Intermittent problems

vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

vSee the parts listing in the Hardware Maintenance Manual to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).

vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.

Symptom

Action

 

 

A problem occurs only

1. Make sure that:

occasionally and is difficult to

v All cables and cords are connected securely to the rear of the server and

diagnose.

attached devices.

 

 

v When the server is turned on, air is flowing from the fan grille. If there is no

 

airflow, the fan is not working. This can cause the server to overheat and

 

shut down.

 

2. Check the system-error logs (see “Using the Configuration/Setup Utility

 

program” on page 34).

 

 

USB keyboard, mouse, or pointing-device problems

vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

vSee the parts listing in the Hardware Maintenance Manual to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).

vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.

Symptom

Action

 

 

 

All or some keys on the

1.

See http://www.lenovo.com/accessories for keyboard compatibility.

keyboard do not work.

2.

Make sure that:

 

 

 

v The keyboard cable is securely connected.

 

 

v The server and the monitor are turned on.

 

3.

Move the keyboard cable to a different USB connector.

 

4.

Replace the following components one at a time, in the order shown, restarting

 

 

the server each time:

 

 

a. Keyboard

 

 

b. (Only if the problem occurred with a front USB connector) Internal cables to

 

 

the operation information panel

 

 

c. (Only if the problem occurred with a front USB connector) Operator

 

 

information panel

 

 

d. (Trained service technician only) System board

 

 

 

Chapter 5. Solving problems 47

Page 60 Page 62
Page 61
Image 61
Lenovo 6437, 6438, 6436, 6435 manual Intermittent problems, USB keyboard, mouse, or pointing-device problems
Page 60 Page 62

6435, 6436, 6437, 6438 specifications

Lenovo has continuously pushed the boundaries of technology with its innovative offerings in the laptop segment. Among its diverse portfolio, the Lenovo 6438, 6437, 6435, and 6436 models stand out due to their advanced features and robust performance, catering to both professional and everyday users.

The Lenovo 6438 is notable for its striking design and powerful specifications. It typically includes Intel's latest processors, ensuring smooth multitasking and enhanced performance. With an ample amount of RAM, users can seamlessly switch between applications. It often comes equipped with a high-resolution display, providing vibrant colors and sharp visuals, ideal for both work and entertainment.

Moving on to the Lenovo 6437, this model emphasizes portability without sacrificing functionality. Weighing less than its counterparts, it is a favorite among students and professionals on the go. The model features an impressive battery life, providing extended usage hours, making it perfect for long flights or extended meetings. The touchscreen capability adds an extra layer of interactivity, allowing for intuitive use.

The Lenovo 6435 distinguishes itself with its focus on security and connectivity. It often integrates biometric security features, such as a fingerprint reader, ensuring that user data remains safe. Furthermore, it typically includes multiple USB ports along with HDMI and Ethernet connections, catering to a range of peripheral devices. As for connectivity, it usually supports the latest Wi-Fi standards for faster and more reliable internet access.

Finally, the Lenovo 6436 is tailored for gamers and heavy multimedia users. It generally boasts a dedicated graphics card, delivering exceptional graphic performance for gaming and design work. The cooling system in this model is often engineered to ensure optimal performance during intense usage. Additionally, the sound quality is enhanced, with Dolby Audio technology providing an immersive audio experience.

In summary, the Lenovo 6438, 6437, 6435, and 6436 models exemplify the brand's commitment to innovation. With their unique features tailored for various user needs, these models present an excellent choice for anyone looking for performance, portability, security, or gaming capabilities. Whether for business, creativity, or leisure, Lenovo consistently provides quality and reliability in its laptop offerings.
Top Page Image Contents