Lenovo ThinkPad S431 Hardware Maintenance Manual - Page 28

Strategy for replacing a hard disk drive, Important notice for replacing a system board - user manual

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• If an adapter or a device consists of more than one FRU, any of the FRUs might be the cause of the error. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms. Attention: The setup configuration on the computer you are servicing might have been customized. Running Automatic Configuration might alter the settings. Note the current configuration settings (using the View Configuration option); then, when service has been completed, verify that those settings remain in effect. Strategy for replacing a hard disk drive Always try to run a low-level format before replacing a hard disk drive. This will cause all customer data on the hard disk to be lost. Be sure that the customer has a current backup of the data before doing this task. Attention: The drive startup sequence in the computer you are servicing might have been changed. Be extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect drive, data or programs can be overwritten. If the computer is shipped with both an mSATA solid-state drive and a hard disk drive, the mSATA solid-state drive is used for the "cache" function and to support the Intel® Rapid Start Technology. We recommended that users do not replace the mSATA solid-state drive by themselves. Otherwise, the "cache" function will not work and the Intel Rapid Start Technology cannot be used any more. Attention: Ensure that you partition the mSATA solid-state drive after installing it on the computer you are servicing. Otherwise, the mSATA solid-state drive will not function correctly. For instructions on how to partition an mSATA solid-state drive, go tohttp://www.lenovo.com/support/msata-fru. Important notice for replacing a system board Some components mounted on a system board are very sensitive. Improper handling of a system board can cause damage to those components, and might cause a system malfunction. Attention: When handling a system board: • Do not drop a system board or apply any excessive force to it. • Avoid rough handling of any kind. • Avoid bending a system board and hard pushing to prevent cracking at each Ball Grid Array (BGA) chipset. How to use error message Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, begin the diagnosis with the first error code. Whatever causes the first error code might also cause false error codes. If no error code is displayed, see whether the error symptom is listed in the Symptom-to-FRU Index for the computer you are servicing. Strategy for replacing FRUs for CTO, CMV, and GAV Product definition Dynamic Configure To Order (CTO) model This model provides the ability for a customer to configure a Lenovo solution from a Web site, and have this configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label, iBase, and eSupport will load these products as the 4-character MT, 4-character model, and 2-character country code. The model is "CTO1" and the default country code is "WW" (example: 20AACTO1WW). 22 Hardware Maintenance Manual

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•
If an adapter or a device consists of more than one FRU, any of the FRUs might be the cause of the error.
Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change.
Replace only the FRU that changed the symptoms.
Attention:
The setup configuration on the computer you are servicing might have been customized. Running
Automatic Configuration might alter the settings. Note the current configuration settings (using the View
Configuration option); then, when service has been completed, verify that those settings remain in effect.
Strategy for replacing a hard disk drive
Always try to run a low-level format before replacing a hard disk drive. This will cause all customer data on
the hard disk to be lost. Be sure that the customer has a current backup of the data before doing this task.
Attention:
The drive startup sequence in the computer you are servicing might have been changed. Be
extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect
drive, data or programs can be overwritten.
If the computer is shipped with both an mSATA solid-state drive and a hard disk drive, the mSATA solid-state
drive is used for the “cache” function and to support the Intel
®
Rapid Start Technology. We recommended
that users do not replace the mSATA solid-state drive by themselves. Otherwise, the “cache” function will
not work and the Intel Rapid Start Technology cannot be used any more.
Attention:
Ensure that you partition the mSATA solid-state drive after installing it on the computer you are
servicing. Otherwise, the mSATA solid-state drive will not function correctly. For instructions on how to
partition an mSATA solid-state drive, go tohttp://www.lenovo.com/support/msata-fru.
Important notice for replacing a system board
Some components mounted on a system board are very sensitive. Improper handling of a system board can
cause damage to those components, and might cause a system malfunction.
Attention:
When handling a system board:
•
Do not drop a system board or apply any excessive force to it.
•
Avoid rough handling of any kind.
•
Avoid bending a system board and hard pushing to prevent cracking at each Ball Grid Array (BGA) chipset.
How to use error message
Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed,
begin the diagnosis with the first error code. Whatever causes the first error code might also cause false
error codes. If no error code is displayed, see whether the error symptom is listed in the Symptom-to-FRU
Index for the computer you are servicing.
Strategy for replacing FRUs for CTO, CMV, and GAV
Product definition
Dynamic Configure To Order (CTO) model
This model provides the ability for a customer to configure a Lenovo solution from a Web site, and have this
configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label,
iBase, and eSupport will load these products as the 4-character MT, 4-character model, and 2-character
country code. The model is “CTO1” and the default country code is “WW” (example: 20AACTO1WW).
22
Hardware Maintenance Manual