HP 4520S, 4720S manual

12.Remove the hard drive (see Hard drive on page 87).

13.Remove the top cover (see Top cover on page 103).

When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board:

●Memory module (see Memory module on page 60)

●WLAN module (see WLAN module on page 70)

●WWAN module (see WWAN module on page 76)

●Modem module (see Modem module on page 110)

●Processor (see Processor on page 83)

●Audio board (see Audio board on page 112) Remove the system board:

1.Position the computer right-side up with the front toward you.

2.Remove the M2.0x3.0 screw on the left of the system board (1).

3.If this is a 17.3-in computer, remove the single M2.0 x 3.0 screw (2) that secures the optical drive connector to the base.

NOTE: The 15.6-in computer does not use a separate optical drive connector.

4.Lift the board at an angle (3) and remove the optical drive extender (4).

5.Slide the board partially out of the base pan (5).

Component replacement procedures 115

4720S, 4520S specifications

The HP ProBook 4720s is a well-engineered business laptop that combines performance, durability, and affordability, making it suitable for professionals and small business owners alike. Introduced as part of the HP ProBook series, this model stands out for its robust build quality and essential features tailored to meet the demands of various work environments.

One of the main features of the HP 4720s is its 17.3-inch display. This spacious screen provides a generous workspace for multitasking, with a resolution of 1600 x 900 pixels. The anti-glare technology helps reduce reflections, ensuring that users can work comfortably in different lighting conditions. The large screen also makes it suitable for presentations and sharing visuals with colleagues.

Under the hood, the HP ProBook 4720s is equipped with Intel's second generation Core processors. The inclusion of options such as the Intel Core i5 and i7 provides users with the power necessary for demanding applications while maintaining energy efficiency. With up to 8GB of DDR3 RAM, multitasking is seamless, allowing users to run multiple applications simultaneously without experiencing lag.

Storage options are varied, including traditional hard drives and solid-state drives which offer faster data access speeds. This flexibility ensures that users can choose the configuration that best fits their needs, balancing performance and storage capacity.

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Moreover, the laptop's design features a sturdy chassis that meets military specifications for durability. This ruggedness is complemented by a spill-resistant keyboard, which enhances its usability in various environments.

Overall, the HP ProBook 4720s embodies a balance of performance, functionality, and durability. Its features cater well to business users seeking a reliable device, making it a commendable choice in the competitive landscape of laptops. Whether for office use or on-the-go productivity, the HP 4720s delivers a solid computing experience.