Chapter 3. Important Service Information; Power Management; Symptom-To-Fru Index - Lenovo ThinkPad X131e Chromebook Hardware Maintenance Manual

Chapter 3. Important service information

This chapter presents the following important service:
• "Power management" on page 11
• "Symptom-to-FRU index" on page 11
• "Strategy for replacing FRUs for GAV" on page 13
• "Strategies for replacing FRUs" on page 13
Important:
• Advise customers to contact the Lenovo
Telephone numbers for Lenovo Support are available at:
http://www.lenovo.com/support/phone
• System disassembly and reassembly videos that show the FRU removal or replacement procedures for
the Lenovo authorized service technicians are available at:
http://www.lenovoservicetraining.com/ion/

Power management

To reduce power consumption, put the computer into sleep mode if you do not use it.
When the computer enters sleep mode, the following events occur:
• The LCD is powered off.
• The microprocessor stops.
To enter sleep mode, close the lid if you are logged in. To resume from sleep mode, open the computer
lid and press any key.
Note: If you are not logged in, closing the lid will shut down the computer.
In certain circumstances, the computer goes into sleep mode automatically:
• After a period of inactivity
• When the battery indicator blinks orange, indicating that the battery power is low
Note: The computer does not accept any input immediately after it enters sleep mode. Wait a few seconds
before taking any action to reenter operation mode.
Also, in either of the following events, the computer automatically returns from sleep mode and resumes
operation:

Symptom-to-FRU index

This section contains following information:
• "LCD-related symptoms" on page 12
• "Intermittent problems" on page 12
• "Undetermined problems" on page 12
The symptom-to-FRU index in this section lists some symptoms and their possible causes. The most likely
cause is listed first, in boldface type.
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