Locating Frus And Crus - Lenovo ThinkPad T470s Hardware Maintenance Manual

Table 6. Status indicators (continued)
Indicator
6
Microphone-mute indicator
8
ac power-status indicator

Locating FRUs and CRUs

This topic introduces the following service parts:
• "Major FRUs" on page 47
• "LCD FRUs" on page 49
Notes:
• Each FRU is available for all types or models, unless otherwise specified.
• 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." Some CRUs are designated as self-service CRUs and others are
designated as optional-service CRUs. Installation of self-service CRUs is your responsibility. For optional-service
CRUs, you can either install the CRU yourself or you can request that a Service Provider install the CRU according
to the warranty service for your product. 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 http://www.lenovo.com/support. 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:
– 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.
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T470s Hardware Maintenance Manual
Meaning
On: The microphones are muted.
This indicator shows the ac power and battery power status of the computer.
• Green: connected to ac power (battery power 80%–100%)
• Yellow: connected to ac power (battery power 1%–80%)
• Off: not connected to ac power