Lenovo ThinkPad X390, Hardware Maintenance Manual, Page: 56 / 108

Notes:
• CRU statement for customers:
You can resolve some problems with your product with a replacement part you can install yourself, called a
“Customer Replaceable Unit” or “CRU.”
Installation of self-service CRUs is your responsibility. If you intend on
installing the CRU, Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped
with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your
product in this
Hardware Maintenance Manual . An electronic version of this manual can be found at
https://
support.lenovo.com
. Follow the on-screen instructions to find the manual for your product. You might be required to
return the defective part that is replaced by the CRU. When return is required: (1) return instructions, a prepaid
shipping label, and a container will be included with the replacement CRU; and (2) you might be charged for the
replacement CRU if Lenovo does not receive the defective CRU within thirty (30) days of your receipt of the
replacement CRU. See your Lenovo Limited Warranty documentation for full details.
ThinkPad computers contain the following types of CRUs and FRU:
–
Self-service CRUs: Refer to parts that can be installed or replaced easily by customer themselves or by trained
service technicians at an additional cost.
– Optional-service CRUs: Refer to parts that can be installed or replaced by customers with a greater skill level.
Trained service technicians can also provide service to install or replace the parts under the type of warranty
designated for the customer’s machine.
– FRUs: Refer to parts that must be installed or replaced only by trained service technicians. If customers choose
to replace the FRUs by themselves, the product warranty might be affected.
• Each FRU/CRU is available for all types or models, unless otherwise specified.
• FRUs marked with
OP
are available as options.
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X390 Yoga Hardware Maintenance Manual