Lenovo X200 Bedienungsanleitung PDF herunterladen (Seite 48)

Use the following strategy to prevent unnecessary expense for replacing and

servicing FRUs:

v If you are instructed to replace a FRU but the replacement does not correct the

problem, reinstall the original FRU before you continue.

v Some computers have both a processor board and a system board. If you are

instructed to replace either the processor board or the system board, and

replacing one of them does not correct the problem, reinstall that board, and

then replace the other one.

v If an adapter or a device consists of more than one FRU, any of the FRUs may

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 may have

been customized. Running Automatic Configuration may 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 may

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.

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 may

cause a system malfunction.

Attention: When handling a system board:

v Do not drop a system board or apply any excessive force to it.

v Avoid rough handling of any kind.

v Avoid bending a system board and hard pushing to prevent cracking at each

BGA (Ball Grid Array) 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 may 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.

40 ThinkPad X200 Tablet and X201 Tablet Hardware Maintenance Manual

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Lenovo X200 Bedienungsanleitung Seite 48