Table Of Contents - Lenovo N22–20 Hardware Maintenance Manual

Contents
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . .
Electrical safety . . . . . . . . . . . . . . .
Safety inspection guide . . . . . . . . . . . .
Handling devices that are sensitive to electrostatic
discharge. . . . . . . . . . . . . . . . . .
Grounding requirements . . . . . . . . . . . .
Safety notices (multilingual translations) . . . . . .
Chapter 2. General checkout . . . . . 19
What to do first . . . . . . . . . . . . . .
Checking the ac power adapter . . . . . . . .
Chapter 3. Idetifying FRUs (CRUs) . . 21
All FRUs (CRUs) for Lenovo N22-20
Chromebook . . . . . . . . . . . . . . .
Chapter 4. Removing a FRU or CRU . 25
General guidelines . . . . . . . . . . . . .
Remove the upper case (with keyboard). . . . .
Remove the battery pack . . . . . . . . . .
Remove the speakers . . . . . . . . . . . .
Remove the USB board . . . . . . . . . . .
© Copyright Lenovo 2016
Remove the WLAN & Bluetooth combo module. .
1 Remove the LCD module . . . . . . . . . .
1 Remove the system board and the DC-in cable . .
2 Disassemble the LCD module . . . . . . . . .
Remove the LCD bezel. . . . . . . . . .
3
Remove the LCD panel . . . . . . . . .
4
Remove the camera assembly or the LCD &
4 camera cable . . . . . . . . . . . . .
Assemble camera parts . . . . . . . . .
Remove the hinges . . . . . . . . . . .
19
Appendix A. Features, controls, and
20
connectors . . . . . . . . . . . . . . 41
Appendix B. Lenovo part numbers for
21
replacement FRUs . . . . . . . . . . 43
Appendix C. Lenovo part numbers for
25
CRUs and miscellaneous parts . . . . 45
25
Appendix D. Label locations . . . . . 49
27
Trademarks . . . . . . . . . . . . . . . . .
28
28
29
31
32
33
33
35
36
38
38
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