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Lenovo N20 Chromebook Hardware Maintenance Manual - Lenovo N20 Chromebook - Page 27

Idetifying FRUs (CRUs), All FRUs (CRUs) for Lenovo N20 Chromebook

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Chapter 3. Idetifying FRUs (CRUs) All FRUs (CRUs) for Lenovo N20 Chromebook The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer's computer. Refer to "Lenovo part numbers of replacement FRUs or CRUs" on page 24 if you need to look up Lenovo part numbers for a particular FRU or CRU. © Copyright Lenovo 2014 21

Section	Page
Chapter 1. Safety information	7
General safety	7
Electrical safety	7
Safety inspection guide	8
Handling devices that are sensitive to electrostatic discharge	9
Grounding requirements	10
Safety notices (multilingual translations)	10
Chapter 2. General checkout	25
What to do first	25
Checking the ac power adapter	26
Chapter 3. Idetifying FRUs (CRUs)	27
All FRUs (CRUs) for Lenovo N20 Chromebook	27
Lenovo part numbers of replacement FRUs or CRUs	30
Chapter 4. Removing a FRU or CRU	35
General guidelines	35
Remove the keyboard	35
Remove the upper case	37
Remove the WLAN & Bluetooth combo module	39
Remove the LCD module	40
Remove the dc-in connector	41
Remove the battery pack	43
Remove the speakers	44
Remove the system board and the I/O board	45
Disassemble the LCD module	46
Remove the LCD bezel	46
Remove the LCD panel	47
Remove the hinges, the LCD cable, and the WLAN antennas	48
Remove the camera board and the camera cable	49
Appendix A. Features, controls, and connectors	51
Appendix B. Lenovo part numbers of screws used on N20 Chromebook	53
Appendix C. Lenovo part numbers of ac adapters and power cords	55
Appendix D. Label locations	57