Lenovo 019624U Hardware Maintenance Manual

Contents

Strategy for replacing a hard disk driveAlways try to run a low-level format before replacing a hard disk drive. This will cause all customer data onthe 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. Beextremely careful during write operations such as copying, saving, or formatting. If you select an incorrectdrive, data or programs can be overwritten.Important notice for replacing a system boardSome components mounted on a system board are very sensitive. Improper handling of a system board cancause 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 messageUse 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 errorcodes. If no error code is displayed, see whether the error symptom is listed in the Symptom-to-FRUIndex for the computer you are servicing.Strategy for replacing FRUs for CTO, CMV, and GAVProduct definitionDynamic Configure To Order (CTO)This provides the ability for a customer to configure a Lenovo solution from an eSite, and have thisconfiguration sent to fulfillment, where it is built and shipped directly to the customer. The machine label,Product Entitlement Warehouse (PEW), eSupport, and the HMM will load these products as the 4-digit MTand 3-digit model, where model = “CTO” (Example: 1829-CTO).Custom Model Variant (CMV)This is a unique configuration that has been negotiated between Lenovo and the customer. A unique 4-digitMT and 3-digit model is provided to the customer to place orders (Example: 1829-W15). A CMV is a specialbid 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 CMVmodel (Example: 1829-W15).• The PEW record is the 4-digit MT and 3-digit model, where model = “CTO” (Example: 1829-CTO).• eSupport will show both the CTO and CMV machine type models (Example: 1829-CTO and 1829-W15will be found on the eSupport site.)• The HMM will have the 4-digit MT and 3-digit CTO model only (Example: 1829-CTO). Again, CMVs arecustom models and are not found in the HMM.General Announce Variant (GAV)This is a standard model (fixed configuration). GAVs are announced and offered to all customers. The MTMportion of the machine label is a 4-digit MT and 3-digit model, where model = a “fixed part number”, not20 Hardware Maintenance Manual