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Lenovo 27763DU, 27763PU, 27763CU manual Beep symptoms, No-beep symptoms

Models: 27763CU 27763DU 27763PU

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Beep symptoms

Table 3. Beep symptoms

Symptom or error

FRU or action, in sequence

 

 

 

One beep and a blank, unreadable, or

1.

Reseat the LCD connector.

flashing LCD.

2.

LCD assembly.

 

3.

External CRT.

 

4.

System board.

 

 

 

One long and two short beeps, and a blank

1.

System board.

or unreadable LCD.

2.

LCD assembly.

 

3.

DIMM.

 

 

Two short beeps with error codes.

POST error. See “Numeric error codes” on

 

page 39.

 

 

 

Two short beeps and a blank screen.

1.

System board.

 

2.

DIMM.

 

 

 

Three short beeps, pause, three more short

1.

DIMM.

beeps, and one short beep.

2.

System board

 

 

 

One short beep, pause, three short beeps,

 

 

pause, three more short beeps, and one short

 

 

beep.

 

 

 

 

Only the cursor appears.

Reinstall the operating system.

 

 

Four cycles of four short beeps and a blank

System board (security chip)

screen.

 

 

 

 

Five short beeps and a blank screen.

System board

 

 

 

No-beep symptoms

Table 4. No-beep symptoms

Symptom or error

FRU or action, in sequence

 

 

 

No beep, power-on indicator on, LCD blank,

1.

Make sure that every connector is

and no POST.

 

connected tightly and correctly.

 

2.

DIMM.

 

3.

System board.

 

 

 

No beep, power-on indicator on, and LCD

1.

Reseat DIMM.

blank during POST.

2.

System board.

 

 

 

The power-on password prompt appears.

A power-on password or a supervisor

 

password is set. Type the password and

 

press Enter.

 

 

The hard-disk password prompt appears.

A hard-disk password is set. Type the

 

password and press Enter.

 

 

 

44ThinkPad X301 Hardware Maintenance Manual

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Lenovo 27763DU, 27763PU, 27763CU manual Beep symptoms, No-beep symptoms
Page 51 Page 53

27763CU, 27763DU, 27763PU specifications

The Lenovo models 27763PU, 27763DU, and 27763CU are part of the highly regarded ThinkPad series, known for their robustness and performance in business environments. Each of these laptops embodies Lenovo's commitment to delivering high-quality devices that cater to various user needs, from professionals to students.

The Lenovo 27763PU features a 14-inch display with Full HD resolution, providing crisp visuals ideal for work and multimedia. This model is powered by an Intel Core i5 processor, ensuring smooth multitasking and efficient performance across demanding applications. With up to 16GB of RAM and a fast SSD for storage, users can expect quick boot times and rapid file access. The laptop's lightweight design makes it portable, suitable for on-the-go professionals.

In contrast, the 27763DU and 27763CU models offer enhanced features for users who require even more power and versatility. The 27763DU is equipped with similar impressive display specifications but boasts an upgraded Intel Core i7 processor and an optional discrete graphics card, making it perfect for tasks such as graphic design or video editing. This model supports higher RAM configurations, allowing heavy multitasking without compromising performance.

The Lenovo 27763CU builds on the strengths of its predecessors by incorporating advanced technologies that enhance user experience. This model includes Lenovo's unique Rapid Charge technology, which allows the battery to charge quickly, offering hours of usage from just a short charging session. The inclusion of a backlit keyboard ensures productivity in low-light environments, while the precision touchpad and optional touchscreen display provide intuitive navigation and interaction.

All three models prioritize security and durability, featuring a robust chassis resistant to wear and tear. They come equipped with fingerprint readers, ensuring secure access to data and applications. Additionally, the ThinkShield security platform offers comprehensive protection for sensitive information, making these devices suitable for corporate standards.

In summary, the Lenovo 27763PU, 27763DU, and 27763CU deliver impressive performance, cutting-edge features, and a focus on security, appealing to a diverse range of users. Whether for business, education, or personal use, these laptops stand out as excellent choices for those looking for reliability and efficiency.