Lenovo 6437, 6438, 6436 Intermittent problems, USB keyboard, mouse, or pointing-device problems

Page 61

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

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Contents Installation Guide Page Installation Guide Page Contents Page Safety Page To Connect To Disconnect Do not Safety Statement Safety Page Introduction Hardware and software requirements Features and specifications Drives Major components of the server Inch models Dimm System board 13 Operator information panel assembly System-board optional-device connectors Page Installation guidelines Installing optional devicesSystem reliability guidelines Working inside the server with the power onRemoving the cover Handling static-sensitive devicesInstalling a memory module Installing a hard disk drive Installing a simple-swap Serial ATA hard disk drive Installing a hot-swap hard disk drive Installing an adapter Expansion-slot cover Page Adapter bracket Installing an IBM Remote Supervisor Adapter II SlimLine Mounting bracket Completing the installation Connecting the cables Installing the coverRear Updating the server configurationFront view Server controls, LEDs, and powerRear view Turning on the server Server power featuresTurning off the server Page Configuring the server Using the ThinkServer EasyStartup program Using ThinkServer EasyManage products Using the LSI Logic Configuration Utility program Using the Configuration/Setup Utility programConfiguring the Gigabit Ethernet controllers Using the baseboard management controllerPage Diagnostic tools overview Solving problemsPost beep codes Documentation DVD Post error codesDefault Settings, and save Maintenance Manual on Abbreviated list of Post error codes Only Replace Abbreviated list of Post error codes Abbreviated list of Post error codes CD or DVD drive problems Troubleshooting tablesPage USB keyboard, mouse, or pointing-device problems Intermittent problemsPage Microprocessor problems Memory problemsMonitor problems Solving problems Optional-device problems Power problems EasyStartup problems Serial-device problemsSoftware problems Video problems Universal Serial Bus USB device problemsAppendix A. Getting help and technical assistance Using the documentationBefore you call Page Purchasing additional services Lenovo product service Using other servicesPage Appendix B. Notices Important notes TrademarksWaste electrical and electronic equipment Weee notices For the European Union Battery return programIndustry Canada Class a emission compliance statement German Ordinance for Work gloss statementEuropean Union EMC Directive conformance statement Avis de conformité à la réglementation dIndustrie CanadaGerman Class a compliance statement Appendix B. Notices Page SAS Sata IndexSAS Index Page Page Part Number 46U0855
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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.

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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.
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