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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 recommend 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 to http://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 may 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 BGA (Ball Grid Array) chipset.
How to use error codes
Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed,
begin the diagnosis with the rst error code. Whatever causes the rst 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.
Strategy for replacing FRUs for CTO, CMV, and GAV
Product denition
Dynamic Congure To Order (CTO)
This provides the ability for a customer to congure a Lenovo solution from an eSite, and have this
conguration sent to fulllment, where it is built and shipped directly to the customer. The machine label and
eSupport will load these products as the 4-digit MT and 3-digit model, where model = “CTO” (Example:
1829-CTO).
Custom Model Variant (CMV)
This is a unique conguration that has been negotiated between Lenovo and the customer. A unique 4-digit
MT and 3-digit model is provided to the customer to place orders (Example: 1829-W15). A CMV is a special
bid offering. Therefore, it is NOT generally announced.
• The MTM portion of the machine label is the 4-digit MT and 3-digit model, where model = “CTO”
(Example: 1829-CTO). The PRODUCT ID portion of the machine label is the 4-digit MT and 3-digit CMV
model (Example: 1829-W15).
• eSupport will show both the CTO and CMV machine type models (Example: 1829-CTO and 1829-W15
will be found on the eSupport site.)
26 Hardware Maintenance Manual