portability, and affordability.

One of the standout features of the Acer 4520 is its durable yet lightweight design, which weighs around 2.6 kg. This makes it easy to carry around, whether for commuting to school or taking it to a coffee shop for remote work. The 15.4-inch screen with a resolution of 1280 x 800 pixels provides a decent visual experience, suitable for both productivity tasks and media consumption.

In terms of performance, the Acer 4520 is typically equipped with AMD processors, such as the AMD Turion X2 or Athlon series, which are designed to deliver competent multitasking capabilities. The laptop usually comes with 1GB or 2GB of RAM, allowing users to run essential applications smoothly. Additionally, the device features a 120GB to 250GB hard drive, providing ample storage space for documents, photos, and multimedia files.

Connectivity is another strong point of the Acer 4520. It comes with a variety of ports, including USB 2.0, VGA, and audio jacks, as well as a built-in webcam for video conferencing and social interaction. The laptop supports Wi-Fi connectivity, enabling users to access the internet wirelessly, which is essential for both personal and professional use.

The Acer 4520 also integrates several multimedia features, including a DVD-RW drive for reading and writing optical discs, along with built-in speakers that deliver sound decent enough for casual listening. Additionally, it supports Acer's own PowerSmart technology, which helps manage battery life and optimize performance, allowing users to prolong their usage time during on-the-go scenarios.

Furthermore, the laptop offers a user-friendly operating system, commonly shipped with Windows Vista or later versions, providing a familiar environment for users. Overall, the Acer 4520 stands out with its balanced range of features, reliability, and economical price point, making it an attractive option for budget-conscious individuals seeking a capable laptop for everyday tasks. This blend of utility and performance ensures that the Acer 4520 remains relevant for basic computing needs even years after its initial release.