User's Manual

Chapter 3. Help and support

What are CRUs

Customer Replaceable Units (CRUs) are parts that can be upgraded or replaced by the customer. Your

Chromebook contains self-service CRUs. They refer to parts that can be installed or replaced easily by

customer themselves or by trained service technicians at an additional cost.

If you intend on installing a 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

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. For full details, see the Lenovo Limited Warranty

documentation at

https://www.lenovo.com/warranty/llw_02.

Refer to the following CRU list for your Chromebook.

Self-service CRUs

• ac power adapter

• Power cord

Call Lenovo

If you have tried to correct the problem yourself and still need help, you can call Lenovo Customer Support

Center.

Before you contact Lenovo

Prepare the following before you contact Lenovo:

1. Record the problem symptoms and details:

• What is the problem? Is it continuous or intermittent?

• Any error message or error code?

• What operating system are you using? Which version?

• Which software applications were running at the time of the problem?

• Can the problem be reproduced? If so, how?

2. Record the system information:

• Product name

• Machine type and serial number

The following illustration shows where to find the machine type and serial number of your Chromebook.