Undetermined Problems

The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative.

Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU). NOTE: Verify that all attached devices are supported by the computer.

NOTE: Verify that the power supply being used at the time of the failure is operating correctly. (See “Power System Check” on page 71.):

1.Power-off the computer.

2.Visually check them for damage. If any problems are found, replace the FRU.

3.Remove or disconnect all of the following devices:

Non-Acer devices

Printer, mouse, and other external devices

Battery pack

Hard disk drive

DIMM

CD-ROM/Diskette drive Module

PC Cards

4.Power-on the computer.

5.Determine if the problem has changed.

6.If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.

7.If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU: System board

LCD assembly

86

Chapter 4

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Acer 5560, 5540 manual Undetermined Problems, Dimm

5560, 5540 specifications

The Acer 5560 and 5590 series laptops are well-regarded for their balance of performance and affordability, making them popular choices among students and budget-conscious consumers. These models are part of Acer's larger lineup and are known for their reliable functionality, portable design, and essential features that cater to everyday computing needs.

Both the Acer 5560 and 5590 are equipped with AMD processors, specifically designed to deliver efficient multitasking capabilities and ensure smooth performance in various applications. The AMD A-Series processors enable quick data processing and enhance graphics performance, making these laptops suitable for light gaming and multimedia tasks. Additionally, they often come with integrated AMD Radeon graphics, providing decent visual experiences for casual users.

One of the standout features of these models is their display. The laptops typically feature a 15.6-inch HD or Full HD screen, providing vibrant colors and clear images. The LED-backlit display not only enhances power efficiency but also contributes to the slim form factor, making the laptops easy to carry around for students or professionals on the go.

In terms of storage, users can opt for a traditional hard disk drive (HDD) or a solid-state drive (SSD), which allows for flexibility based on performance requirements and budget. The inclusion of an optical drive is another characteristic that appeals to users who still rely on CDs and DVDs, although this feature may be becoming less common in newer models.

Both models also boast a range of connectivity options. Users can benefit from multiple USB ports, HDMI output, and an Ethernet port for wired connectivity, in addition to Wi-Fi and Bluetooth capabilities for seamless wireless communications. With integrated webcams and microphones, these laptops are also well-suited for video conferencing and online collaborations.

The battery life of the Acer 5560 and 5590 series is another appealing aspect, often providing several hours of usage on a single charge. This ensures that users can work or enjoy media without constantly worrying about plugging in.

In conclusion, the Acer 5560 and 5590 series combine essential features with solid performance, making them reliable options for those in need of a functional laptop without breaking the bank. Their robust build quality, decent specifications, and practical design elements cater well to a variety of user needs, from educational activities to casual entertainment.