Contents
About this documentation . . . . . . . . v
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 1
Safety inspection guide . . . . . . . . . . . . . 2
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
Chapter 2. General checkout . . . . . 21
What to do first . . . . . . . . . . . . . . . 21
Checking the ac power adapter . . . . . . . . 22
CRU list . . . . . . . . . . . . . . . . . . 23
Chapter 3. Create and use a USB
repair shim . . . . . . . . . . . . . . . 25
What is a USB repair shim? . . . . . . . . . . 25
Create a repair shim . . . . . . . . . . . . . 25
Use a USB repair shim to diagnose and fix
problems . . . . . . . . . . . . . . . . . 25
Factory test items . . . . . . . . . . . . 26
Chapter 4. Identifying FRUs
(CRUs) . . . . . . . . . . . . . . . . . 29
Locating FRUs and CRUs . . . . . . . . . . . 29
Major FRUs and CRUs . . . . . . . . . . 30
LCD FRUs and CRUs . . . . . . . . . . . 32
Miscellaneous parts . . . . . . . . . . . 33
Looking up the FRU information . . . . . . . . 33
Chapter 5. Removing a FRU or
CRU . . . . . . . . . . . . . . . . . . 35
General guidelines. . . . . . . . . . . . . . 35
Cut off the power supply from the built-in battery
pack . . . . . . . . . . . . . . . . . . . 35
Remove the lower case . . . . . . . . . . . . 36
Remove the battery pack . . . . . . . . . . . 37
Remove the Wi-Fi card . . . . . . . . . . . . 38
Remove the I/O board . . . . . . . . . . . . 40
Remove the speakers . . . . . . . . . . . . 42
Remove the system board. . . . . . . . . . . 44
Remove the upper case (with keyboard) . . . . . 47
Remove the touchpad assembly . . . . . . . . 48
Disassemble the LCD module . . . . . . . . . 51
Remove the LCD panel . . . . . . . . . . 51
Remove the camera board. . . . . . . . . 54
Appendix A. Features and
connectors . . . . . . . . . . . . . . . 57
Appendix B. Label locations . . . . . 59
Trademarks . . . . . . . . . . . . . . . . . lxi
© Copyright Lenovo 2019 iii
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